rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 2642 jiffies s: 144041 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: 28794 Comm: syz.3.6485 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
RIP: 0010:lockdep_hardirqs_off+0x7b/0x100 kernel/locking/lockdep.c:4417
Code: 65 8b 05 98 af d4 75 85 c0 74 56 65 4c 8b 35 5c a8 d4 75 48 c7 c7 a0 10 8c 8a e8 f0 13 00 00 65 c7 05 75 af d4 75 00 00 00 00 <49> 89 9e 88 0a 00 00 41 8b 86 78 0a 00 00 ff c0 41 89 86 78 0a 00
RSP: 0018:ffffc900001e09c8 EFLAGS: 00000086
RAX: 0000000000000001 RBX: ffffffff8a2da39a RCX: db4d0da451d07c00
RDX: 0000000000000000 RSI: ffffffff8a8c10a0 RDI: ffffffff8adf0d20
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: ffff8880549c5940 R15: 0000000000000000
FS:  00007f3cb85876c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fec5dc8eff8 CR3: 00000000279ee000 CR4: 00000000003506e0
DR0: 0000200000000300 DR1: 0000200000000300 DR2: 0000200000000300
DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 irqentry_enter+0x27/0x50 kernel/entry/common.c:-1
 sysvec_irq_work+0xa/0xc0 arch/x86/kernel/irq_work.c:17
 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:ffffc900001e0ac0 EFLAGS: 00000206
RAX: db4d0da451d07c00 RBX: 1ffff9200003c160 RCX: db4d0da451d07c00
RDX: dffffc0000000000 RSI: ffffffff8a8c10a0 RDI: ffffffff8adf0d20
RBP: ffffc900001e0bb0 R08: ffff8880b8f3580b R09: 1ffff110171e6b01
R10: dffffc0000000000 R11: ffffed10171e6b02 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+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:__sanitizer_cov_trace_switch+0x4/0xe0 kernel/kcov.c:332
Code: 77 1e 49 ff c0 4c 89 02 48 c7 44 0a 08 07 00 00 00 48 89 7c 0a 10 48 89 74 0a 18 48 89 44 0a 20 c3 0f 1f 44 00 00 48 8b 4e 08 <48> 83 c1 f8 48 c1 c1 3d 48 83 f9 08 0f 92 c0 b2 8b d2 ea 20 c2 80
RSP: 0018:ffffc9000347f7c0 EFLAGS: 00000293
RAX: 0000000000000002 RBX: 0000000000000001 RCX: 0000000000000010
RDX: ffffffff81d09347 RSI: ffffffff8cc16e30 RDI: 0000000000000001
RBP: ffffffff96c57584 R08: ffff8880549c5940 R09: 0000000000000002
R10: 0000000000000005 R11: 0000000000000000 R12: 1ffffffff2d8aeb0
R13: 0000000000000000 R14: ffffffff96c57580 R15: 0000000000000000
 policy_node mm/mempolicy.c:1867 [inline]
 alloc_pages+0x254/0x740 mm/mempolicy.c:2283
 __get_free_pages+0x8/0x30 mm/page_alloc.c:5707
 kasan_populate_vmalloc_pte+0x31/0xf0 mm/kasan/shadow.c:271
 apply_to_pte_range mm/memory.c:2660 [inline]
 apply_to_pmd_range mm/memory.c:2704 [inline]
 apply_to_pud_range mm/memory.c:2740 [inline]
 apply_to_p4d_range mm/memory.c:2776 [inline]
 __apply_to_page_range+0x989/0xd10 mm/memory.c:2812
 alloc_vmap_area+0x178f/0x18c0 mm/vmalloc.c:1654
 __get_vm_area_node+0x158/0x330 mm/vmalloc.c:2513
 __vmalloc_node_range+0x357/0x13b0 mm/vmalloc.c:3203
 kvmalloc_node+0x13b/0x180 mm/util.c:606
 kvmalloc include/linux/slab.h:716 [inline]
 btf_parse kernel/bpf/btf.c:5010 [inline]
 btf_new_fd+0x277/0x780 kernel/bpf/btf.c:6905
 __sys_bpf+0x612/0x780 kernel/bpf/syscall.c:5076
 __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: 0033:0x7f3cb779c819
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:00007f3cb8587028 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f3cb7a16090 RCX: 00007f3cb779c819
RDX: 0000000000000020 RSI: 0000200000000280 RDI: 0000000000000012
RBP: 00007f3cb7832c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3cb7a16128 R14: 00007f3cb7a16090 R15: 00007ffd5fa41b38
 </TASK>