rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P5664/1:b..l
rcu: 	(detected by 0, t=10502 jiffies, g=181077, q=526 ncpus=1)
task:syz-executor    state:R  running task     stack:20184 pid:5664  tgid:5664  ppid:5650   task_flags:0x400140 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5510 [inline]
 __schedule+0x125c/0x6730 kernel/sched/core.c:7234
 preempt_schedule_irq+0x50/0x90 kernel/sched/core.c:7556
 irqentry_exit_to_kernel_mode_preempt include/linux/irq-entry-common.h:468 [inline]
 irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
 irqentry_exit+0x205/0xa00 kernel/entry/common.c:167
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:unwind_next_frame+0x1500/0x2090 arch/x86/kernel/unwind_orc.c:677
Code: ff 48 ba 00 00 00 00 00 fc ff df 48 8d 79 02 48 89 f8 48 c1 e8 03 0f b6 34 10 48 8d 41 03 49 89 c0 49 c1 e8 03 41 0f b6 14 10 <49> 89 f8 41 83 e0 07 44 38 c6 41 0f 9e c0 40 84 f6 40 0f 95 c6 41
RSP: 0018:ffffc9000436f600 EFLAGS: 00000a07
RAX: ffffffff91d3a917 RBX: 0000000000000001 RCX: ffffffff91d3a914
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff91d3a916
RBP: ffffc9000436f6b8 R08: 1ffffffff23a7522 R09: 0000000000000007
R10: 0000000000000200 R11: 0000000000017912 R12: ffffc9000436f6c0
R13: ffffc9000436f670 R14: ffffc9000436f9c0 R15: ffffc9000436f6a4
 arch_stack_walk+0x94/0xf0 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122
 kasan_save_stack+0x30/0x50 mm/kasan/common.c:57
 kasan_save_track+0x14/0x30 mm/kasan/common.c:78
 kasan_save_free_info+0x3b/0x70 mm/kasan/generic.c:584
 poison_slab_object mm/kasan/common.c:253 [inline]
 __kasan_slab_free+0x5f/0x80 mm/kasan/common.c:285
 kasan_slab_free include/linux/kasan.h:235 [inline]
 slab_free_hook mm/slub.c:2677 [inline]
 slab_free mm/slub.c:6377 [inline]
 kfree+0x22b/0x6c0 mm/slub.c:6692
 tomoyo_path_perm+0x29c/0x460 security/tomoyo/file.c:847
 security_inode_getattr+0x116/0x280 security/security.c:1895
 vfs_getattr fs/stat.c:259 [inline]
 vfs_statx_path fs/stat.c:299 [inline]
 vfs_statx+0x11f/0x3f0 fs/stat.c:356
 vfs_fstatat+0x77/0xe0 fs/stat.c:373
 __do_sys_newfstatat+0x9d/0x120 fs/stat.c:538
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x115/0x840 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb2d7d9c71a
RSP: 002b:00007ffe55820d98 EFLAGS: 00000286 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb2d7d9c71a
RDX: 00007ffe55820dc0 RSI: 00007ffe55820e50 RDI: 00000000ffffff9c
RBP: 00007ffe55820e50 R08: 00007ffe55821e50 R09: 00000000ffffffff
R10: 0000000000000100 R11: 0000000000000286 R12: 00007ffe55821ee0
R13: 00007fb2d7e34474 R14: 00000000000a8dcc R15: 00007ffe55821f20
 </TASK>