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WARNING in hci_conn_timeout (2)

Status: upstream: reported C repro on 2024/12/17 17:47
Subsystems: bluetooth
[Documentation on labels]
Reported-by: syzbot+fc4b5b2477d4ca272907@syzkaller.appspotmail.com
First crash: 209d, last: 11h50m
Cause bisection: failed (error log, bisect log)
  
▶ ▼ Discussions (7)
Title Replies (including bot) Last reply
[syzbot] Monthly bluetooth report (Jun 2025) 0 (1) 2025/06/23 07:31
[syzbot] Monthly bluetooth report (May 2025) 0 (1) 2025/05/22 12:58
[syzbot] Monthly bluetooth report (Apr 2025) 0 (1) 2025/04/22 10:11
[syzbot] Monthly bluetooth report (Mar 2025) 0 (1) 2025/03/20 23:48
[syzbot] Monthly bluetooth report (Feb 2025) 0 (1) 2025/02/17 12:44
[syzbot] Monthly bluetooth report (Jan 2025) 0 (1) 2025/01/17 10:35
[syzbot] [bluetooth?] WARNING in hci_conn_timeout (2) 0 (1) 2024/12/17 17:47
▶ ▼ Similar bugs (6)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in hci_conn_timeout bluetooth -1 C done 6022 209d 1807d 28/29 fixed on 2024/12/16 09:50
linux-5.15 WARNING in hci_conn_timeout origin:lts-only -1 C done 1238 1d23h 856d 0/3 upstream: reported C repro on 2023/03/10 14:50
linux-4.14 WARNING in hci_conn_timeout -1 C inconclusive 27 874d 1808d 0/1 upstream: reported C repro on 2020/07/31 02:13
linux-6.6 WARNING in hci_conn_timeout origin:lts-only -1 C 3 9d09h 18d 0/2 upstream: reported C repro on 2025/06/25 01:13
linux-4.19 WARNING in hci_conn_timeout -1 C error 127 861d 1807d 0/1 upstream: reported C repro on 2020/08/01 17:09
linux-6.1 WARNING in hci_conn_timeout origin:lts-only -1 C done 3976 11h23m 858d 0/3 upstream: reported C repro on 2023/03/08 17:34

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 5842 at net/bluetooth/hci_conn.c:567 hci_conn_timeout+0xfb/0x290 net/bluetooth/hci_conn.c:567
Modules linked in:
CPU: 1 UID: 0 PID: 5842 Comm: kworker/u9:9 Not tainted 6.13.0-rc3-syzkaller-00044-gaef25be35d23 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024
Workqueue: hci4 hci_conn_timeout
RIP: 0010:hci_conn_timeout+0xfb/0x290 net/bluetooth/hci_conn.c:567
Code: 4c 89 f7 e8 07 c2 09 00 eb 07 e8 20 32 ed f6 b0 13 0f b6 f0 4c 89 f7 5b 41 5c 41 5e 41 5f 5d e9 5b b3 fe ff e8 06 32 ed f6 90 <0f> 0b 90 eb 8f 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c 36 ff ff ff 48
RSP: 0018:ffffc900040afb90 EFLAGS: 00010293
RAX: ffffffff8ab2419a RBX: ffff8880306948e8 RCX: ffff888011953c00
RDX: 0000000000000000 RSI: 00000000fffffffe RDI: 0000000000000000
RBP: 00000000fffffffe R08: ffffffff8ab24103 R09: 1ffff110060d2802
R10: dffffc0000000000 R11: ffffed10060d2803 R12: dffffc0000000000
R13: ffffffff8168ee46 R14: ffff888030694000 R15: 0000000002400000
FS:  0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f11a8aab9b4 CR3: 0000000032b94000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 process_one_work kernel/workqueue.c:3229 [inline]
 process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3310
 worker_thread+0x870/0xd30 kernel/workqueue.c:3391
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>

Crashes (549):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/12/18 09:16 upstream aef25be35d23 a0626d3a .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in hci_conn_timeout
2024/12/17 12:45 upstream f44d154d6e3d f93b2b55 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in hci_conn_timeout
2025/07/09 16:27 upstream 733923397fd9 956bd956 .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in hci_conn_timeout
2025/02/26 18:57 upstream ac9c34d1e45a 6a8fcbc4 .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in hci_conn_timeout
2024/12/31 15:39 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 573067a5a685 d3ccff63 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in hci_conn_timeout
2025/07/13 10:33 upstream 3f31a806a62e 3cda49cf .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in hci_conn_timeout
2025/03/04 21:34 upstream 99fa936e8e4f c3901742 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in hci_conn_timeout
2025/01/19 10:37 upstream fda5e3f28400 f2cb035c .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root WARNING in hci_conn_timeout
