[syzbot] [wireless?] INFO: task hung in reg_todo (4)
From: syzbot <hidden>
Date: 2025-12-26 20:18:21
Also in:
linux-wireless, lkml
Hello, syzbot found the following issue on: HEAD commit: 9448598b22c5 Linux 6.19-rc2 git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=111ad392580000 kernel config: https://syzkaller.appspot.com/x/.config?x=a94030c847137a18 dashboard link: https://syzkaller.appspot.com/bug?extid=8f72a490f8e8879ee7e6 compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1007c3c2580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17d4808a580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/477361b600ee/disk-9448598b.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/d6a6291ae36e/vmlinux-9448598b.xz kernel image: https://storage.googleapis.com/syzbot-assets/0c0e810e0acf/bzImage-9448598b.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+8f72a490f8e8879ee7e6@syzkaller.appspotmail.com INFO: task kworker/0:0:9 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:0 state:D stack:23672 pid:9 tgid:9 ppid:2 task_flags:0x4208060 flags:0x00080000 Workqueue: events reg_todo Call Trace: <TASK> context_switch kernel/sched/core.c:5256 [inline] __schedule+0x149b/0x4fd0 kernel/sched/core.c:6863 __schedule_loop kernel/sched/core.c:6945 [inline] schedule+0x165/0x360 kernel/sched/core.c:6960 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7017 __mutex_lock_common kernel/locking/mutex.c:692 [inline] __mutex_lock+0x7e6/0x1350 kernel/locking/mutex.c:776 reg_todo+0x1c/0xa60 net/wireless/reg.c:3189 --- 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@googlegroups.com. 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 syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. 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