============================================
WARNING: possible recursive locking detected
6.7.0-rc7-syzkaller-00049-g453f5db0619e #0 Not tainted
--------------------------------------------
syz-executor226/5061 is trying to acquire lock:
ffff8880210e00b0 (&tree->tree_lock/1){+.+.}-{3:3}, at: hfsplus_find_init+0x16e/0x200 fs/hfsplus/bfind.c:33

but task is already holding lock:
ffff8880210e00b0 (&tree->tree_lock/1){+.+.}-{3:3}, at: hfsplus_find_init+0x16e/0x200 fs/hfsplus/bfind.c:33

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

5 locks held by syz-executor226/5061:
 #0: ffff888020aca418 (sb_writers#10){.+.+}-{0:0}, at: ksys_write+0x12f/0x250 fs/read_write.c:637
 #1: ffff88807bd21800 (&sb->s_type->i_mutex_key#15){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
 #1: ffff88807bd21800 (&sb->s_type->i_mutex_key#15){+.+.}-{3:3}, at: generic_file_write_iter+0x92/0x350 mm/filemap.c:4045
 #2: ffff88807bd21608 (&hip->extents_lock){+.+.}-{3:3}, at: hfsplus_file_extend+0x1c1/0x1090 fs/hfsplus/extents.c:457
 #3: ffff8880210e00b0 (&tree->tree_lock/1){+.+.}-{3:3}, at: hfsplus_find_init+0x16e/0x200 fs/hfsplus/bfind.c:33
 #4: ffff888020bbf588 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_extend+0x1c1/0x1090 fs/hfsplus/extents.c:457

stack backtrace:
CPU: 0 PID: 5061 Comm: syz-executor226 Not tainted 6.7.0-rc7-syzkaller-00049-g453f5db0619e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
 check_deadlock kernel/locking/lockdep.c:3062 [inline]
 validate_chain kernel/locking/lockdep.c:3856 [inline]
 __lock_acquire+0x20f8/0x3b20 kernel/locking/lockdep.c:5137
 lock_acquire kernel/locking/lockdep.c:5754 [inline]
 lock_acquire+0x1ae/0x520 kernel/locking/lockdep.c:5719
 __mutex_lock_common kernel/locking/mutex.c:603 [inline]
 __mutex_lock+0x175/0x9d0 kernel/locking/mutex.c:747
 hfsplus_find_init+0x16e/0x200 fs/hfsplus/bfind.c:33
 hfsplus_ext_read_extent+0x18f/0x240 fs/hfsplus/extents.c:216
 hfsplus_file_extend+0x695/0x1090 fs/hfsplus/extents.c:461
 hfsplus_bmap_reserve+0x318/0x410 fs/hfsplus/btree.c:358
 __hfsplus_ext_write_extent+0x470/0x5e0 fs/hfsplus/extents.c:104
 __hfsplus_ext_cache_extent+0x98/0x9d0 fs/hfsplus/extents.c:186
 hfsplus_ext_read_extent+0x1fc/0x240 fs/hfsplus/extents.c:218
 hfsplus_file_extend+0x695/0x1090 fs/hfsplus/extents.c:461
 hfsplus_get_block+0x1ae/0x9e0 fs/hfsplus/extents.c:245
 __block_write_begin_int+0x3c0/0x1560 fs/buffer.c:2119
 __block_write_begin fs/buffer.c:2168 [inline]
 block_write_begin+0xb1/0x490 fs/buffer.c:2227
 cont_write_begin+0x530/0x730 fs/buffer.c:2582
 hfsplus_write_begin+0x87/0x140 fs/hfsplus/inode.c:52
 generic_perform_write+0x278/0x600 mm/filemap.c:3927
 __generic_file_write_iter+0x1f9/0x240 mm/filemap.c:4022
 generic_file_write_iter+0xe3/0x350 mm/filemap.c:4048
 call_write_iter include/linux/fs.h:2020 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x64f/0xdf0 fs/read_write.c:584
 ksys_write+0x12f/0x250 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f3b0ee7fa99
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 17 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc00489608 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f3b0ee7fa99
RDX: 00000000fffffff0 RSI: 0000000020004200 RDI: 0000000000000004
RBP: 00007f3b0eef35f0 R08: 0000555556b404c0 R09: 0000555556b404c0
R10: 0000000000000647 R11: 0000000000000246 R12: 00007ffc00489630
R13: 00007ffc00489858 R14: 431bde82d7b634db R15: 00007f3b0eec803b
 </TASK>