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Author SHA1 Message Date
Greg Kroah-Hartman 6d14481318 Merge 4.9.60 into android-4.9 
Changes in 4.9.60
	workqueue: replace pool->manager_arb mutex with a flag
	ALSA: hda/realtek - Add support for ALC236/ALC3204
	ALSA: hda - fix headset mic problem for Dell machines with alc236
	ceph: unlock dangling spinlock in try_flush_caps()
	usb: xhci: Handle error condition in xhci_stop_device()
	KVM: PPC: Fix oops when checking KVM_CAP_PPC_HTM
	spi: uapi: spidev: add missing ioctl header
	spi: bcm-qspi: Fix use after free in bcm_qspi_probe() in error path
	fuse: fix READDIRPLUS skipping an entry
	xen/gntdev: avoid out of bounds access in case of partial gntdev_mmap()
	Input: elan_i2c - add ELAN0611 to the ACPI table
	Input: gtco - fix potential out-of-bound access
	assoc_array: Fix a buggy node-splitting case
	scsi: zfcp: fix erp_action use-before-initialize in REC action trace
	scsi: sg: Re-fix off by one in sg_fill_request_table()
	drm/amd/powerplay: fix uninitialized variable
	can: sun4i: fix loopback mode
	can: kvaser_usb: Correct return value in printout
	can: kvaser_usb: Ignore CMD_FLUSH_QUEUE_REPLY messages
	cfg80211: fix connect/disconnect edge cases
	ipsec: Fix aborted xfrm policy dump crash
	regulator: fan53555: fix I2C device ids
	ecryptfs: fix dereference of NULL user_key_payload
	Linux 4.9.60

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
 2017-11-02 10:30:09 +01:00
David Howells 67bcc5e530 assoc_array: Fix a buggy node-splitting case 
commit ea6789980fdaa610d7eb63602c746bf6ec70cd2b upstream.

This fixes CVE-2017-12193.

Fix a case in the assoc_array implementation in which a new leaf is
added that needs to go into a node that happens to be full, where the
existing leaves in that node cluster together at that level to the
exclusion of new leaf.

What needs to happen is that the existing leaves get moved out to a new
node, N1, at level + 1 and the existing node needs replacing with one,
N0, that has pointers to the new leaf and to N1.

The code that tries to do this gets this wrong in two ways:

 (1) The pointer that should've pointed from N0 to N1 is set to point
     recursively to N0 instead.

 (2) The backpointer from N0 needs to be set correctly in the case N0 is
     either the root node or reached through a shortcut.

Fix this by removing this path and using the split_node path instead,
which achieves the same end, but in a more general way (thanks to Eric
Biggers for spotting the redundancy).

The problem manifests itself as:

  BUG: unable to handle kernel NULL pointer dereference at 0000000000000010
  IP: assoc_array_apply_edit+0x59/0xe5

Fixes: 3cb989501c ("Add a generic associative array implementation.")
Reported-and-tested-by: WU Fan <u3536072@connect.hku.hk>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2017-11-02 09:49:14 +01:00
Greg Kroah-Hartman 16cc920a0f Merge 4.9.59 into android-4.9 
Changes in 4.9.59
	USB: devio: Revert "USB: devio: Don't corrupt user memory"
	USB: core: fix out-of-bounds access bug in usb_get_bos_descriptor()
	USB: serial: metro-usb: add MS7820 device id
	usb: cdc_acm: Add quirk for Elatec TWN3
	usb: quirks: add quirk for WORLDE MINI MIDI keyboard
	usb: hub: Allow reset retry for USB2 devices on connect bounce
	ALSA: usb-audio: Add native DSD support for Pro-Ject Pre Box S2 Digital
	can: gs_usb: fix busy loop if no more TX context is available
	parisc: Fix double-word compare and exchange in LWS code on 32-bit kernels
	iio: dummy: events: Add missing break
	usb: musb: sunxi: Explicitly release USB PHY on exit
	usb: musb: Check for host-mode using is_host_active() on reset interrupt
	xhci: Identify USB 3.1 capable hosts by their port protocol capability
	can: esd_usb2: Fix can_dlc value for received RTR, frames
	drm/nouveau/bsp/g92: disable by default
	drm/nouveau/mmu: flush tlbs before deleting page tables
	ALSA: seq: Enable 'use' locking in all configurations
	ALSA: hda: Remove superfluous '-' added by printk conversion
	ALSA: hda: Abort capability probe at invalid register read
	i2c: ismt: Separate I2C block read from SMBus block read
	i2c: piix4: Fix SMBus port selection for AMD Family 17h chips
	brcmfmac: Add check for short event packets
	brcmsmac: make some local variables 'static const' to reduce stack size
	bus: mbus: fix window size calculation for 4GB windows
	clockevents/drivers/cs5535: Improve resilience to spurious interrupts
	rtlwifi: rtl8821ae: Fix connection lost problem
	x86/microcode/intel: Disable late loading on model 79
	KEYS: encrypted: fix dereference of NULL user_key_payload
	lib/digsig: fix dereference of NULL user_key_payload
	KEYS: don't let add_key() update an uninstantiated key
	pkcs7: Prevent NULL pointer dereference, since sinfo is not always set.
	vmbus: fix missing signaling in hv_signal_on_read()
	xfs: don't unconditionally clear the reflink flag on zero-block files
	xfs: evict CoW fork extents when performing finsert/fcollapse
	fs/xfs: Use %pS printk format for direct addresses
	xfs: report zeroed or not correctly in xfs_zero_range()
	xfs: update i_size after unwritten conversion in dio completion
	xfs: perag initialization should only touch m_ag_max_usable for AG 0
	xfs: Capture state of the right inode in xfs_iflush_done
	xfs: always swap the cow forks when swapping extents
	xfs: handle racy AIO in xfs_reflink_end_cow
	xfs: Don't log uninitialised fields in inode structures
	xfs: move more RT specific code under CONFIG_XFS_RT
	xfs: don't change inode mode if ACL update fails
	xfs: reinit btree pointer on attr tree inactivation walk
	xfs: handle error if xfs_btree_get_bufs fails
	xfs: cancel dirty pages on invalidation
	xfs: trim writepage mapping to within eof
	fscrypt: fix dereference of NULL user_key_payload
	KEYS: Fix race between updating and finding a negative key
	FS-Cache: fix dereference of NULL user_key_payload
	Linux 4.9.59

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
 2017-10-30 09:27:09 +01:00
Eric Biggers f9e7e2d605 lib/digsig: fix dereference of NULL user_key_payload 
commit 192cabd6a296cbc57b3d8c05c4c89d87fc102506 upstream.

digsig_verify() requests a user key, then accesses its payload.
However, a revoked key has a NULL payload, and we failed to check for
this.  request_key() *does* skip revoked keys, but there is still a
window where the key can be revoked before we acquire its semaphore.

Fix it by checking for a NULL payload, treating it like a key which was
already revoked at the time it was requested.

Fixes: 051dbb918c ("crypto: digital signature verification support")
Reviewed-by: James Morris <james.l.morris@oracle.com>
Cc: Dmitry Kasatkin <dmitry.kasatkin@intel.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2017-10-27 10:38:08 +02:00
Hyojun Kim 63da4200cb f2fs: catch up to v4.14-rc1 
Cherry-picked from upstream-f2fs-stable-linux-4.9.y

Changes include:

commit 30da3a4de96733 ("f2fs: hurry up to issue discard after io interruption")
commit d1c363b48398d4 ("f2fs: fix to show correct discard_granularity in sysfs")
...

commit e6b120d4d01ab0 ("f2fs/fscrypt: catch up to v4.12")
commit 4d7931d72758db ("KEYS: Differentiate uses of rcu_dereference_key() and user_key_payload()")

Signed-off-by: Hyojun Kim <hyojun@google.com>
 2017-10-13 11:27:08 +00:00
Greg Kroah-Hartman cdbe07ad26 Merge 4.9.55 into android-4.9 
Changes in 4.9.55
	USB: gadgetfs: Fix crash caused by inadequate synchronization
	USB: gadgetfs: fix copy_to_user while holding spinlock
	usb: gadget: udc: atmel: set vbus irqflags explicitly
	usb: gadget: udc: renesas_usb3: fix for no-data control transfer
	usb: gadget: udc: renesas_usb3: fix Pn_RAMMAP.Pn_MPKT value
	usb: gadget: udc: renesas_usb3: Fix return value of usb3_write_pipe()
	usb-storage: unusual_devs entry to fix write-access regression for Seagate external drives
	usb-storage: fix bogus hardware error messages for ATA pass-thru devices
	usb: renesas_usbhs: fix the BCLR setting condition for non-DCP pipe
	usb: renesas_usbhs: fix usbhsf_fifo_clear() for RX direction
	ALSA: usb-audio: Check out-of-bounds access by corrupted buffer descriptor
	usb: pci-quirks.c: Corrected timeout values used in handshake
	USB: cdc-wdm: ignore -EPIPE from GetEncapsulatedResponse
	USB: dummy-hcd: fix connection failures (wrong speed)
	USB: dummy-hcd: fix infinite-loop resubmission bug
	USB: dummy-hcd: Fix erroneous synchronization change
	USB: devio: Don't corrupt user memory
	usb: gadget: mass_storage: set msg_registered after msg registered
	USB: g_mass_storage: Fix deadlock when driver is unbound
	USB: uas: fix bug in handling of alternate settings
	USB: core: harden cdc_parse_cdc_header
	usb: Increase quirk delay for USB devices
	USB: fix out-of-bounds in usb_set_configuration
	xhci: fix finding correct bus_state structure for USB 3.1 hosts
	xhci: Fix sleeping with spin_lock_irq() held in ASmedia 1042A workaround
	xhci: set missing SuperSpeedPlus Link Protocol bit in roothub descriptor
	Revert "xhci: Limit USB2 port wake support for AMD Promontory hosts"
	iio: adc: twl4030: Fix an error handling path in 'twl4030_madc_probe()'
	iio: adc: twl4030: Disable the vusb3v1 rugulator in the error handling path of 'twl4030_madc_probe()'
	iio: ad_sigma_delta: Implement a dedicated reset function
	staging: iio: ad7192: Fix - use the dedicated reset function avoiding dma from stack.
	iio: core: Return error for failed read_reg
	IIO: BME280: Updates to Humidity readings need ctrl_reg write!
	iio: ad7793: Fix the serial interface reset
	iio: adc: mcp320x: Fix readout of negative voltages
	iio: adc: mcp320x: Fix oops on module unload
	uwb: properly check kthread_run return value
	uwb: ensure that endpoint is interrupt
	staging: vchiq_2835_arm: Fix NULL ptr dereference in free_pagelist
	mm, oom_reaper: skip mm structs with mmu notifiers
	lib/ratelimit.c: use deferred printk() version
	lsm: fix smack_inode_removexattr and xattr_getsecurity memleak
	ALSA: compress: Remove unused variable
	Revert "ALSA: echoaudio: purge contradictions between dimension matrix members and total number of members"
	ALSA: usx2y: Suppress kernel warning at page allocation failures
	mlxsw: spectrum: Prevent mirred-related crash on removal
	net: sched: fix use-after-free in tcf_action_destroy and tcf_del_walker
	sctp: potential read out of bounds in sctp_ulpevent_type_enabled()
	tcp: update skb->skb_mstamp more carefully
	bpf/verifier: reject BPF_ALU64|BPF_END
	tcp: fix data delivery rate
	udpv6: Fix the checksum computation when HW checksum does not apply
	ip6_gre: skb_push ipv6hdr before packing the header in ip6gre_header
	net: phy: Fix mask value write on gmii2rgmii converter speed register
	ip6_tunnel: do not allow loading ip6_tunnel if ipv6 is disabled in cmdline
	net/sched: cls_matchall: fix crash when used with classful qdisc
	tcp: fastopen: fix on syn-data transmit failure
	net: emac: Fix napi poll list corruption
	packet: hold bind lock when rebinding to fanout hook
	bpf: one perf event close won't free bpf program attached by another perf event
	isdn/i4l: fetch the ppp_write buffer in one shot
	net_sched: always reset qdisc backlog in qdisc_reset()
	net: qcom/emac: specify the correct size when mapping a DMA buffer
	vti: fix use after free in vti_tunnel_xmit/vti6_tnl_xmit
	l2tp: Avoid schedule while atomic in exit_net
	l2tp: fix race condition in l2tp_tunnel_delete
	tun: bail out from tun_get_user() if the skb is empty
	net: dsa: Fix network device registration order
	packet: in packet_do_bind, test fanout with bind_lock held
	packet: only test po->has_vnet_hdr once in packet_snd
	net: Set sk_prot_creator when cloning sockets to the right proto
	netlink: do not proceed if dump's start() errs
	ip6_gre: ip6gre_tap device should keep dst
	ip6_tunnel: update mtu properly for ARPHRD_ETHER tunnel device in tx path
	tipc: use only positive error codes in messages
	net: rtnetlink: fix info leak in RTM_GETSTATS call
	socket, bpf: fix possible use after free
	powerpc/64s: Use emergency stack for kernel TM Bad Thing program checks
	powerpc/tm: Fix illegal TM state in signal handler
	percpu: make this_cpu_generic_read() atomic w.r.t. interrupts
	driver core: platform: Don't read past the end of "driver_override" buffer
	Drivers: hv: fcopy: restore correct transfer length
	stm class: Fix a use-after-free
	ftrace: Fix kmemleak in unregister_ftrace_graph
	HID: i2c-hid: allocate hid buffers for real worst case
	HID: wacom: leds: Don't try to control the EKR's read-only LEDs
	HID: wacom: Always increment hdev refcount within wacom_get_hdev_data
	HID: wacom: bits shifted too much for 9th and 10th buttons
	rocker: fix rocker_tlv_put_* functions for KASAN
	netlink: fix nla_put_{u8,u16,u32} for KASAN
	iwlwifi: mvm: use IWL_HCMD_NOCOPY for MCAST_FILTER_CMD
	iwlwifi: add workaround to disable wide channels in 5GHz
	scsi: sd: Do not override max_sectors_kb sysfs setting
	brcmfmac: add length check in brcmf_cfg80211_escan_handler()
	brcmfmac: setup passive scan if requested by user-space
	drm/i915/bios: ignore HDMI on port A
	nvme-pci: Use PCI bus address for data/queues in CMB
	mmc: core: add driver strength selection when selecting hs400es
	sched/cpuset/pm: Fix cpuset vs. suspend-resume bugs
	vfs: deny copy_file_range() for non regular files
	ext4: fix data corruption for mmap writes
	ext4: Don't clear SGID when inheriting ACLs
	ext4: don't allow encrypted operations without keys
	f2fs: don't allow encrypted operations without keys
	KVM: x86: fix singlestepping over syscall
	Linux 4.9.55

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
 2017-10-12 22:31:24 +02:00
Sergey Senozhatsky 1c0891295a lib/ratelimit.c: use deferred printk() version 
commit 656d61ce9666209c4c4a13c71902d3ee70d1ff6f upstream.

printk_ratelimit() invokes ___ratelimit() which may invoke a normal
printk() (pr_warn() in this particular case) to warn about suppressed
output.  Given that printk_ratelimit() may be called from anywhere, that
pr_warn() is dangerous - it may end up deadlocking the system.  Fix
___ratelimit() by using deferred printk().

