lowmemorykiller: Killing 'syz-executor.5' (5259) (tgid 5257), adj 1000,
   to free 51388kB on behalf of 'syz-executor.2' (2129) because
   cache 704kB is below limit 6144kB for oom_score_adj 0
   Free memory is -1216kB above reserved
INFO: task syz-executor.5:5259 blocked for more than 140 seconds.
      Not tainted 4.4.174+ #17
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.5  D ffff88017540fb08 28992  5259   2121 0x20120004
 ffff88017540fb08 0000000000000002 ffff88017540fb38 ffffffff811e9901
 ffff8801a26a97c0 ffffffff810e1700 ffff8801db61f180 ffff8801db61f1a8
 ffff8801db61e898 ffff8801a92e97c0 ffff8801a26a97c0 ffffed002ea81001
Call Trace:
 [<ffffffff82709b79>] schedule+0x99/0x1d0 kernel/sched/core.c:3355
 [<ffffffff821e4dae>] __lock_sock+0xfe/0x190 net/core/sock.c:2000
 [<ffffffff821e4f36>] lock_sock_nested+0xf6/0x120 net/core/sock.c:2457
 [<ffffffff826d59d5>] lock_sock include/net/sock.h:1497 [inline]
 [<ffffffff826d59d5>] packet_setsockopt+0xfa5/0x26c0 net/packet/af_packet.c:3782
 [<ffffffff822ac3a3>] C_SYSC_setsockopt net/compat.c:388 [inline]
 [<ffffffff822ac3a3>] compat_SyS_setsockopt+0x253/0x720 net/compat.c:368
 [<ffffffff8100603d>] do_syscall_32_irqs_on arch/x86/entry/common.c:330 [inline]
 [<ffffffff8100603d>] do_fast_syscall_32+0x32d/0xa90 arch/x86/entry/common.c:397
 [<ffffffff8271a350>] sysenter_flags_fixed+0xd/0x1a
lowmemorykiller: Killing 'syz-executor.5' (5259) (tgid 5257), adj 1000,
   to free 51388kB on behalf of 'udevd' (584) because
   cache 588kB is below limit 6144kB for oom_score_adj 0
   Free memory is -688kB above reserved
lowmemorykiller: Killing 'syz-executor.5' (5259) (tgid 5257), adj 1000,
   to free 51388kB on behalf of 'syz-executor.4' (5292) because
   cache 588kB is below limit 6144kB for oom_score_adj 0
   Free memory is -688kB above reserved
no locks held by syz-executor.5/5259.
Sending NMI to all CPUs:
NMI backtrace for cpu 0
CPU: 0 PID: 5320 Comm: modprobe Not tainted 4.4.174+ #17
task: ffff880173220000 task.stack: ffff880128a40000
RIP: 0010:[<ffffffff81309601>]  [<ffffffff81309601>] preempt_count arch/x86/include/asm/preempt.h:22 [inline]
RIP: 0010:[<ffffffff81309601>]  [<ffffffff81309601>] check_kcov_mode kernel/kcov.c:66 [inline]
RIP: 0010:[<ffffffff81309601>]  [<ffffffff81309601>] __sanitizer_cov_trace_pc+0x11/0x50 kernel/kcov.c:100
RSP: 0000:ffff880128a472d0  EFLAGS: 00000282
RAX: ffff880173220000 RBX: ffff88019e34c740 RCX: 1ffffffff05f7178
RDX: 0000000000000000 RSI: ffffffff81b0abcc RDI: ffffffff8292c000
RBP: ffff880128a472d0 R08: 0000000000000005 R09: ffff8801732209b0
R10: ffffffff83a2ac60 R11: 0000000000000000 R12: ffff88019e34c740
R13: ffffffff8292bfc0 R14: ffffffff8292c000 R15: ffff88019e34cf18
FS:  00007fd6623ae700(0000) GS:ffff8801db600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000008096e60 CR3: 0000000123186000 CR4: 00000000001606b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffff880128a47310 ffffffff81b0abcc 0000000500000000 ffff88019e34c740
 ffff88019e34c740 dffffc0000000000 ffff88019e34ce98 ffff88019e34cf18
 ffff880128a47320 ffffffff81b0adcc ffff880128a47340 ffffffff8123d925
Call Trace:
 [<ffffffff81b0abcc>] check_preemption_disabled+0x1c/0x200 lib/smp_processor_id.c:13
 [<ffffffff81b0adcc>] debug_smp_processor_id+0x1c/0x20 lib/smp_processor_id.c:56
 [<ffffffff8123d925>] __rcu_is_watching kernel/rcu/tree.c:999 [inline]
