ade06f42984b331d63dbbaeba8cc60f2d773db09
11030 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
 Greg Kroah-Hartman
|
033d019ce2 |
Merge 4.9.77 into android-4.9
Changes in 4.9.77 dm bufio: fix shrinker scans when (nr_to_scan < retain_target) mac80211: Add RX flag to indicate ICV stripped ath10k: rebuild crypto header in rx data frames KVM: Fix stack-out-of-bounds read in write_mmio can: gs_usb: fix return value of the "set_bittiming" callback IB/srpt: Disable RDMA access by the initiator MIPS: Validate PR_SET_FP_MODE prctl(2) requests against the ABI of the task MIPS: Factor out NT_PRFPREG regset access helpers MIPS: Guard against any partial write attempt with PTRACE_SETREGSET MIPS: Consistently handle buffer counter with PTRACE_SETREGSET MIPS: Fix an FCSR access API regression with NT_PRFPREG and MSA MIPS: Also verify sizeof `elf_fpreg_t' with PTRACE_SETREGSET MIPS: Disallow outsized PTRACE_SETREGSET NT_PRFPREG regset accesses kvm: vmx: Scrub hardware GPRs at VM-exit platform/x86: wmi: Call acpi_wmi_init() later x86/acpi: Handle SCI interrupts above legacy space gracefully ALSA: pcm: Remove incorrect snd_BUG_ON() usages ALSA: pcm: Add missing error checks in OSS emulation plugin builder ALSA: pcm: Abort properly at pending signal in OSS read/write loops ALSA: pcm: Allow aborting mutex lock at OSS read/write loops ALSA: aloop: Release cable upon open error path ALSA: aloop: Fix inconsistent format due to incomplete rule ALSA: aloop: Fix racy hw constraints adjustment x86/acpi: Reduce code duplication in mp_override_legacy_irq() zswap: don't param_set_charp while holding spinlock lan78xx: use skb_cow_head() to deal with cloned skbs sr9700: use skb_cow_head() to deal with cloned skbs smsc75xx: use skb_cow_head() to deal with cloned skbs cx82310_eth: use skb_cow_head() to deal with cloned skbs xhci: Fix ring leak in failure path of xhci_alloc_virt_device() 8021q: fix a memory leak for VLAN 0 device ip6_tunnel: disable dst caching if tunnel is dual-stack net: core: fix module type in sock_diag_bind RDS: Heap OOB write in rds_message_alloc_sgs() RDS: null pointer dereference in rds_atomic_free_op sh_eth: fix TSU resource handling sh_eth: fix SH7757 GEther initialization net: stmmac: enable EEE in MII, GMII or RGMII only ipv6: fix possible mem leaks in ipv6_make_skb() ethtool: do not print warning for applications using legacy API mlxsw: spectrum_router: Fix NULL pointer deref net/sched: Fix update of lastuse in act modules implementing stats_update crypto: algapi - fix NULL dereference in crypto_remove_spawns() rbd: set max_segments to USHRT_MAX x86/microcode/intel: Extend BDW late-loading with a revision check KVM: x86: Add memory barrier on vmcs field lookup drm/vmwgfx: Potential off by one in vmw_view_add() kaiser: Set _PAGE_NX only if supported iscsi-target: Make TASK_REASSIGN use proper se_cmd->cmd_kref target: Avoid early CMD_T_PRE_EXECUTE failures during ABORT_TASK bpf: move fixup_bpf_calls() function bpf: refactor fixup_bpf_calls() bpf: prevent out-of-bounds speculation bpf, array: fix overflow in max_entries and undefined behavior in index_mask USB: serial: cp210x: add IDs for LifeScan OneTouch Verio IQ USB: serial: cp210x: add new device ID ELV ALC 8xxx usb: misc: usb3503: make sure reset is low for at least 100us USB: fix usbmon BUG trigger usbip: remove kernel addresses from usb device and urb debug msgs usbip: fix vudc_rx: harden CMD_SUBMIT path to handle malicious input usbip: vudc_tx: fix v_send_ret_submit() vulnerability to null xfer buffer staging: android: ashmem: fix a race condition in ASHMEM_SET_SIZE ioctl Bluetooth: Prevent stack info leak from the EFS element. uas: ignore UAS for Norelsys NS1068(X) chips e1000e: Fix e1000_check_for_copper_link_ich8lan return value. x86/Documentation: Add PTI description x86/cpu: Factor out application of forced CPU caps x86/cpufeatures: Make CPU bugs sticky x86/cpufeatures: Add X86_BUG_CPU_INSECURE x86/pti: Rename BUG_CPU_INSECURE to BUG_CPU_MELTDOWN x86/cpufeatures: Add X86_BUG_SPECTRE_V[12] x86/cpu: Merge bugs.c and bugs_64.c sysfs/cpu: Add vulnerability folder x86/cpu: Implement CPU vulnerabilites sysfs functions x86/cpu/AMD: Make LFENCE a serializing instruction x86/cpu/AMD: Use LFENCE_RDTSC in preference to MFENCE_RDTSC sysfs/cpu: Fix typos in vulnerability documentation x86/alternatives: Fix optimize_nops() checking x86/alternatives: Add missing '\n' at end of ALTERNATIVE inline asm x86/mm/32: Move setup_clear_cpu_cap(X86_FEATURE_PCID) earlier objtool, modules: Discard objtool annotation sections for modules objtool: Detect jumps to retpoline thunks objtool: Allow alternatives to be ignored x86/asm: Use register variable to get stack pointer value x86/retpoline: Add initial retpoline support x86/spectre: Add boot time option to select Spectre v2 mitigation x86/retpoline/crypto: Convert crypto assembler indirect jumps x86/retpoline/entry: Convert entry assembler indirect jumps x86/retpoline/ftrace: Convert ftrace assembler indirect jumps x86/retpoline/hyperv: Convert assembler indirect jumps x86/retpoline/xen: Convert Xen hypercall indirect jumps x86/retpoline/checksum32: Convert assembler indirect jumps x86/retpoline/irq32: Convert assembler indirect jumps x86/retpoline: Fill return stack buffer on vmexit selftests/x86: Add test_vsyscall x86/retpoline: Remove compile time warning objtool: Fix retpoline support for pre-ORC objtool x86/pti/efi: broken conversion from efi to kernel page table Linux 4.9.77 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> |
||
 Dan Streetman
|
1ecdfc1ee9 |
zswap: don't param_set_charp while holding spinlock
commit fd5bb66cd934987e49557455b6497fc006521940 upstream.
Change the zpool/compressor param callback function to release the
zswap_pools_lock spinlock before calling param_set_charp, since that
function may sleep when it calls kmalloc with GFP_KERNEL.
While this problem has existed for a while, I wasn't able to trigger it
using a tight loop changing either/both the zpool and compressor params; I
think it's very unlikely to be an issue on the stable kernels, especially
since most zswap users will change the compressor and/or zpool from sysfs
only one time each boot - or zero times, if they add the params to the
kernel boot.
Fixes:
|
||
|
Greg Kroah-Hartman
|
bc7ff9b998 |
Merge 4.9.75 into android-4.9
Changes in 4.9.75 tcp_bbr: reset full pipe detection on loss recovery undo tcp_bbr: reset long-term bandwidth sampling on loss recovery undo x86/boot: Add early cmdline parsing for options with arguments KAISER: Kernel Address Isolation kaiser: merged update kaiser: do not set _PAGE_NX on pgd_none kaiser: stack map PAGE_SIZE at THREAD_SIZE-PAGE_SIZE kaiser: fix build and FIXME in alloc_ldt_struct() kaiser: KAISER depends on SMP kaiser: fix regs to do_nmi() ifndef CONFIG_KAISER kaiser: fix perf crashes kaiser: ENOMEM if kaiser_pagetable_walk() NULL kaiser: tidied up asm/kaiser.h somewhat kaiser: tidied up kaiser_add/remove_mapping slightly kaiser: align addition to x86/mm/Makefile kaiser: cleanups while trying for gold link kaiser: name that 0x1000 KAISER_SHADOW_PGD_OFFSET kaiser: delete KAISER_REAL_SWITCH option kaiser: vmstat show NR_KAISERTABLE as nr_overhead kaiser: enhanced by kernel and user PCIDs kaiser: load_new_mm_cr3() let SWITCH_USER_CR3 flush user kaiser: PCID 0 for kernel and 128 for user kaiser: x86_cr3_pcid_noflush and x86_cr3_pcid_user kaiser: paranoid_entry pass cr3 need to paranoid_exit kaiser: kaiser_remove_mapping() move along the pgd kaiser: fix unlikely error in alloc_ldt_struct() kaiser: add "nokaiser" boot option, using ALTERNATIVE x86/kaiser: Rename and simplify X86_FEATURE_KAISER handling x86/kaiser: Check boottime cmdline params kaiser: use ALTERNATIVE instead of x86_cr3_pcid_noflush kaiser: drop is_atomic arg to kaiser_pagetable_walk() kaiser: asm/tlbflush.h handle noPGE at lower level kaiser: kaiser_flush_tlb_on_return_to_user() check PCID x86/paravirt: Dont patch flush_tlb_single x86/kaiser: Reenable PARAVIRT kaiser: disabled on Xen PV x86/kaiser: Move feature detection up KPTI: Rename to PAGE_TABLE_ISOLATION KPTI: Report when enabled kaiser: Set _PAGE_NX only if supported Linux 4.9.75 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> |
||
 Hugh Dickins
|
1972bb9d92 |
kaiser: vmstat show NR_KAISERTABLE as nr_overhead
The kaiser update made an interesting choice, never to free any shadow page tables. Contention on global spinlock was worrying, particularly with it held across page table scans when freeing. Something had to be done: I was going to add refcounting; but simply never to free them is an appealing choice, minimizing contention without complicating the code (the more a page table is found already, the less the spinlock is used). But leaking pages in this way is also a worry: can we get away with it? At the very least, we need a count to show how bad it actually gets: in principle, one might end up wasting about 1/256 of memory that way (1/512 for when direct-mapped pages have to be user-mapped, plus 1/512 for when they are user-mapped from the vmalloc area on another occasion (but we don't have vmalloc'ed stacks, so only large ldts are vmalloc'ed). Add per-cpu stat NR_KAISERTABLE: including 256 at startup for the shared pgd entries, and 1 for each intermediate page table added thereafter for user-mapping - but leave out the 1 per mm, for its shadow pgd, because that distracts from the monotonic increase. Shown in /proc/vmstat as nr_overhead (0 if kaiser not enabled). In practice, it doesn't look so bad so far: more like 1/12000 after nine hours of gtests below; and movable pageblock segregation should tend to cluster the kaiser tables into a subset of the address space (if not, they will be bad for compaction too). But production may tell a different story: keep an eye on this number, and bring back lighter freeing if it gets out of control (maybe a shrinker). ["nr_overhead" should of course say "nr_kaisertable", if it needs to stay; but for the moment we are being coy, preferring that when Joe Blow notices a new line in his /proc/vmstat, he does not get too curious about what this "kaiser" stuff might be.] Signed-off-by: Hugh Dickins <hughd@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
 Colin Ian King
|
77b062e308 |
UPSTREAM: kasan: make get_wild_bug_type() static
The helper function get_wild_bug_type() does not need to be in global scope, so make it static. Cleans up sparse warning: "symbol 'get_wild_bug_type' was not declared. Should it be static?" Link: http://lkml.kernel.org/r/20170622090049.10658-1-colin.king@canonical.com Signed-off-by: Colin Ian King <colin.king@canonical.com> Acked-by: Dmitry Vyukov <dvyukov@google.com> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Alexander Potapenko <glider@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Bug: 64145065 (cherry-picked from 822d5ec25884b4e4436c819d03035fc0dd689309) Change-Id: If89c8ba8ee3bdb0db7ecb67e773bfbf3179514f3 Signed-off-by: Paul Lawrence <paullawrence@google.com> |
||
