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WARNING in hci_conn_timeout

Status: upstream: reported C repro on 2020/08/01 18:55
Reported-by: syzbot+2446dd3cb07277388db6@syzkaller.appspotmail.com
First crash: 856d, last: 28m

Cause bisection: introduced by (bisect log) :
commit 3d30311c0e4d834c94e6a27d6242a942d6a76b85
Author: Varsha Rao <rvarsha016@gmail.com>
Date: Sun Oct 9 11:13:56 2016 +0000

  staging: vt6655: Removes unnecessary blank lines.

Crash: WARNING in nf_unregister_net_hook (log)
Repro: C syz .config
similar bugs (2):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.14 WARNING in hci_conn_timeout C inconclusive 25 84d 858d 0/1 upstream: reported C repro on 2020/07/31 02:13
linux-4.19 WARNING in hci_conn_timeout C error 85 2d14h 856d 0/1 upstream: reported C repro on 2020/08/01 17:09

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 48 at net/bluetooth/hci_conn.c:646 hci_conn_timeout+0x2ff/0x4f0 net/bluetooth/hci_conn.c:646
Modules linked in:
CPU: 1 PID: 48 Comm: kworker/u5:0 Not tainted 6.0.0-syzkaller-09589-g55be6084c8e0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
Workqueue: hci0 hci_conn_timeout
RIP: 0010:hci_conn_timeout+0x2ff/0x4f0 net/bluetooth/hci_conn.c:646
Code: 0b 8b e8 94 7f 1f f9 4c 89 f1 4c 89 e2 48 c7 c6 80 94 0b 8b 48 c7 c7 48 cf dc 8d e8 db bc c2 fb e9 6a fd ff ff e8 71 7f 1f f9 <0f> 0b e9 8a fd ff ff 84 c0 0f 84 e0 fe ff ff 4c 89 ef e8 3a e6 6c
RSP: 0018:ffffc90000b97ce0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff88807b12c250 RCX: 0000000000000000
RDX: ffff888017a08000 RSI: ffffffff885bcacf RDI: 0000000000000005
RBP: 00000000ffffda54 R08: 0000000000000005 R09: 0000000000000000
R10: 00000000ffffda54 R11: 0000000000000001 R12: ffff88807b12c000
R13: ffffc90000b97da8 R14: ffff8880178ba100 R15: ffff888017a00000
FS:  0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555568b9608 CR3: 000000001cefb000 CR4: 0000000000350ee0
Call Trace:
 <TASK>
 process_one_work+0x991/0x1610 kernel/workqueue.c:2289
 worker_thread+0x665/0x1080 kernel/workqueue.c:2436
 kthread+0x2e4/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>

Fix bisection attempts:
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-smack-root 2022/04/19 20:55 upstream 559089e0a93d e2d91b1d .config log report syz C
ci-upstream-kasan-gce 2021/12/09 17:18 upstream 2a987e65025e 7eb7e152 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2021/05/08 10:20 upstream dd860052c99b 79fb24e2 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2021/04/08 09:57 upstream 454859c552da 79fb24e2 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2021/03/03 17:31 upstream f69d02e37a85 79fb24e2 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2021/01/25 22:58 upstream f8ad8187c3b5 79fb24e2 .config log report syz C
* Struck through repros no longer work on HEAD.
