rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 2639 jiffies s: 3973 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: 4459 Comm: udevd Not tainted 6.4.0-rc4-syzkaller-00190-gc308e9ec0047 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
RIP: 0010:check_kcov_mode kernel/kcov.c:173 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0xb/0x70 kernel/kcov.c:207
Code: 0f 1e fa 48 8b be a8 01 00 00 e8 b0 ff ff ff 31 c0 c3 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 f3 0f 1e fa 65 8b 05 7d 75 7f 7e <89> c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b 14 25 c0 bb 03 00 a9
RSP: 0018:ffffc900001e0618 EFLAGS: 00000246
RAX: 0000000000000301 RBX: ffff888048016080 RCX: 0000000000000100
RDX: ffff88807d320000 RSI: ffffffff883f0199 RDI: ffff88806ed91ae8
RBP: ffff88806ed91800 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000005 R12: dffffc0000000000
R13: ffff88806ed91ae0 R14: ffff88806ed91af0 R15: ffff88806ed91ae0
FS:  00007f108048fc80(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f58487ccff8 CR3: 000000002a19a000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 list_add_tail include/linux/list.h:102 [inline]
 list_move_tail include/linux/list.h:230 [inline]
 fq_pie_qdisc_dequeue+0x6dd/0x9c0 net/sched/sch_fq_pie.c:248
 dequeue_skb net/sched/sch_generic.c:292 [inline]
 qdisc_restart net/sched/sch_generic.c:397 [inline]
 __qdisc_run+0x1b2/0x1780 net/sched/sch_generic.c:415
 __dev_xmit_skb net/core/dev.c:3868 [inline]
 __dev_queue_xmit+0x2215/0x3b10 net/core/dev.c:4210
 dev_queue_xmit include/linux/netdevice.h:3085 [inline]
 neigh_connected_output+0x3c2/0x550 net/core/neighbour.c:1581
 neigh_output include/net/neighbour.h:544 [inline]
 ip6_finish_output2+0x55a/0x1560 net/ipv6/ip6_output.c:134
 __ip6_finish_output net/ipv6/ip6_output.c:195 [inline]
 ip6_finish_output+0x69a/0x1170 net/ipv6/ip6_output.c:206
 NF_HOOK_COND include/linux/netfilter.h:292 [inline]
 ip6_output+0x1f1/0x540 net/ipv6/ip6_output.c:227
 dst_output include/net/dst.h:458 [inline]
 NF_HOOK include/linux/netfilter.h:303 [inline]
 ndisc_send_skb+0xa63/0x1850 net/ipv6/ndisc.c:508
 ndisc_send_rs+0x132/0x6f0 net/ipv6/ndisc.c:718
 addrconf_rs_timer+0x3f1/0x870 net/ipv6/addrconf.c:3936
 call_timer_fn+0x1a0/0x580 kernel/time/timer.c:1700
 expire_timers+0x29b/0x4b0 kernel/time/timer.c:1751
 __run_timers kernel/time/timer.c:2022 [inline]
 __run_timers kernel/time/timer.c:1995 [inline]
 run_timer_softirq+0x326/0x910 kernel/time/timer.c:2035
 __do_softirq+0x1d4/0x905 kernel/softirq.c:571
 invoke_softirq kernel/softirq.c:445 [inline]
 __irq_exit_rcu+0x114/0x190 kernel/softirq.c:650
 irq_exit_rcu+0x9/0x20 kernel/softirq.c:662
 sysvec_apic_timer_interrupt+0x97/0xc0 arch/x86/kernel/apic/apic.c:1106
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:lock_acquire+0x1f5/0x520 kernel/locking/lockdep.c:5673
Code: 97 9c 7e 83 f8 01 0f 85 b9 02 00 00 9c 58 f6 c4 02 0f 85 a4 02 00 00 48 83 7c 24 08 00 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24
RSP: 0018:ffffc900030ef290 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff9200061de54 RCX: e72d0294631d8198
RDX: 1ffff1100fa64158 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff91528d07
R10: fffffbfff22a51a0 R11: 0000000000094001 R12: 0000000000000002
R13: 0000000000000000 R14: ffffffff8c7990c0 R15: 0000000000000000
 rcu_lock_acquire include/linux/rcupdate.h:327 [inline]
 rcu_read_lock include/linux/rcupdate.h:773 [inline]
 is_bpf_text_address+0x3a/0x1b0 kernel/bpf/core.c:719
 kernel_text_address kernel/extable.c:125 [inline]
 kernel_text_address+0x3d/0x80 kernel/extable.c:94
 __kernel_text_address+0xd/0x30 kernel/extable.c:79
 unwind_get_return_address arch/x86/kernel/unwind_orc.c:341 [inline]
 unwind_get_return_address+0x55/0xa0 arch/x86/kernel/unwind_orc.c:336
 arch_stack_walk+0x97/0xf0 arch/x86/kernel/stacktrace.c:26
 stack_trace_save+0x90/0xc0 kernel/stacktrace.c:122
 kasan_save_stack+0x22/0x40 mm/kasan/common.c:45
 kasan_set_track+0x25/0x30 mm/kasan/common.c:52
 kasan_save_free_info+0x2e/0x40 mm/kasan/generic.c:521
 ____kasan_slab_free mm/kasan/common.c:236 [inline]
 ____kasan_slab_free+0x160/0x1c0 mm/kasan/common.c:200
 kasan_slab_free include/linux/kasan.h:162 [inline]
 slab_free_hook mm/slub.c:1781 [inline]
 slab_free_freelist_hook+0x8b/0x1c0 mm/slub.c:1807
 slab_free mm/slub.c:3786 [inline]
 __kmem_cache_free+0xaf/0x2d0 mm/slub.c:3799
 tomoyo_check_open_permission+0x187/0x3a0 security/tomoyo/file.c:786
 tomoyo_file_open security/tomoyo/tomoyo.c:332 [inline]
 tomoyo_file_open+0xa1/0xc0 security/tomoyo/tomoyo.c:327
 security_file_open+0x49/0xb0 security/security.c:2797
 do_dentry_open+0x575/0x13f0 fs/open.c:907
 do_open fs/namei.c:3636 [inline]
 path_openat+0x1baa/0x2750 fs/namei.c:3791
 do_filp_open+0x1ba/0x410 fs/namei.c:3818
 do_sys_openat2+0x16d/0x4c0 fs/open.c:1356
 do_sys_open fs/open.c:1372 [inline]
 __do_sys_openat fs/open.c:1388 [inline]
 __se_sys_openat fs/open.c:1383 [inline]
 __x64_sys_openat+0x143/0x1f0 fs/open.c:1383
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f108055e477
Code: 10 00 00 00 44 8b 54 24 e0 48 89 44 24 c0 48 8d 44 24 d0 48 89 44 24 c8 44 89 c2 4c 89 ce bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 76 10 48 8b 15 82 69 0d 00 f7 d8 64 89 02 48 83
RSP: 002b:00007ffe45a29238 EFLAGS: 00000287 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000563ac0901550 RCX: 00007f108055e477
RDX: 0000000000090800 RSI: 0000563ac08e7560 RDI: 00000000ffffff9c
RBP: 0000563ac096a5d0 R08: 0000000000090800 R09: 0000563ac08e7560
R10: 0000000000000000 R11: 0000000000000287 R12: 0000563ac08e7560
R13: 00000000000000ff R14: 0000563ac04ef1c4 R15: 0000000000000000
 </TASK>