watchdog: BUG: soft lockup - CPU#0 stuck for 31s! [kworker/0:7:4172]
Modules linked in:
irq event stamp: 42672
hardirqs last  enabled at (42671): [<ffff8000081e9fe4>] __cancel_work+0x17c/0x224 kernel/workqueue.c:3276
hardirqs last disabled at (42672): [<ffff8000111a2130>] enter_el1_irq_or_nmi+0x10/0x1c arch/arm64/kernel/entry-common.c:227
softirqs last  enabled at (42668): [<ffff8000101287a0>] addrconf_dad_work+0xa80/0x1150 net/ipv6/addrconf.c:4185
softirqs last disabled at (42666): [<ffff800010128108>] addrconf_dad_work+0x3e8/0x1150 net/ipv6/addrconf.c:4159
CPU: 0 PID: 4172 Comm: kworker/0:7 Not tainted 5.15.181-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
Workqueue: ipv6_addrconf addrconf_dad_work
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : __cancel_work+0x19c/0x224 kernel/workqueue.c:3277
lr : __cancel_work+0x198/0x224 kernel/workqueue.c:3276
sp : ffff80001f7178d0
x29: ffff80001f7178e0 x28: 1fffe00019b04027 x27: 1ffff00003ee2f2c
x26: dfff800000000000 x25: ffff0000d986c000 x24: 0000000000000001
x23: 1fffe00019b04012 x22: dfff800000000000 x21: 0000000000000000
x20: 0000000000000080 x19: 0000000000000000 x18: 0000000000000201
x17: 0000000000000000 x16: ffff8000082bf2a4 x15: 0000000000000003
x14: 0000000000ff0100 x13: 1ffff0000282a06b x12: 0000000000ff0100
x11: 0000000000000000 x10: 0000000000000000 x9 : ffff8000081ea000
x8 : ffff0000ca451b40 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000080 x4 : 0000000000000000 x3 : ffff800008044e7c
x2 : 0000000000000006 x1 : 0000000000000080 x0 : 0000000000000000
Call trace:
 arch_local_irq_restore arch/arm64/include/asm/irqflags.h:122 [inline]
 __cancel_work+0x19c/0x224 kernel/workqueue.c:3276
 cancel_delayed_work+0x24/0x38 kernel/workqueue.c:3307
 addrconf_del_dad_work net/ipv6/addrconf.c:321 [inline]
 addrconf_dad_completed+0xd0/0xb3c net/ipv6/addrconf.c:4233
 addrconf_dad_work+0x954/0x1150 net/ipv6/addrconf.c:-1
 process_one_work+0x79c/0x1140 kernel/workqueue.c:2310
 worker_thread+0x8f4/0x101c kernel/workqueue.c:2457
 kthread+0x374/0x454 kernel/kthread.c:334
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870