WARNING in hci_conn_timeout

Status: upstream: reported C repro on 2025/06/25 01:13
Bug presence: origin:lts-only
[Documentation on labels]
Reported-by: syzbot+e6c889790f3159fa29e2@syzkaller.appspotmail.com
First crash: 468d, last: 3d09h
▶ ▼ Bug presence (2)
Date Name Commit Repro Result
2025/06/26 linux-6.6.y (ToT) 6282921b6825 C [report] WARNING in hci_conn_timeout
2025/06/26 upstream (ToT) f02769e7f272 C Didn't crash
▶ ▼ Similar bugs (6)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in hci_conn_timeout bluetooth -1 syz, C done 6022 658d 2256d 28/29 fixed on 2024/12/16 09:50
linux-5.15 WARNING in hci_conn_timeout origin:lts-only -1 syz, C done 1577 12h43m 1305d 0/3 upstream: reported C repro on 2023/03/10 14:50
linux-4.14 WARNING in hci_conn_timeout -1 syz, C inconclusive 27 1324d 2258d 0/1 upstream: reported C repro on 2020/07/31 02:13
upstream WARNING in hci_conn_timeout (2) prio:low bluetooth -1 syz, C error 31845 7m 657d 0/29 upstream: reported C repro on 2024/12/17 17:47
linux-4.19 WARNING in hci_conn_timeout -1 syz, C error 127 1310d 2256d 0/1 upstream: reported C repro on 2020/08/01 17:09
linux-6.1 WARNING in hci_conn_timeout origin:lts-only -1 syz, C done 7061 now 1307d 0/3 upstream: reported C repro on 2023/03/08 17:34
▶ ▼ Fix bisection attempts (1)
Created Duration User Patch Repo Result
2025/07/14 07:29 2h58m fix candidate upstream OK (0) job log

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5812 at net/bluetooth/hci_conn.c:579 hci_conn_timeout+0xf9/0x290 net/bluetooth/hci_conn.c:579
Modules linked in:
CPU: 0 PID: 5812 Comm: kworker/u5:2 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Workqueue: hci3 hci_conn_timeout
RIP: 0010:hci_conn_timeout+0xf9/0x290 net/bluetooth/hci_conn.c:579
Code: f7 48 89 df e8 a8 ee 08 00 eb 07 e8 a1 6b f7 f7 b0 13 0f b6 f0 48 89 df 5b 41 5c 41 5e 41 5f 5d e9 cc e2 fe ff e8 87 6b f7 f7 <0f> 0b eb 8e 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 38 ff ff ff 4c
RSP: 0018:ffffc90004627b90 EFLAGS: 00010293
RAX: ffffffff89901fc9 RBX: ffff88801d7f8000 RCX: ffff88807a7f0000
RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000
RBP: 00000000ffffffff R08: ffff88801d7f8013 R09: 1ffff11003aff002
R10: dffffc0000000000 R11: ffffed1003aff003 R12: dffffc0000000000
R13: 0000000000000000 R14: ffff88801d7f8350 R15: ffff88801d7f8010
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe7d0f556c8 CR3: 0000000024ba8000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 process_one_work kernel/workqueue.c:2657 [inline]
 process_scheduled_works+0xa60/0x1600 kernel/workqueue.c:2734
 worker_thread+0xa5e/0xfe0 kernel/workqueue.c:2815
 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>

