rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-...D } 2643 jiffies s: 83517 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: 4494 Comm: udevd Not tainted 6.5.0-rc7-next-20230825-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
RIP: 0010:lock_acquire+0x218/0x510 kernel/locking/lockdep.c:5757
Code: df 48 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24 a8 00 00 00 65 48 2b 04 25 28 00 00 00 0f 85 a2 02 00 00 <48> 81 c4 b0 00 00 00 5b 5d 41 5c 41 5d 41 5e 41 5f c3 65 8b 05 7f
RSP: 0018:ffffc90000007c20 EFLAGS: 00000046
RAX: 0000000000000000 RBX: fffff52000000f86 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8ae92820 RDI: ffffffff8c5cea40
RBP: 0000000000000000 R08: 0000000000000000 R09: fffffbfff1d9c252
R10: ffffffff8ece1297 R11: 000000475bd1e963 R12: 0000000000000001
R13: 0000000000000001 R14: ffffffff8d5780c0 R15: 0000000000000000
FS:  00007f23c2d60c80(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c00c82b000 CR3: 000000001d2bd000 CR4: 00000000003506f0
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 debug_objects_fill_pool lib/debugobjects.c:614 [inline]
 debug_object_activate+0x144/0x490 lib/debugobjects.c:713
 debug_hrtimer_activate kernel/time/hrtimer.c:422 [inline]
 debug_activate kernel/time/hrtimer.c:477 [inline]
 enqueue_hrtimer+0x23/0x310 kernel/time/hrtimer.c:1087
 __run_hrtimer kernel/time/hrtimer.c:1705 [inline]
 __hrtimer_run_queues+0xa0a/0xc10 kernel/time/hrtimer.c:1752
 hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1814
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1063 [inline]
 __sysvec_apic_timer_interrupt+0x105/0x3f0 arch/x86/kernel/apic/apic.c:1080
 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1074
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:finish_task_switch.isra.0+0x220/0xc90 kernel/sched/core.c:5254
Code: 0a 00 00 44 8b 0d 00 2a 73 0d 45 85 c9 0f 85 c0 01 00 00 48 89 df e8 ff f8 ff ff e8 8a 5f 33 00 fb 65 48 8b 1c 25 c0 bc 03 00 <48> 8d bb e0 15 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1
RSP: 0018:ffffc900031b70a8 EFLAGS: 00000246
RAX: 0000000000000003 RBX: ffff88807eaabb80 RCX: 1ffffffff1d9c902
RDX: 0000000000000000 RSI: ffffffff8ae92820 RDI: ffffffff815b1e26
RBP: ffffc900031b70f0 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff8ece1297 R11: 0000000000000000 R12: ffff8880b983d458
R13: ffff8880271d9dc0 R14: 0000000000000000 R15: ffff8880b983c700
 context_switch kernel/sched/core.c:5385 [inline]
 __schedule+0xee9/0x59f0 kernel/sched/core.c:6695
 preempt_schedule_common+0x45/0xc0 kernel/sched/core.c:6864
 preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:45
 unwind_next_frame+0x1c80/0x2390 arch/x86/kernel/unwind_orc.c:672
 arch_stack_walk+0xfa/0x170 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x96/0xd0 kernel/stacktrace.c:122
 kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
 kasan_set_track+0x25/0x30 mm/kasan/common.c:52
 ____kasan_kmalloc mm/kasan/common.c:374 [inline]
 __kasan_kmalloc+0xa2/0xb0 mm/kasan/common.c:383
 kasan_kmalloc include/linux/kasan.h:198 [inline]
 __do_kmalloc_node mm/slab_common.c:1023 [inline]
 __kmalloc+0x60/0x100 mm/slab_common.c:1036
 kmalloc include/linux/slab.h:603 [inline]
 kzalloc include/linux/slab.h:720 [inline]
 tomoyo_encode2+0x100/0x3d0 security/tomoyo/realpath.c:45
 tomoyo_encode+0x29/0x50 security/tomoyo/realpath.c:80
 tomoyo_realpath_from_path+0x196/0x710 security/tomoyo/realpath.c:283
 tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
 tomoyo_check_open_permission+0x2aa/0x3b0 security/tomoyo/file.c:771
 tomoyo_file_open security/tomoyo/tomoyo.c:332 [inline]
 tomoyo_file_open+0xa8/0xd0 security/tomoyo/tomoyo.c:327
 security_file_open+0x6a/0xe0 security/security.c:2836
 do_dentry_open+0x538/0x1730 fs/open.c:916
 do_open fs/namei.c:3639 [inline]
 path_openat+0x19af/0x29c0 fs/namei.c:3796
 do_filp_open+0x1de/0x430 fs/namei.c:3823
 do_sys_openat2+0x176/0x1e0 fs/open.c:1422
 do_sys_open fs/open.c:1437 [inline]
 __do_sys_openat fs/open.c:1453 [inline]
 __se_sys_openat fs/open.c:1448 [inline]
 __x64_sys_openat+0x175/0x210 fs/open.c:1448
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f23c29169a4
Code: 24 20 48 8d 44 24 30 48 89 44 24 28 64 8b 04 25 18 00 00 00 85 c0 75 2c 44 89 e2 48 89 ee bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 76 60 48 8b 15 55 a4 0d 00 f7 d8 64 89 02 48 83
RSP: 002b:00007ffca58e1520 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 000055e2bfb8c040 RCX: 00007f23c29169a4
RDX: 0000000000080141 RSI: 000055e2bfb6f0d8 RDI: 00000000ffffff9c
RBP: 000055e2bfb6f0d8 R08: 00000000ffffffff R09: 0000000000000000
R10: 00000000000001a4 R11: 0000000000000246 R12: 0000000000080141
R13: ffffffffffffffff R14: 00000000ffffffff R15: 00000000ffffffff
 </TASK>