rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 2661 jiffies s: 6513 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: 6429 Comm: syz.3.791 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:27 [inline]
RIP: 0010:ct_nmi_enter+0x5f/0x170 kernel/context_tracking.c:-1
Code: 01 d3 75 48 85 c0 0f 88 e0 00 00 00 e8 4a 08 00 00 89 c3 83 f8 08 0f 83 eb 00 00 00 48 8b 04 dd 80 f9 65 8c 8b 88 08 58 03 00 <65> 8b 05 a2 18 d2 75 f7 c1 04 00 00 00 75 30 bf 04 00 00 00 e8 f8
RSP: 0018:ffffc90000007900 EFLAGS: 00000093
RAX: ffff8880b8e00000 RBX: 0000000000000000 RCX: 0000000000030f1c
RDX: 0000000000000100 RSI: ffffffff8adf42c0 RDI: ffffffff8adf4280
RBP: ffffc900000079c8 R08: ffffffff8e2121af R09: 1ffffffff1c42435
R10: dffffc0000000000 R11: fffffbfff1c42436 R12: dffffc0000000000
R13: 0000000000000000 R14: ffff8880b8e35800 R15: 0000000000000000
FS:  00007f4c1020c6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c2eb548 CR3: 0000000018ed5000 CR4: 00000000003506f0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 ct_irq_enter_irqson+0xaf/0x170 kernel/context_tracking.c:407
 trace_irq_enable_rcuidle+0x9f/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 52 82 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:ffffc90000007ac0 EFLAGS: 00000206
RAX: c96f01c3269f1e00 RBX: 1ffff92000000f60 RCX: c96f01c3269f1e00
RDX: dffffc0000000000 RSI: ffffffff8a8c17a0 RDI: ffffffff8adf42e0
RBP: ffffc90000007bc0 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_rx_napi+0x23d/0x3c0 net/mac80211/rx.c:5339
 ieee80211_rx include/net/mac80211.h:4849 [inline]
 ieee80211_handle_queued_frames+0x104/0x1a0 net/mac80211/main.c:317
 tasklet_action_common+0x2d0/0x460 kernel/softirq.c:827
 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:schedule_debug kernel/sched/core.c:5803 [inline]
RIP: 0010:__schedule+0x13f/0x4030 kernel/sched/core.c:6455
Code: 74 08 48 89 df e8 41 9f 9a f7 48 8b 1b 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 28 9f 9a f7 48 81 3b 9d 6e ac 57 <0f> 85 ec 11 00 00 83 7c 24 40 00 75 44 49 8d 5c 24 18 48 89 d8 48
RSP: 0018:ffffc9000c4578a0 EFLAGS: 00000246
RAX: 1ffff9200188a000 RBX: ffffc9000c450000 RCX: 0000000000000000
RDX: 0000000000000010 RSI: 0000000000000000 RDI: ffffc9000c4579d0
RBP: ffffc9000c457a30 R08: ffffc9000c4579cf R09: ffffc9000c4579c0
R10: dffffc0000000000 R11: fffff5200188af3a R12: ffff888053ec3c00
R13: dffffc0000000000 R14: ffffc9000c4579c0 R15: ffff8880b8e00000
 preempt_schedule_irq+0xbb/0x160 kernel/sched/core.c:6874
 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:check_kcov_mode kernel/kcov.c:184 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x2c/0x60 kernel/kcov.c:216
Code: 04 24 65 48 8b 0d 94 4d 80 7e 65 8b 15 95 4d 80 7e 81 e2 00 01 ff 00 74 11 81 fa 00 01 00 00 75 35 83 b9 1c 16 00 00 00 74 2c <8b> 91 f8 15 00 00 83 fa 02 75 21 48 8b 91 00 16 00 00 48 8b 32 48
RSP: 0018:ffffc9000c457ba8 EFLAGS: 00000246
RAX: ffffffff83d2a395 RBX: dffffc0000000000 RCX: ffff888053ec3c00
RDX: 0000000000000000 RSI: 00000000000013ea RDI: ffff888027967e07
RBP: ffff888026bf0710 R08: ffff888053ec3c00 R09: 0000000000000002
R10: 000000000000005c R11: 0000000000000002 R12: 0000000000000007
R13: 0000000000000000 R14: ffff888026bf0780 R15: 0000000000000002
 tomoyo_check_acl+0x1c5/0x3f0 security/tomoyo/domain.c:171
 tomoyo_path_number_perm+0x379/0x650 security/tomoyo/file.c:733
 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: 0033:0x7f4c0f39de59
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:00007f4c1020c028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f4c0f625fa0 RCX: 00007f4c0f39de59
RDX: 0000200000000080 RSI: 0000000000008912 RDI: 0000000000000006
RBP: 00007f4c0f433e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4c0f626038 R14: 00007f4c0f625fa0 R15: 00007ffcb3f35fd8
 </TASK>