======================================
| [ 3828.342908][T19921] dropreason: entered promiscuous mode
| [ 3836.404651][T19971] c0: entered promiscuous mode
| [ 3844.079652][T20018] s0: entered promiscuous mode
| [ 4049.621485][T20181] perf: page allocation failure: order:6, mode:0x40dc0(GFP_KERNEL|__GFP_COMP|__GFP_ZERO), nodemask=(null),cpuset=/,mems_allowed=0
[ 4049.622735][T20181] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 4049.623214][T20181] Call Trace:
[ 4049.623360][T20181]  <TASK>
[4049.623460][T20181] dump_stack_lvl (lib/dump_stack.c:123) 
[4049.623653][T20181] warn_alloc (mm/page_alloc.c:3532) 
[4049.623799][T20181] ? __pfx_warn_alloc (mm/page_alloc.c:3511) 
[4049.623998][T20181] ? __alloc_pages_direct_compact (mm/page_alloc.c:3706) 
[4049.624231][T20181] ? __pfx___alloc_pages_direct_compact (mm/page_alloc.c:3654) 
[4049.624471][T20181] __alloc_pages_slowpath.constprop.0 (mm/page_alloc.c:4465) 
[4049.624707][T20181] ? get_page_from_freelist (mm/page_alloc.c:3215 mm/page_alloc.c:3410) 
[4049.624891][T20181] ? __pfx___alloc_pages_slowpath.constprop.0 (mm/page_alloc.c:4187) 
[4049.625136][T20181] __alloc_pages_noprof (mm/page_alloc.c:4746) 
[4049.625321][T20181] ? __pfx___alloc_pages_noprof (mm/page_alloc.c:4699) 
[4049.625510][T20181] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[4049.625700][T20181] ? __kasan_unpoison_pages (mm/kasan/common.c:136) 
[4049.625891][T20181] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[4049.626074][T20181] ? validate_chain (./include/linux/hash.h:78 kernel/locking/lockdep.c:3791 kernel/locking/lockdep.c:3814 kernel/locking/lockdep.c:3869) 
[4049.626265][T20181] ? v9fs_alloc_rdir_buf.isra.0 (fs/9p/vfs_dir.c:73) 
[4049.626449][T20181] ___kmalloc_large_node (./include/linux/gfp.h:269 ./include/linux/gfp.h:296 mm/slub.c:4210) 
[4049.626631][T20181] ? register_lock_class (kernel/locking/lockdep.c:1290 (discriminator 13)) 
[4049.626817][T20181] ? v9fs_alloc_rdir_buf.isra.0 (fs/9p/vfs_dir.c:73) 
[4049.626999][T20181] __kmalloc_large_node_noprof (./arch/x86/include/asm/bitops.h:417 ./include/asm-generic/getorder.h:46 mm/slub.c:4239) 
[4049.627184][T20181] __kmalloc_noprof (./arch/x86/include/asm/bitops.h:417 ./include/asm-generic/getorder.h:46 mm/slub.c:4255 mm/slub.c:4277) 
[4049.627370][T20181] ? mark_lock (kernel/locking/lockdep.c:4700 (discriminator 3)) 
[4049.627514][T20181] v9fs_alloc_rdir_buf.isra.0 (fs/9p/vfs_dir.c:73) 
[4049.627698][T20181] v9fs_dir_readdir_dotl (fs/9p/vfs_dir.c:160) 
[4049.627889][T20181] ? __pfx_validate_chain (kernel/locking/lockdep.c:3857) 
[4049.628072][T20181] ? __pfx_v9fs_dir_readdir_dotl (fs/9p/vfs_dir.c:148) 
[4049.628303][T20181] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5824) 
[4049.628487][T20181] ? iterate_dir (fs/readdir.c:101) 
[4049.628679][T20181] ? rwsem_read_trylock (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2629 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3224 kernel/locking/rwsem.c:176 kernel/locking/rwsem.c:181 kernel/locking/rwsem.c:249 kernel/locking/rwsem.c:241) 
[4049.628862][T20181] ? __pfx_rwsem_read_trylock (kernel/locking/rwsem.c:242) 
[4049.629051][T20181] ? iterate_dir (fs/readdir.c:101) 
[4049.629238][T20181] ? lock_acquire (kernel/locking/lockdep.c:5795) 
[4049.629423][T20181] ? iterate_dir (fs/readdir.c:101) 
[4049.629610][T20181] ? down_read_killable (kernel/locking/rwsem.c:1249 kernel/locking/rwsem.c:1273 kernel/locking/rwsem.c:1551) 
