rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 0-....: (1 GPs behind) idle=d9b/1/0x4000000000000002 softirq=12457/12458 fqs=5243 (detected by 1, t=10502 jiffies, g=15757, q=2059) Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 6478 Comm: syz.0.595 Not tainted 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 RIP: 0010:perf_misc_flags+0x1/0x1b0 arch/x86/events/core.c:2960 Code: df e8 63 1c bb 00 e9 28 ff ff ff 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 59 fe ff ff 4c 89 ff e8 75 1b bb 00 e9 4c fe ff ff 55 <41> 57 41 56 53 48 89 fb 49 bf 00 00 00 00 00 fc ff df e8 28 b8 76 RSP: 0018:ffffc90000007310 EFLAGS: 00000046 RAX: 0000000000000000 RBX: ffffc900000074c0 RCX: ffff8880206c9dc0 RDX: 0000000000000100 RSI: ffffc90000007680 RDI: ffff8880b9035178 RBP: ffffc90000007410 R08: dffffc0000000000 R09: ffffc90000007460 R10: fffff52000000e93 R11: 1ffff92000000e8c R12: dffffc0000000000 R13: ffffc900000074c6 R14: 1ffff92000000e98 R15: ffffc900000074c4 FS: 00007ff5756fc6c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff5756daf98 CR3: 00000000770dc000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: perf_prepare_sample+0x132/0x1cb0 kernel/events/core.c:7608 __perf_event_output kernel/events/core.c:7788 [inline] perf_event_output_forward+0x146/0x280 kernel/events/core.c:7808 __perf_event_overflow+0x364/0x530 kernel/events/core.c:9501 perf_swevent_overflow kernel/events/core.c:9577 [inline] perf_swevent_event+0x4ad/0x530 kernel/events/core.c:9615 perf_tp_event+0x32c/0xb50 kernel/events/core.c:10033 perf_trace_run_bpf_submit+0xf3/0x1c0 kernel/events/core.c:10007 perf_trace_preemptirq_template+0x2be/0x380 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+0x84/0x480 kernel/rcu/tree_plugin.h:671 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 7d 16 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:ffffc90000007ae0 EFLAGS: 00000206 RAX: 4b59c284ca582b00 RBX: 1ffff92000000f60 RCX: 4b59c284ca582b00 RDX: dffffc0000000000 RSI: ffffffff8a0b15c0 RDI: ffffffff8a599340 RBP: ffffc90000007bb8 R08: dffffc0000000000 R09: fffffbfff1ff6e20 R10: fffffbfff1ff6e20 R11: 1ffffffff1ff6e1f R12: ffffffff8c120800 R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422 rcu_read_unlock include/linux/rcupdate.h:771 [inline] ieee80211_iterate_active_interfaces_atomic+0x132/0x140 net/mac80211/util.c:831 mac80211_hwsim_beacon+0x9b/0x180 drivers/net/wireless/mac80211_hwsim.c:1865 __run_hrtimer kernel/time/hrtimer.c:1690 [inline] __hrtimer_run_queues+0x53d/0xc40 kernel/time/hrtimer.c:1754 hrtimer_run_softirq+0x176/0x240 kernel/time/hrtimer.c:1771 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:finish_lock_switch+0x134/0x280 kernel/sched/core.c:4785 Code: be ff ff ff ff e8 ec be 54 08 85 c0 74 4a 4d 85 ff 75 66 0f 1f 44 00 00 48 89 df e8 36 29 5e 08 e8 21 71 2a 00 fb 48 83 c4 08 <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 48 89 df e8 99 10 fe ff 43 80 3c RSP: 0018:ffffc900034df828 EFLAGS: 00000286 RAX: 4b59c284ca582b00 RBX: ffff8880b903a300 RCX: 4b59c284ca582b00 RDX: dffffc0000000000 RSI: ffffffff8a0b15c0 RDI: ffffffff8a599340 RBP: 1ffff1101720760b R08: dffffc0000000000 R09: fffffbfff1ff6e20 R10: fffffbfff1ff6e20 R11: 1ffffffff1ff6e1f R12: 1ffff110172075b9 R13: dffffc0000000000 R14: ffff8880b903adc8 R15: 0000000000000000 finish_task_switch+0x12f/0x640 kernel/sched/core.c:4902 context_switch kernel/sched/core.c:5033 [inline] __schedule+0x11c0/0x43b0 kernel/sched/core.c:6376 preempt_schedule_irq+0xb1/0x150 kernel/sched/core.c:6780 irqentry_exit+0x63/0x70 kernel/entry/common.c:432 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676 RIP: 0010:perf_trace_init+0x9e/0x2d0 kernel/trace/trace_event_perf.c:223 Code: 40 99 16 8c 0f 84 75 01 00 00 4c 89 24 24 4c 8d 63 40 4c 89 e0 48 c1 e8 03 42 0f b6 04 30 84 c0 0f 85 17 01 00 00 4d 63 24 24 <4c> 89 ff 4c 89 e6 e8 37 50 f8 ff 4d 39 e7 0f 85 a9 00 00 00 4c 8d RSP: 0018:ffffc900034dfc08 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffffffff8c53bfa0 RCX: 0000000000080000 RDX: ffffc90003c63000 RSI: 0000000000024ffd RDI: 0000000000024ffe RBP: 0000000000000002 R08: dffffc0000000000 R09: fffffbfff182d312 R10: fffffbfff182d312 R11: 1ffffffff182d311 R12: 0000000000000604 R13: 0000000000000000 R14: dffffc0000000000 R15: 00000000000000eb perf_tp_event_init+0x89/0x110 kernel/events/core.c:10088 perf_try_init_event+0x12b/0x3d0 kernel/events/core.c:11587 perf_init_event kernel/events/core.c:11651 [inline] perf_event_alloc+0xfcf/0x2240 kernel/events/core.c:11943 __do_sys_perf_event_open kernel/events/core.c:12481 [inline] __se_sys_perf_event_open+0x6c5/0x1b80 kernel/events/core.c:12373 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: 0033:0x7ff577494be9 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:00007ff5756fc038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007ff5776bbfa0 RCX: 00007ff577494be9 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000140 RBP: 00007ff577517e19 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007ff5776bc038 R14: 00007ff5776bbfa0 R15: 00007ffcb4221cf8