rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 1-....: (1 GPs behind) idle=ea1c/1/0x4000000000000000 softirq=45119/45120 fqs=4301 rcu: hardirqs softirqs csw/system rcu: number: 959768 0 0 rcu: cputime: 12223 40245 82 ==> 52470(ms) rcu: (t=10500 jiffies g=57897 q=907 ncpus=2) CPU: 1 PID: 12427 Comm: syz.3.1842 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026 RIP: 0010:should_resched arch/x86/include/asm/preempt.h:104 [inline] RIP: 0010:__local_bh_enable_ip+0x142/0x1c0 kernel/softirq.c:413 Code: 8a e8 72 e7 44 09 65 66 8b 05 7a a6 b0 7e 66 85 c0 75 54 bf 01 00 00 00 e8 3b 25 0a 00 e8 d6 42 3b 00 fb 65 8b 05 46 a6 b0 7e <85> c0 75 05 e8 35 8b ad ff 48 c7 04 24 0e 36 e0 45 4b c7 04 37 00 RSP: 0018:ffffc900001f0b00 EFLAGS: 00000286 RAX: 0000000000000101 RBX: 0000000000000200 RCX: d4dc1f6561048300 RDX: dffffc0000000000 RSI: ffffffff8aead140 RDI: ffffffff8b3c5260 RBP: ffffc900001f0b90 R08: ffffffff92223617 R09: 1ffffffff24446c2 R10: dffffc0000000000 R11: fffffbfff24446c3 R12: ffffffff85b2ce3a R13: ffff88807952b420 R14: dffffc0000000000 R15: 1ffff9200003e160 FS: 00007f43253be6c0(0000) GS:ffff8880b8d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000100000000 CR3: 000000007a544000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000200000000ac0 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: call_timer_fn+0x189/0x540 kernel/time/timer.c:1701 expire_timers kernel/time/timer.c:1752 [inline] __run_timers+0x570/0x810 kernel/time/timer.c:2023 run_timer_softirq+0x67/0xf0 kernel/time/timer.c:2036 handle_softirqs+0x27d/0x820 kernel/softirq.c:578 __do_softirq kernel/softirq.c:612 [inline] invoke_softirq kernel/softirq.c:452 [inline] __irq_exit_rcu+0xd3/0x190 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+0x477/0x4e0 kernel/smp.c:418 Code: 75 11 e8 2c 15 0b 00 48 85 db 75 16 e8 22 15 0b 00 eb 15 e8 1b 15 0b 00 e8 f6 18 1b 09 48 85 db 74 ea e8 0c 15 0b 00 fb 31 c0 <48> c7 44 24 20 0e 36 e0 45 4b c7 04 2c 00 00 00 00 43 c7 44 2c 08 RSP: 0018:ffffc9000c48fa00 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000200 RCX: ffff88802cfd0000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc9000c48fad0 R08: ffffffff92223607 R09: 1ffffffff24446c0 R10: dffffc0000000000 R11: fffffbfff24446c1 R12: 1ffff92001891f44 R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff92001891f65 smp_call_function_single+0x36d/0x5a0 kernel/smp.c:647 task_function_call kernel/events/core.c:120 [inline] perf_install_in_context+0x5bb/0x920 kernel/events/core.c:2959 __do_sys_perf_event_open kernel/events/core.c:12952 [inline] __se_sys_perf_event_open+0x180d/0x1d40 kernel/events/core.c:12594 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f432459fb19 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:00007f43253be028 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007f4324825fa0 RCX: 00007f432459fb19 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000840 RBP: 00007f4324637b70 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007f4324826038 R14: 00007f4324825fa0 R15: 00007ffcf3a5e388