Crashes (1461):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-root 2022/10/20 13:42 upstream 55be6084c8e0 b31320fc .config log report syz C WARNING in hci_conn_timeout
ci-upstream-kasan-gce 2022/10/10 16:50 upstream 4899a36f91a9 aea5da89 .config log report syz C WARNING in hci_conn_timeout
ci-upstream-kasan-gce 2022/08/12 10:49 upstream 7ebfc85e2cd7 402cd70d .config log report syz C WARNING in hci_conn_timeout
ci-upstream-kasan-gce-selinux-root 2022/07/14 20:23 upstream 4a57a8400075 5d921b08 .config log report syz C WARNING in hci_conn_timeout
ci-qemu-upstream 2022/06/15 22:58 upstream 018ab4fabddd 1719ee24 .config log report syz C WARNING in hci_conn_timeout
ci-upstream-kasan-gce-smack-root 2022/06/13 20:27 upstream b13baccc3850 0d5abf15 .config log report syz C WARNING in hci_conn_timeout
ci-qemu-upstream 2022/05/08 10:49 upstream 30c8e80f7932 e60b1103 .config log report syz C WARNING in hci_conn_timeout
ci-upstream-kasan-gce-root 2022/04/24 22:13 upstream 22da5264abf4 131df97d .config log report syz C WARNING in hci_conn_timeout
ci-upstream-kasan-gce-smack-root 2022/03/18 19:34 upstream 551acdc3c3d2 e2d91b1d .config log report syz C WARNING in hci_conn_timeout
ci-upstream-kasan-gce-root 2022/02/26 01:15 upstream 53ab78cd6d5a 45a13a73 .config log report syz C WARNING in hci_conn_timeout
ci-upstream-kasan-gce 2021/09/02 10:22 upstream 835d31d319d9 7eb7e152 .config log report syz C WARNING in hci_conn_timeout
ci-upstream-linux-next-kasan-gce-root 2022/11/19 22:47 linux-next 15f3bff12cf6 5bb70014 .config log report syz C WARNING in hci_conn_timeout
ci-upstream-linux-next-kasan-gce-root 2022/10/05 07:49 linux-next aaa11ce2ffc8 eab8f949 .config log report syz C WARNING in hci_conn_timeout
ci-upstream-linux-next-kasan-gce-root 2022/06/10 03:09 linux-next ff539ac73ea5 0d5abf15 .config log report syz C WARNING in hci_conn_timeout
ci-upstream-linux-next-kasan-gce-root 2022/03/20 19:39 linux-next 91265a6da44d e2d91b1d .config log report syz C WARNING in hci_conn_timeout
ci-upstream-gce-arm64 2022/11/09 00:48 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 56751c56c2a2 060f945e .config log report syz C WARNING in hci_conn_timeout
ci-upstream-gce-arm64 2022/10/10 16:46 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bbed346d5a96 aea5da89 .config log report syz C WARNING in hci_conn_timeout
ci-upstream-kasan-gce-selinux-root 2020/09/12 06:32 upstream e8878ab82545 79fb24e2 .config log report syz C
ci-upstream-kasan-gce-root 2020/09/11 04:54 upstream 7fe10096c150 409809d8 .config log report syz C
ci-upstream-kasan-gce-smack-root 2020/09/07 06:25 upstream a8205e310011 abf9ba4f .config log report syz C
ci-upstream-kasan-gce 2020/09/06 17:53 upstream dd9fb9bb3340 abf9ba4f .config log report syz C
ci-upstream-kasan-gce 2020/08/14 03:03 upstream 990f227371a4 54ce1ed6 .config log report syz C
ci-upstream-kasan-gce-smack-root 2020/08/01 16:24 upstream 7dc6fd0f3b84 d895b3be .config log report syz C
ci-upstream-kasan-gce-386 2020/09/06 21:42 upstream dd9fb9bb3340 abf9ba4f .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/09/24 21:57 linux-next d1d2220c7f39 54289b08 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/08/05 18:50 linux-next 01830e6c042e b7129355 .config log report syz C
ci-qemu-upstream 2022/12/06 07:07 upstream bce9332220bd 045cbb84 .config log report info WARNING in hci_conn_timeout