Sasha reported the following lockdep error:

 : Unregister pv shared memory for cpu 8
 : select_fallback_rq: 3 callbacks suppressed
 : process 8583 (trinity-c78) no longer affine to cpu8
 :
 : ======================================================
 : WARNING: possible circular locking dependency detected
 : 4.14.0-rc2-next-20170927+ #252 Not tainted
 : ------------------------------------------------------
 : migration/8/62 is trying to acquire lock:
 : (&port_lock_key){-.-.}, at: serial8250_console_write()
 :
 : but task is already holding lock:
 : (&rq->lock){-.-.}, at: sched_cpu_dying()
 :
 : which lock already depends on the new lock.
 :
 :
 : the existing dependency chain (in reverse order) is:
 :
 : -> #3 (&rq->lock){-.-.}:
 : __lock_acquire()
 : lock_acquire()
 : _raw_spin_lock()
 : task_fork_fair()
 : sched_fork()
 : copy_process.part.31()
 : _do_fork()
 : kernel_thread()
 : rest_init()
 : start_kernel()
 : x86_64_start_reservations()
 : x86_64_start_kernel()
 : verify_cpu()
 :
 : -> #2 (&p->pi_lock){-.-.}:
 : __lock_acquire()
 : lock_acquire()
 : _raw_spin_lock_irqsave()
 : try_to_wake_up()
 : default_wake_function()
 : woken_wake_function()
 : __wake_up_common()
 : __wake_up_common_lock()
 : __wake_up()
 : tty_wakeup()
 : tty_port_default_wakeup()
 : tty_port_tty_wakeup()
 : uart_write_wakeup()
 : serial8250_tx_chars()
 : serial8250_handle_irq.part.25()
 : serial8250_default_handle_irq()
 : serial8250_interrupt()
 : __handle_irq_event_percpu()
 : handle_irq_event_percpu()
 : handle_irq_event()
 : handle_level_irq()
 : handle_irq()
 : do_IRQ()
 : ret_from_intr()
 : native_safe_halt()
 : default_idle()
 : arch_cpu_idle()
 : default_idle_call()
 : do_idle()
 : cpu_startup_entry()
 : rest_init()
 : start_kernel()
 : x86_64_start_reservations()
 : x86_64_start_kernel()
 : verify_cpu()
 :
 : -> #1 (&tty->write_wait){-.-.}:
 : __lock_acquire()
 : lock_acquire()
 : _raw_spin_lock_irqsave()
 : __wake_up_common_lock()
 : __wake_up()
 : tty_wakeup()
 : tty_port_default_wakeup()
 : tty_port_tty_wakeup()
 : uart_write_wakeup()
 : serial8250_tx_chars()
 : serial8250_handle_irq.part.25()
 : serial8250_default_handle_irq()
 : serial8250_interrupt()
 : __handle_irq_event_percpu()
 : handle_irq_event_percpu()
 : handle_irq_event()
 : handle_level_irq()
 : handle_irq()
 : do_IRQ()
 : ret_from_intr()
 : native_safe_halt()
 : default_idle()
 : arch_cpu_idle()
 : default_idle_call()
 : do_idle()
 : cpu_startup_entry()
 : rest_init()
 : start_kernel()
 : x86_64_start_reservations()
 : x86_64_start_kernel()
 : verify_cpu()
 :
 : -> #0 (&port_lock_key){-.-.}:
 : check_prev_add()
 : __lock_acquire()
 : lock_acquire()
 : _raw_spin_lock_irqsave()
 : serial8250_console_write()
 : univ8250_console_write()
 : console_unlock()
 : vprintk_emit()
 : vprintk_default()
 : vprintk_func()
 : printk()
 : ___ratelimit()
 : __printk_ratelimit()
 : select_fallback_rq()
 : sched_cpu_dying()
 : cpuhp_invoke_callback()
 : take_cpu_down()
 : multi_cpu_stop()
 : cpu_stopper_thread()
 : smpboot_thread_fn()
 : kthread()
 : ret_from_fork()
 :
 : other info that might help us debug this:
 :
 : Chain exists of:
 :   &port_lock_key --> &p->pi_lock --> &rq->lock
 :
 :  Possible unsafe locking scenario:
 :
 :        CPU0                    CPU1
 :        ----                    ----
 :   lock(&rq->lock);
 :                                lock(&p->pi_lock);
 :                                lock(&rq->lock);
 :   lock(&port_lock_key);
 :
 :  *** DEADLOCK ***
 :
 : 4 locks held by migration/8/62:
 : #0: (&p->pi_lock){-.-.}, at: sched_cpu_dying()
 : #1: (&rq->lock){-.-.}, at: sched_cpu_dying()
 : #2: (printk_ratelimit_state.lock){....}, at: ___ratelimit()
 : #3: (console_lock){+.+.}, at: vprintk_emit()
 :
 : stack backtrace:
 : CPU: 8 PID: 62 Comm: migration/8 Not tainted 4.14.0-rc2-next-20170927+ #252
 : Call Trace:
 : dump_stack()
 : print_circular_bug()
 : check_prev_add()
 : ? add_lock_to_list.isra.26()
 : ? check_usage()
 : ? kvm_clock_read()
 : ? kvm_sched_clock_read()
 : ? sched_clock()
 : ? check_preemption_disabled()
 : __lock_acquire()
 : ? __lock_acquire()
 : ? add_lock_to_list.isra.26()
 : ? debug_check_no_locks_freed()
 : ? memcpy()
 : lock_acquire()
 : ? serial8250_console_write()
 : _raw_spin_lock_irqsave()
 : ? serial8250_console_write()
 : serial8250_console_write()
 : ? serial8250_start_tx()
 : ? lock_acquire()
 : ? memcpy()
 : univ8250_console_write()
 : console_unlock()
 : ? __down_trylock_console_sem()
 : vprintk_emit()
 : vprintk_default()
 : vprintk_func()
 : printk()
 : ? show_regs_print_info()
 : ? lock_acquire()
 : ___ratelimit()
 : __printk_ratelimit()
 : select_fallback_rq()
 : sched_cpu_dying()
 : ? sched_cpu_starting()
 : ? rcutree_dying_cpu()
 : ? sched_cpu_starting()
 : cpuhp_invoke_callback()
 : ? cpu_disable_common()
 : take_cpu_down()
 : ? trace_hardirqs_off_caller()
 : ? cpuhp_invoke_callback()
 : multi_cpu_stop()
 : ? __this_cpu_preempt_check()
 : ? cpu_stop_queue_work()
 : cpu_stopper_thread()
 : ? cpu_stop_create()
 : smpboot_thread_fn()
 : ? sort_range()
 : ? schedule()
 : ? __kthread_parkme()
 : kthread()
 : ? sort_range()
 : ? kthread_create_on_node()
 : ret_from_fork()
 : process 9121 (trinity-c78) no longer affine to cpu8
 : smpboot: CPU 8 is now offline

Link: http://lkml.kernel.org/r/20170928120405.18273-1-sergey.senozhatsky@gmail.com
Fixes: 6b1d174b0c ("ratelimit: extend to print suppressed messages on release")
Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Reported-by: Sasha Levin <levinsasha928@gmail.com>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Borislav Petkov <bp@suse.de>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2017-10-12 11:51:19 +02:00
Greg Kroah-Hartman 85e1c0178a Merge 4.9.48 into android-4.9 
Changes in 4.9.48
	irqchip: mips-gic: SYNC after enabling GIC region
	i2c: ismt: Don't duplicate the receive length for block reads
	i2c: ismt: Return EMSGSIZE for block reads with bogus length
	crypto: algif_skcipher - only call put_page on referenced and used pages
	mm, uprobes: fix multiple free of ->uprobes_state.xol_area
	mm, madvise: ensure poisoned pages are removed from per-cpu lists
	ceph: fix readpage from fscache
	cpumask: fix spurious cpumask_of_node() on non-NUMA multi-node configs
	cpuset: Fix incorrect memory_pressure control file mapping
	alpha: uapi: Add support for __SANE_USERSPACE_TYPES__
	CIFS: Fix maximum SMB2 header size
	CIFS: remove endian related sparse warning
	wl1251: add a missing spin_lock_init()
	lib/mpi: kunmap after finishing accessing buffer
	xfrm: policy: check policy direction value
	drm/ttm: Fix accounting error when fail to get pages for pool
	kvm: arm/arm64: Force reading uncached stage2 PGD
	epoll: fix race between ep_poll_callback(POLLFREE) and ep_free()/ep_remove()
	Linux 4.9.48

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
 2017-09-07 10:32:23 +02:00
Stephan Mueller 31decdcd83 lib/mpi: kunmap after finishing accessing buffer 
commit dea3eb8b452e36cf2dd572b0a797915ccf452ae6 upstream.

Using sg_miter_start and sg_miter_next, the buffer of an SG is kmap'ed
to *buff. The current code calls sg_miter_stop (and thus kunmap) on the
SG entry before the last access of *buff.

The patch moves the sg_miter_stop call after the last access to *buff to
ensure that the memory pointed to by *buff is still mapped.

Fixes: 4816c94064 ("lib/mpi: Fix SG miter leak")
Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2017-09-07 08:35:40 +02:00
Greg Kroah-Hartman 6cd2127851 Merge 4.9.47 into android-4.9 
Changes in 4.9.47
	p54: memset(0) whole array
	scsi: isci: avoid array subscript warning
	staging: wilc1000: simplify vif[i]->ndev accesses
	gcov: support GCC 7.1
	kvm: arm/arm64: Fix race in resetting stage2 PGD
	arm64: mm: abort uaccess retries upon fatal signal
	x86/io: Add "memory" clobber to insb/insw/insl/outsb/outsw/outsl
	arm64: fpsimd: Prevent registers leaking across exec
	locking/spinlock/debug: Remove spinlock lockup detection code
	scsi: sg: protect accesses to 'reserved' page array
	scsi: sg: reset 'res_in_use' after unlinking reserved array
	lz4: fix bogus gcc warning
	Linux 4.9.47

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
 2017-09-04 13:25:05 +02:00
Greg Kroah-Hartman 529ada21ff lz4: fix bogus gcc warning 
When building lz4 under gcc-7 we get the following bogus warning:

  CC [M]  lib/lz4/lz4hc_compress.o
lib/lz4/lz4hc_compress.c: In function ‘lz4hc_compress’:
lib/lz4/lz4hc_compress.c:179:42: warning: ‘delta’ may be used uninitialized in this function [-Wmaybe-uninitialized]
    chaintable[(size_t)(ptr) & MAXD_MASK] = delta;
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~
lib/lz4/lz4hc_compress.c:134:6: note: ‘delta’ was declared here
  u16 delta;
      ^~~~~

This doesn't show up in the 4.4-stable tree due to us turning off
warnings like this.  It also doesn't show up in newer kernel versions as
this code was totally rewritten.

So for now, to get the 4.9-stable tree to build with 0 warnings on x86
allmodconfig, let's just shut the compiler up by initializing the
variable to 0, despite it not really doing anything.

