watchdog: BUG: soft lockup - CPU#0 stuck for 26s! [ksoftirqd/0:15] Modules linked in: irq event stamp: 548937 hardirqs last enabled at (548936): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline] hardirqs last enabled at (548936): [] _raw_spin_unlock_irq+0x30/0x80 kernel/locking/spinlock.c:202 hardirqs last disabled at (548937): [] __el1_irq arch/arm64/kernel/entry-common.c:470 [inline] hardirqs last disabled at (548937): [] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:488 softirqs last enabled at (487798): [] softirq_handle_end kernel/softirq.c:414 [inline] softirqs last enabled at (487798): [] __do_softirq+0xac0/0xd54 kernel/softirq.c:600 softirqs last disabled at (487801): [] run_ksoftirqd+0x6c/0x158 kernel/softirq.c:939 CPU: 0 PID: 15 Comm: ksoftirqd/0 Not tainted 6.4.0-rc7-syzkaller-ge40939bbfc68 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : preempt_count arch/arm64/include/asm/preempt.h:13 [inline] pc : check_kcov_mode kernel/kcov.c:173 [inline] pc : write_comp_data kernel/kcov.c:236 [inline] pc : __sanitizer_cov_trace_const_cmp8+0x34/0x90 kernel/kcov.c:311 lr : pie_calculate_probability+0x284/0x7bc net/sched/sch_pie.c:345 sp : ffff8000928a78d0 x29: ffff8000928a7910 x28: 0000000225c17d04 x27: 00000010c6f7a0b5 x26: 0000000000000000 x25: ffff80009e7fb930 x24: 0000000000000000 x23: 00000015798ee228 x22: ffff0000e6fd3300 x21: 0000000000000000 x20: 1ffff00013cff726 x19: 0000000000000000 x18: dfff800000000000 x17: 000000001c6403d6 x16: ffff80008050b724 x15: 00000000ee4900e0 x14: 1ffff00011bde0ac x13: dfff800000000000 x12: ffff700012514f14 x11: 0000000000000101 x10: 0000000000000100 x9 : 0000000000000100 x8 : ffff0000c19a3780 x7 : ffff80008897cee0 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff80008032a638 x2 : 0000000000000000 x1 : 0000000000000000 x0 : 00000010c6f7a0b5 Call trace: check_kcov_mode kernel/kcov.c:173 [inline] write_comp_data kernel/kcov.c:236 [inline] __sanitizer_cov_trace_const_cmp8+0x34/0x90 kernel/kcov.c:311 fq_pie_timer+0x1f0/0x41c net/sched/sch_fq_pie.c:387 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 run_ksoftirqd+0x6c/0x158 kernel/softirq.c:939 smpboot_thread_fn+0x4b0/0x920 kernel/smpboot.c:164 kthread+0x288/0x310 kernel/kthread.c:379 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:853