lowmemorykiller: Killing 'syz-executor.2' (11242) (tgid 11237), adj 1000,
   to free 35992kB on behalf of 'kswapd0' (33) because
   cache 59560kB is below limit 65536kB for oom_score_adj 12
   Free memory is 7588kB above reserved
=================================
[ INFO: inconsistent lock state ]
4.9.194+ #0 Not tainted
---------------------------------
inconsistent {RECLAIM_FS-ON-W} -> {IN-RECLAIM_FS-R} usage.
kswapd0/33 [HC0[0]:SC0[0]:HE1:SE1] takes:
 (&mm->mmap_sem){+++++?}, at: [<000000001f85cce0>] get_cmdline+0xa3/0x2d0 mm/util.c:641
  mark_held_locks+0xb1/0x100 kernel/locking/lockdep.c:2660
  __lockdep_trace_alloc kernel/locking/lockdep.c:2882 [inline]
  lockdep_trace_alloc+0x18c/0x2b0 kernel/locking/lockdep.c:2897
  __alloc_pages_nodemask+0x143/0x1a80 mm/page_alloc.c:3803
  __alloc_pages include/linux/gfp.h:433 [inline]
  __alloc_pages_node include/linux/gfp.h:446 [inline]
  alloc_pages_node include/linux/gfp.h:460 [inline]
  pmd_alloc_one arch/x86/include/asm/pgalloc.h:88 [inline]
  __pmd_alloc+0x4a/0x330 mm/memory.c:3742
  pmd_alloc include/linux/mm.h:1625 [inline]
  alloc_new_pmd mm/mremap.c:64 [inline]
  move_page_tables+0xadb/0xd60 mm/mremap.c:212
  shift_arg_pages+0x1ae/0x470 fs/exec.c:642
  setup_arg_pages+0x60d/0x7c0 fs/exec.c:754
  load_elf_binary+0xa84/0x4a90 fs/binfmt_elf.c:860
  search_binary_handler fs/exec.c:1621 [inline]
  search_binary_handler+0x14f/0x700 fs/exec.c:1599
  exec_binprm fs/exec.c:1663 [inline]
  do_execveat_common.isra.0+0xf81/0x1db0 fs/exec.c:1785
  do_execve+0x3a/0x50 fs/exec.c:1829
  run_init_process+0x33/0x37 init/main.c:904
  try_to_run_init_process+0x18/0x48 init/main.c:913
  kernel_init+0xf2/0x163 init/main.c:984
  ret_from_fork+0x5c/0x70 arch/x86/entry/entry_64.S:375
irq event stamp: 158193
hardirqs last  enabled at (158193): [<000000003f44221b>] vprintk_emit+0x25c/0x6f0 kernel/printk/printk.c:1897
hardirqs last disabled at (158192): [<0000000021e775bc>] vprintk_emit+0x6d/0x6f0 kernel/printk/printk.c:1801
softirqs last  enabled at (157252): [<000000007ca10d23>] __do_softirq+0x474/0x964 kernel/softirq.c:314
softirqs last disabled at (157235): [<00000000e8fc7337>] invoke_softirq kernel/softirq.c:368 [inline]
softirqs last disabled at (157235): [<00000000e8fc7337>] irq_exit+0x119/0x160 kernel/softirq.c:409

other info that might help us debug this:
 Possible unsafe locking scenario:

       CPU0
       ----
  lock(&mm->mmap_sem);
  <Interrupt>
    lock(&mm->mmap_sem);

 *** DEADLOCK ***

1 lock held by kswapd0/33:
 #0:  (shrinker_rwsem){++++..}, at: [<0000000024db5ae5>] shrink_slab.part.0+0xb2/0xa20 mm/vmscan.c:472