2025/02/06 04:43 linux-next ed88b8b82c53 577d049b .config console log report syz / log [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-linux-next-kasan-gce-root WARNING in hci_conn_timeout
2025/07/05 21:41 upstream 05df91921da6 4f67c4ae .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in hci_conn_timeout
2025/07/04 23:15 upstream 4c06e63b9203 d869b261 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in hci_conn_timeout
2025/06/21 09:10 upstream 11313e2f7812 d6cdfb8a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root WARNING in hci_conn_timeout
2025/06/16 21:56 upstream e04c78d86a96 d1716036 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in hci_conn_timeout
2025/06/16 06:44 upstream 08215f5486ec 5f4b362d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in hci_conn_timeout
2025/06/08 16:16 upstream 8630c59e9936 4826c28e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in hci_conn_timeout
2025/05/31 20:39 upstream 0f70f5b08a47 3d2f584d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in hci_conn_timeout
2025/05/23 10:51 upstream 94305e83eccb fa44301a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in hci_conn_timeout
2025/03/20 03:00 upstream a7f2e10ecd8f 3b7445cf .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 WARNING in hci_conn_timeout
2025/07/13 03:33 upstream 3f31a806a62e 3cda49cf .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in hci_conn_timeout
2025/07/12 16:22 upstream 379f604cc3dc 3cda49cf .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in hci_conn_timeout
2025/07/11 11:33 upstream bc9ff192a6c9 3cda49cf .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in hci_conn_timeout
2025/07/11 08:40 upstream bc9ff192a6c9 3cda49cf .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in hci_conn_timeout
2025/07/10 12:59 upstream 8c2e52ebbe88 d7384b6d .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in hci_conn_timeout
2025/07/10 05:20 upstream 8c2e52ebbe88 956bd956 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in hci_conn_timeout
2025/07/10 03:48 upstream 8c2e52ebbe88 956bd956 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in hci_conn_timeout
2025/07/09 14:20 upstream 733923397fd9 956bd956 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in hci_conn_timeout
2025/07/08 23:23 upstream d006330be3f7 4d9fdfa4 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in hci_conn_timeout
2025/07/08 07:58 upstream d7b8f8e20813 4f67c4ae .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in hci_conn_timeout
2025/07/07 04:45 upstream 772b78c2abd8 4f67c4ae .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in hci_conn_timeout
2025/07/06 17:15 upstream 1f988d0788f5 4f67c4ae .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in hci_conn_timeout
2025/07/06 00:02 upstream a79a588fc176 4f67c4ae .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in hci_conn_timeout
2025/07/05 10:33 upstream c435a4f487e8 4f67c4ae .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in hci_conn_timeout
2025/07/05 06:42 upstream c435a4f487e8 4f67c4ae .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in hci_conn_timeout
2025/07/02 23:36 upstream b4911fb0b060 0cd59a8f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in hci_conn_timeout
2025/07/02 05:33 upstream 66701750d556 bc80e4f0 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in hci_conn_timeout
2025/07/01 20:02 upstream 66701750d556 a073c096 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in hci_conn_timeout
2025/06/30 15:20 upstream d0b3b7b22dfa 6e83b42d .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in hci_conn_timeout
2025/06/30 05:44 upstream afa9a6f4f574 fc9d8ee5 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in hci_conn_timeout
2025/06/30 03:41 upstream afa9a6f4f574 fc9d8ee5 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in hci_conn_timeout
2025/06/30 00:10 upstream afa9a6f4f574 fc9d8ee5 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in hci_conn_timeout
2025/06/29 00:25 upstream aaf724ed6926 fc9d8ee5 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in hci_conn_timeout
