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WARNING in hci_conn_timeout

Status: upstream: reported C repro on 2020/08/01 18:55
Subsystems: bluetooth (incorrect?)
Reported-by: syzbot+2446dd3cb07277388db6@syzkaller.appspotmail.com
First crash: 963d, last: now

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 (4):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-5.15 WARNING in hci_conn_timeout C 7 2d19h 12d 0/3 upstream: reported C repro on 2023/03/10 14:50
linux-4.14 WARNING in hci_conn_timeout C inconclusive 27 31d 965d 0/1 upstream: reported C repro on 2020/07/31 02:13
linux-4.19 WARNING in hci_conn_timeout C error 127 17d 963d 0/1 upstream: reported C repro on 2020/08/01 17:09
linux-6.1 WARNING in hci_conn_timeout C 40 4h52m 14d 0/3 upstream: reported C repro on 2023/03/08 17:34

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 5084 at net/bluetooth/hci_conn.c:646 hci_conn_timeout+0x303/0x4f0 net/bluetooth/hci_conn.c:646
Modules linked in:
CPU: 1 PID: 5084 Comm: kworker/u5:2 Not tainted 6.3.0-rc2-syzkaller-00069-g0ddc84d2dd43 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Workqueue: hci0 hci_conn_timeout
RIP: 0010:hci_conn_timeout+0x303/0x4f0 net/bluetooth/hci_conn.c:646
Code: 71 8b e8 60 35 77 f8 4c 89 f1 4c 89 e2 48 c7 c6 20 82 71 8b 48 c7 c7 c0 ac 73 8e e8 67 bc 2f fb e9 6a fd ff ff e8 3d 35 77 f8 <0f> 0b e9 8a fd ff ff 84 c0 0f 84 e0 fe ff ff 4c 89 ef e8 16 3e c8
RSP: 0018:ffffc90003c9fce0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff88807819e250 RCX: 0000000000000000
RDX: ffff88807c64d7c0 RSI: ffffffff890bafc3 RDI: 0000000000000005
RBP: 00000000ffffea3a R08: 0000000000000005 R09: 0000000000000000
R10: 00000000ffffea3a R11: 1ffffffff217991f R12: ffff88807819e000
R13: ffff88807819e260 R14: ffff8880173bfa00 R15: ffff888017fc0000
FS:  0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000000 CR3: 000000002098b000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 process_one_work+0x991/0x15c0 kernel/workqueue.c:2390
 worker_thread+0x669/0x1090 kernel/workqueue.c:2537
 kthread+0x2e8/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>

Fix bisection attempts:
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets Title
ci-upstream-kasan-gce-smack-root 2022/04/19 20:55 upstream 559089e0a93d e2d91b1d .config console log report syz C
ci-upstream-kasan-gce 2021/12/09 17:18 upstream 2a987e65025e 7eb7e152 .config console log report syz C
ci-upstream-kasan-gce-selinux-root 2021/05/08 10:20 upstream dd860052c99b 79fb24e2 .config console log report syz C
ci-upstream-kasan-gce-selinux-root 2021/04/08 09:57 upstream 454859c552da 79fb24e2 .config console log report syz C
ci-upstream-kasan-gce-selinux-root 2021/03/03 17:31 upstream f69d02e37a85 79fb24e2 .config console log report syz C
ci-upstream-kasan-gce-selinux-root 2021/01/25 22:58 upstream f8ad8187c3b5 79fb24e2 .config console log report syz C
* Struck through repros no longer work on HEAD.
