watchdog: BUG: soft lockup - CPU#0 stuck for 143s! [aoe_tx0:1299] Modules linked in: irq event stamp: 514505695 hardirqs last enabled at (514505694): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (514505694): [] _raw_spin_unlock_irqrestore+0x85/0x110 kernel/locking/spinlock.c:194 hardirqs last disabled at (514505695): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1052 softirqs last enabled at (12362): [] local_bh_disable include/linux/bottom_half.h:20 [inline] softirqs last enabled at (12362): [] rcu_read_lock_bh include/linux/rcupdate.h:918 [inline] softirqs last enabled at (12362): [] __dev_queue_xmit+0x284/0x3740 net/core/dev.c:4736 softirqs last disabled at (12366): [] local_bh_disable include/linux/bottom_half.h:20 [inline] softirqs last disabled at (12366): [] rcu_read_lock_bh include/linux/rcupdate.h:918 [inline] softirqs last disabled at (12366): [] __dev_queue_xmit+0x284/0x3740 net/core/dev.c:4736 CPU: 0 UID: 0 PID: 1299 Comm: aoe_tx0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0xa8/0x110 kernel/locking/spinlock.c:194 Code: 74 05 e8 0b 66 71 f6 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f6 44 24 21 02 75 4f f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 53 77 39 f6 65 8b 05 ec 94 1c 07 85 c0 74 40 48 c7 04 24 0e 36 RSP: 0018:ffffc90003f17640 EFLAGS: 00000206 RAX: c173ae128552d500 RBX: 0000000000000a02 RCX: c173ae128552d500 RDX: 0000000000000002 RSI: ffffffff8d77a730 RDI: 0000000000000001 RBP: ffffc90003f176c8 R08: ffffffff8f7d6677 R09: 1ffffffff1efacce R10: dffffc0000000000 R11: fffffbfff1efaccf R12: dffffc0000000000 R13: dffffc0000000000 R14: ffffffff99b3fb20 R15: 1ffff920007e2ec8 FS: 0000000000000000(0000) GS:ffff888125ee9000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000001180 CR3: 0000000079cf0000 CR4: 00000000003526f0 DR0: ffffffffffffffff DR1: 00000000000001f8 DR2: 0000000000000083 DR3: ffffffffefffff15 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: spin_unlock_irqrestore include/linux/spinlock.h:406 [inline] uart_port_unlock_irqrestore include/linux/serial_core.h:788 [inline] uart_port_unlock_deref+0x111/0x2f0 drivers/tty/serial/serial_core.c:91 uart_write_room+0xe4/0x170 drivers/tty/serial/serial_core.c:647 handle_tx+0x163/0x610 drivers/net/caif/caif_serial.c:212 __netdev_start_xmit include/linux/netdevice.h:5263 [inline] netdev_start_xmit include/linux/netdevice.h:5272 [inline] xmit_one net/core/dev.c:3853 [inline] dev_hard_start_xmit+0x2d7/0x830 net/core/dev.c:3869 __dev_queue_xmit+0x172a/0x3740 net/core/dev.c:4811 dev_queue_xmit include/linux/netdevice.h:3371 [inline] tx+0x6b/0x190 drivers/block/aoe/aoenet.c:62 kthread+0x1d0/0x3e0 drivers/block/aoe/aoecmd.c:1241 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 RIP: 0010:pv_native_safe_halt+0x13/0x20 arch/x86/kernel/paravirt.c:82 Code: cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 13 fa 13 00 f3 0f 1e fa fb f4 c8 ea 02 00 cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc90000197de0 EFLAGS: 000002c6 RAX: d590206c1d109700 RBX: ffffffff8196e347 RCX: d590206c1d109700 RDX: 0000000000000001 RSI: ffffffff8d77a730 RDI: ffffffff8bbf2140 RBP: ffffc90000197f10 R08: ffff8880b8732fdb R09: 1ffff110170e65fb R10: dffffc0000000000 R11: ffffed10170e65fc R12: ffffffff8f7d6670 R13: 0000000000000001 R14: 0000000000000001 R15: 1ffff11003adeb58 FS: 0000000000000000(0000) GS:ffff888125fe9000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000032000 CR3: 00000000311ae000 CR4: 00000000003526f0 DR0: ffffffffffffffff DR1: 00000000000001f8 DR2: 0000000000000083 DR3: ffffffffefffff15 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: arch_safe_halt arch/x86/include/asm/paravirt.h:107 [inline] default_idle+0x13/0x20 arch/x86/kernel/process.c:767 default_idle_call+0x73/0xb0 kernel/sched/idle.c:122 cpuidle_idle_call kernel/sched/idle.c:190 [inline] do_idle+0x1e7/0x510 kernel/sched/idle.c:330 cpu_startup_entry+0x44/0x60 kernel/sched/idle.c:428 start_secondary+0x101/0x110 arch/x86/kernel/smpboot.c:312 common_startup_64+0x13e/0x147