2025/06/27 21:26 upstream 67a993863163 803ce19b .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in hci_conn_timeout
2025/06/27 10:37 upstream f02769e7f272 803ce19b .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in hci_conn_timeout
2025/06/25 01:07 upstream 7595b66ae9de 26d77996 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in hci_conn_timeout
2025/06/24 17:17 upstream 78f4e737a53e 26d77996 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in hci_conn_timeout
2025/06/22 16:33 upstream 739a6c93cc75 d6cdfb8a .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in hci_conn_timeout
2025/06/21 12:13 upstream 11313e2f7812 d6cdfb8a .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in hci_conn_timeout
2025/06/20 09:55 upstream 41687a5c6f8b ed3e87f7 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in hci_conn_timeout
2025/06/17 17:49 upstream 9afe652958c3 74c9d252 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in hci_conn_timeout
2025/06/17 08:46 upstream 9afe652958c3 74c9d252 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in hci_conn_timeout
2025/06/16 17:29 upstream e04c78d86a96 d1716036 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in hci_conn_timeout
2025/06/15 12:49 upstream 8c6bc74c7f89 5f4b362d .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in hci_conn_timeout
2025/06/15 11:21 upstream 8c6bc74c7f89 5f4b362d .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in hci_conn_timeout
2025/07/08 17:25 upstream d006330be3f7 4d9fdfa4 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in hci_conn_timeout
2025/06/26 15:43 upstream ee88bddf7f2f 1ae8177e .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in hci_conn_timeout
2025/06/21 14:06 upstream 3f75bfff44be d6cdfb8a .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in hci_conn_timeout
2025/06/21 03:00 upstream 11313e2f7812 d6cdfb8a .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in hci_conn_timeout
2025/06/14 20:17 upstream 8c6bc74c7f89 5f4b362d .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in hci_conn_timeout
2025/06/14 04:08 upstream 4774cfe3543a 0e8da31f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in hci_conn_timeout
2025/06/22 08:41 bpf d4adf1c9ee77 d6cdfb8a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce WARNING in hci_conn_timeout
2025/02/03 13:06 net 235174b2bed8 a21a8419 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce WARNING in hci_conn_timeout
2025/06/19 14:12 bpf-next cd7312a78f36 ed3e87f7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce WARNING in hci_conn_timeout
2025/03/13 12:32 net-next 0ea09cbf8350 44be8b44 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in hci_conn_timeout
2025/07/10 20:23 linux-next b551c4e2a98a 19d4829f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce WARNING in hci_conn_timeout
2025/07/09 19:30 linux-next 835244aba90d f4e5e155 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce WARNING in hci_conn_timeout
2025/06/10 05:29 linux-next 475c850a7fdd 4826c28e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in hci_conn_timeout
2025/07/04 06:10 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 3cd1604f930f 76ad128c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in hci_conn_timeout
2025/06/28 10:15 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 9aa9b43d689e fc9d8ee5 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in hci_conn_timeout
2025/06/16 23:04 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 39dfc971e42d d1716036 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in hci_conn_timeout
2025/06/15 23:33 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 39dfc971e42d 5f4b362d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in hci_conn_timeout
2025/06/15 05:36 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 39dfc971e42d 5f4b362d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in hci_conn_timeout
2025/06/14 18:03 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 39dfc971e42d 5f4b362d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in hci_conn_timeout
* Struck through repros no longer work on HEAD.