general protection fault, probably for non-canonical address 0xdffffc0000000026: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000130-0x0000000000000137] CPU: 0 PID: 14 Comm: kworker/0:1 Not tainted 6.1.119-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: events l2cap_info_timeout RIP: 0010:__lock_acquire+0x69/0x1f80 kernel/locking/lockdep.c:4919 Code: df 0f b6 04 10 84 c0 0f 85 fb 15 00 00 83 3d 31 84 30 0d 00 0f 84 a8 14 00 00 83 3d b0 e7 b4 0b 00 74 2b 4c 89 f0 48 c1 e8 03 <80> 3c 10 00 74 12 4c 89 f7 e8 a9 7c 77 00 48 ba 00 00 00 00 00 fc RSP: 0000:ffffc90000137800 EFLAGS: 00010002 RAX: 0000000000000026 RBX: 0000000000000000 RCX: 0000000000000000 RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000130 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 R13: ffff888017ed1dc0 R14: 0000000000000130 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000000d08e000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 lock_sock_nested+0x44/0x100 net/core/sock.c:3485 lock_sock include/net/sock.h:1750 [inline] l2cap_sock_ready_cb+0x43/0x130 net/bluetooth/l2cap_sock.c:1694 l2cap_chan_ready net/bluetooth/l2cap_core.c:1409 [inline] l2cap_conn_start+0x8c9/0x10a0 net/bluetooth/l2cap_core.c:1667 process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292 worker_thread+0xa47/0x1200 kernel/workqueue.c:2439 kthread+0x28d/0x320 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__lock_acquire+0x69/0x1f80 kernel/locking/lockdep.c:4919 Code: df 0f b6 04 10 84 c0 0f 85 fb 15 00 00 83 3d 31 84 30 0d 00 0f 84 a8 14 00 00 83 3d b0 e7 b4 0b 00 74 2b 4c 89 f0 48 c1 e8 03 <80> 3c 10 00 74 12 4c 89 f7 e8 a9 7c 77 00 48 ba 00 00 00 00 00 fc RSP: 0000:ffffc90000137800 EFLAGS: 00010002 RAX: 0000000000000026 RBX: 0000000000000000 RCX: 0000000000000000 RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000130 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 R13: ffff888017ed1dc0 R14: 0000000000000130 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000000d08e000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: df 0f fisttps (%rdi) 2: b6 04 mov $0x4,%dh 4: 10 84 c0 0f 85 fb 15 adc %al,0x15fb850f(%rax,%rax,8) b: 00 00 add %al,(%rax) d: 83 3d 31 84 30 0d 00 cmpl $0x0,0xd308431(%rip) # 0xd308445 14: 0f 84 a8 14 00 00 je 0x14c2 1a: 83 3d b0 e7 b4 0b 00 cmpl $0x0,0xbb4e7b0(%rip) # 0xbb4e7d1 21: 74 2b je 0x4e 23: 4c 89 f0 mov %r14,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 80 3c 10 00 cmpb $0x0,(%rax,%rdx,1) <-- trapping instruction 2e: 74 12 je 0x42 30: 4c 89 f7 mov %r14,%rdi 33: e8 a9 7c 77 00 call 0x777ce1 38: 48 rex.W 39: ba 00 00 00 00 mov $0x0,%edx 3e: 00 fc add %bh,%ah