To be far, this code is crazy complex, so the fact that gcc can't
determine if the variable is really used or not isn't that bad, I'd
blame the code here instead of the compiler.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2017-09-02 07:07:54 +02:00
Greg Kroah-Hartman 02f29ab1b9 Merge 4.9.42 into android-4.9 
Changes in 4.9.42
	parisc: Handle vma's whose context is not current in flush_cache_range
	cgroup: create dfl_root files on subsys registration
	cgroup: fix error return value from cgroup_subtree_control()
	libata: array underflow in ata_find_dev()
	workqueue: restore WQ_UNBOUND/max_active==1 to be ordered
	iwlwifi: dvm: prevent an out of bounds access
	brcmfmac: fix memleak due to calling brcmf_sdiod_sgtable_alloc() twice
	NFSv4: Fix EXCHANGE_ID corrupt verifier issue
	mmc: sdhci-of-at91: force card detect value for non removable devices
	device property: Make dev_fwnode() public
	mmc: core: Fix access to HS400-ES devices
	mm, mprotect: flush TLB if potentially racing with a parallel reclaim leaving stale TLB entries
	cpuset: fix a deadlock due to incomplete patching of cpusets_enabled()
	ALSA: hda - Fix speaker output from VAIO VPCL14M1R
	drm/amdgpu: Fix undue fallthroughs in golden registers initialization
	ASoC: do not close shared backend dailink
	KVM: async_pf: make rcu irq exit if not triggered from idle task
	mm/page_alloc: Remove kernel address exposure in free_reserved_area()
	timers: Fix overflow in get_next_timer_interrupt
	powerpc/tm: Fix saving of TM SPRs in core dump
	powerpc/64: Fix __check_irq_replay missing decrementer interrupt
	iommu/amd: Enable ga_log_intr when enabling guest_mode
	gpiolib: skip unwanted events, don't convert them to opposite edge
	ext4: fix SEEK_HOLE/SEEK_DATA for blocksize < pagesize
	ext4: fix overflow caused by missing cast in ext4_resize_fs()
	ARM: dts: armada-38x: Fix irq type for pca955
	ARM: dts: tango4: Request RGMII RX and TX clock delays
	media: platform: davinci: return -EINVAL for VPFE_CMD_S_CCDC_RAW_PARAMS ioctl
	iscsi-target: Fix initial login PDU asynchronous socket close OOPs
	mmc: dw_mmc: Use device_property_read instead of of_property_read
	mmc: core: Use device_property_read instead of of_property_read
	media: lirc: LIRC_GET_REC_RESOLUTION should return microseconds
	f2fs: sanity check checkpoint segno and blkoff
	Btrfs: fix early ENOSPC due to delalloc
	saa7164: fix double fetch PCIe access condition
	tcp_bbr: cut pacing rate only if filled pipe
	tcp_bbr: introduce bbr_bw_to_pacing_rate() helper
	tcp_bbr: introduce bbr_init_pacing_rate_from_rtt() helper
	tcp_bbr: remove sk_pacing_rate=0 transient during init
	tcp_bbr: init pacing rate on first RTT sample
	ipv4: ipv6: initialize treq->txhash in cookie_v[46]_check()
	net: Zero terminate ifr_name in dev_ifname().
	ipv6: avoid overflow of offset in ip6_find_1stfragopt
	net: dsa: b53: Add missing ARL entries for BCM53125
	ipv4: initialize fib_trie prior to register_netdev_notifier call.
	rtnetlink: allocate more memory for dev_set_mac_address()
	mcs7780: Fix initialization when CONFIG_VMAP_STACK is enabled
	openvswitch: fix potential out of bound access in parse_ct
	packet: fix use-after-free in prb_retire_rx_blk_timer_expired()
	ipv6: Don't increase IPSTATS_MIB_FRAGFAILS twice in ip6_fragment()
	net: ethernet: nb8800: Handle all 4 RGMII modes identically
	dccp: fix a memleak that dccp_ipv6 doesn't put reqsk properly
	dccp: fix a memleak that dccp_ipv4 doesn't put reqsk properly
	dccp: fix a memleak for dccp_feat_init err process
	sctp: don't dereference ptr before leaving _sctp_walk_{params, errors}()
	sctp: fix the check for _sctp_walk_params and _sctp_walk_errors
	net/mlx5: Consider tx_enabled in all modes on remap
	net/mlx5: Fix command bad flow on command entry allocation failure
	net/mlx5e: Fix outer_header_zero() check size
	net/mlx5e: Fix wrong delay calculation for overflow check scheduling
	net/mlx5e: Schedule overflow check work to mlx5e workqueue
	net: phy: Correctly process PHY_HALTED in phy_stop_machine()
	xen-netback: correctly schedule rate-limited queues
	sparc64: Measure receiver forward progress to avoid send mondo timeout
	sparc64: Fix exception handling in UltraSPARC-III memcpy.
	wext: handle NULL extra data in iwe_stream_add_point better
	sh_eth: fix EESIPR values for SH77{34|63}
	sh_eth: R8A7740 supports packet shecksumming
	net: phy: dp83867: fix irq generation
	tg3: Fix race condition in tg3_get_stats64().
	x86/boot: Add missing declaration of string functions
	spi: spi-axi: Free resources on error path
	ASoC: rt5645: set sel_i2s_pre_div1 to 2
	netfilter: use fwmark_reflect in nf_send_reset
	phy state machine: failsafe leave invalid RUNNING state
	ipv4: make tcp_notsent_lowat sysctl knob behave as true unsigned int
	clk/samsung: exynos542x: mark some clocks as critical
	scsi: qla2xxx: Get mutex lock before checking optrom_state
	drm/virtio: fix framebuffer sparse warning
	ARM: dts: sun8i: Support DTB build for NanoPi M1
	ARM: dts: sunxi: Change node name for pwrseq pin on Olinuxino-lime2-emmc
	iw_cxgb4: do not send RX_DATA_ACK CPLs after close/abort
	nbd: blk_mq_init_queue returns an error code on failure, not NULL
	virtio_blk: fix panic in initialization error path
	ARM: 8632/1: ftrace: fix syscall name matching
	mm, slab: make sure that KMALLOC_MAX_SIZE will fit into MAX_ORDER
	lib/Kconfig.debug: fix frv build failure
	signal: protect SIGNAL_UNKILLABLE from unintentional clearing.
	mm: don't dereference struct page fields of invalid pages
	net/mlx5: E-Switch, Re-enable RoCE on mode change only after FDB destroy
	ipv4: Should use consistent conditional judgement for ip fragment in __ip_append_data and ip_finish_output
	net: account for current skb length when deciding about UFO
	net: phy: Fix PHY unbind crash
	workqueue: implicit ordered attribute should be overridable
	Linux 4.9.42

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
 2017-08-11 13:55:02 -07:00
Sudip Mukherjee d12824c897 lib/Kconfig.debug: fix frv build failure 
[ Upstream commit da0510c47519fe0999cffe316e1d370e29f952be ]

The build of frv allmodconfig was failing with the errors like:

  /tmp/cc0JSPc3.s: Assembler messages:
  /tmp/cc0JSPc3.s:1839: Error: symbol `.LSLT0' is already defined
  /tmp/cc0JSPc3.s:1842: Error: symbol `.LASLTP0' is already defined
  /tmp/cc0JSPc3.s:1969: Error: symbol `.LELTP0' is already defined
  /tmp/cc0JSPc3.s:1970: Error: symbol `.LELT0' is already defined

Commit 866ced950b ("kbuild: Support split debug info v4") introduced
splitting the debug info and keeping that in a separate file.  Somehow,
the frv-linux gcc did not like that and I am guessing that instead of
splitting it started copying.  The first report about this is at:

  https://lists.01.org/pipermail/kbuild-all/2015-July/010527.html.

I will try and see if this can work with frv and if still fails I will
open a bug report with gcc.  But meanwhile this is the easiest option to
solve build failure of frv.

Fixes: 866ced950b ("kbuild: Support split debug info v4")
Link: http://lkml.kernel.org/r/1482062348-5352-1-git-send-email-sudipm.mukherjee@gmail.com
Signed-off-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk>
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2017-08-11 08:49:36 -07:00
Greg Kroah-Hartman 14accea70e Merge 4.9.39 into android-4.9 
Changes in 4.9.39
	xen-netfront: Rework the fix for Rx stall during OOM and network stress
	net_sched: fix error recovery at qdisc creation
	net: sched: Fix one possible panic when no destroy callback
	net/phy: micrel: configure intterupts after autoneg workaround
	ipv6: avoid unregistering inet6_dev for loopback
	net: dp83640: Avoid NULL pointer dereference.
	tcp: reset sk_rx_dst in tcp_disconnect()
	net: prevent sign extension in dev_get_stats()
	bridge: mdb: fix leak on complete_info ptr on fail path
	rocker: move dereference before free
	bpf: prevent leaking pointer via xadd on unpriviledged
	net: handle NAPI_GRO_FREE_STOLEN_HEAD case also in napi_frags_finish()
	net/mlx5: Cancel delayed recovery work when unloading the driver
	liquidio: fix bug in soft reset failure detection
	net/mlx5e: Fix TX carrier errors report in get stats ndo
	ipv6: dad: don't remove dynamic addresses if link is down
	vxlan: fix hlist corruption
	net: core: Fix slab-out-of-bounds in netdev_stats_to_stats64
	net: ipv6: Compare lwstate in detecting duplicate nexthops
	vrf: fix bug_on triggered by rx when destroying a vrf
	rds: tcp: use sock_create_lite() to create the accept socket
	brcmfmac: fix possible buffer overflow in brcmf_cfg80211_mgmt_tx()
	brcmfmac: Fix a memory leak in error handling path in 'brcmf_cfg80211_attach'
	brcmfmac: Fix glom_skb leak in brcmf_sdiod_recv_chain
	sfc: don't read beyond unicast address list
	cfg80211: Define nla_policy for NL80211_ATTR_LOCAL_MESH_POWER_MODE
	cfg80211: Validate frequencies nested in NL80211_ATTR_SCAN_FREQUENCIES
	cfg80211: Check if PMKID attribute is of expected size
	cfg80211: Check if NAN service ID is of expected size
	irqchip/gic-v3: Fix out-of-bound access in gic_set_affinity
	parisc: Report SIGSEGV instead of SIGBUS when running out of stack
	parisc: use compat_sys_keyctl()
	parisc: DMA API: return error instead of BUG_ON for dma ops on non dma devs
	parisc/mm: Ensure IRQs are off in switch_mm()
	tools/lib/lockdep: Reduce MAX_LOCK_DEPTH to avoid overflowing lock_chain/: Depth
	thp, mm: fix crash due race in MADV_FREE handling
	kernel/extable.c: mark core_kernel_text notrace
	mm/list_lru.c: fix list_lru_count_node() to be race free
	fs/dcache.c: fix spin lockup issue on nlru->lock
	checkpatch: silence perl 5.26.0 unescaped left brace warnings
	binfmt_elf: use ELF_ET_DYN_BASE only for PIE
	arm: move ELF_ET_DYN_BASE to 4MB
	arm64: move ELF_ET_DYN_BASE to 4GB / 4MB
	powerpc: move ELF_ET_DYN_BASE to 4GB / 4MB
	s390: reduce ELF_ET_DYN_BASE
	exec: Limit arg stack to at most 75% of _STK_LIM
	ARM64: dts: marvell: armada37xx: Fix timer interrupt specifiers
	vt: fix unchecked __put_user() in tioclinux ioctls
	rcu: Add memory barriers for NOCB leader wakeup
	nvmem: core: fix leaks on registration errors
	mnt: In umount propagation reparent in a separate pass
	mnt: In propgate_umount handle visiting mounts in any order
	mnt: Make propagate_umount less slow for overlapping mount propagation trees
	selftests/capabilities: Fix the test_execve test
	mm: fix overflow check in expand_upwards()
	crypto: talitos - Extend max key length for SHA384/512-HMAC and AEAD
	crypto: atmel - only treat EBUSY as transient if backlog
	crypto: sha1-ssse3 - Disable avx2
	crypto: caam - properly set IV after {en,de}crypt
	crypto: caam - fix signals handling
	Revert "sched/core: Optimize SCHED_SMT"
	sched/fair, cpumask: Export for_each_cpu_wrap()
	sched/topology: Fix building of overlapping sched-groups
	sched/topology: Optimize build_group_mask()
	sched/topology: Fix overlapping sched_group_mask
	PM / wakeirq: Convert to SRCU
	PM / QoS: return -EINVAL for bogus strings
	tracing: Use SOFTIRQ_OFFSET for softirq dectection for more accurate results
	kvm: vmx: Do not disable intercepts for BNDCFGS
	kvm: x86: Guest BNDCFGS requires guest MPX support
	kvm: vmx: Check value written to IA32_BNDCFGS
	kvm: vmx: allow host to access guest MSR_IA32_BNDCFGS
	4.9.39

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
 2017-07-21 08:55:50 +02:00
Peter Zijlstra 542ebc96c2 sched/fair, cpumask: Export for_each_cpu_wrap() 
commit c6508a39640b9a27fc2bc10cb708152672c82045 upstream.

commit c743f0a5c50f2fcbc628526279cfa24f3dabe182 upstream.

More users for for_each_cpu_wrap() have appeared. Promote the construct
to generic cpumask interface.

