======================================
| [ 3918.842473][T19882] dropreason: entered promiscuous mode
| [ 3926.724749][T19933] c0: entered promiscuous mode
| [ 3934.307173][T19980] s0: entered promiscuous mode
| [ 4148.249948][T20141] perf: page allocation failure: order:6, mode:0x40dc0(GFP_KERNEL|__GFP_COMP|__GFP_ZERO), nodemask=(null),cpuset=/,mems_allowed=0
[ 4148.251044][T20141] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 4148.251396][T20141] Call Trace:
[ 4148.251532][T20141]  <TASK>
[4148.251623][T20141] dump_stack_lvl (lib/dump_stack.c:123) 
[4148.251792][T20141] warn_alloc (mm/page_alloc.c:3532) 
[4148.251924][T20141] ? __pfx_warn_alloc (mm/page_alloc.c:3511) 
[4148.252103][T20141] ? __alloc_pages_direct_compact (mm/page_alloc.c:3706) 
[4148.252301][T20141] ? __pfx___alloc_pages_direct_compact (mm/page_alloc.c:3654) 
[4148.252519][T20141] __alloc_pages_slowpath.constprop.0 (mm/page_alloc.c:4465) 
[4148.252730][T20141] ? get_page_from_freelist (mm/page_alloc.c:3215 mm/page_alloc.c:3410) 
[4148.252894][T20141] ? __pfx___alloc_pages_slowpath.constprop.0 (mm/page_alloc.c:4187) 
[4148.253109][T20141] __alloc_pages_noprof (mm/page_alloc.c:4746) 
[4148.253268][T20141] ? __pfx___alloc_pages_noprof (mm/page_alloc.c:4699) 
[4148.253444][T20141] ? 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) 
[4148.253608][T20141] ? validate_chain (./include/linux/hash.h:78 kernel/locking/lockdep.c:3794 kernel/locking/lockdep.c:3817 kernel/locking/lockdep.c:3872) 
[4148.253776][T20141] ? v9fs_alloc_rdir_buf.isra.0 (fs/9p/vfs_dir.c:73) 
[4148.253934][T20141] ___kmalloc_large_node (./include/linux/gfp.h:269 ./include/linux/gfp.h:296 mm/slub.c:4209) 
[4148.254106][T20141] ? v9fs_alloc_rdir_buf.isra.0 (fs/9p/vfs_dir.c:73) 
[4148.254263][T20141] __kmalloc_large_node_noprof (./arch/x86/include/asm/bitops.h:417 ./include/asm-generic/getorder.h:46 mm/slub.c:4238) 
[4148.254422][T20141] __kmalloc_noprof (./arch/x86/include/asm/bitops.h:417 ./include/asm-generic/getorder.h:46 mm/slub.c:4254 mm/slub.c:4276) 
[4148.254580][T20141] ? 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) 
[4148.254745][T20141] v9fs_alloc_rdir_buf.isra.0 (fs/9p/vfs_dir.c:73) 
[4148.254902][T20141] v9fs_dir_readdir_dotl (fs/9p/vfs_dir.c:170) 
[4148.255059][T20141] ? __lock_acquire (kernel/locking/lockdep.c:5202) 
[4148.255229][T20141] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) 
[4148.255387][T20141] ? __pfx_v9fs_dir_readdir_dotl (fs/9p/vfs_dir.c:158) 
[4148.255602][T20141] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5827) 
[4148.255759][T20141] ? iterate_dir (fs/readdir.c:101) 
[4148.255923][T20141] ? 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:256 kernel/locking/rwsem.c:248) 
[4148.256082][T20141] ? __pfx_rwsem_read_trylock (kernel/locking/rwsem.c:249) 
[4148.256249][T20141] ? iterate_dir (fs/readdir.c:101) 
[4148.256407][T20141] ? lock_acquire (kernel/locking/lockdep.c:5798) 
[4148.256567][T20141] ? iterate_dir (fs/readdir.c:101) 
[4148.256732][T20141] ? down_read_killable (kernel/locking/rwsem.c:1247 kernel/locking/rwsem.c:1271 kernel/locking/rwsem.c:1549) 
[4148.256891][T20141] ? iterate_dir (fs/readdir.c:101) 
[4148.257055][T20141] ? __pfx_down_read_killable (kernel/locking/rwsem.c:1545) 
[4148.257213][T20141] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5790) 
[4148.257372][T20141] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[4148.257539][T20141] iterate_dir (fs/readdir.c:108) 
[4148.257702][T20141] ovl_iterate (fs/overlayfs/readdir.c:775) 
[4148.257865][T20141] ? wrap_directory_iterator (fs/readdir.c:54) 
[4148.258021][T20141] ? __pfx_ovl_iterate (fs/overlayfs/readdir.c:751) 
[4148.258185][T20141] ? __pfx_ovl_iterate (fs/overlayfs/readdir.c:751) 
[4148.258344][T20141] wrap_directory_iterator (fs/readdir.c:65) 
[4148.258506][T20141] iterate_dir (fs/readdir.c:108) 
[4148.258670][T20141] __x64_sys_getdents64 (fs/readdir.c:408 fs/readdir.c:392 fs/readdir.c:392) 
[4148.258831][T20141] ? __pfx___x64_sys_getdents64 (fs/readdir.c:392) 
[4148.259003][T20141] ? 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) 
[4148.259162][T20141] ? __pfx_filldir64 (fs/readdir.c:350) 
[4148.259323][T20141] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:729 arch/x86/mm/fault.c:1340) 
[4148.259494][T20141] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[4148.259659][T20141] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4148.259854][T20141] RIP: 0033:0x7f83728b95b7
[ 4148.260021][T20141] 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
[ 4148.260571][T20141] RSP: 002b:00007ffe16c73a38 EFLAGS: 00000293 ORIG_RAX: 00000000000000d9
[ 4148.260822][T20141] RAX: ffffffffffffffda RBX: 00007f837225d040 RCX: 00007f83728b95b7
[ 4148.261087][T20141] RDX: 0000000000020000 RSI: 00007f837225d040 RDI: 0000000000000009
[ 4148.261352][T20141] RBP: 00007f837225d014 R08: 00007f837225d010 R09: 0000000000000000
[ 4148.261586][T20141] R10: 0000000000000022 R11: 0000000000000293 R12: ffffffffffffff38


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