BUG: spinlock bad magic on CPU#0, kworker/0:15/18990
general protection fault, probably for non-canonical address 0xdffffc34800000aa: 0000 [#1] PREEMPT SMP KASAN
KASAN: probably user-memory-access in range [0x000001a400000550-0x000001a400000557]
CPU: 0 PID: 18990 Comm: kworker/0:15 Not tainted 5.11.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events l2cap_chan_timeout
RIP: 0010:task_pid_nr include/linux/sched.h:1408 [inline]
RIP: 0010:spin_dump kernel/locking/spinlock_debug.c:65 [inline]
RIP: 0010:spin_bug.cold+0x71/0x9e kernel/locking/spinlock_debug.c:75
Code: 11 4c 89 e8 09 3e 00 00 5b 5d 41 5c 41 5d e9 14 f8 0d 00 48 8d bb 50 05 00 00 b8 ff ff 37 00 48 89 fa 48 c1 e0 2a 48 c1 ea 03 <0f> b6 04 02 84 c0 74 04 3c 03 7e 13 44 8b ab 50 05 00 00 48 81 c3
RSP: 0018:ffffc90002137a88 EFLAGS: 00010207
RAX: dffffc0000000000 RBX: 000001a400000004 RCX: 0000000000000000
RDX: 00000034800000aa RSI: ffffffff815b69d5 RDI: 000001a400000554
RBP: ffff888076f24088 R08: 0000000000000034 R09: 0000000000000000
R10: ffffffff815afbae R11: 0000000000000000 R12: 000000001e715b5c
R13: ffff8880628b3780 R14: ffff888076f23020 R15: 0000000000000005
FS:  0000000000000000(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f314789bf80 CR3: 000000005dbbd000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 debug_spin_lock_before kernel/locking/spinlock_debug.c:83 [inline]
 do_raw_spin_lock+0x216/0x2b0 kernel/locking/spinlock_debug.c:112
 spin_lock_bh include/linux/spinlock.h:359 [inline]
 lock_sock_nested+0x3b/0x110 net/core/sock.c:3049
 l2cap_sock_teardown_cb+0xa1/0x660 net/bluetooth/l2cap_sock.c:1520
 l2cap_chan_del+0xbc/0xa80 net/bluetooth/l2cap_core.c:618
 l2cap_chan_close+0x1bc/0xaf0 net/bluetooth/l2cap_core.c:823
 l2cap_chan_timeout+0x17e/0x2f0 net/bluetooth/l2cap_core.c:436
 process_one_work+0x98d/0x15f0 kernel/workqueue.c:2275
 worker_thread+0x64c/0x1120 kernel/workqueue.c:2421
 kthread+0x3b1/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296
Modules linked in:
---[ end trace c6c53db85ad0f6dd ]---
RIP: 0010:task_pid_nr include/linux/sched.h:1408 [inline]
RIP: 0010:spin_dump kernel/locking/spinlock_debug.c:65 [inline]
RIP: 0010:spin_bug.cold+0x71/0x9e kernel/locking/spinlock_debug.c:75
Code: 11 4c 89 e8 09 3e 00 00 5b 5d 41 5c 41 5d e9 14 f8 0d 00 48 8d bb 50 05 00 00 b8 ff ff 37 00 48 89 fa 48 c1 e0 2a 48 c1 ea 03 <0f> b6 04 02 84 c0 74 04 3c 03 7e 13 44 8b ab 50 05 00 00 48 81 c3
RSP: 0018:ffffc90002137a88 EFLAGS: 00010207
RAX: dffffc0000000000 RBX: 000001a400000004 RCX: 0000000000000000
RDX: 00000034800000aa RSI: ffffffff815b69d5 RDI: 000001a400000554
RBP: ffff888076f24088 R08: 0000000000000034 R09: 0000000000000000
R10: ffffffff815afbae R11: 0000000000000000 R12: 000000001e715b5c
R13: ffff8880628b3780 R14: ffff888076f23020 R15: 0000000000000005
FS:  0000000000000000(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f314789bf80 CR3: 000000005dbbd000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400