rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 2666 jiffies s: 223365 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: 2409 Comm: syz.1.7954 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x4/0x60 kernel/kcov.c:215 Code: 00 00 00 00 00 90 53 48 89 fb e8 17 00 00 00 48 8b 3d 80 96 9e 0c 48 89 de 5b e9 f7 65 4f 00 00 00 cc cc 00 00 cc 48 8b 04 24 <65> 48 8b 0d d4 98 81 7e 65 8b 15 d5 98 81 7e 81 e2 00 01 ff 00 74 RSP: 0018:ffffc900000070c0 EFLAGS: 00000082 RAX: ffffffff818d5826 RBX: 00007f9fa478f749 RCX: 0000000000000100 RDX: 0000000000000100 RSI: ffffffff8adef740 RDI: 00007f9fa478f749 RBP: 0000000000000001 R08: 0000000000000004 R09: ffffc90000007210 R10: fffff52000000e44 R11: 1ffff92000000e42 R12: ffffc900000071c0 R13: ffffffff8a4000cc R14: 00007f9fa478f749 R15: 1ffff92000000e41 FS: 00007f9fa55ea6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000020000004f000 CR3: 0000000049252000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: is_bpf_text_address+0x16/0x2a0 kernel/bpf/core.c:732 kernel_text_address+0x9c/0xd0 kernel/extable.c:125 __kernel_text_address+0x9/0x30 kernel/extable.c:79 unwind_get_return_address+0x49/0x80 arch/x86/kernel/unwind_orc.c:323 perf_callchain_kernel+0x35d/0x5c0 arch/x86/events/core.c:2806 get_perf_callchain+0x376/0x480 kernel/events/callchain.c:200 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_disable include/trace/events/preemptirq.h:36 [inline] trace_hardirqs_off_finish+0x13f/0x180 kernel/trace/trace_preemptirq.c:67 irqentry_enter+0x33/0x50 kernel/entry/common.c:382 sysvec_apic_timer_interrupt+0xa/0xc0 arch/x86/kernel/apic/apic.c:1118 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691 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 ed 90 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: a35748a801f9de00 RBX: 1ffff92000000f60 RCX: a35748a801f9de00 RDX: dffffc0000000000 RSI: ffffffff8a8c0580 RDI: ffffffff8adef760 RBP: ffffc90000007bc0 R08: dffffc0000000000 R09: fffffbfff1c3ed56 R10: fffffbfff1c3ed56 R11: 1ffffffff1c3ed55 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_irq_work arch/x86/kernel/irq_work.c:17 [inline] sysvec_irq_work+0x9d/0xc0 arch/x86/kernel/irq_work.c:17 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:728 RIP: 0010:on_stack arch/x86/include/asm/stacktrace.h:-1 [inline] RIP: 0010:stack_access_ok arch/x86/kernel/unwind_orc.c:347 [inline] RIP: 0010:deref_stack_reg arch/x86/kernel/unwind_orc.c:357 [inline] RIP: 0010:unwind_next_frame+0x9a5/0x20b0 arch/x86/kernel/unwind_orc.c:539 Code: 8a 4c 89 74 24 70 4c 89 64 24 20 4c 8d 73 08 4d 89 f4 49 c1 ec 03 43 80 3c 2c 00 74 08 4c 89 f7 e8 10 97 98 00 4c 89 74 24 60 <4c> 89 7c 24 40 48 89 6c 24 30 4c 8b 73 08 4c 8d 7b 10 4d 89 fd 49 RSP: 0018:ffffc90003bd7770 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffffc90003bd7848 RCX: ffffffff8e314c98 RDX: ffffc90003bd7980 RSI: ffffffff8e314c90 RDI: ffffffff8138655f RBP: ffffffff8ea22e7e R08: 000000000000000c R09: 0000000000000000 R10: fffff5200077af15 R11: 1ffff9200077af13 R12: 1ffff9200077af0a R13: dffffc0000000000 R14: ffffc90003bd7850 R15: 1ffffffff1d445cf arch_stack_walk+0x10c/0x140 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x98/0xe0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:52 ____kasan_kmalloc mm/kasan/common.c:374 [inline] __kasan_kmalloc+0x8e/0xa0 mm/kasan/common.c:383 kmalloc include/linux/slab.h:563 [inline] kzalloc include/linux/slab.h:699 [inline] bpf_raw_tp_link_attach+0x171/0x550 kernel/bpf/syscall.c:3379 bpf_raw_tracepoint_open+0x194/0x200 kernel/bpf/syscall.c:3421 __sys_bpf+0x4e9/0x6d0 kernel/bpf/syscall.c:5069 __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: 0033:0x7f9fa478f749 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:00007f9fa55ea038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f9fa49e5fa0 RCX: 00007f9fa478f749 RDX: 0000000000000010 RSI: 0000200000000000 RDI: 0000000000000011 RBP: 00007f9fa4813f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f9fa49e6038 R14: 00007f9fa49e5fa0 R15: 00007ffc37729d98