loop0: detected capacity change from 0 to 1024
hfsplus: invalid extended attribute record
============================================
WARNING: possible recursive locking detected
6.1.116-syzkaller #0 Not tainted
--------------------------------------------
syz-executor230/4295 is trying to acquire lock:
ffff0000d9fa9548 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_get_block+0x2c4/0x1168 fs/hfsplus/extents.c:260

but task is already holding lock:
ffff0000d9faa988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_truncate+0x24c/0xa18 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

6 locks held by syz-executor230/4295:
 #0: ffff0000da422460 (sb_writers#8){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:393
 #1: ffff0000d9fa9e00 (&type->i_mutex_dir_key#6/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:793 [inline]
 #1: ffff0000d9fa9e00 (&type->i_mutex_dir_key#6/1){+.+.}-{3:3}, at: do_unlinkat+0x2d0/0x70c fs/namei.c:4373
 #2: ffff0000d9faab80 (&sb->s_type->i_mutex_key#17){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline]
 #2: ffff0000d9faab80 (&sb->s_type->i_mutex_key#17){+.+.}-{3:3}, at: vfs_unlink+0xd8/0x508 fs/namei.c:4311
 #3: ffff0000d6627198 (&sbi->vh_mutex){+.+.}-{3:3}, at: hfsplus_unlink+0x144/0x6a0 fs/hfsplus/dir.c:370
 #4: ffff0000d9faa988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_truncate+0x24c/0xa18 fs/hfsplus/extents.c:577
 #5: ffff0000d66270f8 (&sbi->alloc_mutex){+.+.}-{3:3}, at: hfsplus_block_free+0xcc/0x4b0 fs/hfsplus/bitmap.c:182

stack backtrace:
CPU: 1 PID: 4295 Comm: syz-executor230 Not tainted 6.1.116-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call trace:
 dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106
 dump_stack+0x1c/0x58 lib/dump_stack.c:113
 __lock_acquire+0x6310/0x7680 kernel/locking/lockdep.c:5049
 lock_acquire+0x26c/0x7cc kernel/locking/lockdep.c:5662
 __mutex_lock_common+0x190/0x21a0 kernel/locking/mutex.c:603
 __mutex_lock kernel/locking/mutex.c:747 [inline]
 mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799
 hfsplus_get_block+0x2c4/0x1168 fs/hfsplus/extents.c:260
 block_read_full_folio+0x2f4/0x98c fs/buffer.c:2271
 hfsplus_read_folio+0x28/0x38 fs/hfsplus/inode.c:28
 filemap_read_folio+0x14c/0x39c mm/filemap.c:2489
 do_read_cache_folio+0x24c/0x544 mm/filemap.c:3626
 do_read_cache_page mm/filemap.c:3668 [inline]
 read_cache_page+0x6c/0x180 mm/filemap.c:3677
 read_mapping_page include/linux/pagemap.h:791 [inline]
 hfsplus_block_free+0x11c/0x4b0 fs/hfsplus/bitmap.c:185
 hfsplus_free_extents+0x148/0x8d4 fs/hfsplus/extents.c:363
 hfsplus_file_truncate+0x674/0xa18 fs/hfsplus/extents.c:592
 hfsplus_delete_inode+0x154/0x200
 hfsplus_unlink+0x414/0x6a0 fs/hfsplus/dir.c:405
 vfs_unlink+0x2f0/0x508 fs/namei.c:4322
 do_unlinkat+0x4cc/0x70c fs/namei.c:4390
 __do_sys_unlinkat fs/namei.c:4433 [inline]
 __se_sys_unlinkat fs/namei.c:4426 [inline]
 __arm64_sys_unlinkat+0xcc/0xfc fs/namei.c:4426
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
hfsplus: unable to mark blocks free: error -5
hfsplus: can't free extent