 Andrey Konovalov
|
37070c19d5 |
UPSTREAM: kasan: separate report parts by empty lines
Makes the report easier to read. Link: http://lkml.kernel.org/r/20170302134851.101218-10-andreyknvl@google.com Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Acked-by: Dmitry Vyukov <dvyukov@google.com> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Alexander Potapenko <glider@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Bug: 64145065 (cherry-picked from b19385993623c1a18a686b6b271cd24d5aa96f52) Change-Id: I8cc010a73e257cb08c7a2537d7aabd3c9c2c8116 Signed-off-by: Paul Lawrence <paullawrence@google.com> |
||
|
Andrey Konovalov
|
bef4eb3c70 |
UPSTREAM: kasan: improve double-free report format
Changes double-free report header from BUG: Double free or freeing an invalid pointer Unexpected shadow byte: 0xFB to BUG: KASAN: double-free or invalid-free in kmalloc_oob_left+0xe5/0xef This makes a bug uniquely identifiable by the first report line. To account for removing of the unexpected shadow value, print shadow bytes at the end of the report as in reports for other kinds of bugs. Link: http://lkml.kernel.org/r/20170302134851.101218-9-andreyknvl@google.com Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Acked-by: Dmitry Vyukov <dvyukov@google.com> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Alexander Potapenko <glider@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Bug: 64145065 (cherry-picked from 5ab6d91ac998158d04f9563335aa5f1409eda971) Change-Id: I02dee92190216601d65866eb1c27f7381a22b0da Signed-off-by: Paul Lawrence <paullawrence@google.com> |
||
|
Andrey Konovalov
|
ba2d145e7f |
UPSTREAM: kasan: print page description after stacks
Moves page description after the stacks since it's less important. Link: http://lkml.kernel.org/r/20170302134851.101218-8-andreyknvl@google.com Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Acked-by: Dmitry Vyukov <dvyukov@google.com> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Alexander Potapenko <glider@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Bug: 64145065 (cherry-picked from 430a05f91d6051705a6ddbe207735ca62e39bb80) Change-Id: Ia20b7d6cf5602531072e9bd4fd478737f8623db1 Signed-off-by: Paul Lawrence <paullawrence@google.com> |
||
|
Andrey Konovalov
|
c13ce42db1 |
UPSTREAM: kasan: improve slab object description
Changes slab object description from: Object at ffff880068388540, in cache kmalloc-128 size: 128 to: The buggy address belongs to the object at ffff880068388540 which belongs to the cache kmalloc-128 of size 128 The buggy address is located 123 bytes inside of 128-byte region [ffff880068388540, ffff8800683885c0) Makes it more explanatory and adds information about relative offset of the accessed address to the start of the object. Link: http://lkml.kernel.org/r/20170302134851.101218-7-andreyknvl@google.com Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Acked-by: Dmitry Vyukov <dvyukov@google.com> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Alexander Potapenko <glider@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Bug: 64145065 (cherry-picked from 0c06f1f86c87b1eb93420effe0c0457b30911360) Change-Id: I23928984dbe5a614b84c57e42b20ec13e7c739a4 Signed-off-by: Paul Lawrence <paullawrence@google.com> |
||
|
Andrey Konovalov
|
5e2a115893 |
UPSTREAM: kasan: change report header
Change report header format from: BUG: KASAN: use-after-free in unwind_get_return_address+0x28a/0x2c0 at addr ffff880069437950 Read of size 8 by task insmod/3925 to: BUG: KASAN: use-after-free in unwind_get_return_address+0x28a/0x2c0 Read of size 8 at addr ffff880069437950 by task insmod/3925 The exact access address is not usually important, so move it to the second line. This also makes the header look visually balanced. Link: http://lkml.kernel.org/r/20170302134851.101218-6-andreyknvl@google.com Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Acked-by: Dmitry Vyukov <dvyukov@google.com> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Alexander Potapenko <glider@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Bug: 64145065 (cherry-picked from 7f0a84c23b1dede3e76a7b2ebbde45a506252005) Change-Id: If9cacce637c317538d813b05ef2647707300d310 Signed-off-by: Paul Lawrence <paullawrence@google.com> |
||
|
Andrey Konovalov
|
74f1d22f17 |
UPSTREAM: kasan: simplify address description logic
Simplify logic for describing a memory address. Add addr_to_page() helper function. Makes the code easier to follow. Link: http://lkml.kernel.org/r/20170302134851.101218-5-andreyknvl@google.com Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Acked-by: Dmitry Vyukov <dvyukov@google.com> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Alexander Potapenko <glider@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Bug: 64145065 (cherry-picked from db429f16e0b472292000fd53b63ebd7221a9856e) Change-Id: Ie688a8fe0da5d1012e64bdbd26b5e7cb2ed43ff8 Signed-off-by: Paul Lawrence <paullawrence@google.com> |
||
|
Andrey Konovalov
|
9592c76d84 |
UPSTREAM: kasan: change allocation and freeing stack traces headers
Change stack traces headers from: Allocated: PID = 42 to: Allocated by task 42: Makes the report one line shorter and look better. Link: http://lkml.kernel.org/r/20170302134851.101218-4-andreyknvl@google.com Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Acked-by: Dmitry Vyukov <dvyukov@google.com> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Alexander Potapenko <glider@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Bug: 64145065 (cherry-picked from b6b72f4919c121bee5890732e0b8de2ab99c8dbc) Change-Id: Iab66777f16016b5a3a8ce85f7cc62d4572fcf5b0 Signed-off-by: Paul Lawrence <paullawrence@google.com> |
||
|
Andrey Konovalov
|
00c37f35d4 |
UPSTREAM: kasan: unify report headers
Unify KASAN report header format for different kinds of bad memory accesses. Makes the code simpler. Link: http://lkml.kernel.org/r/20170302134851.101218-3-andreyknvl@google.com Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Acked-by: Dmitry Vyukov <dvyukov@google.com> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Alexander Potapenko <glider@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Bug: 64145065 (cherry-picked from 7d418f7b0d3407b93ec70f3b380cc5beafa1fa68) Change-Id: I81577ad4617e8c4624fc0701f45a197d211f12a6 Signed-off-by: Paul Lawrence <paullawrence@google.com> |
||
|
Andrey Konovalov
|
828a17c94a |
UPSTREAM: kasan: introduce helper functions for determining bug type
Patch series "kasan: improve error reports", v2. This patchset improves KASAN reports by making them easier to read and a little more detailed. Also improves mm/kasan/report.c readability. Effectively changes a use-after-free report to: ================================================================== BUG: KASAN: use-after-free in kmalloc_uaf+0xaa/0xb6 [test_kasan] Write of size 1 at addr ffff88006aa59da8 by task insmod/3951 CPU: 1 PID: 3951 Comm: insmod Tainted: G B 4.10.0+ #84 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 Call Trace: dump_stack+0x292/0x398 print_address_description+0x73/0x280 kasan_report.part.2+0x207/0x2f0 __asan_report_store1_noabort+0x2c/0x30 kmalloc_uaf+0xaa/0xb6 [test_kasan] kmalloc_tests_init+0x4f/0xa48 [test_kasan] do_one_initcall+0xf3/0x390 do_init_module+0x215/0x5d0 load_module+0x54de/0x82b0 SYSC_init_module+0x3be/0x430 SyS_init_module+0x9/0x10 entry_SYSCALL_64_fastpath+0x1f/0xc2 RIP: 0033:0x7f22cfd0b9da RSP: 002b:00007ffe69118a78 EFLAGS: 00000206 ORIG_RAX: 00000000000000af RAX: ffffffffffffffda RBX: 0000555671242090 RCX: 00007f22cfd0b9da RDX: 00007f22cffcaf88 RSI: 000000000004df7e RDI: 00007f22d0399000 RBP: 00007f22cffcaf88 R08: 0000000000000003 R09: 0000000000000000 R10: 00007f22cfd07d0a R11: 0000000000000206 R12: 0000555671243190 R13: 000000000001fe81 R14: 0000000000000000 R15: 0000000000000004 Allocated by task 3951: save_stack_trace+0x16/0x20 save_stack+0x43/0xd0 kasan_kmalloc+0xad/0xe0 kmem_cache_alloc_trace+0x82/0x270 kmalloc_uaf+0x56/0xb6 [test_kasan] kmalloc_tests_init+0x4f/0xa48 [test_kasan] do_one_initcall+0xf3/0x390 do_init_module+0x215/0x5d0 load_module+0x54de/0x82b0 SYSC_init_module+0x3be/0x430 SyS_init_module+0x9/0x10 entry_SYSCALL_64_fastpath+0x1f/0xc2 Freed by task 3951: save_stack_trace+0x16/0x20 save_stack+0x43/0xd0 kasan_slab_free+0x72/0xc0 kfree+0xe8/0x2b0 kmalloc_uaf+0x85/0xb6 [test_kasan] kmalloc_tests_init+0x4f/0xa48 [test_kasan] do_one_initcall+0xf3/0x390 do_init_module+0x215/0x5d0 load_module+0x54de/0x82b0 SYSC_init_module+0x3be/0x430 SyS_init_module+0x9/0x10 entry_SYSCALL_64_fastpath+0x1f/0xc The buggy address belongs to the object at ffff88006aa59da0 which belongs to the cache kmalloc-16 of size 16 The buggy address is located 8 bytes inside of 16-byte region [ffff88006aa59da0, ffff88006aa59db0) The buggy address belongs to the page: page:ffffea0001aa9640 count:1 mapcount:0 mapping: (null) index:0x0 flags: 0x100000000000100(slab) raw: 0100000000000100 0000000000000000 0000000000000000 0000000180800080 raw: ffffea0001abe380 0000000700000007 ffff88006c401b40 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff88006aa59c80: 00 00 fc fc 00 00 fc fc 00 00 fc fc 00 00 fc fc ffff88006aa59d00: 00 00 fc fc 00 00 fc fc 00 00 fc fc 00 00 fc fc >ffff88006aa59d80: fb fb fc fc fb fb fc fc fb fb fc fc fb fb fc fc ^ ffff88006aa59e00: fb fb fc fc fb fb fc fc fb fb fc fc fb fb fc fc ffff88006aa59e80: fb fb fc fc 00 00 fc fc 00 00 fc fc 00 00 fc fc ================================================================== from: ================================================================== BUG: KASAN: use-after-free in kmalloc_uaf+0xaa/0xb6 [test_kasan] at addr ffff88006c4dcb28 Write of size 1 by task insmod/3984 CPU: 1 PID: 3984 Comm: insmod Tainted: G B 4.10.0+ #83 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 Call Trace: dump_stack+0x292/0x398 kasan_object_err+0x1c/0x70 kasan_report.part.1+0x20e/0x4e0 __asan_report_store1_noabort+0x2c/0x30 kmalloc_uaf+0xaa/0xb6 [test_kasan] kmalloc_tests_init+0x4f/0xa48 [test_kasan] do_one_initcall+0xf3/0x390 do_init_module+0x215/0x5d0 load_module+0x54de/0x82b0 SYSC_init_module+0x3be/0x430 SyS_init_module+0x9/0x10 entry_SYSCALL_64_fastpath+0x1f/0xc2 RIP: 0033:0x7feca0f779da RSP: 002b:00007ffdfeae5218 EFLAGS: 00000206 ORIG_RAX: 00000000000000af RAX: ffffffffffffffda RBX: 000055a064c13090 RCX: 00007feca0f779da RDX: 00007feca1236f88 RSI: 000000000004df7e RDI: 00007feca1605000 RBP: 00007feca1236f88 R08: 0000000000000003 R09: 0000000000000000 R10: 00007feca0f73d0a R11: 0000000000000206 R12: 000055a064c14190 R13: 000000000001fe81 R14: 0000000000000000 R15: 0000000000000004 Object at ffff88006c4dcb20, in cache kmalloc-16 size: 16 Allocated: PID = 3984 save_stack_trace+0x16/0x20 save_stack+0x43/0xd0 kasan_kmalloc+0xad/0xe0 kmem_cache_alloc_trace+0x82/0x270 kmalloc_uaf+0x56/0xb6 [test_kasan] kmalloc_tests_init+0x4f/0xa48 [test_kasan] do_one_initcall+0xf3/0x390 do_init_module+0x215/0x5d0 load_module+0x54de/0x82b0 SYSC_init_module+0x3be/0x430 SyS_init_module+0x9/0x10 entry_SYSCALL_64_fastpath+0x1f/0xc2 Freed: PID = 3984 save_stack_trace+0x16/0x20 save_stack+0x43/0xd0 kasan_slab_free+0x73/0xc0 kfree+0xe8/0x2b0 kmalloc_uaf+0x85/0xb6 [test_kasan] kmalloc_tests_init+0x4f/0xa48 [test_kasan] do_one_initcall+0xf3/0x390 do_init_module+0x215/0x5d0 load_module+0x54de/0x82b0 SYSC_init_module+0x3be/0x430 SyS_init_module+0x9/0x10 entry_SYSCALL_64_fastpath+0x1f/0xc2 Memory state around the buggy address: ffff88006c4dca00: fb fb fc fc fb fb fc fc fb fb fc fc fb fb fc fc ffff88006c4dca80: fb fb fc fc fb fb fc fc fb fb fc fc fb fb fc fc >ffff88006c4dcb00: fb fb fc fc fb fb fc fc fb fb fc fc fb fb fc fc ^ ffff88006c4dcb80: fb fb fc fc 00 00 fc fc fb fb fc fc fb fb fc fc ffff88006c4dcc00: fb fb fc fc fb fb fc fc fb fb fc fc fb fb fc fc ================================================================== This patch (of 9): Introduce get_shadow_bug_type() function, which determines bug type based on the shadow value for a particular kernel address. Introduce get_wild_bug_type() function, which determines bug type for addresses which don't have a corresponding shadow value. Link: http://lkml.kernel.org/r/20170302134851.101218-2-andreyknvl@google.com Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Acked-by: Dmitry Vyukov <dvyukov@google.com> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Alexander Potapenko <glider@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Bug: 64145065 (cherry-picked from 5e82cd120382ad7bbcc82298e34a034538b4384c) Change-Id: I3359775858891c9c66d11d2a520831e329993ae9 Signed-off-by: Paul Lawrence <paullawrence@google.com> |
