watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [ksoftirqd/0:14] Modules linked in: irq event stamp: 2803149 hardirqs last enabled at (2803148): [] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:81 [inline] hardirqs last enabled at (2803148): [] exit_to_kernel_mode+0x100/0x178 arch/arm64/kernel/entry-common.c:91 hardirqs last disabled at (2803149): [] enter_el1_irq_or_nmi+0x10/0x1c arch/arm64/kernel/entry-common.c:227 softirqs last enabled at (2798862): [] softirq_handle_end kernel/softirq.c:401 [inline] softirqs last enabled at (2798862): [] __do_softirq+0xb5c/0xe20 kernel/softirq.c:587 softirqs last disabled at (2798867): [] run_ksoftirqd+0x68/0x258 kernel/softirq.c:920 CPU: 0 PID: 14 Comm: ksoftirqd/0 Not tainted 5.15.116-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 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 : ffff800018947740 x29: ffff8000189477e0 x28: 1ffff00003128ef4 x27: 1fffe0001a0dbe1f x26: dfff800000000000 x25: ffff700003128eec x24: ffff800018947760 x23: 1fffe0001a0dbe1e x22: ffff8000189477a0 x21: 0000000000000001 x20: 0000000000000001 x19: ffff0000d06df0f0 x18: 0000000000000500 x17: ff80800010f760fc x16: ffff80000830309c x15: ffff800010f760fc x14: 1ffff0000291e06a x13: ffffffffffffffff x12: 0000000000000001 x11: 1fffe0001a0dbe1e x10: 0000000000000000 x9 : 0000000000000000 x8 : 0000000000000101 x7 : ffff80001009bd78 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 run_ksoftirqd+0x68/0x258 kernel/softirq.c:920 smpboot_thread_fn+0x4b0/0x920 kernel/smpboot.c:164 kthread+0x37c/0x45c kernel/kthread.c:319 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870