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WARNING in blk_register_tracepoints

Status: upstream: reported C repro on 2022/02/08 05:40
Subsystems: trace block
[Documentation on labels]
Reported-by: syzbot+c54ded83396afee31eb1@syzkaller.appspotmail.com
First crash: 1431d, last: 14d
Cause bisection: the issue happens on the oldest tested release (bisect log)
Crash: WARNING in blk_register_tracepoints (log)
Repro: C syz .config
  
Fix bisection: fixed by (bisect log) :
commit fcaa174a9c995cf0af3967e55644a1543ea07e36
Author: Yu Kuai <yukuai3@huawei.com>
Date: Wed Jun 21 16:01:11 2023 +0000

  scsi/sg: don't grab scsi host module reference

  
▶ ▼ Discussions (29)
Title Replies (including bot) Last reply
[syzbot] Monthly trace report (Dec 2025) 0 (1) 2025/12/22 13:07
[syzbot] Monthly block report (Nov 2025) 0 (1) 2025/11/28 21:21
[syzbot] Monthly trace report (Nov 2025) 0 (1) 2025/11/21 12:34
[syzbot] Monthly trace report (Oct 2025) 0 (1) 2025/10/21 08:02
[syzbot] Monthly trace report (Sep 2025) 0 (1) 2025/09/20 05:04
[syzbot] Monthly trace report (Aug 2025) 0 (1) 2025/08/20 08:11
[syzbot] Monthly trace report (Jul 2025) 0 (1) 2025/07/20 09:04
[syzbot] Monthly trace report (Jun 2025) 0 (1) 2025/06/18 13:02
[syzbot] Monthly trace report (May 2025) 0 (1) 2025/05/19 10:23
[syzbot] Monthly trace report (Apr 2025) 0 (1) 2025/04/17 08:38
[syzbot] Monthly block report (Mar 2025) 0 (1) 2025/03/24 18:56
[syzbot] Monthly trace report (Mar 2025) 0 (1) 2025/03/16 22:21
[syzbot] Monthly trace report (Feb 2025) 0 (1) 2025/02/13 12:34
[syzbot] Monthly block report (Jul 2024) 0 (1) 2024/07/15 11:51
[syzbot] Monthly trace report (Apr 2024) 0 (1) 2024/04/30 07:11
[syzbot] Monthly trace report (Feb 2024) 0 (1) 2024/02/27 09:32
[syzbot] Monthly block report (Feb 2024) 0 (1) 2024/02/09 20:57
[syzbot] Monthly trace report (Jan 2024) 0 (1) 2024/01/26 21:55
[syzbot] Monthly block report (Jan 2024) 0 (1) 2024/01/09 18:20
[syzbot] Monthly trace report (Dec 2023) 0 (1) 2023/12/27 09:18
[syzbot] Monthly block report (Dec 2023) 0 (1) 2023/12/10 10:05
[syzbot] Monthly trace report (Nov 2023) 0 (1) 2023/11/23 13:12
[syzbot] Monthly block report (Oct 2023) 0 (1) 2023/10/09 09:23
[syzbot] Monthly block report (Sep 2023) 0 (1) 2023/09/07 09:25
[syzbot] Monthly block report (Aug 2023) 0 (1) 2023/08/07 07:28
[syzbot] WARNING in blk_register_tracepoints 0 (2) 2023/07/07 22:32
[syzbot] Monthly block report (Jun 2023) 0 (1) 2023/06/07 09:10
[syzbot] Monthly block report (May 2023) 0 (1) 2023/05/05 08:06
[syzbot] Monthly block report 0 (1) 2023/04/03 16:00
▶ ▼ Similar bugs (2)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.14 WARNING in blk_register_tracepoints -1 C error 4 1096d 1423d 0/1 upstream: reported C repro on 2022/02/15 19:12
linux-4.19 WARNING in blk_register_tracepoints -1 C error 4 1090d 1431d 0/1 upstream: reported C repro on 2022/02/07 12:21
▶ ▼ Last patch testing requests (10)
Created Duration User Patch Repo Result
2025/12/25 12:41 14m retest repro upstream error
2025/12/25 12:41 20m retest repro upstream OK log
2025/12/25 12:41 20m retest repro upstream report log
2025/12/25 12:41 15m retest repro upstream report log
2025/12/03 06:36 15m retest repro upstream report log
2025/11/09 14:03 21m retest repro upstream report log
2025/10/09 09:36 41m retest repro upstream report log
2025/09/23 16:27 15m retest repro upstream report log
2025/08/31 13:33 20m retest repro upstream report log
2025/08/03 10:29 24m retest repro upstream OK log
▶ ▼ Fix bisection attempts (9)
Created Duration User Patch Repo Result
2023/07/07 16:30 6h00m bisect fix upstream OK (1) job log
2023/05/30 22:49 37m bisect fix upstream OK (0) job log log
2023/04/30 21:38 36m bisect fix upstream OK (0) job log log
2023/03/04 09:27 34m bisect fix upstream OK (0) job log log
2023/02/02 08:11 27m bisect fix upstream OK (0) job log log
