loop1: detected capacity change from 0 to 1024
============================================
WARNING: possible recursive locking detected
6.9.0-syzkaller-10323-g8f6a15f095a6 #0 Not tainted
--------------------------------------------
syz-executor.1/5943 is trying to acquire lock:
ffff88802e6600b0 (&tree->tree_lock#2/1){+.+.}-{3:3}, at: hfsplus_find_init+0x16e/0x200 fs/hfsplus/bfind.c:33

but task is already holding lock:
ffff88802e6600b0 (&tree->tree_lock#2/1){+.+.}-{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#2/1);
  lock(&tree->tree_lock#2/1);

 *** DEADLOCK ***

 May be due to missing lock nesting notation

5 locks held by syz-executor.1/5943:
 #0: ffff88805b448420 (sb_writers#17){.+.+}-{0:0}, at: do_sys_ftruncate fs/open.c:199 [inline]
 #0: ffff88805b448420 (sb_writers#17){.+.+}-{0:0}, at: __do_sys_ftruncate fs/open.c:207 [inline]
 #0: ffff88805b448420 (sb_writers#17){.+.+}-{0:0}, at: __se_sys_ftruncate fs/open.c:205 [inline]
 #0: ffff88805b448420 (sb_writers#17){.+.+}-{0:0}, at: __x64_sys_ftruncate+0xa9/0x110 fs/open.c:205
 #1: ffff88802cd9b240 (&sb->s_type->i_mutex_key#26){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:791 [inline]
 #1: ffff88802cd9b240 (&sb->s_type->i_mutex_key#26){+.+.}-{3:3}, at: do_truncate+0x14b/0x220 fs/open.c:63
 #2: ffff88802cd9b048 (&hip->extents_lock){+.+.}-{3:3}, at: hfsplus_file_truncate+0x204/0x9e0 fs/hfsplus/extents.c:576
 #3: ffff88802e6600b0 (&tree->tree_lock#2/1){+.+.}-{3:3}, at: hfsplus_find_init+0x16e/0x200 fs/hfsplus/bfind.c:33
 #4: ffff88802cd98108 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_extend+0x1c1/0x1090 fs/hfsplus/extents.c:457

stack backtrace:
CPU: 1 PID: 5943 Comm: syz-executor.1 Not tainted 6.9.0-syzkaller-10323-g8f6a15f095a6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114
 check_deadlock kernel/locking/lockdep.c:3062 [inline]
 validate_chain kernel/locking/lockdep.c:3856 [inline]
 __lock_acquire+0x20e6/0x3b30 kernel/locking/lockdep.c:5137
 lock_acquire kernel/locking/lockdep.c:5754 [inline]
 lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5719
 __mutex_lock_common kernel/locking/mutex.c:608 [inline]
 __mutex_lock+0x175/0x9c0 kernel/locking/mutex.c:752
 hfsplus_find_init+0x16e/0x200 fs/hfsplus/bfind.c:33
 hfsplus_ext_read_extent+0x18f/0x250 fs/hfsplus/extents.c:216
 hfsplus_file_extend+0x699/0x1090 fs/hfsplus/extents.c:461
 hfsplus_bmap_reserve+0x31c/0x410 fs/hfsplus/btree.c:358
 __hfsplus_ext_write_extent+0x474/0x5e0 fs/hfsplus/extents.c:104
 __hfsplus_ext_cache_extent+0x98/0x9d0 fs/hfsplus/extents.c:186
 hfsplus_file_truncate+0x34d/0x9e0 fs/hfsplus/extents.c:598
 hfsplus_setattr+0x1eb/0x310 fs/hfsplus/inode.c:265
 notify_change+0x742/0x11f0 fs/attr.c:497
 do_truncate+0x15c/0x220 fs/open.c:65
 do_ftruncate+0x5e5/0x720 fs/open.c:181
 do_sys_ftruncate fs/open.c:199 [inline]
 __do_sys_ftruncate fs/open.c:207 [inline]
 __se_sys_ftruncate fs/open.c:205 [inline]
 __x64_sys_ftruncate+0xa9/0x110 fs/open.c:205
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcf/0x260 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7f3e07cee9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f7f3edb60c8 EFLAGS: 00000246 ORIG_RAX: 000000000000004d
RAX: ffffffffffffffda RBX: 00007f7f3e1abf80 RCX: 00007f7f3e07cee9
RDX: 0000000000000000 RSI: 000000000000c17a RDI: 0000000000000009
RBP: 00007f7f3e0c949e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f7f3e1abf80 R15: 00007ffc4586a3e8
 </TASK>