capability: warning: `syz.0.0' uses 32-bit capabilities (legacy support in use)
hfsplus: invalid extended attribute record
============================================
WARNING: possible recursive locking detected
6.16.0-rc2-syzkaller-00269-g11313e2f7812 #0 Not tainted
--------------------------------------------
syz.0.0/5323 is trying to acquire lock:
ffff888052f59548 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_get_block+0x39e/0x1530 fs/hfsplus/extents.c:260

but task is already holding lock:
ffff888052f5b048 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_truncate+0x294/0xb40 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.0.0/5323:
 #0: ffff8880118b6428 (sb_writers#12){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:557
 #1: ffff888052f59df8 (&type->i_mutex_dir_key#8/1){+.+.}-{4:4}, at: inode_lock_nested include/linux/fs.h:914 [inline]
 #1: ffff888052f59df8 (&type->i_mutex_dir_key#8/1){+.+.}-{4:4}, at: do_unlinkat+0x1bf/0x560 fs/namei.c:4646
 #2: ffff888052f5b238 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:869 [inline]
 #2: ffff888052f5b238 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: vfs_unlink+0xf2/0x650 fs/namei.c:4584
 #3: ffff888052f4a198 (&sbi->vh_mutex){+.+.}-{4:4}, at: hfsplus_unlink+0x160/0x730 fs/hfsplus/dir.c:370
 #4: ffff888052f5b048 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_truncate+0x294/0xb40 fs/hfsplus/extents.c:577
 #5: ffff888052f4a0f8 (&sbi->alloc_mutex){+.+.}-{4:4}, at: hfsplus_block_free+0xbe/0x550 fs/hfsplus/bitmap.c:182

stack backtrace:
CPU: 0 UID: 0 PID: 5323 Comm: syz.0.0 Not tainted 6.16.0-rc2-syzkaller-00269-g11313e2f7812 #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 print_deadlock_bug+0x28b/0x2a0 kernel/locking/lockdep.c:3044
 check_deadlock kernel/locking/lockdep.c:3096 [inline]
 validate_chain+0x1a3f/0x2140 kernel/locking/lockdep.c:3898
 __lock_acquire+0xab9/0xd20 kernel/locking/lockdep.c:5240
 lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5871
 __mutex_lock_common kernel/locking/mutex.c:602 [inline]
 __mutex_lock+0x182/0xe80 kernel/locking/mutex.c:747
 hfsplus_get_block+0x39e/0x1530 fs/hfsplus/extents.c:260
 block_read_full_folio+0x29c/0x830 fs/buffer.c:2427
 filemap_read_folio+0x117/0x380 mm/filemap.c:2412
 do_read_cache_folio+0x350/0x590 mm/filemap.c:3894
 do_read_cache_page mm/filemap.c:3960 [inline]
 read_cache_page+0x5d/0x170 mm/filemap.c:3969
 read_mapping_page include/linux/pagemap.h:966 [inline]
 hfsplus_block_free+0x121/0x550 fs/hfsplus/bitmap.c:185
 hfsplus_free_extents+0x176/0xae0 fs/hfsplus/extents.c:363
 hfsplus_file_truncate+0x736/0xb40 fs/hfsplus/extents.c:592
 hfsplus_delete_inode+0x180/0x230 fs/hfsplus/inode.c:-1
 hfsplus_unlink+0x4e3/0x730 fs/hfsplus/dir.c:405
 vfs_unlink+0x391/0x650 fs/namei.c:4595
 do_unlinkat+0x350/0x560 fs/namei.c:4659
 __do_sys_unlinkat fs/namei.c:4700 [inline]
 __se_sys_unlinkat fs/namei.c:4693 [inline]
 __x64_sys_unlinkat+0xd3/0xf0 fs/namei.c:4693
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f66d2b8e929
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:00007f66d39e2038 EFLAGS: 00000246 ORIG_RAX: 0000000000000107
RAX: ffffffffffffffda RBX: 00007f66d2db6080 RCX: 00007f66d2b8e929
RDX: 0000000000000000 RSI: 00002000000001c0 RDI: ffffffffffffff9c
RBP: 00007f66d2c10b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f66d2db6080 R15: 00007fffc011ca48
 </TASK>
hfsplus: unable to mark blocks free: error -5
hfsplus: can't free extent