The implementation is slightly modified to reduce arguments.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Lauro Ramos Venancio <lvenanci@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: lwang@redhat.com
Link: http://lkml.kernel.org/r/20170414122005.o35me2h5nowqkxbv@hirez.programming.kicks-ass.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2017-07-21 07:42:23 +02:00
Greg Kroah-Hartman 184ce810ce Merge 4.9.36 into android-4.9 
Changes in 4.9.36
	ipv6: release dst on error in ip6_dst_lookup_tail
	net: don't call strlen on non-terminated string in dev_set_alias()
	decnet: dn_rtmsg: Improve input length sanitization in dnrmg_receive_user_skb
	net: Zero ifla_vf_info in rtnl_fill_vfinfo()
	net: vrf: Make add_fib_rules per network namespace flag
	af_unix: Add sockaddr length checks before accessing sa_family in bind and connect handlers
	Fix an intermittent pr_emerg warning about lo becoming free.
	sctp: disable BH in sctp_for_each_endpoint
	net: caif: Fix a sleep-in-atomic bug in cfpkt_create_pfx
	net: tipc: Fix a sleep-in-atomic bug in tipc_msg_reverse
	net/mlx5e: Added BW check for DIM decision mechanism
	net/mlx5e: Fix wrong indications in DIM due to counter wraparound
	proc: snmp6: Use correct type in memset
	igmp: acquire pmc lock for ip_mc_clear_src()
	igmp: add a missing spin_lock_init()
	ipv6: fix calling in6_ifa_hold incorrectly for dad work
	sctp: return next obj by passing pos + 1 into sctp_transport_get_idx
	net/mlx5e: Avoid doing a cleanup call if the profile doesn't have it
	net/mlx5: Wait for FW readiness before initializing command interface
	net/mlx5e: Fix timestamping capabilities reporting
	decnet: always not take dst->__refcnt when inserting dst into hash table
	net: 8021q: Fix one possible panic caused by BUG_ON in free_netdev
	sfc: provide dummy definitions of vswitch functions
	ipv6: Do not leak throw route references
	rtnetlink: add IFLA_GROUP to ifla_policy
	netfilter: xt_TCPMSS: add more sanity tests on tcph->doff
	netfilter: synproxy: fix conntrackd interaction
	NFSv4: fix a reference leak caused WARNING messages
	NFSv4.x/callback: Create the callback service through svc_create_pooled
	xen/blkback: don't use xen_blkif_get() in xen-blkback kthread
	drm/ast: Handle configuration without P2A bridge
	mm, swap_cgroup: reschedule when neeed in swap_cgroup_swapoff()
	MIPS: head: Reorder instructions missing a delay slot
	MIPS: Avoid accidental raw backtrace
	MIPS: pm-cps: Drop manual cache-line alignment of ready_count
	MIPS: Fix IRQ tracing & lockdep when rescheduling
	ALSA: hda - Fix endless loop of codec configure
	ALSA: hda - set input_path bitmap to zero after moving it to new place
	NFSv4.1: Fix a race in nfs4_proc_layoutget
	gpiolib: fix filtering out unwanted events
	drm/vmwgfx: Free hash table allocated by cmdbuf managed res mgr
	dm thin: do not queue freed thin mapping for next stage processing
	x86/mm: Fix boot crash caused by incorrect loop count calculation in sync_global_pgds()
	usb: gadget: f_fs: Fix possibe deadlock
	l2tp: fix race in l2tp_recv_common()
	l2tp: ensure session can't get removed during pppol2tp_session_ioctl()
	l2tp: fix duplicate session creation
	l2tp: hold session while sending creation notifications
	l2tp: take a reference on sessions used in genetlink handlers
	mm: numa: avoid waiting on freed migrated pages
	sparc64: Handle PIO & MEM non-resumable errors.
	sparc64: Zero pages on allocation for mondo and error queues.
	net: ethtool: add support for 2500BaseT and 5000BaseT link modes
	net: phy: add an option to disable EEE advertisement
	dt-bindings: net: add EEE capability constants
	net: phy: fix sign type error in genphy_config_eee_advert
	net: phy: use boolean dt properties for eee broken modes
	dt: bindings: net: use boolean dt properties for eee broken modes
	ARM64: dts: meson-gxbb-odroidc2: fix GbE tx link breakage
	xen/blkback: don't free be structure too early
	KVM: x86: fix fixing of hypercalls
	scsi: sd: Fix wrong DPOFUA disable in sd_read_cache_type
	stmmac: add missing of_node_put
	scsi: lpfc: Set elsiocb contexts to NULL after freeing it
	qla2xxx: Terminate exchange if corrupted
	qla2xxx: Fix erroneous invalid handle message
	drm/amdgpu: fix program vce instance logic error.
	drm/amdgpu: add support for new hainan variants
	net: phy: dp83848: add DP83620 PHY support
	perf/x86/intel: Handle exclusive threadid correctly on CPU hotplug
	net: korina: Fix NAPI versus resources freeing
	powerpc/eeh: Enable IO path on permanent error
	net: ethtool: Initialize buffer when querying device channel settings
	xen-netback: fix memory leaks on XenBus disconnect
	xen-netback: protect resource cleaning on XenBus disconnect
	bnxt_en: Fix "uninitialized variable" bug in TPA code path.
	bpf: don't trigger OOM killer under pressure with map alloc
	objtool: Fix IRET's opcode
	gianfar: Do not reuse pages from emergency reserve
	Btrfs: Fix deadlock between direct IO and fast fsync
	Btrfs: fix truncate down when no_holes feature is enabled
	virtio_console: fix a crash in config_work_handler
	swiotlb-xen: update dev_addr after swapping pages
	xen-netfront: Fix Rx stall during network stress and OOM
	scsi: virtio_scsi: Reject commands when virtqueue is broken
	iwlwifi: fix kernel crash when unregistering thermal zone
	platform/x86: ideapad-laptop: handle ACPI event 1
	amd-xgbe: Check xgbe_init() return code
	net: dsa: Check return value of phy_connect_direct()
	drm/amdgpu: check ring being ready before using
	vfio/spapr: fail tce_iommu_attach_group() when iommu_data is null
	mlxsw: spectrum_router: Correctly reallocate adjacency entries
	virtio_net: fix PAGE_SIZE > 64k
	ip6_tunnel: must reload ipv6h in ip6ip6_tnl_xmit()
	vxlan: do not age static remote mac entries
	ibmveth: Add a proper check for the availability of the checksum features
	kernel/panic.c: add missing \n
	Documentation: devicetree: change the mediatek ethernet compatible string
	drm/etnaviv: trick drm_mm into giving out a low IOVA
	perf/x86/intel/uncore: Fix hardcoded socket 0 assumption in the Haswell init code
	pinctrl: intel: Set pin direction properly
	net: phy: marvell: fix Marvell 88E1512 used in SGMII mode
	mac80211: recalculate min channel width on VHT opmode changes
	perf/x86/intel: Use ULL constant to prevent undefined shift behaviour
	HID: i2c-hid: Add sleep between POWER ON and RESET
	scsi: lpfc: avoid double free of resource identifiers
	spi: davinci: use dma_mapping_error()
	arm64: assembler: make adr_l work in modules under KASLR
	net: thunderx: acpi: fix LMAC initialization
	drm/radeon/si: load special ucode for certain MC configs
	drm/amd/powerplay: fix vce cg logic error on CZ/St.
	drm/amd/powerplay: refine vce dpm update code on Cz.
	pmem: return EIO on read_pmem() failure
	mac80211: initialize SMPS field in HT capabilities
	x86/tsc: Add the Intel Denverton Processor to native_calibrate_tsc()
	x86/mpx: Use compatible types in comparison to fix sparse error
	perf/core: Fix sys_perf_event_open() vs. hotplug
	perf/x86: Reject non sampling events with precise_ip
	aio: fix lock dep warning
	coredump: Ensure proper size of sparse core files
	swiotlb: ensure that page-sized mappings are page-aligned
	s390/ctl_reg: make __ctl_load a full memory barrier
	usb: dwc2: gadget: Fix GUSBCFG.USBTRDTIM value
	be2net: fix status check in be_cmd_pmac_add()
	be2net: don't delete MAC on close on unprivileged BE3 VFs
	be2net: fix MAC addr setting on privileged BE3 VFs
	perf probe: Fix to show correct locations for events on modules
	net: phy: dp83867: allow RGMII_TXID/RGMII_RXID interface types
	tipc: allocate user memory with GFP_KERNEL flag
	perf probe: Fix to probe on gcc generated functions in modules
	net/mlx4_core: Eliminate warning messages for SRQ_LIMIT under SRIOV
	sctp: check af before verify address in sctp_addr_id2transport
	ip6_tunnel, ip6_gre: fix setting of DSCP on encapsulated packets
	ravb: Fix use-after-free on `ifconfig eth0 down`
	mm/vmalloc.c: huge-vmap: fail gracefully on unexpected huge vmap mappings
	xfrm: fix stack access out of bounds with CONFIG_XFRM_SUB_POLICY
	xfrm: NULL dereference on allocation failure
	xfrm: Oops on error in pfkey_msg2xfrm_state()
	netfilter: use skb_to_full_sk in ip_route_me_harder
	watchdog: bcm281xx: Fix use of uninitialized spinlock.
	sched/loadavg: Avoid loadavg spikes caused by delayed NO_HZ accounting
	spi: When no dma_chan map buffers with spi_master's parent
	spi: fix device-node leaks
	regulator: tps65086: Fix expected switch DT node names
	regulator: tps65086: Fix DT node referencing in of_parse_cb
	ARM: OMAP2+: omap_device: Sync omap_device and pm_runtime after probe defer
	ARM: dts: OMAP3: Fix MFG ID EEPROM
	ARM64/ACPI: Fix BAD_MADT_GICC_ENTRY() macro implementation
	ARM: 8685/1: ensure memblock-limit is pmd-aligned
	tools arch: Sync arch/x86/lib/memcpy_64.S with the kernel
	x86/boot/KASLR: Fix kexec crash due to 'virt_addr' calculation bug
	x86/mpx: Correctly report do_mpx_bt_fault() failures to user-space
	x86/mm: Fix flush_tlb_page() on Xen
	ocfs2: o2hb: revert hb threshold to keep compatible
	iommu/vt-d: Don't over-free page table directories
	iommu: Handle default domain attach failure
	iommu/dma: Don't reserve PCI I/O windows
	iommu/amd: Fix incorrect error handling in amd_iommu_bind_pasid()
	iommu/amd: Fix interrupt remapping when disable guest_mode
	cpufreq: s3c2416: double free on driver init error path
	clk: scpi: don't add cpufreq device if the scpi dvfs node is disabled
	objtool: Fix another GCC jump table detection issue
	infiniband: hns: avoid gcc-7.0.1 warning for uninitialized data
	brcmfmac: avoid writing channel out of allocated array
	i2c: brcmstb: Fix START and STOP conditions
	mtd: nand: brcmnand: Check flash #WP pin status before nand erase/program
	arm64: fix NULL dereference in have_cpu_die()
	KVM: x86: fix emulation of RSM and IRET instructions
	KVM: x86/vPMU: fix undefined shift in intel_pmu_refresh()
	KVM: x86: zero base3 of unusable segments
	KVM: nVMX: Fix exception injection
	Linux 4.9.36

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
 2017-07-05 16:18:14 +02:00
Nikita Yushchenko 9d00195bc0 swiotlb: ensure that page-sized mappings are page-aligned 
[ Upstream commit 602d9858f07c72eab64f5f00e2fae55f9902cfbe ]

Some drivers do depend on page mappings to be page aligned.

Swiotlb already enforces such alignment for mappings greater than page,
extend that to page-sized mappings as well.

Without this fix, nvme hits BUG() in nvme_setup_prps(), because that routine
assumes page-aligned mappings.

Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Konrad Rzeszutek Wilk <konrad@kernel.org>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2017-07-05 14:40:26 +02:00
Greg Kroah-Hartman 75d78c7eda Merge 4.9.35 into android-4.9 
Changes in 4.9.35
	clk: sunxi-ng: a31: Correct lcd1-ch1 clock register offset
	xen/blkback: fix disconnect while I/Os in flight
	xen-blkback: don't leak stack data via response ring
	ALSA: firewire-lib: Fix stall of process context at packet error
	ALSA: pcm: Don't treat NULL chmap as a fatal error
	fs/exec.c: account for argv/envp pointers
	powerpc/perf: Fix oops when kthread execs user process
	autofs: sanity check status reported with AUTOFS_DEV_IOCTL_FAIL
	lib/cmdline.c: fix get_options() overflow while parsing ranges
	perf/x86/intel: Add 1G DTLB load/store miss support for SKL
	KVM: s390: gaccess: fix real-space designation asce handling for gmap shadows
	KVM: PPC: Book3S HV: Preserve userspace HTM state properly
	KVM: PPC: Book3S HV: Context-switch EBB registers properly
	CIFS: Improve readdir verbosity
	cxgb4: notify uP to route ctrlq compl to rdma rspq
	HID: Add quirk for Dell PIXART OEM mouse
	signal: Only reschedule timers on signals timers have sent
	powerpc/kprobes: Pause function_graph tracing during jprobes handling
	powerpc/64s: Handle data breakpoints in Radix mode
	Input: i8042 - add Fujitsu Lifebook AH544 to notimeout list
	brcmfmac: add parameter to pass error code in firmware callback
	brcmfmac: use firmware callback upon failure to load
	brcmfmac: unbind all devices upon failure in firmware callback
	time: Fix clock->read(clock) race around clocksource changes
	time: Fix CLOCK_MONOTONIC_RAW sub-nanosecond accounting
	arm64/vdso: Fix nsec handling for CLOCK_MONOTONIC_RAW
	target: Fix kref->refcount underflow in transport_cmd_finish_abort
	iscsi-target: Fix delayed logout processing greater than SECONDS_FOR_LOGOUT_COMP
	iscsi-target: Reject immediate data underflow larger than SCSI transfer length
	drm/radeon: add a PX quirk for another K53TK variant
	drm/radeon: add a quirk for Toshiba Satellite L20-183
	drm/amdgpu/atom: fix ps allocation size for EnableDispPowerGating
	drm/amdgpu: adjust default display clock
	rxrpc: Fix several cases where a padded len isn't checked in ticket decode
	of: Add check to of_scan_flat_dt() before accessing initial_boot_params
	mtd: spi-nor: fix spansion quad enable
	usb: gadget: f_fs: avoid out of bounds access on comp_desc
	rt2x00: avoid introducing a USB dependency in the rt2x00lib module
	net: phy: Initialize mdio clock at probe function
	dmaengine: bcm2835: Fix cyclic DMA period splitting
	spi: double time out tolerance
	net: phy: fix marvell phy status reading
	jump label: fix passing kbuild_cflags when checking for asm goto support
	brcmfmac: fix uninitialized warning in brcmf_usb_probe_phase2()
	Linux 4.9.35

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
 2017-06-29 14:26:07 +02:00
Ilya Matveychikov 7c679fe729 lib/cmdline.c: fix get_options() overflow while parsing ranges 
commit a91e0f680bcd9e10c253ae8b62462a38bd48f09f upstream.

When using get_options() it's possible to specify a range of numbers,
like 1-100500.  The problem is that it doesn't track array size while
calling internally to get_range() which iterates over the range and
fills the memory with numbers.

