general protection fault, probably for non-canonical address 0xdffffc0000000026: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000130-0x0000000000000137]
CPU: 1 PID: 27 Comm: kworker/1:1 Not tainted 6.6.99-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: events l2cap_info_timeout
RIP: 0010:__lock_acquire+0xeb/0x7c80 kernel/locking/lockdep.c:5005
Code: 85 dc 66 00 00 83 3d cf a2 e3 0c 00 48 89 9c 24 f0 00 00 00 0f 84 11 10 00 00 83 3d fe bd 58 0b 00 74 36 48 89 f8 48 c1 e8 03 <42> 80 3c 00 00 74 1f 48 8b bc 24 88 00 00 00 e8 c1 cc 75 00 48 8b
RSP: 0018:ffffc90000a2f600 EFLAGS: 00010002
RAX: 0000000000000026 RBX: 1ffff92000145ee4 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000130
RBP: ffffc90000a2f848 R08: dffffc0000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1c94f9e R12: 0000000000000001
R13: 0000000000000000 R14: ffff88801be73c00 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f37c52a1000 CR3: 0000000078c4c000 CR4: 00000000003506e0
Call Trace:
<TASK>
lock_acquire+0x197/0x410 kernel/locking/lockdep.c:5754
lock_sock_nested+0x48/0x100 net/core/sock.c:3510
lock_sock include/net/sock.h:1731 [inline]
l2cap_sock_ready_cb+0x45/0x130 net/bluetooth/l2cap_sock.c:1658
l2cap_chan_ready net/bluetooth/l2cap_core.c:1263 [inline]
l2cap_conn_start+0x753/0xe40 net/bluetooth/l2cap_core.c:1512
l2cap_info_timeout+0x68/0xa0 net/bluetooth/l2cap_core.c:1669
process_one_work kernel/workqueue.c:2634 [inline]
process_scheduled_works+0xa45/0x15b0 kernel/workqueue.c:2711
worker_thread+0xa55/0xfc0 kernel/workqueue.c:2792
kthread+0x2fa/0x390 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__lock_acquire+0xeb/0x7c80 kernel/locking/lockdep.c:5005
Code: 85 dc 66 00 00 83 3d cf a2 e3 0c 00 48 89 9c 24 f0 00 00 00 0f 84 11 10 00 00 83 3d fe bd 58 0b 00 74 36 48 89 f8 48 c1 e8 03 <42> 80 3c 00 00 74 1f 48 8b bc 24 88 00 00 00 e8 c1 cc 75 00 48 8b
RSP: 0018:ffffc90000a2f600 EFLAGS: 00010002
RAX: 0000000000000026 RBX: 1ffff92000145ee4 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000130
RBP: ffffc90000a2f848 R08: dffffc0000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1c94f9e R12: 0000000000000001
R13: 0000000000000000 R14: ffff88801be73c00 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f37c52a1000 CR3: 0000000078c4c000 CR4: 00000000003506e0
----------------
Code disassembly (best guess):
0: 85 dc test %ebx,%esp
2: 66 00 00 data16 add %al,(%rax)
5: 83 3d cf a2 e3 0c 00 cmpl $0x0,0xce3a2cf(%rip) # 0xce3a2db
c: 48 89 9c 24 f0 00 00 mov %rbx,0xf0(%rsp)
13: 00
14: 0f 84 11 10 00 00 je 0x102b
1a: 83 3d fe bd 58 0b 00 cmpl $0x0,0xb58bdfe(%rip) # 0xb58be1f
21: 74 36 je 0x59
23: 48 89 f8 mov %rdi,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 42 80 3c 00 00 cmpb $0x0,(%rax,%r8,1) <-- trapping instruction
2f: 74 1f je 0x50
31: 48 8b bc 24 88 00 00 mov 0x88(%rsp),%rdi
38: 00
39: e8 c1 cc 75 00 call 0x75ccff
3e: 48 rex.W
3f: 8b .byte 0x8b