======================================
| [ 3535.720261][T17888] c0: entered promiscuous mode
| [ 3542.152948][T17935] s0: entered promiscuous mode
| [ 3727.704338][T18088] perf (18088) used greatest stack depth: 22256 bytes left
| [ 3730.434403][T18096] perf: page allocation failure: order:6, mode:0x40dc0(GFP_KERNEL|__GFP_COMP|__GFP_ZERO), nodemask=(null),cpuset=/,mems_allowed=0
[ 3730.435502][T18096] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 3730.435856][T18096] Call Trace:
[ 3730.435980][T18096]  <TASK>
[3730.436065][T18096] dump_stack_lvl (lib/dump_stack.c:117) 
[3730.436234][T18096] warn_alloc (mm/page_alloc.c:3504) 
[3730.436364][T18096] ? __pfx_warn_alloc (mm/page_alloc.c:3483) 
[3730.436572][T18096] ? __alloc_pages_direct_compact (mm/page_alloc.c:3678) 
[3730.436770][T18096] ? __pfx___alloc_pages_direct_compact (mm/page_alloc.c:3626) 
[3730.436975][T18096] __alloc_pages_slowpath.constprop.0 (mm/page_alloc.c:4426) 
[3730.437174][T18096] ? get_page_from_freelist (mm/page_alloc.c:3181 mm/page_alloc.c:3374) 
[3730.437329][T18096] ? __pfx___alloc_pages_slowpath.constprop.0 (mm/page_alloc.c:4154) 
[3730.437533][T18096] __alloc_pages_noprof (mm/page_alloc.c:4696) 
[3730.437692][T18096] ? __pfx___alloc_pages_noprof (mm/page_alloc.c:4649) 
[3730.437858][T18096] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[3730.438019][T18096] ? v9fs_alloc_rdir_buf.isra.0 (fs/9p/vfs_dir.c:73) 
[3730.438174][T18096] ___kmalloc_large_node (./include/linux/gfp.h:269 ./include/linux/gfp.h:296 mm/slub.c:4094) 
[3730.438335][T18096] ? v9fs_alloc_rdir_buf.isra.0 (fs/9p/vfs_dir.c:73) 
[3730.438488][T18096] __kmalloc_large_node_noprof (./arch/x86/include/asm/bitops.h:417 ./include/asm-generic/getorder.h:46 mm/slub.c:4123) 
[3730.438650][T18096] __kmalloc_noprof (./arch/x86/include/asm/bitops.h:417 ./include/asm-generic/getorder.h:46 mm/slub.c:4139 mm/slub.c:4161) 
[3730.438805][T18096] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[3730.438930][T18096] v9fs_alloc_rdir_buf.isra.0 (fs/9p/vfs_dir.c:73) 
[3730.439092][T18096] v9fs_dir_readdir_dotl (fs/9p/vfs_dir.c:160) 
[3730.439255][T18096] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[3730.439415][T18096] ? __pfx_v9fs_dir_readdir_dotl (fs/9p/vfs_dir.c:148) 
[3730.439608][T18096] ? lock_acquire.part.0 (kernel/locking/lockdep.c:466 kernel/locking/lockdep.c:5761) 
[3730.439771][T18096] ? iterate_dir (fs/readdir.c:101) 
[3730.439937][T18096] ? 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) 
[3730.440096][T18096] ? __pfx_rwsem_read_trylock (kernel/locking/rwsem.c:242) 
[3730.440256][T18096] ? iterate_dir (fs/readdir.c:101) 
[3730.440409][T18096] ? lock_acquire (kernel/locking/lockdep.c:5732) 
[3730.440560][T18096] ? iterate_dir (fs/readdir.c:101) 
[3730.440721][T18096] ? down_read_killable (kernel/locking/rwsem.c:1249 kernel/locking/rwsem.c:1273 kernel/locking/rwsem.c:1551) 
[3730.440878][T18096] ? iterate_dir (fs/readdir.c:101) 
[3730.441038][T18096] ? __pfx_down_read_killable (kernel/locking/rwsem.c:1547) 
[3730.441196][T18096] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5724) 
[3730.441351][T18096] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[3730.441514][T18096] iterate_dir (fs/readdir.c:108) 
[3730.441680][T18096] ovl_iterate (fs/overlayfs/readdir.c:775) 
[3730.441838][T18096] ? wrap_directory_iterator (fs/readdir.c:54) 
[3730.441994][T18096] ? __pfx_ovl_iterate (fs/overlayfs/readdir.c:751) 
[3730.442156][T18096] ? __pfx_ovl_iterate (fs/overlayfs/readdir.c:751) 
[3730.442314][T18096] wrap_directory_iterator (fs/readdir.c:65) 
[3730.442469][T18096] iterate_dir (fs/readdir.c:108) 
[3730.442631][T18096] __x64_sys_getdents64 (fs/readdir.c:408 fs/readdir.c:392 fs/readdir.c:392) 
[3730.442788][T18096] ? __pfx___x64_sys_getdents64 (fs/readdir.c:392) 
[3730.442945][T18096] ? do_user_addr_fault (./include/linux/rcupdate.h:337 ./include/linux/rcupdate.h:870 ./include/linux/mm.h:708 arch/x86/mm/fault.c:1340) 
[3730.443109][T18096] ? __pfx_filldir64 (fs/readdir.c:350) 
[3730.443269][T18096] ? do_user_addr_fault (./include/linux/rcupdate.h:872 ./include/linux/mm.h:708 arch/x86/mm/fault.c:1340) 
[3730.443436][T18096] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[3730.443597][T18096] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3730.443795][T18096] RIP: 0033:0x7f8046d1d5b7
[ 3730.443965][T18096] 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
[ 3730.444511][T18096] RSP: 002b:00007fffdb677908 EFLAGS: 00000293 ORIG_RAX: 00000000000000d9
[ 3730.444747][T18096] RAX: ffffffffffffffda RBX: 00007f8046703040 RCX: 00007f8046d1d5b7
[ 3730.444998][T18096] RDX: 0000000000020000 RSI: 00007f8046703040 RDI: 0000000000000007
[ 3730.445235][T18096] RBP: 00007f8046703014 R08: 00007f8046703010 R09: 0000000000000000
[ 3730.445472][T18096] R10: 0000000000000022 R11: 0000000000000293 R12: ffffffffffffff38


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