------------[ cut here ]------------ workqueue: cannot queue hci_cmd_timeout on wq hci1 WARNING: kernel/workqueue.c:2252 at __queue_work+0xfa0/0x121c kernel/workqueue.c:2250, CPU#1: pr/ttyAMA-1/43 Modules linked in: CPU: 1 UID: 0 PID: 43 Comm: pr/ttyAMA-1 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 pstate: 634000c5 (nZCv daIF +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : __queue_work+0xfa0/0x121c kernel/workqueue.c:2250 lr : __queue_work+0xfa0/0x121c kernel/workqueue.c:2250 sp : ffff800097bd7b20 x29: ffff800097bd7b70 x28: dfff800000000000 x27: ffff700012f7af84 x26: ffff0000de05f800 x25: 0000000000000008 x24: 1fffe000184e7001 x23: dfff800000000000 x22: ffff0000de05f9c0 x21: 0000000000000100 x20: ffff800092e86000 x19: ffff0000e07cca88 x18: 00000000ffffffff x17: ffff80010c451000 x16: ffff800082e5c71c x15: 0000000000000001 x14: 1ffff00012f7ae9c x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000000b21 x10: 0000000000ff0100 x9 : e28aca033271e200 x8 : e28aca033271e200 x7 : ffff800080575c38 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000000 x3 : 0000000000000002 x2 : 0000000000000008 x1 : 0000000000000101 x0 : 0000000000000000 Call trace: __queue_work+0xfa0/0x121c kernel/workqueue.c:2250 (P) delayed_work_timer_fn+0x74/0x90 kernel/workqueue.c:2481 call_timer_fn+0x19c/0x814 kernel/time/timer.c:1748 expire_timers kernel/time/timer.c:1794 [inline] __run_timers kernel/time/timer.c:2373 [inline] __run_timer_base+0x54c/0x76c kernel/time/timer.c:2385 run_timer_base kernel/time/timer.c:2394 [inline] run_timer_softirq+0xcc/0x194 kernel/time/timer.c:2404 handle_softirqs+0x31c/0xc88 kernel/softirq.c:622 __do_softirq+0x14/0x20 kernel/softirq.c:656 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:68 call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:891 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:73 invoke_softirq kernel/softirq.c:503 [inline] __irq_exit_rcu+0x1b0/0x478 kernel/softirq.c:723 irq_exit_rcu+0x14/0x84 kernel/softirq.c:739 __el1_irq arch/arm64/kernel/entry-common.c:498 [inline] el1_interrupt+0x40/0x60 arch/arm64/kernel/entry-common.c:510 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:515 el1h_64_irq+0x6c/0x70 arch/arm64/kernel/entry.S:592 __daif_local_irq_restore arch/arm64/include/asm/irqflags.h:175 [inline] (P) arch_local_irq_restore arch/arm64/include/asm/irqflags.h:195 [inline] (P) __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] (P) _raw_spin_unlock_irqrestore+0x44/0x98 kernel/locking/spinlock.c:194 (P) spin_unlock_irqrestore include/linux/spinlock.h:406 [inline] __uart_port_unlock_irqrestore include/linux/serial_core.h:616 [inline] pl011_console_device_unlock+0x90/0xc8 drivers/tty/serial/amba-pl011.c:2603 nbcon_emit_one kernel/printk/nbcon.c:1149 [inline] nbcon_kthread_func+0x600/0x768 kernel/printk/nbcon.c:1255 kthread+0x5fc/0x75c kernel/kthread.c:463 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844 irq event stamp: 26515 hardirqs last enabled at (26514): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (26514): [] _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:194 hardirqs last disabled at (26515): [] __raw_spin_lock_irq include/linux/spinlock_api_smp.h:117 [inline] hardirqs last disabled at (26515): [] _raw_spin_lock_irq+0x28/0x70 kernel/locking/spinlock.c:170 softirqs last enabled at (26436): [] softirq_handle_end kernel/softirq.c:468 [inline] softirqs last enabled at (26436): [] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:650 softirqs last disabled at (26469): [] __do_softirq+0x14/0x20 kernel/softirq.c:656 ---[ end trace 0000000000000000 ]--- Dead loop on virtual device ipvlan1, fix it urgently! Dead loop on virtual device ipvlan1, fix it urgently!