rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 2643 jiffies s: 9301 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: 6248 Comm: syz.2.485 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 RIP: 0010:__sanitizer_cov_trace_pc+0x58/0x60 kernel/kcov.c:234 Code: f8 15 00 00 83 fa 02 75 21 48 8b 91 00 16 00 00 48 8b 32 48 8d 7e 01 8b 89 fc 15 00 00 48 39 cf 73 08 48 89 3a 48 89 44 f2 08 0f 1f 80 00 00 00 00 48 8b 04 24 65 48 8b 15 c4 9b 81 7e 65 8b RSP: 0018:ffffc90000007478 EFLAGS: 00000046 RAX: ffffffff81a3367f RBX: 1ffff92000000e94 RCX: ffff88801d3a9dc0 RDX: 0000000000000100 RSI: 00000000ffffffe4 RDI: 0000000000000000 RBP: ffffc90000007588 R08: dffffc0000000000 R09: fffffbfff1c3ed96 R10: fffffbfff1c3ed96 R11: 1ffffffff1c3ed95 R12: ffffc90000007680 R13: ffff8880575d4200 R14: 00000000ffffffe4 R15: ffffc900000074c0 FS: 00007fbbdf27c6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c302a4d CR3: 000000007e601000 CR4: 00000000003506f0 DR0: 0000200000000380 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff1 DR7: 0000000000000600 Call Trace: __perf_event_output kernel/events/core.c:7733 [inline] perf_event_output_forward+0x18f/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 0d 93 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:ffffc90000007ac0 EFLAGS: 00000206 RAX: 50de188b1dd7eb00 RBX: 1ffff92000000f60 RCX: 50de188b1dd7eb00 RDX: dffffc0000000000 RSI: ffffffff8a8c0580 RDI: ffffffff8adef3a0 RBP: ffffc90000007bc0 R08: dffffc0000000000 R09: fffffbfff215c449 R10: fffffbfff215c449 R11: 1ffffffff215c448 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_rx_napi+0x219/0x3c0 net/mac80211/rx.c:5330 ieee80211_rx include/net/mac80211.h:4846 [inline] ieee80211_handle_queued_frames+0x105/0x1b0 net/mac80211/main.c:317 tasklet_action_common+0x298/0x400 kernel/softirq.c:826 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 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691 RIP: 0010:unwind_next_frame+0x3f3/0x20b0 arch/x86/kernel/unwind_orc.c:461 Code: 28 84 c0 0f 85 39 17 00 00 41 c6 06 01 49 c7 c4 80 7b 89 8a 49 8d 6c 24 04 4d 8d 7c 24 05 48 89 e8 48 c1 e8 03 48 89 44 24 48 <42> 0f b6 04 28 84 c0 0f 85 72 16 00 00 4c 89 f8 48 c1 e8 03 42 0f RSP: 0018:ffffc90003936f10 EFLAGS: 00000a03 RAX: 1ffffffff1d51549 RBX: ffffc90003936fe8 RCX: ffffffff8e35a080 RDX: ffffffff8ea8aa4a RSI: ffffffff8e35a07c RDI: ffffffff8138655f RBP: ffffffff8ea8aa4e R08: 0000000000000001 R09: 0000000000000008 R10: fffff52000726e09 R11: 1ffff92000726e07 R12: ffffffff8ea8aa4a R13: dffffc0000000000 R14: ffffffff8e35a07c R15: ffffffff8ea8aa4f arch_stack_walk+0x10c/0x140 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x98/0xe0 kernel/stacktrace.c:122 save_stack+0xf3/0x1e0 mm/page_owner.c:127 __set_page_owner+0x19/0x60 mm/page_owner.c:190 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x173/0x1a0 mm/page_alloc.c:2532 prep_new_page mm/page_alloc.c:2539 [inline] get_page_from_freelist+0x1a26/0x1ac0 mm/page_alloc.c:4328 __alloc_pages+0x1df/0x4e0 mm/page_alloc.c:5614 __get_free_pages+0x8/0x30 mm/page_alloc.c:5664 kasan_populate_vmalloc_pte+0x31/0xf0 mm/kasan/shadow.c:271 apply_to_pte_range mm/memory.c:2662 [inline] apply_to_pmd_range mm/memory.c:2706 [inline] apply_to_pud_range mm/memory.c:2742 [inline] apply_to_p4d_range mm/memory.c:2778 [inline] __apply_to_page_range+0x989/0xd10 mm/memory.c:2814 alloc_vmap_area+0x1754/0x1880 mm/vmalloc.c:1654 __get_vm_area_node+0x158/0x330 mm/vmalloc.c:2513 __vmalloc_node_range+0x357/0x1390 mm/vmalloc.c:3203 __vmalloc_node mm/vmalloc.c:3308 [inline] __vmalloc+0x76/0x80 mm/vmalloc.c:3322 pcpu_mem_zalloc mm/percpu.c:516 [inline] pcpu_alloc_chunk mm/percpu.c:1472 [inline] pcpu_create_chunk+0x341/0xbc0 mm/percpu-vm.c:338 pcpu_alloc+0x816/0x1a30 mm/percpu.c:1834 bpf_map_alloc_percpu+0xb5/0x1a0 kernel/bpf/syscall.c:498 prealloc_init+0x22b/0x860 kernel/bpf/hashtab.c:328 htab_map_alloc+0xc7c/0x1110 kernel/bpf/hashtab.c:568 find_and_alloc_map kernel/bpf/syscall.c:133 [inline] map_create+0x534/0x1000 kernel/bpf/syscall.c:1149 __sys_bpf+0x2f3/0x6d0 kernel/bpf/syscall.c:5009 __do_sys_bpf kernel/bpf/syscall.c:5131 [inline] __se_sys_bpf kernel/bpf/syscall.c:5129 [inline] __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:5129 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fbbde38efc9 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:00007fbbdf27c038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007fbbde5e5fa0 RCX: 00007fbbde38efc9 RDX: 0000000000000048 RSI: 0000200000000840 RDI: 0000000000000000 RBP: 00007fbbde411f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fbbde5e6038 R14: 00007fbbde5e5fa0 R15: 00007ffee451afd8