||
 Mark Rutland
|
586b2bdb27 |
BACKPORT: kasan: report only the first error by default
Disable kasan after the first report. There are several reasons for this: - Single bug quite often has multiple invalid memory accesses causing storm in the dmesg. - Write OOB access might corrupt metadata so the next report will print bogus alloc/free stacktraces. - Reports after the first easily could be not bugs by itself but just side effects of the first one. Given that multiple reports usually only do harm, it makes sense to disable kasan after the first one. If user wants to see all the reports, the boot-time parameter kasan_multi_shot must be used. [aryabinin@virtuozzo.com: wrote changelog and doc, added missing include] Link: http://lkml.kernel.org/r/20170323154416.30257-1-aryabinin@virtuozzo.com Signed-off-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Andrey Konovalov <andreyknvl@google.com> Cc: Alexander Potapenko <glider@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Bug: 64145065 (cherry-picked from b0845ce58379d11dcad4cdb6824a6410de260216) Change-Id: Ia8c6d40dd0d4f5b944bf3501c08d7a825070b116 Signed-off-by: Paul Lawrence <paullawrence@google.com> |
||
 Dmitry Vyukov
|
e9166aa87b |
UPSTREAM: kasan: fix races in quarantine_remove_cache()
quarantine_remove_cache() frees all pending objects that belong to the cache, before we destroy the cache itself. However there are currently two possibilities how it can fail to do so. First, another thread can hold some of the objects from the cache in temp list in quarantine_put(). quarantine_put() has a windows of enabled interrupts, and on_each_cpu() in quarantine_remove_cache() can finish right in that window. These objects will be later freed into the destroyed cache. Then, quarantine_reduce() has the same problem. It grabs a batch of objects from the global quarantine, then unlocks quarantine_lock and then frees the batch. quarantine_remove_cache() can finish while some objects from the cache are still in the local to_free list in quarantine_reduce(). Fix the race with quarantine_put() by disabling interrupts for the whole duration of quarantine_put(). In combination with on_each_cpu() in quarantine_remove_cache() it ensures that quarantine_remove_cache() either sees the objects in the per-cpu list or in the global list. Fix the race with quarantine_reduce() by protecting quarantine_reduce() with srcu critical section and then doing synchronize_srcu() at the end of quarantine_remove_cache(). I've done some assessment of how good synchronize_srcu() works in this case. And on a 4 CPU VM I see that it blocks waiting for pending read critical sections in about 2-3% of cases. Which looks good to me. I suspect that these races are the root cause of some GPFs that I episodically hit. Previously I did not have any explanation for them. BUG: unable to handle kernel NULL pointer dereference at 00000000000000c8 IP: qlist_free_all+0x2e/0xc0 mm/kasan/quarantine.c:155 PGD 6aeea067 PUD 60ed7067 PMD 0 Oops: 0000 [#1] SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 0 PID: 13667 Comm: syz-executor2 Not tainted 4.10.0+ #60 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 task: ffff88005f948040 task.stack: ffff880069818000 RIP: 0010:qlist_free_all+0x2e/0xc0 mm/kasan/quarantine.c:155 RSP: 0018:ffff88006981f298 EFLAGS: 00010246 RAX: ffffea0000ffff00 RBX: 0000000000000000 RCX: ffffea0000ffff1f RDX: 0000000000000000 RSI: ffff88003fffc3e0 RDI: 0000000000000000 RBP: ffff88006981f2c0 R08: ffff88002fed7bd8 R09: 00000001001f000d R10: 00000000001f000d R11: ffff88006981f000 R12: ffff88003fffc3e0 R13: ffff88006981f2d0 R14: ffffffff81877fae R15: 0000000080000000 FS: 00007fb911a2d700(0000) GS:ffff88003ec00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000000000c8 CR3: 0000000060ed6000 CR4: 00000000000006f0 Call Trace: quarantine_reduce+0x10e/0x120 mm/kasan/quarantine.c:239 kasan_kmalloc+0xca/0xe0 mm/kasan/kasan.c:590 kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:544 slab_post_alloc_hook mm/slab.h:456 [inline] slab_alloc_node mm/slub.c:2718 [inline] kmem_cache_alloc_node+0x1d3/0x280 mm/slub.c:2754 __alloc_skb+0x10f/0x770 net/core/skbuff.c:219 alloc_skb include/linux/skbuff.h:932 [inline] _sctp_make_chunk+0x3b/0x260 net/sctp/sm_make_chunk.c:1388 sctp_make_data net/sctp/sm_make_chunk.c:1420 [inline] sctp_make_datafrag_empty+0x208/0x360 net/sctp/sm_make_chunk.c:746 sctp_datamsg_from_user+0x7e8/0x11d0 net/sctp/chunk.c:266 sctp_sendmsg+0x2611/0x3970 net/sctp/socket.c:1962 inet_sendmsg+0x164/0x5b0 net/ipv4/af_inet.c:761 sock_sendmsg_nosec net/socket.c:633 [inline] sock_sendmsg+0xca/0x110 net/socket.c:643 SYSC_sendto+0x660/0x810 net/socket.c:1685 SyS_sendto+0x40/0x50 net/socket.c:1653 I am not sure about backporting. The bug is quite hard to trigger, I've seen it few times during our massive continuous testing (however, it could be cause of some other episodic stray crashes as it leads to memory corruption...). If it is triggered, the consequences are very bad -- almost definite bad memory corruption. The fix is non trivial and has chances of introducing new bugs. I am also not sure how actively people use KASAN on older releases. [dvyukov@google.com: - sorted includes[ Link: http://lkml.kernel.org/r/20170309094028.51088-1-dvyukov@google.com Link: http://lkml.kernel.org/r/20170308151532.5070-1-dvyukov@google.com Signed-off-by: Dmitry Vyukov <dvyukov@google.com> Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Greg Thelen <gthelen@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Bug: 64145065 (cherry-picked from ce5bec54bb5debbbe51b40270d8f209a23cadae4) Change-Id: I9199861f005d7932c37397b3ae23a123a4cff89b Signed-off-by: Paul Lawrence <paullawrence@google.com> |
||
|
Dmitry Vyukov
|
650117f929 |
UPSTREAM: kasan: resched in quarantine_remove_cache()
We see reported stalls/lockups in quarantine_remove_cache() on machines with large amounts of RAM. quarantine_remove_cache() needs to scan whole quarantine in order to take out all objects belonging to the cache. Quarantine is currently 1/32-th of RAM, e.g. on a machine with 256GB of memory that will be 8GB. Moreover quarantine scanning is a walk over uncached linked list, which is slow. Add cond_resched() after scanning of each non-empty batch of objects. Batches are specifically kept of reasonable size for quarantine_put(). On a machine with 256GB of RAM we should have ~512 non-empty batches, each with 16MB of objects. Link: http://lkml.kernel.org/r/20170308154239.25440-1-dvyukov@google.com Signed-off-by: Dmitry Vyukov <dvyukov@google.com> Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Greg Thelen <gthelen@google.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Bug: 64145065 (cherry-picked from 68fd814a3391c7e017ae6ace8855788748edd981) Change-Id: I8a38466a9b9544bb303202c94bfba6201251e3f3 Signed-off-by: Paul Lawrence <paullawrence@google.com> |
||
 Ingo Molnar
|
46ae3e4faa |
UPSTREAM: kasan, sched/headers: Uninline kasan_enable/disable_current()
<linux/kasan.h> is a low level header that is included early in affected kernel headers. But it includes <linux/sched.h> which complicates the cleanup of sched.h dependencies. But kasan.h has almost no need for sched.h: its only use of scheduler functionality is in two inline functions which are not used very frequently - so uninline kasan_enable_current() and kasan_disable_current(). Also add a <linux/sched.h> dependency to a .c file that depended on kasan.h including it. This paves the way to remove the <linux/sched.h> include from kasan.h. Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org> Bug: 64145065 (cherry-picked from af8601ad420f6afa6445c927ad9f36d9700d96d6) Change-Id: I13fd2d3927f663d694ea0d5bf44f18e2c62ae013 Signed-off-by: Paul Lawrence <paullawrence@google.com> |
||
 Greg Thelen
|
cb61d5ab32 |
UPSTREAM: kasan: drain quarantine of memcg slab objects
Per memcg slab accounting and kasan have a problem with kmem_cache
destruction.
- kmem_cache_create() allocates a kmem_cache, which is used for
allocations from processes running in root (top) memcg.
- Processes running in non root memcg and allocating with either
__GFP_ACCOUNT or from a SLAB_ACCOUNT cache use a per memcg
kmem_cache.
- Kasan catches use-after-free by having kfree() and kmem_cache_free()
defer freeing of objects. Objects are placed in a quarantine.
- kmem_cache_destroy() destroys root and non root kmem_caches. It takes
care to drain the quarantine of objects from the root memcg's
kmem_cache, but ignores objects associated with non root memcg. This
causes leaks because quarantined per memcg objects refer to per memcg
kmem cache being destroyed.
To see the problem:
1) create a slab cache with kmem_cache_create(,,,SLAB_ACCOUNT,)
2) from non root memcg, allocate and free a few objects from cache
3) dispose of the cache with kmem_cache_destroy() kmem_cache_destroy()
will trigger a "Slab cache still has objects" warning indicating
that the per memcg kmem_cache structure was leaked.
Fix the leak by draining kasan quarantined objects allocated from non
root memcg.
Racing memcg deletion is tricky, but handled. kmem_cache_destroy() =>
shutdown_memcg_caches() => __shutdown_memcg_cache() => shutdown_cache()
flushes per memcg quarantined objects, even if that memcg has been
rmdir'd and gone through memcg_deactivate_kmem_caches().
This leak only affects destroyed SLAB_ACCOUNT kmem caches when kasan is
enabled. So I don't think it's worth patching stable kernels.
