watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [aoe_tx0:2046] Modules linked in: irq event stamp: 20738793 hardirqs last enabled at (20738792): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] hardirqs last enabled at (20738792): [] _raw_spin_unlock_irqrestore+0xac/0x158 kernel/locking/spinlock.c:194 hardirqs last disabled at (20738793): [] enter_el1_irq_or_nmi+0x10/0x1c arch/arm64/kernel/entry-common.c:227 softirqs last enabled at (5156): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31 softirqs last disabled at (5160): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18 CPU: 0 PID: 2046 Comm: aoe_tx0 Not tainted 5.15.123-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023 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 : ffff8000226d77e0 x29: ffff8000226d77f0 x28: ffff0000d52db600 x27: ffff0000ca8c8be8 x26: 0000000000000001 x25: ffff0000ca8c8f70 x24: ffff0000cfe950b0 x23: 0000000000000020 x22: ffff80000b43e9e4 x21: ffff80001872dcc0 x20: ffff80001872dca8 x19: 0000000000000000 x18: ffff8000226d7520 x17: ff8080000fd8cfc4 x16: ffff8000082ea774 x15: 0000000000035b8e x14: 1ffff0000292006a x13: ffffffffffffffff x12: 0000000000000000 x11: ff8080000a9a5024 x10: 0000000000000003 x9 : 0000000000000080 x8 : 00000000000000c0 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000000 x3 : ffff800008045860 x2 : 0000000000000002 x1 : ffff800011aaac40 x0 : ffff80019ffa7000 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:5018 [inline] netdev_start_xmit include/linux/netdevice.h:5032 [inline] xmit_one net/core/dev.c:3594 [inline] dev_hard_start_xmit+0x2bc/0x92c net/core/dev.c:3610 __dev_queue_xmit+0x13a8/0x2a6c net/core/dev.c:4225 dev_queue_xmit+0x24/0x34 net/core/dev.c:4258 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