watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [aoe_tx0:2063]
Modules linked in:
irq event stamp: 41517323
hardirqs last  enabled at (41517322): [<ffff80001144af18>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
hardirqs last  enabled at (41517322): [<ffff80001144af18>] _raw_spin_unlock_irqrestore+0xa8/0x14c kernel/locking/spinlock.c:194
hardirqs last disabled at (41517323): [<ffff80001136f8a0>] enter_el1_irq_or_nmi+0x10/0x1c arch/arm64/kernel/entry-common.c:227
softirqs last  enabled at (828): [<ffff80000f841f78>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31
softirqs last disabled at (832): [<ffff80000f841f44>] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18
CPU: 0 PID: 2063 Comm: aoe_tx0 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2026
pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:161 [inline]
pc : _raw_spin_unlock_irqrestore+0xb8/0x14c kernel/locking/spinlock.c:194
lr : __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
lr : _raw_spin_unlock_irqrestore+0xa8/0x14c kernel/locking/spinlock.c:194
sp : ffff800025507860
x29: ffff800025507870 x28: 1fffe000196e08c0 x27: dfff800000000000
x26: ffff0000cb704600 x25: ffff0000cadd0f70 x24: ffff0000c16820b0
x23: 0000000000000020 x22: dfff800000000000 x21: ffff80000b22cb08
x20: ffff80001b3436e8 x19: 0000000000000000 x18: 0000000000000200
x17: 0000000000000000 x16: ffff8000082c6844 x15: 000000000004ffff
x14: 0000000000000003 x13: 1ffff00004aa0ec0 x12: 0000000000000000
x11: ff8080000a7f9068 x10: 0000000000000003 x9 : 0000000000000080
x8 : 00000000000000c0 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000080 x4 : 0000000000000000 x3 : 0000000000000010
x2 : 0000000000000002 x1 : ffff8000114cb4c0 x0 : ffff80018cb50000
Call trace:
 arch_local_irq_restore arch/arm64/include/asm/irqflags.h:122 [inline]
 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
 _raw_spin_unlock_irqrestore+0xb8/0x14c kernel/locking/spinlock.c:194
 spin_unlock_irqrestore include/linux/spinlock.h:419 [inline]
 uart_write+0x3b0/0x818 drivers/tty/serial/serial_core.c:574
 handle_tx+0x1e8/0x640 drivers/net/caif/caif_serial.c:236
 caif_xmit+0x10c/0x158 drivers/net/caif/caif_serial.c:282
 __netdev_start_xmit include/linux/netdevice.h:5049 [inline]
 netdev_start_xmit include/linux/netdevice.h:5063 [inline]
 xmit_one net/core/dev.c:3662 [inline]
 dev_hard_start_xmit+0x278/0x830 net/core/dev.c:3678
 __dev_queue_xmit+0x12a4/0x27d4 net/core/dev.c:4305
 dev_queue_xmit+0x24/0x34 net/core/dev.c:4347
 tx+0x98/0x1c8 drivers/block/aoe/aoenet.c:63
 kthread+0x178/0x344 drivers/block/aoe/aoecmd.c:1238
 kthread+0x37c/0x460 kernel/kthread.c:334
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:856