Link: http://lkml.kernel.org/r/1482257462-36948-1-git-send-email-gthelen@google.com
Signed-off-by: Greg Thelen <gthelen@google.com>
Reviewed-by: Vladimir Davydov <vdavydov.dev@gmail.com>
Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Bug: 64145065
(cherry-picked from f9fa1d919c696e90c887d8742198023e7639d139)
Change-Id: Ie054d9cde7fb1ce62e65776bff5a70f72925d037
Signed-off-by: Paul Lawrence <paullawrence@google.com>
|
||
|
Dmitry Vyukov
|
b0b36118b2 |
UPSTREAM: kasan: eliminate long stalls during quarantine reduction
Currently we dedicate 1/32 of RAM for quarantine and then reduce it by 1/4 of total quarantine size. This can be a significant amount of memory. For example, with 4GB of RAM total quarantine size is 128MB and it is reduced by 32MB at a time. With 128GB of RAM total quarantine size is 4GB and it is reduced by 1GB. This leads to several problems: - freeing 1GB can take tens of seconds, causes rcu stall warnings and just introduces unexpected long delays at random places - if kmalloc() is called under a mutex, other threads stall on that mutex while a thread reduces quarantine - threads wait on quarantine_lock while one thread grabs a large batch of objects to evict - we walk the uncached list of object to free twice which makes all of the above worse - when a thread frees objects, they are already not accounted against global_quarantine.bytes; as the result we can have quarantine_size bytes in quarantine + unbounded amount of memory in large batches in threads that are in process of freeing Reduce size of quarantine in smaller batches to reduce the delays. The only reason to reduce it in batches is amortization of overheads, the new batch size of 1MB should be well enough to amortize spinlock lock/unlock and few function calls. Plus organize quarantine as a FIFO array of batches. This allows to not walk the list in quarantine_reduce() under quarantine_lock, which in turn reduces contention and is just faster. This improves performance of heavy load (syzkaller fuzzing) by ~20% with 4 CPUs and 32GB of RAM. Also this eliminates frequent (every 5 sec) drops of CPU consumption from ~400% to ~100% (one thread reduces quarantine while others are waiting on a mutex). Some reference numbers: 1. Machine with 4 CPUs and 4GB of memory. Quarantine size 128MB. Currently we free 32MB at at time. With new code we free 1MB at a time (1024 batches, ~128 are used). 2. Machine with 32 CPUs and 128GB of memory. Quarantine size 4GB. Currently we free 1GB at at time. With new code we free 8MB at a time (1024 batches, ~512 are used). 3. Machine with 4096 CPUs and 1TB of memory. Quarantine size 32GB. Currently we free 8GB at at time. With new code we free 4MB at a time (16K batches, ~8K are used). Link: http://lkml.kernel.org/r/1478756952-18695-1-git-send-email-dvyukov@google.com Signed-off-by: Dmitry Vyukov <dvyukov@google.com> Cc: Eric Dumazet <edumazet@google.com> Cc: Greg Thelen <gthelen@google.com> Cc: Alexander Potapenko <glider@google.com> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Andrey Konovalov <andreyknvl@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Bug: 64145065 (cherry-picked from 64abdcb24351a27bed6e2b6a3c27348fe532c73f) Change-Id: Idf73cb292453ceffc437121b7a5e152cde1901ff Signed-off-by: Paul Lawrence <paullawrence@google.com> |
||
|
Dmitry Vyukov
|
522e13a017 |
UPSTREAM: kasan: support panic_on_warn
If user sets panic_on_warn, he wants kernel to panic if there is anything barely wrong with the kernel. KASAN-detected errors are definitely not less benign than an arbitrary kernel WARNING. Panic after KASAN errors if panic_on_warn is set. We use this for continuous fuzzing where we want kernel to stop and reboot on any error. Link: http://lkml.kernel.org/r/1476694764-31986-1-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> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Bug: 64145065 (cherry-picked from 5c5c1f36cedfb51ec291181e71817f7fe7e03ee2) Change-Id: Iee7cbc4ffbce8eb8d827447fdf960a6520d10b00 Signed-off-by: Paul Lawrence <paullawrence@google.com> |
||
|
Greg Kroah-Hartman
|
3f1d77ca5f |
Merge 4.9.69 into android-4.9
Changes in 4.9.69 usb: gadget: udc: renesas_usb3: fix number of the pipes can: ti_hecc: Fix napi poll return value for repoll can: kvaser_usb: free buf in error paths can: kvaser_usb: Fix comparison bug in kvaser_usb_read_bulk_callback() can: kvaser_usb: ratelimit errors if incomplete messages are received can: kvaser_usb: cancel urb on -EPIPE and -EPROTO can: ems_usb: cancel urb on -EPIPE and -EPROTO can: esd_usb2: cancel urb on -EPIPE and -EPROTO can: usb_8dev: cancel urb on -EPIPE and -EPROTO virtio: release virtio index when fail to device_register hv: kvp: Avoid reading past allocated blocks from KVP file isa: Prevent NULL dereference in isa_bus driver callbacks scsi: dma-mapping: always provide dma_get_cache_alignment scsi: use dma_get_cache_alignment() as minimum DMA alignment scsi: libsas: align sata_device's rps_resp on a cacheline efi: Move some sysfs files to be read-only by root efi/esrt: Use memunmap() instead of kfree() to free the remapping ASN.1: fix out-of-bounds read when parsing indefinite length item ASN.1: check for error from ASN1_OP_END__ACT actions KEYS: add missing permission check for request_key() destination X.509: reject invalid BIT STRING for subjectPublicKey X.509: fix comparisons of ->pkey_algo x86/PCI: Make broadcom_postcore_init() check acpi_disabled KVM: x86: fix APIC page invalidation btrfs: fix missing error return in btrfs_drop_snapshot ALSA: pcm: prevent UAF in snd_pcm_info ALSA: seq: Remove spurious WARN_ON() at timer check ALSA: usb-audio: Fix out-of-bound error ALSA: usb-audio: Add check return value for usb_string() iommu/vt-d: Fix scatterlist offset handling smp/hotplug: Move step CPUHP_AP_SMPCFD_DYING to the correct place s390: fix compat system call table KVM: s390: Fix skey emulation permission check powerpc/64s: Initialize ISAv3 MMU registers before setting partition table brcmfmac: change driver unbind order of the sdio function devices kdb: Fix handling of kallsyms_symbol_next() return value drm/exynos: gem: Drop NONCONTIG flag for buffers allocated without IOMMU media: dvb: i2c transfers over usb cannot be done from stack arm64: KVM: fix VTTBR_BADDR_MASK BUG_ON off-by-one arm: KVM: Fix VTTBR_BADDR_MASK BUG_ON off-by-one KVM: VMX: remove I/O port 0x80 bypass on Intel hosts KVM: arm/arm64: Fix broken GICH_ELRSR big endian conversion KVM: arm/arm64: vgic-irqfd: Fix MSI entry allocation KVM: arm/arm64: vgic-its: Check result of allocation before use arm64: fpsimd: Prevent registers leaking from dead tasks bus: arm-cci: Fix use of smp_processor_id() in preemptible context bus: arm-ccn: Check memory allocation failure bus: arm-ccn: Fix use of smp_processor_id() in preemptible context bus: arm-ccn: fix module unloading Error: Removing state 147 which has instances left. crypto: talitos - fix AEAD test failures crypto: talitos - fix memory corruption on SEC2 crypto: talitos - fix setkey to check key weakness crypto: talitos - fix AEAD for sha224 on non sha224 capable chips crypto: talitos - fix use of sg_link_tbl_len crypto: talitos - fix ctr-aes-talitos usb: f_fs: Force Reserved1=1 in OS_DESC_EXT_COMPAT ARM: BUG if jumping to usermode address in kernel mode ARM: avoid faulting on qemu thp: reduce indentation level in change_huge_pmd() thp: fix MADV_DONTNEED vs. numa balancing race mm: drop unused pmdp_huge_get_and_clear_notify() Revert "drm/armada: Fix compile fail" Revert "spi: SPI_FSL_DSPI should depend on HAS_DMA" ARM: 8657/1: uaccess: consistently check object sizes vti6: Don't report path MTU below IPV6_MIN_MTU. ARM: OMAP2+: gpmc-onenand: propagate error on initialization failure x86/selftests: Add clobbers for int80 on x86_64 x86/platform/uv/BAU: Fix HUB errors by remove initial write to sw-ack register sched/fair: Make select_idle_cpu() more aggressive x86/hpet: Prevent might sleep splat on resume powerpc/64: Invalidate process table caching after setting process table selftest/powerpc: Fix false failures for skipped tests powerpc: Fix compiling a BE kernel with a powerpc64le toolchain lirc: fix dead lock between open and wakeup_filter module: set __jump_table alignment to 8 powerpc/64: Fix checksum folding in csum_add() ARM: OMAP2+: Fix device node reference counts ARM: OMAP2+: Release device node after it is no longer needed. ASoC: rcar: avoid SSI_MODEx settings for SSI8 gpio: altera: Use handle_level_irq when configured as a level_high HID: chicony: Add support for another ASUS Zen AiO keyboard usb: gadget: configs: plug memory leak USB: gadgetfs: Fix a potential memory leak in 'dev_config()' usb: dwc3: gadget: Fix system suspend/resume on TI platforms usb: gadget: pxa27x: Test for a valid argument pointer usb: gadget: udc: net2280: Fix tmp reusage in net2280 driver kvm: nVMX: VMCLEAR should not cause the vCPU to shut down libata: drop WARN from protocol error in ata_sff_qc_issue() workqueue: trigger WARN if queue_delayed_work() is called with NULL @wq scsi: qla2xxx: Fix ql_dump_buffer scsi: lpfc: Fix crash during Hardware error recovery on SLI3 adapters irqchip/crossbar: Fix incorrect type of register size KVM: nVMX: reset nested_run_pending if the vCPU is going to be reset arm: KVM: Survive unknown traps from guests arm64: KVM: Survive unknown traps from guests KVM: arm/arm64: VGIC: Fix command handling while ITS being disabled spi_ks8995: fix "BUG: key accdaa28 not in .data!" spi_ks8995: regs_size incorrect for some devices bnx2x: prevent crash when accessing PTP with interface down bnx2x: fix possible overrun of VFPF multicast addresses array bnx2x: fix detection of VLAN filtering feature for VF bnx2x: do not rollback VF MAC/VLAN filters we did not configure rds: tcp: Sequence teardown of listen and acceptor sockets to avoid races ibmvnic: Fix overflowing firmware/hardware TX queue ibmvnic: Allocate number of rx/tx buffers agreed on by firmware ipv6: reorder icmpv6_init() and ip6_mr_init() crypto: s5p-sss - Fix completing crypto request in IRQ handler i2c: riic: fix restart condition blk-mq: initialize mq kobjects in blk_mq_init_allocated_queue() zram: set physical queue limits to avoid array out of bounds accesses netfilter: don't track fragmented packets axonram: Fix gendisk handling drm/amd/amdgpu: fix console deadlock if late init failed powerpc/powernv/ioda2: Gracefully fail if too many TCE levels requested EDAC, i5000, i5400: Fix use of MTR_DRAM_WIDTH macro EDAC, i5000, i5400: Fix definition of NRECMEMB register kbuild: pkg: use --transform option to prefix paths in tar coccinelle: fix parallel build with CHECK=scripts/coccicheck x86/mpx/selftests: Fix up weird arrays mac80211_hwsim: Fix memory leak in hwsim_new_radio_nl() gre6: use log_ecn_error module parameter in ip6_tnl_rcv() route: also update fnhe_genid when updating a route cache route: update fnhe_expires for redirect when the fnhe exists drivers/rapidio/devices/rio_mport_cdev.c: fix resource leak in error handling path in 'rio_dma_transfer()' lib/genalloc.c: make the avail variable an atomic_long_t dynamic-debug-howto: fix optional/omitted ending line number to be LARGE instead of 0 NFS: Fix a typo in nfs_rename() sunrpc: Fix rpc_task_begin trace point xfs: fix forgotten rcu read unlock when skipping inode reclaim dt-bindings: usb: fix reg-property port-number range block: wake up all tasks blocked in get_request() sparc64/mm: set fields in deferred pages zsmalloc: calling zs_map_object() from irq is a bug sctp: do not free asoc when it is already dead in sctp_sendmsg sctp: use the right sk after waking up from wait_buf sleep bpf: fix lockdep splat clk: uniphier: fix DAPLL2 clock rate of Pro5 atm: horizon: Fix irq release error jump_label: Invoke jump_label_test() via early_initcall() xfrm: Copy policy family in clone_policy IB/mlx4: Increase maximal message size under UD QP IB/mlx5: Assign send CQ and recv CQ of UMR QP afs: Connect up the CB.ProbeUuid Linux 4.9.69 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> |
||
 Sergey Senozhatsky
|
1618400444 |
zsmalloc: calling zs_map_object() from irq is a bug