 [<ffffffff8123d925>] rcu_is_watching+0x15/0xb0 kernel/rcu/tree.c:1013
 [<ffffffff813c295a>] rcu_read_unlock include/linux/rcupdate.h:913 [inline]
 [<ffffffff813c295a>] find_lock_task_mm+0x17a/0x280 mm/oom_kill.c:116
lowmemorykiller: Killing 'syz-executor.5' (5259) (tgid 5257), adj 1000,
   to free 51388kB on behalf of 'cron' (1973) because
   cache 440kB is below limit 6144kB for oom_score_adj 0
   Free memory is -688kB above reserved
 [<ffffffff8211e7cb>] lowmem_scan+0x45b/0xbf0 drivers/staging/android/lowmemorykiller.c:132
 [<ffffffff813ee8e2>] do_shrink_slab mm/vmscan.c:357 [inline]
 [<ffffffff813ee8e2>] shrink_slab.part.0+0x402/0xb30 mm/vmscan.c:455
 [<ffffffff813f742c>] shrink_slab mm/vmscan.c:425 [inline]
 [<ffffffff813f742c>] shrink_zone+0x4bc/0x610 mm/vmscan.c:2448
 [<ffffffff813f7bef>] shrink_zones mm/vmscan.c:2603 [inline]
 [<ffffffff813f7bef>] do_try_to_free_pages mm/vmscan.c:2653 [inline]
 [<ffffffff813f7bef>] try_to_free_pages+0x66f/0x1260 mm/vmscan.c:2861
 [<ffffffff813d09af>] __perform_reclaim mm/page_alloc.c:2915 [inline]
 [<ffffffff813d09af>] __alloc_pages_direct_reclaim mm/page_alloc.c:2936 [inline]
 [<ffffffff813d09af>] __alloc_pages_slowpath mm/page_alloc.c:3201 [inline]
 [<ffffffff813d09af>] __alloc_pages_nodemask+0x8af/0x14b0 mm/page_alloc.c:3313
 [<ffffffff813dc242>] __alloc_pages include/linux/gfp.h:415 [inline]
 [<ffffffff813dc242>] __alloc_pages_node include/linux/gfp.h:428 [inline]
 [<ffffffff813dc242>] alloc_pages_node include/linux/gfp.h:442 [inline]
 [<ffffffff813dc242>] __page_cache_alloc include/linux/pagemap.h:226 [inline]
 [<ffffffff813dc242>] page_cache_alloc_readahead include/linux/pagemap.h:242 [inline]
 [<ffffffff813dc242>] __do_page_cache_readahead+0x222/0x840 mm/readahead.c:184
 [<ffffffff813bf6de>] ra_submit mm/internal.h:55 [inline]
 [<ffffffff813bf6de>] do_sync_mmap_readahead mm/filemap.c:1917 [inline]
 [<ffffffff813bf6de>] filemap_fault+0x74e/0xc10 mm/filemap.c:1994
 [<ffffffff81665ed2>] ext4_filemap_fault+0x72/0xa0 fs/ext4/inode.c:5558
 [<ffffffff8142e82a>] __do_fault+0x1ca/0x350 mm/memory.c:2822
 [<ffffffff8143b9cc>] do_read_fault mm/memory.c:3012 [inline]
 [<ffffffff8143b9cc>] do_fault mm/memory.c:3177 [inline]
 [<ffffffff8143b9cc>] handle_pte_fault mm/memory.c:3346 [inline]
 [<ffffffff8143b9cc>] __handle_mm_fault mm/memory.c:3474 [inline]
 [<ffffffff8143b9cc>] handle_mm_fault+0x1cfc/0x3140 mm/memory.c:3503
 [<ffffffff810aaa4e>] __do_page_fault+0x28e/0x7f0 arch/x86/mm/fault.c:1243
 [<ffffffff810ab008>] do_page_fault+0x28/0x30 arch/x86/mm/fault.c:1306
 [<ffffffff82719e35>] page_fault+0x25/0x30 arch/x86/entry/entry_64.S:1064
Code: df e8 e4 b8 17 00 e9 ac fe ff ff 4c 89 f7 e8 d7 b8 17 00 e9 42 fe ff ff 66 90 55 48 89 e5 48 8b 75 08 65 48 8b 04 25 80 67 01 00 <65> 8b 15 08 d1 d0 7e 81 e2 00 01 1f 00 75 2b 8b 90 50 12 00 00 
NMI backtrace for cpu 1
CPU: 1 PID: 20 Comm: khungtaskd Not tainted 4.4.174+ #17
task: ffff8801da6f4740 task.stack: ffff8800001d0000
RIP: 0010:[<ffffffff8109b617>]  [<ffffffff8109b617>] _flat_send_IPI_mask arch/x86/kernel/apic/apic_flat_64.c:62 [inline]
RIP: 0010:[<ffffffff8109b617>]  [<ffffffff8109b617>] flat_send_IPI_mask+0xf7/0x1b0 arch/x86/kernel/apic/apic_flat_64.c:69
RSP: 0000:ffff8800001d7c88  EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000c00 RCX: 0000000000000000
RDX: 0000000000000c00 RSI: 0000000000000000 RDI: ffffffffff5fc300
