rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P15861/1:b..l
rcu: 	(detected by 0, t=10503 jiffies, g=80009, q=1684869 ncpus=2)
task:syz-executor    state:R  running task     stack:22016 pid:15861 tgid:15861 ppid:15858  task_flags:0x400140 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5510 [inline]
 __schedule+0x17d4/0x5630 kernel/sched/core.c:7239
 preempt_schedule_irq+0x4b/0x90 kernel/sched/core.c:7561
 irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
 irqentry_exit+0x14f/0x910 kernel/entry/common.c:167
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:231 [inline]
RIP: 0010:unwind_next_frame+0x24b/0x2550 arch/x86/kernel/unwind_orc.c:510
Code: 66 1d 00 00 45 8b 04 24 41 ff c0 4a 8d 04 6d 00 00 00 00 4c 01 e8 48 8d 34 45 74 ab e6 90 4b 8d 04 40 48 8d 04 45 74 ab e6 90 <48> 3d 04 5c 9f 91 0f 97 c0 48 81 fe 04 5c 9f 91 0f 83 0e 04 00 00
RSP: 0018:ffffc90003f77460 EFLAGS: 00000212
RAX: ffffffff90fecde8 RBX: dffffc0000000000 RCX: 8000000000000000
RDX: 00000000000adcb9 RSI: ffffffff90fecde2 RDI: ffffffff8c4cd720
RBP: ffffffff82403a30 R08: 00000000000405be R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff8eb5a1e0 R12: ffffffff91a45cf0
R13: 00000000000405bd R14: ffffc90003f77508 R15: 000000000001403a
 arch_stack_walk+0x11b/0x150 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122
 save_stack+0x122/0x230 mm/page_owner.c:165
 __reset_page_owner+0x71/0x1f0 mm/page_owner.c:320
 reset_page_owner include/linux/page_owner.h:25 [inline]
 __free_pages_prepare mm/page_alloc.c:1406 [inline]
 __free_frozen_pages+0xc22/0xd20 mm/page_alloc.c:2950
 __slab_free+0x274/0x2c0 mm/slub.c:5741
 qlink_free mm/kasan/quarantine.c:163 [inline]
 qlist_free_all+0x99/0x100 mm/kasan/quarantine.c:179
 kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
 __kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:350
 kasan_slab_alloc include/linux/kasan.h:253 [inline]
 slab_post_alloc_hook mm/slub.c:4584 [inline]
 slab_alloc_node mm/slub.c:4917 [inline]
 __do_kmalloc_node mm/slub.c:5333 [inline]
 __kmalloc_noprof+0x315/0x720 mm/slub.c:5359
 _kmalloc_noprof include/linux/slab.h:992 [inline]
 _kzalloc_noprof include/linux/slab.h:1309 [inline]
 tomoyo_encode2 security/tomoyo/realpath.c:45 [inline]
 tomoyo_encode+0x2ad/0x570 security/tomoyo/realpath.c:80
 tomoyo_realpath_from_path+0x5fa/0x640 security/tomoyo/realpath.c:283
 tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
 tomoyo_path_perm+0x283/0x560 security/tomoyo/file.c:827
 security_inode_getattr+0x12b/0x310 security/security.c:1895
 vfs_getattr fs/stat.c:259 [inline]
 vfs_fstat fs/stat.c:281 [inline]
 __do_sys_newfstat fs/stat.c:551 [inline]
 __se_sys_newfstat fs/stat.c:546 [inline]
 __x64_sys_newfstat+0x133/0x270 fs/stat.c:546
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd050d9c6e7
RSP: 002b:00007ffdd2ba2f88 EFLAGS: 00000206 ORIG_RAX: 0000000000000005
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fd050d9c6e7
RDX: 0000000000000000 RSI: 00007ffdd2ba2f90 RDI: 0000000000000003
RBP: 00007ffdd2ba308c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000062
R13: 0000000000000000 R14: 000000000005c4c3 R15: 00007ffdd2ba30e0
 </TASK>