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BUG: corrupted list in loop_process_work

Status: upstream: reported C repro on 2025/02/14 19:58
Subsystems: block
[Documentation on labels]
Reported-by: syzbot+c104904eeb2c0edbdb06@syzkaller.appspotmail.com
First crash: 8d22h, last: 11m
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 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream general protection fault in loop_process_work (2) block 1 486d 482d 0/28 auto-obsoleted due to no activity on 2024/01/21 18:59
upstream general protection fault in loop_process_work block 1 594d 590d 0/28 auto-obsoleted due to no activity on 2023/10/06 02:37
▶ ▼ Last patch testing requests (1)
Created Duration User Patch Repo Result
2025/02/15 23:40 2h06m hdanton@sina.com patch linux-next OK log

Sample crash report:
list_add double add: new=ffff8880293d2270, prev=ffff8880293d2270, next=ffff88802136e960.
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:37!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI
CPU: 0 UID: 0 PID: 1089 Comm: kworker/u8:6 Not tainted 6.14.0-rc3-next-20250218-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
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:ffffc90003ae7628 EFLAGS: 00010046
RAX: 0000000000000058 RBX: 1ffff1100527a44e RCX: db3d079ac8b03400
RDX: 0000000000000000 RSI: 0000000080000001 RDI: 0000000000000000
RBP: 1ffff1100426dd2d R08: ffffffff81a170dc R09: 1ffff9200075ce60
R10: dffffc0000000000 R11: fffff5200075ce61 R12: ffff8880293d2270
R13: dffffc0000000000 R14: ffff88802136e960 R15: ffff8880293d2270
FS:  0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000000299c6000 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:ffffc90003ae7628 EFLAGS: 00010046
RAX: 0000000000000058 RBX: 1ffff1100527a44e RCX: db3d079ac8b03400
RDX: 0000000000000000 RSI: 0000000080000001 RDI: 0000000000000000
RBP: 1ffff1100426dd2d R08: ffffffff81a170dc R09: 1ffff9200075ce60
R10: dffffc0000000000 R11: fffff5200075ce61 R12: ffff8880293d2270
R13: dffffc0000000000 R14: ffff88802136e960 R15: ffff8880293d2270
FS:  0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000000299c6000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (1196):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
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 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
2025/02/14 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 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
2025/02/17 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
2025/02/16 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
2025/02/12 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 12:21 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
2025/02/21 05:01 linux-next e5d3fd687aac 0808a665 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/21 03:19 linux-next e5d3fd687aac 0808a665 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/21 02:19 linux-next e5d3fd687aac 0808a665 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/21 01:52 linux-next e5d3fd687aac 0808a665 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/21 00:49 linux-next e5d3fd687aac 50668798 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/20 23:46 linux-next e5d3fd687aac 50668798 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/20 22:39 linux-next e5d3fd687aac 50668798 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/20 22:05 linux-next e5d3fd687aac 50668798 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/20 21:03 linux-next e5d3fd687aac 50668798 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/20 20:01 linux-next e5d3fd687aac 50668798 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/20 18:59 linux-next e5d3fd687aac 50668798 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/20 18:47 linux-next e5d3fd687aac 50668798 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/20 17:42 linux-next e5d3fd687aac 50668798 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/20 15:08 linux-next e5d3fd687aac 50668798 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/20 13:22 linux-next e5d3fd687aac 50668798 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/20 11:49 linux-next e5d3fd687aac 50668798 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/20 10:38 linux-next e5d3fd687aac 50668798 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/20 08:53 linux-next e5d3fd687aac 50668798 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/20 08:49 linux-next e5d3fd687aac 50668798 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/20 07:46 linux-next e5d3fd687aac 50668798 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/20 06:35 linux-next e5d3fd687aac cbd8edab .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/20 06:01 linux-next e5d3fd687aac cbd8edab .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/20 04:40 linux-next e5d3fd687aac cbd8edab .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/20 01:54 linux-next e5d3fd687aac cbd8edab .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/19 22:59 linux-next e5d3fd687aac cbd8edab .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/19 21:57 linux-next e5d3fd687aac cbd8edab .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/19 21:07 linux-next e5d3fd687aac cbd8edab .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/19 19:54 linux-next e5d3fd687aac cbd8edab .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/19 18:43 linux-next e5d3fd687aac cbd8edab .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/19 17:42 linux-next e5d3fd687aac cbd8edab .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/19 16:15 linux-next e5d3fd687aac cbd8edab .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/19 15:05 linux-next e5d3fd687aac cbd8edab .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/19 14:52 linux-next e5d3fd687aac cbd8edab .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/19 13:47 linux-next e5d3fd687aac 9a14138f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/19 12:21 linux-next e5d3fd687aac 9a14138f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/19 11:20 linux-next e5d3fd687aac 9a14138f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/19 10:13 linux-next e5d3fd687aac 9a14138f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/19 09:28 linux-next e5d3fd687aac 9a14138f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/19 09:08 linux-next e5d3fd687aac 9a14138f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/19 06:20 linux-next e5d3fd687aac 9a14138f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/19 04:21 linux-next e5d3fd687aac 9a14138f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/19 02:52 linux-next e5d3fd687aac 9a14138f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/19 02:41 linux-next e5d3fd687aac 9a14138f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
2025/02/19 01:27 linux-next e5d3fd687aac 9a14138f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in loop_process_work
* Struck through repros no longer work on HEAD.