rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 2676 jiffies s: 3141 root: 0x1/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4510 Comm: syz.0.30 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026
RIP: 0010:lock_acquire+0x27/0x4a0 kernel/locking/lockdep.c:5758
Code: 95 c0 c3 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48 81 ec e0 00 00 00 4c 89 4c 24 20 4c 89 44 24 30 48 89 4c 24 28 <89> d3 89 74 24 14 48 89 7c 24 18 65 48 8b 04 25 28 00 00 00 48 89
RSP: 0018:ffffc90000006ee0 EFLAGS: 00000082
RAX: ffffffff81a540be RBX: 1ffff92000000e04 RCX: 0000000000000002
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8db2daa0
RBP: ffffc90000006fe8 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed1005216502 R12: ffffc90000007340
R13: ffffc900000070a0 R14: dffffc0000000000 R15: ffff8880290b23a0
FS:  0000555577653500(0000) GS:ffff8880b8c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30d63fff CR3: 0000000027d90000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 rcu_lock_acquire include/linux/rcupdate.h:350 [inline]
 rcu_read_lock include/linux/rcupdate.h:791 [inline]
 __perf_event_output kernel/events/core.c:7719 [inline]
 perf_event_output_forward+0xdf/0x2f0 kernel/events/core.c:7741
 __perf_event_overflow+0x457/0x630 kernel/events/core.c:9487
 perf_swevent_overflow+0x19b/0x230 kernel/events/core.c:9570
 perf_swevent_event+0x458/0x570 kernel/events/core.c:-1
 perf_tp_event+0x36b/0xc10 kernel/events/core.c:10055
 perf_trace_run_bpf_submit+0xf3/0x1c0 kernel/events/core.c:10023
 perf_trace_preemptirq_template+0x268/0x320 include/trace/events/preemptirq.h:14
 trace_irq_enable_rcuidle+0xd3/0x140 include/trace/events/preemptirq.h:40
 trace_hardirqs_on+0x24/0x40 kernel/trace/trace_preemptirq.c:44
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xbc/0x120 kernel/locking/spinlock.c:194
Code: c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f7 44 24 20 00 02 00 00 41 c6 04 07 f8 75 4b f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> 9f 64 17 f7 65 8b 05 30 01 c1 75 85 c0 74 3c 48 c7 04 24 0e 36
RSP: 0018:ffffc90000007780 EFLAGS: 00000206
RAX: dffffc0000000004 RBX: 0000000000000a06 RCX: 125aa275852a3e00
RDX: dffffc0000000000 RSI: ffffffff8aac1cc0 RDI: 0000000000000001
RBP: ffffc90000007808 R08: ffffffff91b62307 R09: 1ffffffff236c460
R10: dffffc0000000000 R11: fffffbfff236c461 R12: dffffc0000000000
R13: ffff8880b8c28440 R14: ffff8880b8c28440 R15: 1ffff92000000ef0
 __mod_timer+0x925/0xd20 kernel/time/timer.c:1134
 sk_reset_timer+0x1f/0xb0 net/core/sock.c:3413
 tcp_event_new_data_sent+0x20b/0x370 net/ipv4/tcp_output.c:81
 tcp_write_xmit+0x1950/0x6420 net/ipv4/tcp_output.c:2729
 tcp_send_loss_probe+0x200/0x970 net/ipv4/tcp_output.c:2845
 tcp_write_timer+0x126/0x280 net/ipv4/tcp_timer.c:676
 call_timer_fn+0x1ac/0x670 kernel/time/timer.c:1701
 expire_timers kernel/time/timer.c:1752 [inline]
 __run_timers+0x56c/0x810 kernel/time/timer.c:2023
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:2036
 handle_softirqs+0x291/0x910 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:679
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:691
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:generic_exec_single+0x427/0x4a0 kernel/smp.c:545
Code: 75 11 e8 3c 1a 0b 00 48 85 db 75 16 e8 32 1a 0b 00 eb 15 e8 2b 1a 0b 00 e8 96 09 c0 08 48 85 db 74 ea e8 1c 1a 0b 00 fb 31 c0 <48> c7 44 24 20 0e 36 e0 45 4b c7 44 25 00 00 00 00 00 43 c7 44 25
RSP: 0018:ffffc90003367a60 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000200 RCX: ffff888032288000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90003367b30 R08: ffffffff91b6235f R09: 1ffffffff236c46b
R10: dffffc0000000000 R11: fffffbfff236c46c R12: dffffc0000000000
R13: 1ffff9200066cf50 R14: 0000000000000000 R15: 1ffff9200066cf71
 smp_call_function_single+0x371/0x5a0 kernel/smp.c:784
 task_function_call kernel/events/core.c:120 [inline]
 perf_install_in_context+0x5cf/0x930 kernel/events/core.c:2952
 __do_sys_perf_event_open kernel/events/core.c:12812 [inline]
 __se_sys_perf_event_open+0x1277/0x1eb0 kernel/events/core.c:12406
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f87b7b9fb19
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffcef1be5a8 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f87b7e25fa0 RCX: 00007f87b7b9fb19
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 00002000000003c0
RBP: 00007f87b7c37b70 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f87b7e25fac R14: 00007f87b7e25fa0 R15: 00007f87b7e25fa0
 </TASK>