rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 2635 jiffies s: 13505 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: 7109 Comm: syz.3.863 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:perf_trace_run_bpf_submit+0x0/0x1c0 kernel/events/core.c:10024
Code: 48 89 de e8 d2 2e 98 02 e9 15 ff ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 42 ff ff ff 48 89 df e8 d5 08 2e 00 e9 35 ff ff ff <55> 41 57 41 56 41 55 41 54 53 48 83 ec 10 4d 89 ce 4c 89 44 24 08
RSP: 0018:ffffc90000007908 EFLAGS: 00000046
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffffffff8cb803a0
RDX: 0000000000000001 RSI: 0000000000000014 RDI: ffffe8ffffcc8000
RBP: ffffc900000079e8 R08: 0000000000000001 R09: ffff8880b8e35558
R10: dffffc0000000000 R11: ffffed10171c6b02 R12: 0000000009400e86
R13: ffffe8ffffcc800c R14: ffffe8ffffcc8000 R15: 1ffff92000000f28
FS:  00007fd00d32e6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3011eff8 CR3: 0000000078852000 CR4: 00000000003506f0
DR0: 0000000000000002 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 perf_trace_preemptirq_template+0x268/0x320 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+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 a2 7c 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:ffffc90000007ae0 EFLAGS: 00000206
RAX: 4667c66b9cf24a00 RBX: 1ffff92000000f64 RCX: 4667c66b9cf24a00
RDX: dffffc0000000000 RSI: ffffffff8a8c17a0 RDI: ffffffff8adf5de0
RBP: ffffc90000007bd0 R08: ffff8880b8e3580b R09: 1ffff110171c6b01
R10: dffffc0000000000 R11: ffffed10171c6b02 R12: 0000000000000246
R13: dffffc0000000000 R14: ffff8880b8e3bb00 R15: 0000000000000001
 __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:1751 [inline]
 __hrtimer_run_queues+0x522/0xc90 kernel/time/hrtimer.c:1815
 hrtimer_run_softirq+0x173/0x290 kernel/time/hrtimer.c:1832
 handle_softirqs+0x291/0x910 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:preempt_schedule_irq+0xb6/0x160 kernel/sched/core.c:6875
Code: 00 00 43 c6 44 37 04 f8 74 0b 0f 0b 48 f7 03 08 00 00 00 74 7f bf 01 00 00 00 e8 a5 01 20 f7 e8 90 d8 4f f7 fb bf 01 00 00 00 <e8> 25 ba ff ff 43 c6 44 37 08 00 48 c7 44 24 40 00 00 00 00 9c 8f
RSP: 0018:ffffc9000bea7980 EFLAGS: 00000282
RAX: 4667c66b9cf24a00 RBX: 0000000000000000 RCX: 4667c66b9cf24a00
RDX: dffffc0000000000 RSI: ffffffff8a8c17a0 RDI: 0000000000000001
RBP: ffffc9000bea7a20 R08: ffff8880b8e3580b R09: 1ffff110171c6b01
R10: dffffc0000000000 R11: ffffed10171c6b02 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff920017d4f30
 irqentry_exit+0x63/0x70 kernel/entry/common.c:439
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:freelist_dereference mm/slub.c:374 [inline]
RIP: 0010:get_freepointer mm/slub.c:381 [inline]
RIP: 0010:slab_free_freelist_hook+0xaa/0x1b0 mm/slub.c:1752
Code: 49 89 f7 48 c7 06 00 00 00 00 48 c7 02 00 00 00 00 eb 11 48 8b 04 24 ff 08 48 3b 6c 24 10 0f 84 d5 00 00 00 4c 89 f5 8b 43 28 <4d> 8b 34 06 0f 1f 44 00 00 45 31 e4 8b 73 1c 48 89 ef e8 af a9 91
RSP: 0018:ffffc9000bea7ae0 EFLAGS: 00000202
RAX: 0000000000000800 RBX: ffff888017442140 RCX: fffffffe19198001
RDX: ffffc9000bea7b40 RSI: ffffc9000bea7b48 RDI: ffff888017442140
RBP: ffff888054d98000 R08: 0000000000000080 R09: ffff88823b400000
R10: 00000000141c429c R11: 00000000a9932ebf R12: ffffea0001536600
R13: ffffc9000bea7b40 R14: ffff888054d98000 R15: ffffc9000bea7b48
 slab_free mm/slub.c:3687 [inline]
 __kmem_cache_free+0xb6/0x200 mm/slub.c:3700
 tomoyo_realpath_from_path+0x583/0x5c0 security/tomoyo/realpath.c:286
 tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
 tomoyo_path_number_perm+0x22f/0x650 security/tomoyo/file.c:723
 security_file_ioctl+0x6c/0xa0 security/security.c:1569
 __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:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fd00c39e0d9
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:00007fd00d32e028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fd00c625fa0 RCX: 00007fd00c39e0d9
RDX: 0000000000000003 RSI: 0000000040042408 RDI: 0000000000000004
RBP: 00007fd00c435024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd00c626038 R14: 00007fd00c625fa0 R15: 00007ffcb2eda8a8
 </TASK>