Link: http://lkml.kernel.org/r/2613C75C-B04D-4BFF-82A6-12F97BA0F620@gmail.com
Signed-off-by: Ilya V. Matveychikov <matvejchikov@gmail.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2017-06-29 13:00:28 +02:00
Greg Kroah-Hartman 7172a93a70 Merge 4.9.34 into android-4.9 
Changes in 4.9.34
	fs: pass on flags in compat_writev
	configfs: Fix race between create_link and configfs_rmdir
	can: gs_usb: fix memory leak in gs_cmd_reset()
	ila_xlat: add missing hash secret initialization
	cpufreq: conservative: Allow down_threshold to take values from 1 to 10
	vb2: Fix an off by one error in 'vb2_plane_vaddr'
	mac80211: don't look at the PM bit of BAR frames
	mac80211/wpa: use constant time memory comparison for MACs
	drm/amdgpu: Fix overflow of watermark calcs at > 4k resolutions.
	drm/i915: Fix GVT-g PVINFO version compatibility check
	usb: musb: dsps: keep VBUS on for host-only mode
	mac80211: fix CSA in IBSS mode
	mac80211: fix packet statistics for fast-RX
	mac80211: fix IBSS presp allocation size
	mac80211: strictly check mesh address extension mode
	mac80211: fix dropped counter in multiqueue RX
	mac80211: don't send SMPS action frame in AP mode when not needed
	drm/mediatek: fix mtk_hdmi_setup_vendor_specific_infoframe mistake
	drm/vc4: Fix OOPSes from trying to cache a partially constructed BO.
	serial: efm32: Fix parity management in 'efm32_uart_console_get_options()'
	serial: sh-sci: Fix late enablement of AUTORTS
	x86/mm/32: Set the '__vmalloc_start_set' flag in initmem_init()
	mfd: omap-usb-tll: Fix inverted bit use for USB TLL mode
	staging: rtl8188eu: prevent an underflow in rtw_check_beacon_data()
	staging: iio: tsl2x7x_core: Fix standard deviation calculation
	iio: st_pressure: Fix data sign
	iio: proximity: as3935: recalibrate RCO after resume
	iio: adc: ti_am335x_adc: allocating too much in probe
	IB/mlx5: Fix kernel to user leak prevention logic
	usb: gadget: udc: renesas_usb3: fix pm_runtime functions calling
	usb: gadget: udc: renesas_usb3: fix deadlock by spinlock
	usb: gadget: udc: renesas_usb3: lock for PN_ registers access
	USB: hub: fix SS max number of ports
	usb: core: fix potential memory leak in error path during hcd creation
	USB: usbip: fix nonconforming hub descriptor
	pvrusb2: reduce stack usage pvr2_eeprom_analyze()
	USB: gadget: dummy_hcd: fix hub-descriptor removable fields
	usb: r8a66597-hcd: select a different endpoint on timeout
	usb: r8a66597-hcd: decrease timeout
	ath10k: fix napi crash during rmmod when probe firmware fails
	misc: mic: double free on ioctl error path
	drivers/misc/c2port/c2port-duramar2150.c: checking for NULL instead of IS_ERR()
	usb: xhci: Fix USB 3.1 supported protocol parsing
	usb: xhci: ASMedia ASM1042A chipset need shorts TX quirk
	USB: gadget: fix GPF in gadgetfs
	USB: gadgetfs, dummy-hcd, net2280: fix locking for callbacks
	mm/memory-failure.c: use compound_head() flags for huge pages
	swap: cond_resched in swap_cgroup_prepare()
	iio: imu: inv_mpu6050: add accel lpf setting for chip >= MPU6500
	sched/core: Idle_task_exit() shouldn't use switch_mm_irqs_off()
	genirq: Release resources in __setup_irq() error path
	alarmtimer: Prevent overflow of relative timers
	usb: gadget: composite: Fix function used to free memory
	usb: dwc3: exynos fix axius clock error path to do cleanup
	MIPS: Fix bnezc/jialc return address calculation
	MIPS: .its targets depend on vmlinux
	vTPM: Fix missing NULL check
	crypto: Work around deallocated stack frame reference gcc bug on sparc.
	alarmtimer: Rate limit periodic intervals
	mm: larger stack guard gap, between vmas
	Allow stack to grow up to address space limit
	mm: fix new crash in unmapped_area_topdown()
	Linux 4.9.34

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
 2017-06-27 10:43:56 +02:00
Greg Kroah-Hartman a26cd8eba6 Revert "ANDROID: hardlockup: detect hard lockups without NMIs using secondary cpus" 
This reverts commit aaf78ec6c8.

We need to do this to handle a merge conflict with 4.9.32.  It will be
forward ported after the merge is complete.

Cc: Brian Norris <briannorris@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
 2017-06-27 10:31:16 +02:00
David Miller b355b899c7 crypto: Work around deallocated stack frame reference gcc bug on sparc. 
commit d41519a69b35b10af7fda867fb9100df24fdf403 upstream.

On sparc, if we have an alloca() like situation, as is the case with
SHASH_DESC_ON_STACK(), we can end up referencing deallocated stack
memory.  The result can be that the value is clobbered if a trap
or interrupt arrives at just the right instruction.

It only occurs if the function ends returning a value from that
alloca() area and that value can be placed into the return value
register using a single instruction.

For example, in lib/libcrc32c.c:crc32c() we end up with a return
sequence like:

        return  %i7+8
         lduw   [%o5+16], %o0   ! MEM[(u32 *)__shash_desc.1_10 + 16B],

%o5 holds the base of the on-stack area allocated for the shash
descriptor.  But the return released the stack frame and the
register window.

So if an intererupt arrives between 'return' and 'lduw', then
the value read at %o5+16 can be corrupted.

Add a data compiler barrier to work around this problem.  This is
exactly what the gcc fix will end up doing as well, and it absolutely
should not change the code generated for other cpus (unless gcc
on them has the same bug :-)

With crucial insight from Eric Sandeen.

Reported-by: Anatoly Pugachev <matorola@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2017-06-24 07:11:17 +02:00
Greg Kroah-Hartman da3493c028 Merge 4.9.32 into android-4.9 
Changes in 4.9.32
	bnx2x: Fix Multi-Cos
	vxlan: eliminate cached dst leak
	ipv6: xfrm: Handle errors reported by xfrm6_find_1stfragopt()
	cxgb4: avoid enabling napi twice to the same queue
	tcp: disallow cwnd undo when switching congestion control
	vxlan: fix use-after-free on deletion
	ipv6: Fix leak in ipv6_gso_segment().
	net: ping: do not abuse udp_poll()
	net/ipv6: Fix CALIPSO causing GPF with datagram support
	net: ethoc: enable NAPI before poll may be scheduled
	net: stmmac: fix completely hung TX when using TSO
	net: bridge: start hello timer only if device is up
	sparc64: Add __multi3 for gcc 7.x and later.
	sparc64: mm: fix copy_tsb to correctly copy huge page TSBs
	sparc: Machine description indices can vary
	sparc64: reset mm cpumask after wrap
	sparc64: combine activate_mm and switch_mm
	sparc64: redefine first version
	sparc64: add per-cpu mm of secondary contexts
	sparc64: new context wrap
	sparc64: delete old wrap code
	arch/sparc: support NR_CPUS = 4096
	serial: ifx6x60: fix use-after-free on module unload
	ptrace: Properly initialize ptracer_cred on fork
	crypto: asymmetric_keys - handle EBUSY due to backlog correctly
	KEYS: fix dereferencing NULL payload with nonzero length
	KEYS: fix freeing uninitialized memory in key_update()
	KEYS: encrypted: avoid encrypting/decrypting stack buffers
	crypto: drbg - wait for crypto op not signal safe
	crypto: gcm - wait for crypto op not signal safe
	drm/amdgpu/ci: disable mclk switching for high refresh rates (v2)
	nfsd4: fix null dereference on replay
	nfsd: Fix up the "supattr_exclcreat" attributes
	efi: Don't issue error message when booted under Xen
	kvm: async_pf: fix rcu_irq_enter() with irqs enabled
	KVM: cpuid: Fix read/write out-of-bounds vulnerability in cpuid emulation
	arm64: KVM: Preserve RES1 bits in SCTLR_EL2
	arm64: KVM: Allow unaligned accesses at EL2
	arm: KVM: Allow unaligned accesses at HYP
	KVM: async_pf: avoid async pf injection when in guest mode
	KVM: arm/arm64: vgic-v3: Do not use Active+Pending state for a HW interrupt
	KVM: arm/arm64: vgic-v2: Do not use Active+Pending state for a HW interrupt
	dmaengine: usb-dmac: Fix DMAOR AE bit definition
	dmaengine: ep93xx: Always start from BASE0
	dmaengine: ep93xx: Don't drain the transfers in terminate_all()
	dmaengine: mv_xor_v2: handle mv_xor_v2_prep_sw_desc() error properly
	dmaengine: mv_xor_v2: properly handle wrapping in the array of HW descriptors
	dmaengine: mv_xor_v2: do not use descriptors not acked by async_tx
	dmaengine: mv_xor_v2: enable XOR engine after its configuration
	dmaengine: mv_xor_v2: fix tx_submit() implementation
	dmaengine: mv_xor_v2: remove interrupt coalescing
	dmaengine: mv_xor_v2: set DMA mask to 40 bits
	cfq-iosched: fix the delay of cfq_group's vdisktime under iops mode
	xen/privcmd: Support correctly 64KB page granularity when mapping memory
	ext4: fix SEEK_HOLE
	ext4: keep existing extra fields when inode expands
	ext4: fix data corruption with EXT4_GET_BLOCKS_ZERO
	ext4: fix fdatasync(2) after extent manipulation operations
	drm: Fix oops + Xserver hang when unplugging USB drm devices
	usb: gadget: f_mass_storage: Serialize wake and sleep execution
	usb: chipidea: udc: fix NULL pointer dereference if udc_start failed
	usb: chipidea: debug: check before accessing ci_role
	staging/lustre/lov: remove set_fs() call from lov_getstripe()
	iio: adc: bcm_iproc_adc: swap primary and secondary isr handler's
	iio: light: ltr501 Fix interchanged als/ps register field
	iio: proximity: as3935: fix AS3935_INT mask
	iio: proximity: as3935: fix iio_trigger_poll issue
	mei: make sysfs modalias format similar as uevent modalias
	cpufreq: cpufreq_register_driver() should return -ENODEV if init fails
	target: Re-add check to reject control WRITEs with overflow data
	drm/msm: Expose our reservation object when exporting a dmabuf.
	ahci: Acer SA5-271 SSD Not Detected Fix
	cgroup: Prevent kill_css() from being called more than once
	Input: elantech - add Fujitsu Lifebook E546/E557 to force crc_enabled
	cpuset: consider dying css as offline
	fs: add i_blocksize()
	ufs: restore proper tail allocation
	fix ufs_isblockset()
	ufs: restore maintaining ->i_blocks
	ufs: set correct ->s_maxsize
	ufs_extend_tail(): fix the braino in calling conventions of ufs_new_fragments()
	ufs_getfrag_block(): we only grab ->truncate_mutex on block creation path
	cxl: Fix error path on bad ioctl
	cxl: Avoid double free_irq() for psl,slice interrupts
	btrfs: use correct types for page indices in btrfs_page_exists_in_range
	btrfs: fix memory leak in update_space_info failure path
	KVM: arm/arm64: Handle possible NULL stage2 pud when ageing pages
	scsi: qla2xxx: don't disable a not previously enabled PCI device
	scsi: qla2xxx: Modify T262 FW dump template to specify same start/end to debug customer issues
	scsi: qla2xxx: Set bit 15 for DIAG_ECHO_TEST MBC
	scsi: qla2xxx: Fix mailbox pointer error in fwdump capture
	powerpc/sysdev/simple_gpio: Fix oops in gpio save_regs function
	powerpc/numa: Fix percpu allocations to be NUMA aware
	powerpc/hotplug-mem: Fix missing endian conversion of aa_index
	powerpc/kernel: Fix FP and vector register restoration
	powerpc/kernel: Initialize load_tm on task creation
	perf/core: Drop kernel samples even though :u is specified
	drm/vmwgfx: Handle vmalloc() failure in vmw_local_fifo_reserve()
	drm/vmwgfx: limit the number of mip levels in vmw_gb_surface_define_ioctl()
	drm/vmwgfx: Make sure backup_handle is always valid
	drm/nouveau/tmr: fully separate alarm execution/pending lists
	ALSA: timer: Fix race between read and ioctl
	ALSA: timer: Fix missing queue indices reset at SNDRV_TIMER_IOCTL_SELECT
	ASoC: Fix use-after-free at card unregistration
	cpu/hotplug: Drop the device lock on error
	drivers: char: mem: Fix wraparound check to allow mappings up to the end
	serial: sh-sci: Fix panic when serial console and DMA are enabled
	arm64: traps: fix userspace cache maintenance emulation on a tagged pointer
	arm64: hw_breakpoint: fix watchpoint matching for tagged pointers
	arm64: entry: improve data abort handling of tagged pointers
	ARM: 8636/1: Cleanup sanity_check_meminfo
	ARM: 8637/1: Adjust memory boundaries after reservations
	usercopy: Adjust tests to deal with SMAP/PAN
	drm/i915/vbt: don't propagate errors from intel_bios_init()
	drm/i915/vbt: split out defaults that are set when there is no VBT
	cpufreq: schedutil: move cached_raw_freq to struct sugov_policy
	cpufreq: schedutil: Fix per-CPU structure initialization in sugov_start()
	netfilter: nft_set_rbtree: handle element re-addition after deletion
	Linux 4.9.32

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
 2017-06-14 16:42:56 +02:00
Kees Cook a6a7d8ade8 usercopy: Adjust tests to deal with SMAP/PAN 
commit f5f893c57e37ca730808cb2eee3820abd05e7507 upstream.

Under SMAP/PAN/etc, we cannot write directly to userspace memory, so
this rearranges the test bytes to get written through copy_to_user().
Additionally drops the bad copy_from_user() test that would trigger a
memcpy() against userspace on failure.