Crashes (2622):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets Title
ci-upstream-kasan-gce 2023/03/17 02:32 upstream 0ddc84d2dd43 18b58603 .config strace log report syz C [disk image] [vmlinux] [kernel image] WARNING in hci_conn_timeout
ci-upstream-kasan-gce-selinux-root 2023/02/22 07:16 upstream 4a7d37e824f5 42a4d508 .config strace log report syz C [disk image] [vmlinux] [kernel image] WARNING in hci_conn_timeout
ci-upstream-kasan-gce 2023/02/17 23:16 upstream ec35307e18ba 3e7039f4 .config strace log report syz C [disk image] [vmlinux] [kernel image] WARNING in hci_conn_timeout
ci-upstream-kasan-gce-root 2023/01/16 06:38 upstream 5dc4c995db9e a63719e7 .config strace log report syz C [disk image] [vmlinux] [kernel image] WARNING in hci_conn_timeout
ci-upstream-kasan-gce-smack-root 2023/01/01 14:54 upstream e4cf7c25bae5 ab32d508 .config strace log report syz C [disk image] [vmlinux] [kernel image] WARNING in hci_conn_timeout
ci-upstream-kasan-gce 2022/12/13 13:51 upstream 3a28c2c89f4b 67be1ae7 .config strace log report syz C [disk image] [vmlinux] [kernel image] WARNING in hci_conn_timeout
ci-upstream-kasan-gce-smack-root 2022/12/13 12:17 upstream 3a28c2c89f4b 67be1ae7 .config strace log report syz C [disk image] [vmlinux] [kernel image] WARNING in hci_conn_timeout
ci-upstream-kasan-gce-selinux-root 2022/12/08 19:50 upstream 479174d402bc 1034e5fa .config strace log report syz C [disk image] [vmlinux] [kernel image] WARNING in hci_conn_timeout
ci-upstream-kasan-gce-root 2022/10/20 13:42 upstream 55be6084c8e0 b31320fc .config strace log report syz C [disk image] [vmlinux] WARNING in hci_conn_timeout
ci-upstream-kasan-gce 2022/10/10 16:50 upstream 4899a36f91a9 aea5da89 .config strace log report syz C [disk image] [vmlinux] WARNING in hci_conn_timeout
ci-upstream-kasan-gce 2022/08/12 10:49 upstream 7ebfc85e2cd7 402cd70d .config strace log report syz C WARNING in hci_conn_timeout
ci-upstream-kasan-gce-selinux-root 2022/07/14 20:23 upstream 4a57a8400075 5d921b08 .config strace log report syz C WARNING in hci_conn_timeout
ci-qemu-upstream 2022/06/15 22:58 upstream 018ab4fabddd 1719ee24 .config console log report syz C WARNING in hci_conn_timeout
ci-upstream-kasan-gce-smack-root 2022/06/13 20:27 upstream b13baccc3850 0d5abf15 .config strace log report syz C WARNING in hci_conn_timeout
ci-qemu-upstream 2022/05/08 10:49 upstream 30c8e80f7932 e60b1103 .config console log report syz C WARNING in hci_conn_timeout
ci-upstream-kasan-gce-root 2022/04/24 22:13 upstream 22da5264abf4 131df97d .config console log report syz C WARNING in hci_conn_timeout
ci-upstream-kasan-gce-smack-root 2022/03/18 19:34 upstream 551acdc3c3d2 e2d91b1d .config console log report syz C WARNING in hci_conn_timeout
ci-upstream-kasan-gce-root 2022/02/26 01:15 upstream 53ab78cd6d5a 45a13a73 .config console log report syz C WARNING in hci_conn_timeout
ci-upstream-kasan-gce 2021/09/02 10:22 upstream 835d31d319d9 7eb7e152 .config console log report syz C WARNING in hci_conn_timeout
ci-upstream-linux-next-kasan-gce-root 2023/02/01 04:34 linux-next 80bd9028feca 9dfcf09c .config strace log report syz C [disk image] [vmlinux] [kernel image] WARNING in hci_conn_timeout
ci-upstream-linux-next-kasan-gce-root 2022/12/20 20:28 linux-next e45fb347b630 d3e76707 .config strace log report syz C [disk image] [vmlinux] [kernel image] WARNING in hci_conn_timeout
ci-upstream-linux-next-kasan-gce-root 2022/11/19 22:47 linux-next 15f3bff12cf6 5bb70014 .config strace log report syz C [disk image] [vmlinux] [kernel image] WARNING in hci_conn_timeout
ci-upstream-linux-next-kasan-gce-root 2022/10/05 07:49 linux-next aaa11ce2ffc8 eab8f949 .config strace log report syz C [disk image] [vmlinux] WARNING in hci_conn_timeout
ci-upstream-linux-next-kasan-gce-root 2022/06/10 03:09 linux-next ff539ac73ea5 0d5abf15 .config strace 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 console log report syz C WARNING in hci_conn_timeout
ci-upstream-gce-arm64 2023/03/17 03:55 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e 18b58603 .config console log report syz C [disk image] [vmlinux] [kernel image] WARNING in hci_conn_timeout
ci-upstream-gce-arm64 2023/03/11 05:37 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e 5205ef30 .config console log report syz C [disk image] [vmlinux] [kernel image] WARNING in hci_conn_timeout
ci-upstream-gce-arm64 2023/02/18 03:41 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 2d3827b3f393 3e7039f4 .config console log report syz C [disk image] [vmlinux] [kernel image] WARNING in hci_conn_timeout
