watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [kworker/1:5:4382]
Modules linked in:
irq event stamp: 1101015
hardirqs last  enabled at (1101014): [<ffff8000083b9464>] seqcount_lockdep_reader_access include/linux/seqlock.h:104 [inline]
hardirqs last  enabled at (1101014): [<ffff8000083b9464>] timekeeping_get_delta kernel/time/timekeeping.c:254 [inline]
hardirqs last  enabled at (1101014): [<ffff8000083b9464>] timekeeping_get_ns+0x124/0x3b8 kernel/time/timekeeping.c:388
hardirqs last disabled at (1101015): [<ffff800011948df0>] __el1_irq arch/arm64/kernel/entry-common.c:468 [inline]
hardirqs last disabled at (1101015): [<ffff800011948df0>] el1_interrupt+0x24/0x54 arch/arm64/kernel/entry-common.c:486
softirqs last  enabled at (44276): [<ffff80000c6984c4>] spin_unlock_bh include/linux/spinlock.h:396 [inline]
softirqs last  enabled at (44276): [<ffff80000c6984c4>] ptr_ring_consume_bh include/linux/ptr_ring.h:367 [inline]
softirqs last  enabled at (44276): [<ffff80000c6984c4>] wg_packet_decrypt_worker+0x8f8/0x980 drivers/net/wireguard/receive.c:499
softirqs last disabled at (47417): [<ffff800008020164>] __do_softirq+0x14/0x20 kernel/softirq.c:630
CPU: 1 PID: 4382 Comm: kworker/1:5 Not tainted 6.1.148-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
Workqueue: rcu_gp process_srcu
pstate: 42400005 (nZcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : __sanitizer_cov_trace_const_cmp2+0xac/0xb0 kernel/kcov.c:308
lr : cake_heap_get_backlog net/sched/sch_cake.c:1470 [inline]
lr : cake_heapify+0x48/0x530 net/sched/sch_cake.c:1478
sp : ffff800008016fd0
x29: ffff800008016fe0 x28: 1fffe0001b28085b x27: ffff0000ff400000
x26: 000000000003ff8b x25: ffff0000d94042d8 x24: ffff0000d94002d0
x23: ffff800008017600 x22: ffff0000d94002c0 x21: 00000000000008e9
x20: 00000000000008e9 x19: 00000000000008e9 x18: ffff800011aabce0
x17: 0000000000000000 x16: ffff8000082d2370 x15: 0000000000000000
x14: 0000000000000004 x13: 1ffff00002a160b1 x12: 0000000000ff0100
x11: ff0080000ffbca98 x10: 0000000000000000 x9 : ffff0000cfbd1bc0
x8 : ffff80000ffbca98 x7 : ffff8000083b9870 x6 : 0000000000000000
x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000
x2 : 0000000000000002 x1 : 00000000000008e9 x0 : 0000000000002001
Call trace:
 __sanitizer_cov_trace_const_cmp2+0xac/0xb0 kernel/kcov.c:308
 cake_drop net/sched/sch_cake.c:1575 [inline]
 cake_enqueue+0x333c/0x6880 net/sched/sch_cake.c:1945
 qdisc_enqueue include/net/sch_generic.h:816 [inline]
 netem_dequeue+0xa74/0x107c net/sched/sch_netem.c:737
 dequeue_skb net/sched/sch_generic.c:292 [inline]
 qdisc_restart net/sched/sch_generic.c:397 [inline]
 __qdisc_run+0x1c4/0x1368 net/sched/sch_generic.c:415
 __dev_xmit_skb net/core/dev.c:3958 [inline]
 __dev_queue_xmit+0xc18/0x309c net/core/dev.c:4300
 dev_queue_xmit include/linux/netdevice.h:3051 [inline]
 tipc_l2_send_msg+0x29c/0x35c net/tipc/bearer.c:518
 tipc_bearer_xmit_skb+0x244/0x384 net/tipc/bearer.c:577
 tipc_disc_timeout+0x4c8/0x608 net/tipc/discover.c:338
 call_timer_fn+0x1b8/0x964 kernel/time/timer.c:1504
 expire_timers kernel/time/timer.c:1549 [inline]
 __run_timers+0x460/0x6bc kernel/time/timer.c:1820
 run_timer_softirq+0x7c/0x114 kernel/time/timer.c:1833
 handle_softirqs+0x318/0xc6c kernel/softirq.c:596
 __do_softirq+0x14/0x20 kernel/softirq.c:630
 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80
 call_on_irq_stack+0x24/0x30 arch/arm64/kernel/entry.S:849
 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:85
 invoke_softirq kernel/softirq.c:477 [inline]
 __irq_exit_rcu+0x23c/0x43c kernel/softirq.c:679
 irq_exit_rcu+0x14/0x84 kernel/softirq.c:691
 __el1_irq arch/arm64/kernel/entry-common.c:472 [inline]
 el1_interrupt+0x38/0x54 arch/arm64/kernel/entry-common.c:486
 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:491
 el1h_64_irq+0x64/0x68 arch/arm64/kernel/entry.S:581
 __arch_counter_get_cntvct arch/arm64/include/asm/arch_timer.h:214 [inline]
 arch_counter_get_cntvct+0x24/0x30 drivers/clocksource/arm_arch_timer.c:210
 __delay+0x1c8/0x280 arch/arm64/lib/delay.c:48
 __const_udelay arch/arm64/lib/delay.c:55 [inline]
 __udelay+0x60/0x70 arch/arm64/lib/delay.c:61
 try_check_zero+0x388/0x3b8 kernel/rcu/srcutree.c:975
 srcu_advance_state kernel/rcu/srcutree.c:1549 [inline]
 process_srcu+0x16c/0xffc kernel/rcu/srcutree.c:1651
 process_one_work+0x7f4/0x13a8 kernel/workqueue.c:2292
 worker_thread+0x8c8/0xfbc kernel/workqueue.c:2439
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:849