rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 1-....: (1 GPs behind) idle=3c7/1/0x4000000000000002 softirq=8128/8129 fqs=2099 (detected by 0, t=10503 jiffies, g=7741, q=2413) Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 4532 Comm: syz.3.71 Not tainted 5.15.178-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:instrument_atomic_write include/linux/instrumented.h:86 [inline] RIP: 0010:set_bit include/asm-generic/bitops/instrumented-atomic.h:28 [inline] RIP: 0010:set_ti_thread_flag include/linux/thread_info.h:89 [inline] RIP: 0010:set_tsk_thread_flag include/linux/sched.h:1970 [inline] RIP: 0010:set_tsk_need_resched include/linux/sched.h:2001 [inline] RIP: 0010:rcu_read_unlock_special+0x2a2/0x520 kernel/rcu/tree_plugin.h:656 Code: 00 00 44 08 64 24 08 0f 84 1b 01 00 00 48 8b 44 24 10 89 c3 c1 eb 09 83 e3 01 65 4c 8b 2d 26 80 96 7e 4c 89 ef be 08 00 00 00 e9 7f 5e 00 f0 41 80 4d 00 08 65 81 25 10 80 96 7e ff ff ff 7f RSP: 0018:ffffc90000dd03a0 EFLAGS: 00000046 RAX: 0000000000000046 RBX: 0000000000000000 RCX: dffffc0000000000 RDX: dffffc0000000000 RSI: 0000000000000008 RDI: ffff888028e65940 RBP: ffffc90000dd0478 R08: ffffffff81a1a5d7 R09: fffffbfff1c150ee R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffff8cb23d00 R13: ffff888028e65940 R14: ffff8880b8f3b180 R15: 1ffff920001ba078 FS: 00007f574bf2d6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000005cfd4000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __rcu_read_unlock+0x92/0x100 kernel/rcu/tree_plugin.h:422 rcu_read_unlock include/linux/rcupdate.h:771 [inline] __perf_event_output kernel/events/core.c:7788 [inline] perf_event_output_forward+0x292/0x310 kernel/events/core.c:7797 __perf_event_overflow+0x35d/0x530 kernel/events/core.c:9490 perf_tp_event+0x363/0xc40 kernel/events/core.c:10022 perf_trace_run_bpf_submit+0xf7/0x1d0 kernel/events/core.c:9996 perf_trace_preemptirq_template+0x31d/0x430 include/trace/events/preemptirq.h:14 trace_irq_enable_rcuidle+0x10e/0x190 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+0x84/0x520 kernel/rcu/tree_plugin.h:671 Code: f1 f1 f1 00 f2 f2 f2 49 89 04 17 66 41 c7 44 17 09 f3 f3 41 c6 44 17 0b f3 65 44 8b 25 4d 82 96 7e 41 f7 c4 00 00 f0 00 74 45 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 3a 00 00 00 00 66 42 c7 44 3a RSP: 0018:ffffc90000dd0b00 EFLAGS: 00000206 RAX: 8c7b146d4307d600 RBX: 1ffff920001ba168 RCX: ffffffff81633dd8 RDX: dffffc0000000000 RSI: ffffffff8aab2b80 RDI: ffffffff8af9f2c0 RBP: ffffc90000dd0bd0 R08: dffffc0000000000 R09: fffffbfff2131828 R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffff8cb23d00 R13: ffff888028e65d98 R14: ffffc90000dd0b40 R15: 1ffff920001ba164 __rcu_read_unlock+0x92/0x100 kernel/rcu/tree_plugin.h:422 rcu_read_unlock include/linux/rcupdate.h:771 [inline] ieee80211_iterate_active_interfaces_atomic+0x12e/0x140 net/mac80211/util.c:831 mac80211_hwsim_beacon+0xa7/0x180 drivers/net/wireless/mac80211_hwsim.c:1865 __run_hrtimer kernel/time/hrtimer.c:1688 [inline] __hrtimer_run_queues+0x598/0xcf0 kernel/time/hrtimer.c:1752 hrtimer_run_softirq+0x196/0x2c0 kernel/time/hrtimer.c:1769 handle_softirqs+0x3a7/0x930 kernel/softirq.c:558 __do_softirq kernel/softirq.c:592 [inline] invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu+0x157/0x240 kernel/softirq.c:641 irq_exit_rcu+0x5/0x20 kernel/softirq.c:653 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:perf_trace_init+0xa7/0x2d0 kernel/trace/trace_event_perf.c:223 Code: eb 0f 84 78 01 00 00 49 c7 c6 c0 d5 b6 8c 48 8d 6b 40 48 89 e8 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 17 01 00 00 48 63 6d 00 <4c> 89 ff 48 89 ee e8 7e df f7 ff 49 39 ef 0f 85 a6 00 00 00 48 8d RSP: 0018:ffffc90002f3fb88 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffffffff8cfa6b20 RCX: ffff888028e65940 RDX: 0000000000000000 RSI: 000000000000073b RDI: 0000000000000116 RBP: 000000000000073a R08: ffffffff8188a7f2 R09: fffff520005e7f31 R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffff8cba79a0 R13: dffffc0000000000 R14: ffffffff8cb6d5c0 R15: 0000000000000116 perf_tp_event_init+0x89/0x110 kernel/events/core.c:10077 perf_try_init_event+0x135/0x3e0 kernel/events/core.c:11553 perf_init_event kernel/events/core.c:11617 [inline] perf_event_alloc+0x1175/0x2180 kernel/events/core.c:11909 __do_sys_perf_event_open kernel/events/core.c:12447 [inline] __se_sys_perf_event_open+0x7e2/0x4510 kernel/events/core.c:12339 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f574e0c4169 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:00007f574bf2d038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007f574e2dcfa0 RCX: 00007f574e0c4169 RDX: 0000000000000001 RSI: ffffffffffffffff RDI: 00004000000003c0 RBP: 00007f574e1452a0 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f574e2dcfa0 R15: 00007ffc83bb9898