watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [ksoftirqd/0:15]
Modules linked in:
irq event stamp: 1803981
hardirqs last  enabled at (1803980): [<ffff8000083b9468>] seqcount_lockdep_reader_access include/linux/seqlock.h:104 [inline]
hardirqs last  enabled at (1803980): [<ffff8000083b9468>] timekeeping_get_delta kernel/time/timekeeping.c:254 [inline]
hardirqs last  enabled at (1803980): [<ffff8000083b9468>] timekeeping_get_ns+0x124/0x3b8 kernel/time/timekeeping.c:388
hardirqs last disabled at (1803981): [<ffff8000119456c8>] __el1_irq arch/arm64/kernel/entry-common.c:468 [inline]
hardirqs last disabled at (1803981): [<ffff8000119456c8>] el1_interrupt+0x24/0x54 arch/arm64/kernel/entry-common.c:486
softirqs last  enabled at (1382860): [<ffff8000081a9670>] softirq_handle_end kernel/softirq.c:439 [inline]
softirqs last  enabled at (1382860): [<ffff8000081a9670>] handle_softirqs+0xaf8/0xc6c kernel/softirq.c:624
softirqs last disabled at (1382865): [<ffff8000081abf10>] run_ksoftirqd+0x7c/0x2a0 kernel/softirq.c:963
CPU: 0 PID: 15 Comm: ksoftirqd/0 Not tainted 6.1.147-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : cake_heap_get_backlog net/sched/sch_cake.c:1472 [inline]
pc : cake_heapify+0x16c/0x530 net/sched/sch_cake.c:1486
lr : cake_heapify+0x108/0x530 net/sched/sch_cake.c:1485
sp : ffff80001c8b6e90
x29: ffff80001c8b6ea0 x28: 1fffe0001ba8085b x27: 00000000000198d0
x26: 00000000000005fc x25: ffff0000fcd93f0c x24: 00000000000002fe
x23: dfff800000000000 x22: 00000000000005fd x21: 0000000000000000
x20: ffff0000dd4002d0 x19: 00000000000002fe x18: 000000005be5cb2b
x17: 0000000000000000 x16: ffff8000082d2374 x15: 0000000000000000
x14: 0000000000000004 x13: 1ffff00002a160b1 x12: 0000000000ff0100
x11: ff0080000ffb9940 x10: 0000000000000000 x9 : 00000000000000bf
x8 : ffff0000fcd7ff0c x7 : ffff8000083b9874 x6 : 0000000000000000
x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000
x2 : 0000000000000002 x1 : 00000000000002fe x0 : 0000000000001000
Call trace:
 cake_heap_get_backlog net/sched/sch_cake.c:1472 [inline]
 cake_heapify+0x16c/0x530 net/sched/sch_cake.c:1486
 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]
 sfb_enqueue+0x794/0x1294 net/sched/sch_sfb.c:405
 dev_qdisc_enqueue+0x5c/0x38c net/core/dev.c:3863
 __dev_xmit_skb net/core/dev.c:3952 [inline]
 __dev_queue_xmit+0xad0/0x309c 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
 run_ksoftirqd+0x7c/0x2a0 kernel/softirq.c:963
 smpboot_thread_fn+0x4b0/0x964 kernel/smpboot.c:164
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:849