rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 2649 jiffies s: 13037 root: 0x1/. rcu: blocking rcu_node structures (internal RCU debug): Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 12990 Comm: syz.3.3510 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 RIP: 0010:check_wait_context kernel/locking/lockdep.c:4728 [inline] RIP: 0010:__lock_acquire+0x653/0x7c50 kernel/locking/lockdep.c:4999 Code: 83 3d e0 93 5b 15 00 0f 84 b4 01 00 00 31 db 48 81 c3 b9 00 00 00 48 89 d8 48 c1 e8 03 42 0f b6 04 00 84 c0 0f 85 37 61 00 00 <45> 84 f6 0f 84 1f 05 00 00 0f b6 1b 48 8b 44 24 50 42 0f b6 04 00 RSP: 0018:ffffc90000006f40 EFLAGS: 00000046 RAX: 0000000000000000 RBX: ffffffff9046c2b9 RCX: ffffffff8162fd13 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff90ae2240 RBP: ffffc90000007190 R08: dffffc0000000000 R09: fffffbfff215c449 R10: fffffbfff215c449 R11: 1ffffffff215c448 R12: ffff88802ff89dc0 R13: 0000000000000000 R14: 0000000000000002 R15: ffff88802ff8a960 FS: 00007fd5ca8596c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1166348f98 CR3: 00000000740e2000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire+0x1b4/0x490 kernel/locking/lockdep.c:5662 rcu_lock_acquire include/linux/rcupdate.h:350 [inline] rcu_read_lock include/linux/rcupdate.h:791 [inline] __perf_output_begin kernel/events/ring_buffer.c:163 [inline] perf_output_begin_forward+0xb5/0xa80 kernel/events/ring_buffer.c:272 __perf_event_output kernel/events/core.c:7732 [inline] perf_event_output_forward+0x179/0x2a0 kernel/events/core.c:7750 __perf_event_overflow+0x448/0x610 kernel/events/core.c:9496 perf_swevent_overflow kernel/events/core.c:9572 [inline] perf_swevent_event+0x4ad/0x530 kernel/events/core.c:9610 perf_tp_event+0x335/0xb60 kernel/events/core.c:10029 perf_trace_run_bpf_submit+0xf3/0x1c0 kernel/events/core.c:10002 perf_trace_preemptirq_template+0x287/0x330 include/trace/events/preemptirq.h:14 trace_irq_enable_rcuidle+0xd3/0x140 include/trace/events/preemptirq.h:40 trace_hardirqs_on+0x24/0x40 kernel/trace/trace_preemptirq.c:44 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:728 RIP: 0010:rcu_read_unlock_special+0x84/0x500 kernel/rcu/tree_plugin.h:685 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 2d 97 96 7e 41 f7 c6 00 00 f0 00 74 45 <48> c7 44 24 40 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b RSP: 0018:ffffc90000007aa0 EFLAGS: 00000206 RAX: 21a7e4416149a600 RBX: 1ffff92000000f5c RCX: 21a7e4416149a600 RDX: dffffc0000000000 RSI: ffffffff8a8c0500 RDI: ffffffff8adefca0 RBP: ffffc90000007b90 R08: dffffc0000000000 R09: fffffbfff215c46c R10: fffffbfff215c46c R11: 1ffffffff215c46b R12: 0000000000000246 R13: dffffc0000000000 R14: ffff8880b8e3b900 R15: 0000000000000001 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:426 rcu_read_unlock include/linux/rcupdate.h:823 [inline] ieee80211_iterate_active_interfaces_atomic+0x156/0x170 net/mac80211/util.c:826 mac80211_hwsim_beacon+0xb7/0x1b0 drivers/net/wireless/mac80211_hwsim.c:2147 __run_hrtimer kernel/time/hrtimer.c:1747 [inline] __hrtimer_run_queues+0x554/0xd60 kernel/time/hrtimer.c:1811 hrtimer_run_softirq+0x183/0x2a0 kernel/time/hrtimer.c:1828 handle_softirqs+0x2a1/0x920 kernel/softirq.c:596 __do_softirq kernel/softirq.c:630 [inline] invoke_softirq kernel/softirq.c:470 [inline] __irq_exit_rcu+0x12f/0x220 kernel/softirq.c:679 irq_exit_rcu+0x5/0x20 kernel/softirq.c:691 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline] sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691 RIP: 0010:generic_exec_single+0x41e/0x490 kernel/smp.c:545 Code: 75 11 e8 15 e8 0a 00 48 85 db 75 16 e8 0b e8 0a 00 eb 15 e8 04 e8 0a 00 e8 3f 7c a1 08 48 85 db 74 ea e8 f5 e7 0a 00 fb 31 c0 <48> c7 44 24 20 0e 36 e0 45 4b c7 44 25 00 00 00 00 00 66 43 c7 44 RSP: 0018:ffffc900051b7a60 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000200 RCX: ffff88802ff89dc0 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc900051b7b30 R08: dffffc0000000000 R09: fffffbfff215c46c R10: fffffbfff215c46c R11: 1ffffffff215c46b R12: dffffc0000000000 R13: 1ffff92000a36f50 R14: 0000000000000000 R15: 1ffff92000a36f71 smp_call_function_single+0x34f/0x560 kernel/smp.c:784 task_function_call kernel/events/core.c:120 [inline] perf_install_in_context+0x59a/0x8f0 kernel/events/core.c:2941 __do_sys_perf_event_open kernel/events/core.c:12784 [inline] __se_sys_perf_event_open+0x1247/0x1e60 kernel/events/core.c:12378 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fd5c998ebe9 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:00007fd5ca859038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007fd5c9bc5fa0 RCX: 00007fd5c998ebe9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000140 RBP: 00007fd5c9a11e19 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007fd5c9bc6038 R14: 00007fd5c9bc5fa0 R15: 00007ffc31b4ed08