[4049.629797][T20181] ? iterate_dir (fs/readdir.c:101) 
[4049.630000][T20181] ? __pfx_down_read_killable (kernel/locking/rwsem.c:1547) 
[4049.630184][T20181] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5787) 
[4049.630367][T20181] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[4049.630556][T20181] iterate_dir (fs/readdir.c:108) 
[4049.630742][T20181] ovl_iterate (fs/overlayfs/readdir.c:775) 
[4049.630928][T20181] ? wrap_directory_iterator (fs/readdir.c:54) 
[4049.631109][T20181] ? __pfx_ovl_iterate (fs/overlayfs/readdir.c:751) 
[4049.631295][T20181] ? __pfx_ovl_iterate (fs/overlayfs/readdir.c:751) 
[4049.631483][T20181] wrap_directory_iterator (fs/readdir.c:65) 
[4049.631668][T20181] iterate_dir (fs/readdir.c:108) 
[4049.631859][T20181] __x64_sys_getdents64 (fs/readdir.c:408 fs/readdir.c:392 fs/readdir.c:392) 
[4049.632043][T20181] ? __pfx___x64_sys_getdents64 (fs/readdir.c:392) 
[4049.632225][T20181] ? do_user_addr_fault (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/linux/mm.h:729 arch/x86/mm/fault.c:1340) 
[4049.632408][T20181] ? __pfx_filldir64 (fs/readdir.c:350) 
[4049.632594][T20181] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:729 arch/x86/mm/fault.c:1340) 
[4049.632783][T20181] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[4049.632984][T20181] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4049.633211][T20181] RIP: 0033:0x7ff6cf27c5b7
[ 4049.633408][T20181] Code: 80 f8 ff 4c 89 e0 5b 5d 41 5c c3 0f 1f 84 00 00 00 00 00 f3 0f 1e fa b8 ff ff ff 7f 48 39 c2 48 0f 47 d0 b8 d9 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 8b 15 19 48 0e 00 f7 d8 64 89 02 48
All code
========
   0:	80 f8 ff             	cmp    $0xff,%al
   3:	4c 89 e0             	mov    %r12,%rax
   6:	5b                   	pop    %rbx
   7:	5d                   	pop    %rbp
   8:	41 5c                	pop    %r12
   a:	c3                   	ret
   b:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
  12:	00 
  13:	f3 0f 1e fa          	endbr64
  17:	b8 ff ff ff 7f       	mov    $0x7fffffff,%eax
  1c:	48 39 c2             	cmp    %rax,%rdx
  1f:	48 0f 47 d0          	cmova  %rax,%rdx
  23:	b8 d9 00 00 00       	mov    $0xd9,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 01                	ja     0x33
  32:	c3                   	ret
  33:	48 8b 15 19 48 0e 00 	mov    0xe4819(%rip),%rdx        # 0xe4853
  3a:	f7 d8                	neg    %eax
  3c:	64 89 02             	mov    %eax,%fs:(%rdx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 01                	ja     0x9
   8:	c3                   	ret
   9:	48 8b 15 19 48 0e 00 	mov    0xe4819(%rip),%rdx        # 0xe4829
  10:	f7 d8                	neg    %eax
  12:	64 89 02             	mov    %eax,%fs:(%rdx)
  15:	48                   	rex.W
[ 4049.634043][T20181] RSP: 002b:00007ffd23b1b938 EFLAGS: 00000293 ORIG_RAX: 00000000000000d9
[ 4049.634328][T20181] RAX: ffffffffffffffda RBX: 000000000b88b1d0 RCX: 00007ff6cf27c5b7
[ 4049.634602][T20181] RDX: 0000000000020000 RSI: 000000000b88b1d0 RDI: 000000000000000a
[ 4049.634877][T20181] RBP: 000000000b88b1a4 R08: 000000000b88b1a0 R09: 0000000000000001
[ 4049.635158][T20181] R10: 0000000000000fff R11: 0000000000000293 R12: ffffffffffffff38


Finger prints:
warn_alloc:__alloc_pages_noprof:___kmalloc_large_node:__kmalloc_large_node_noprof:__kmalloc_noprof