syzbot

watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [aoe_tx0:2055]
Modules linked in:
irq event stamp: 20859515
hardirqs last  enabled at (20859514): [<ffff800011b8f340>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
hardirqs last  enabled at (20859514): [<ffff800011b8f340>] _raw_spin_unlock_irqrestore+0xac/0x158 kernel/locking/spinlock.c:194
hardirqs last disabled at (20859515): [<ffff800011ab7110>] enter_el1_irq_or_nmi+0x10/0x1c arch/arm64/kernel/entry-common.c:227
softirqs last  enabled at (956): [<ffff80000feeb854>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31
softirqs last disabled at (960): [<ffff80000feeb820>] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18
CPU: 1 PID: 2055 Comm: aoe_tx0 Not tainted 5.15.173-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
pstate: 80400005 (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+0xbc/0x158 kernel/locking/spinlock.c:194
lr : __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
lr : _raw_spin_unlock_irqrestore+0xac/0x158 kernel/locking/spinlock.c:194
sp : ffff800025c17820
x29: ffff800025c17830 x28: ffff0000cdd3f430 x27: ffff0000cdd3f3c0
x26: ffff0000c8258ca8 x25: ffff0000caeb0018 x24: 0000000000000000
x23: dfff800000000000 x22: ffff80000b472edc x21: ffff80001ba5fe80
x20: ffff80001ba5fe68 x19: 0000000000000000 x18: ffff800025c17540
x17: 0000000000000000 x16: ffff8000082ec8b8 x15: 000000000000bea1
x14: 1ffff0000295806a x13: dfff800000000000 x12: 0000000000000003
x11: 0000000000000202 x10: 0000000000000003 x9 : 0000000000000080
x8 : 00000000000000c0 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000080 x4 : 0000000000000000 x3 : ffff80000804605c
x2 : 0000000000000002 x1 : ffff800011c0ad00 x0 : ffff80019f79b000
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+0xbc/0x158 kernel/locking/spinlock.c:194
 spin_unlock_irqrestore include/linux/spinlock.h:418 [inline]
 uart_write_room+0x168/0x300 drivers/tty/serial/serial_core.c:605
 tty_write_room+0x6c/0x8c drivers/tty/tty_ioctl.c:79
 handle_tx+0x124/0x644 drivers/net/caif/caif_serial.c:226
 caif_xmit+0x10c/0x160 drivers/net/caif/caif_serial.c:282
 __netdev_start_xmit include/linux/netdevice.h:5019 [inline]
 netdev_start_xmit include/linux/netdevice.h:5033 [inline]
 xmit_one net/core/dev.c:3617 [inline]
 dev_hard_start_xmit+0x2bc/0x92c net/core/dev.c:3633
 __dev_queue_xmit+0x1378/0x2ac8 net/core/dev.c:4256
 dev_queue_xmit+0x24/0x34 net/core/dev.c:4289
 tx+0x94/0x1cc drivers/block/aoe/aoenet.c:63
 kthread+0x1ac/0x374 drivers/block/aoe/aoecmd.c:1238
 kthread+0x37c/0x45c kernel/kthread.c:334
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870