rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 0-....: (1 GPs behind) idle=011/1/0x4000000000000002 softirq=12061/12062 fqs=5243 (detected by 1, t=10502 jiffies, g=15721, q=1597) Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 6202 Comm: syz.1.472 Not tainted 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 RIP: 0010:hlock_class kernel/locking/lockdep.c:197 [inline] RIP: 0010:check_wait_context kernel/locking/lockdep.c:4687 [inline] RIP: 0010:__lock_acquire+0x5d5/0x7c60 kernel/locking/lockdep.c:4962 Code: 24 89 c3 81 e3 ff 1f 00 00 c1 e8 03 25 f8 03 00 00 48 8d b8 c0 70 fb 8f be 08 00 00 00 e8 73 28 60 00 48 0f a3 1d 3b 70 9f 0e <73> 1a 48 8d 04 5b c1 e0 06 48 8d 98 80 ef 93 8f 49 b8 00 00 00 00 RSP: 0018:ffffc90000007060 EFLAGS: 00000057 RAX: 0000000000000001 RBX: 0000000000000015 RCX: ffffffff815c007d RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8ffb70c0 RBP: ffffc900000072b0 R08: dffffc0000000000 R09: fffffbfff1ff6e19 R10: fffffbfff1ff6e19 R11: 1ffffffff1ff6e18 R12: ffff8880205cc6b8 R13: ffff8880205cbb80 R14: 0000000000000002 R15: ffff8880205cc698 FS: 00007f610e2276c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3be5bcd198 CR3: 000000004bb2f000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: lock_acquire+0x197/0x3f0 kernel/locking/lockdep.c:5623 rcu_lock_acquire+0x2a/0x30 include/linux/rcupdate.h:312 rcu_read_lock include/linux/rcupdate.h:739 [inline] __perf_event_output kernel/events/core.c:7786 [inline] perf_event_output_forward+0x9e/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: 03eedf29849e5700 RBX: 1ffff92000000f60 RCX: 03eedf29849e5700 RDX: dffffc0000000000 RSI: ffffffff8a0b15c0 RDI: ffffffff8a599340 RBP: ffffc90000007bb8 R08: dffffc0000000000 R09: ffffed101720765a R10: ffffed101720765a R11: 1ffff11017207659 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:ffffc90003b5f348 EFLAGS: 00000286 RAX: 03eedf29849e5700 RBX: ffff8880b903a300 RCX: 03eedf29849e5700 RDX: dffffc0000000000 RSI: ffffffff8a0b15c0 RDI: ffffffff8a599340 RBP: 1ffff1101720760b R08: dffffc0000000000 R09: ffffed101720765a R10: ffffed101720765a R11: 1ffff11017207659 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:__mutex_lock_common+0x118/0x2390 kernel/locking/mutex.c:575 Code: 8b 74 24 18 75 32 49 8d 7e 60 48 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 05 e8 cc 84 0b f8 4d 39 76 60 <48> 8d bc 24 e0 00 00 00 0f 85 6e 17 00 00 ba 28 00 00 00 31 f6 e8 RSP: 0018:ffffc90003b5f720 EFLAGS: 00000246 RAX: 1ffff1100bf32315 RBX: ffffffff8197779a RCX: dffffc0000000000 RDX: ffff8880205cbb80 RSI: ffffffff8a0b2860 RDI: ffff88805f9918a8 RBP: ffffc90003b5f8c0 R08: ffffffff8197779a R09: 0000000000000000 R10: ffffed100bf32302 R11: 1ffff1100bf32301 R12: 0000000000000000 R13: 0000000000000000 R14: ffff88805f991848 R15: 0000000000000000 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743 perf_event_exit_task_context kernel/events/core.c:13083 [inline] perf_event_exit_task+0x2ca/0x8f0 kernel/events/core.c:13149 do_exit+0x59c/0x20a0 kernel/exit.c:868 do_group_exit+0x12e/0x300 kernel/exit.c:997 get_signal+0x6ca/0x12c0 kernel/signal.c:2900 arch_do_signal_or_restart+0xc1/0x1300 arch/x86/kernel/signal.c:867 handle_signal_work kernel/entry/common.c:154 [inline] exit_to_user_mode_loop+0x9e/0x130 kernel/entry/common.c:178 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:214 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline] syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:307 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f610ffe0be9 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:00007f610e227038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: 000000000000000f RBX: 00007f6110208090 RCX: 00007f610ffe0be9 RDX: 0000000000000000 RSI: 0000200000000080 RDI: ffffffffffffff9c RBP: 00007f6110063e19 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f6110208128 R14: 00007f6110208090 R15: 00007ffd24f22a18