ci-upstream-gce-arm64 2022/12/13 13:34 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci a5541c0811a0 67be1ae7 .config console log report syz C [disk image] [vmlinux] [kernel image] 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 console log report syz C [disk image] [vmlinux] [kernel image] 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 console log report syz C [disk image] [vmlinux] WARNING in hci_conn_timeout
ci-upstream-kasan-gce-selinux-root 2020/09/12 06:32 upstream e8878ab82545 79fb24e2 .config console log report syz C
ci-upstream-kasan-gce-root 2020/09/11 04:54 upstream 7fe10096c150 409809d8 .config console log report syz C
ci-upstream-kasan-gce-smack-root 2020/09/07 06:25 upstream a8205e310011 abf9ba4f .config console log report syz C
ci-upstream-kasan-gce 2020/09/06 17:53 upstream dd9fb9bb3340 abf9ba4f .config console log report syz C
ci-upstream-kasan-gce 2020/08/14 03:03 upstream 990f227371a4 54ce1ed6 .config console log report syz C
ci-upstream-kasan-gce-smack-root 2020/08/01 16:24 upstream 7dc6fd0f3b84 d895b3be .config console log report syz C
ci-upstream-kasan-gce-386 2020/09/06 21:42 upstream dd9fb9bb3340 abf9ba4f .config console log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/09/24 21:57 linux-next d1d2220c7f39 54289b08 .config console log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/08/05 18:50 linux-next 01830e6c042e b7129355 .config console log report syz C
ci-upstream-kasan-gce 2023/03/23 07:40 upstream fff5a5e7f528 f94b4a29 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in hci_conn_timeout
ci-upstream-kasan-gce-smack-root 2023/03/23 03:24 upstream fff5a5e7f528 f94b4a29 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in hci_conn_timeout
ci-qemu-upstream 2023/03/22 22:41 upstream fff5a5e7f528 f94b4a29 .config console log report info WARNING in hci_conn_timeout
ci-qemu-upstream 2023/03/22 13:48 upstream a1effab7a3a3 d846e076 .config console log report info WARNING in hci_conn_timeout
ci-upstream-kasan-gce 2023/03/22 01:54 upstream 2faac9a98f01 8b4eb097 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in hci_conn_timeout
ci-qemu-upstream 2023/03/21 22:35 upstream 2faac9a98f01 8b4eb097 .config console log report info WARNING in hci_conn_timeout
ci-qemu-upstream 2023/03/21 02:52 upstream 7d31677bb7b1 7939252e .config console log report info WARNING in hci_conn_timeout
ci-qemu-upstream 2023/03/21 00:45 upstream 7d31677bb7b1 7939252e .config console log report info WARNING in hci_conn_timeout
ci-upstream-kasan-gce-smack-root 2023/03/20 23:23 upstream 7d31677bb7b1 7939252e .config console log report info [disk image] [vmlinux] [kernel image] WARNING in hci_conn_timeout
ci-upstream-kasan-gce 2023/03/20 15:52 upstream e8d018dd0257 7939252e .config console log report info [disk image] [vmlinux] [kernel image] WARNING in hci_conn_timeout
ci-upstream-kasan-gce 2023/03/20 09:37 upstream e8d018dd0257 7939252e .config console log report info [disk image] [vmlinux] [kernel image] WARNING in hci_conn_timeout
ci-upstream-kasan-gce-smack-root 2023/03/19 22:35 upstream 5cdfdd6da323 7939252e .config console log report info [disk image] [vmlinux] [kernel image] WARNING in hci_conn_timeout
ci-upstream-kasan-gce 2023/03/19 17:27 upstream a3671bd86a97 7939252e .config console log report info [disk image] [vmlinux] [kernel image] WARNING in hci_conn_timeout
ci-qemu-upstream 2023/03/19 02:43 upstream 534293368afa 7939252e .config console log report info WARNING in hci_conn_timeout
ci-qemu-upstream 2023/03/18 10:21 upstream 478a351ce0d6 7939252e .config console log report info WARNING in hci_conn_timeout
ci-upstream-kasan-gce-smack-root 2023/03/18 08:30 upstream 8d3c682a5e3d 7939252e .config console log report info [disk image] [vmlinux] [kernel image] WARNING in hci_conn_timeout
ci-qemu-upstream 2023/03/17 23:13 upstream cb80b960ce44 7939252e .config console log report info WARNING in hci_conn_timeout
ci-qemu-upstream 2023/03/17 16:41 upstream 38e04b3e4240 18b58603 .config console log report info WARNING in hci_conn_timeout
ci-upstream-kasan-gce-root 2023/03/17 10:16 upstream 38e04b3e4240 18b58603 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in hci_conn_timeout
ci-upstream-kasan-gce-smack-root 2023/03/17 00:42 upstream 0ddc84d2dd43 18b58603 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in hci_conn_timeout
ci-upstream-kasan-gce 2023/03/16 23:40 upstream 0ddc84d2dd43 18b58603 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in hci_conn_timeout
ci-upstream-kasan-gce 2023/03/16 21:01 upstream 0ddc84d2dd43 18b58603 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in hci_conn_timeout
ci-upstream-kasan-gce-selinux-root 2023/03/14 11:45 upstream fc89d7fb499b 0d5c4377 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in hci_conn_timeout
ci-qemu-upstream-386 2023/03/23 01:26 upstream fff5a5e7f528 f94b4a29 .config console log report info WARNING in hci_conn_timeout
