watchdog: BUG: soft lockup - CPU#0 stuck for 143s! [syz.2.10:5933] Modules linked in: irq event stamp: 10990561 hardirqs last enabled at (10990560): [] irqentry_exit+0x63/0x90 kernel/entry/common.c:357 hardirqs last disabled at (10990561): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1049 softirqs last enabled at (10941702): [] __do_softirq kernel/softirq.c:588 [inline] softirqs last enabled at (10941702): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last enabled at (10941702): [] __irq_exit_rcu+0xf7/0x220 kernel/softirq.c:655 softirqs last disabled at (10941705): [] __do_softirq kernel/softirq.c:588 [inline] softirqs last disabled at (10941705): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last disabled at (10941705): [] __irq_exit_rcu+0xf7/0x220 kernel/softirq.c:655 CPU: 0 UID: 0 PID: 5933 Comm: syz.2.10 Not tainted 6.13.0-rc1-syzkaller-00023-g3bfb49d73fc2 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0xd8/0x140 kernel/locking/spinlock.c:194 Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 be 49 37 f6 f6 44 24 21 02 75 52 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 43 74 9a f5 65 8b 05 24 c6 30 74 85 c0 74 43 48 c7 04 24 0e 36 RSP: 0018:ffffc90000007960 EFLAGS: 00000206 RAX: 13978f91eb338c00 RBX: 1ffff92000000f30 RCX: ffffffff817b246a RDX: dffffc0000000000 RSI: ffffffff8c0a9680 RDI: 0000000000000001 RBP: ffffc90000007a00 R08: ffffffff942b899f R09: 1ffffffff2857133 R10: dffffc0000000000 R11: fffffbfff2857134 R12: dffffc0000000000 R13: 1ffff92000000f2c R14: ffffc90000007980 R15: 0000000000000246 FS: 00007fc1c52596c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b30019ff8 CR3: 000000007bcc0000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: spin_unlock_irqrestore include/linux/spinlock.h:406 [inline] aoenet_xmit+0x12d/0x1a0 drivers/block/aoe/aoenet.c:122 aoecmd_cfg+0x7e8/0x840 drivers/block/aoe/aoecmd.c:1371 call_timer_fn+0x187/0x650 kernel/time/timer.c:1793 expire_timers kernel/time/timer.c:1844 [inline] __run_timers kernel/time/timer.c:2418 [inline] __run_timer_base+0x66a/0x8e0 kernel/time/timer.c:2430 run_timer_base kernel/time/timer.c:2439 [inline] run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2449 handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [inline] invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu+0xf7/0x220 kernel/softirq.c:655 irq_exit_rcu+0x9/0x30 kernel/softirq.c:671 instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline] sysvec_irq_work+0xa3/0xc0 arch/x86/kernel/irq_work.c:17 asm_sysvec_irq_work+0x1a/0x20 arch/x86/include/asm/idtentry.h:738 RIP: 0010:in_lock_functions+0x4/0x30 kernel/locking/spinlock.c:412 Code: ff ff ff 48 c7 c7 00 8e 2f 96 e8 77 59 8e 00 e9 62 ff ff ff 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa <48> c7 c0 70 0a d3 8b 48 39 c7 0f 93 c0 48 c7 c1 5a 44 d3 8b 48 39 RSP: 0018:ffffc900044bf378 EFLAGS: 00000246 RAX: 0000000000000001 RBX: ffff888035510000 RCX: 1ffff92000897e4c RDX: dffffc0000000000 RSI: ffffffff8c0a9680 RDI: ffffffff8bd16db1 RBP: ffffc900044bf428 R08: ffffffff942b8887 R09: 1ffffffff2857110 R10: dffffc0000000000 R11: fffffbfff2857111 R12: 1ffff92000897e78 R13: 0000000000000000 R14: ffffffff8bd16db1 R15: dffffc0000000000 get_lock_parent_ip include/linux/ftrace.h:999 [inline] preempt_latency_start kernel/sched/core.c:5829 [inline] preempt_schedule_common+0x43/0xd0 kernel/sched/core.c:6934 preempt_schedule+0xe1/0xf0 kernel/sched/core.c:6959 preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk.S:12 