2022/07/26 06:43 37m bisect fix upstream OK (0) job log log
2022/05/10 12:13 35m bisect fix upstream OK (0) job log log
2022/04/08 07:48 21m bisect fix upstream OK (0) job log log
2022/03/09 07:28 19m bisect fix upstream OK (0) job log log

Sample crash report:
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3624fe6038 R14: 00007f3624fe5fa0 R15: 00007ffd9848b148
 </TASK>
------------[ cut here ]------------
WARNING: kernel/trace/blktrace.c:1354 at blk_register_tracepoints+0x3d1/0x430 kernel/trace/blktrace.c:1354, CPU#0: syz.0.25/6074
Modules linked in:
CPU: 0 UID: 0 PID: 6074 Comm: syz.0.25 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:blk_register_tracepoints+0x3d1/0x430 kernel/trace/blktrace.c:1354
Code: 0f 0b 90 e9 e7 fd ff ff e8 bc b9 f7 ff 90 0f 0b 90 e9 06 fe ff ff e8 ae b9 f7 ff 90 0f 0b 90 e9 25 fe ff ff e8 a0 b9 f7 ff 90 <0f> 0b 90 e9 44 fe ff ff e8 92 b9 f7 ff 90 0f 0b 90 e9 63 fe ff ff
RSP: 0018:ffffc90003007b20 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 00000000fffffff4 RCX: ffffffff81c68a95
RDX: ffff88807c8e3d00 RSI: ffffffff81c68c50 RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 00000000fffffff4 R11: 0000000000000000 R12: 200000000040000d
R13: ffffc90003007da8 R14: ffff888026a52fa8 R15: 0000000000000001
FS:  00007f3625cf16c0(0000) GS:ffff888124904000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff45c466f98 CR3: 000000007c414000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 get_probe_ref kernel/trace/blktrace.c:493 [inline]
 blk_trace_setup_finalize+0x336/0x3d0 kernel/trace/blktrace.c:760
 blk_trace_setup+0x200/0x3b0 kernel/trace/blktrace.c:795
 blk_trace_ioctl+0x2ce/0x300 kernel/trace/blktrace.c:935
 blkdev_ioctl+0x1fa/0x6e0 block/ioctl.c:780
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl fs/ioctl.c:583 [inline]
 __x64_sys_ioctl+0x18e/0x210 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3624d8f7c9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f3625cf1038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f3624fe5fa0 RCX: 00007f3624d8f7c9
RDX: 0000200000000240 RSI: 00000000c0481273 RDI: 0000000000000004
RBP: 00007f3624e13f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3624fe6038 R14: 00007f3624fe5fa0 R15: 00007ffd9848b148
 </TASK>

Crashes (101):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/12/10 13:17 upstream 0048fbb4011e d1b870e1 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in blk_register_tracepoints
2025/12/04 15:27 upstream 8f7aa3d3c732 d1b870e1 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in blk_register_tracepoints
2025/09/25 08:50 upstream 4ea5af085908 0abd0691 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in blk_register_tracepoints
2025/09/09 15:57 upstream f777d1112ee5 d291dd2d .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in blk_register_tracepoints
2025/08/11 16:15 upstream 8f5ae30d69d7 32a0e5ed .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in blk_register_tracepoints
2022/12/31 20:52 upstream c8451c141e07 ab32d508 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in blk_register_tracepoints
2025/12/11 12:41 upstream 5c179cac0519 d1b870e1 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in blk_register_tracepoints
2025/12/10 14:32 upstream 0048fbb4011e d1b870e1 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in blk_register_tracepoints
2025/12/10 12:13 upstream 0048fbb4011e d1b870e1 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in blk_register_tracepoints
2025/12/09 12:06 upstream cb015814f8b6 d1b870e1 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in blk_register_tracepoints
2025/12/08 11:53 upstream ba65a4e7120a d1b870e1 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in blk_register_tracepoints
2025/12/06 18:04 upstream 416f99c3b16f d1b870e1 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in blk_register_tracepoints
