loop0: detected capacity change from 0 to 1024
hfsplus: xattr searching failed
============================================
WARNING: possible recursive locking detected
6.2.0-rc1-syzkaller-00095-ge4cf7c25bae5 #0 Not tainted
--------------------------------------------
syz-executor283/5068 is trying to acquire lock:
ffff88802a0c9548 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_get_block+0x3a3/0x1560 fs/hfsplus/extents.c:260

but task is already holding lock:
ffff88802a0ca988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_truncate+0x280/0xbb0 fs/hfsplus/extents.c:576

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

       CPU0
       ----
  lock(&HFSPLUS_I(inode)->extents_lock);
  lock(&HFSPLUS_I(inode)->extents_lock);

 *** DEADLOCK ***

 May be due to missing lock nesting notation

4 locks held by syz-executor283/5068:
 #0: ffff88802ba46460 (sb_writers#9){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x80 fs/namespace.c:508
 #1: ffff88802a0cab80 (&sb->s_type->i_mutex_key#15){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #1: ffff88802a0cab80 (&sb->s_type->i_mutex_key#15){+.+.}-{3:3}, at: do_truncate+0x1ec/0x2f0 fs/open.c:63
 #2: ffff88802a0ca988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_truncate+0x280/0xbb0 fs/hfsplus/extents.c:576
 #3: ffff8880215fb0f8 (&sbi->alloc_mutex){+.+.}-{3:3}, at: hfsplus_block_free+0xb6/0x4e0 fs/hfsplus/bitmap.c:182

stack backtrace:
CPU: 1 PID: 5068 Comm: syz-executor283 Not tainted 6.2.0-rc1-syzkaller-00095-ge4cf7c25bae5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1b1/0x290 lib/dump_stack.c:106
 print_deadlock_bug kernel/locking/lockdep.c:2990 [inline]
 check_deadlock kernel/locking/lockdep.c:3033 [inline]
 validate_chain+0x4843/0x6ae0 kernel/locking/lockdep.c:3818
 __lock_acquire+0x1292/0x1f60 kernel/locking/lockdep.c:5055
 lock_acquire+0x182/0x3c0 kernel/locking/lockdep.c:5668
 __mutex_lock_common+0x1bd/0x26e0 kernel/locking/mutex.c:603
 __mutex_lock kernel/locking/mutex.c:747 [inline]
 mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:799
 hfsplus_get_block+0x3a3/0x1560 fs/hfsplus/extents.c:260
 block_read_full_folio+0x3b3/0xfa0 fs/buffer.c:2271
 filemap_read_folio+0x187/0x7d0 mm/filemap.c:2426
 do_read_cache_folio+0x2d3/0x790 mm/filemap.c:3553
 do_read_cache_page mm/filemap.c:3595 [inline]
 read_cache_page+0x56/0x270 mm/filemap.c:3604
 read_mapping_page include/linux/pagemap.h:755 [inline]
 hfsplus_block_free+0x123/0x4e0 fs/hfsplus/bitmap.c:185
 hfsplus_free_extents+0x17f/0xad0 fs/hfsplus/extents.c:363
 hfsplus_file_truncate+0x827/0xbb0 fs/hfsplus/extents.c:591
 hfsplus_setattr+0x1b8/0x280 fs/hfsplus/inode.c:269
 notify_change+0xe50/0x1100 fs/attr.c:482
 do_truncate+0x200/0x2f0 fs/open.c:65
 handle_truncate fs/namei.c:3216 [inline]
 do_open fs/namei.c:3561 [inline]
 path_openat+0x272b/0x2dd0 fs/namei.c:3714
 do_filp_open+0x264/0x4f0 fs/namei.c:3741
 do_sys_openat2+0x124/0x4e0 fs/open.c:1310
 do_sys_open fs/open.c:1326 [inline]
 __do_sys_creat fs/open.c:1402 [inline]
 __se_sys_creat fs/open.c:1396 [inline]
 __x64_sys_creat+0x11f/0x160 fs/open.c:1396
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f3b57d92759
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 14 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 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff3f81abd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
RAX: ffffffffffffffda RBX: 0032656c69662f2e RCX: 00007f3b57d92759
RDX: 00007f3b57d50dd3 RSI: 0000000000000020 RDI: 0000000020000180
RBP: 00007f3b57d51ff0 R08: 00000000000005cd R09: 0000000000000000