watchdog: BUG: soft lockup - CPU#0 stuck for 26s! [swapper/0:0] Modules linked in: irq event stamp: 6974233 hardirqs last enabled at (6974232): [<ffff800011947cac>] exit_el1_irq_or_nmi+0x10/0x1c arch/arm64/kernel/entry-common.c:235 hardirqs last disabled at (6974233): [<ffff800011947c90>] enter_el1_irq_or_nmi+0x10/0x1c arch/arm64/kernel/entry-common.c:227 softirqs last enabled at (6969100): [<ffff800008020ccc>] softirq_handle_end kernel/softirq.c:401 [inline] softirqs last enabled at (6969100): [<ffff800008020ccc>] __do_softirq+0xb5c/0xe20 kernel/softirq.c:587 softirqs last disabled at (6969113): [<ffff8000081b573c>] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline] softirqs last disabled at (6969113): [<ffff8000081b573c>] invoke_softirq kernel/softirq.c:439 [inline] softirqs last disabled at (6969113): [<ffff8000081b573c>] __irq_exit_rcu+0x28c/0x534 kernel/softirq.c:636 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.15.114-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023 pstate: 00400005 (nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : queued_spin_lock_slowpath+0x160/0x938 kernel/locking/qspinlock.c:382 lr : queued_spin_lock_slowpath+0x16c/0x938 kernel/locking/qspinlock.c:382 sp : ffff8000080078e0 x29: ffff800008007980 x28: 1ffff00001000f28 x27: 1fffe0001b9db91f x26: dfff800000000000 x25: ffff700001000f20 x24: ffff800008007900 x23: 1fffe0001b9db91e x22: ffff800008007940 x21: 0000000000000001 x20: 0000000000000001 x19: ffff0000dcedc8f0 x18: 0000000000010001 x17: ff808000083ec9d4 x16: ffff80000830309c x15: ffff8000083ec9d4 x14: 1ffff0000291a06a x13: ffffffffffffffff x12: 0000000000000001 x11: 1fffe0001b9db91e x10: 0000000000000000 x9 : 0000000000000000 x8 : 0000000000000101 x7 : ffff800010096ba0 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000083023a8 x2 : 0000000000000000 x1 : 0000000000000004 x0 : 0000000000000001 Call trace: __cmpwait_case_32 arch/arm64/include/asm/cmpxchg.h:252 [inline] __cmpwait arch/arm64/include/asm/cmpxchg.h:278 [inline] queued_spin_lock_slowpath+0x160/0x938 kernel/locking/qspinlock.c:382 queued_spin_lock include/asm-generic/qspinlock.h:85 [inline] do_raw_spin_lock+0x334/0x35c kernel/locking/spinlock_debug.c:115 __raw_spin_lock include/linux/spinlock_api_smp.h:143 [inline] _raw_spin_lock+0xb8/0x10c kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:363 [inline] fq_pie_timer+0x94/0x248 net/sched/sch_fq_pie.c:380 call_timer_fn+0x19c/0x8f0 kernel/time/timer.c:1421 expire_timers kernel/time/timer.c:1466 [inline] __run_timers+0x554/0x718 kernel/time/timer.c:1737 run_timer_softirq+0x7c/0x114 kernel/time/timer.c:1750 __do_softirq+0x344/0xe20 kernel/softirq.c:558 do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline] invoke_softirq kernel/softirq.c:439 [inline] __irq_exit_rcu+0x28c/0x534 kernel/softirq.c:636 irq_exit+0x14/0x88 kernel/softirq.c:660 handle_domain_irq+0xf4/0x178 kernel/irq/irqdesc.c:710 gic_handle_irq+0x78/0x1c8 drivers/irqchip/irq-gic-v3.c:757 call_on_irq_stack+0x24/0x4c arch/arm64/kernel/entry.S:899 do_interrupt_handler+0x74/0x94 arch/arm64/kernel/entry-common.c:267 el1_interrupt+0x30/0x58 arch/arm64/kernel/entry-common.c:442 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:458 el1h_64_irq+0x78/0x7c arch/arm64/kernel/entry.S:580 arch_local_irq_enable+0xc/0x18 arch/arm64/include/asm/irqflags.h:35 default_idle_call+0xcc/0x4a8 kernel/sched/idle.c:112 cpuidle_idle_call kernel/sched/idle.c:194 [inline] do_idle+0x1d4/0x4dc kernel/sched/idle.c:306 cpu_startup_entry+0x24/0x28 kernel/sched/idle.c:403 rest_init+0x364/0x38c init/main.c:736 arch_call_rest_init+0x14/0x20 init/main.c:889 start_kernel+0x444/0x604 init/main.c:1144 __primary_switched+0xa8/0xb0 arch/arm64/kernel/head.S:468