Hello, syzbot found the following issue on: HEAD commit: 9d89551994a4 Linux 6.13-rc6 git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1180b9c4580000 kernel config: https://syzkaller.appspot.com/x/.config?x=10cb4f23d3e0f104 dashboard link: https://syzkaller.appspot.com/bug?extid=0bef82da8b7dca7e5869 compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/ac26b8628463/disk-9d895519.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/05387975b936/vmlinux-9d895519.xz kernel image: https://storage.googleapis.com/syzbot-assets/c28b69047c4b/bzImage-9d895519.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+0bef82da8b7dca7e5869@xxxxxxxxxxxxxxxxxxxxxxxxx ------------[ 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+0x2fa/0x340 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+0x2fa/0x340 kernel/workqueue.c:4488 Code: 89 ee e8 b9 d5 36 00 45 84 ed 0f 85 28 fe ff ff e8 0b db 36 00 c6 05 90 c1 e4 0e 01 90 48 c7 c7 e0 d9 6b 8b e8 57 12 f7 ff 90 <0f> 0b 90 90 e9 05 fe ff ff 48 89 ef e8 e5 a5 98 00 e9 a9 fe ff ff RSP: 0018:ffffc900001c7ca0 EFLAGS: 00010082 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff815a5139 RDX: ffff88801d69bc00 RSI: ffffffff815a5146 RDI: 0000000000000001 RBP: ffff8880b8738660 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000002 R12: 1ffff92000038f95 R13: 0000000000000000 R14: 00000000000000c4 R15: ffffffff81db2390 FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000000df7e000 CR4: 0000000000350ef0 Call Trace: <TASK> vmstat_cpu_online+0x83/0xf0 mm/vmstat.c:2151 cpuhp_invoke_callback+0x3d3/0xa10 kernel/cpu.c:194 cpuhp_thread_fun+0x480/0x6f0 kernel/cpu.c:1102 smpboot_thread_fn+0x664/0xa30 kernel/smpboot.c:164 kthread+0x2c4/0x3a0 kernel/kthread.c:389 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 </TASK> --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