ci-qemu-upstream 2022/12/05 13:17 upstream 76dcd734eca2 dff7de3a .config log report info WARNING in hci_conn_timeout
ci-upstream-kasan-gce-selinux-root 2022/12/05 10:46 upstream c2bf05db6c78 e080de16 .config log report info WARNING in hci_conn_timeout
ci-upstream-kasan-gce-smack-root 2022/12/04 09:22 upstream 97ee9d1c1696 e080de16 .config log report info WARNING in hci_conn_timeout
ci-qemu-upstream 2022/12/04 05:10 upstream c2bf05db6c78 e080de16 .config log report info WARNING in hci_conn_timeout
ci-upstream-kasan-gce-root 2022/12/03 22:57 upstream bdaa78c6aa86 e080de16 .config log report info WARNING in hci_conn_timeout
ci-qemu-upstream 2022/12/03 15:58 upstream 97ee9d1c1696 e080de16 .config log report info WARNING in hci_conn_timeout
ci-qemu-upstream 2022/12/03 14:29 upstream 97ee9d1c1696 e080de16 .config log report info WARNING in hci_conn_timeout
ci-upstream-kasan-gce-root 2022/12/03 13:27 upstream bdaa78c6aa86 e080de16 .config log report info WARNING in hci_conn_timeout
ci-qemu-upstream 2022/12/03 03:00 upstream bdaa78c6aa86 e080de16 .config log report info WARNING in hci_conn_timeout
ci-qemu-upstream 2022/12/02 23:22 upstream bdaa78c6aa86 e080de16 .config log report info WARNING in hci_conn_timeout
ci-upstream-kasan-gce-root 2022/12/02 17:39 upstream a4412fdd49dc e080de16 .config log report info WARNING in hci_conn_timeout
ci-upstream-kasan-gce-smack-root 2022/12/02 13:19 upstream a4412fdd49dc e080de16 .config log report info WARNING in hci_conn_timeout
ci-upstream-kasan-gce-selinux-root 2022/12/01 23:13 upstream ef4d3ea40565 e080de16 .config log report info WARNING in hci_conn_timeout
ci-upstream-kasan-gce 2022/12/01 18:27 upstream ef4d3ea40565 e080de16 .config log report info WARNING in hci_conn_timeout
ci-qemu-upstream 2022/12/01 18:08 upstream ef4d3ea40565 3b580c21 .config log report info WARNING in hci_conn_timeout
ci-upstream-kasan-gce 2022/12/01 12:31 upstream ef4d3ea40565 4c2a66e8 .config log report info WARNING in hci_conn_timeout
ci-upstream-kasan-gce-smack-root 2022/12/01 07:16 upstream 04aa64375f48 4c2a66e8 .config log report info WARNING in hci_conn_timeout
ci-upstream-kasan-gce-root 2022/12/01 04:10 upstream 04aa64375f48 4c2a66e8 .config log report info WARNING in hci_conn_timeout
ci-upstream-kasan-gce-smack-root 2022/11/30 23:58 upstream 04aa64375f48 4c2a66e8 .config log report info WARNING in hci_conn_timeout
ci-upstream-kasan-gce-root 2022/11/30 19:13 upstream 04aa64375f48 4c2a66e8 .config log report info WARNING in hci_conn_timeout
ci-upstream-kasan-gce-selinux-root 2022/11/30 12:53 upstream 01f856ae6d0c 4c2a66e8 .config log report info WARNING in hci_conn_timeout
ci-upstream-kasan-gce-smack-root 2022/11/30 10:23 upstream 01f856ae6d0c 4c2a66e8 .config log report info WARNING in hci_conn_timeout
ci-upstream-kasan-gce 2022/11/30 09:19 upstream 01f856ae6d0c 4c2a66e8 .config log report info WARNING in hci_conn_timeout
ci-upstream-kasan-gce 2022/11/30 02:11 upstream 01f856ae6d0c 05dc7993 .config log report info WARNING in hci_conn_timeout
ci-upstream-kasan-gce 2022/11/29 23:11 upstream 01f856ae6d0c 05dc7993 .config log report info WARNING in hci_conn_timeout
ci-qemu-upstream 2022/11/29 16:54 upstream ca57f02295f1 05dc7993 .config log report info WARNING in hci_conn_timeout
ci-upstream-kasan-gce-smack-root 2022/11/29 15:54 upstream ca57f02295f1 05dc7993 .config log report info WARNING in hci_conn_timeout
