syzbot

watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [aoe_tx0:2062]
Modules linked in:
irq event stamp: 64448041
hardirqs last  enabled at (64448040): [<ffff800011b072cc>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline]
hardirqs last  enabled at (64448040): [<ffff800011b072cc>] _raw_spin_unlock_irqrestore+0x48/0xac kernel/locking/spinlock.c:194
hardirqs last disabled at (64448041): [<ffff800011a1c324>] __el1_irq arch/arm64/kernel/entry-common.c:468 [inline]
hardirqs last disabled at (64448041): [<ffff800011a1c324>] el1_interrupt+0x24/0x54 arch/arm64/kernel/entry-common.c:486
softirqs last  enabled at (1024): [<ffff80000fdc3478>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32
softirqs last disabled at (1028): [<ffff80000fdc3444>] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19
CPU: 1 PID: 2062 Comm: aoe_tx0 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025
pstate: 82400005 (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 : ffff800026917820
x29: ffff800026917820 x28: 1fffe0001d6016c0 x27: dfff800000000000
x26: ffff0000eb00b600 x25: ffff0000cdd60fd0 x24: 0000000000000020
x23: 0000000000000020 x22: 0000000000000002 x21: 0000000000000000
x20: ffff80001c7a1b30 x19: 0000000000000000 x18: ffff800011b7bf60
x17: ffff800018338000 x16: ffff8000082d9364 x15: ffff800017e19000
x14: 0000000000000001 x13: 1ffff000038f4366 x12: 0000000000ff0100
x11: ff0080000a8d8624 x10: 0000000000000003 x9 : 0000000000000080
x8 : 00000000000000c0 x7 : ffff80000b3b7d18 x6 : 0000000000000000
x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000
x2 : 0000000000000002 x1 : ffff800011b7da80 x0 : ffff80018a421000
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+0x3a8/0x7e0 drivers/tty/serial/serial_core.c:584
 handle_tx+0x1ec/0x5e8 drivers/net/caif/caif_serial.c:236
 caif_xmit+0x108/0x14c 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:3670 [inline]
 dev_hard_start_xmit+0x234/0x8cc net/core/dev.c:3686
 __dev_queue_xmit+0x1594/0x3134 net/core/dev.c:4346
 dev_queue_xmit include/linux/netdevice.h:3051 [inline]
 tx+0x9c/0x1c4 drivers/block/aoe/aoenet.c:63
 kthread+0x160/0x338 drivers/block/aoe/aoecmd.c:1241
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850