------------[ cut here ]------------ workqueue: cannot queue hci_cmd_timeout on wq hci4 WARNING: CPU: 1 PID: 43 at kernel/workqueue.c:2258 __queue_work+0xe10/0x1210 kernel/workqueue.c:2256 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+0xe10/0x1210 kernel/workqueue.c:2256 lr : __queue_work+0xe10/0x1210 kernel/workqueue.c:2256 sp : ffff800097937b20 x29: ffff800097937b70 x28: dfff800000000000 x27: ffff700012f26f84 x26: 0000000000000008 x25: dfff800000000000 x24: ffff0000c8815800 x23: ffff0000c88159c0 x22: 0000000000000100 x21: 1fffe00019102b38 x20: ffff800092bf7000 x19: ffff0000c8c1c990 x18: 1fffe000337dfe90 x17: ffff80010ca32000 x16: ffff800082deb6c0 x15: 0000000000000001 x14: 1fffe000337dfefa x13: 0000000000000000 x12: 0000000000000000 x11: ffff6000337dfefb x10: 0000000000ff0100 x9 : 092b480036c64a00 x8 : 092b480036c64a00 x7 : ffff800080564a40 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000000 x3 : ffff8000807d5f04 x2 : 0000000000000001 x1 : 0000000000000101 x0 : 0000000000000000 Call trace: __queue_work+0xe10/0x1210 kernel/workqueue.c:2256 (P) delayed_work_timer_fn+0x74/0x90 kernel/workqueue.c:2487 call_timer_fn+0x1b4/0x818 kernel/time/timer.c:1747 expire_timers kernel/time/timer.c:1793 [inline] __run_timers kernel/time/timer.c:2372 [inline] __run_timer_base+0x54c/0x76c kernel/time/timer.c:2384 run_timer_base kernel/time/timer.c:2393 [inline] run_timer_softirq+0xcc/0x194 kernel/time/timer.c:2403 handle_softirqs+0x328/0xc88 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:520 [inline] el1_interrupt+0x40/0x60 arch/arm64/kernel/entry-common.c:532 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:537 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:1142 [inline] nbcon_kthread_func+0x58c/0x6d0 kernel/printk/nbcon.c:1229 kthread+0x5fc/0x75c kernel/kthread.c:463 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844 irq event stamp: 26119 hardirqs last enabled at (26118): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (26118): [] _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:194 hardirqs last disabled at (26119): [] __raw_spin_lock_irq include/linux/spinlock_api_smp.h:117 [inline] hardirqs last disabled at (26119): [] _raw_spin_lock_irq+0x28/0x70 kernel/locking/spinlock.c:170 softirqs last enabled at (26012): [] softirq_handle_end kernel/softirq.c:468 [inline] softirqs last enabled at (26012): [] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:650 softirqs last disabled at (26079): [] __do_softirq+0x14/0x20 kernel/softirq.c:656 ---[ end trace 0000000000000000 ]---