rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 1-....: (1 GPs behind) idle=a78c/1/0x4000000000000000 softirq=38272/38273 fqs=5182 rcu: hardirqs softirqs csw/system rcu: number: 1044239 0 0 rcu: cputime: 19634 32855 43 ==> 52500(ms) rcu: (t=10502 jiffies g=48905 q=289 ncpus=2) CPU: 1 PID: 12631 Comm: syz.3.2267 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline] RIP: 0010:_raw_spin_unlock_irq+0x29/0x50 kernel/locking/spinlock.c:202 Code: 00 f3 0f 1e fa 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 0a 04 ef f6 48 89 df e8 22 d6 ef f6 e8 3d 7c 13 f7 fb bf 01 00 00 00 62 f8 e2 f6 65 8b 05 53 41 8b 75 85 c0 74 02 5b c3 e8 70 25 88 RSP: 0018:ffffc900001f0cb0 EFLAGS: 00000282 RAX: 15c75d1d443edb00 RBX: ffff8880b8f29580 RCX: 15c75d1d443edb00 RDX: dffffc0000000000 RSI: ffffffff8aaabce0 RDI: 0000000000000001 RBP: ffffc900001f0e10 R08: ffffffff90da85ff R09: 1ffffffff21b50bf R10: dffffc0000000000 R11: fffffbfff21b50c0 R12: ffff8880b8f29580 R13: 1ffff110171e52b8 R14: ffff88802b4dec10 R15: ffffc900001f0d60 FS: 00007f550a74e6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffe8d3b3578 CR3: 0000000030085000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff1 DR7: 0000000000000600 Call Trace: expire_timers kernel/time/timer.c:1750 [inline] __run_timers+0x51e/0x7d0 kernel/time/timer.c:2022 run_timer_softirq+0x67/0xf0 kernel/time/timer.c:2035 handle_softirqs+0x280/0x820 kernel/softirq.c:578 __do_softirq kernel/softirq.c:612 [inline] invoke_softirq kernel/softirq.c:452 [inline] __irq_exit_rcu+0xc7/0x190 kernel/softirq.c:661 irq_exit_rcu+0x9/0x20 kernel/softirq.c:673 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline] sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687 RIP: 0010:generic_exec_single+0x476/0x4f0 kernel/smp.c:418 Code: 75 11 e8 3d e6 0a 00 48 85 db 75 16 e8 33 e6 0a 00 eb 15 e8 2c e6 0a 00 e8 47 24 f4 08 48 85 db 74 ea e8 1d e6 0a 00 fb 31 c0 <48> c7 44 24 20 0e 36 e0 45 4b c7 04 2c 00 00 00 00 66 43 c7 44 2c RSP: 0018:ffffc90019bf7a00 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000200 RCX: 0000000000080000 RDX: ffffc9000d50c000 RSI: 000000000000308f RDI: 0000000000003090 RBP: ffffc90019bf7ad0 R08: ffffffff90da85ff R09: 1ffffffff21b50bf R10: dffffc0000000000 R11: fffffbfff21b50c0 R12: 1ffff9200337ef44 R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff9200337ef65 smp_call_function_single+0x352/0x580 kernel/smp.c:647 task_function_call kernel/events/core.c:120 [inline] perf_install_in_context+0x591/0x8e0 kernel/events/core.c:2948 __do_sys_perf_event_open kernel/events/core.c:12915 [inline] __se_sys_perf_event_open+0x17fa/0x1c20 kernel/events/core.c:12567 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f550998f749 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:00007f550a74e038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007f5509be5fa0 RCX: 00007f550998f749 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000140 RBP: 00007f5509a13f91 R08: 0000000000000002 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007f5509be6038 R14: 00007f5509be5fa0 R15: 00007fffe83b67d8