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possible deadlock in sco_connect_cfm

Status: upstream: reported C repro on 2024/05/13 19:57
Bug presence: origin:lts-only
[Documentation on labels]
Reported-by: syzbot+03a15155073eda6f603b@syzkaller.appspotmail.com
First crash: 191d, last: 11d
▶ ▼ Bug presence (2)
Date Name Commit Repro Result
2024/06/29 linux-5.15.y (ToT) 4878aadf2d15 C [report] possible deadlock in sco_connect_cfm
2024/06/29 upstream (ToT) de0a9f448633 C Didn't crash
▶ ▼ Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 possible deadlock in sco_connect_cfm 1 124d 124d 0/3 auto-obsoleted due to no activity on 2024/10/28 05:54
upstream possible deadlock in sco_connect_cfm bluetooth 11 3d15h 135d 0/28 upstream: reported on 2024/07/08 18:22
▶ ▼ Last patch testing requests (2)
Created Duration User Patch Repo Result
2024/11/09 13:04 10m retest repro linux-5.15.y report log
2024/10/09 06:13 14m retest repro linux-5.15.y report log
▶ ▼ Fix bisection attempts (1)
Created Duration User Patch Repo Result
2024/07/19 21:34 1h35m fix candidate upstream OK (0) job log

Sample crash report:
======================================================
WARNING: possible circular locking dependency detected
5.15.168-syzkaller #0 Not tainted
------------------------------------------------------
kworker/u5:7/3607 is trying to acquire lock:
ffff888023240120 (sk_lock-AF_BLUETOOTH-BTPROTO_SCO){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1678 [inline]
ffff888023240120 (sk_lock-AF_BLUETOOTH-BTPROTO_SCO){+.+.}-{0:0}, at: sco_conn_ready net/bluetooth/sco.c:1110 [inline]
ffff888023240120 (sk_lock-AF_BLUETOOTH-BTPROTO_SCO){+.+.}-{0:0}, at: sco_connect_cfm+0x146/0xad0 net/bluetooth/sco.c:1201

but task is already holding lock:
ffffffff8db7b528 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:1502 [inline]
ffffffff8db7b528 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_sync_conn_complete_evt+0x45f/0x9b0 net/bluetooth/hci_event.c:4551

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #2 (hci_cb_list_lock){+.+.}-{3:3}:
       lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623
       __mutex_lock_common+0x1da/0x25a0 kernel/locking/mutex.c:596
       __mutex_lock kernel/locking/mutex.c:729 [inline]
       mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743
       hci_connect_cfm include/net/bluetooth/hci_core.h:1502 [inline]
       hci_remote_features_evt+0x52f/0xb50 net/bluetooth/hci_event.c:3352
       hci_event_packet+0x6fe/0x1550 net/bluetooth/hci_event.c:6421
       hci_rx_work+0x232/0x990 net/bluetooth/hci_core.c:5155
       process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310
       worker_thread+0xaca/0x1280 kernel/workqueue.c:2457
       kthread+0x3f6/0x4f0 kernel/kthread.c:334
       ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287

-> #1 (&hdev->lock){+.+.}-{3:3}:
       lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623
       __mutex_lock_common+0x1da/0x25a0 kernel/locking/mutex.c:596
       __mutex_lock kernel/locking/mutex.c:729 [inline]
       mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743
       sco_sock_connect+0x181/0x8e0 net/bluetooth/sco.c:591
       __sys_connect_file net/socket.c:1923 [inline]
       __sys_connect+0x38b/0x410 net/socket.c:1940
       __do_sys_connect net/socket.c:1950 [inline]
       __se_sys_connect net/socket.c:1947 [inline]
       __x64_sys_connect+0x76/0x80 net/socket.c:1947
       do_syscall_x64 arch/x86/entry/common.c:50 [inline]
       do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
       entry_SYSCALL_64_after_hwframe+0x66/0xd0

