INFO: task syz.5.4049:20198 blocked for more than 143 seconds. Tainted: G L syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.5.4049 state:D stack:27440 pid:20198 tgid:20197 ppid:18324 task_flags:0x400040 flags:0x00080002 Call Trace: context_switch kernel/sched/core.c:5504 [inline] __schedule+0x17d9/0x56c0 kernel/sched/core.c:7228 __schedule_loop kernel/sched/core.c:7307 [inline] schedule+0x164/0x360 kernel/sched/core.c:7322 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7379 __mutex_lock_common kernel/locking/mutex.c:726 [inline] __mutex_lock+0x7bf/0x1550 kernel/locking/mutex.c:821 device_lock include/linux/device.h:1102 [inline] usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 chrdev_open+0x4d9/0x600 fs/char_dev.c:411 do_dentry_open+0x816/0x1380 fs/open.c:947 vfs_open+0x3b/0x340 fs/open.c:1079 do_open fs/namei.c:4700 [inline] path_openat+0x2e44/0x3830 fs/namei.c:4859 do_file_open+0x23e/0x4a0 fs/namei.c:4888 do_sys_openat2+0x115/0x200 fs/open.c:1395 do_sys_open fs/open.c:1401 [inline] __do_sys_openat fs/open.c:1417 [inline] __se_sys_openat fs/open.c:1412 [inline] __x64_sys_openat+0x138/0x170 fs/open.c:1412 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f52fdf5d68e RSP: 002b:00007f52fef01b28 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f52fef026c0 RCX: 00007f52fdf5d68e RDX: 000000000000a401 RSI: 00007f52fef01c00 RDI: ffffffffffffff9c RBP: 00007f52fef01c00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: cccccccccccccccd R13: 00007f52fe216038 R14: 00007f52fe215fa0 R15: 00007f52fe33fa48 INFO: lockdep is turned off. NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 nmi_cpu_backtrace+0x274/0x2d0 lib/nmi_backtrace.c:122 nmi_trigger_cpumask_backtrace+0x17a/0x380 lib/nmi_backtrace.c:65 trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline] __sys_info lib/sys_info.c:157 [inline] sys_info+0x135/0x170 lib/sys_info.c:165 check_hung_uninterruptible_tasks kernel/hung_task.c:353 [inline] watchdog+0xfd7/0x1030 kernel/hung_task.c:561 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 23376 Comm: kworker/u8:19 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 Workqueue: events_unbound cfg80211_wiphy_work RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:-1 [inline] RIP: 0010:__mutex_lock+0x15f/0x1550 kernel/locking/mutex.c:821 Code: 3d f5 36 98 0e 00 75 22 49 8d 7c 24 58 48 89 f8 48 c1 e8 03 80 3c 18 00 74 05 e8 6c ae 83 f6 4d 39 64 24 58 0f 85 48 11 00 00 <4c> 89 b4 24 98 00 00 00 bf 01 00 00 00 e8 2f 8e e3 f5 49 8d 7c 24 RSP: 0018:ffffc9000359f900 EFLAGS: 00000246 RAX: 1ffff110096700f3 RBX: dffffc0000000000 RCX: ffffffff9a484503 RDX: 0000000000000000 RSI: 000000000000026f RDI: ffff88804b380798 RBP: ffffc9000359faa0 R08: ffffc9000359fa07 R09: 0000000000000000 R10: ffffc9000359f9e0 R11: fffff520006b3f41 R12: ffff88804b380740 R13: 0000000000000000 R14: 1ffff920006b3f34 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff888125251000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0d6cbea2f8 CR3: 000000007978c000 CR4: 00000000003526f0 Call Trace: class_wiphy_constructor include/net/cfg80211.h:6884 [inline] cfg80211_wiphy_work+0xb4/0x420 net/wireless/core.c:524 process_one_work kernel/workqueue.c:3322 [inline] process_scheduled_works+0xa8e/0x14e0 kernel/workqueue.c:3405 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3486 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245