loop5: detected capacity change from 0 to 1024
============================================
WARNING: possible recursive locking detected
6.1.146-syzkaller #0 Not tainted
--------------------------------------------
syz.5.1481/10756 is trying to acquire lock:
ffff888079843708 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_get_block+0x39b/0x1530 fs/hfsplus/extents.c:260

but task is already holding lock:
ffff888079845208 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_truncate+0x28f/0xb30 fs/hfsplus/extents.c:577

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

9 locks held by syz.5.1481/10756:
 #0: ffff888028dc2460 (sb_writers#20){.+.+}-{0:0}, at: mnt_want_write+0x3d/0x90 fs/namespace.c:393
 #1: ffff888028dc2748 (&type->s_vfs_rename_key#3){+.+.}-{3:3}, at: lock_rename fs/namei.c:3038 [inline]
 #1: ffff888028dc2748 (&type->s_vfs_rename_key#3){+.+.}-{3:3}, at: do_renameat2+0x35b/0xc70 fs/namei.c:4966
 #2: ffff888079843240 (&type->i_mutex_dir_key#10/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:793 [inline]
 #2: ffff888079843240 (&type->i_mutex_dir_key#10/1){+.+.}-{3:3}, at: lock_two_directories fs/namei.c:-1 [inline]
 #2: ffff888079843240 (&type->i_mutex_dir_key#10/1){+.+.}-{3:3}, at: lock_rename fs/namei.c:3039 [inline]
 #2: ffff888079843240 (&type->i_mutex_dir_key#10/1){+.+.}-{3:3}, at: do_renameat2+0x3ed/0xc70 fs/namei.c:4966
 #3: ffff8880798475c0 (&type->i_mutex_dir_key#10/5){+.+.}-{3:3}, at: lock_rename include/linux/fs.h:-1 [inline]
 #3: ffff8880798475c0 (&type->i_mutex_dir_key#10/5){+.+.}-{3:3}, at: do_renameat2+0x423/0xc70 fs/namei.c:4966
 #4: ffff888079843fc0 (&sb->s_type->i_mutex_key#28){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline]
 #4: ffff888079843fc0 (&sb->s_type->i_mutex_key#28){+.+.}-{3:3}, at: lock_two_nondirectories+0xd5/0x150 fs/inode.c:1208
 #5: ffff888079845400 (&sb->s_type->i_mutex_key#28/4){+.+.}-{3:3}, at: vfs_rename+0x7dc/0x10d0 fs/namei.c:4845
 #6: ffff888055ab6998 (&sbi->vh_mutex){+.+.}-{3:3}, at: hfsplus_unlink+0x15a/0x760 fs/hfsplus/dir.c:370
 #7: ffff888079845208 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_truncate+0x28f/0xb30 fs/hfsplus/extents.c:577
 #8: ffff888055ab68f8 (&sbi->alloc_mutex){+.+.}-{3:3}, at: hfsplus_block_free+0xbf/0x4b0 fs/hfsplus/bitmap.c:182

stack backtrace:
CPU: 1 PID: 10756 Comm: syz.5.1481 Not tainted 6.1.146-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x168/0x22e lib/dump_stack.c:106
 __lock_acquire+0x122f/0x7c50 kernel/locking/lockdep.c:-1
 lock_acquire+0x1b4/0x490 kernel/locking/lockdep.c:5662
 __mutex_lock_common kernel/locking/mutex.c:603 [inline]
 __mutex_lock+0x120/0xaf0 kernel/locking/mutex.c:747
 hfsplus_get_block+0x39b/0x1530 fs/hfsplus/extents.c:260
 block_read_full_folio+0x3c9/0xed0 fs/buffer.c:2271
 filemap_read_folio+0x160/0x760 mm/filemap.c:2490
 do_read_cache_folio+0x2a0/0x760 mm/filemap.c:3627
 do_read_cache_page+0x32/0x220 mm/filemap.c:3669
 read_mapping_page include/linux/pagemap.h:791 [inline]
 hfsplus_block_free+0x128/0x4b0 fs/hfsplus/bitmap.c:185
 hfsplus_free_extents+0x176/0xac0 fs/hfsplus/extents.c:363
 hfsplus_file_truncate+0x731/0xb30 fs/hfsplus/extents.c:592
 hfsplus_delete_inode+0x17c/0x230 fs/hfsplus/inode.c:-1
 hfsplus_unlink+0x4c0/0x760 fs/hfsplus/dir.c:405
 hfsplus_rename+0xc7/0x1b0 fs/hfsplus/dir.c:547
 vfs_rename+0xbbf/0x10d0 fs/namei.c:4874
 do_renameat2+0x89d/0xc70 fs/namei.c:5027
 __do_sys_rename fs/namei.c:5073 [inline]
 __se_sys_rename fs/namei.c:5071 [inline]
 __x64_sys_rename+0x82/0x90 fs/namei.c:5071
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f7ce858e9a9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f7ce94ab038 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 00007f7ce87b5fa0 RCX: 00007f7ce858e9a9
RDX: 0000000000000000 RSI: 00002000000001c0 RDI: 0000200000001980
RBP: 00007f7ce8610ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f7ce87b5fa0 R15: 00007ffe63741238
 </TASK>
hfsplus: unable to mark blocks free: error -5
hfsplus: can't free extent