rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 0-....: (1 GPs behind) idle=5d1/1/0x4000000000000000 softirq=28217/28218 fqs=5152 (detected by 1, t=10502 jiffies, g=30829, q=154135) Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 8502 Comm: syz.2.3902 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 RIP: 0010:perf_event_output_forward+0x222/0x280 kernel/events/core.c:7823 Code: 01 48 c7 c7 80 b5 12 8a be 02 03 00 00 48 c7 c2 20 b6 12 8a e8 7f 5a 08 08 e8 7a f1 cd ff 48 c7 c7 60 c7 11 8c e8 7e 49 02 00 <48> c7 44 24 20 0e 36 e0 45 48 b8 00 00 00 00 00 fc ff df 41 c7 44 RSP: 0018:ffffc90000007480 EFLAGS: 00000046 RAX: 20eb9fa78bcf0a00 RBX: 0000000000000001 RCX: 20eb9fa78bcf0a00 RDX: 0000000000000002 RSI: ffffffff8a0b2f00 RDI: ffffffff8a59e580 RBP: ffffc90000007590 R08: dffffc0000000000 R09: fffffbfff1ad33a6 R10: fffffbfff1ad33a6 R11: 1ffffffff1ad33a5 R12: 00000000ffffffe4 R13: 1ffff92000000e94 R14: ffffc900000074c0 R15: ffffc90000007680 FS: 0000555582511500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c0009b8000 CR3: 0000000021f93000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __perf_event_overflow+0x364/0x530 kernel/events/core.c:9515 perf_tp_event+0x32c/0xb50 kernel/events/core.c:10047 perf_trace_run_bpf_submit+0xf3/0x1c0 kernel/events/core.c:10021 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: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:ffffc90000007ae0 EFLAGS: 00000206 RAX: 20eb9fa78bcf0a00 RBX: 1ffff92000000f60 RCX: 20eb9fa78bcf0a00 RDX: dffffc0000000000 RSI: ffffffff8a0b1c60 RDI: ffffffff8a59e580 RBP: ffffc90000007bb8 R08: dffffc0000000000 R09: fffffbfff1ff7c1c R10: fffffbfff1ff7c1c R11: 1ffffffff1ff7c1b 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] 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:1685 [inline] __hrtimer_run_queues+0x53d/0xc40 kernel/time/hrtimer.c:1749 hrtimer_run_softirq+0x176/0x240 kernel/time/hrtimer.c:1766 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:lock_acquire+0x1f2/0x3f0 kernel/locking/lockdep.c:5627 Code: 00 9c 8f 84 24 80 00 00 00 f6 84 24 81 00 00 00 02 0f 85 f6 00 00 00 41 f7 c6 00 02 00 00 74 01 fb 48 c7 44 24 60 0e 36 e0 45 <4b> c7 44 3d 00 00 00 00 00 66 43 c7 44 3d 09 00 00 43 c6 44 3d 0b RSP: 0018:ffffc90004237ca0 EFLAGS: 00000206 RAX: 0000000000000001 RBX: 0000000000000000 RCX: 20eb9fa78bcf0a00 RDX: 0000000000000000 RSI: ffffffff8a0b2f00 RDI: ffffffff8a59e580 RBP: ffffc90004237db8 R08: dffffc0000000000 R09: fffffbfff1ff7c1c R10: fffffbfff1ff7c1c R11: 1ffffffff1ff7c1b R12: ffff88802b90c498 R13: 1ffff92000846fa0 R14: 0000000000000246 R15: dffffc0000000000 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:364 [inline] pick_file+0x2e/0x220 fs/file.c:623 __range_close fs/file.c:689 [inline] __close_range+0x1cd/0x4d0 fs/file.c:747 __do_sys_close_range fs/open.c:1408 [inline] __se_sys_close_range fs/open.c:1405 [inline] __x64_sys_close_range+0x76/0x80 fs/open.c:1405 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: 0033:0x7f9d8aa14fc9 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:00007fff7c3e54a8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: ffffffffffffffda RBX: 0000000000049b48 RCX: 00007f9d8aa14fc9 RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000001 R09: 000000037c3e579f R10: 0000001b2e220000 R11: 0000000000000246 R12: 00007f9d8ac6bfac R13: 00007f9d8ac6bfa0 R14: ffffffffffffffff R15: 0000000000000003