rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P5822/1:b..l
rcu: 	(detected by 1, t=10503 jiffies, g=40845, q=1313 ncpus=2)
task:syz-executor    state:R  running task     stack:24008 pid:5822  tgid:5822  ppid:5819   task_flags:0x400140 flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0x116f/0x5de0 kernel/sched/core.c:6767
 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7090
 irqentry_exit+0x36/0x90 kernel/entry/common.c:354
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:rcu_read_unlock include/linux/rcupdate.h:873 [inline]
RIP: 0010:class_rcu_destructor include/linux/rcupdate.h:1155 [inline]
RIP: 0010:unwind_next_frame+0x3f9/0x20a0 arch/x86/kernel/unwind_orc.c:479
Code: 41 c7 45 00 00 00 00 00 31 ed e8 92 e9 07 0a 85 c0 0f 85 a7 06 00 00 48 c7 c7 80 15 3c 8e 48 8d 35 00 00 00 00 e8 67 3b 2e 00 <e8> 82 db 37 00 e9 3d fc ff ff 49 81 ff 00 a0 ff 91 72 0d 49 81 ff
RSP: 0018:ffffc90003ebf5f0 EFLAGS: 00000296
RAX: 0000000000000000 RBX: ffffc90003ebff28 RCX: ffffc90003ebf5b4
RDX: 0000000000000002 RSI: ffffffff8dbc85ff RDI: ffffffff8bf46060
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000002 R11: 00000000000133a3 R12: ffffc90003ebf6b0
R13: ffffc90003ebf660 R14: ffffc90003ebff28 R15: ffffc90003ebf694
 arch_stack_walk+0x94/0x100 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122
 save_stack+0x160/0x1f0 mm/page_owner.c:156
 __reset_page_owner+0x84/0x1a0 mm/page_owner.c:308
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1262 [inline]
 __free_frozen_pages+0x69d/0xff0 mm/page_alloc.c:2680
 discard_slab mm/slub.c:2720 [inline]
 __put_partials+0x16d/0x1c0 mm/slub.c:3189
 qlink_free mm/kasan/quarantine.c:163 [inline]
 qlist_free_all+0x4e/0x120 mm/kasan/quarantine.c:179
 kasan_quarantine_reduce+0x195/0x1e0 mm/kasan/quarantine.c:286
 __kasan_slab_alloc+0x69/0x90 mm/kasan/common.c:329
 kasan_slab_alloc include/linux/kasan.h:250 [inline]
 slab_post_alloc_hook mm/slub.c:4151 [inline]
 slab_alloc_node mm/slub.c:4200 [inline]
 __do_kmalloc_node mm/slub.c:4330 [inline]
 __kmalloc_noprof+0x1d4/0x510 mm/slub.c:4343
 kmalloc_noprof include/linux/slab.h:909 [inline]
 tomoyo_realpath_from_path+0xc2/0x6e0 security/tomoyo/realpath.c:251
 tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
 tomoyo_path_perm+0x274/0x460 security/tomoyo/file.c:822
 security_inode_getattr+0x116/0x290 security/security.c:2377
 vfs_getattr fs/stat.c:243 [inline]
 vfs_fstat+0x4b/0xd0 fs/stat.c:265
 vfs_fstatat+0xbc/0xf0 fs/stat.c:366
 __do_sys_newfstatat+0xa1/0x130 fs/stat.c:532
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f39ff58b97a
RSP: 002b:00007ffdcb320048 EFLAGS: 00000206 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f39ff58b97a
RDX: 00007ffdcb320050 RSI: 00007f39ff64a6c2 RDI: 0000000000000003
RBP: 00007ffdcb320050 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000001000 R11: 0000000000000206 R12: 00007ffdcb321250
R13: 00007f39ff60e08c R14: 000000000007be0c R15: 00007ffdcb321290
 </TASK>