rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P31808/1:b..l
rcu: 	(detected by 1, t=10502 jiffies, g=294649, q=957146 ncpus=2)
task:syz-executor    state:R  running task     stack:28152 pid:31808 tgid:31808 ppid:25846  task_flags:0x400040 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5388 [inline]
 __schedule+0x1821/0x5740 kernel/sched/core.c:7189
 preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7513
 irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
 irqentry_exit+0x14f/0x8b0 kernel/entry/common.c:164
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:__page_table_check_zero+0x2fd/0x3e0 mm/page_table_check.c:139
Code: ff e9 00 ff ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 2b ff ff ff 48 89 df e8 2f 7f f4 ff e9 1e ff ff ff e8 25 27 89 ff eb 11 <e8> 1e 27 89 ff eb 05 e8 17 27 89 ff 4c 8b 64 24 08 e8 0d ea 6a 09
RSP: 0018:ffffc90003d977a8 EFLAGS: 00000246
RAX: ffffffff823c8f23 RBX: 0000000000000004 RCX: ffff8880206c3e00
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000004
RBP: dffffc0000000000 R08: ffff88801fa5b1ff R09: 1ffff11003f4b63f
R10: dffffc0000000000 R11: ffffed1003f4b640 R12: 0000000000000004
R13: 000000000009f89d R14: dffffc0000000000 R15: ffff88801fa5b200
 page_table_check_free include/linux/page_table_check.h:46 [inline]
 __free_pages_prepare mm/page_alloc.c:1398 [inline]
 __free_frozen_pages+0xc2c/0xd30 mm/page_alloc.c:2938
 __slab_free+0x274/0x2c0 mm/slub.c:5613
 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:4570 [inline]
 slab_alloc_node mm/slub.c:4899 [inline]
 __do_kmalloc_node mm/slub.c:5295 [inline]
 __kmalloc_noprof+0x316/0x760 mm/slub.c:5308
 kmalloc_noprof include/linux/slab.h:954 [inline]
 tomoyo_realpath_from_path+0xe3/0x5d0 security/tomoyo/realpath.c:251
 tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
 tomoyo_path_perm+0x283/0x560 security/tomoyo/file.c:827
 tomoyo_path_symlink+0xab/0xf0 security/tomoyo/tomoyo.c:212
 security_path_symlink+0x16f/0x360 security/security.c:1502
 filename_symlinkat+0x134/0x410 fs/namei.c:5676
 __do_sys_symlinkat fs/namei.c:5698 [inline]
 __se_sys_symlinkat+0x4e/0x2b0 fs/namei.c:5693
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fbb12b9bf17
RSP: 002b:00007fbb12f3fda8 EFLAGS: 00000202 ORIG_RAX: 000000000000010a
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fbb12b9bf17
RDX: 00007fbb12c33d28 RSI: 00000000ffffff9c RDI: 00007fbb12f3fe40
RBP: 00007fbb12f3fdec R08: 0000000000000001 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000123
R13: 0000555556659a00 R14: 00000000001859f7 R15: 00007fbb12f3fe40
 </TASK>