rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 2658 jiffies s: 28617 root: 0x2/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 7869 Comm: syz.6.952 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:memset_erms+0xb/0x10 arch/x86/lib/memset_64.S:65
Code: 03 40 0f b6 f6 48 b8 01 01 01 01 01 01 01 01 48 0f af c6 f3 48 ab 89 d1 f3 aa 4c 89 c8 c3 90 49 89 f9 40 88 f0 48 89 d1 f3 aa <4c> 89 c8 c3 90 49 89 fa 40 0f b6 ce 48 b8 01 01 01 01 01 01 01 01
RSP: 0018:ffffc900001e0060 EFLAGS: 00000002
RAX: 0000000000000000 RBX: ffffc900001e01a0 RCX: 0000000000000000
RDX: 0000000000000010 RSI: 0000000000000000 RDI: ffffc900001e0200
RBP: ffffffff8e7e4fe8 R08: dffffc0000000000 R09: ffffc900001e01f0
R10: fffff5200003c040 R11: 1ffff9200003c03e R12: 1ffff9200003c035
R13: dffffc0000000000 R14: ffffc900001e01f0 R15: ffffc900001e01d5
FS:  00007f424674e6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055558735d808 CR3: 0000000077b60000 CR4: 00000000003506e0
DR0: fffffffffffffffc DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 unwind_next_frame+0xb8a/0x20b0 arch/x86/kernel/unwind_orc.c:546
 perf_callchain_kernel+0x3a4/0x5f0 arch/x86/events/core.c:2805
 get_perf_callchain+0x224/0x470 kernel/events/callchain.c:204
 perf_callchain kernel/events/core.c:7512 [inline]
 perf_prepare_sample+0x399/0x2040 kernel/events/core.c:7545
 __perf_event_output kernel/events/core.c:7730 [inline]
 perf_event_output_forward+0x163/0x2a0 kernel/events/core.c:7750
 __perf_event_overflow+0x448/0x610 kernel/events/core.c:9496
 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 bd 5f 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:ffffc900001e0aa0 EFLAGS: 00000206
RAX: 78b639e89c6d6200 RBX: 1ffff9200003c15c RCX: 78b639e89c6d6200
RDX: dffffc0000000000 RSI: ffffffff8a6c0600 RDI: ffffffff8abefec0
RBP: ffffc900001e0b90 R08: dffffc0000000000 R09: ffffed10171e6b02
R10: ffffed10171e6b02 R11: 1ffff110171e6b01 R12: 0000000000000246
R13: dffffc0000000000 R14: ffff8880b8f3b900 R15: 0000000000000002
 __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
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:seqcount_lockdep_reader_access+0x17b/0x1c0 include/linux/seqlock.h:105
Code: 00 4d 85 e4 75 16 e8 44 91 0f 00 eb 15 e8 3d 91 0f 00 e8 08 b4 9f 08 4d 85 e4 74 ea e8 2e 91 0f 00 fb 48 c7 04 24 0e 36 e0 45 <4b> c7 04 3e 00 00 00 00 66 43 c7 44 3e 09 00 00 43 c6 44 3e 0b 00
RSP: 0018:ffffc900052d7a80 EFLAGS: 00000283
RAX: ffffffff81717892 RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc9000e1f7000 RSI: 000000000001d2a7 RDI: 000000000001d2a8
RBP: ffffc900052d7b38 R08: dffffc0000000000 R09: ffffed10171e6b02
R10: ffffed10171e6b02 R11: 1ffff110171e6b01 R12: 0000000000000200
R13: 1ffff92000a5af84 R14: 1ffff92000a5af50 R15: dffffc0000000000
 ktime_get_with_offset+0x90/0x320 kernel/time/timekeeping.c:889
 ktime_get_boottime include/linux/timekeeping.h:95 [inline]
 ktime_get_boottime_ns include/linux/timekeeping.h:164 [inline]
 bpf_prog_load+0xfd1/0x15a0 kernel/bpf/syscall.c:2644
 __sys_bpf+0x520/0x6d0 kernel/bpf/syscall.c:5030
 __do_sys_bpf kernel/bpf/syscall.c:5134 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5132 [inline]
 __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:5132
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f424598f749
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:00007f424674e038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f4245be5fa0 RCX: 00007f424598f749
RDX: 0000000000000094 RSI: 0000200000002c80 RDI: 0000000000000005
RBP: 00007f4245a13f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4245be6038 R14: 00007f4245be5fa0 R15: 00007fff3afde348
 </TASK>