watchdog: BUG: soft lockup - CPU#0 stuck for 21s! [ksoftirqd/0:14] Modules linked in: irq event stamp: 27783981 hardirqs last enabled at (27783980): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline] hardirqs last enabled at (27783980): [] _raw_spin_unlock_irq+0x3c/0x6c kernel/locking/spinlock.c:202 hardirqs last disabled at (27783981): [] __el1_irq arch/arm64/kernel/entry-common.c:468 [inline] hardirqs last disabled at (27783981): [] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:486 softirqs last enabled at (26601270): [] _stext+0x54c/0x5e4 softirqs last disabled at (26601275): [] run_ksoftirqd+0x40/0xf8 kernel/softirq.c:934 CPU: 0 PID: 14 Comm: ksoftirqd/0 Not tainted 6.2.0-rc7-syzkaller-17907-g2d3827b3f393 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 pstate: 00400005 (nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : pie_calculate_probability+0x360/0x43c net/sched/sch_pie.c:408 lr : pie_calculate_probability+0x348/0x43c net/sched/sch_pie.c:397 sp : ffff80000f2bbb70 x29: ffff80000f2bbb80 x28: 00000015798ee228 x27: 00051eb851eb851e x26: 0000000000000000 x25: 0000000000000000 x24: 0000000000000000 x23: 0000000000000000 x22: 0000000000000000 x21: 0000000000000000 x20: ffff00015438ab00 x19: ffff000154b50370 x18: 00000000f8345f38 x17: 00000000b5acf532 x16: ffff0000c031a3f8 x15: ffff80000dbd2118 x14: ffff0000c0319a00 x13: 00000000ffffffff x12: ffff0000c0319a00 x11: ff8080000b2eb53c x10: 0000000000000000 x9 : ffff80000b2eb53c x8 : 0000000000039387 x7 : ffff80000b2ee300 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: pie_calculate_probability+0x360/0x43c net/sched/sch_pie.c:408 fq_pie_timer+0x6c/0xe8 net/sched/sch_fq_pie.c:380 call_timer_fn+0x158/0x650 kernel/time/timer.c:1700 expire_timers kernel/time/timer.c:1751 [inline] __run_timers+0x598/0x694 kernel/time/timer.c:2022 run_timer_softirq+0x34/0x5c kernel/time/timer.c:2035 _stext+0x1d8/0x5e4 run_ksoftirqd+0x40/0xf8 kernel/softirq.c:934 smpboot_thread_fn+0x248/0x3ec kernel/smpboot.c:164 kthread+0x12c/0x158 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870