======================================
| [ 3632.751392][T19961] dropreason: entered promiscuous mode
| [ 3640.410692][T20011] c0: entered promiscuous mode
| [ 3647.685035][T20058] s0: entered promiscuous mode
| [ 3842.782756][T20219] perf: page allocation failure: order:6, mode:0x40dc0(GFP_KERNEL|__GFP_COMP|__GFP_ZERO), nodemask=(null),cpuset=/,mems_allowed=0
[ 3842.783792][T20219] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 3842.784156][T20219] Call Trace:
[ 3842.784317][T20219]  <TASK>
[3842.784405][T20219] dump_stack_lvl (lib/dump_stack.c:122) 
[3842.784587][T20219] warn_alloc (mm/page_alloc.c:3521) 
[3842.784739][T20219] ? __pfx_warn_alloc (mm/page_alloc.c:3500) 
[3842.784916][T20219] ? __alloc_pages_direct_compact (mm/page_alloc.c:3695) 
[3842.785128][T20219] ? __pfx___alloc_pages_direct_compact (mm/page_alloc.c:3643) 
[3842.785343][T20219] __alloc_pages_slowpath.constprop.0 (mm/page_alloc.c:4443) 
[3842.785559][T20219] ? get_page_from_freelist (mm/page_alloc.c:3198 mm/page_alloc.c:3391) 
[3842.785722][T20219] ? __pfx___alloc_pages_slowpath.constprop.0 (mm/page_alloc.c:4171) 
[3842.785951][T20219] __alloc_pages_noprof (mm/page_alloc.c:4713) 
[3842.786113][T20219] ? __pfx___alloc_pages_noprof (mm/page_alloc.c:4666) 
[3842.786284][T20219] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[3842.786455][T20219] ? v9fs_alloc_rdir_buf.isra.0 (fs/9p/vfs_dir.c:73) 
[3842.786618][T20219] ___kmalloc_large_node (./include/linux/gfp.h:269 ./include/linux/gfp.h:296 mm/slub.c:4103) 
[3842.786791][T20219] ? v9fs_alloc_rdir_buf.isra.0 (fs/9p/vfs_dir.c:73) 
[3842.786953][T20219] __kmalloc_large_node_noprof (./arch/x86/include/asm/bitops.h:417 ./include/asm-generic/getorder.h:46 mm/slub.c:4132) 
[3842.787120][T20219] __kmalloc_noprof (./arch/x86/include/asm/bitops.h:417 ./include/asm-generic/getorder.h:46 mm/slub.c:4148 mm/slub.c:4170) 
[3842.787282][T20219] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[3842.787414][T20219] v9fs_alloc_rdir_buf.isra.0 (fs/9p/vfs_dir.c:73) 
[3842.787595][T20219] v9fs_dir_readdir_dotl (fs/9p/vfs_dir.c:160) 
[3842.787765][T20219] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[3842.787935][T20219] ? __pfx_v9fs_dir_readdir_dotl (fs/9p/vfs_dir.c:148) 
[3842.788140][T20219] ? lock_acquire.part.0 (kernel/locking/lockdep.c:466 kernel/locking/lockdep.c:5761) 
[3842.788305][T20219] ? iterate_dir (fs/readdir.c:101) 
[3842.788479][T20219] ? 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) 
[3842.788649][T20219] ? __pfx_rwsem_read_trylock (kernel/locking/rwsem.c:242) 
[3842.788817][T20219] ? iterate_dir (fs/readdir.c:101) 
[3842.788986][T20219] ? lock_acquire (kernel/locking/lockdep.c:5732) 
[3842.789151][T20219] ? iterate_dir (fs/readdir.c:101) 
[3842.789319][T20219] ? down_read_killable (kernel/locking/rwsem.c:1249 kernel/locking/rwsem.c:1273 kernel/locking/rwsem.c:1551) 
[3842.789488][T20219] ? iterate_dir (fs/readdir.c:101) 
[3842.789655][T20219] ? __pfx_down_read_killable (kernel/locking/rwsem.c:1547) 
[3842.789817][T20219] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5724) 
[3842.789981][T20219] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[3842.790150][T20219] iterate_dir (fs/readdir.c:108) 
[3842.790318][T20219] ovl_iterate (fs/overlayfs/readdir.c:775) 
[3842.790485][T20219] ? wrap_directory_iterator (fs/readdir.c:54) 
[3842.790647][T20219] ? __pfx_ovl_iterate (fs/overlayfs/readdir.c:751) 
[3842.790817][T20219] ? __pfx_ovl_iterate (fs/overlayfs/readdir.c:751) 
[3842.790982][T20219] wrap_directory_iterator (fs/readdir.c:65) 
[3842.791151][T20219] iterate_dir (fs/readdir.c:108) 
[3842.791322][T20219] __x64_sys_getdents64 (fs/readdir.c:408 fs/readdir.c:392 fs/readdir.c:392) 
[3842.791494][T20219] ? __pfx___x64_sys_getdents64 (fs/readdir.c:392) 
[3842.791658][T20219] ? do_user_addr_fault (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./include/linux/mm.h:715 arch/x86/mm/fault.c:1340) 
[3842.791824][T20219] ? __pfx_filldir64 (fs/readdir.c:350) 
[3842.791991][T20219] ? do_user_addr_fault (./include/linux/rcupdate.h:871 ./include/linux/mm.h:715 arch/x86/mm/fault.c:1340) 
[3842.792166][T20219] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[3842.792333][T20219] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3842.792536][T20219] RIP: 0033:0x7ff86d3ec5b7
[ 3842.792708][T20219] 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
[ 3842.793284][T20219] RSP: 002b:00007ffd71cd9cf8 EFLAGS: 00000293 ORIG_RAX: 00000000000000d9
[ 3842.793549][T20219] RAX: ffffffffffffffda RBX: 00007ff86cdd2040 RCX: 00007ff86d3ec5b7
[ 3842.793816][T20219] RDX: 0000000000020000 RSI: 00007ff86cdd2040 RDI: 0000000000000007
[ 3842.794066][T20219] RBP: 00007ff86cdd2014 R08: 00007ff86cdd2010 R09: 0000000000000000
[ 3842.794318][T20219] R10: 0000000000000022 R11: 0000000000000293 R12: ffffffffffffff38


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