-> #0 (sk_lock-AF_BLUETOOTH-BTPROTO_SCO){+.+.}-{0:0}:
       check_prev_add kernel/locking/lockdep.c:3053 [inline]
       check_prevs_add kernel/locking/lockdep.c:3172 [inline]
       validate_chain+0x1649/0x5930 kernel/locking/lockdep.c:3788
       __lock_acquire+0x1295/0x1ff0 kernel/locking/lockdep.c:5012
       lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623
       lock_sock_nested+0x44/0x100 net/core/sock.c:3250
       lock_sock include/net/sock.h:1678 [inline]
       sco_conn_ready net/bluetooth/sco.c:1110 [inline]
       sco_connect_cfm+0x146/0xad0 net/bluetooth/sco.c:1201
       hci_connect_cfm include/net/bluetooth/hci_core.h:1505 [inline]
       hci_sync_conn_complete_evt+0x4ce/0x9b0 net/bluetooth/hci_event.c:4551
       hci_event_packet+0xa12/0x1550 net/bluetooth/hci_event.c:6483
       hci_rx_work+0x232/0x990 net/bluetooth/hci_core.c:5155
       process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310
       worker_thread+0xaca/0x1280 kernel/workqueue.c:2457
       kthread+0x3f6/0x4f0 kernel/kthread.c:334
       ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287

other info that might help us debug this:

Chain exists of:
  sk_lock-AF_BLUETOOTH-BTPROTO_SCO --> &hdev->lock --> hci_cb_list_lock

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(hci_cb_list_lock);
                               lock(&hdev->lock);
                               lock(hci_cb_list_lock);
  lock(sk_lock-AF_BLUETOOTH-BTPROTO_SCO);

 *** DEADLOCK ***

4 locks held by kworker/u5:7/3607:
 #0: ffff888021d82138 ((wq_completion)hci0#2){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
 #1: ffffc90002f37d20 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
 #2: ffff88807cc54078 (&hdev->lock){+.+.}-{3:3}, at: hci_sync_conn_complete_evt+0xab/0x9b0 net/bluetooth/hci_event.c:4471
 #3: ffffffff8db7b528 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:1502 [inline]
 #3: ffffffff8db7b528 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_sync_conn_complete_evt+0x45f/0x9b0 net/bluetooth/hci_event.c:4551

stack backtrace:
CPU: 0 PID: 3607 Comm: kworker/u5:7 Not tainted 5.15.168-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: hci0 hci_rx_work
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106
 check_noncircular+0x2f8/0x3b0 kernel/locking/lockdep.c:2133
 check_prev_add kernel/locking/lockdep.c:3053 [inline]
 check_prevs_add kernel/locking/lockdep.c:3172 [inline]
 validate_chain+0x1649/0x5930 kernel/locking/lockdep.c:3788
 __lock_acquire+0x1295/0x1ff0 kernel/locking/lockdep.c:5012
 lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623
 lock_sock_nested+0x44/0x100 net/core/sock.c:3250
 lock_sock include/net/sock.h:1678 [inline]
 sco_conn_ready net/bluetooth/sco.c:1110 [inline]
 sco_connect_cfm+0x146/0xad0 net/bluetooth/sco.c:1201
 hci_connect_cfm include/net/bluetooth/hci_core.h:1505 [inline]
 hci_sync_conn_complete_evt+0x4ce/0x9b0 net/bluetooth/hci_event.c:4551
 hci_event_packet+0xa12/0x1550 net/bluetooth/hci_event.c:6483
 hci_rx_work+0x232/0x990 net/bluetooth/hci_core.c:5155
 process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310
 worker_thread+0xaca/0x1280 kernel/workqueue.c:2457
 kthread+0x3f6/0x4f0 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection
Bluetooth: hci0: Ignoring connect complete event for existing connection

Crashes (8):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/10/18 08:19 linux-5.15.y 584a40a22cb9 666f77ed .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan possible deadlock in sco_connect_cfm
2024/06/29 09:15 linux-5.15.y 4878aadf2d15 757f06b1 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan possible deadlock in sco_connect_cfm
2024/10/26 08:38 linux-5.15.y 74cdd62cb470 65e8686b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan possible deadlock in sco_connect_cfm
2024/10/17 21:14 linux-5.15.y 584a40a22cb9 666f77ed .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan possible deadlock in sco_connect_cfm
2024/07/19 23:32 linux-5.15.y 7c6d66f0266f 890ce4f3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan possible deadlock in sco_connect_cfm
2024/07/19 23:32 linux-5.15.y 7c6d66f0266f 890ce4f3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan possible deadlock in sco_connect_cfm
2024/07/04 03:34 linux-5.15.y 4878aadf2d15 f76a75f3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan possible deadlock in sco_connect_cfm
2024/05/13 19:56 linux-5.15.y 284087d4f7d5 9026e142 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 possible deadlock in sco_connect_cfm
* Struck through repros no longer work on HEAD.