======================================
| [ 3521.835518][T17865] dropreason: entered promiscuous mode
| [ 3528.603131][T17916] c0: entered promiscuous mode
| [ 3535.095946][T17963] s0: entered promiscuous mode
| [ 3699.944262][   T60] kswapd0: page allocation failure: order:2, mode:0x40c40(GFP_NOFS|__GFP_COMP), nodemask=(null),cpuset=/,mems_allowed=0
[ 3699.946963][   T60] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 3699.947460][   T60] Call Trace:
[ 3699.947749][   T60]  <TASK>
[ 3699.947862][ T60] dump_stack_lvl (lib/dump_stack.c:122) 
[ 3699.948039][ T60] warn_alloc (mm/page_alloc.c:3517) 
[ 3699.948166][ T60] ? __pfx_warn_alloc (mm/page_alloc.c:3496) 
[ 3699.948356][ T60] __alloc_pages_slowpath.constprop.0 (mm/page_alloc.c:4439) 
[ 3699.948684][ T60] ? get_page_from_freelist (mm/page_alloc.c:3194 mm/page_alloc.c:3387) 
[ 3699.948850][ T60] ? __pfx___alloc_pages_slowpath.constprop.0 (mm/page_alloc.c:4167) 
[ 3699.949059][ T60] __alloc_pages_noprof (mm/page_alloc.c:4709) 
[ 3699.949218][ T60] ? __pfx___alloc_pages_noprof (mm/page_alloc.c:4662) 
[ 3699.949474][ T60] ? __kmalloc_noprof (mm/slub.c:4159 mm/slub.c:4170) 
[ 3699.949637][ T60] ? p9_fcall_init (net/9p/client.c:233) 
[ 3699.949796][ T60] ? p9_tag_alloc (net/9p/client.c:298) 
[ 3699.949953][ T60] ? p9_client_rpc (net/9p/client.c:691 (discriminator 4)) 
[ 3699.950206][ T60] ? v9fs_dentry_release (fs/9p/vfs_dentry.c:60) 
[ 3699.950369][ T60] ? __dentry_kill (fs/dcache.c:613) 
[ 3699.950534][ T60] ? shrink_dentry_list (fs/dcache.c:1055 fs/dcache.c:1082) 
[ 3699.950698][ T60] ? prune_dcache_sb (fs/dcache.c:1157) 
[ 3699.950950][ T60] ? super_cache_scan (fs/super.c:210) 
[ 3699.951109][ T60] ? do_shrink_slab (mm/shrinker.c:435) 
[ 3699.951270][ T60] ? shrink_slab (mm/shrinker.c:665) 
[ 3699.951428][ T60] ? shrink_node (mm/vmscan.c:319 mm/vmscan.c:5950) 
[ 3699.951686][ T60] ? balance_pgdat (mm/vmscan.c:6771 mm/vmscan.c:6954) 
[ 3699.951849][ T60] alloc_slab_page (./include/linux/gfp.h:269 ./include/linux/gfp.h:296 mm/slub.c:2321) 
[ 3699.952010][ T60] allocate_slab (mm/slub.c:2492) 
[ 3699.952174][ T60] ___slab_alloc (mm/slub.c:3723 (discriminator 3)) 
[ 3699.952337][ T60] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 3699.952554][ T60] ? p9_fcall_init (net/9p/client.c:233) 
[ 3699.952731][ T60] ? p9_fcall_init (net/9p/client.c:233) 
[ 3699.952892][ T60] ? __kmalloc_noprof (mm/slub.c:3813 mm/slub.c:3866 mm/slub.c:4025 mm/slub.c:4157 mm/slub.c:4170) 
[ 3699.953054][ T60] __kmalloc_noprof (mm/slub.c:3813 mm/slub.c:3866 mm/slub.c:4025 mm/slub.c:4157 mm/slub.c:4170) 
[ 3699.953342][ T60] p9_fcall_init (net/9p/client.c:233) 
[ 3699.953507][ T60] p9_tag_alloc (net/9p/client.c:300) 
[ 3699.953669][ T60] ? __pfx_p9_tag_alloc (net/9p/client.c:280) 
[ 3699.953840][ T60] p9_client_prepare_req (net/9p/client.c:644) 
[ 3699.954096][ T60] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 3699.954263][ T60] ? __pfx_p9_client_prepare_req (net/9p/client.c:628) 
[ 3699.954461][ T60] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 3699.954623][ T60] ? 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:227) 
[ 3699.954966][ T60] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 3699.955091][ T60] p9_client_rpc (net/9p/client.c:691 (discriminator 4)) 