[arnd: the test module was added in 3.14, and this backported patch
       should apply cleanly on all version from 3.14 to 4.10.
       The original patch was in 4.11 on top of a context change
       I saw the bug triggered with kselftest on a 4.4.y stable kernel]

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2017-06-14 15:06:05 +02:00
Greg Kroah-Hartman a745b345b7 Merge 4.9.28 into android-4.9 
Changes in 4.9.28
	9p: fix a potential acl leak
	drm/sti: fix GDP size to support up to UHD resolution
	hwmon: (it87) Fix pwm4 detection for IT8620 and IT8628
	tpm: fix RC value check in tpm2_seal_trusted
	tmp: use pdev for parent device in tpm_chip_alloc
	crypto: caam - fix error path for ctx_dma mapping failure
	power: supply: lp8788: prevent out of bounds array access
	cpupower: Fix turbo frequency reporting for pre-Sandy Bridge cores
	powerpc/mm: Fixup wrong LPCR_VRMASD value
	powerpc/powernv: Fix opal_exit tracepoint opcode
	powerpc/ftrace: Fix confusing help text for DISABLE_MPROFILE_KERNEL
	powerpc: Correctly disable latent entropy GCC plugin on prom_init.o
	perf/x86/intel/pt: Add format strings for PTWRITE and power event tracing
	power: supply: bq24190_charger: Fix irq trigger to IRQF_TRIGGER_FALLING
	power: supply: bq24190_charger: Call set_mode_host() on pm_resume()
	power: supply: bq24190_charger: Install irq_handler_thread() at end of probe()
	power: supply: bq24190_charger: Call power_supply_changed() for relevant component
	power: supply: bq24190_charger: Don't read fault register outside irq_handle_thread()
	power: supply: bq24190_charger: Handle fault before status on interrupt
	arm64: dts: r8a7795: Mark EthernetAVB device node disabled
	arm: dts: qcom: Fix ipq board clock rates
	arm64: Improve detection of user/non-user mappings in set_pte(_at)
	leds: ktd2692: avoid harmless maybe-uninitialized warning
	ARM: dts: NSP: GPIO reboot open-source
	ARM: OMAP5 / DRA7: Fix HYP mode boot for thumb2 build
	ARM: dts: sun7i: lamobo-r1: Fix CPU port RGMII settings
	mwifiex: debugfs: Fix (sometimes) off-by-1 SSID print
	mwifiex: remove redundant dma padding in AMSDU
	mwifiex: Avoid skipping WEP key deletion for AP
	iwlwifi: fix MODULE_FIRMWARE for 6030
	iwlwifi: mvm: don't restart HW if suspend fails with unified image
	iwlwifi: mvm: overwrite skb info later
	iwlwifi: pcie: don't increment / decrement a bool
	iwlwifi: pcie: trans: Remove unused 'shift_param'
	iwlwifi: pcie: fix the set of DMA memory mask
	iwlwifi: mvm: fix reorder timer re-arming
	iwlwifi: mvm: Use aux queue for offchannel frames in dqa
	iwlwifi: mvm/pcie: adjust A-MSDU tx_cmd length in PCIe
	iwlwifi: mvm: fix pending frame counter calculation
	iwlwifi: mvm: fix references to first_agg_queue in DQA mode
	iwlwifi: mvm: synchronize firmware DMA paging memory
	iwlwifi: mvm: writing zero bytes to debugfs causes a crash
	x86/ioapic: Restore IO-APIC irq_chip retrigger callback
	x86/pci-calgary: Fix iommu_free() comparison of unsigned expression >= 0
	x86/mpx: Re-add MPX to selftests Makefile
	clk: Make x86/ conditional on CONFIG_COMMON_CLK
	kprobes/x86: Fix kernel panic when certain exception-handling addresses are probed
	x86/platform/intel-mid: Correct MSI IRQ line for watchdog device
	Revert "KVM: nested VMX: disable perf cpuid reporting"
	KVM: nVMX: initialize PML fields in vmcs02
	KVM: nVMX: do not leak PML full vmexit to L1
	usb: dwc2: host: use msleep() for long delay
	usb: host: ehci-exynos: Decrese node refcount on exynos_ehci_get_phy() error paths
	usb: host: ohci-exynos: Decrese node refcount on exynos_ehci_get_phy() error paths
	usb: chipidea: Only read/write OTGSC from one place
	usb: chipidea: Handle extcon events properly
	USB: serial: keyspan_pda: fix receive sanity checks
	USB: serial: digi_acceleport: fix incomplete rx sanity check
	USB: serial: ssu100: fix control-message error handling
	USB: serial: io_edgeport: fix epic-descriptor handling
	USB: serial: ti_usb_3410_5052: fix control-message error handling
	USB: serial: ark3116: fix open error handling
	USB: serial: ftdi_sio: fix latency-timer error handling
	USB: serial: quatech2: fix control-message error handling
	USB: serial: mct_u232: fix modem-status error handling
	USB: serial: io_edgeport: fix descriptor error handling
	clk: rockchip: add "," to mux_pll_src_apll_dpll_gpll_usb480m_p on rk3036
	phy: qcom-usb-hs: Add depends on EXTCON
	serial: 8250_omap: Fix probe and remove for PM runtime
	scsi: qla2xxx: Fix crash in qla2xxx_eh_abort on bad ptr
	scsi: mac_scsi: Fix MAC_SCSI=m option when SCSI=m
	scsi: smartpqi: fix time handling
	MIPS: R2-on-R6 MULTU/MADDU/MSUBU emulation bugfix
	brcmfmac: Ensure pointer correctly set if skb data location changes
	brcmfmac: Make skb header writable before use
	staging/lustre/llite: move root_squash from sysfs to debugfs
	staging: wlan-ng: add missing byte order conversion
	staging: emxx_udc: remove incorrect __init annotations
	ALSA: hda - Fix deadlock of controller device lock at unbinding
	sparc64: fix fault handling in NGbzero.S and GENbzero.S
	macsec: dynamically allocate space for sglist
	tcp: do not underestimate skb->truesize in tcp_trim_head()
	bpf: enhance verifier to understand stack pointer arithmetic
	bpf, arm64: fix jit branch offset related to ldimm64
	tcp: fix wraparound issue in tcp_lp
	net: ipv6: Do not duplicate DAD on link up
	net: usb: qmi_wwan: add Telit ME910 support
	tcp: do not inherit fastopen_req from parent
	ipv4, ipv6: ensure raw socket message is big enough to hold an IP header
	rtnetlink: NUL-terminate IFLA_PHYS_PORT_NAME string
	ipv6: initialize route null entry in addrconf_init()
	ipv6: reorder ip6_route_dev_notifier after ipv6_dev_notf
	bnxt_en: allocate enough space for ->ntp_fltr_bmap
	bpf: don't let ldimm64 leak map addresses on unprivileged
	net: mdio-mux: bcm-iproc: call mdiobus_free() in error path
	f2fs: sanity check segment count
	xen: Revert commits da72ff5bfcb0 and 72a9b18629
	wlcore: Pass win_size taken from ieee80211_sta to FW
	wlcore: Add RX_BA_WIN_SIZE_CHANGE_EVENT event
	drm/ttm: fix use-after-free races in vm fault handling
	block: get rid of blk_integrity_revalidate()
	Linux 4.9.28

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
 2017-05-15 09:26:49 +02:00
Daniel Borkmann 493d0a7be3 bpf, arm64: fix jit branch offset related to ldimm64 
[ Upstream commit ddc665a4bb4b728b4e6ecec8db1b64efa9184b9c ]

When the instruction right before the branch destination is
a 64 bit load immediate, we currently calculate the wrong
jump offset in the ctx->offset[] array as we only account
one instruction slot for the 64 bit load immediate although
it uses two BPF instructions. Fix it up by setting the offset
into the right slot after we incremented the index.

Before (ldimm64 test 1):

  [...]
  00000020:  52800007  mov w7, #0x0 // #0
  00000024:  d2800060  mov x0, #0x3 // #3
  00000028:  d2800041  mov x1, #0x2 // #2
  0000002c:  eb01001f  cmp x0, x1
  00000030:  54ffff82  b.cs 0x00000020
  00000034:  d29fffe7  mov x7, #0xffff // #65535
  00000038:  f2bfffe7  movk x7, #0xffff, lsl #16
  0000003c:  f2dfffe7  movk x7, #0xffff, lsl #32
  00000040:  f2ffffe7  movk x7, #0xffff, lsl #48
  00000044:  d29dddc7  mov x7, #0xeeee // #61166
  00000048:  f2bdddc7  movk x7, #0xeeee, lsl #16
  0000004c:  f2ddddc7  movk x7, #0xeeee, lsl #32
  00000050:  f2fdddc7  movk x7, #0xeeee, lsl #48
  [...]

After (ldimm64 test 1):

  [...]
  00000020:  52800007  mov w7, #0x0 // #0
  00000024:  d2800060  mov x0, #0x3 // #3
  00000028:  d2800041  mov x1, #0x2 // #2
  0000002c:  eb01001f  cmp x0, x1
  00000030:  540000a2  b.cs 0x00000044
  00000034:  d29fffe7  mov x7, #0xffff // #65535
  00000038:  f2bfffe7  movk x7, #0xffff, lsl #16
  0000003c:  f2dfffe7  movk x7, #0xffff, lsl #32
  00000040:  f2ffffe7  movk x7, #0xffff, lsl #48
  00000044:  d29dddc7  mov x7, #0xeeee // #61166
  00000048:  f2bdddc7  movk x7, #0xeeee, lsl #16
  0000004c:  f2ddddc7  movk x7, #0xeeee, lsl #32
  00000050:  f2fdddc7  movk x7, #0xeeee, lsl #48
  [...]

Also, add a couple of test cases to make sure JITs pass
this test. Tested on Cavium ThunderX ARMv8. The added
test cases all pass after the fix.

Fixes: 8eee539dde ("arm64: bpf: fix out-of-bounds read in bpf2a64_offset()")
Reported-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Cc: Xi Wang <xi.wang@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2017-05-14 14:00:21 +02:00
Greg Kroah-Hartman a2659b2b78 Merge 4.9.24 into android-4.9 
Changes in 4.9.24:
	cgroup, kthread: close race window where new kthreads can be migrated to non-root cgroups
	tcmu: Fix possible overwrite of t_data_sg's last iov[]
	tcmu: Fix wrongly calculating of the base_command_size
	tcmu: Skip Data-Out blocks before gathering Data-In buffer for BIDI case
	thp: fix MADV_DONTNEED vs. MADV_FREE race
	thp: fix MADV_DONTNEED vs clear soft dirty race
	zsmalloc: expand class bit
	orangefs: free superblock when mount fails
	drm/nouveau/mpeg: mthd returns true on success now
	drm/nouveau/mmu/nv4a: use nv04 mmu rather than the nv44 one
	drm/etnaviv: fix missing unlock on error in etnaviv_gpu_submit()
	CIFS: reconnect thread reschedule itself
	CIFS: store results of cifs_reopen_file to avoid infinite wait
	Input: xpad - add support for Razer Wildcat gamepad
	perf/x86: Avoid exposing wrong/stale data in intel_pmu_lbr_read_32()
	x86/efi: Don't try to reserve runtime regions
	x86/signals: Fix lower/upper bound reporting in compat siginfo
	x86, pmem: fix broken __copy_user_nocache cache-bypass assumptions
	x86/vdso: Ensure vdso32_enabled gets set to valid values only
	x86/vdso: Plug race between mapping and ELF header setup
	acpi, nfit, libnvdimm: fix interleave set cookie calculation (64-bit comparison)
	ACPI / scan: Set the visited flag for all enumerated devices
	parisc: fix bugs in pa_memcpy
	efi/libstub: Skip GOP with PIXEL_BLT_ONLY format
	efi/fb: Avoid reconfiguration of BAR that covers the framebuffer
	iscsi-target: Fix TMR reference leak during session shutdown
	iscsi-target: Drop work-around for legacy GlobalSAN initiator
	scsi: sr: Sanity check returned mode data
	scsi: sd: Consider max_xfer_blocks if opt_xfer_blocks is unusable
	scsi: qla2xxx: Add fix to read correct register value for ISP82xx.
	scsi: sd: Fix capacity calculation with 32-bit sector_t
	target: Avoid mappedlun symlink creation during lun shutdown
	xen, fbfront: fix connecting to backend
	new privimitive: iov_iter_revert()
	make skb_copy_datagram_msg() et.al. preserve ->msg_iter on error
	libnvdimm: fix blk free space accounting
	libnvdimm: fix reconfig_mutex, mmap_sem, and jbd2_handle lockdep splat
	can: ifi: use correct register to read rx status
	pwm: rockchip: State of PWM clock should synchronize with PWM enabled state
	cpufreq: Bring CPUs up even if cpufreq_online() failed
	irqchip/irq-imx-gpcv2: Fix spinlock initialization
	ftrace: Fix removing of second function probe
	char: lack of bool string made CONFIG_DEVPORT always on
	Revert "MIPS: Lantiq: Fix cascaded IRQ setup"
	kvm: fix page struct leak in handle_vmon
	zram: do not use copy_page with non-page aligned address
	ftrace: Fix function pid filter on instances
	crypto: algif_aead - Fix bogus request dereference in completion function
	crypto: ahash - Fix EINPROGRESS notification callback
	parisc: Fix get_user() for 64-bit value on 32-bit kernel
	ath9k: fix NULL pointer dereference
	dvb-usb-v2: avoid use-after-free
	ext4: fix inode checksum calculation problem if i_extra_size is small
	mm: memcontrol: use special workqueue for creating per-memcg caches
	drm/nouveau/disp/mcp7x: disable dptmds workaround
	nbd: use loff_t for blocksize and nbd_set_size args
	nbd: fix 64-bit division
	ASoC: Intel: select DW_DMAC_CORE since it's mandatory
	platform/x86: acer-wmi: setup accelerometer when machine has appropriate notify event
	x86/xen: Fix APIC id mismatch warning on Intel
	ACPI / EC: Use busy polling mode when GPE is not enabled
	rtc: tegra: Implement clock handling
	mm: Tighten x86 /dev/mem with zeroing reads
	dvb-usb: don't use stack for firmware load
	dvb-usb-firmware: don't do DMA on stack
	cxusb: Use a dma capable buffer also for reading
	virtio-console: avoid DMA from stack
	net: ipv6: check route protocol when deleting routes
	sctp: deny peeloff operation on asocs with threads sleeping on it
	Linux 4.9.24