RBP: ffff8800001d7cb8 R08: 0000000000000018 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000246
R13: 0000000003000000 R14: ffffffff82e5f2e0 R15: 0000000000000002
FS:  0000000000000000(0000) GS:ffff8801db700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000080f1c7c CR3: 00000001d0d22000 CR4: 00000000001606b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 0000000000000001 ffffffff82e5f2e0 ffffffff831a6ac0 fffffbfff0634c34
 000000000001b6c0 0000000000000008 ffff8800001d7cd8 ffffffff81092bee
 0000000000000008 ffffffff82924260 ffff8800001d7d30 ffffffff81ab8252
Call Trace:
 [<ffffffff81092bee>] nmi_raise_cpu_backtrace+0x5e/0x80 arch/x86/kernel/apic/hw_nmi.c:33
 [<ffffffff81ab8252>] nmi_trigger_all_cpu_backtrace.cold+0xa1/0xae lib/nmi_backtrace.c:85
 [<ffffffff81092ca4>] arch_trigger_all_cpu_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
 [<ffffffff813b4762>] trigger_all_cpu_backtrace include/linux/nmi.h:44 [inline]
 [<ffffffff813b4762>] check_hung_task kernel/hung_task.c:125 [inline]
 [<ffffffff813b4762>] check_hung_uninterruptible_tasks kernel/hung_task.c:182 [inline]
 [<ffffffff813b4762>] watchdog.cold+0xd3/0xee kernel/hung_task.c:238
 [<ffffffff811342c3>] kthread+0x273/0x310 kernel/kthread.c:211
 [<ffffffff82718fc5>] ret_from_fork+0x55/0x80 arch/x86/entry/entry_64.S:537
Code: 00 c3 5f ff 80 e6 10 75 e1 41 c1 e5 18 44 89 2c 25 10 c3 5f ff 44 89 fa 09 da 80 cf 04 41 83 ff 02 0f 44 d3 89 14 25 00 c3 5f ff <41> f7 c4 00 02 00 00 75 1e 4c 89 e7 57 9d 0f 1f 44 00 00 e8 f1 
lowmemorykiller: Killing 'syz-executor.5' (5259) (tgid 5257), adj 1000,
   to free 51388kB on behalf of 'syz-fuzzer' (2080) because
   cache 652kB is below limit 6144kB for oom_score_adj 0
   Free memory is -1184kB above reserved
lowmemorykiller: Killing 'syz-executor.5' (5259) (tgid 5257), adj 1000,
   to free 51388kB on behalf of 'syz-executor.1' (2134) because
   cache 652kB is below limit 6144kB for oom_score_adj 0
   Free memory is -1184kB above reserved
lowmemorykiller: Killing 'syz-executor.5' (5259) (tgid 5257), adj 1000,
   to free 51388kB on behalf of 'syz-executor.5' (5276) because
   cache 760kB is below limit 6144kB for oom_score_adj 0
   Free memory is -984kB above reserved
lowmemorykiller: Killing 'syz-executor.5' (5259) (tgid 5257), adj 1000,
   to free 51388kB on behalf of 'kworker/u4:13' (25741) because
   cache 760kB is below limit 6144kB for oom_score_adj 0
   Free memory is -984kB above reserved
lowmemorykiller: Killing 'syz-executor.5' (5259) (tgid 5257), adj 1000,
   to free 51388kB on behalf of 'syz-executor.1' (2134) because
   cache 768kB is below limit 6144kB for oom_score_adj 0
   Free memory is -1108kB above reserved
lowmemorykiller: Killing 'syz-executor.5' (5259) (tgid 5257), adj 1000,
   to free 51388kB on behalf of 'udevd' (468) because
   cache 768kB is below limit 6144kB for oom_score_adj 0
   Free memory is -1108kB above reserved
lowmemorykiller: Killing 'syz-executor.5' (5259) (tgid 5257), adj 1000,
   to free 51388kB on behalf of 'kworker/u4:10' (5328) because
   cache 544kB is below limit 6144kB for oom_score_adj 0
   Free memory is -1068kB above reserved
lowmemorykiller: Killing 'syz-executor.5' (5259) (tgid 5257), adj 1000,
   to free 51388kB on behalf of 'udevd' (584) because
   cache 544kB is below limit 6144kB for oom_score_adj 0
   Free memory is -1068kB above reserved