watchdog: BUG: soft lockup - CPU#0 stuck for 21s! [syz-executor.4:15271] Modules linked in: irq event stamp: 796937 hardirqs last enabled at (796936): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline] hardirqs last enabled at (796936): [] _raw_spin_unlock_irq+0x30/0x80 kernel/locking/spinlock.c:202 hardirqs last disabled at (796937): [] __el1_irq arch/arm64/kernel/entry-common.c:468 [inline] hardirqs last disabled at (796937): [] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:486 softirqs last enabled at (2676): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (6565): [] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80 CPU: 0 PID: 15271 Comm: syz-executor.4 Not tainted 6.3.0-rc7-syzkaller-g14f8db1c0f9a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __sanitizer_cov_trace_pc+0x70/0x7c kernel/kcov.c:225 lr : pie_calculate_probability+0xe0/0x7bc sp : ffff800008007b30 x29: ffff800008007b70 x28: 1fffe0001b20495a x27: dfff800000000000 x26: 0000000000000000 x25: 0000000000000000 x24: 0000000000000000 x23: ffff0000d9024b1a x22: ffff0000d9024b00 x21: ffff00014e8b0a78 x20: 1fffe00029d1614f x19: ffff00014e8b0a70 x18: ffff0001b42a6c98 x17: 0000000000420042 x16: ffff8000084f9a5c x15: 0000000000000301 x14: 1ffff00002b900b0 x13: dfff800000000000 x12: ffff700001000f60 x11: 0000000000000101 x10: 0000000000000100 x9 : 0000000000000000 x8 : ffff000145ae3680 x7 : ffff80001088db88 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff80000831aa04 x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: __sanitizer_cov_trace_pc+0x70/0x7c kernel/kcov.c:223 fq_pie_timer+0x110/0x248 net/sched/sch_fq_pie.c:380 call_timer_fn+0x19c/0x8cc kernel/time/timer.c:1700 expire_timers kernel/time/timer.c:1751 [inline] __run_timers+0x55c/0x734 kernel/time/timer.c:2022 run_timer_softirq+0x7c/0x114 kernel/time/timer.c:2035 __do_softirq+0x2d0/0xd54 kernel/softirq.c:571 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80 call_on_irq_stack+0x24/0x4c arch/arm64/kernel/entry.S:899 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:85 invoke_softirq kernel/softirq.c:452 [inline] __irq_exit_rcu+0x28c/0x534 kernel/softirq.c:650 irq_exit_rcu+0x14/0x84 kernel/softirq.c:662 el0_interrupt+0x74/0x254 arch/arm64/kernel/entry-common.c:717 __el0_irq_handler_common+0x18/0x24 arch/arm64/kernel/entry-common.c:724 el0t_64_irq_handler+0x10/0x1c arch/arm64/kernel/entry-common.c:729 el0t_64_irq+0x190/0x194 arch/arm64/kernel/entry.S:592