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
 2017-04-21 09:48:33 +02:00
Al Viro ff76ab9e03 new privimitive: iov_iter_revert() 
commit 27c0e3748e41ca79171ffa3e97415a20af6facd0 upstream.

opposite to iov_iter_advance(); the caller is responsible for never
using it to move back past the initial position.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2017-04-21 09:31:21 +02:00
Greg Kroah-Hartman 68565811fe Merge 4.9.21 into android-4.9 
Changes in 4.9.21:
	libceph: force GFP_NOIO for socket allocations
	xen/setup: Don't relocate p2m over existing one
	xfs: only update mount/resv fields on success in __xfs_ag_resv_init
	xfs: use per-AG reservations for the finobt
	xfs: pull up iolock from xfs_free_eofblocks()
	xfs: sync eofblocks scans under iolock are livelock prone
	xfs: fix eofblocks race with file extending async dio writes
	xfs: fix toctou race when locking an inode to access the data map
	xfs: fail _dir_open when readahead fails
	xfs: filter out obviously bad btree pointers
	xfs: check for obviously bad level values in the bmbt root
	xfs: verify free block header fields
	xfs: allow unwritten extents in the CoW fork
	xfs: mark speculative prealloc CoW fork extents unwritten
	xfs: reset b_first_retry_time when clear the retry status of xfs_buf_t
	xfs: update ctime and mtime on clone destinatation inodes
	xfs: reject all unaligned direct writes to reflinked files
	xfs: don't fail xfs_extent_busy allocation
	xfs: handle indlen shortage on delalloc extent merge
	xfs: split indlen reservations fairly when under reserved
	xfs: fix uninitialized variable in _reflink_convert_cow
	xfs: don't reserve blocks for right shift transactions
	xfs: Use xfs_icluster_size_fsb() to calculate inode chunk alignment
	xfs: tune down agno asserts in the bmap code
	xfs: only reclaim unwritten COW extents periodically
	xfs: fix and streamline error handling in xfs_end_io
	xfs: Use xfs_icluster_size_fsb() to calculate inode alignment mask
	xfs: use iomap new flag for newly allocated delalloc blocks
	xfs: try any AG when allocating the first btree block when reflinking
	scsi: sg: check length passed to SG_NEXT_CMD_LEN
	scsi: libsas: fix ata xfer length
	scsi: scsi_dh_alua: Check scsi_device_get() return value
	scsi: scsi_dh_alua: Ensure that alua_activate() calls the completion function
	PCI: iproc: Save host bridge window resource in struct iproc_pcie
	ALSA: seq: Fix race during FIFO resize
	ALSA: hda - fix a problem for lineout on a Dell AIO machine
	ASoC: atmel-classd: fix audio clock rate
	ASoC: Intel: Skylake: fix invalid memory access due to wrong reference of pointer
	HID: wacom: Don't add ghost interface as shared data
	mmc: sdhci: Disable runtime pm when the sdio_irq is enabled
	mmc: sdhci-of-at91: fix MMC_DDR_52 timing selection
	NFSv4.1 fix infinite loop on IO BAD_STATEID error
	nfsd: map the ENOKEY to nfserr_perm for avoiding warning
	parisc: Clean up fixup routines for get_user()/put_user()
	parisc: Avoid stalled CPU warnings after system shutdown
	parisc: Fix access fault handling in pa_memcpy()
	ACPI: Fix incompatibility with mcount-based function graph tracing
	ACPI: Do not create a platform_device for IOAPIC/IOxAPIC
	tty/serial: atmel: fix race condition (TX+DMA)
	tty/serial: atmel: fix TX path in atmel_console_write()
	USB: fix linked-list corruption in rh_call_control()
	serial: mxs-auart: Fix baudrate calculation
	KVM: x86: clear bus pointer when destroyed
	KVM: kvm_io_bus_unregister_dev() should never fail
	drm/radeon: Override fpfn for all VRAM placements in radeon_evict_flags
	drm/vc4: Allocate the right amount of space for boot-time CRTC state.
	drm/etnaviv: (re-)protect fence allocation with GPU mutex
	x86/mm/KASLR: Exclude EFI region from KASLR VA space randomization
	x86/mce: Fix copy/paste error in exception table entries
	lib/syscall: Clear return values when no stack
	mm: rmap: fix huge file mmap accounting in the memcg stats
	mm, hugetlb: use pte_present() instead of pmd_present() in follow_huge_pmd()
	ARM: BCM5301X: Add back handler ignoring external imprecise aborts
	qla2xxx: Allow vref count to timeout on vport delete.
	ARM: dts: BCM5301X: Correct GIC_PPI interrupt flags
	MIPS: Lantiq: Fix cascaded IRQ setup
	mm: workingset: fix premature shadow node shrinking with cgroups
	blk: improve order of bio handling in generic_make_request()
	blk: Ensure users for current->bio_list can see the full list.
	padata: avoid race in reordering
	nvme/core: Fix race kicking freed request_queue
	nvme/pci: Disable on removal when disconnected
	Linux 4.9.21

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
 2017-04-08 09:38:27 +02:00
Kees Cook 673dfb6d1b lib/syscall: Clear return values when no stack 
commit 854fbd6e5f60fe99e8e3a569865409fca378f143 upstream.

Commit:

  aa1f1a6396 ("lib/syscall: Pin the task stack in collect_syscall()")

... added logic to handle a process stack not existing, but left sp and pc
uninitialized, which can be later reported via /proc/$pid/syscall for zombie
processes, potentially exposing kernel memory to userspace.

  Zombie /proc/$pid/syscall before:
  -1 0xffffffff9a060100 0xffff92f42d6ad900

  Zombie /proc/$pid/syscall after:
  -1 0x0 0x0

Reported-by: Robert Święcki <robert@swiecki.net>
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Fixes: aa1f1a6396 ("lib/syscall: Pin the task stack in collect_syscall()")
Link: http://lkml.kernel.org/r/20170323224616.GA92694@beast
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2017-04-08 09:30:35 +02:00
Dmitry Shmidt cd08287396 Merge tag 'v4.9.6' into android-4.9 
This is the 4.9.6 stable release

Change-Id: I318df4b9d706d50c13fe3969d734117c25fc94bc
 2017-01-31 13:55:27 -08:00
Matt Wagantall 345eb978a6 ANDROID: sched/rt: Add Kconfig option to enable panicking for RT throttling 
This may be useful for detecting and debugging RT throttling issues.

Change-Id: I5807a897d11997d76421c1fcaa2918aad988c6c9
Signed-off-by: Matt Wagantall <mattw@codeaurora.org>
[rameezmustafa@codeaurora.org]: Port to msm-3.18]
Signed-off-by: Syed Rameez Mustafa <rameezmustafa@codeaurora.org>
[jstultz: forwardported to 4.4]
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Andres Oportus <andresoportus@google.com>
 2017-01-31 10:47:10 -08:00
Colin Cross aaf78ec6c8 ANDROID: hardlockup: detect hard lockups without NMIs using secondary cpus 
Emulate NMIs on systems where they are not available by using timer
interrupts on other cpus.  Each cpu will use its softlockup hrtimer
to check that the next cpu is processing hrtimer interrupts by
verifying that a counter is increasing.

This patch is useful on systems where the hardlockup detector is not
available due to a lack of NMIs, for example most ARM SoCs.
Without this patch any cpu stuck with interrupts disabled can
cause a hardware watchdog reset with no debugging information,
but with this patch the kernel can detect the lockup and panic,
which can result in useful debugging info.

Change-Id: Ia5faf50243e19c1755201212e04c8892d929785a
Signed-off-by: Colin Cross <ccross@android.com>
 2017-01-27 13:52:24 -08:00
Geert Uytterhoeven 41c6b3e898 swiotlb: Add swiotlb=noforce debug option 
commit fff5d99225107f5f13fe4a9805adc2a1c4b5fb00 upstream.

On architectures like arm64, swiotlb is tied intimately to the core
architecture DMA support. In addition, ZONE_DMA cannot be disabled.

To aid debugging and catch devices not supporting DMA to memory outside
the 32-bit address space, add a kernel command line option
"swiotlb=noforce", which disables the use of bounce buffers.
If specified, trying to map memory that cannot be used with DMA will
fail, and a rate-limited warning will be printed.

Note that io_tlb_nslabs is set to 1, which is the minimal supported
value.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2017-01-26 08:24:44 +01:00
Geert Uytterhoeven 1fd1e6cd63 swiotlb: Convert swiotlb_force from int to enum 
commit ae7871be189cb41184f1e05742b4a99e2c59774d upstream.

Convert the flag swiotlb_force from an int to an enum, to prepare for
the advent of more possible values.

Suggested-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2017-01-26 08:24:44 +01:00
Al Viro d06367ac17 fix a fencepost error in pipe_advance() 
commit b9dc6f65bc5e232d1c05fe34b5daadc7e8bbf1fb upstream.

The logics in pipe_advance() used to release all buffers past the new
position failed in cases when the number of buffers to release was equal
to pipe->buffers.  If that happened, none of them had been released,
leaving pipe full.  Worse, it was trivial to trigger and we end up with
pipe full of uninitialized pages.  IOW, it's an infoleak.

Reported-by: "Alan J. Wylie" <alan@wylie.me.uk>
Tested-by: "Alan J. Wylie" <alan@wylie.me.uk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2017-01-19 20:18:02 +01:00
Linus Torvalds 2b41226b39 Revert "radix tree test suite: fix compilation" 
This reverts commit 53855d10f4.

It shouldn't have come in yet - it depends on the changes in linux-next
that will come in during the next merge window.  As Matthew Wilcox says,
the test suite is broken with the current state without the revert.

Requested-by: Matthew Wilcox <mawilcox@microsoft.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2016-12-09 10:41:42 -08:00
Matthew Wilcox 53855d10f4 radix tree test suite: fix compilation 
Patch "lib/radix-tree: Convert to hotplug state machine" breaks the test
suite as it adds a call to cpuhp_setup_state_nocalls() which is not
currently emulated in the test suite.  Add it, and delete the emulation
of the old CPU hotplug mechanism.

Link: http://lkml.kernel.org/r/1480369871-5271-36-git-send-email-mawilcox@linuxonhyperv.com
Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Tested-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Konstantin Khlebnikov <koct9i@gmail.com>
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: Matthew Wilcox <mawilcox@microsoft.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2016-12-07 17:10:00 -08:00
Linus Torvalds 5b43f97f3f Merge branch 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 
Pull locking fixes from Ingo Molnar:
 "Two rtmutex race fixes (which miraculously never triggered, that we
  know of), plus two lockdep printk formatting regression fixes"

* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  lockdep: Fix report formatting
  locking/rtmutex: Use READ_ONCE() in rt_mutex_owner()
  locking/rtmutex: Prevent dequeue vs. unlock race
  locking/selftest: Fix output since KERN_CONT changes
 2016-12-07 11:27:33 -08:00
Dmitry Vyukov 828347f8f9 kasan: support use-after-scope detection 
Gcc revision 241896 implements use-after-scope detection.  Will be
available in gcc 7.  Support it in KASAN.

Gcc emits 2 new callbacks to poison/unpoison large stack objects when
they go in/out of scope.  Implement the callbacks and add a test.

[dvyukov@google.com: v3]
  Link: http://lkml.kernel.org/r/1479998292-144502-1-git-send-email-dvyukov@google.com
Link: http://lkml.kernel.org/r/1479226045-145148-1-git-send-email-dvyukov@google.com
Signed-off-by: Dmitry Vyukov <dvyukov@google.com>
Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: <stable@vger.kernel.org>	[4.0+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2016-11-30 16:32:52 -08:00
Chris Wilson f8ff04e2be lib/debugobjects: export for use in modules 
Drivers, or other modules, that use a mixture of objects (especially
objects embedded within other objects) would like to take advantage of
the debugobjects facilities to help catch misuse.  Currently, the
debugobjects interface is only available to builtin drivers and requires
a set of EXPORT_SYMBOL_GPL for use by modules.

I am using the debugobjects in i915.ko to try and catch some invalid
operations on embedded objects.  The problem currently only presents
itself across module unload so forcing i915 to be builtin is not an
option.

Link: http://lkml.kernel.org/r/20161122143039.6433-1-chris@chris-wilson.co.uk
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: "Du, Changbin" <changbin.du@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2016-11-30 16:32:52 -08:00
Michael Ellerman 2513940989 locking/selftest: Fix output since KERN_CONT changes 
Since the KERN_CONT changes the locking-selftest output is messed up, eg:

  ----------------------------------------------------------------------------
                                   | spin |wlock |rlock |mutex | wsem | rsem |
    --------------------------------------------------------------------------
                       A-A deadlock:
    ok  |
    ok  |
    ok  |
    ok  |
    ok  |
    ok  |

Use pr_cont() to get it looking normal again:

  ----------------------------------------------------------------------------
                                   | spin |wlock |rlock |mutex | wsem | rsem |
    --------------------------------------------------------------------------
                       A-A deadlock:  ok  |  ok  |  ok  |  ok  |  ok  |  ok  |

Reported-by: Christian Kujau <lists@nerdbynature.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linuxppc-dev@ozlabs.org
Link: http://lkml.kernel.org/r/1480027528-934-1-git-send-email-mpe@ellerman.id.au
Signed-off-by: Ingo Molnar <mingo@kernel.org>
 2016-11-25 07:12:19 +01:00
Andrey Ryabinin f5527fffff mpi: Fix NULL ptr dereference in mpi_powm() [ver #3] 
This fixes CVE-2016-8650.

If mpi_powm() is given a zero exponent, it wants to immediately return
either 1 or 0, depending on the modulus.  However, if the result was
initalised with zero limb space, no limbs space is allocated and a
NULL-pointer exception ensues.

