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BUG: corrupted list in loop_process_work

Status: auto-obsoleted due to no activity on 2025/07/31 07:30
Subsystems: block
[Documentation on labels]
Reported-by: syzbot+c104904eeb2c0edbdb06@syzkaller.appspotmail.com
First crash: 264d, last: 250d
Cause bisection: introduced by (bisect log) :
commit 3bee991f2b68175c828dc3f9c26367fe1827319a
Author: Zhaoyang Huang <zhaoyang.huang@unisoc.com>
Date: Fri Feb 7 09:19:42 2025 +0000

  loop: release the lo_work_lock before queue_work

Crash: BUG: corrupted list in loop_process_work (log)
Repro: C syz .config
  
▶ ▼ Discussions (2)
Title Replies (including bot) Last reply
Re: reply: [syzbot] [block?] BUG: corrupted list in loop_process_work 2 (2) 2025/02/18 03:33
[syzbot] [block?] BUG: corrupted list in loop_process_work 1 (3) 2025/02/16 02:00
▶ ▼ Similar bugs (2)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream general protection fault in loop_process_work (2) block 2 1 742d 738d 0/29 auto-obsoleted due to no activity on 2024/01/21 18:59
upstream general protection fault in loop_process_work block 2 1 850d 846d 0/29 auto-obsoleted due to no activity on 2023/10/06 02:37
▶ ▼ Last patch testing requests (11)
Created Duration User Patch Repo Result
2025/07/31 05:46 25m retest repro linux-next OK log
2025/07/31 05:46 25m retest repro linux-next OK log
2025/07/31 05:46 50m retest repro linux-next OK log
2025/05/22 16:41 40m retest repro linux-next OK log
2025/05/22 16:41 40m retest repro linux-next OK log
2025/05/22 16:41 1h51m retest repro linux-next OK log
2025/05/22 10:36 54m retest repro linux-next OK log
2025/05/22 10:36 42m retest repro linux-next OK log
2025/05/22 10:36 30m retest repro linux-next OK log
2025/05/22 10:36 34m retest repro linux-next OK log
2025/02/15 23:40 2h06m hdanton@sina.com patch linux-next OK log

