watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.1:6343]
Modules linked in:
irq event stamp: 1875425
hardirqs last  enabled at (1875424): [<ffff80008a44626c>] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:84 [inline]
hardirqs last  enabled at (1875424): [<ffff80008a44626c>] exit_to_kernel_mode+0xdc/0x10c arch/arm64/kernel/entry-common.c:94
hardirqs last disabled at (1875425): [<ffff80008a443ea4>] __el1_irq arch/arm64/kernel/entry-common.c:470 [inline]
hardirqs last disabled at (1875425): [<ffff80008a443ea4>] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:488
softirqs last  enabled at (1870680): [<ffff800080034380>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32
softirqs last disabled at (1870731): [<ffff80008002b660>] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80
CPU: 0 PID: 6343 Comm: syz-executor.1 Not tainted 6.4.0-rc7-syzkaller-00127-ge40939bbfc68-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023
pstate: 20400005 (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_cmp8+0x14/0x90 kernel/kcov.c:284
lr : ktime_compare include/linux/ktime.h:97 [inline]
lr : ktime_after include/linux/ktime.h:113 [inline]
lr : get_packet_txtime net/sched/sch_taprio.c:531 [inline]
lr : taprio_enqueue_one+0xd50/0x146c net/sched/sch_taprio.c:574
sp : ffff8000800071f0
x29: ffff8000800073a0 x28: ffff0000e55c3530 x27: 0000000000000000
x26: 1fffe0001c7a312b x25: 051ad573729545c1 x24: 051ad57372954580
x23: ffff0000e3d18958 x22: ffff0000e55c3400 x21: 051ad573729545dd
x20: 0000000000000001 x19: 051ad57372954541 x18: 00000000b6933af6
x17: 0000000000000000 x16: ffff80008050b4cc x15: 0000000000000101
x14: 1ffff00011bde0ac x13: ffffffff80000040 x12: 0000000080000040
x11: 0000000000000302 x10: 0000000000000100 x9 : 0000000000000302
x8 : ffff0000c4b88000 x7 : 0000000000000000 x6 : ffff8000800072f0
x5 : ffff800080007310 x4 : 051ad572f295461d x3 : ffff80008898bde8
x2 : 0000000000000000 x1 : 051ad57372954580 x0 : 051ad573729545dd
Call trace:
 preempt_count arch/arm64/include/asm/preempt.h:13 [inline]
 check_kcov_mode kernel/kcov.c:173 [inline]
 write_comp_data kernel/kcov.c:236 [inline]
 __sanitizer_cov_trace_cmp8+0x14/0x90 kernel/kcov.c:284
 taprio_enqueue+0x328/0x544 net/sched/sch_taprio.c:655
 dev_qdisc_enqueue+0x60/0x35c net/core/dev.c:3773
 __dev_xmit_skb net/core/dev.c:3862 [inline]
 __dev_queue_xmit+0xb24/0x3318 net/core/dev.c:4210
 dev_queue_xmit include/linux/netdevice.h:3088 [inline]
 neigh_hh_output include/net/neighbour.h:528 [inline]
 neigh_output include/net/neighbour.h:542 [inline]
 ip6_finish_output2+0xd2c/0x1a1c net/ipv6/ip6_output.c:134
 __ip6_finish_output net/ipv6/ip6_output.c:195 [inline]
 ip6_finish_output+0x538/0x8c8 net/ipv6/ip6_output.c:206
 NF_HOOK_COND include/linux/netfilter.h:292 [inline]
 ip6_output+0x270/0x594 net/ipv6/ip6_output.c:227
 dst_output include/net/dst.h:458 [inline]
 NF_HOOK include/linux/netfilter.h:303 [inline]
 ndisc_send_skb+0xc30/0x1790 net/ipv6/ndisc.c:508
 ndisc_send_rs+0x47c/0x5d4 net/ipv6/ndisc.c:718
 addrconf_rs_timer+0x300/0x58c net/ipv6/addrconf.c:3936
 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:882
 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
 __el1_irq arch/arm64/kernel/entry-common.c:474 [inline]
 el1_interrupt+0x38/0x68 arch/arm64/kernel/entry-common.c:488
 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:493
 el1h_64_irq+0x64/0x68 arch/arm64/kernel/entry.S:587
 check_kcov_mode kernel/kcov.c:173 [inline]
 write_comp_data kernel/kcov.c:236 [inline]
 __sanitizer_cov_trace_const_cmp4+0x44/0x98 kernel/kcov.c:304
 proc_invalidate_siblings_dcache+0x3c8/0x618 fs/proc/inode.c:158
 proc_flush_pid+0x24/0x34 fs/proc/base.c:3411
 release_task+0x136c/0x1544 kernel/exit.c:279
 wait_task_zombie kernel/exit.c:1210 [inline]
 wait_consider_task+0x15cc/0x26f0 kernel/exit.c:1437
 do_wait_thread kernel/exit.c:1500 [inline]
 do_wait+0x2f4/0xac8 kernel/exit.c:1617
 kernel_wait4+0x24c/0x3d8 kernel/exit.c:1780
 __do_sys_wait4 kernel/exit.c:1808 [inline]
 __se_sys_wait4 kernel/exit.c:1804 [inline]
 __arm64_sys_wait4+0x11c/0x2a0 kernel/exit.c:1804
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x244 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x64/0x198 arch/arm64/kernel/syscall.c:191
 el0_svc+0x4c/0x160 arch/arm64/kernel/entry-common.c:647
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:665
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591