rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 0-....: (1 GPs behind) idle=36f/1/0x4000000000000000 softirq=20597/20602 fqs=2099 (detected by 1, t=10502 jiffies, g=25273, q=1529) Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 13941 Comm: syz.1.2869 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 RIP: 0010:trace_irq_enable_rcuidle+0xfd/0x180 include/trace/events/preemptirq.h:40 Code: c9 e0 f9 ff 49 83 c7 08 4c 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 08 4c 89 ff e8 c6 48 3e 00 49 8b 3f <4c> 89 f6 48 89 da e8 d8 f8 ff ff eb 0f e8 91 e0 f9 ff e9 06 ff ff RSP: 0018:ffffc90000007b78 EFLAGS: 00000046 RAX: 1ffff1100b3d9623 RBX: 0000000000000000 RCX: dffffc0000000000 RDX: 0000000000000100 RSI: 0000000000000004 RDI: ffffffff8c167500 RBP: 0000000000000001 R08: dffffc0000000000 R09: ffffed1017207662 R10: ffffed1017207662 R11: 1ffff11017207661 R12: 0000000000000000 R13: 0000000000000000 R14: ffffffff89c00e46 R15: ffff888059ecb118 FS: 00007f431e2fe6c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c003d16000 CR3: 000000005a27e000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: 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+0x84/0x480 kernel/rcu/tree_plugin.h:674 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 ed 11 9e 7e 41 f7 c6 00 00 f0 00 74 45 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b RSP: 0018:ffffc90000007c60 EFLAGS: 00000206 RAX: 9eb458d67ae89800 RBX: 1ffff92000000f90 RCX: 9eb458d67ae89800 RDX: dffffc0000000000 RSI: ffffffff8a0b1c60 RDI: ffffffff8a59e580 RBP: ffffc90000007d28 R08: dffffc0000000000 R09: fffffbfff1ff7c1a R10: fffffbfff1ff7c1a R11: 1ffffffff1ff7c19 R12: ffffffff8c120c00 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+0xa51/0xb80 kernel/sched/fair.c:10660 handle_softirqs+0x328/0x820 kernel/softirq.c:576 __do_softirq kernel/softirq.c:610 [inline] invoke_softirq kernel/softirq.c:450 [inline] __irq_exit_rcu+0x12f/0x220 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 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676 RIP: 0010:generic_exec_single+0x360/0x450 kernel/smp.c:532 Code: df eb 27 e8 92 55 0b 00 0f 0b e9 ce fd ff ff e8 86 55 0b 00 e8 51 f7 3c 08 48 85 db 0f 84 5c ff ff ff e8 73 55 0b 00 fb 31 c0 <48> c7 44 24 20 0e 36 e0 45 4b c7 44 3d 00 00 00 00 00 66 43 c7 44 RSP: 0018:ffffc9000648fa60 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000200 RCX: ffff88807b491dc0 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc9000648fb30 R08: dffffc0000000000 R09: fffffbfff1ff7c1a R10: fffffbfff1ff7c1a R11: 1ffffffff1ff7c19 R12: ffffc9000648fb88 R13: 1ffff92000c91f50 R14: 0000000000000000 R15: dffffc0000000000 smp_call_function_single+0x1e2/0x490 kernel/smp.c:755 cpu_function_call kernel/events/core.c:153 [inline] perf_install_in_context+0x512/0x8f0 kernel/events/core.c:2974 __do_sys_perf_event_open kernel/events/core.c:12793 [inline] __se_sys_perf_event_open+0x1283/0x1b80 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: 0033:0x7f431ecb0749 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:00007f431e2fe038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007f431ef07090 RCX: 00007f431ecb0749 RDX: 0000000000000000 RSI: ffffffffffffffff RDI: 00002000000003c0 RBP: 00007f431ed34f91 R08: 0000000000000002 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007f431ef07128 R14: 00007f431ef07090 R15: 00007ffd43017e68