rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 2684 jiffies s: 31393 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: 9884 Comm: syz.1.1494 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:preempt_count_sub+0x1/0x160 kernel/sched/core.c:5733
Code: c7 c1 a8 13 20 8e 80 e1 07 80 c1 03 38 c1 0f 8c 6e ff ff ff 48 c7 c7 a8 13 20 8e e8 b9 93 7a 00 89 df e9 5b ff ff ff 66 90 55 <53> 48 bb 00 00 00 00 00 fc ff df 48 c7 c0 40 e1 bf 96 48 c1 e8 03
RSP: 0018:ffffc900000071e0 EFLAGS: 00000082
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 8e33a20b795a6900
RDX: 0000000000000100 RSI: ffffffff8a81e5e0 RDI: 0000000000000001
RBP: ffffc90000007330 R08: ffffc900000073b7 R09: ffffc90000007380
R10: dffffc0000000000 R11: fffff52000000e77 R12: dffffc0000000000
R13: ffff88807d674800 R14: 0000000000000000 R15: dffffc0000000000
FS:  00007f0cfb53e6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1565be9f00 CR3: 0000000028fc8000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 kvm_get_running_vcpu virt/kvm/kvm_main.c:5841 [inline]
 kvm_guest_state+0x36/0xf0 virt/kvm/kvm_main.c:5858
 perf_guest_state include/linux/perf_event.h:1332 [inline]
 perf_misc_flags+0x1d/0xc0 arch/x86/events/core.c:3041
 perf_prepare_sample+0x12f/0x2020 kernel/events/core.c:7529
 __perf_event_output kernel/events/core.c:7730 [inline]
 perf_event_output_forward+0x197/0x2f0 kernel/events/core.c:7750
 __perf_event_overflow+0x448/0x610 kernel/events/core.c:9496
 perf_swevent_overflow+0x19b/0x230 kernel/events/core.c:9579
 perf_swevent_event+0x458/0x570 kernel/events/core.c:-1
 perf_tp_event+0x3e7/0xc30 kernel/events/core.c:10064
 perf_trace_run_bpf_submit+0xf3/0x1c0 kernel/events/core.c:10032
 perf_trace_preemptirq_template+0x268/0x320 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+0x7f/0x510 kernel/rcu/tree_plugin.h:685
Code: eb 03 48 b8 f1 f1 f1 f1 f8 f2 f2 f2 4a 89 04 2b 42 c7 44 2b 08 f8 f3 f3 f3 65 44 8b 35 d2 33 95 7e 41 f7 c6 00 00 f0 00 74 40 <48> c7 44 24 40 0e 36 e0 45 4a c7 04 2b 00 00 00 00 42 c7 44 2b 08
RSP: 0018:ffffc90000007ac0 EFLAGS: 00000206
RAX: 8e33a20b795a6900 RBX: 1ffff92000000f60 RCX: 8e33a20b795a6900
RDX: dffffc0000000000 RSI: ffffffff8a8c10a0 RDI: ffffffff8adf0d20
RBP: ffffc90000007bb0 R08: ffff8880b8e3580b R09: 1ffff110171c6b01
R10: dffffc0000000000 R11: ffffed10171c6b02 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+0x54a/0xd50 kernel/time/hrtimer.c:1811
 hrtimer_run_softirq+0x183/0x2a0 kernel/time/hrtimer.c:1828
 handle_softirqs+0x2a1/0x930 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x13b/0x230 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:__kmem_cache_alloc_node+0x163/0x260 mm/slub.c:3398
Code: 89 ea e8 e0 2a 00 00 48 8b 5c 24 10 65 48 8b 04 25 28 00 00 00 48 3b 44 24 18 75 74 48 89 d8 48 83 c4 20 5b 41 5c 41 5d 41 5e <41> 5f 5d c3 bf 01 00 00 00 e8 8f 3b 86 ff 49 8b 1e e8 e7 2a 5b 08
RSP: 0018:ffffc9000cc3ef28 EFLAGS: 00000282
RAX: ffff888077cec7a8 RBX: 00000000ffffffff RCX: 0000000000000000
RDX: 0000000000000008 RSI: 0000000000000000 RDI: ffff888077cec7b0
RBP: 0000000000100cc0 R08: ffffffff8e1fdeef R09: ffff888077cec7a8
R10: dffffc0000000000 R11: fffffbfff1c3fbde R12: ffff888017441280
R13: 0000000000000000 R14: 0000000000000008 R15: ffff888077cec7a8
 __do_kmalloc_node mm/slab_common.c:935 [inline]
 __kmalloc_node_track_caller+0x9e/0x230 mm/slab_common.c:956
 __do_krealloc mm/slab_common.c:1336 [inline]
 krealloc+0x6a/0x100 mm/slab_common.c:1369
 copy_array kernel/bpf/verifier.c:955 [inline]
 copy_verifier_state+0xe6/0xb10 kernel/bpf/verifier.c:1139
 push_stack+0x1a5/0x510 kernel/bpf/verifier.c:1237
 check_cond_jmp_op+0x9b1/0x2060 kernel/bpf/verifier.c:10473
 do_check kernel/bpf/verifier.c:12733 [inline]
 do_check_common+0x79d5/0xc6d0 kernel/bpf/verifier.c:14937
 do_check_main kernel/bpf/verifier.c:15000 [inline]
 bpf_check+0xb08f/0x10db0 kernel/bpf/verifier.c:15577
 bpf_prog_load+0x101a/0x1560 kernel/bpf/syscall.c:2651
 __sys_bpf+0x5b8/0x780 kernel/bpf/syscall.c:5031
 __do_sys_bpf kernel/bpf/syscall.c:5135 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5133 [inline]
 __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:5133
 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: 0033:0x7f0cfa59c819
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f0cfb53e028 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f0cfa815fa0 RCX: 00007f0cfa59c819
RDX: 0000000000000094 RSI: 00002000000000c0 RDI: 0000000000000005
RBP: 00007f0cfa632c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0cfa816038 R14: 00007f0cfa815fa0 R15: 00007ffe6d989a68
 </TASK>