------------[ cut here ]------------
lockdep bfs error:-1
WARNING: CPU: 0 PID: 2701 at kernel/locking/lockdep.c:1695 print_bfs_bug+0x53/0x70 kernel/locking/lockdep.c:1695
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 2701 Comm: kworker/0:2 Not tainted 5.6.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_power_efficient reg_check_chans_work
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x188/0x20d lib/dump_stack.c:118
 panic+0x2e3/0x75c kernel/panic.c:221
 __warn.cold+0x2f/0x35 kernel/panic.c:582
 report_bug+0x27b/0x2f0 lib/bug.c:195
 fixup_bug arch/x86/kernel/traps.c:174 [inline]
 fixup_bug arch/x86/kernel/traps.c:169 [inline]
 do_error_trap+0x12b/0x220 arch/x86/kernel/traps.c:267
 do_invalid_op+0x32/0x40 arch/x86/kernel/traps.c:286
 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027
RIP: 0010:print_bfs_bug+0x53/0x70 kernel/locking/lockdep.c:1695
Code: da d4 1b 08 00 74 28 48 c7 c7 00 c1 39 8c e8 d4 45 01 00 66 90 85 db 75 03 5b 5d c3 89 ee 48 c7 c7 a0 72 0b 88 e8 95 54 ec ff <0f> 0b 5b 5d c3 0f 0b 48 c7 c7 38 b6 73 89 e8 5a 01 57 00 eb be 0f
RSP: 0018:ffffc900080d77d8 EFLAGS: 00010086
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff815c06c1 RDI: fffff5200101aeed
RBP: 00000000ffffffff R08: ffff8880a0144600 R09: ffffed1015cc45c9
R10: ffffed1015cc45c8 R11: ffff8880ae622e43 R12: ffff8880a0144ee8
R13: ffff8880a0144ec0 R14: ffffc900080d7850 R15: 0000000000001d07
 check_path+0x36/0x40 kernel/locking/lockdep.c:1771
 check_noncircular+0x16d/0x3e0 kernel/locking/lockdep.c:1796
 check_prev_add kernel/locking/lockdep.c:2475 [inline]
 check_prevs_add kernel/locking/lockdep.c:2580 [inline]
 validate_chain kernel/locking/lockdep.c:2970 [inline]
 __lock_acquire+0x201b/0x3ca0 kernel/locking/lockdep.c:3954
 lock_acquire+0x197/0x420 kernel/locking/lockdep.c:4484
 __mutex_lock_common kernel/locking/mutex.c:956 [inline]
 __mutex_lock+0x156/0x13c0 kernel/locking/mutex.c:1103
 reg_check_chans_work+0x71/0xe50 net/wireless/reg.c:2196
 process_one_work+0x94b/0x1690 kernel/workqueue.c:2266
 worker_thread+0x96/0xe20 kernel/workqueue.c:2412
 kthread+0x357/0x430 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Kernel Offset: disabled
Rebooting in 86400 seconds..