watchdog: BUG: soft lockup - CPU#1 stuck for 26s! [aoe_tx0:2222] Modules linked in: irq event stamp: 49341185 hardirqs last enabled at (49341184): [<ffff80008a91868c>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (49341184): [<ffff80008a91868c>] _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:194 hardirqs last disabled at (49341185): [<ffff80008a826d1c>] __el1_irq arch/arm64/kernel/entry-common.c:499 [inline] hardirqs last disabled at (49341185): [<ffff80008a826d1c>] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:517 softirqs last enabled at (7332): [<ffff800088a1b414>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (7336): [<ffff800088a1b3e0>] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 CPU: 1 PID: 2222 Comm: aoe_tx0 Not tainted 6.7.0-rc6-syzkaller-gaafe7ad77b91 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 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 : ffff80009c747800 x29: ffff80009c747800 x28: ffff0000d3ce67f0 x27: ffff0000d3ce6780 x26: ffff0000daaf2ce8 x25: ffff0000d7d05020 x24: 0000000000000001 x23: 0000000000000000 x22: 0000000000000000 x21: dfff800000000000 x20: ffff800092d78060 x19: 0000000000000000 x18: ffff80009c7474c0 x17: 0000000000034b9f x16: ffff800080316be4 x15: 0000000000000001 x14: 1ffff000125af00c x13: 0000000000000000 x12: 0000000000000003 x11: 0000000000000202 x10: 0000000000000003 x9 : 0000000000000000 x8 : 00000000000000c0 x7 : ffff800083873c0c x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000002 x1 : ffff80008a99d720 x0 : ffff800125d0c000 Call trace: __daif_local_irq_restore arch/arm64/include/asm/irqflags.h:176 [inline] arch_local_irq_restore arch/arm64/include/asm/irqflags.h:196 [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:406 [inline] uart_port_unlock_irqrestore include/linux/serial_core.h:667 [inline] uart_write_room+0x140/0x2d0 drivers/tty/serial/serial_core.c:630 tty_write_room+0x6c/0x8c drivers/tty/tty_ioctl.c:69 handle_tx+0x120/0x604 drivers/net/caif/caif_serial.c:226 caif_xmit+0x108/0x150 drivers/net/caif/caif_serial.c:282 __netdev_start_xmit include/linux/netdevice.h:4940 [inline] netdev_start_xmit include/linux/netdevice.h:4954 [inline] xmit_one net/core/dev.c:3545 [inline] dev_hard_start_xmit+0x240/0x8ac net/core/dev.c:3561 __dev_queue_xmit+0x1570/0x31d8 net/core/dev.c:4346 dev_queue_xmit include/linux/netdevice.h:3134 [inline] tx+0x90/0x134 drivers/block/aoe/aoenet.c:62 kthread+0x1ac/0x374 drivers/block/aoe/aoecmd.c:1229 kthread+0x288/0x310 kernel/kthread.c:388 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:857 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.7.0-rc6-syzkaller-gaafe7ad77b91 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : arch_local_irq_enable+0x8/0xc arch/arm64/include/asm/irqflags.h:51 lr : default_idle_call+0xf8/0x128 kernel/sched/idle.c:103 sp : ffff80008e467cd0 x29: ffff80008e467cd0 x28: dfff800000000000 x27: 1ffff00011c8cfa8 x26: ffff80008e4ed000 x25: 0000000000000000 x24: 0000000000000001 x23: 1ffff00011c9da74 x22: ffff80008e4ed3a0 x21: 0000000000000000 x20: ffff80008e514d00 x19: ffff8000802c7494 x18: 1fffe000368261ce x17: ffff80008e4ed000 x16: ffff8000802c6d58 x15: 0000000000000001 x14: 1fffe00036827d48 x13: 0000000000000000 x12: 0000000000000003 x11: 0000000000000001 x10: 0000000000000003 x9 : 0000000000000000 x8 : 0000000000ce0b59 x7 : ffff800080455818 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : ffff80008a82ab5c x2 : 0000000000000000 x1 : ffff80008a99d720 x0 : ffff800125cea000 Call trace: __daif_local_irq_enable arch/arm64/include/asm/irqflags.h:27 [inline] arch_local_irq_enable+0x8/0xc arch/arm64/include/asm/irqflags.h:49 cpuidle_idle_call kernel/sched/idle.c:170 [inline] do_idle+0x1f0/0x4e8 kernel/sched/idle.c:282 cpu_startup_entry+0x5c/0x74 kernel/sched/idle.c:380 rest_init+0x2dc/0x2f4 init/main.c:730 start_kernel+0x0/0x4e8 init/main.c:827 start_kernel+0x3e8/0x4e8 init/main.c:1072 __primary_switched+0xb4/0xbc arch/arm64/kernel/head.S:523