[ 3699.955257][ T60] ? __pfx_p9_client_rpc (net/9p/client.c:675) 
[ 3699.955416][ T60] ? ret_from_fork (arch/x86/kernel/process.c:147) 
[ 3699.955576][ T60] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 3699.955843][ T60] ? v9fs_dentry_release (fs/9p/vfs_dentry.c:60) 
[ 3699.956001][ T60] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 3699.956158][ T60] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5724) 
[ 3699.956319][ T60] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3699.956484][ T60] p9_client_clunk (net/9p/client.c:1441 (discriminator 3)) 
[ 3699.956648][ T60] v9fs_dentry_release (fs/9p/vfs_dentry.c:60) 
[ 3699.956807][ T60] ? __pfx_v9fs_dentry_release (fs/9p/vfs_dentry.c:49) 
[ 3699.956965][ T60] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 3699.957176][ T60] __dentry_kill (fs/dcache.c:615) 
[ 3699.957341][ T60] dput.part.0 (fs/dcache.c:852) 
[ 3699.957514][ T60] ovl_stack_put (fs/overlayfs/util.c:131 (discriminator 3)) 
[ 3699.957678][ T60] ovl_destroy_inode (fs/overlayfs/super.c:183) 
[ 3699.957932][ T60] destroy_inode (fs/inode.c:313) 
[ 3699.958094][ T60] __dentry_kill (fs/dcache.c:613) 
[ 3699.958254][ T60] ? shrink_dentry_list (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 fs/dcache.c:1054 fs/dcache.c:1082) 
[ 3699.958413][ T60] shrink_dentry_list (fs/dcache.c:1055 fs/dcache.c:1082) 
[ 3699.958573][ T60] ? list_lru_walk_one (mm/list_lru.c:270) 
[ 3699.958829][ T60] prune_dcache_sb (fs/dcache.c:1157) 
[ 3699.958988][ T60] ? __pfx_prune_dcache_sb (fs/dcache.c:1157) 
[ 3699.959155][ T60] super_cache_scan (fs/super.c:210) 
[ 3699.959321][ T60] do_shrink_slab (mm/shrinker.c:435) 
[ 3699.959494][ T60] shrink_slab (mm/shrinker.c:665) 
[ 3699.959653][ T60] ? shrink_slab (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/linux/refcount.h:136 ./include/linux/refcount.h:142 ./include/linux/refcount.h:218 ./include/linux/refcount.h:236 ./include/linux/shrinker.h:141 mm/shrinker.c:657) 
[ 3699.959813][ T60] ? __pfx_shrink_slab (mm/shrinker.c:614) 
[ 3699.959986][ T60] shrink_node (mm/vmscan.c:319 mm/vmscan.c:5950) 
[ 3699.960145][ T60] ? zone_watermark_ok_safe (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2583 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3189 ./include/linux/vmstat.h:210 mm/page_alloc.c:3217) 
[ 3699.960315][ T60] balance_pgdat (mm/vmscan.c:6771 mm/vmscan.c:6954) 
[ 3699.960518][ T60] ? __pfx_balance_pgdat (mm/vmscan.c:6824) 
[ 3699.960690][ T60] ? __pfx_kswapd_try_to_sleep (mm/vmscan.c:7061) 
[ 3699.960942][ T60] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3699.961116][ T60] kswapd (mm/vmscan.c:7225) 
[ 3699.961242][ T60] ? __pfx_kswapd (mm/vmscan.c:7157) 
[ 3699.961406][ T60] ? __kthread_parkme (./arch/x86/include/asm/bitops.h:206 ./arch/x86/include/asm/bitops.h:238 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/kthread.c:280) 
[ 3699.961586][ T60] ? __pfx_kswapd (mm/vmscan.c:7157) 
[ 3699.961848][ T60] kthread (kernel/kthread.c:389) 
[ 3699.961969][ T60] ? __pfx_kthread (kernel/kthread.c:342) 
[ 3699.962129][ T60] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 3699.962288][ T60] ? __pfx_kthread (kernel/kthread.c:342) 


Finger prints:
warn_alloc:__alloc_pages_noprof:alloc_slab_page:allocate_slab:___slab_alloc