syzbot


WARNING in pwq_release_workfn

Status: upstream: reported on 2024/05/04 11:14
Subsystems: kernel
[Documentation on labels]
Reported-by: syzbot+735c2553ea82b2b34e82@syzkaller.appspotmail.com
First crash: 46d, last: 37d
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [kernel?] WARNING in pwq_release_workfn 0 (1) 2024/05/04 11:14

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 3 at kernel/locking/lockdep.c:6465 lockdep_unregister_key+0x4cd/0x540 kernel/locking/lockdep.c:6465
Modules linked in:
CPU: 0 PID: 3 Comm: pool_workqueue_ Not tainted 6.9.0-rc5-syzkaller-01479-ge612b5c1d3ee #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:lockdep_unregister_key+0x4cd/0x540 kernel/locking/lockdep.c:6465
Code: 24 41 02 75 14 41 f7 c6 00 02 00 00 74 01 fb e8 29 b4 09 00 e9 83 fc ff ff e8 6f b5 0e 0a 41 f7 c6 00 02 00 00 75 e7 eb e6 90 <0f> 0b 90 eb 85 48 c7 c1 80 f5 a8 8f 80 e1 07 80 c1 03 38 c1 0f 8c
RSP: 0018:ffffc90000087cc0 EFLAGS: 00010002
RAX: 0000000000000000 RBX: 0000000000000000 RCX: dffffc0000000000
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffc90000087c20
RBP: ffffc90000087da0 R08: 0000000000000003 R09: fffff52000010f84
R10: dffffc0000000000 R11: fffff52000010f84 R12: 00000000000000c7
R13: 1ffff92000010f9c R14: 0000000000000202 R15: ffffc90000087d00
FS:  0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32a25000 CR3: 000000007b22c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 wq_unregister_lockdep kernel/workqueue.c:4655 [inline]
 pwq_release_workfn+0x6e0/0x840 kernel/workqueue.c:4958
 kthread_worker_fn+0x500/0xaf0 kernel/kthread.c:841
 kthread+0x2f0/0x390 kernel/kthread.c:388
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>

Crashes (10):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/05/09 09:20 bpf-next e612b5c1d3ee 20bf80e1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce WARNING in pwq_release_workfn
2024/05/02 08:01 net-next 496bc5861c73 3ba885bc .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in pwq_release_workfn
2024/05/01 21:18 net-next c2e6a872bde9 3ba885bc .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in pwq_release_workfn
2024/05/01 06:22 net-next c2e6a872bde9 9e0e6af1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in pwq_release_workfn
2024/04/30 11:39 net-next dd1941f801bc 27e33c58 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in pwq_release_workfn
2024/04/30 11:11 net-next dd1941f801bc 27e33c58 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in pwq_release_workfn
2024/05/02 20:41 linux-next 9c6ecb3cb6e2 ddfc15a1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in pwq_release_workfn
2024/05/02 08:27 linux-next 9c6ecb3cb6e2 3ba885bc .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in pwq_release_workfn
2024/05/01 14:02 linux-next f68868ba718e 3ba885bc .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in pwq_release_workfn
2024/05/01 12:09 linux-next f68868ba718e 3ba885bc .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in pwq_release_workfn
* Struck through repros no longer work on HEAD.