Crashes (58):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/09/19 12:42 linux-6.6.y 79643295eba1 853b104b .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in hci_conn_timeout
2026/09/15 10:04 linux-6.6.y 79643295eba1 81a27d1a .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in hci_conn_timeout
2025/06/25 20:27 linux-6.6.y 6282921b6825 26d77996 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci2-linux-6-6-kasan WARNING in hci_conn_timeout
2026/10/02 21:46 linux-6.6.y 79643295eba1 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in hci_conn_timeout
2026/09/27 23:24 linux-6.6.y 79643295eba1 a3c7249d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in hci_conn_timeout
2026/09/23 15:20 linux-6.6.y 79643295eba1 abce1216 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in hci_conn_timeout
2026/09/22 18:03 linux-6.6.y 79643295eba1 e12281bd .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in hci_conn_timeout
2026/09/14 21:38 linux-6.6.y 79643295eba1 81a27d1a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in hci_conn_timeout
2026/09/09 15:59 linux-6.6.y 8b73de7da85f 8387c273 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in hci_conn_timeout
2026/09/07 18:08 linux-6.6.y 8b73de7da85f 680aa3e1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in hci_conn_timeout
2026/09/05 06:57 linux-6.6.y 8b73de7da85f 4f7b22a0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in hci_conn_timeout
2026/08/29 00:29 linux-6.6.y a4a971135a2f 2f52988a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in hci_conn_timeout
2026/08/28 02:03 linux-6.6.y 93e0c9521fa8 69a01293 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in hci_conn_timeout
2026/08/26 09:01 linux-6.6.y dc6160265ffc 6a91adb4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in hci_conn_timeout
2026/07/28 11:02 linux-6.6.y c5596480c50e 45ae1df4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in hci_conn_timeout
2026/07/28 08:37 linux-6.6.y c5596480c50e 45ae1df4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in hci_conn_timeout
2026/07/28 03:07 linux-6.6.y c5596480c50e 45ae1df4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf WARNING in hci_conn_timeout
2026/07/26 22:11 linux-6.6.y c5596480c50e 492bab15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf WARNING in hci_conn_timeout
2026/07/26 22:03 linux-6.6.y c5596480c50e 492bab15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf WARNING in hci_conn_timeout
2026/07/24 06:12 linux-6.6.y da47cbc25466 544adce9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in hci_conn_timeout
2026/07/19 15:23 linux-6.6.y da47cbc25466 72524a66 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in hci_conn_timeout
2026/07/07 19:49 linux-6.6.y da47cbc25466 76cdc0c0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in hci_conn_timeout
2026/07/07 19:48 linux-6.6.y da47cbc25466 76cdc0c0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in hci_conn_timeout
2026/07/07 17:32 linux-6.6.y da47cbc25466 76cdc0c0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in hci_conn_timeout
2026/07/06 18:12 linux-6.6.y da47cbc25466 88b240e4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in hci_conn_timeout
2026/07/06 17:23 linux-6.6.y da47cbc25466 88b240e4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf WARNING in hci_conn_timeout
2026/07/03 23:48 linux-6.6.y d1cfde2d5d15 fcece630 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in hci_conn_timeout
2026/07/02 16:39 linux-6.6.y d1cfde2d5d15 2b70b115 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in hci_conn_timeout
2026/06/24 05:31 linux-6.6.y d1cfde2d5d15 042555ff .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in hci_conn_timeout
2026/06/13 16:34 linux-6.6.y 924b4a879cbb 1d2f3589 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in hci_conn_timeout
2026/06/06 17:50 linux-6.6.y 924b4a879cbb cc095639 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf WARNING in hci_conn_timeout
2026/06/06 15:32 linux-6.6.y 924b4a879cbb cc095639 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf WARNING in hci_conn_timeout
2026/05/21 19:22 linux-6.6.y eac8889a3a1c e195359d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in hci_conn_timeout
2026/05/09 01:05 linux-6.6.y 3b9f64db0496 b2988c17 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in hci_conn_timeout
2026/05/02 20:01 linux-6.6.y 258cf62a6dfd a0d91488 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in hci_conn_timeout
2026/05/02 19:57 linux-6.6.y 258cf62a6dfd a0d91488 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in hci_conn_timeout
2026/05/02 14:14 linux-6.6.y 258cf62a6dfd a0d91488 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in hci_conn_timeout
2026/04/30 20:25 linux-6.6.y 258cf62a6dfd a7464baf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in hci_conn_timeout
2026/04/30 17:57 linux-6.6.y 258cf62a6dfd a7464baf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf WARNING in hci_conn_timeout
2026/02/23 17:04 linux-6.6.y 7a137e9bfa0e 6beca497 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf WARNING in hci_conn_timeout
2026/02/02 12:12 linux-6.6.y 2cf6f68313dc 018ebef2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf WARNING in hci_conn_timeout
2025/11/21 08:13 linux-6.6.y 0a805b6ea8cd 280ea308 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf WARNING in hci_conn_timeout
2025/11/20 10:04 linux-6.6.y 0a805b6ea8cd 2cc4c24a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in hci_conn_timeout
2025/10/19 08:35 linux-6.6.y 0bbbd97a442d 1c8c8cd8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in hci_conn_timeout
2025/10/19 02:51 linux-6.6.y 0bbbd97a442d 1c8c8cd8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in hci_conn_timeout
2025/10/13 18:50 linux-6.6.y 655054d2c3c1 b6605ba8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in hci_conn_timeout
2025/10/10 21:08 linux-6.6.y e617101e5626 ff1712fe .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in hci_conn_timeout
2025/10/10 01:55 linux-6.6.y e617101e5626 ff1712fe .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf WARNING in hci_conn_timeout
2025/09/05 10:55 linux-6.6.y 355bd0b51d2f d291dd2d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in hci_conn_timeout
2025/09/03 14:10 linux-6.6.y cc1a1c5b404a 96a211bc .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in hci_conn_timeout
2025/08/01 20:21 linux-6.6.y 3a8ababb8b6a 40127d41 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in hci_conn_timeout
2025/07/31 10:40 linux-6.6.y dbcb8d8e4163 f8f2b4da .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in hci_conn_timeout
2025/07/31 10:39 linux-6.6.y dbcb8d8e4163 f8f2b4da .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in hci_conn_timeout
2025/07/31 10:37 linux-6.6.y dbcb8d8e4163 f8f2b4da .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in hci_conn_timeout
2025/07/24 23:03 linux-6.6.y dbcb8d8e4163 fb8f743d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in hci_conn_timeout
2025/07/04 12:54 linux-6.6.y 3f5b4c104b7d 76ad128c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in hci_conn_timeout
2025/06/25 01:12 linux-6.6.y 6282921b6825 26d77996 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in hci_conn_timeout
* Struck through repros no longer work on HEAD.