============================================
WARNING: possible recursive locking detected
6.1.100-syzkaller #0 Not tainted
--------------------------------------------
syz.4.249/5126 is trying to acquire lock:
ffff0000f43ec0b0 (&tree->tree_lock/1){+.+.}-{3:3}, at: hfs_find_init+0x148/0x1c8

but task is already holding lock:
ffff0000f43ec0b0 (&tree->tree_lock/1){+.+.}-{3:3}, at: hfs_find_init+0x148/0x1c8

other info that might help us debug this:
 Possible unsafe locking scenario:

       CPU0
       ----
  lock(&tree->tree_lock/1);
  lock(&tree->tree_lock/1);

 *** DEADLOCK ***

 May be due to missing lock nesting notation

4 locks held by syz.4.249/5126:
 #0: ffff0000df3c8fa8 (&sb->s_type->i_mutex_key#24){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline]
 #0: ffff0000df3c8fa8 (&sb->s_type->i_mutex_key#24){+.+.}-{3:3}, at: hfs_file_release+0xcc/0x12c fs/hfs/inode.c:586
 #1: ffff0000df3c8df8 (&HFS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfs_file_truncate+0x43c/0xeb0 fs/hfs/extent.c:511
 #2: ffff0000f43ec0b0 (&tree->tree_lock/1){+.+.}-{3:3}, at: hfs_find_init+0x148/0x1c8
 #3: ffff0000d2cf3b78 (&HFS_I(tree->inode)->extents_lock){+.+.}-{3:3}, at: hfs_extend_file+0xe4/0x1130 fs/hfs/extent.c:397

stack backtrace:
CPU: 0 PID: 5126 Comm: syz.4.249 Not tainted 6.1.100-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Call trace:
 dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106
 dump_stack+0x1c/0x5c lib/dump_stack.c:113
 __lock_acquire+0x6310/0x7680 kernel/locking/lockdep.c:5049
 lock_acquire+0x26c/0x7cc kernel/locking/lockdep.c:5662
 __mutex_lock_common+0x190/0x21a0 kernel/locking/mutex.c:603
 __mutex_lock kernel/locking/mutex.c:747 [inline]
 mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799
 hfs_find_init+0x148/0x1c8
 hfs_ext_read_extent fs/hfs/extent.c:200 [inline]
 hfs_extend_file+0x270/0x1130 fs/hfs/extent.c:401
 hfs_bmap_reserve+0xd0/0x3b4 fs/hfs/btree.c:234
 __hfs_ext_write_extent+0x1a0/0x468 fs/hfs/extent.c:121
 __hfs_ext_cache_extent+0x84/0x754 fs/hfs/extent.c:174
 hfs_file_truncate+0x538/0xeb0 fs/hfs/extent.c:526
 hfs_file_release+0xd4/0x12c fs/hfs/inode.c:587
 __fput+0x1c8/0x7c8 fs/file_table.c:320
 ____fput+0x20/0x30 fs/file_table.c:348
 task_work_run+0x240/0x2f0 kernel/task_work.c:179
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 do_notify_resume+0x2148/0x3474 arch/arm64/kernel/signal.c:1132
 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline]
 el0_svc+0x9c/0x168 arch/arm64/kernel/entry-common.c:638
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585