2025/12/06 00:22 upstream d1d36025a617 d1b870e1 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in blk_register_tracepoints
2025/12/05 21:41 upstream d1d36025a617 d1b870e1 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in blk_register_tracepoints
2025/12/04 14:15 upstream 8f7aa3d3c732 d1b870e1 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in blk_register_tracepoints
2025/11/19 06:34 upstream 5bebe8de1926 ef766cd7 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in blk_register_tracepoints
2025/11/12 20:49 upstream 24172e0d7990 07e030de .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in blk_register_tracepoints
2025/09/25 08:46 upstream 4ea5af085908 0abd0691 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in blk_register_tracepoints
2025/09/25 03:56 upstream 4ea5af085908 0abd0691 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in blk_register_tracepoints
2025/09/09 14:56 upstream f777d1112ee5 d291dd2d .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in blk_register_tracepoints
2025/08/17 13:27 upstream 99bade344cfa 1804e95e .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in blk_register_tracepoints
2025/08/11 12:05 upstream 8f5ae30d69d7 32a0e5ed .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in blk_register_tracepoints
2025/07/20 08:36 upstream f4a40a4282f4 7117feec .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in blk_register_tracepoints
2025/07/16 18:35 upstream 155a3c003e55 124ec9cc .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in blk_register_tracepoints
2025/07/15 14:09 upstream 155a3c003e55 03fcfc4b .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in blk_register_tracepoints
2025/07/12 03:57 upstream 40f92e79b0aa 3cda49cf .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in blk_register_tracepoints
2025/07/06 15:50 upstream 1f988d0788f5 4f67c4ae .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in blk_register_tracepoints
2025/07/05 16:05 upstream a79a588fc176 4f67c4ae .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in blk_register_tracepoints
2025/07/05 11:29 upstream c435a4f487e8 4f67c4ae .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in blk_register_tracepoints
2025/07/03 14:17 upstream b4911fb0b060 a3c808e4 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in blk_register_tracepoints
2025/07/03 11:34 upstream b4911fb0b060 115ceea7 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in blk_register_tracepoints
2025/07/03 01:58 upstream b4911fb0b060 115ceea7 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in blk_register_tracepoints
2025/06/30 22:53 upstream d0b3b7b22dfa 6e83b42d .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in blk_register_tracepoints
2025/06/30 12:37 upstream d0b3b7b22dfa fc9d8ee5 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in blk_register_tracepoints
2025/06/29 23:45 upstream afa9a6f4f574 fc9d8ee5 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in blk_register_tracepoints
2025/06/28 07:20 upstream 35e261cd95dd fc9d8ee5 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in blk_register_tracepoints
2025/06/27 07:58 upstream f02769e7f272 803ce19b .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in blk_register_tracepoints
2025/06/23 18:13 upstream 86731a2a651e 1a7fb460 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in blk_register_tracepoints
2025/06/23 12:51 upstream 86731a2a651e d6cdfb8a .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in blk_register_tracepoints
2025/06/23 08:09 upstream b67ec639010f d6cdfb8a .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in blk_register_tracepoints
2025/06/22 15:31 upstream 739a6c93cc75 d6cdfb8a .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in blk_register_tracepoints