[ Upstream commit 1aedcafbf32b3f232c159b14cd0d423fcfe2b861 ] Use BUG_ON(in_interrupt()) in zs_map_object(). This is not a new BUG_ON(), it's always been there, but was recently changed to VM_BUG_ON(). There are several problems there. First, we use use per-CPU mappings both in zsmalloc and in zram, and interrupt may easily corrupt those buffers. Second, and more importantly, we believe it's possible to start leaking sensitive information. Consider the following case: -> process P swap out zram per-cpu mapping CPU1 compress page A -> IRQ swap out zram per-cpu mapping CPU1 compress page B write page from per-cpu mapping CPU1 to zsmalloc pool iret -> process P write page from per-cpu mapping CPU1 to zsmalloc pool [*] return * so we store overwritten data that actually belongs to another page (task) and potentially contains sensitive data. And when process P will page fault it's going to read (swap in) that other task's data. Link: http://lkml.kernel.org/r/20170929045140.4055-1-sergey.senozhatsky@gmail.com Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> Acked-by: Minchan Kim <minchan@kernel.org> 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> |
||
 Kirill A. Shutemov
|
c2edc33d4a |
thp: fix MADV_DONTNEED vs. numa balancing race
commit ced108037c2aa542b3ed8b7afd1576064ad1362a upstream. In case prot_numa, we are under down_read(mmap_sem). It's critical to not clear pmd intermittently to avoid race with MADV_DONTNEED which is also under down_read(mmap_sem): CPU0: CPU1: change_huge_pmd(prot_numa=1) pmdp_huge_get_and_clear_notify() madvise_dontneed() zap_pmd_range() pmd_trans_huge(*pmd) == 0 (without ptl) // skip the pmd set_pmd_at(); // pmd is re-established The race makes MADV_DONTNEED miss the huge pmd and don't clear it which may break userspace. Found by code analysis, never saw triggered. Link: http://lkml.kernel.org/r/20170302151034.27829-3-kirill.shutemov@linux.intel.com Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Hillf Danton <hillf.zj@alibaba-inc.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> [jwang: adjust context for 4.9 ] Signed-off-by: Jack Wang <jinpu.wang@profitbricks.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Kirill A. Shutemov
|
7bdd685cef |
thp: reduce indentation level in change_huge_pmd()
commit 0a85e51d37645e9ce57e5e1a30859e07810ed07c upstream. Patch series "thp: fix few MADV_DONTNEED races" For MADV_DONTNEED to work properly with huge pages, it's critical to not clear pmd intermittently unless you hold down_write(mmap_sem). Otherwise MADV_DONTNEED can miss the THP which can lead to userspace breakage. See example of such race in commit message of patch 2/4. All these races are found by code inspection. I haven't seen them triggered. I don't think it's worth to apply them to stable@. This patch (of 4): Restructure code in preparation for a fix. Link: http://lkml.kernel.org/r/20170302151034.27829-2-kirill.shutemov@linux.intel.com Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Hillf Danton <hillf.zj@alibaba-inc.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> [jwang: adjust context for 4.9] Signed-off-by: Jack Wang <jinpu.wang@profitbricks.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Greg Kroah-Hartman
|
fdeec8fdb7 |
Merge 4.9.68 into android-4.9
Changes in 4.9.68 bcache: only permit to recovery read error when cache device is clean bcache: recover data from backing when data is clean drm/fsl-dcu: avoid disabling pixel clock twice on suspend drm/fsl-dcu: enable IRQ before drm_atomic_helper_resume() Revert "crypto: caam - get rid of tasklet" mm, oom_reaper: gather each vma to prevent leaking TLB entry uas: Always apply US_FL_NO_ATA_1X quirk to Seagate devices usb: quirks: Add no-lpm quirk for KY-688 USB 3.1 Type-C Hub serial: 8250_pci: Add Amazon PCI serial device ID s390/runtime instrumentation: simplify task exit handling USB: serial: option: add Quectel BG96 id ima: fix hash algorithm initialization s390/pci: do not require AIS facility selftests/x86/ldt_get: Add a few additional tests for limits staging: greybus: loopback: Fix iteration count on async path m68k: fix ColdFire node shift size calculation serial: 8250_fintek: Fix rs485 disablement on invalid ioctl() staging: rtl8188eu: avoid a null dereference on pmlmepriv spi: sh-msiof: Fix DMA transfer size check spi: spi-axi: fix potential use-after-free after deregistration mmc: sdhci-msm: fix issue with power irq usb: phy: tahvo: fix error handling in tahvo_usb_probe() serial: 8250: Preserve DLD[7:4] for PORT_XR17V35X x86/entry: Use SYSCALL_DEFINE() macros for sys_modify_ldt() EDAC, sb_edac: Fix missing break in switch sysrq : fix Show Regs call trace on ARM usbip: tools: Install all headers needed for libusbip development perf test attr: Fix ignored test case result kprobes/x86: Disable preemption in ftrace-based jprobes tools include: Do not use poison with C++ iio: adc: ti-ads1015: add 10% to conversion wait time dax: Avoid page invalidation races and unnecessary radix tree traversals net/mlx4_en: Fix type mismatch for 32-bit systems l2tp: take remote address into account in l2tp_ip and l2tp_ip6 socket lookups dmaengine: stm32-dma: Set correct args number for DMA request from DT dmaengine: stm32-dma: Fix null pointer dereference in stm32_dma_tx_status usb: gadget: f_fs: Fix ExtCompat descriptor validation libcxgb: fix error check for ip6_route_output() net: systemport: Utilize skb_put_padto() net: systemport: Pad packet before inserting TSB ARM: OMAP2+: Fix WL1283 Bluetooth Baud Rate ARM: OMAP1: DMA: Correct the number of logical channels vti6: fix device register to report IFLA_INFO_KIND be2net: fix accesses to unicast list be2net: fix unicast list filling net/appletalk: Fix kernel memory disclosure libfs: Modify mount_pseudo_xattr to be clear it is not a userspace mount net: qrtr: Mark 'buf' as little endian mm: fix remote numa hits statistics mac80211: calculate min channel width correctly ravb: Remove Rx overflow log messages nfs: Don't take a reference on fl->fl_file for LOCK operation drm/exynos/decon5433: update shadow registers iff there are active windows drm/exynos/decon5433: set STANDALONE_UPDATE_F also if planes are disabled KVM: arm/arm64: Fix occasional warning from the timer work function mac80211: prevent skb/txq mismatch NFSv4: Fix client recovery when server reboots multiple times perf/x86/intel: Account interrupts for PEBS errors powerpc/mm: Fix memory hotplug BUG() on radix qla2xxx: Fix wrong IOCB type assumption drm/amdgpu: fix bug set incorrect value to vce register drm/exynos/decon5433: set STANDALONE_UPDATE_F on output enablement net: sctp: fix array overrun read on sctp_timer_tbl x86/fpu: Set the xcomp_bv when we fake up a XSAVES area drm/amdgpu: fix unload driver issue for virtual display mac80211: don't try to sleep in rate_control_rate_init() RDMA/qedr: Return success when not changing QP state RDMA/qedr: Fix RDMA CM loopback tipc: fix nametbl_lock soft lockup at module exit tipc: fix cleanup at module unload dmaengine: pl330: fix double lock tcp: correct memory barrier usage in tcp_check_space() i2c: i2c-cadence: Initialize configuration before probing devices nvmet: cancel fatal error and flush async work before free controller gtp: clear DF bit on GTP packet tx gtp: fix cross netns recv on gtp socket net: phy: micrel: KSZ8795 do not set SUPPORTED_[Asym_]Pause net: thunderx: avoid dereferencing xcv when NULL be2net: fix initial MAC setting vfio/spapr: Fix missing mutex unlock when creating a window mm: avoid returning VM_FAULT_RETRY from ->page_mkwrite handlers xen-netfront: Improve error handling during initialization cec: initiator should be the same as the destination for, poll xen-netback: vif counters from int/long to u64 net: fec: fix multicast filtering hardware setup dma-buf/dma-fence: Extract __dma_fence_is_later() dma-buf/sw-sync: Fix the is-signaled test to handle u32 wraparound dma-buf/sw-sync: Prevent user overflow on timeline advance dma-buf/sw-sync: Reduce irqsave/irqrestore from known context dma-buf/sw-sync: sync_pt is private and of fixed size dma-buf/sw-sync: Fix locking around sync_timeline lists dma-buf/sw-sync: Use an rbtree to sort fences in the timeline dma-buf/sw_sync: move timeline_fence_ops around dma-buf/sw_sync: clean up list before signaling the fence dma-fence: Clear fence->status during dma_fence_init() dma-fence: Wrap querying the fence->status dma-fence: Introduce drm_fence_set_error() helper dma-buf/sw_sync: force signal all unsignaled fences on dying timeline dma-buf/sync_file: hold reference to fence when creating sync_file dma-buf: Update kerneldoc for sync_file_create usb: hub: Cycle HUB power when initialization fails usb: xhci: fix panic in xhci_free_virt_devices_depth_first USB: core: Add type-specific length check of BOS descriptors USB: Increase usbfs transfer limit USB: devio: Prevent integer overflow in proc_do_submiturb() USB: usbfs: Filter flags passed in from user space usb: host: fix incorrect updating of offset xen-netfront: avoid crashing on resume after a failure in talk_to_netback() Linux 4.9.68 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> |
||
 Michal Hocko
|
fae478cd93 |
mm: fix remote numa hits statistics
[ Upstream commit 2df26639e708a88dcc22171949da638a9998f3bc ] Jia He has noticed that commit |
||
 Wang Nan
|
ee23ae915f |
mm, oom_reaper: gather each vma to prevent leaking TLB entry
commit 687cb0884a714ff484d038e9190edc874edcf146 upstream. tlb_gather_mmu(&tlb, mm, 0, -1) means gathering the whole virtual memory space. In this case, tlb->fullmm is true. Some archs like arm64 doesn't flush TLB when tlb->fullmm is true: commit |
||
|
Greg Kroah-Hartman
|
12cae95a09 |
Merge 4.9.67 into android-4.9
Changes in 4.9.67 ARM: dts: LogicPD Torpedo: Fix camera pin mux ARM: dts: omap3: logicpd-torpedo-37xx-devkit: Fix MMC1 cd-gpio mm, thp: Do not make page table dirty unconditionally in touch_p[mu]d() mm/cma: fix alloc_contig_range ret code/potential leak mm, hugetlbfs: introduce ->split() to vm_operations_struct mm/madvise.c: fix madvise() infinite loop under special circumstances btrfs: clear space cache inode generation always nfsd: Fix stateid races between OPEN and CLOSE nfsd: Fix another OPEN stateid race nfsd: fix panic in posix_unblock_lock called from nfs4_laundromat mfd: twl4030-power: Fix pmic for boards that need vmmc1 on reboot ARM: OMAP2+: Fix WL1283 Bluetooth Baud Rate KVM: x86: pvclock: Handle first-time write to pvclock-page contains random junk KVM: x86: Exit to user-mode on #UD intercept when emulator requires KVM: x86: inject exceptions produced by x86_decode_insn KVM: lapic: Split out x2apic ldr calculation KVM: lapic: Fixup LDR on load in x2apic mmc: core: Do not leave the block driver in a suspended state mmc: core: prepend 0x to OCR entry in sysfs eeprom: at24: fix reading from 24MAC402/24MAC602 eeprom: at24: correctly set the size for at24mac402 eeprom: at24: check at24_read/write arguments i2c: i801: Fix Failed to allocate irq -2147483648 error bcache: Fix building error on MIPS hwmon: (jc42) optionally try to disable the SMBUS timeout nvme-pci: add quirk for delay before CHK RDY for WDC SN200 Revert "drm/radeon: dont switch vt on suspend" drm/amdgpu: potential uninitialized variable in amdgpu_vce_ring_parse_cs() drm/amdgpu: Potential uninitialized variable in amdgpu_vm_update_directories() drm/radeon: fix atombios on big endian drm/panel: simple: Add missing panel_simple_unprepare() calls drm/hisilicon: Ensure LDI regs are properly configured. drm/ttm: once more fix ttm_buffer_object_transfer drm/amd/pp: fix typecast error in powerplay. Revert "x86/entry/64: Add missing irqflags tracing to native_load_gs_index()" NFS: revalidate "." etc correctly on "open". drm/i915: Don't try indexed reads to alternate slave addresses drm/i915: Prevent zero length "index" write Linux 4.9.67 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> |
||
 chenjie
|
ba32d7dce4 |
mm/madvise.c: fix madvise() infinite loop under special circumstances
commit 6ea8d958a2c95a1d514015d4e29ba21a8c0a1a91 upstream.
MADVISE_WILLNEED has always been a noop for DAX (formerly XIP) mappings.
