rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 0-....: (1 GPs behind) idle=f33/1/0x4000000000000002 softirq=18077/18078 fqs=5242 (detected by 1, t=10502 jiffies, g=25101, q=1023) Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 8245 Comm: syz.1.975 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x7e/0x80 kernel/kcov.c:295 Code: 8d 50 28 4d 39 ca 77 22 89 ff 89 f6 4a c7 44 02 08 05 00 00 00 4a 89 7c 02 10 4a 89 74 02 18 4a 89 44 02 20 48 ff c1 48 89 0a 90 48 8b 04 24 65 48 8b 0d c4 9f 8a 7e 65 8b 15 c5 9f 8a 7e 81 RSP: 0018:ffffc900000072f0 EFLAGS: 00000046 RAX: ffffffff81010d21 RBX: ffff8880b90351c8 RCX: ffff888028cf5940 RDX: 0000000000000100 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 0000000000000001 R08: dffffc0000000000 R09: ffffc90000007460 R10: fffff52000000e93 R11: 1ffff92000000e8c R12: dffffc0000000000 R13: ffffc900000074c6 R14: ffffffff8bf23a40 R15: dffffc0000000000 FS: 00007fe8d7b6d6c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe8d7b4cd58 CR3: 000000004506b000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff1 DR7: 0000000000000600 Call Trace: perf_get_guest_cbs include/linux/perf_event.h:1274 [inline] perf_misc_flags+0x61/0x1b0 arch/x86/events/core.c:2961 perf_prepare_sample+0x132/0x1cb0 kernel/events/core.c:7622 __perf_event_output kernel/events/core.c:7802 [inline] perf_event_output_forward+0x146/0x280 kernel/events/core.c:7822 __perf_event_overflow+0x364/0x530 kernel/events/core.c:9515 perf_swevent_overflow kernel/events/core.c:9591 [inline] perf_swevent_event+0x4ad/0x530 kernel/events/core.c:9629 perf_tp_event+0x32c/0xb50 kernel/events/core.c:10047 perf_trace_run_bpf_submit+0xf3/0x1c0 kernel/events/core.c:10021 perf_trace_preemptirq_template+0x2be/0x380 include/trace/events/preemptirq.h:14 trace_irq_enable_rcuidle+0x108/0x180 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+0x84/0x480 kernel/rcu/tree_plugin.h:674 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 ed 11 9e 7e 41 f7 c6 00 00 f0 00 74 45 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b RSP: 0018:ffffc90000007ae0 EFLAGS: 00000206 RAX: 90283183e71d4200 RBX: 1ffff92000000f60 RCX: 90283183e71d4200 RDX: dffffc0000000000 RSI: ffffffff8a0b1be0 RDI: ffffffff8a59e800 RBP: ffffc90000007bb8 R08: dffffc0000000000 R09: ffffed1017207662 R10: ffffed1017207662 R11: 1ffff11017207661 R12: ffffffff8c120c00 R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422 rcu_read_unlock include/linux/rcupdate.h:772 [inline] ieee80211_iterate_active_interfaces_atomic+0x132/0x140 net/mac80211/util.c:831 mac80211_hwsim_beacon+0x9b/0x180 drivers/net/wireless/mac80211_hwsim.c:1865 __run_hrtimer kernel/time/hrtimer.c:1685 [inline] __hrtimer_run_queues+0x53d/0xc40 kernel/time/hrtimer.c:1749 hrtimer_run_softirq+0x176/0x240 kernel/time/hrtimer.c:1766 handle_softirqs+0x328/0x820 kernel/softirq.c:576 __do_softirq kernel/softirq.c:610 [inline] invoke_softirq kernel/softirq.c:450 [inline] __irq_exit_rcu+0x12f/0x220 kernel/softirq.c:659 irq_exit_rcu+0x5/0x20 kernel/softirq.c:671 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:finish_lock_switch+0x134/0x280 kernel/sched/core.c:4804 Code: be ff ff ff ff e8 ec 75 4e 08 85 c0 74 4a 4d 85 ff 75 66 0f 1f 44 00 00 48 89 df e8 96 da 57 08 e8 11 76 2a 00 fb 48 83 c4 08 <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 48 89 df e8 d9 0f fe ff 43 80 3c RSP: 0018:ffffc9000337f408 EFLAGS: 00000282 RAX: 90283183e71d4200 RBX: ffff8880b903a340 RCX: 90283183e71d4200 RDX: dffffc0000000000 RSI: ffffffff8a0b1be0 RDI: ffffffff8a59e800 RBP: 1ffff11017207613 R08: dffffc0000000000 R09: ffffed1017207662 R10: ffffed1017207662 R11: 1ffff11017207661 R12: 1ffff110172075c1 R13: dffffc0000000000 R14: ffff8880b903ae08 R15: 0000000000000000 finish_task_switch+0x12f/0x640 kernel/sched/core.c:4921 context_switch kernel/sched/core.c:5052 [inline] __schedule+0x11c3/0x4390 kernel/sched/core.c:6395 preempt_schedule_irq+0xb1/0x150 kernel/sched/core.c:6799 irqentry_exit+0x63/0x70 kernel/entry/common.c:432 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676 RIP: 0010:apply_to_pmd_range mm/memory.c:2608 [inline] RIP: 0010:apply_to_pud_range mm/memory.c:2653 [inline] RIP: 0010:apply_to_p4d_range mm/memory.c:2689 [inline] RIP: 0010:__apply_to_page_range+0x57b/0xd10 mm/memory.c:2725 Code: e0 ff 48 81 c5 00 00 20 00 4c 39 e3 49 0f 43 ed 4c 89 f1 48 c1 e9 03 48 b8 00 00 00 00 00 fc ff df 48 89 4c 24 50 80 3c 01 00 <74> 08 4c 89 f7 e8 7b 2c 10 00 4d 8b 26 4c 89 e3 48 83 e3 9f 31 ff RSP: 0018:ffffc9000337f7f8 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: fffff520001fffff RCX: 1ffff11002d38800 RDX: 0000000000000002 RSI: fffff520001affff RDI: fffff520001fffff RBP: fffff520001b0000 R08: 0000000000000000 R09: 0000000000000001 R10: fffffbfff183b4c9 R11: 1ffffffff183b4c8 R12: fffff520001affff R13: fffff520001b0000 R14: ffff8880169c4000 R15: fffff520001af000 alloc_vmap_area+0x19f7/0x1b20 mm/vmalloc.c:1572 __get_vm_area_node+0x14f/0x2d0 mm/vmalloc.c:2430 __vmalloc_node_range+0xef/0x8b0 mm/vmalloc.c:3027 __vmalloc_node mm/vmalloc.c:3087 [inline] __vmalloc+0x76/0x80 mm/vmalloc.c:3101 bpf_prog_alloc_no_stats+0x36/0x2c0 kernel/bpf/core.c:90 bpf_prog_alloc+0x1a/0x1e0 kernel/bpf/core.c:124 bpf_prog_load+0x7b3/0x1550 kernel/bpf/syscall.c:2301 __sys_bpf+0x4c2/0x670 kernel/bpf/syscall.c:4657 __do_sys_bpf kernel/bpf/syscall.c:4761 [inline] __se_sys_bpf kernel/bpf/syscall.c:4759 [inline] __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:4759 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7fe8d9906749 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:00007fe8d7b6d038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007fe8d9b5cfa0 RCX: 00007fe8d9906749 RDX: 0000000000000048 RSI: 0000200000000200 RDI: 0000000000000005 RBP: 00007fe8d998af91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fe8d9b5d038 R14: 00007fe8d9b5cfa0 R15: 00007ffea81d5b78