rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 2630 jiffies s: 51757 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: 26799 Comm: syz.1.10007 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:perf_get_regs_user+0x4ed/0x5a0 arch/x86/kernel/perf_regs.c:137
Code: ff e8 17 ac 98 00 49 89 1f 49 83 c7 08 4c 89 f8 48 c1 e8 03 80 3c 28 00 74 08 4c 89 ff e8 fb ab 98 00 4d 89 37 e9 8c 00 00 00 <49> 81 c7 58 ff ff ff 4c 8b 24 24 4d 8d 74 24 08 4c 89 f0 48 c1 e8
RSP: 0018:ffffc90000007240 EFLAGS: 00000046
RAX: 0000000000000101 RBX: 1ffff11005df2b2c RCX: 642edf5b293f4200
RDX: 0000000000000100 RSI: ffffffff8adef000 RDI: ffffffff8adeefc0
RBP: dffffc0000000000 R08: dffffc0000000000 R09: ffffc900000073c0
R10: fffff52000000e7f R11: 1ffff92000000e78 R12: ffff8880b8e35518
R13: ffff88802ef95960 R14: ffff8880b8e274a0 R15: ffffc90003548000
FS:  00007f36876746c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8ef9986f98 CR3: 00000000773bd000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 perf_sample_regs_user kernel/events/core.c:6775 [inline]
 perf_prepare_sample+0x97c/0x2040 kernel/events/core.c:7591
 __perf_event_output kernel/events/core.c:7730 [inline]
 perf_event_output_forward+0x163/0x2a0 kernel/events/core.c:7750
 __perf_event_overflow+0x448/0x610 kernel/events/core.c:9496
 perf_tp_event+0x335/0xb60 kernel/events/core.c:10029
 perf_trace_run_bpf_submit+0xf3/0x1c0 kernel/events/core.c:10002
 perf_trace_preemptirq_template+0x287/0x330 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_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:728
RIP: 0010:rcu_read_unlock_special+0x84/0x500 kernel/rcu/tree_plugin.h:685
Code: f1 f1 f1 00 f2 f2 f2 4a 89 04 2b 66 42 c7 44 2b 09 f3 f3 42 c6 44 2b 0b f3 65 44 8b 35 3d 97 96 7e 41 f7 c6 00 00 f0 00 74 45 <48> c7 44 24 40 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b
RSP: 0018:ffffc900000079c0 EFLAGS: 00000206
RAX: 642edf5b293f4200 RBX: 1ffff92000000f40 RCX: 642edf5b293f4200
RDX: dffffc0000000000 RSI: ffffffff8a8c0500 RDI: ffffffff8adef020
RBP: ffffc90000007ac0 R08: dffffc0000000000 R09: ffffed10171c6afa
R10: ffffed10171c6afa R11: 1ffff110171c6af9 R12: 0000000000000246
R13: dffffc0000000000 R14: ffff8880b8e3b900 R15: 0000000000000001
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:426
 rcu_read_unlock include/linux/rcupdate.h:823 [inline]
 process_backlog+0x3ff/0x6e0 net/core/dev.c:6024
 __napi_poll+0xc0/0x460 net/core/dev.c:6590
 napi_poll net/core/dev.c:6657 [inline]
 net_rx_action+0x5b1/0xad0 net/core/dev.c:6771
 handle_softirqs+0x2a1/0x920 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x12f/0x220 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:__syscall_enter_from_user_work kernel/entry/common.c:97 [inline]
RIP: 0010:syscall_enter_from_user_mode+0x2a/0x80 kernel/entry/common.c:118
Code: 41 56 53 48 89 f3 49 89 fe 48 8b 7c 24 10 e8 ed fa ff ff 66 90 66 90 e8 f4 83 6f f7 e8 6f 82 6f f7 fb 65 48 8b 05 b6 c6 ea 75 <48> 8b 70 08 40 f6 c6 3f 74 0b 4c 89 f7 5b 41 5e e9 d1 2c 56 f7 48
RSP: 0018:ffffc90003547f08 EFLAGS: 00000286
RAX: ffff88802ef95940 RBX: 00000000000000ca RCX: 642edf5b293f4200
RDX: dffffc0000000000 RSI: ffffffff8a8c0500 RDI: ffffffff8adef020
RBP: ffffc90003547f48 R08: dffffc0000000000 R09: ffffed10171c6afa
R10: ffffed10171c6afa R11: 1ffff110171c6af9 R12: 0000000000000000
R13: 0000000000000000 R14: ffffc90003547f58 R15: 0000000000000000
 do_syscall_64+0x24/0xa0 arch/x86/entry/common.c:77
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f368678eec9
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:00007f36876740e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f36869e5fa8 RCX: 00007f368678eec9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f36869e5fac
RBP: 00007f36869e5fa0 R08: 002679e72b089e3c R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f36869e6038 R14: 00007ffc506b3980 R15: 00007ffc506b3a68
 </TASK>