rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 2655 jiffies s: 483709 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: 2932 Comm: syz.2.7792 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 RIP: 0010:check_preemption_disabled+0x37/0x110 lib/smp_processor_id.c:55 Code: 04 25 28 00 00 00 48 89 44 24 08 65 8b 05 d1 32 ea 75 65 8b 0d 72 88 ea 75 f7 c1 ff ff ff 7f 74 1f 65 48 8b 0c 25 28 00 00 00 <48> 3b 4c 24 08 0f 85 c4 00 00 00 48 83 c4 10 5b 41 5e 41 5f 5d c3 RSP: 0018:ffffc900001e06f8 EFLAGS: 00000002 RAX: 0000000000000001 RBX: ffff88802e55dd78 RCX: b7cb9657d2a35300 RDX: 0000000000000100 RSI: ffffffff8adef740 RDI: ffffffff8adef700 RBP: 1ffff11005cabbaf R08: ffffffff8f9f7048 R09: ffffffff8f9f7058 R10: ffffffff8f9f7050 R11: ffffffff8f9f7043 R12: 0000000000000000 R13: dffffc0000000000 R14: ffff88802e55dd68 R15: ffff88802e55d940 FS: 00007f976940b6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b3051dff8 CR3: 0000000058f27000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: migrate_enable+0xf5/0x220 kernel/sched/core.c:2256 bpf_prog_run_array include/linux/bpf.h:1672 [inline] trace_call_bpf+0x492/0x680 kernel/trace/bpf_trace.c:135 perf_trace_run_bpf_submit+0x79/0x1c0 kernel/events/core.c:9997 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 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:ffffc900001e0aa0 EFLAGS: 00000206 RAX: b7cb9657d2a35300 RBX: 1ffff9200003c15c RCX: b7cb9657d2a35300 RDX: dffffc0000000000 RSI: ffffffff8a8c0580 RDI: ffffffff8adef760 RBP: ffffc900001e0b90 R08: dffffc0000000000 R09: ffffed10171e6afa R10: ffffed10171e6afa R11: 1ffff110171e6af9 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+0x554/0xd60 kernel/time/hrtimer.c:1811 hrtimer_run_softirq+0x183/0x2a0 kernel/time/hrtimer.c:1828 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:format_decode+0x108e/0x1330 lib/vsprintf.c:2572 Code: 4c 24 08 80 e1 07 38 c1 0f 8c ae f2 ff ff be 08 00 00 00 48 8b 7c 24 08 e8 ef 08 c8 f7 e9 9a f2 ff ff 44 89 e1 80 e1 07 38 c1 <0f> 8c b1 f2 ff ff 4c 89 e7 e8 e4 07 c8 f7 e9 a4 f2 ff ff 48 8b 0c RSP: 0018:ffffc90003797910 EFLAGS: 00000293 RAX: 0000000000000006 RBX: dffffc0000000000 RCX: 000000008a9a4304 RDX: ffffffff8a08eec8 RSI: ffffffff8e0888c0 RDI: 0000000000000073 RBP: 0000001000000000 R08: ffff88802e55d940 R09: 0000000000000005 R10: 0000000000000030 R11: 0000000000000002 R12: ffffffff8a9a434c R13: 1ffffffff1534869 R14: ffffffff8a9a434c R15: 0000000000000000 vsnprintf+0xef/0x1a00 lib/vsprintf.c:2757 dynamic_dname+0xf8/0x1b0 fs/d_path.c:307 tomoyo_realpath_from_path+0x166/0x5d0 security/tomoyo/realpath.c:258 tomoyo_get_realpath security/tomoyo/file.c:151 [inline] tomoyo_path_number_perm+0x1e3/0x600 security/tomoyo/file.c:723 security_file_ioctl+0x6c/0xa0 security/security.c:1568 __do_sys_ioctl fs/ioctl.c:864 [inline] __se_sys_ioctl+0x48/0x170 fs/ioctl.c:856 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: 0033:0x7f976858f749 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:00007f976940b038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f97687e5fa0 RCX: 00007f976858f749 RDX: 0000000000000000 RSI: 0000000040082406 RDI: 0000000000000009 RBP: 00007f9768613f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f97687e6038 R14: 00007f97687e5fa0 R15: 00007fff34e4d768