lowmemorykiller: Killing 'syz-executor.3' (8557) (tgid 8557), adj 1000,
   to free 35976kB on behalf of 'syz-executor.3' (15930) because
   cache 58624kB is below limit 65536kB for oom_score_adj 12
   Free memory is -12028kB above reserved
BUG: sleeping function called from invalid context at kernel/fork.c:905
in_atomic(): 0, irqs_disabled(): 0, pid: 15930, name: syz-executor.3
2 locks held by syz-executor.3/15930:
 #0:  (shrinker_rwsem){++++..}, at: [<00000000ba5a1ff0>] shrink_slab.part.0+0xb2/0xa20 mm/vmscan.c:472
 #1:  (rcu_read_lock){......}, at: [<00000000ac0edf4d>] lowmem_scan+0x242/0xb50 drivers/staging/android/lowmemorykiller.c:272
Preemption disabled at:
[<00000000fc507ac5>] spin_lock include/linux/spinlock.h:302 [inline]
[<00000000fc507ac5>] task_lock include/linux/sched.h:3217 [inline]
[<00000000fc507ac5>] get_task_mm+0x20/0xc0 kernel/fork.c:1012
CPU: 0 PID: 15930 Comm: syz-executor.3 Not tainted 4.9.189+ #22
 ffff8801a901f408 ffffffff81b65c01 0000000000000000 0000000000000001
 ffff88019d854740 ffffffff810d1010 ffff88019d854740 ffff8801a901f440
 ffffffff814018f3 ffff88019d854740 ffffffff82a39fc0 0000000000000389
Call Trace:
 [<00000000894ca725>] __dump_stack lib/dump_stack.c:15 [inline]
 [<00000000894ca725>] dump_stack+0xc1/0x120 lib/dump_stack.c:51
 [<0000000080752dda>] ___might_sleep.cold+0x1c1/0x1fa kernel/sched/core.c:8004
 [<00000000e9691196>] __might_sleep+0x95/0x1a0 kernel/sched/core.c:7961
 [<00000000df894df9>] mmput+0x28/0x370 kernel/fork.c:905
 [<0000000026ac9a72>] handle_lmk_event+0xea/0x8a0 drivers/staging/android/lowmemorykiller.c:111
 [<000000001502d466>] lowmem_scan+0x695/0xb50 drivers/staging/android/lowmemorykiller.c:345
 [<00000000c84028c2>] do_shrink_slab mm/vmscan.c:399 [inline]
 [<00000000c84028c2>] shrink_slab.part.0+0x3cf/0xa20 mm/vmscan.c:502
 [<00000000333b6217>] shrink_slab mm/vmscan.c:466 [inline]
 [<00000000333b6217>] shrink_node+0x1ed/0x750 mm/vmscan.c:2604
 [<00000000c24ff877>] shrink_zones mm/vmscan.c:2751 [inline]
 [<00000000c24ff877>] do_try_to_free_pages mm/vmscan.c:2793 [inline]
 [<00000000c24ff877>] try_to_free_pages+0x397/0xbd0 mm/vmscan.c:3004
 [<00000000bc8730d3>] __perform_reclaim mm/page_alloc.c:3332 [inline]
 [<00000000bc8730d3>] __alloc_pages_direct_reclaim mm/page_alloc.c:3354 [inline]
 [<00000000bc8730d3>] __alloc_pages_slowpath mm/page_alloc.c:3704 [inline]
 [<00000000bc8730d3>] __alloc_pages_nodemask+0x930/0x1a80 mm/page_alloc.c:3861
 [<0000000091245ee6>] __alloc_pages include/linux/gfp.h:433 [inline]
 [<0000000091245ee6>] __alloc_pages_node include/linux/gfp.h:446 [inline]
 [<0000000091245ee6>] alloc_pages_node include/linux/gfp.h:460 [inline]
 [<0000000091245ee6>] __vmalloc_area_node mm/vmalloc.c:1648 [inline]
 [<0000000091245ee6>] __vmalloc_node_range+0x25b/0x610 mm/vmalloc.c:1706
 [<00000000c7046e71>] __vmalloc_node mm/vmalloc.c:1749 [inline]
 [<00000000c7046e71>] __vmalloc_node_flags mm/vmalloc.c:1763 [inline]
 [<00000000c7046e71>] vmalloc+0x5c/0x70 mm/vmalloc.c:1778
 [<00000000825c5a29>] xt_alloc_table_info+0xc8/0x100 net/netfilter/x_tables.c:997
 [<000000001f24a7e6>] do_replace net/ipv6/netfilter/ip6_tables.c:1175 [inline]
 [<000000001f24a7e6>] do_ip6t_set_ctl+0x231/0x480 net/ipv6/netfilter/ip6_tables.c:1712
 [<00000000ec99164b>] nf_sockopt net/netfilter/nf_sockopt.c:105 [inline]
 [<00000000ec99164b>] nf_setsockopt+0x6d/0xc0 net/netfilter/nf_sockopt.c:114
 [<00000000e756cb0f>] ipv6_setsockopt net/ipv6/ipv6_sockglue.c:922 [inline]
 [<00000000e756cb0f>] ipv6_setsockopt+0x10b/0x140 net/ipv6/ipv6_sockglue.c:906
 [<000000001f7623bf>] tcp_setsockopt net/ipv4/tcp.c:2759 [inline]
 [<000000001f7623bf>] tcp_setsockopt+0x8a/0xe0 net/ipv4/tcp.c:2753
 [<000000008c1da150>] sock_common_setsockopt+0x9a/0xe0 net/core/sock.c:2710
 [<0000000041187ec1>] SYSC_setsockopt net/socket.c:1786 [inline]
 [<0000000041187ec1>] SyS_setsockopt+0x159/0x240 net/socket.c:1765
 [<0000000009b28c2e>] do_syscall_64+0x1ad/0x5c0 arch/x86/entry/common.c:288
 [<00000000ea0ad0e7>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
lowmemorykiller: Killing 'syz-executor.3' (13552) (tgid 13552), adj 1000,
   to free 35968kB on behalf of 'kswapd0' (33) because
   cache 54424kB is below limit 65536kB for oom_score_adj 12
   Free memory is -12468kB above reserved
lowmemorykiller: Killing 'syz-executor.3' (13592) (tgid 13592), adj 1000,
   to free 35968kB on behalf of 'kswapd0' (33) because
   cache 54424kB is below limit 65536kB for oom_score_adj 12
   Free memory is -13172kB above reserved
lowmemorykiller: Killing 'syz-executor.3' (13707) (tgid 13707), adj 1000,
   to free 35968kB on behalf of 'syz-executor.3' (15930) because
   cache 53824kB is below limit 65536kB for oom_score_adj 12
   Free memory is -13120kB above reserved