stack backtrace:
CPU: 0 PID: 33 Comm: kswapd0 Not tainted 4.9.194+ #0
 ffff8801d841f420 ffffffff81b67001 00000000000000f0 ffff8801d8410000
 ffffffff83cb0b40 ffff8801d84108f8 ffffffff84252000 ffff8801d841f498
 ffffffff81408710 0000000000000000 ffffffff00000001 0000000000000001
Call Trace:
 [<00000000c089cf00>] __dump_stack lib/dump_stack.c:15 [inline]
 [<00000000c089cf00>] dump_stack+0xc1/0x120 lib/dump_stack.c:51
 [<00000000071513ff>] print_usage_bug kernel/locking/lockdep.c:2387 [inline]
 [<00000000071513ff>] print_usage_bug.cold+0x452/0x5a2 kernel/locking/lockdep.c:2354
 [<00000000adef0b2b>] valid_state kernel/locking/lockdep.c:2400 [inline]
 [<00000000adef0b2b>] mark_lock_irq kernel/locking/lockdep.c:2602 [inline]
 [<00000000adef0b2b>] mark_lock+0x6c7/0x12e0 kernel/locking/lockdep.c:3065
 [<000000001bcf9efb>] mark_irqflags kernel/locking/lockdep.c:2958 [inline]
 [<000000001bcf9efb>] __lock_acquire+0x5be/0x4390 kernel/locking/lockdep.c:3302
 [<000000007a80af77>] lock_acquire+0x133/0x3d0 kernel/locking/lockdep.c:3756
 [<000000004b2348b8>] down_read+0x44/0xb0 kernel/locking/rwsem.c:22
 [<000000001f85cce0>] get_cmdline+0xa3/0x2d0 mm/util.c:641
 [<00000000790747ef>] handle_lmk_event+0x169/0x920 drivers/staging/android/lowmemorykiller.c:116
 [<00000000b5dc4766>] lowmem_scan+0x6f3/0xb70 drivers/staging/android/lowmemorykiller.c:354
 [<000000002a4fedd3>] do_shrink_slab mm/vmscan.c:399 [inline]
 [<000000002a4fedd3>] shrink_slab.part.0+0x3cf/0xa20 mm/vmscan.c:502
 [<000000003650e18d>] shrink_slab mm/vmscan.c:466 [inline]
 [<000000003650e18d>] shrink_node+0x1ed/0x750 mm/vmscan.c:2604
 [<00000000b5badc01>] kswapd_shrink_node mm/vmscan.c:3209 [inline]
 [<00000000b5badc01>] balance_pgdat mm/vmscan.c:3329 [inline]
 [<00000000b5badc01>] kswapd+0x7f8/0x13b0 mm/vmscan.c:3523
 [<0000000022348152>] kthread+0x278/0x310 kernel/kthread.c:211
 [<000000001a778aff>] ret_from_fork+0x5c/0x70 arch/x86/entry/entry_64.S:375
oom_reaper: reaped process 11255 (syz-executor.2), now anon-rss:0kB, file-rss:12kB, shmem-rss:0kB
syz-executor.2: vmalloc: allocation failure, allocated 2830839808 of 3029590016 bytes, mode:0x24000c2(GFP_KERNEL|__GFP_HIGHMEM)
CPU: 1 PID: 11255 Comm: syz-executor.2 Not tainted 4.9.194+ #0
 ffff8801d68afa08 ffffffff81b67001 1ffff1003ad15f43 dffffc0000000000
 ffffffff82aab480 0000000000000000 0000000000400000 ffff8801d68afb30
 ffffffff815080fc 0000000041b58ab3 ffffffff82e3bc80 ffffffff81431d00
Call Trace:
 [<00000000c089cf00>] __dump_stack lib/dump_stack.c:15 [inline]
 [<00000000c089cf00>] dump_stack+0xc1/0x120 lib/dump_stack.c:51
 [<00000000d347fcd3>] warn_alloc.cold+0x76/0x93 mm/page_alloc.c:3069
 [<00000000278bc635>] __vmalloc_area_node mm/vmalloc.c:1665 [inline]
 [<00000000278bc635>] __vmalloc_node_range+0x404/0x610 mm/vmalloc.c:1706
 [<0000000030582afa>] __vmalloc_node mm/vmalloc.c:1755 [inline]
 [<0000000030582afa>] __vmalloc_node_flags mm/vmalloc.c:1769 [inline]
 [<0000000030582afa>] vmalloc+0x5c/0x70 mm/vmalloc.c:1784
 [<00000000bc7e2249>] xt_alloc_table_info+0xc8/0x100 net/netfilter/x_tables.c:997
 [<0000000096a7da6e>] do_replace net/ipv6/netfilter/ip6_tables.c:1175 [inline]
 [<0000000096a7da6e>] do_ip6t_set_ctl+0x231/0x480 net/ipv6/netfilter/ip6_tables.c:1712
 [<00000000d5770888>] nf_sockopt net/netfilter/nf_sockopt.c:105 [inline]