2025/06/22 05:06 upstream 739a6c93cc75 d6cdfb8a .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in blk_register_tracepoints
2025/06/16 22:59 upstream e04c78d86a96 d1716036 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in blk_register_tracepoints
2025/06/11 11:08 upstream aef17cb3d3c4 5d7e17ca .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in blk_register_tracepoints
2025/06/07 01:25 upstream c0c9379f235d 4826c28e .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in blk_register_tracepoints
2025/05/07 04:47 upstream 0d8d44db295c 350f4ffc .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in blk_register_tracepoints
2025/04/15 02:22 upstream 834a4a689699 0bd6db41 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in blk_register_tracepoints
2025/04/11 09:02 upstream 0c7cae12f67c 94486846 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in blk_register_tracepoints
2025/04/10 09:57 upstream 3b07108ada81 988b336c .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in blk_register_tracepoints
2023/10/28 12:22 upstream 888cf78c29e2 3c418d72 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in blk_register_tracepoints
2023/08/23 22:46 upstream a5e505a99ca7 4d7ae7ab .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in blk_register_tracepoints
2023/08/05 08:53 upstream e6fda526d9db 4ffcc9ef .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root WARNING in blk_register_tracepoints
2022/06/07 19:17 upstream e71e60cd74df c8857892 .config console log report syz C ci-upstream-kasan-gce WARNING in blk_register_tracepoints
2022/06/05 10:27 upstream 952923ddc011 c8857892 .config strace log report syz C ci-upstream-kasan-gce-root WARNING in blk_register_tracepoints
2022/02/07 07:28 upstream d8ad2ce873ab a7dab638 .config console log report syz C ci-upstream-kasan-gce WARNING in blk_register_tracepoints
2022/02/07 06:57 upstream d8ad2ce873ab a7dab638 .config console log report syz C ci-upstream-kasan-gce-root WARNING in blk_register_tracepoints
2023/11/17 00:59 upstream 7475e51b8796 cb976f63 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 WARNING in blk_register_tracepoints
2024/11/08 02:27 upstream 906bd684e4b1 179b040e .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in blk_register_tracepoints
2024/11/08 02:04 upstream 906bd684e4b1 179b040e .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in blk_register_tracepoints
2023/08/05 08:37 upstream e6fda526d9db 4ffcc9ef .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root WARNING in blk_register_tracepoints
2022/12/31 20:30 upstream c8451c141e07 ab32d508 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in blk_register_tracepoints
2022/10/29 02:46 upstream b229b6ca5abb ea12ae9b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in blk_register_tracepoints
2022/08/10 12:31 upstream 200e340f2196 c2a623d6 .config console log report info ci-upstream-kasan-gce-selinux-root WARNING in blk_register_tracepoints
2022/02/07 06:45 upstream d8ad2ce873ab a7dab638 .config console log report info ci-upstream-kasan-gce-root WARNING in blk_register_tracepoints
2022/12/13 00:49 upstream 830b3c68c1fb 67be1ae7 .config console log report info ci-qemu-upstream-386 WARNING in blk_register_tracepoints
2023/03/31 21:37 linux-next 4b0f4525dc4f f325deb0 .config strace log report syz [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in blk_register_tracepoints
2022/08/27 23:02 linux-next 8d0c42c9e807 07177916 .config strace log report syz C ci-upstream-linux-next-kasan-gce-root WARNING in blk_register_tracepoints
2022/06/26 04:19 linux-next 2f9cb3d3bd73 a371c43c .config strace log report syz C ci-upstream-linux-next-kasan-gce-root WARNING in blk_register_tracepoints
2022/08/08 18:10 linux-next ca688bff68bc 88e3a122 .config console log report info ci-upstream-linux-next-kasan-gce-root WARNING in blk_register_tracepoints
* Struck through repros no longer work on HEAD.