on_each_cpu_cond_mask+0x79/0x80 kernel/smp.c:1052 on_each_cpu include/linux/smp.h:71 [inline] text_poke_sync arch/x86/kernel/alternative.c:2114 [inline] text_poke_bp_batch+0x352/0xb30 arch/x86/kernel/alternative.c:2324 text_poke_bp+0xb0/0x100 arch/x86/kernel/alternative.c:2551 __static_call_transform+0x51a/0x810 arch/x86/kernel/static_call.c:111 arch_static_call_transform+0x141/0x380 arch/x86/kernel/static_call.c:163 __static_call_update+0xd8/0x5e0 kernel/static_call_inline.c:147 bpf_dispatcher_update kernel/bpf/dispatcher.c:126 [inline] bpf_dispatcher_change_prog+0xe6a/0xf20 kernel/bpf/dispatcher.c:168 bpf_prog_test_run_xdp+0x753/0x11e0 net/bpf/test_run.c:1316 bpf_prog_test_run+0x2e4/0x360 kernel/bpf/syscall.c:4402 __sys_bpf+0x48d/0x810 kernel/bpf/syscall.c:5808 __do_sys_bpf kernel/bpf/syscall.c:5897 [inline] __se_sys_bpf kernel/bpf/syscall.c:5895 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5895 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fc1c437ff19 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fc1c5259058 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007fc1c4545fa0 RCX: 00007fc1c437ff19 RDX: 0000000000000050 RSI: 0000000020000600 RDI: 000000000000000a RBP: 00007fc1c43f3986 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fc1c4545fa0 R15: 00007ffe00c4e188 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 1296 Comm: aoe_tx0 Not tainted 6.13.0-rc1-syzkaller-00023-g3bfb49d73fc2 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:io_serial_in+0x76/0xb0 drivers/tty/serial/8250/8250_port.c:409 Code: 50 2c 47 fc 89 e9 41 d3 e6 48 83 c3 40 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 91 13 b2 fc 44 03 33 44 89 f2 ec <0f> b6 c0 5b 41 5e 41 5f 5d c3 cc cc cc cc 89 e9 80 e1 07 38 c1 7c RSP: 0018:ffffc900049def18 EFLAGS: 00000006 RAX: 1ffffffff34e0b05 RBX: ffffffff9a705820 RCX: 0000000000000000 RDX: 00000000000003f9 RSI: 0000000000000000 RDI: 0000000000000020 RBP: 0000000000000000 R08: ffffffff855845c6 R09: fffff5200093bdc4 R10: dffffc0000000000 R11: ffffffff85584580 R12: dffffc0000000000 R13: 1ffff9200093be00 R14: 00000000000003f9 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc0c521153b CR3: 0000000033dde000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: serial_port_in include/linux/serial_core.h:791 [inline] serial8250_console_write+0x4de/0x1ed0 drivers/tty/serial/8250/8250_port.c:3376 console_emit_next_record kernel/printk/printk.c:3122 [inline] console_flush_all+0x869/0xeb0 kernel/printk/printk.c:3210 __console_flush_and_unlock kernel/printk/printk.c:3269 [inline] console_unlock+0x14f/0x3b0 kernel/printk/printk.c:3309 vprintk_emit+0x730/0xa10 kernel/printk/printk.c:2432 dev_vprintk_emit+0x2ae/0x330 drivers/base/core.c:4935 dev_printk_emit+0xdd/0x120 drivers/base/core.c:4946 __netdev_printk+0x3e0/0x4d0 net/core/dev.c:11932 netdev_warn+0x122/0x170 net/core/dev.c:11985 ieee802154_subif_start_xmit+0x134/0x190 net/mac802154/tx.c:245 __netdev_start_xmit include/linux/netdevice.h:5002 [inline] netdev_start_xmit include/linux/netdevice.h:5011 [inline] xmit_one net/core/dev.c:3590 [inline] dev_hard_start_xmit+0x27a/0x7d0 net/core/dev.c:3606 sch_direct_xmit+0x29c/0x5d0 net/sched/sch_generic.c:343 __dev_xmit_skb net/core/dev.c:3827 [inline] __dev_queue_xmit+0x1a8f/0x3f50 net/core/dev.c:4400 dev_queue_xmit include/linux/netdevice.h:3168 [inline] tx+0x6b/0x180 drivers/block/aoe/aoenet.c:62 kthread+0x23a/0x450 drivers/block/aoe/aoecmd.c:1237 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244