watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [aoe_tx0:2091] Modules linked in: irq event stamp: 37305199 hardirqs last enabled at (37305198): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (37305198): [] _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:194 hardirqs last disabled at (37305199): [] __el1_irq arch/arm64/kernel/entry-common.c:468 [inline] hardirqs last disabled at (37305199): [] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:486 softirqs last enabled at (12358): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (12362): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 CPU: 1 PID: 2091 Comm: aoe_tx0 Not tainted 6.3.0-rc7-syzkaller-g14f8db1c0f9a #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:152 [inline] pc : _raw_spin_unlock_irqrestore+0x44/0x98 kernel/locking/spinlock.c:194 lr : __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] lr : _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:194 sp : ffff8000241f77e0 x29: ffff8000241f77e0 x28: 1fffe0001b9686c0 x27: ffff0000dcb43600 x26: dfff800000000000 x25: ffff0000ca350fd0 x24: ffff00011ec073b0 x23: 0000000000000020 x22: ffff0000ca350c30 x21: 0000000000000000 x20: ffff80001a287088 x19: 0000000000000000 x18: ffff8000241f7500 x17: 0000000000000000 x16: ffff800008302b70 x15: 0000000000031866 x14: 1ffff00002b900b0 x13: dfff800000000000 x12: 0000000000000003 x11: 0000000000000202 x10: 0000000000000003 x9 : 0000000000000000 x8 : 00000000000000c0 x7 : ffff80000b6dea50 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000002 x1 : ffff80001247b7c0 x0 : ffff80019e6e0000 Call trace: __daif_local_irq_restore arch/arm64/include/asm/irqflags.h:182 [inline] arch_local_irq_restore arch/arm64/include/asm/irqflags.h:202 [inline] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] _raw_spin_unlock_irqrestore+0x44/0x98 kernel/locking/spinlock.c:194 spin_unlock_irqrestore include/linux/spinlock.h:405 [inline] uart_write+0x348/0x868 drivers/tty/serial/serial_core.c:584 handle_tx+0x1f4/0x5f8 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:4884 [inline] netdev_start_xmit include/linux/netdevice.h:4898 [inline] xmit_one net/core/dev.c:3581 [inline] dev_hard_start_xmit+0x240/0x8ac net/core/dev.c:3597 __dev_queue_xmit+0x1858/0x37dc net/core/dev.c:4247 dev_queue_xmit include/linux/netdevice.h:3054 [inline] tx+0x90/0x134 drivers/block/aoe/aoenet.c:63 kthread+0x1ac/0x374 drivers/block/aoe/aoecmd.c:1229 kthread+0x24c/0x2d4 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870