Hello, syzbot found the following issue on: HEAD commit: 9d89551994a4 Linux 6.13-rc6 git tree: bpf console output: https://syzkaller.appspot.com/x/log.txt?x=122ac1df980000 kernel config: https://syzkaller.appspot.com/x/.config?x=4ef22c4fce5135b4 dashboard link: https://syzkaller.appspot.com/bug?extid=88988cfce8f3aa42cc80 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/9bc45dda6651/disk-9d895519.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/34e0e0deceda/vmlinux-9d895519.xz kernel image: https://storage.googleapis.com/syzbot-assets/503e9fd75086/bzImage-9d895519.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+88988cfce8f3aa42cc80@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+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: 7f171ad72ec7e200 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> --- 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