Unfortunately madvise_willneed() doesn't communicate this information
properly to the generic madvise syscall implementation. The calling
convention is quite subtle there. madvise_vma() is supposed to either
return an error or update &prev otherwise the main loop will never
advance to the next vma and it will keep looping for ever without a way
to get out of the kernel.
It seems this has been broken since introduction. Nobody has noticed
because nobody seems to be using MADVISE_WILLNEED on these DAX mappings.
[mhocko@suse.com: rewrite changelog]
Link: http://lkml.kernel.org/r/20171127115318.911-1-guoxuenan@huawei.com
Fixes:
|
||
 Dan Williams
|
cebe139e57 |
mm, hugetlbfs: introduce ->split() to vm_operations_struct
commit 31383c6865a578834dd953d9dbc88e6b19fe3997 upstream.
Patch series "device-dax: fix unaligned munmap handling"
When device-dax is operating in huge-page mode we want it to behave like
hugetlbfs and fail attempts to split vmas into unaligned ranges. It
would be messy to teach the munmap path about device-dax alignment
constraints in the same (hstate) way that hugetlbfs communicates this
constraint. Instead, these patches introduce a new ->split() vm
operation.
This patch (of 2):
The device-dax interface has similar constraints as hugetlbfs in that it
requires the munmap path to unmap in huge page aligned units. Rather
than add more custom vma handling code in __split_vma() introduce a new
vm operation to perform this vma specific check.
Link: http://lkml.kernel.org/r/151130418135.4029.6783191281930729710.stgit@dwillia2-desk3.amr.corp.intel.com
Fixes:
|
||
 Mike Kravetz
|
436f19a2e4 |
mm/cma: fix alloc_contig_range ret code/potential leak
commit 63cd448908b5eb51d84c52f02b31b9b4ccd1cb5a upstream.
If the call __alloc_contig_migrate_range() in alloc_contig_range returns
-EBUSY, processing continues so that test_pages_isolated() is called
where there is a tracepoint to identify the busy pages. However, it is
possible for busy pages to become available between the calls to these
two routines. In this case, the range of pages may be allocated.
Unfortunately, the original return code (ret == -EBUSY) is still set and
returned to the caller. Therefore, the caller believes the pages were
not allocated and they are leaked.
Update the comment to indicate that allocation is still possible even if
__alloc_contig_migrate_range returns -EBUSY. Also, clear return code in
this case so that it is not accidentally used or returned to caller.
Link: http://lkml.kernel.org/r/20171122185214.25285-1-mike.kravetz@oracle.com
Fixes:
|
||
|
Kirill A. Shutemov
|
7031ae2ab3 |
mm, thp: Do not make page table dirty unconditionally in touch_p[mu]d()
commit a8f97366452ed491d13cf1e44241bc0b5740b1f0 upstream. Currently, we unconditionally make page table dirty in touch_pmd(). It may result in false-positive can_follow_write_pmd(). We may avoid the situation, if we would only make the page table entry dirty if caller asks for write access -- FOLL_WRITE. The patch also changes touch_pud() in the same way. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Hugh Dickins <hughd@google.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> [Salvatore Bonaccorso: backport for 4.9: - Adjust context - Drop specific part for PUD-sized transparent hugepages. Support for PUD-sized transparent hugepages was added in v4.11-rc1 ] Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Greg Kroah-Hartman
|
ea83e4a902 |
Merge 4.9.65 into android-4.9
Changes in 4.9.65 tcp_nv: fix division by zero in tcpnv_acked() net: vrf: correct FRA_L3MDEV encode type tcp: do not mangle skb->cb[] in tcp_make_synack() netfilter/ipvs: clear ipvs_property flag when SKB net namespace changed bonding: discard lowest hash bit for 802.3ad layer3+4 net: cdc_ether: fix divide by 0 on bad descriptors net: qmi_wwan: fix divide by 0 on bad descriptors qmi_wwan: Add missing skb_reset_mac_header-call net: usb: asix: fill null-ptr-deref in asix_suspend vlan: fix a use-after-free in vlan_device_event() af_netlink: ensure that NLMSG_DONE never fails in dumps sctp: do not peel off an assoc from one netns to another one fealnx: Fix building error on MIPS net/sctp: Always set scope_id in sctp_inet6_skb_msgname crypto: dh - fix memleak in setkey crypto: dh - Fix double free of ctx->p ima: do not update security.ima if appraisal status is not INTEGRITY_PASS serial: omap: Fix EFR write on RTS deassertion serial: 8250_fintek: Fix finding base_port with activated SuperIO dmaengine: dmatest: warn user when dma test times out ocfs2: fix cluster hang after a node dies ocfs2: should wait dio before inode lock in ocfs2_setattr() ipmi: fix unsigned long underflow mm/page_alloc.c: broken deferred calculation coda: fix 'kernel memory exposure attempt' in fsync mm/pagewalk.c: report holes in hugetlb ranges Linux 4.9.65 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> |
||
 Jann Horn
|
ceaec6e8cd |
mm/pagewalk.c: report holes in hugetlb ranges
commit 373c4557d2aa362702c4c2d41288fb1e54990b7c upstream.
This matters at least for the mincore syscall, which will otherwise copy
uninitialized memory from the page allocator to userspace. It is
probably also a correctness error for /proc/$pid/pagemap, but I haven't
tested that.
Removing the `walk->hugetlb_entry` condition in walk_hugetlb_range() has
no effect because the caller already checks for that.
This only reports holes in hugetlb ranges to callers who have specified
a hugetlb_entry callback.
This issue was found using an AFL-based fuzzer.
v2:
- don't crash on ->pte_hole==NULL (Andrew Morton)
- add Cc stable (Andrew Morton)
Changed for 4.4/4.9 stable backport:
- fix up conflict in the huge_pte_offset() call
Fixes:
|
||
 Pavel Tatashin
|
9980b82783 |
mm/page_alloc.c: broken deferred calculation
commit d135e5750205a21a212a19dbb05aeb339e2cbea7 upstream. In reset_deferred_meminit() we determine number of pages that must not be deferred. We initialize pages for at least 2G of memory, but also pages for reserved memory in this node. The reserved memory is determined in this function: memblock_reserved_memory_within(), which operates over physical addresses, and returns size in bytes. However, reset_deferred_meminit() assumes that that this function operates with pfns, and returns page count. The result is that in the best case machine boots slower than expected due to initializing more pages than needed in single thread, and in the worst case panics because fewer than needed pages are initialized early. Link: http://lkml.kernel.org/r/20171021011707.15191-1-pasha.tatashin@oracle.com Fixes: 864b9a393dcb ("mm: consider memblock reservations for deferred memory initialization sizing") Signed-off-by: Pavel Tatashin <pasha.tatashin@oracle.com> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Mel Gorman <mgorman@techsingularity.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> |
||
|
Greg Kroah-Hartman
|
f108c7d9b5 |
Merge 4.9.58 into android-4.9
Changes in 4.9.58 MIPS: Fix minimum alignment requirement of IRQ stack Revert "bsg-lib: don't free job in bsg_prepare_job" xen-netback: Use GFP_ATOMIC to allocate hash locking/lockdep: Add nest_lock integrity test watchdog: kempld: fix gcc-4.3 build irqchip/crossbar: Fix incorrect type of local variables initramfs: finish fput() before accessing any binary from initramfs mac80211_hwsim: check HWSIM_ATTR_RADIO_NAME length ALSA: hda: Add Geminilake HDMI codec ID qed: Don't use attention PTT for configuring BW mac80211: fix power saving clients handling in iwlwifi net/mlx4_en: fix overflow in mlx4_en_init_timestamp() staging: vchiq_2835_arm: Make cache-line-size a required DT property netfilter: nf_ct_expect: Change __nf_ct_expect_check() return value. iio: adc: xilinx: Fix error handling f2fs: do SSR for data when there is enough free space sched/fair: Update rq clock before changing a task's CPU affinity Btrfs: send, fix failure to rename top level inode due to name collision f2fs: do not wait for writeback in write_begin md/linear: shutup lockdep warnning sparc64: Migrate hvcons irq to panicked cpu net/mlx4_core: Fix VF overwrite of module param which disables DMFS on new probed PFs crypto: xts - Add ECB dependency mm/memory_hotplug: set magic number to page->freelist instead of page->lru.next ocfs2/dlmglue: prepare tracking logic to avoid recursive cluster lock slub: do not merge cache if slub_debug contains a never-merge flag scsi: scsi_dh_emc: return success in clariion_std_inquiry() ASoC: mediatek: add I2C dependency for CS42XX8 drm/amdgpu: refuse to reserve io mem for split VRAM buffers net: mvpp2: release reference to txq_cpu[] entry after unmapping qede: Prevent index problems in loopback test qed: Reserve doorbell BAR space for present CPUs qed: Read queue state before releasing buffer i2c: at91: ensure state is restored after suspending ceph: don't update_dentry_lease unless we actually got one ceph: fix bogus endianness change in ceph_ioctl_set_layout ceph: clean up unsafe d_parent accesses in build_dentry_path uapi: fix linux/rds.h userspace compilation errors uapi: fix linux/mroute6.h userspace compilation errors IB/hfi1: Use static CTLE with Preset 6 for integrated HFIs IB/hfi1: Allocate context data on memory node target/iscsi: Fix unsolicited data seq_end_offset calculation hrtimer: Catch invalid clockids again nfsd/callback: Cleanup callback cred on shutdown powerpc/perf: Add restrictions to PMC5 in power9 DD1 drm/nouveau/gr/gf100-: fix ccache error logging regulator: core: Resolve supplies before disabling unused regulators btmrvl: avoid double-disable_irq() race EDAC, mce_amd: Print IPID and Syndrome on a separate line cpufreq: CPPC: add ACPI_PROCESSOR dependency usb: dwc3: gadget: Correct ISOC DATA PIDs for short packets Linux 4.9.58 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> |
||
 Grygorii Maistrenko
|
076a6220bc |
slub: do not merge cache if slub_debug contains a never-merge flag
[ Upstream commit c6e28895a4372992961888ffaadc9efc643b5bfe ] In case CONFIG_SLUB_DEBUG_ON=n, find_mergeable() gets debug features from commandline but never checks if there are features from the SLAB_NEVER_MERGE set. As a result selected by slub_debug caches are always mergeable if they have been created without a custom constructor set or without one of the SLAB_* debug features on. This moves the SLAB_NEVER_MERGE check below the flags update from commandline to make sure it won't merge the slab cache if one of the debug features is on. Link: http://lkml.kernel.org/r/20170101124451.GA4740@lp-laptop-d Signed-off-by: Grygorii Maistrenko <grygoriimkd@gmail.com> Reviewed-by: Pekka Enberg <penberg@kernel.org> Acked-by: David Rientjes <rientjes@google.com> Acked-by: Christoph Lameter <cl@linux.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.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> |
||
 Yasuaki Ishimatsu
|
a5f043b241 |
mm/memory_hotplug: set magic number to page->freelist instead of page->lru.next
[ Upstream commit ddffe98d166f4a93d996d5aa628fd745311fc1e7 ]
To identify that pages of page table are allocated from bootmem
allocator, magic number sets to page->lru.next.
But page->lru list is initialized in reserve_bootmem_region(). So when
calling free_pagetable(), the function cannot find the magic number of
pages. And free_pagetable() frees the pages by free_reserved_page() not
put_page_bootmem().
But if the pages are allocated from bootmem allocator and used as page
table, the pages have private flag. So before freeing the pages, we
should clear the private flag by put_page_bootmem().
Before applying the commit
|
||
|
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>
|
||
|
Michal Hocko
|
2b8197073a |
mm, oom_reaper: skip mm structs with mmu notifiers
commit 4d4bbd8526a8fbeb2c090ea360211fceff952383 upstream.
Andrea has noticed that the oom_reaper doesn't invalidate the range via
mmu notifiers (mmu_notifier_invalidate_range_start/end) and that can
corrupt the memory of the kvm guest for example.
tlb_flush_mmu_tlbonly already invokes mmu notifiers but that is not
sufficient as per Andrea:
"mmu_notifier_invalidate_range cannot be used in replacement of
mmu_notifier_invalidate_range_start/end. For KVM
mmu_notifier_invalidate_range is a noop and rightfully so. A MMU
notifier implementation has to implement either ->invalidate_range
method or the invalidate_range_start/end methods, not both. And if you
implement invalidate_range_start/end like KVM is forced to do, calling
mmu_notifier_invalidate_range in common code is a noop for KVM.
