syzbot

watchdog: BUG: soft lockup - CPU#0 stuck for 26s! [aoe_tx0:2060]
Modules linked in:
irq event stamp: 35719483
hardirqs last  enabled at (35719482): [<ffff800011a112b4>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline]
hardirqs last  enabled at (35719482): [<ffff800011a112b4>] _raw_spin_unlock_irqrestore+0x48/0xac kernel/locking/spinlock.c:194
hardirqs last disabled at (35719483): [<ffff800011925e58>] __el1_irq arch/arm64/kernel/entry-common.c:468 [inline]
hardirqs last disabled at (35719483): [<ffff800011925e58>] el1_interrupt+0x24/0x54 arch/arm64/kernel/entry-common.c:486
softirqs last  enabled at (3368): [<ffff80000fd0f768>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32
softirqs last disabled at (3372): [<ffff80000fd0f734>] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19
CPU: 0 PID: 2060 Comm: aoe_tx0 Not tainted 6.1.142-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 : __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
pc : _raw_spin_unlock_irqrestore+0x58/0xac kernel/locking/spinlock.c:194
lr : __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline]
lr : _raw_spin_unlock_irqrestore+0x48/0xac kernel/locking/spinlock.c:194
sp : ffff8000265c7820
x29: ffff8000265c7820 x28: 1fffe0001df90ac0 x27: dfff800000000000
x26: ffff0000efc85600 x25: ffff0000cd9d0fd0 x24: 0000000000000020
x23: 0000000000000020 x22: 0000000000000002 x21: 0000000000000000
x20: ffff80001c61cab0 x19: 0000000000000000 x18: 0000000000000000
x17: ffff8000181b3000 x16: ffff8000082d2400 x15: ffff800017c93fc0
x14: ffff0000d0fa4218 x13: 1ffff00002a100b1 x12: 0000000000ff0100
x11: ff0080000a88b374 x10: 0000000000000003 x9 : 0000000000000080
x8 : 00000000000000c0 x7 : ffff80000b3511e4 x6 : 0000000000000000
x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000
x2 : 0000000000000002 x1 : ffff800011a8d7e0 x0 : ffff80018a730000
Call trace:
 arch_local_irq_restore arch/arm64/include/asm/irqflags.h:122 [inline]
 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline]
 _raw_spin_unlock_irqrestore+0x58/0xac kernel/locking/spinlock.c:194
 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
 uart_write+0x3ac/0x7ec drivers/tty/serial/serial_core.c:584
 handle_tx+0x1ec/0x5f8 drivers/net/caif/caif_serial.c:236
 caif_xmit+0x108/0x150 drivers/net/caif/caif_serial.c:282
 __netdev_start_xmit include/linux/netdevice.h:4896 [inline]
 netdev_start_xmit include/linux/netdevice.h:4910 [inline]
 xmit_one net/core/dev.c:3658 [inline]
 dev_hard_start_xmit+0x244/0x8e0 net/core/dev.c:3674
 __dev_queue_xmit+0x155c/0x309c net/core/dev.c:4334
 dev_queue_xmit include/linux/netdevice.h:3051 [inline]
 tx+0x9c/0x1c8 drivers/block/aoe/aoenet.c:63
 kthread+0x160/0x330 drivers/block/aoe/aoecmd.c:1237
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:849