ci-qemu-upstream-386 2023/03/22 04:22 upstream 2faac9a98f01 8b4eb097 .config console log report info WARNING in hci_conn_timeout
ci-upstream-kasan-gce-386 2023/03/20 11:58 upstream e8d018dd0257 7939252e .config console log report info [disk image] [vmlinux] [kernel image] WARNING in hci_conn_timeout
ci-qemu-upstream-386 2023/03/19 15:32 upstream a3671bd86a97 7939252e .config console log report info WARNING in hci_conn_timeout
ci-upstream-kasan-gce-386 2023/03/18 13:42 upstream 478a351ce0d6 7939252e .config console log report info [disk image] [vmlinux] [kernel image] WARNING in hci_conn_timeout
ci-upstream-kasan-gce-386 2023/03/18 11:35 upstream 478a351ce0d6 7939252e .config console log report info [disk image] [vmlinux] [kernel image] WARNING in hci_conn_timeout
ci-upstream-kasan-gce-386 2023/03/18 04:25 upstream 8d3c682a5e3d 7939252e .config console log report info [disk image] [vmlinux] [kernel image] WARNING in hci_conn_timeout
ci-qemu-upstream-386 2023/03/17 18:24 upstream 38e04b3e4240 7939252e .config console log report info WARNING in hci_conn_timeout
ci-upstream-kasan-gce-386 2023/03/17 13:03 upstream 38e04b3e4240 18b58603 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in hci_conn_timeout
ci-upstream-kasan-gce-386 2023/03/16 22:11 upstream 0ddc84d2dd43 18b58603 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in hci_conn_timeout
ci-qemu2-arm64-mte 2021/03/08 16:56 upstream 144c79ef3353 09fbf400 .config console log report info WARNING in hci_conn_timeout
ci-upstream-linux-next-kasan-gce-root 2023/03/21 21:14 linux-next f3594f0204b7 03fb9538 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in hci_conn_timeout
ci-upstream-linux-next-kasan-gce-root 2023/03/21 17:15 linux-next f3594f0204b7 03fb9538 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in hci_conn_timeout
ci-upstream-linux-next-kasan-gce-root 2023/03/20 10:47 linux-next 73f2c2a7e1d2 7939252e .config console log report info [disk image] [vmlinux] [kernel image] WARNING in hci_conn_timeout
ci-upstream-linux-next-kasan-gce-root 2023/03/18 01:27 linux-next 6f08c1de13a9 7939252e .config console log report info [disk image] [vmlinux] [kernel image] WARNING in hci_conn_timeout
ci-upstream-linux-next-kasan-gce-root 2023/03/16 15:09 linux-next 6f72958a49f6 18b58603 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in hci_conn_timeout
ci-upstream-linux-next-kasan-gce-root 2023/03/16 09:15 linux-next 6f72958a49f6 18b58603 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in hci_conn_timeout
ci-upstream-gce-arm64 2023/03/22 23:49 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e f94b4a29 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in hci_conn_timeout
ci-upstream-gce-arm64 2023/03/22 15:51 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e d846e076 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in hci_conn_timeout
ci-upstream-gce-arm64 2023/03/22 12:26 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e d846e076 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in hci_conn_timeout
ci-upstream-gce-arm64 2023/03/22 11:23 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e d846e076 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in hci_conn_timeout
ci-upstream-gce-arm64 2023/03/22 07:35 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e 8b4eb097 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in hci_conn_timeout
ci-upstream-gce-arm64 2023/03/22 00:40 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e 8b4eb097 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in hci_conn_timeout
ci-upstream-gce-arm64 2023/03/22 00:07 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e 8b4eb097 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in hci_conn_timeout
ci-upstream-gce-arm64 2023/03/21 15:59 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e 03fb9538 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in hci_conn_timeout
ci-upstream-gce-arm64 2023/03/21 12:56 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e 03fb9538 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in hci_conn_timeout
ci-upstream-gce-arm64 2023/03/21 11:50 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e 03fb9538 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in hci_conn_timeout
ci-upstream-gce-arm64 2023/03/21 10:00 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e 03fb9538 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in hci_conn_timeout
ci-upstream-gce-arm64 2023/03/17 02:19 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e 18b58603 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in hci_conn_timeout
ci-upstream-kasan-gce 2020/12/26 22:20 upstream 40f78232f973 821e0b09 .config console log report info
* Struck through repros no longer work on HEAD.