watchdog: BUG: soft lockup - CPU#0 stuck for 143s! [syz.3.27:5403] Modules linked in: irq event stamp: 10716149 hardirqs last enabled at (10716148): [] irqentry_exit+0x63/0x90 kernel/entry/common.c:357 hardirqs last disabled at (10716149): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1043 softirqs last enabled at (10646066): [] __do_softirq kernel/softirq.c:588 [inline] softirqs last enabled at (10646066): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last enabled at (10646066): [] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 softirqs last disabled at (10646069): [] __do_softirq kernel/softirq.c:588 [inline] softirqs last disabled at (10646069): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last disabled at (10646069): [] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 CPU: 0 UID: 0 PID: 5403 Comm: syz.3.27 Not tainted 6.10.0-syzkaller-12680-gb97ce54743e5 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 RIP: 0010:lockdep_enabled kernel/locking/lockdep.c:115 [inline] RIP: 0010:lock_release+0xd0/0xa30 kernel/locking/lockdep.c:5772 Code: be 08 00 00 00 e8 c0 1d 8b 00 48 0f a3 1d f0 c5 a7 0e 73 16 e8 a1 ce 09 00 84 c0 75 0d 80 3d c0 98 91 0e 00 0f 84 fc 05 00 00 <48> c7 c0 4c cb 17 90 48 c1 e8 03 42 0f b6 04 38 84 c0 0f 85 1f 06 RSP: 0018:ffffc90000007420 EFLAGS: 00000202 RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff816fd4f0 RDX: 0000000000000000 RSI: ffffffff8c606a00 RDI: ffffffff8c6069c0 RBP: ffffc90000007548 R08: ffffffff90179aef R09: 1ffffffff202f35d R10: dffffc0000000000 R11: fffffbfff202f35e R12: 1ffff92000000e90 R13: ffffffff8a7963f4 R14: ffffffff8a7963f4 R15: dffffc0000000000 FS: 00007f152316f6c0(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007efdf6515090 CR3: 000000004aa30000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rcu_lock_release include/linux/rcupdate.h:336 [inline] rcu_read_unlock include/linux/rcupdate.h:869 [inline] run_filter+0x20c/0x260 net/packet/af_packet.c:2149 packet_rcv+0x3c7/0x13e0 net/packet/af_packet.c:2221 deliver_skb net/core/dev.c:2237 [inline] __netif_receive_skb_core+0x13a2/0x4570 net/core/dev.c:5551 __netif_receive_skb_one_core net/core/dev.c:5658 [inline] __netif_receive_skb+0x12f/0x650 net/core/dev.c:5774 process_backlog+0x662/0x15b0 net/core/dev.c:6107 __napi_poll+0xcb/0x490 net/core/dev.c:6771 napi_poll net/core/dev.c:6840 [inline] net_rx_action+0x89b/0x1240 net/core/dev.c:6962 handle_softirqs+0x2c4/0x970 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [inline] invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:preempt_schedule_irq+0xf6/0x1c0 kernel/sched/core.c:6851 Code: 89 f5 49 c1 ed 03 eb 0d 48 f7 03 08 00 00 00 0f 84 8b 00 00 00 bf 01 00 00 00 e8 25 1c a5 f5 e8 c0 24 dd f5 fb bf 01 00 00 00 55 ad ff ff 43 80 7c 3d 00 00 74 08 4c 89 f7 e8 d5 2b 3d f6 48 RSP: 0018:ffffc900046e7420 EFLAGS: 00000282 RAX: 56c6520c1ecf8400 RBX: 1ffff920008dce8c RCX: ffffffff817020fa RDX: dffffc0000000000 RSI: ffffffff8c0ad5a0 RDI: 0000000000000001 RBP: ffffc900046e74e0 R08: ffffffff93726807 R09: 1ffffffff26e4d00 R10: dffffc0000000000 R11: fffffbfff26e4d01 R12: 1ffff920008dce84 R13: 1ffff920008dce88 R14: ffffc900046e7440 R15: dffffc0000000000 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:core_kernel_text+0x72/0xa0 kernel/extable.c:75 Code: b6 04 08 84 c0 75 2c 83 3d 5a df b7 0e 01 77 18 48 c7 c0 00 50 74 91 48 39 c3 72 0c 48 c7 c0 af 2d 8e 91 48 39 c3 72 02 31 ed <89> e8 5b 5d c3 cc cc cc cc 48 c7 c1 40 58 17 90 80 e1 07 80 c1 03 RSP: 0018:ffffc900046e75a8 