Unexpected user alpha2: B alloc_skb_fclone include/linux/skbuff.h:1022 [inline] sk_stream_alloc_skb+0xaf/0x780 net/ipv4/tcp.c:855 tcp_sendmsg_locked+0xef4/0x2fd0 net/ipv4/tcp.c:1301 ------------[ cut here ]------------ tcp_sendmsg+0x2b/0x40 net/ipv4/tcp.c:1457 WARNING: CPU: 1 PID: 2686 at net/wireless/reg.c:414 is_user_regdom_saved net/wireless/reg.c:414 [inline] WARNING: CPU: 1 PID: 2686 at net/wireless/reg.c:414 restore_alpha2 net/wireless/reg.c:2566 [inline] WARNING: CPU: 1 PID: 2686 at net/wireless/reg.c:414 restore_regulatory_settings.cold+0x40/0x47 net/wireless/reg.c:2658 inet_sendmsg+0x116/0x4d0 net/ipv4/af_inet.c:762 Kernel panic - not syncing: panic_on_warn set ... sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xc5/0x100 net/socket.c:656 SYSC_sendto+0x1c4/0x2b0 net/socket.c:1763 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45c849 RSP: 002b:00007f87b864ec78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f87b864f6d4 RCX: 000000000045c849 RDX: ffffffffffffffef RSI: 0000000020d7cfcb RDI: 0000000000000005 RBP: 000000000076bf00 R08: 0000000000000000 R09: 0000000009000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000006 R13: 0000000000000a06 R14: 00000000004ccbc6 R15: 000000000000002e CPU: 1 PID: 2686 Comm: kworker/1:2 Not tainted 4.14.174-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+0x13e/0x194 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:963 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:ffff88809fec7c98 EFLAGS: 00010286 RAX: 000000000000001a RBX: 0000000000000001 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff86ac07e0 RDI: ffffed1013fd8f89 RBP: 0000000000000042 R08: 000000000000001a R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: ffff88809fd60a00 R15: ffff8880aeb2acc0 crda_timeout_work+0x1b/0x20 net/wireless/reg.c:541 process_one_work+0x813/0x1540 kernel/workqueue.c:2116 worker_thread+0x5d1/0x1070 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..