watchdog: BUG: soft lockup - CPU#0 stuck for 27s! [kworker/u4:3:302]
Modules linked in:
irq event stamp: 293208
hardirqs last  enabled at (293207): [<ffff80000819dc64>] __local_bh_enable_ip+0x1f8/0x380 kernel/softirq.c:406
hardirqs last disabled at (293208): [<ffff8000111cfde8>] enter_el1_irq_or_nmi+0x10/0x1c arch/arm64/kernel/entry-common.c:227
softirqs last  enabled at (293206): [<ffff800010f79ff8>] spin_unlock_bh include/linux/spinlock.h:408 [inline]
softirqs last  enabled at (293206): [<ffff800010f79ff8>] batadv_tt_local_purge+0x25c/0x2e0 net/batman-adv/translation-table.c:1371
softirqs last disabled at (293204): [<ffff800010f79e98>] spin_lock_bh include/linux/spinlock.h:368 [inline]
softirqs last disabled at (293204): [<ffff800010f79e98>] batadv_tt_local_purge+0xfc/0x2e0 net/batman-adv/translation-table.c:1369
CPU: 0 PID: 302 Comm: kworker/u4:3 Not tainted 5.15.187-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: bat_events batadv_tt_purge
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : should_resched arch/arm64/include/asm/preempt.h:78 [inline]
pc : __local_bh_enable_ip+0x200/0x380 kernel/softirq.c:408
lr : __local_bh_enable_ip+0x1f8/0x380 kernel/softirq.c:406
sp : ffff80001f287960
x29: ffff80001f287970 x28: ffff0000c0029800 x27: ffff0000c543c018
x26: ffff0000cd9282b0 x25: ffff0000cfaeb308 x24: 0000000000000001
x23: dfff800000000000 x22: 1fffe00018f26369 x21: ffff800010f79ff8
x20: ffff0001a10c6100 x19: ffff0000c7931b48 x18: 0000000000000101
x17: 0000000000000000 x16: ffff8000082c0bc8 x15: 0000000000000001
x14: 000000000820da08 x13: 1ffff0000283006b x12: 0000000000ff0100
x11: 0000000000000000 x10: 0000000000000000 x9 : ffff80000a781b58
x8 : 00000000000000e0 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000010
x2 : 0000000000000006 x1 : ffff80001132b080 x0 : ffff80018cfe0000
Call trace:
 arch_local_irq_enable arch/arm64/include/asm/irqflags.h:35 [inline]
 __local_bh_enable_ip+0x200/0x380 kernel/softirq.c:406
 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:176 [inline]
 _raw_spin_unlock_bh+0xec/0x174 kernel/locking/spinlock.c:210
 spin_unlock_bh include/linux/spinlock.h:408 [inline]
 batadv_tt_local_purge+0x25c/0x2e0 net/batman-adv/translation-table.c:1371
 batadv_tt_purge+0x44/0x7e4 net/batman-adv/translation-table.c:3582
 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:855