EFLAGS: 00000287 RAX: ffffffff8c000000 RBX: ffffffff816fade4 RCX: ffffffff9311a203 RDX: ffff88801bb53c00 RSI: 0000000000000001 RDI: ffffffff816fade4 RBP: 0000000000000001 R08: ffffffff8135137d R09: 1ffffffff26e4d00 R10: dffffc0000000000 R11: fffffbfff26e4d01 R12: 1ffff920008dcee4 R13: dffffc0000000000 R14: 0000000000000001 R15: ffffffff816fade4 __text_poke+0x148/0xd30 arch/x86/kernel/alternative.c:1874 text_poke arch/x86/kernel/alternative.c:1984 [inline] text_poke_bp_batch+0x8cd/0xb30 arch/x86/kernel/alternative.c:2373 text_poke_flush arch/x86/kernel/alternative.c:2486 [inline] text_poke_finish+0x30/0x50 arch/x86/kernel/alternative.c:2493 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146 static_key_enable_cpuslocked+0x136/0x260 kernel/jump_label.c:210 static_key_enable+0x1a/0x20 kernel/jump_label.c:223 tracepoint_add_func+0x953/0x9e0 kernel/tracepoint.c:361 tracepoint_probe_register_prio kernel/tracepoint.c:511 [inline] tracepoint_probe_register+0x105/0x160 kernel/tracepoint.c:531 perf_trace_event_reg kernel/trace/trace_event_perf.c:129 [inline] perf_trace_event_init+0x478/0x930 kernel/trace/trace_event_perf.c:202 perf_trace_init+0x243/0x2e0 kernel/trace/trace_event_perf.c:226 perf_tp_event_init+0x8d/0x110 kernel/events/core.c:10244 perf_try_init_event+0x139/0x3f0 kernel/events/core.c:11719 perf_init_event kernel/events/core.c:11789 [inline] perf_event_alloc+0x131a/0x22d0 kernel/events/core.c:12069 __do_sys_perf_event_open kernel/events/core.c:12576 [inline] __se_sys_perf_event_open+0xb43/0x38d0 kernel/events/core.c:12467 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: 0033:0x7f15223799b9 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:00007f152316f038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007f1522515f80 RCX: 00007f15223799b9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000040 RBP: 00007f15223e78d8 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f1522515f80 R15: 00007fff8cad5528 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 19 Comm: rcu_exp_gp_kthr Not tainted 6.10.0-syzkaller-12680-gb97ce54743e5 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 RIP: 0010:serial8250_console_write+0x10/0x1770 drivers/tty/serial/8250/8250_port.c:3340 Code: ff e9 b4 fb ff ff 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 55 48 89 e5 41 57 41 56 41 55 41 54 <53> 48 83 e4 e0 48 81 ec a0 01 00 00 89 54 24 08 48 89 74 24 40 49 RSP: 0018:ffffc90000187770 EFLAGS: 00000006 RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffff8880182e3c00 RDX: 0000000000000042 RSI: ffffffff94f5ee40 RDI: ffffffff9524bf60 RBP: ffffc90000187790 R08: ffffffff853d4893 R09: 1ffffffff26e4d00 R10: dffffc0000000000 R11: ffffffff853d4850 R12: 1ffff92000030f19 R13: ffffffff8f12ffe0 R14: ffffffff853d4850 R15: 1ffffffff1cf9f88 FS: 0000000000000000(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055bc3691b8e8 CR3: 000000004ce30000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: console_emit_next_record kernel/printk/printk.c:2983 [inline] console_flush_all+0x865/0xfd0 kernel/printk/printk.c:3049 console_unlock+0x13b/0x4d0 kernel/printk/printk.c:3118 vprintk_emit+0x5a6/0x770 kernel/printk/printk.c:2348 _printk+0xd5/0x120 kernel/printk/printk.c:2373 synchronize_rcu_expedited_wait kernel/rcu/tree_exp.h:609 [inline] rcu_exp_wait_wake kernel/rcu/tree_exp.h:660 [inline] rcu_exp_sel_wait_wake+0xde6/0x1db0 kernel/rcu/tree_exp.h:694 kthread_worker_fn+0x500/0xaf0 kernel/kthread.c:842 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