kmalloc-96              1491KB       1660KB
kmem_cache_node          219KB        220KB
kmem_cache               195KB        195KB
Out of memory and no killable processes...
Kernel panic - not syncing: System is deadlocked on memory
CPU: 0 UID: 0 PID: 5946 Comm: kworker/0:3 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: events reg_todo
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x3d/0x1f0 lib/dump_stack.c:120
 vpanic+0x640/0x6f0 kernel/panic.c:489
 panic+0xca/0xd0 kernel/panic.c:626
 out_of_memory+0x16e4/0x1700 mm/oom_kill.c:1181
 __alloc_pages_may_oom mm/page_alloc.c:4060 [inline]
 __alloc_pages_slowpath mm/page_alloc.c:4870 [inline]
 __alloc_frozen_pages_noprof+0x1dfa/0x2470 mm/page_alloc.c:5196
 alloc_pages_mpol+0x1fb/0x550 mm/mempolicy.c:2416
 alloc_slab_page mm/slub.c:3055 [inline]
 allocate_slab mm/slub.c:3236 [inline]
 new_slab+0x268/0x360 mm/slub.c:3282
 ___slab_alloc+0xd79/0x1a50 mm/slub.c:4651
 __slab_alloc.constprop.0+0x63/0x110 mm/slub.c:4774
 __slab_alloc_node mm/slub.c:4850 [inline]
 slab_alloc_node mm/slub.c:5272 [inline]
 __kmalloc_cache_noprof+0x477/0x780 mm/slub.c:5762
 kmalloc_noprof include/linux/slab.h:957 [inline]
 kzalloc_noprof include/linux/slab.h:1094 [inline]
 kobject_uevent_env+0x265/0x1870 lib/kobject_uevent.c:540
 call_crda+0x18a/0x3b0 net/wireless/reg.c:586
 reg_query_database net/wireless/reg.c:1129 [inline]
 reg_process_hint_core net/wireless/reg.c:2665 [inline]
 reg_process_hint+0x86b/0x1440 net/wireless/reg.c:3011
 reg_process_pending_hints net/wireless/reg.c:3099 [inline]
 reg_todo+0x1c5/0x900 net/wireless/reg.c:3190
 process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3263
 process_scheduled_works kernel/workqueue.c:3346 [inline]
 worker_thread+0x6c8/0xf10 kernel/workqueue.c:3427
 kthread+0x3c5/0x780 kernel/kthread.c:463
 ret_from_fork+0x675/0x7d0 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Kernel Offset: disabled
Rebooting in 86400 seconds..