Fix this by allocating a minimal amount of limb space for the result when
the 0-exponent case when the result is 1 and not touching the limb space
when the result is 0.

This affects the use of RSA keys and X.509 certificates that carry them.

BUG: unable to handle kernel NULL pointer dereference at           (null)
IP: [<ffffffff8138ce5d>] mpi_powm+0x32/0x7e6
PGD 0
Oops: 0002 [#1] SMP
Modules linked in:
CPU: 3 PID: 3014 Comm: keyctl Not tainted 4.9.0-rc6-fscache+ #278
Hardware name: ASUS All Series/H97-PLUS, BIOS 2306 10/09/2014
task: ffff8804011944c0 task.stack: ffff880401294000
RIP: 0010:[<ffffffff8138ce5d>]  [<ffffffff8138ce5d>] mpi_powm+0x32/0x7e6
RSP: 0018:ffff880401297ad8  EFLAGS: 00010212
RAX: 0000000000000000 RBX: ffff88040868bec0 RCX: ffff88040868bba0
RDX: ffff88040868b260 RSI: ffff88040868bec0 RDI: ffff88040868bee0
RBP: ffff880401297ba8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000047 R11: ffffffff8183b210 R12: 0000000000000000
R13: ffff8804087c7600 R14: 000000000000001f R15: ffff880401297c50
FS:  00007f7a7918c700(0000) GS:ffff88041fb80000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000401250000 CR4: 00000000001406e0
Stack:
 ffff88040868bec0 0000000000000020 ffff880401297b00 ffffffff81376cd4
 0000000000000100 ffff880401297b10 ffffffff81376d12 ffff880401297b30
 ffffffff81376f37 0000000000000100 0000000000000000 ffff880401297ba8
Call Trace:
 [<ffffffff81376cd4>] ? __sg_page_iter_next+0x43/0x66
 [<ffffffff81376d12>] ? sg_miter_get_next_page+0x1b/0x5d
 [<ffffffff81376f37>] ? sg_miter_next+0x17/0xbd
 [<ffffffff8138ba3a>] ? mpi_read_raw_from_sgl+0xf2/0x146
 [<ffffffff8132a95c>] rsa_verify+0x9d/0xee
 [<ffffffff8132acca>] ? pkcs1pad_sg_set_buf+0x2e/0xbb
 [<ffffffff8132af40>] pkcs1pad_verify+0xc0/0xe1
 [<ffffffff8133cb5e>] public_key_verify_signature+0x1b0/0x228
 [<ffffffff8133d974>] x509_check_for_self_signed+0xa1/0xc4
 [<ffffffff8133cdde>] x509_cert_parse+0x167/0x1a1
 [<ffffffff8133d609>] x509_key_preparse+0x21/0x1a1
 [<ffffffff8133c3d7>] asymmetric_key_preparse+0x34/0x61
 [<ffffffff812fc9f3>] key_create_or_update+0x145/0x399
 [<ffffffff812fe227>] SyS_add_key+0x154/0x19e
 [<ffffffff81001c2b>] do_syscall_64+0x80/0x191
 [<ffffffff816825e4>] entry_SYSCALL64_slow_path+0x25/0x25
Code: 56 41 55 41 54 53 48 81 ec a8 00 00 00 44 8b 71 04 8b 42 04 4c 8b 67 18 45 85 f6 89 45 80 0f 84 b4 06 00 00 85 c0 75 2f 41 ff ce <49> c7 04 24 01 00 00 00 b0 01 75 0b 48 8b 41 18 48 83 38 01 0f
RIP  [<ffffffff8138ce5d>] mpi_powm+0x32/0x7e6
 RSP <ffff880401297ad8>
CR2: 0000000000000000
---[ end trace d82015255d4a5d8d ]---

Basically, this is a backport of a libgcrypt patch:

	http://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=patch;h=6e1adb05d290aeeb1c230c763970695f4a538526

Fixes: cdec9cb516 ("crypto: GnuPG based MPI lib - source files (part 1)")
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Dmitry Kasatkin <dmitry.kasatkin@gmail.com>
cc: linux-ima-devel@lists.sourceforge.net
cc: stable@vger.kernel.org
Signed-off-by: James Morris <james.l.morris@oracle.com>
 2016-11-25 12:57:50 +11:00
Linus Torvalds 8d1a2408ef Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc 
Pull sparc fixes from David Miller:

 1) With modern networking cards we can run out of 32-bit DMA space, so
    support 64-bit DMA addressing when possible on sparc64. From Dave
    Tushar.

 2) Some signal frame validation checks are inverted on sparc32, fix
    from Andreas Larsson.

 3) Lockdep tables can get too large in some circumstances on sparc64,
    add a way to adjust the size a bit. From Babu Moger.

 4) Fix NUMA node probing on some sun4v systems, from Thomas Tai.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
  sparc: drop duplicate header scatterlist.h
  lockdep: Limit static allocations if PROVE_LOCKING_SMALL is defined
  config: Adding the new config parameter CONFIG_PROVE_LOCKING_SMALL for sparc
  sunbmac: Fix compiler warning
  sunqe: Fix compiler warnings
  sparc64: Enable 64-bit DMA
  sparc64: Enable sun4v dma ops to use IOMMU v2 APIs
  sparc64: Bind PCIe devices to use IOMMU v2 service
  sparc64: Initialize iommu_map_table and iommu_pool
  sparc64: Add ATU (new IOMMU) support
  sparc64: Add FORCE_MAX_ZONEORDER and default to 13
  sparc64: fix compile warning section mismatch in find_node()
  sparc32: Fix inverted invalid_frame_pointer checks on sigreturns
  sparc64: Fix find_node warning if numa node cannot be found
 2016-11-21 13:56:17 -08:00
Babu Moger e6b5f1be7a config: Adding the new config parameter CONFIG_PROVE_LOCKING_SMALL for sparc 
This new config parameter limits the space used for "Lock debugging:
prove locking correctness" by about 4MB. The current sparc systems have
the limitation of 32MB size for kernel size including .text, .data and
.bss sections. With PROVE_LOCKING feature, the kernel size could grow
beyond this limit and causing system boot-up issues. With this option,
kernel limits the size of the entries of lock_chains, stack_trace etc.,
so that kernel fits in required size limit. This is not visible to user
and only used for sparc.

Signed-off-by: Babu Moger <babu.moger@oracle.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2016-11-18 11:33:19 -08:00
Abhi Das 680bb946a1 fix iov_iter_advance() for ITER_PIPE 
iov_iter_advance() needs to decrement iter->count by the number of
bytes we'd moved beyond.  Normal flavours do that, but ITER_PIPE
doesn't and ITER_PIPE generic_file_read_iter() for O_DIRECT files
ends up with a bogus fallback to page cache read, resulting in incorrect
values for file offset and bytes read.

Signed-off-by: Abhi Das <adas@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
 2016-11-17 00:00:48 -05:00
Chris Wilson ae65a21fb8 lib/stackdepot: export save/fetch stack for drivers 
Some drivers would like to record stacktraces in order to aide leak
tracing.  As stackdepot already provides a facility for only storing the
unique traces, thereby reducing the memory required, export that
functionality for use by drivers.

The code was originally created for KASAN and moved under lib in commit
cd11016e5f ("mm, kasan: stackdepot implementation.  Enable stackdepot
for SLAB") so that it could be shared with mm/.  In turn, we want to
share it now with drivers.

Link: http://lkml.kernel.org/r/20161108133209.22704-1-chris@chris-wilson.co.uk
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: "Kirill A. Shutemov" <kirill@shutemov.name>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2016-11-11 08:12:37 -08:00
Linus Torvalds 2a26d99b25 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 
Pull networking fixes from David Miller:
 "Lots of fixes, mostly drivers as is usually the case.

   1) Don't treat zero DMA address as invalid in vmxnet3, from Alexey
      Khoroshilov.

   2) Fix element timeouts in netfilter's nft_dynset, from Anders K.
      Pedersen.

   3) Don't put aead_req crypto struct on the stack in mac80211, from
      Ard Biesheuvel.

   4) Several uninitialized variable warning fixes from Arnd Bergmann.

   5) Fix memory leak in cxgb4, from Colin Ian King.

   6) Fix bpf handling of VLAN header push/pop, from Daniel Borkmann.

   7) Several VRF semantic fixes from David Ahern.

   8) Set skb->protocol properly in ip6_tnl_xmit(), from Eli Cooper.

   9) Socket needs to be locked in udp_disconnect(), from Eric Dumazet.

  10) Div-by-zero on 32-bit fix in mlx4 driver, from Eugenia Emantayev.

  11) Fix stale link state during failover in NCSCI driver, from Gavin
      Shan.

  12) Fix netdev lower adjacency list traversal, from Ido Schimmel.

  13) Propvide proper handle when emitting notifications of filter
      deletes, from Jamal Hadi Salim.

  14) Memory leaks and big-endian issues in rtl8xxxu, from Jes Sorensen.

  15) Fix DESYNC_FACTOR handling in ipv6, from Jiri Bohac.

  16) Several routing offload fixes in mlxsw driver, from Jiri Pirko.

  17) Fix broadcast sync problem in TIPC, from Jon Paul Maloy.

  18) Validate chunk len before using it in SCTP, from Marcelo Ricardo
      Leitner.

  19) Revert a netns locking change that causes regressions, from Paul
      Moore.

  20) Add recursion limit to GRO handling, from Sabrina Dubroca.

  21) GFP_KERNEL in irq context fix in ibmvnic, from Thomas Falcon.

  22) Avoid accessing stale vxlan/geneve socket in data path, from
      Pravin Shelar"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (189 commits)
  geneve: avoid using stale geneve socket.
  vxlan: avoid using stale vxlan socket.
  qede: Fix out-of-bound fastpath memory access
  net: phy: dp83848: add dp83822 PHY support
  enic: fix rq disable
  tipc: fix broadcast link synchronization problem
  ibmvnic: Fix missing brackets in init_sub_crq_irqs
  ibmvnic: Fix releasing of sub-CRQ IRQs in interrupt context
  Revert "ibmvnic: Fix releasing of sub-CRQ IRQs in interrupt context"
  arch/powerpc: Update parameters for csum_tcpudp_magic & csum_tcpudp_nofold
  net/mlx4_en: Save slave ethtool stats command
  net/mlx4_en: Fix potential deadlock in port statistics flow
  net/mlx4: Fix firmware command timeout during interrupt test
  net/mlx4_core: Do not access comm channel if it has not yet been initialized
  net/mlx4_en: Fix panic during reboot
  net/mlx4_en: Process all completions in RX rings after port goes up
  net/mlx4_en: Resolve dividing by zero in 32-bit system
  net/mlx4_core: Change the default value of enable_qos
  net/mlx4_core: Avoid setting ports to auto when only one port type is supported
  net/mlx4_core: Fix the resource-type enum in res tracker to conform to FW spec
  ...
 2016-10-29 20:33:20 -07:00
Daniel Mentz 62e931fac4 lib/genalloc.c: start search from start of chunk 
gen_pool_alloc_algo() iterates over the chunks of a pool trying to find
a contiguous block of memory that satisfies the allocation request.

The shortcut

	if (size > atomic_read(&chunk->avail))
		continue;

makes the loop skip over chunks that do not have enough bytes left to
fulfill the request.  There are two situations, though, where an
allocation might still fail:

(1) The available memory is not contiguous, i.e.  the request cannot
    be fulfilled due to external fragmentation.

(2) A race condition.  Another thread runs the same code concurrently
    and is quicker to grab the available memory.

In those situations, the loop calls pool->algo() to search the entire
chunk, and pool->algo() returns some value that is >= end_bit to
indicate that the search failed.  This return value is then assigned to
start_bit.  The variables start_bit and end_bit describe the range that
should be searched, and this range should be reset for every chunk that
is searched.  Today, the code fails to reset start_bit to 0.  As a
result, prefixes of subsequent chunks are ignored.  Memory allocations
might fail even though there is plenty of room left in these prefixes of
those other chunks.

Fixes: 7f184275aa ("lib, Make gen_pool memory allocator lockless")
Link: http://lkml.kernel.org/r/1477420604-28918-1-git-send-email-danielmentz@google.com
Signed-off-by: Daniel Mentz <danielmentz@google.com>
Reviewed-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2016-10-27 18:43:43 -07:00
Dmitry Vyukov 02754e0a48 lib/stackdepot.c: bump stackdepot capacity from 16MB to 128MB 
KASAN uses stackdepot to memorize stacks for all kmalloc/kfree calls.
Current stackdepot capacity is 16MB (1024 top level entries x 4 pages on
second level).  Size of each stack is (num_frames + 3) * sizeof(long).
Which gives us ~84K stacks.  This capacity was chosen empirically and it
is enough to run kernel normally.

However, when lots of configs are enabled and a fuzzer tries to maximize
code coverage, it easily hits the limit within tens of minutes.  I've
tested for long a time with number of top level entries bumped 4x
(4096).  And I think I've seen overflow only once.  But I don't have all
configs enabled and code coverage has not reached maximum yet.  So bump
it 8x to 8192.

Since we have two-level table, memory cost of this is very moderate --
currently the top-level table is 8KB, with this patch it is 64KB, which
is negligible under KASAN.

Here is some approx math.

128MB allows us to memorize ~670K stacks (assuming stack is ~200b).
I've grepped kernel for kmalloc|kfree|kmem_cache_alloc|kmem_cache_free|
kzalloc|kstrdup|kstrndup|kmemdup and it gives ~60K matches.  Most of
alloc/free call sites are reachable with only one stack.  But some
utility functions can have large fanout.  Assuming average fanout is 5x,
total number of alloc/free stacks is ~300K.

Link: http://lkml.kernel.org/r/1476458416-122131-1-git-send-email-dvyukov@google.com
Signed-off-by: Dmitry Vyukov <dvyukov@google.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Baozeng Ding <sploving1@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2016-10-27 18:43:43 -07:00