loop0: detected capacity change from 0 to 1024
============================================
WARNING: possible recursive locking detected
5.15.123-syzkaller #0 Not tainted
--------------------------------------------
syz-executor302/3498 is trying to acquire lock:
ffff8880161f9548 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_get_block+0x37f/0x14e0 fs/hfsplus/extents.c:260

but task is already holding lock:
ffff8880161f87c8 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_extend+0x1d2/0x1b10 fs/hfsplus/extents.c:457

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

5 locks held by syz-executor302/3498:
 #0: ffff8880796860e0 (&type->s_umount_key#42/1){+.+.}-{3:3}, at: alloc_super+0x210/0x940 fs/super.c:229
 #1: ffff888023c7f198 (&sbi->vh_mutex){+.+.}-{3:3}, at: hfsplus_fill_super+0x1378/0x1c90 fs/hfsplus/super.c:553
 #2: ffff8880796820b0 (&tree->tree_lock){+.+.}-{3:3}, at: hfsplus_find_init+0x146/0x1c0
 #3: ffff8880161f87c8 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_extend+0x1d2/0x1b10 fs/hfsplus/extents.c:457
 #4: ffff888023c7f0f8 (&sbi->alloc_mutex){+.+.}-{3:3}, at: hfsplus_block_allocate+0x8a/0x8d0 fs/hfsplus/bitmap.c:35

stack backtrace:
CPU: 1 PID: 3498 Comm: syz-executor302 Not tainted 5.15.123-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
 print_deadlock_bug kernel/locking/lockdep.c:2946 [inline]
 check_deadlock kernel/locking/lockdep.c:2989 [inline]
 validate_chain+0x46cf/0x58b0 kernel/locking/lockdep.c:3774
 __lock_acquire+0x1295/0x1ff0 kernel/locking/lockdep.c:5011
 lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5622
 __mutex_lock_common+0x1da/0x25a0 kernel/locking/mutex.c:596
 __mutex_lock kernel/locking/mutex.c:729 [inline]
 mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743
 hfsplus_get_block+0x37f/0x14e0 fs/hfsplus/extents.c:260
 block_read_full_page+0x2f9/0xde0 fs/buffer.c:2290
 do_read_cache_page+0x752/0x1040
 read_mapping_page include/linux/pagemap.h:515 [inline]
 hfsplus_block_allocate+0xfa/0x8d0 fs/hfsplus/bitmap.c:37
 hfsplus_file_extend+0xa4c/0x1b10 fs/hfsplus/extents.c:468
 hfsplus_bmap_reserve+0x101/0x4e0 fs/hfsplus/btree.c:357
 hfsplus_create_cat+0x1a9/0x1ba0 fs/hfsplus/catalog.c:272
 hfsplus_fill_super+0x13e6/0x1c90 fs/hfsplus/super.c:560
 mount_bdev+0x2c9/0x3f0 fs/super.c:1378
 legacy_get_tree+0xeb/0x180 fs/fs_context.c:611
 vfs_get_tree+0x88/0x270 fs/super.c:1508
 do_new_mount+0x28b/0xae0 fs/namespace.c:2994
 do_mount fs/namespace.c:3337 [inline]
 __do_sys_mount fs/namespace.c:3545 [inline]
 __se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3522
 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+0x61/0xcb
RIP: 0033:0x7ff21df8ac3a
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 5e 04 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 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:00007ffcf3685958 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffcf3685970 RCX: 00007ff21df8ac3a
RDX: 0000000020000000 RSI: 0000000020000080 RDI: 00007ffcf3685970
RBP: 0000000000000004 R08: 00007ffcf36859b0 R09: 000000000000064e
R10: 0000000000208010 R11: 0000000000000286 R12: 0000000000208010
R13: 00007ffcf36859b0 R14: 0000000000000003 R15: 0000000000080000
 </TASK>