For those MMU notifiers that can get away only implementing
->invalidate_range, the ->invalidate_range is implicitly called by
mmu_notifier_invalidate_range_end(). And only those secondary MMUs
that share the same pagetable with the primary MMU (like AMD iommuv2)
can get away only implementing ->invalidate_range"
As the callback is allowed to sleep and the implementation is out of
hand of the MM it is safer to simply bail out if there is an mmu
notifier registered. In order to not fail too early make the
mm_has_notifiers check under the oom_lock and have a little nap before
failing to give the current oom victim some more time to exit.
[akpm@linux-foundation.org: coding-style fixes]
Link: http://lkml.kernel.org/r/20170913113427.2291-1-mhocko@kernel.org
Fixes:
|
||
|
Greg Kroah-Hartman
|
e5eba30388 |
Merge 4.9.54 into android-4.9
Changes in 4.9.54 drm_fourcc: Fix DRM_FORMAT_MOD_LINEAR #define drm: bridge: add DT bindings for TI ths8135 GFS2: Fix reference to ERR_PTR in gfs2_glock_iter_next drm/i915: Fix the overlay frontbuffer tracking ARM: dts: exynos: Add CPU OPPs for Exynos4412 Prime clk: sunxi-ng: fix PLL_CPUX adjusting on H3 RDS: RDMA: Fix the composite message user notification ARM: dts: r8a7790: Use R-Car Gen 2 fallback binding for msiof nodes MIPS: Ensure bss section ends on a long-aligned address MIPS: ralink: Fix a typo in the pinmux setup. MIPS: ralink: Fix incorrect assignment on ralink_soc power: supply: axp288_fuel_gauge: Fix fuel_gauge_reg_readb return on error scsi: be2iscsi: Add checks to validate CID alloc/free ARM: dts: am335x-chilisom: Wakeup from RTC-only state by power on event igb: re-assign hw address pointer on reset after PCI error extcon: axp288: Use vbus-valid instead of -present to determine cable presence reset: ti_syscon: fix a ti_syscon_reset_status issue sh_eth: use correct name for ECMR_MPDE bit clk/axs10x: Clear init field in driver probe usb: make the MTK XHCI driver compile for older MIPS SoCs hwmon: (gl520sm) Fix overflows and crash seen when writing into limit attributes iio: adc: imx25-gcq: Fix module autoload iio: adc: axp288: Drop bogus AXP288_ADC_TS_PIN_CTRL register modifications iio: adc: hx711: Add DT binding for avia,hx711 IB/rxe: Add a runtime check in alloc_index() IB/rxe: Fix a MR reference leak in check_rkey() ARM: 8635/1: nommu: allow enabling REMAP_VECTORS_TO_RAM drm/i915/psr: disable psr2 for resolution greater than 32X20 serial: 8250: moxa: Store num_ports in brd tty: goldfish: Fix a parameter of a call to free_irq serial: 8250_port: Remove dangerous pr_debug() IB/ipoib: Fix deadlock over vlan_mutex IB/ipoib: rtnl_unlock can not come after free_netdev IB/ipoib: Replace list_del of the neigh->list with list_del_init arm: dts: mt2701: Add subsystem clock controller device nodes drm/amdkfd: fix improper return value on error USB: serial: mos7720: fix control-message error handling USB: serial: mos7840: fix control-message error handling sfc: get PIO buffer size from the NIC partitions/efi: Fix integer overflow in GPT size calculation ASoC: dapm: handle probe deferrals audit: log 32-bit socketcalls ath10k: prevent sta pointer rcu violation spi: pxa2xx: Add support for Intel Gemini Lake iommu/arm-smmu: Set privileged attribute to 'default' instead of 'unprivileged' usb: chipidea: vbus event may exist before starting gadget rtl8xxxu: Add additional USB IDs for rtl8192eu devices ASoC: dapm: fix some pointer error handling drm: mali-dp: Fix destination size handling when rotating drm: mali-dp: Fix transposed horizontal/vertical flip HID: wacom: release the resources before leaving despite devm MIPS: Lantiq: Fix another request_mem_region() return code check mips: ath79: clock:- Unmap region obtained by of_iomap lkdtm: Fix Oops when unloading the module net: core: Prevent from dereferencing null pointer when releasing SKB net/packet: check length in getsockopt() called with PACKET_HDRLEN team: fix memory leaks usb: plusb: Add support for PL-27A1 udp: disable inner UDP checksum offloads in IPsec case net: dsa: b53: Include IMP/CPU port in dumb forwarding mode qed: Fix possible system hang in the dcbnl-getdcbx() path. mmc: sdio: fix alignment issue in struct sdio_func bridge: netlink: register netdevice before executing changelink Btrfs: fix segmentation fault when doing dio read Btrfs: fix potential use-after-free for cloned bio sata_via: Enable hotplug only on VT6421 hugetlbfs: initialize shared policy as part of inode allocation kasan: do not sanitize kexec purgatory drivers/rapidio/devices/tsi721.c: make module parameter variable name unique netfilter: invoke synchronize_rcu after set the _hook_ to NULL MIPS: IRQ Stack: Unwind IRQ stack onto task stack iommu/exynos: Block SYSMMU while invalidating FLPD cache exynos-gsc: Do not swap cb/cr for semi planar formats MIPS: smp-cps: Fix retrieval of VPE mask on big endian CPUs nvme-rdma: handle cpu unplug when re-establishing the controller netfilter: nfnl_cthelper: fix incorrect helper->expect_class_max parisc: perf: Fix potential NULL pointer dereference nfs: make nfs4_cb_sv_ops static ibmvnic: Free tx/rx scrq pointer array when releasing sub-crqs cpufreq: intel_pstate: Update pid_params.sample_rate_ns in pid_param_set() x86/acpi: Restore the order of CPU IDs iommu/io-pgtable-arm: Check for leaf entry before dereferencing it mm/cgroup: avoid panic when init with low memory rds: ib: add error handle md/raid10: submit bio directly to replacement disk netfilter: nf_tables: set pktinfo->thoff at AH header if found i2c: meson: fix wrong variable usage in meson_i2c_put_data xfs: remove kmem_zalloc_greedy ASoC: wm_adsp: Return an error on write to a disabled volatile control libata: transport: Remove circular dependency at free time ARM: dts: BCM5301X: Fix memory start address tools/power turbostat: bugfix: GFXMHz column not changing IB/qib: fix false-postive maybe-uninitialized warning ARM: remove duplicate 'const' annotations' ASoC: rt5514: fix gcc-7 warning ASoC: rt5659: drop double const ASoC: rt5660: remove double const ALSA: au88x0: avoid theoretical uninitialized access ttpci: address stringop overflow warning s390/mm: make pmdp_invalidate() do invalidation only Linux 4.9.54 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> |
||
 Laurent Dufour
|
a495f72f8a |
mm/cgroup: avoid panic when init with low memory
[ Upstream commit bfc7228b9a9647e1c353e50b40297a2929801759 ] The system may panic when initialisation is done when almost all the memory is assigned to the huge pages using the kernel command line parameter hugepage=xxxx. Panic may occur like this: Unable to handle kernel paging request for data at address 0x00000000 Faulting instruction address: 0xc000000000302b88 Oops: Kernel access of bad area, sig: 11 [#1] SMP NR_CPUS=2048 [ 0.082424] NUMA pSeries Modules linked in: CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.9.0-15-generic #16-Ubuntu task: c00000021ed01600 task.stack: c00000010d108000 NIP: c000000000302b88 LR: c000000000270e04 CTR: c00000000016cfd0 REGS: c00000010d10b2c0 TRAP: 0300 Not tainted (4.9.0-15-generic) MSR: 8000000002009033 <SF,VEC,EE,ME,IR,DR,RI,LE>[ 0.082770] CR: 28424422 XER: 00000000 CFAR: c0000000003d28b8 DAR: 0000000000000000 DSISR: 40000000 SOFTE: 1 GPR00: c000000000270e04 c00000010d10b540 c00000000141a300 c00000010fff6300 GPR04: 0000000000000000 00000000026012c0 c00000010d10b630 0000000487ab0000 GPR08: 000000010ee90000 c000000001454fd8 0000000000000000 0000000000000000 GPR12: 0000000000004400 c00000000fb80000 00000000026012c0 00000000026012c0 GPR16: 00000000026012c0 0000000000000000 0000000000000000 0000000000000002 GPR20: 000000000000000c 0000000000000000 0000000000000000 00000000024200c0 GPR24: c0000000016eef48 0000000000000000 c00000010fff7d00 00000000026012c0 GPR28: 0000000000000000 c00000010fff7d00 c00000010fff6300 c00000010d10b6d0 NIP mem_cgroup_soft_limit_reclaim+0xf8/0x4f0 LR do_try_to_free_pages+0x1b4/0x450 Call Trace: do_try_to_free_pages+0x1b4/0x450 try_to_free_pages+0xf8/0x270 __alloc_pages_nodemask+0x7a8/0xff0 new_slab+0x104/0x8e0 ___slab_alloc+0x620/0x700 __slab_alloc+0x34/0x60 kmem_cache_alloc_node_trace+0xdc/0x310 mem_cgroup_init+0x158/0x1c8 do_one_initcall+0x68/0x1d0 kernel_init_freeable+0x278/0x360 kernel_init+0x24/0x170 ret_from_kernel_thread+0x5c/0x74 Instruction dump: eb81ffe0 eba1ffe8 ebc1fff0 ebe1fff8 4e800020 3d230001 e9499a42 3d220004 3929acd8 794a1f24 7d295214 eac90100 <e9360000> 2fa90000 419eff74 3b200000 ---[ end trace 342f5208b00d01b6 ]--- This is a chicken and egg issue where the kernel try to get free memory when allocating per node data in mem_cgroup_init(), but in that path mem_cgroup_soft_limit_reclaim() is called which assumes that these data are allocated. As mem_cgroup_soft_limit_reclaim() is best effort, it should return when these data are not yet allocated. This patch also fixes potential null pointer access in mem_cgroup_remove_from_trees() and mem_cgroup_update_tree(). Link: http://lkml.kernel.org/r/1487856999-16581-2-git-send-email-ldufour@linux.vnet.ibm.com Signed-off-by: Laurent Dufour <ldufour@linux.vnet.ibm.com> Acked-by: Michal Hocko <mhocko@suse.com> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Acked-by: Balbir Singh <bsingharora@gmail.com> Cc: Vladimir Davydov <vdavydov.dev@gmail.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> |
||
|
Greg Kroah-Hartman
|
c30c69c76c |
Merge 4.9.52 into android-4.9
Changes in 4.9.52
SUNRPC: Refactor svc_set_num_threads()
NFSv4: Fix callback server shutdown
mm: prevent double decrease of nr_reserved_highatomic
orangefs: Don't clear SGID when inheriting ACLs
IB/{qib, hfi1}: Avoid flow control testing for RDMA write operation
drm/sun4i: Implement drm_driver lastclose to restore fbdev console
IB/addr: Fix setting source address in addr6_resolve()
tty: improve tty_insert_flip_char() fast path
tty: improve tty_insert_flip_char() slow path
tty: fix __tty_insert_flip_char regression
pinctrl/amd: save pin registers over suspend/resume
Input: i8042 - add Gigabyte P57 to the keyboard reset table
MIPS: math-emu: <MAX|MAXA|MIN|MINA>.<D|S>: Fix quiet NaN propagation
MIPS: math-emu: <MAX|MAXA|MIN|MINA>.<D|S>: Fix cases of both inputs zero
MIPS: math-emu: <MAX|MIN>.<D|S>: Fix cases of both inputs negative
MIPS: math-emu: <MAXA|MINA>.<D|S>: Fix cases of input values with opposite signs
MIPS: math-emu: <MAXA|MINA>.<D|S>: Fix cases of both infinite inputs
MIPS: math-emu: MINA.<D|S>: Fix some cases of infinity and zero inputs
MIPS: math-emu: Handle zero accumulator case in MADDF and MSUBF separately
MIPS: math-emu: <MADDF|MSUBF>.<D|S>: Fix NaN propagation
MIPS: math-emu: <MADDF|MSUBF>.<D|S>: Fix some cases of infinite inputs
MIPS: math-emu: <MADDF|MSUBF>.<D|S>: Fix some cases of zero inputs
MIPS: math-emu: <MADDF|MSUBF>.<D|S>: Clean up "maddf_flags" enumeration
MIPS: math-emu: <MADDF|MSUBF>.S: Fix accuracy (32-bit case)
MIPS: math-emu: <MADDF|MSUBF>.D: Fix accuracy (64-bit case)
crypto: ccp - Fix XTS-AES-128 support on v5 CCPs
crypto: AF_ALG - remove SGL terminator indicator when chaining
ext4: fix incorrect quotaoff if the quota feature is enabled
ext4: fix quota inconsistency during orphan cleanup for read-only mounts
powerpc: Fix DAR reporting when alignment handler faults
block: Relax a check in blk_start_queue()
md/bitmap: disable bitmap_resize for file-backed bitmaps.
