syzbot


bpf test error: WARNING in enable_work

Status: closed as dup on 2025/01/11 01:12
Subsystems: mm
[Documentation on labels]
Reported-by: syzbot+88988cfce8f3aa42cc80@syzkaller.appspotmail.com
First crash: 14d, last: 10d
Duplicate of
Title Repro Cause bisect Fix bisect Count Last Reported
upstream test error: WARNING in enable_work mm 20 14d 11d
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [mm?] bpf test error: WARNING in enable_work 1 (2) 2025/01/11 01:12

Sample crash report:
------------[ cut here ]------------
workqueue: work disable count underflowed
WARNING: CPU: 1 PID: 22 at kernel/workqueue.c:4317 work_offqd_enable kernel/workqueue.c:4317 [inline]
WARNING: CPU: 1 PID: 22 at kernel/workqueue.c:4317 enable_work+0x34d/0x360 kernel/workqueue.c:4488
Modules linked in:
CPU: 1 UID: 0 PID: 22 Comm: cpuhp/1 Not tainted 6.13.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:work_offqd_enable kernel/workqueue.c:4317 [inline]
RIP: 0010:enable_work+0x34d/0x360 kernel/workqueue.c:4488
Code: d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc e8 18 82 37 00 c6 05 f9 ac 9b 0e 01 90 48 c7 c7 00 d7 09 8c e8 d4 25 f8 ff 90 <0f> 0b 90 90 e9 56 ff ff ff e8 b5 c7 60 0a 0f 1f 44 00 00 90 90 90
RSP: 0000:ffffc900001c7bc0 EFLAGS: 00010046
RAX: 4efa997383c6e900 RBX: 0000000000000000 RCX: ffff88801d2f3c00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900001c7c88 R08: ffffffff81602a82 R09: 1ffffffff1cfa210
R10: dffffc0000000000 R11: fffffbfff1cfa211 R12: 1ffff92000038f7c
R13: 1ffff92000038f84 R14: 001fffffffc00001 R15: ffff8880b8738770
FS:  0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000000e736000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 vmstat_cpu_online+0xbb/0xe0 mm/vmstat.c:2151
 cpuhp_invoke_callback+0x48d/0x830 kernel/cpu.c:194
 cpuhp_thread_fun+0x41c/0x810 kernel/cpu.c:1102
 smpboot_thread_fn+0x544/0xa30 kernel/smpboot.c:164
 kthread+0x2f0/0x390 kernel/kthread.c:389
 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 (4):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/01/11 04:09 bpf 9d89551994a4 6dbc6a9b .config console log report [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce bpf test error: WARNING in enable_work
2025/01/10 07:13 bpf 9d89551994a4 67d7ec0a .config console log report [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce bpf test error: WARNING in enable_work
2025/01/09 16:23 bpf 9d89551994a4 40f46913 .config console log report [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce bpf test error: WARNING in enable_work
2025/01/06 09:29 bpf 9d89551994a4 f3558dbf .config console log report [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce bpf test error: WARNING in enable_work
* Struck through repros no longer work on HEAD.