Hello,
syzbot found the following crash on:
HEAD commit: 3d40d711 Linux 4.19.93
git tree: linux-4.19.y
console output:
https://syzkaller.appspot.com/x/log.txt?x=1797c149e00000
kernel config:
https://syzkaller.appspot.com/x/.config?x=f02ca1f135b0c3c5
dashboard link:
https://syzkaller.appspot.com/bug?extid=020e1505881d59e912a3
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
Unfortunately, I don't have any reproducer for this crash yet.
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by:
syzbot+020e15...@syzkaller.appspotmail.com
------------[ cut here ]------------
Unexpected user alpha2:
WARNING: CPU: 1 PID: 23366 at net/wireless/reg.c:416 is_user_regdom_saved
net/wireless/reg.c:416 [inline]
WARNING: CPU: 1 PID: 23366 at net/wireless/reg.c:416 restore_alpha2
net/wireless/reg.c:3087 [inline]
WARNING: CPU: 1 PID: 23366 at net/wireless/reg.c:416
restore_regulatory_settings+0x22d/0xfd0 net/wireless/reg.c:3179
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 23366 Comm: kworker/1:0 Not tainted 4.19.93-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:77 [inline]
dump_stack+0x197/0x210 lib/dump_stack.c:118
panic+0x26a/0x50e kernel/panic.c:186
__warn.cold+0x20/0x53 kernel/panic.c:541
report_bug+0x263/0x2b0 lib/bug.c:186
fixup_bug arch/x86/kernel/traps.c:178 [inline]
fixup_bug arch/x86/kernel/traps.c:173 [inline]
do_error_trap+0x204/0x360 arch/x86/kernel/traps.c:296
do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:316
invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1037
RIP: 0010:is_user_regdom_saved net/wireless/reg.c:416 [inline]
RIP: 0010:restore_alpha2 net/wireless/reg.c:3087 [inline]
RIP: 0010:restore_regulatory_settings+0x22d/0xfd0 net/wireless/reg.c:3179
Code: 44 89 f6 e8 a5 31 8e fa 45 84 f6 0f 85 80 07 00 00 e8 57 30 8e fa 41
0f be d5 41 0f be f4 48 c7 c7 c0 76 60 88 e8 a1 be 61 fa <0f> 0b e8 3c 30
8e fa 48 8b 1d f5 29 dd 02 48 b8 00 00 00 00 00 fc
RSP: 0018:ffff888050fbfc28 EFLAGS: 00010282
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8155bc26 RDI: ffffed100a1f7f77
RBP: ffff888050fbfd20 R08: ffff88805b0a8480 R09: ffffed1015d25079
R10: ffffed1015d25078 R11: ffff8880ae9283c7 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: ffff8880ae92ba40
crda_timeout_work+0x1f/0x30 net/wireless/reg.c:513
process_one_work+0x989/0x1750 kernel/workqueue.c:2153
worker_thread+0x98/0xe40 kernel/workqueue.c:2296
kthread+0x354/0x420 kernel/kthread.c:246
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
Kernel Offset: disabled
Rebooting in 86400 seconds..
---
This bug is generated by a bot. It may contain errors.
See
https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at
syzk...@googlegroups.com.
syzbot will keep track of this bug report. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.