watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [aoe_tx0:1378] Modules linked in: irq event stamp: 34814405 hardirqs last enabled at (34814404): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (34814404): [] _raw_spin_unlock_irqrestore+0x48/0x8c kernel/locking/spinlock.c:194 hardirqs last disabled at (34814405): [] __el1_irq arch/arm64/kernel/entry-common.c:455 [inline] hardirqs last disabled at (34814405): [] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:473 softirqs last enabled at (8188): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (8192): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 CPU: 0 PID: 1378 Comm: aoe_tx0 Not tainted 6.0.0-rc4-syzkaller-17255-ga6b443748715 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 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+0x58/0x8c kernel/locking/spinlock.c:194 lr : __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] lr : _raw_spin_unlock_irqrestore+0x48/0x8c kernel/locking/spinlock.c:194 sp : ffff800014a53b80 x29: ffff800014a53b80 x28: ffff0000c4ea0c30 x27: 0000000000000000 x26: ffff80000f0ed9b8 x25: 0000000000000002 x24: 0000000000000001 x23: ffff0000c8bf38b0 x22: 0000000000000020 x21: 0000000000000001 x20: ffff80000f0ed9b8 x19: 0000000000000000 x18: 00000000000000c0 x17: ffff80000dd3a698 x16: ffff80000db78658 x15: ffff0000c42b0000 x14: 0000000000000028 x13: 00000000ffffffff x12: ffff0000c42b0000 x11: ff808000095d7628 x10: 0000000000000000 x9 : 0000000000000080 x8 : 00000000000000c0 x7 : ffff8000098f58f0 x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000002 x1 : ffff80000ce5df15 x0 : ffff8001f1d2f000 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+0x58/0x8c kernel/locking/spinlock.c:194 spin_unlock_irqrestore include/linux/spinlock.h:404 [inline] uart_write+0x204/0x458 drivers/tty/serial/serial_core.c:589 handle_tx+0x10c/0x34c drivers/net/caif/caif_serial.c:236 caif_xmit+0xa4/0xe0 drivers/net/caif/caif_serial.c:282 __netdev_start_xmit include/linux/netdevice.h:4819 [inline] netdev_start_xmit include/linux/netdevice.h:4833 [inline] xmit_one net/core/dev.c:3590 [inline] dev_hard_start_xmit+0xd4/0x1ec net/core/dev.c:3606 __dev_queue_xmit+0x78c/0xc88 net/core/dev.c:4256 dev_queue_xmit include/linux/netdevice.h:3008 [inline] tx+0x74/0x118 drivers/block/aoe/aoenet.c:63 kthread+0x90/0x154 kernel/kthread.c:357 kthread+0x12c/0x158 kernel/kthread.c:376 ret_from_fork+0x10/0x20