Sample crash report:
list_add double add: new=ffff888020715d70, prev=ffff888020715d70, next=ffff888020fdf160.
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:37!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI
CPU: 1 UID: 0 PID: 6347 Comm: kworker/u8:10 Not tainted 6.14.0-rc3-next-20250218-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: loop1 loop_workfn
RIP: 0010:__list_add_valid_or_report+0xa4/0x130 lib/list_debug.c:35
Code: f7 74 11 b0 01 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc 48 c7 c7 a0 59 81 8c 4c 89 fe 4c 89 e2 4c 89 f1 e8 0d e8 27 fc 90 <0f> 0b 48 c7 c7 a0 57 81 8c e8 fe e7 27 fc 90 0f 0b 48 c7 c7 40 58
RSP: 0018:ffffc9000e037628 EFLAGS: 00010046
RAX: 0000000000000058 RBX: 1ffff110040e2bae RCX: 8168592be62b7a00
RDX: 0000000000000000 RSI: 0000000080000001 RDI: 0000000000000000
RBP: 1ffff110041fbe2d R08: ffffffff81a170dc R09: 1ffff92001c06e60
R10: dffffc0000000000 R11: fffff52001c06e61 R12: ffff888020715d70
R13: dffffc0000000000 R14: ffff888020fdf160 R15: ffff888020715d70
FS:  0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f079bbd4f98 CR3: 000000004ca66000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __list_add_valid include/linux/list.h:88 [inline]
 __list_add include/linux/list.h:150 [inline]
 list_add_tail include/linux/list.h:183 [inline]
 loop_process_work+0x1f96/0x21c0 drivers/block/loop.c:1977
 process_one_work kernel/workqueue.c:3238 [inline]
 process_scheduled_works+0xabe/0x18e0 kernel/workqueue.c:3319
 worker_thread+0x870/0xd30 kernel/workqueue.c:3400
 kthread+0x7a9/0x920 kernel/kthread.c:464
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_add_valid_or_report+0xa4/0x130 lib/list_debug.c:35
Code: f7 74 11 b0 01 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc 48 c7 c7 a0 59 81 8c 4c 89 fe 4c 89 e2 4c 89 f1 e8 0d e8 27 fc 90 <0f> 0b 48 c7 c7 a0 57 81 8c e8 fe e7 27 fc 90 0f 0b 48 c7 c7 40 58
RSP: 0018:ffffc9000e037628 EFLAGS: 00010046
RAX: 0000000000000058 RBX: 1ffff110040e2bae RCX: 8168592be62b7a00
RDX: 0000000000000000 RSI: 0000000080000001 RDI: 0000000000000000
RBP: 1ffff110041fbe2d R08: ffffffff81a170dc R09: 1ffff92001c06e60
R10: dffffc0000000000 R11: fffff52001c06e61 R12: ffff888020715d70
R13: dffffc0000000000 R14: ffff888020fdf160 R15: ffff888020715d70
FS:  0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f079bbd4f98 CR3: 000000004ca66000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (1809):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/02/26 16:54 linux-next e5d3fd687aac d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/26 15:48 linux-next e5d3fd687aac d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/26 15:35 linux-next e5d3fd687aac d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/26 14:28 linux-next e5d3fd687aac d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/26 13:27 linux-next e5d3fd687aac d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/26 12:15 linux-next e5d3fd687aac d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/26 11:10 linux-next e5d3fd687aac d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/26 10:31 linux-next e5d3fd687aac d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/26 09:26 linux-next e5d3fd687aac d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/26 07:54 linux-next e5d3fd687aac d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/26 06:49 linux-next e5d3fd687aac d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/26 06:01 linux-next e5d3fd687aac d34966d1 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/26 04:43 linux-next e5d3fd687aac d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/26 03:33 linux-next e5d3fd687aac d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/26 02:10 linux-next e5d3fd687aac d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/26 01:57 linux-next e5d3fd687aac d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/26 00:40 linux-next e5d3fd687aac d34966d1 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/25 23:25 linux-next e5d3fd687aac d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/25 22:09 linux-next e5d3fd687aac d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/25 21:04 linux-next e5d3fd687aac d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/25 20:33 linux-next e5d3fd687aac d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/25 19:33 linux-next e5d3fd687aac d34966d1 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/25 19:29 linux-next e5d3fd687aac d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/25 18:27 linux-next e5d3fd687aac d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/25 18:06 linux-next e5d3fd687aac d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/25 16:52 linux-next e5d3fd687aac d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/25 15:52 linux-next e5d3fd687aac d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/25 14:52 linux-next e5d3fd687aac d34966d1 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/25 14:17 linux-next e5d3fd687aac d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/25 12:24 linux-next e5d3fd687aac d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/25 11:20 linux-next e5d3fd687aac d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/25 10:54 linux-next e5d3fd687aac d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/25 09:54 linux-next e5d3fd687aac d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/25 08:22 linux-next e5d3fd687aac d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/25 07:10 linux-next e5d3fd687aac d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/25 07:09 linux-next e5d3fd687aac d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/25 06:05 linux-next e5d3fd687aac d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/25 05:00 linux-next e5d3fd687aac d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/25 04:50 linux-next e5d3fd687aac d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/25 03:35 linux-next e5d3fd687aac d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/25 02:34 linux-next e5d3fd687aac d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/25 01:38 linux-next e5d3fd687aac d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/24 23:32 linux-next e5d3fd687aac d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/24 22:28 linux-next e5d3fd687aac d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/24 21:47 linux-next e5d3fd687aac d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/24 20:29 linux-next e5d3fd687aac d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/24 18:55 linux-next e5d3fd687aac d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/24 10:04 linux-next e5d3fd687aac d34966d1 .config console log report syz / log [disk image] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/23 03:33 linux-next e5d3fd687aac d34966d1 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/23 00:45 linux-next e5d3fd687aac d34966d1 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/22 21:46 linux-next e5d3fd687aac d34966d1 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/22 13:33 linux-next e5d3fd687aac d34966d1 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/21 19:30 linux-next e5d3fd687aac 0808a665 .config console log report syz / log [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/19 09:48 linux-next e5d3fd687aac 9a14138f .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/18 17:03 linux-next e5d3fd687aac c37c7249 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/17 23:09 linux-next 253c82b3a2ce 9be4ace3 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/17 07:46 linux-next 0ae0fa3bf0b4 40a34ec9 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/17 05:51 linux-next 0ae0fa3bf0b4 40a34ec9 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/17 04:13 linux-next 0ae0fa3bf0b4 40a34ec9 .config console log report syz / log [disk image] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/17 00:04 linux-next 0ae0fa3bf0b4 40a34ec9 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/16 13:39 linux-next 0ae0fa3bf0b4 40a34ec9 .config console log report syz / log [disk image] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/15 23:11 linux-next 0ae0fa3bf0b4 40a34ec9 .config console log report syz / log [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/14 10:11 linux-next 7b7a883c7f4d d9a046cf .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/12 22:51 linux-next c674aa7c289e b27c2402 .config console log report syz / log [disk image] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/12 12:51 linux-next c674aa7c289e f2baddf5 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/12 12:21 linux-next c674aa7c289e f2baddf5 .config console log report syz / log [disk image] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
* Struck through repros no longer work on HEAD.