general protection fault in l2cap_chan

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
linux-4.19	general protection fault in l2cap_chan_timeout (2)	C		error	2	952d	1045d	0/1	upstream: reported C repro on 2021/06/23 21:07
upstream	general protection fault in l2cap_chan_timeout (2) bluetooth				1	1073d	1068d	0/26	auto-closed as invalid on 2021/09/23 19:42
upstream	general protection fault in l2cap_chan_timeout bluetooth				1	1254d	1250d	0/26	auto-closed as invalid on 2021/03/25 23:40
upstream	general protection fault in l2cap_chan_timeout (3) bluetooth	C	inconclusive	inconclusive	5	6d10h	813d	0/26	upstream: reported C repro on 2022/02/10 18:27
linux-4.19	general protection fault in l2cap_chan_timeout				1	1349d	1349d	0/1	auto-closed as invalid on 2020/12/21 18:33
linux-4.14	general protection fault in l2cap_chan_timeout (2)	C			3	439d	804d	0/1	upstream: reported C repro on 2022/02/18 23:43

kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN Modules linked in: CPU: 0 PID: 3347 Comm: kworker/0:2 Not tainted 4.14.191-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events l2cap_chan_timeout task: ffff88809b6de400 task.stack: ffff88809b698000 RIP: 0010:trace_event_get_offsets_lock_acquire include/trace/events/lock.h:13 [inline] RIP: 0010:perf_trace_lock_acquire+0xb2/0x510 include/trace/events/lock.h:13 RSP: 0018:ffff88809b69faa0 EFLAGS: 00010002 RAX: dffffc0000000000 RBX: ffff88809b787428 RCX: 0000000000000000 RDX: 0000000000000057 RSI: 00000000000002a0 RDI: ffffffff87d6f2c0 RBP: ffff88809b69fb68 R08: 0000000000000000 R09: 0000000000000001 R10: 000000000011dff3 R11: ffff88809b6de400 R12: ffffffff87d6f240 R13: 00000000000002a0 R14: 0000000000000000 R15: ffff88809b69fb40 FS: 0000000000000000(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa51edacdb8 CR3: 000000005b8ec000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: trace_lock_acquire include/trace/events/lock.h:13 [inline] lock_acquire+0x2b8/0x3f0 kernel/locking/lockdep.c:3997 __mutex_lock_common kernel/locking/mutex.c:756 [inline] __mutex_lock+0xc4/0x1310 kernel/locking/mutex.c:893 l2cap_chan_timeout+0x4a/0x1e0 net/bluetooth/l2cap_core.c:416 process_one_work+0x793/0x14a0 kernel/workqueue.c:2116 worker_thread+0x5cc/0xff0 kernel/workqueue.c:2250 kthread+0x30d/0x420 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 Code: 00 0f 85 45 03 00 00 49 8d 45 18 4d 8b b4 24 80 00 00 00 48 89 c2 48 89 85 60 ff ff ff 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 2b 03 00 00 49 8b 7d 18 48 c7 c0 60 43 aa 86 RIP: trace_event_get_offsets_lock_acquire include/trace/events/lock.h:13 [inline] RSP: ffff88809b69faa0 RIP: perf_trace_lock_acquire+0xb2/0x510 include/trace/events/lock.h:13 RSP: ffff88809b69faa0 ---[ end trace 07c6753d6be77e44 ]---