 [<00000000d5770888>] nf_setsockopt+0x6d/0xc0 net/netfilter/nf_sockopt.c:114
 [<00000000b48f3d23>] ipv6_setsockopt net/ipv6/ipv6_sockglue.c:922 [inline]
 [<00000000b48f3d23>] ipv6_setsockopt+0x10b/0x140 net/ipv6/ipv6_sockglue.c:906
 [<00000000daf7a8d2>] tcp_setsockopt net/ipv4/tcp.c:2759 [inline]
 [<00000000daf7a8d2>] tcp_setsockopt+0x8a/0xe0 net/ipv4/tcp.c:2753
 [<00000000c6f703fd>] sock_common_setsockopt+0x9a/0xe0 net/core/sock.c:2710
 [<00000000c007509d>] SYSC_setsockopt net/socket.c:1786 [inline]
 [<00000000c007509d>] SyS_setsockopt+0x159/0x240 net/socket.c:1765
 [<00000000e11cf5cb>] do_syscall_64+0x1ad/0x5c0 arch/x86/entry/common.c:288
 [<00000000dd8c7eaf>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Mem-Info:
active_anon:84029 inactive_anon:332 isolated_anon:0
 active_file:10 inactive_file:18 isolated_file:16
 unevictable:0 dirty:2 writeback:26 unstable:0
 slab_reclaimable:5457 slab_unreclaimable:61058
 mapped:52266 shmem:341 pagetables:1816 bounce:0
 free:409 free_pcp:68 free_cma:0
Node 0 active_anon:336116kB inactive_anon:1328kB active_file:40kB inactive_file:72kB unevictable:0kB isolated(anon):0kB isolated(file):64kB mapped:209064kB dirty:8kB writeback:104kB shmem:1364kB writeback_tmp:0kB unstable:0kB pages_scanned:12 all_unreclaimable? no
DMA32 free:36kB min:4696kB low:7712kB high:10728kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3145324kB managed:3020092kB mlocked:0kB slab_reclaimable:0kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:28kB bounce:0kB free_pcp:108kB local_pcp:0kB free_cma:0kB
Normal free:1600kB min:5580kB low:9168kB high:12756kB active_anon:336116kB inactive_anon:1328kB active_file:40kB inactive_file:72kB unevictable:0kB writepending:112kB present:4718592kB managed:3589312kB mlocked:0kB slab_reclaimable:21828kB slab_unreclaimable:244232kB kernel_stack:5568kB pagetables:7236kB bounce:0kB free_pcp:164kB local_pcp:164kB free_cma:0kB
DMA32: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 0kB
0 pages in swap cache
Swap cache stats: add 0, delete 0, find 0/0
Free swap  = 0kB
Total swap = 0kB
1965979 pages RAM
0 pages HighMem/MovableOnly
313628 pages reserved
lowmemorykiller: Killing 'syz-executor.4' (8918) (tgid 8918), adj 1000,
   to free 34996kB on behalf of 'kswapd0' (33) because
   cache 360kB is below limit 6144kB for oom_score_adj 0
   Free memory is -35868kB above reserved
netlink: 8 bytes leftover after parsing attributes in process `syz-executor.5'.
BUG: Bad rss-counter state mm:0000000099e02217 idx:0 val:3
netlink: 8 bytes leftover after parsing attributes in process `syz-executor.5'.
netlink: 8 bytes leftover after parsing attributes in process `syz-executor.5'.
netlink: 8 bytes leftover after parsing attributes in process `syz-executor.5'.
netlink: 8 bytes leftover after parsing attributes in process `syz-executor.5'.
netlink: 8 bytes leftover after parsing attributes in process `syz-executor.5'.
netlink: 8 bytes leftover after parsing attributes in process `syz-executor.5'.
netlink: 8 bytes leftover after parsing attributes in process `syz-executor.5'.
netlink: 8 bytes leftover after parsing attributes in process `syz-executor.5'.
netlink: 8 bytes leftover after parsing attributes in process `syz-executor.5'.
netlink: 8 bytes leftover after parsing attributes in process `syz-executor.5'.