rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-....: (1 GPs behind) idle=21b/1/0x4000000000000002 softirq=64734/64737 fqs=5248 
	(detected by 1, t=10502 jiffies, g=79253, q=1098)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 19547 Comm: syz.2.5331 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:check_kcov_mode kernel/kcov.c:172 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x1b/0x60 kernel/kcov.c:206
Code: 89 de 5b e9 27 55 44 00 00 00 cc cc 00 00 cc 48 8b 04 24 65 48 8b 0d a4 39 89 7e 65 8b 15 a5 39 89 7e 81 e2 00 01 ff 00 74 11 <81> fa 00 01 00 00 75 35 83 b9 34 16 00 00 00 74 2c 8b 91 10 16 00
RSP: 0018:ffffc90000007488 EFLAGS: 00000006
RAX: ffffffff8197c00f RBX: 0000000000000000 RCX: ffff888049ad1dc0
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffc90000007657 R09: ffffc90000007620
R10: dffffc0000000000 R11: fffff52000000ecb R12: ffff88805828815a
R13: ffffc90000007840 R14: ffff888058288000 R15: ffffc90000007686
FS:  00007f422fcf66c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffa1cf2b6b8 CR3: 000000004098b000 CR4: 00000000003506f0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 __perf_event_header__init_id+0x38f/0x500 kernel/events/core.c:7115
 perf_prepare_sample+0x158/0x1cd0 kernel/events/core.c:7624
 __perf_event_output kernel/events/core.c:7802 [inline]
 perf_event_output_forward+0x185/0x2e0 kernel/events/core.c:7822
 __perf_event_overflow+0x364/0x530 kernel/events/core.c:9515
 perf_swevent_overflow kernel/events/core.c:9591 [inline]
 perf_swevent_event+0x4ad/0x530 kernel/events/core.c:9629
 perf_tp_event+0x383/0xbf0 kernel/events/core.c:10047
 perf_trace_run_bpf_submit+0xf3/0x1c0 kernel/events/core.c:10021
 perf_trace_preemptirq_template+0x2aa/0x360 include/trace/events/preemptirq.h:14
 trace_irq_enable_rcuidle+0x108/0x180 include/trace/events/preemptirq.h:40
 trace_hardirqs_on+0x57/0x80 kernel/trace/trace_preemptirq.c:44
 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:713
RIP: 0010:rcu_read_unlock_special+0x7f/0x4a0 kernel/rcu/tree_plugin.h:674
Code: eb 03 48 b8 f1 f1 f1 f1 f8 f2 f2 f2 4a 89 04 2b 42 c7 44 2b 08 f8 f3 f3 f3 65 44 8b 35 d2 df 9c 7e 41 f7 c6 00 00 f0 00 74 40 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 42 c7 44 2b 08
RSP: 0018:ffffc90000007c60 EFLAGS: 00000206
RAX: e9f4e7d4af2b8300 RBX: 1ffff92000000f90 RCX: e9f4e7d4af2b8300
RDX: dffffc0000000000 RSI: ffffffff8a2b3100 RDI: ffffffff8a7a0700
RBP: ffffc90000007d28 R08: ffff8880b903b30b R09: 1ffff11017207661
R10: dffffc0000000000 R11: ffffed1017207662 R12: ffffffff8c323800
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422
 rcu_read_unlock include/linux/rcupdate.h:772 [inline]
 rebalance_domains+0xa0a/0xb30 kernel/sched/fair.c:10660
 handle_softirqs+0x339/0x830 kernel/softirq.c:576
 __do_softirq kernel/softirq.c:610 [inline]
 invoke_softirq kernel/softirq.c:450 [inline]
 __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:security_capable+0x46/0xb0 security/security.c:809
Code: 00 00 fc ff df e8 6a ff d7 fd 49 c7 c4 00 48 e3 8b 4c 89 e0 48 c1 e8 03 80 3c 18 00 74 08 4c 89 e7 e8 1e 1e 1d fe 4d 8b 24 24 <4d> 85 e4 74 35 4d 8d 6c 24 18 4c 89 e8 48 c1 e8 03 80 3c 18 00 74
RSP: 0018:ffffc90002edfd38 EFLAGS: 00000246
RAX: 1ffffffff17c689e RBX: dffffc0000000000 RCX: ffff888049ad1dc0
RDX: 0000000000000000 RSI: 0000000000000040 RDI: 0000000000000000
RBP: 0000000000000026 R08: ffffc90002edfe9f R09: 1ffff920005dbfd3
R10: dffffc0000000000 R11: fffff520005dbfd4 R12: ffffffff8c8c5670
R13: ffffffff8be34508 R14: ffffffff8c1cd040 R15: ffff88802a8203c0
 ns_capable_common kernel/capability.c:375 [inline]
 ns_capable kernel/capability.c:396 [inline]
 capable+0x69/0xe0 kernel/capability.c:449
 perfmon_capable include/linux/capability.h:259 [inline]
 perf_allow_kernel include/linux/perf_event.h:1358 [inline]
 __do_sys_perf_event_open kernel/events/core.c:12419 [inline]
 __se_sys_perf_event_open+0x1e0/0x1bb0 kernel/events/core.c:12387
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f4231abde59
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:00007f422fcf6028 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f4231d37090 RCX: 00007f4231abde59
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 00002000000000c0
RBP: 00007f4231b53d6f R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4231d37128 R14: 00007f4231d37090 R15: 00007ffebb2641e8
 </TASK>