syzbot

 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x154 lib/fault-inject.c:149
 should_failslab+0xd6/0x130 mm/failslab.c:32
 slab_pre_alloc_hook mm/slab.h:421 [inline]
 slab_alloc_node mm/slab.c:3297 [inline]
 kmem_cache_alloc_node+0x25f/0x400 mm/slab.c:3640
 __alloc_skb+0x9a/0x4c0 net/core/skbuff.c:193
------------[ cut here ]------------
WARNING: CPU: 0 PID: 3 at net/wireless/reg.c:414 is_user_regdom_saved net/wireless/reg.c:414 [inline]
WARNING: CPU: 0 PID: 3 at net/wireless/reg.c:414 restore_alpha2 net/wireless/reg.c:2566 [inline]
WARNING: CPU: 0 PID: 3 at net/wireless/reg.c:414 restore_regulatory_settings.cold+0x40/0x47 net/wireless/reg.c:2658
Kernel panic - not syncing: panic_on_warn set ...

 alloc_skb include/linux/skbuff.h:980 [inline]
 netlink_alloc_large_skb net/netlink/af_netlink.c:1159 [inline]
 netlink_sendmsg+0x921/0xbb0 net/netlink/af_netlink.c:1853
 sock_sendmsg_nosec net/socket.c:646 [inline]
 sock_sendmsg+0xb5/0x100 net/socket.c:656
 ___sys_sendmsg+0x70a/0x840 net/socket.c:2062
 __sys_sendmsg+0xa3/0x120 net/socket.c:2096
 SYSC_sendmsg net/socket.c:2107 [inline]
 SyS_sendmsg+0x27/0x40 net/socket.c:2103
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x45ca69
RSP: 002b:00007fed1c67ec78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000004ff640 RCX: 000000000045ca69
RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000003
RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004
R13: 0000000000000996 R14: 00000000004d6150 R15: 00007fed1c67f6d4
CPU: 0 PID: 3 Comm: kworker/0:0 Not tainted 4.14.183-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_power_efficient crda_timeout_work
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x283 lib/dump_stack.c:58
 panic+0x1f9/0x42d kernel/panic.c:183
 __warn.cold+0x2f/0x30 kernel/panic.c:547
 report_bug+0x20a/0x248 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:177 [inline]
 fixup_bug arch/x86/kernel/traps.c:172 [inline]
 do_error_trap+0x195/0x2d0 arch/x86/kernel/traps.c:295
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:964
RIP: 0010:is_user_regdom_saved net/wireless/reg.c:414 [inline]
RIP: 0010:restore_alpha2 net/wireless/reg.c:2566 [inline]
RIP: 0010:restore_regulatory_settings.cold+0x40/0x47 net/wireless/reg.c:2658
RSP: 0018:ffff8880a9c77c98 EFLAGS: 00010286
RAX: 000000000000001a RBX: 0000000000000001 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff868c0980 RDI: ffffed101538ef89
RBP: 0000000000000041 R08: 000000000000001a R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: ffff8880a9c2a900 R15: ffff8880aec2ad00
 crda_timeout_work+0x1b/0x20 net/wireless/reg.c:541
 process_one_work+0x7c0/0x14c0 kernel/workqueue.c:2116
 worker_thread+0x5d7/0x1080 kernel/workqueue.c:2250
 kthread+0x30d/0x420 kernel/kthread.c:232
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
Kernel Offset: disabled
Rebooting in 86400 seconds..