skd: Avoid that module unloading triggers a use-after-free
skd: Submit requests to firmware before triggering the doorbell
scsi: zfcp: fix queuecommand for scsi_eh commands when DIX enabled
scsi: zfcp: add handling for FCP_RESID_OVER to the fcp ingress path
scsi: zfcp: fix capping of unsuccessful GPN_FT SAN response trace records
scsi: zfcp: fix passing fsf_req to SCSI trace on TMF to correlate with HBA
scsi: zfcp: fix missing trace records for early returns in TMF eh handlers
scsi: zfcp: fix payload with full FCP_RSP IU in SCSI trace records
scsi: zfcp: trace HBA FSF response by default on dismiss or timedout late response
scsi: zfcp: trace high part of "new" 64 bit SCSI LUN
scsi: megaraid_sas: set minimum value of resetwaittime to be 1 secs
scsi: megaraid_sas: Check valid aen class range to avoid kernel panic
scsi: megaraid_sas: Return pended IOCTLs with cmd_status MFI_STAT_WRONG_STATE in case adapter is dead
scsi: storvsc: fix memory leak on ring buffer busy
scsi: sg: remove 'save_scat_len'
scsi: sg: use standard lists for sg_requests
scsi: sg: off by one in sg_ioctl()
scsi: sg: factor out sg_fill_request_table()
scsi: sg: fixup infoleak when using SG_GET_REQUEST_TABLE
scsi: qla2xxx: Correction to vha->vref_count timeout
scsi: qla2xxx: Fix an integer overflow in sysfs code
ftrace: Fix selftest goto location on error
ftrace: Fix memleak when unregistering dynamic ops when tracing disabled
tracing: Add barrier to trace_printk() buffer nesting modification
tracing: Apply trace_clock changes to instance max buffer
ARC: Re-enable MMU upon Machine Check exception
PCI: shpchp: Enable bridge bus mastering if MSI is enabled
PCI: pciehp: Report power fault only once until we clear it
net/netfilter/nf_conntrack_core: Fix net_conntrack_lock()
s390/mm: fix local TLB flushing vs. detach of an mm address space
s390/mm: fix race on mm->context.flush_mm
media: v4l2-compat-ioctl32: Fix timespec conversion
media: uvcvideo: Prevent heap overflow when accessing mapped controls
PM / devfreq: Fix memory leak when fail to register device
bcache: initialize dirty stripes in flash_dev_run()
bcache: Fix leak of bdev reference
bcache: do not subtract sectors_to_gc for bypassed IO
bcache: correct cache_dirty_target in __update_writeback_rate()
bcache: Correct return value for sysfs attach errors
bcache: fix for gc and write-back race
bcache: fix bch_hprint crash and improve output
Linux 4.9.52
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
|
||
 Minchan Kim
|
39f5677232 |
mm: prevent double decrease of nr_reserved_highatomic
commit 4855e4a7f29d6d10b0b9c84e189c770c9a94e91e upstream.
There is race between page freeing and unreserved highatomic.
CPU 0 CPU 1
free_hot_cold_page
mt = get_pfnblock_migratetype
set_pcppage_migratetype(page, mt)
unreserve_highatomic_pageblock
spin_lock_irqsave(&zone->lock)
move_freepages_block
set_pageblock_migratetype(page)
spin_unlock_irqrestore(&zone->lock)
free_pcppages_bulk
__free_one_page(mt) <- mt is stale
By above race, a page on CPU 0 could go non-highorderatomic free list
since the pageblock's type is changed. By that, unreserve logic of
highorderatomic can decrease reserved count on a same pageblock severak
times and then it will make mismatch between nr_reserved_highatomic and
the number of reserved pageblock.
So, this patch verifies whether the pageblock is highatomic or not and
decrease the count only if the pageblock is highatomic.
Link: http://lkml.kernel.org/r/1476259429-18279-3-git-send-email-minchan@kernel.org
Signed-off-by: Minchan Kim <minchan@kernel.org>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Mel Gorman <mgorman@techsingularity.net>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Sangseok Lee <sangseok.lee@lge.com>
Cc: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Miles Chen <miles.chen@mediatek.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
||
|
Greg Kroah-Hartman
|
f7d2974f34 |
Merge 4.9.50 into android-4.9
Changes in 4.9.50 mtd: nand: mxc: Fix mxc_v1 ooblayout mtd: nand: qcom: fix read failure without complete bootchain mtd: nand: qcom: fix config error for BCH nvme-fabrics: generate spec-compliant UUID NQNs btrfs: resume qgroup rescan on rw remount selftests/x86/fsgsbase: Test selectors 1, 2, and 3 mm/memory.c: fix mem_cgroup_oom_disable() call missing locktorture: Fix potential memory leak with rw lock test ALSA: msnd: Optimize / harden DSP and MIDI loops Bluetooth: Properly check L2CAP config option output buffer length ARM64: dts: marvell: armada-37xx: Fix GIC maintenance interrupt ARM: 8692/1: mm: abort uaccess retries upon fatal signal NFS: Fix 2 use after free issues in the I/O code NFS: Sync the correct byte range during synchronous writes xfs: XFS_IS_REALTIME_INODE() should be false if no rt device present Linux 4.9.50 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> |
||
|
Laurent Dufour
|
3c8381df2a |
mm/memory.c: fix mem_cgroup_oom_disable() call missing
commit de0c799bba2610a8e1e9a50d76a28614520a4cd4 upstream.
Seen while reading the code, in handle_mm_fault(), in the case
arch_vma_access_permitted() is failing the call to
mem_cgroup_oom_disable() is not made.
To fix that, move the call to mem_cgroup_oom_enable() after calling
arch_vma_access_permitted() as it should not have entered the memcg OOM.
Link: http://lkml.kernel.org/r/1504625439-31313-1-git-send-email-ldufour@linux.vnet.ibm.com
Fixes:
|
||
|
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> |
||
 Mel Gorman
|
8cc3acff5f |
mm, madvise: ensure poisoned pages are removed from per-cpu lists
commit c461ad6a63b37ba74632e90c063d14823c884247 upstream. Wendy Wang reported off-list that a RAS HWPOISON-SOFT test case failed and bisected it to the commit |
||
|
Greg Kroah-Hartman
|
a3840b1234 |
Merge 4.9.46 into android-4.9
Changes in 4.9.46
sparc64: remove unnecessary log message
af_key: do not use GFP_KERNEL in atomic contexts
dccp: purge write queue in dccp_destroy_sock()
dccp: defer ccid_hc_tx_delete() at dismantle time
ipv4: fix NULL dereference in free_fib_info_rcu()
net_sched/sfq: update hierarchical backlog when drop packet
net_sched: remove warning from qdisc_hash_add
bpf: fix bpf_trace_printk on 32 bit archs
openvswitch: fix skb_panic due to the incorrect actions attrlen
ptr_ring: use kmalloc_array()
ipv4: better IP_MAX_MTU enforcement
nfp: fix infinite loop on umapping cleanup
sctp: fully initialize the IPv6 address in sctp_v6_to_addr()
tipc: fix use-after-free
ipv6: reset fn->rr_ptr when replacing route
ipv6: repair fib6 tree in failure case
tcp: when rearming RTO, if RTO time is in past then fire RTO ASAP
net/mlx4_core: Enable 4K UAR if SRIOV module parameter is not enabled
irda: do not leak initialized list.dev to userspace
net: sched: fix NULL pointer dereference when action calls some targets
net_sched: fix order of queue length updates in qdisc_replace()
bpf, verifier: add additional patterns to evaluate_reg_imm_alu
bpf: adjust verifier heuristics
bpf, verifier: fix alu ops against map_value{, _adj} register types
bpf: fix mixed signed/unsigned derived min/max value bounds
bpf/verifier: fix min/max handling in BPF_SUB
Input: trackpoint - add new trackpoint firmware ID
Input: elan_i2c - add ELAN0602 ACPI ID to support Lenovo Yoga310
Input: ALPS - fix two-finger scroll breakage in right side on ALPS touchpad
KVM: s390: sthyi: fix sthyi inline assembly
KVM: s390: sthyi: fix specification exception detection
KVM: x86: block guest protection keys unless the host has them enabled
ALSA: usb-audio: Add delay quirk for H650e/Jabra 550a USB headsets
ALSA: core: Fix unexpected error at replacing user TLV
ALSA: hda - Add stereo mic quirk for Lenovo G50-70 (17aa:3978)
ALSA: firewire: fix NULL pointer dereference when releasing uninitialized data of iso-resource
ARCv2: PAE40: Explicitly set MSB counterpart of SLC region ops addresses
mm, shmem: fix handling /sys/kernel/mm/transparent_hugepage/shmem_enabled
i2c: designware: Fix system suspend
mm/madvise.c: fix freeing of locked page with MADV_FREE
fork: fix incorrect fput of ->exe_file causing use-after-free
mm/memblock.c: reversed logic in memblock_discard()
drm: Release driver tracking before making the object available again
drm/atomic: If the atomic check fails, return its value first
drm: rcar-du: Fix crash in encoder failure error path
drm: rcar-du: Fix display timing controller parameter
drm: rcar-du: Fix H/V sync signal polarity configuration
tracing: Call clear_boot_tracer() at lateinit_sync
tracing: Fix kmemleak in tracing_map_array_free()
tracing: Fix freeing of filter in create_filter() when set_str is false
kbuild: linker script do not match C names unless LD_DEAD_CODE_DATA_ELIMINATION is configured
cifs: Fix df output for users with quota limits
cifs: return ENAMETOOLONG for overlong names in cifs_open()/cifs_lookup()
nfsd: Limit end of page list when decoding NFSv4 WRITE
ftrace: Check for null ret_stack on profile function graph entry function
perf/core: Fix group {cpu,task} validation
perf probe: Fix --funcs to show correct symbols for offline module
perf/x86/intel/rapl: Make package handling more robust
timers: Fix excessive granularity of new timers after a nohz idle
x86/mm: Fix use-after-free of ldt_struct
net: sunrpc: svcsock: fix NULL-pointer exception
Revert "leds: handle suspend/resume in heartbeat trigger"
netfilter: nat: fix src map lookup
Bluetooth: hidp: fix possible might sleep error in hidp_session_thread
Bluetooth: cmtp: fix possible might sleep error in cmtp_session
Bluetooth: bnep: fix possible might sleep error in bnep_session
Revert "android: binder: Sanity check at binder ioctl"
binder: use group leader instead of open thread
binder: Use wake up hint for synchronous transactions.
ANDROID: binder: fix proc->tsk check.
iio: imu: adis16480: Fix acceleration scale factor for adis16480
iio: hid-sensor-trigger: Fix the race with user space powering up sensors
staging: rtl8188eu: add RNX-N150NUB support
Clarify (and fix) MAX_LFS_FILESIZE macros
ntb_transport: fix qp count bug
ntb_transport: fix bug calculating num_qps_mw
NTB: ntb_test: fix bug printing ntb_perf results
ntb: no sleep in ntb_async_tx_submit
ntb: ntb_test: ensure the link is up before trying to configure the mws
ntb: transport shouldn't disable link due to bogus values in SPADs
ACPI: ioapic: Clear on-stack resource before using it
ACPI / APEI: Add missing synchronize_rcu() on NOTIFY_SCI removal
ACPI: EC: Fix regression related to wrong ECDT initialization order
powerpc/mm: Ensure cpumask update is ordered
Linux 4.9.46
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
|