rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P6536/2:b..l
rcu: 	(detected by 0, t=10503 jiffies, g=12485, q=1044483 ncpus=2)
task:syz.2.173       state:R  running task     stack:26024 pid:6536  tgid:6534  ppid:5817   task_flags:0x40054c flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5396 [inline]
 __schedule+0x16a2/0x4cb0 kernel/sched/core.c:6785
 preempt_schedule_irq+0xb5/0x150 kernel/sched/core.c:7108
 irqentry_exit+0x6f/0x90 kernel/entry/common.c:307
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_release+0x2b5/0x3e0 kernel/locking/lockdep.c:5896
Code: 51 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f7 44 24 20 00 02 00 00 75 56 f7 c3 00 02 00 00 74 01 fb 65 48 8b 05 9b 8b fb 10 <48> 3b 44 24 28 0f 85 8b 00 00 00 48 83 c4 30 5b 41 5c 41 5d 41 5e
RSP: 0018:ffffc9001ba770c8 EFLAGS: 00000206
RAX: f4634339b90ab400 RBX: 0000000000000202 RCX: f4634339b90ab400
RDX: 0000000000000001 RSI: ffffffff8db5a983 RDI: ffffffff8be1b980
RBP: ffff88802e824718 R08: ffffea0001b8e2f7 R09: 1ffffd4000371c5e
R10: dffffc0000000000 R11: fffff94000371c5f R12: 0000000000000001
R13: 0000000000000001 R14: ffffffff8e13ee20 R15: ffff88802e823c00
 rcu_lock_release include/linux/rcupdate.h:341 [inline]
 rcu_read_unlock include/linux/rcupdate.h:871 [inline]
 page_ref_add_unless include/linux/page_ref.h:239 [inline]
 folio_ref_add_unless include/linux/page_ref.h:248 [inline]
 folio_try_get+0x1d1/0x340 include/linux/page_ref.h:264
 find_get_entry mm/filemap.c:2050 [inline]
 find_lock_entries+0x24f/0xa60 mm/filemap.c:2140
 shmem_undo_range+0x254/0x14b0 mm/shmem.c:1107
 shmem_truncate_range mm/shmem.c:1237 [inline]
 shmem_evict_inode+0x272/0xa70 mm/shmem.c:1365
 evict+0x501/0x9c0 fs/inode.c:810
 __dentry_kill+0x209/0x660 fs/dcache.c:669
 dput+0x19f/0x2b0 fs/dcache.c:911
 __fput+0x68e/0xa70 fs/file_table.c:473
 task_work_run+0x1d4/0x260 kernel/task_work.c:227
 exit_task_work include/linux/task_work.h:40 [inline]
 do_exit+0x6b5/0x22e0 kernel/exit.c:964
 do_group_exit+0x21c/0x2d0 kernel/exit.c:1105
 get_signal+0x125e/0x1310 kernel/signal.c:3034
 arch_do_signal_or_restart+0x9a/0x750 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop+0x75/0x110 kernel/entry/common.c:111
 exit_to_user_mode_prepare include/linux/entry-common.h:330 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:414 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:449 [inline]
 do_syscall_64+0x2bd/0x3b0 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fdefb98e929
RSP: 002b:00007fdefc7be038 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: 000000000000000b RBX: 00007fdefbbb5fa0 RCX: 00007fdefb98e929
RDX: 0400000000000041 RSI: 0000200000000000 RDI: 0000000000000005
RBP: 00007fdefba10b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fdefbbb5fa0 R15: 00007ffc2b172e88
 </TASK>