watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [aoe_tx0:2046] Modules linked in: irq event stamp: 19503857 hardirqs last enabled at (19503856): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] hardirqs last enabled at (19503856): [] _raw_spin_unlock_irqrestore+0xac/0x158 kernel/locking/spinlock.c:194 hardirqs last disabled at (19503857): [] enter_el1_irq_or_nmi+0x10/0x1c arch/arm64/kernel/entry-common.c:227 softirqs last enabled at (7936): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31 softirqs last disabled at (7940): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18 CPU: 0 PID: 2046 Comm: aoe_tx0 Not tainted 5.15.107-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023 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 : ffff8000222f77e0 x29: ffff8000222f77f0 x28: ffff0000d559f600 x27: ffff0000caa10be8 x26: 0000000000000001 x25: ffff0000caa10f70 x24: ffff0000caba40b0 x23: 0000000000000020 x22: ffff80000b436b64 x21: ffff8000186fabc0 x20: ffff8000186faba8 x19: 0000000000000000 x18: ffff8000222f7520 x17: ff8080000fd7ba5c x16: ffff8000082e9784 x15: ffff80000fd7ba5c x14: 1ffff0000291a06a x13: ffffffffffffffff x12: 0000000000000000 x11: ff8080000a99f844 x10: 0000000000000003 x9 : 0000000000000080 x8 : 00000000000000c0 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000000 x3 : ffff800008045814 x2 : 0000000000000002 x1 : ffff800011a9a980 x0 : ffff80019ffde000 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+0x36c/0x8b8 drivers/tty/serial/serial_core.c:572 handle_tx+0x1f8/0x644 drivers/net/caif/caif_serial.c:236 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:3592 [inline] dev_hard_start_xmit+0x2bc/0x92c net/core/dev.c:3608 __dev_queue_xmit+0x13a8/0x2a6c net/core/dev.c:4223 dev_queue_xmit+0x24/0x34 net/core/dev.c:4256 tx+0x8c/0x130 drivers/block/aoe/aoenet.c:63 kthread+0x1ac/0x374 drivers/block/aoe/aoecmd.c:1230 kthread+0x37c/0x45c kernel/kthread.c:319 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870