ci-upstream-kasan-gce-smack-root 2022/11/29 13:29 upstream ca57f02295f1 05dc7993 .config log report info WARNING in hci_conn_timeout
ci-qemu-upstream-386 2022/12/05 22:34 upstream 76dcd734eca2 dff7de3a .config log report info WARNING in hci_conn_timeout
ci-qemu-upstream-386 2022/12/05 18:32 upstream 76dcd734eca2 dff7de3a .config log report info WARNING in hci_conn_timeout
ci-qemu-upstream-386 2022/12/05 14:27 upstream 76dcd734eca2 dff7de3a .config log report info WARNING in hci_conn_timeout
ci-upstream-kasan-gce-386 2022/12/04 21:07 upstream c2bf05db6c78 e080de16 .config log report info WARNING in hci_conn_timeout
ci-upstream-kasan-gce-386 2022/12/04 12:13 upstream c2bf05db6c78 e080de16 .config log report info WARNING in hci_conn_timeout
ci-upstream-kasan-gce-386 2022/12/04 11:06 upstream c2bf05db6c78 e080de16 .config log report info WARNING in hci_conn_timeout
ci-qemu-upstream-386 2022/12/04 07:44 upstream c2bf05db6c78 e080de16 .config log report info WARNING in hci_conn_timeout
ci-upstream-kasan-gce-386 2022/12/03 16:39 upstream a4412fdd49dc e080de16 .config log report info WARNING in hci_conn_timeout
ci-upstream-kasan-gce-386 2022/12/02 07:14 upstream 355479c70a48 e080de16 .config log report info WARNING in hci_conn_timeout
ci-qemu-upstream-386 2022/12/02 02:24 upstream a4412fdd49dc e080de16 .config log report info WARNING in hci_conn_timeout
ci-qemu-upstream-386 2022/11/29 08:02 upstream b7b275e60bcd ca9683b8 .config log report info WARNING in hci_conn_timeout
ci-qemu2-arm64-mte 2021/03/08 16:56 upstream 144c79ef3353 09fbf400 .config log report info WARNING in hci_conn_timeout
ci-upstream-linux-next-kasan-gce-root 2022/12/03 21:41 linux-next 9e46a7996732 e080de16 .config log report info WARNING in hci_conn_timeout
ci-upstream-linux-next-kasan-gce-root 2022/12/02 15:56 linux-next 9e46a7996732 e080de16 .config log report info WARNING in hci_conn_timeout
ci-upstream-linux-next-kasan-gce-root 2022/11/30 17:24 linux-next 9e46a7996732 4c2a66e8 .config log report info WARNING in hci_conn_timeout
ci-upstream-gce-arm64 2022/12/05 19:54 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci e3cb714fb489 045cbb84 .config log report info WARNING in hci_conn_timeout
ci-upstream-gce-arm64 2022/12/05 15:48 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci e3cb714fb489 045cbb84 .config log report info WARNING in hci_conn_timeout
ci-upstream-gce-arm64 2022/12/03 07:19 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci e3cb714fb489 e080de16 .config log report info WARNING in hci_conn_timeout
ci-upstream-gce-arm64 2022/12/03 04:07 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci e3cb714fb489 e080de16 .config log report info WARNING in hci_conn_timeout
ci-upstream-gce-arm64 2022/12/02 14:34 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci e3cb714fb489 e080de16 .config log report info WARNING in hci_conn_timeout
ci-upstream-gce-arm64 2022/12/01 15:36 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci cdb931b58ff5 e080de16 .config log report info WARNING in hci_conn_timeout
ci-upstream-gce-arm64 2022/11/30 14:30 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci cdb931b58ff5 4c2a66e8 .config log report info WARNING in hci_conn_timeout
ci-upstream-kasan-gce 2020/12/26 22:20 upstream 40f78232f973 821e0b09 .config log report info
* Struck through repros no longer work on HEAD.