============================================
WARNING: possible recursive locking detected
syzkaller #0 Not tainted
--------------------------------------------
syz-executor/15711 is trying to acquire lock:
ffff888032074b48 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_get_block+0x398/0x15d0 fs/hfsplus/extents.c:260

but task is already holding lock:
ffff8880320707c8 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_truncate+0x2a4/0xc70 fs/hfsplus/extents.c:573

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-executor/15711:
 #0: ffff888031234420 (sb_writers#23){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:508
 #1: ffff8880320738f8 (&type->i_mutex_dir_key#16/1){+.+.}-{4:4}, at: inode_lock_nested include/linux/fs.h:1025 [inline]
 #1: ffff8880320738f8 (&type->i_mutex_dir_key#16/1){+.+.}-{4:4}, at: do_unlinkat+0x1c7/0x560 fs/namei.c:4724
 #2: ffff8880320709b8 (&sb->s_type->i_mutex_key#30){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline]
 #2: ffff8880320709b8 (&sb->s_type->i_mutex_key#30){+.+.}-{4:4}, at: vfs_unlink+0xf2/0x650 fs/namei.c:4662
 #3: ffff888050a30198 (&sbi->vh_mutex){+.+.}-{4:4}, at: hfsplus_unlink+0x160/0x730 fs/hfsplus/dir.c:370
 #4: ffff8880320707c8 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_truncate+0x2a4/0xc70 fs/hfsplus/extents.c:573
 #5: ffff888050a300f8 (&sbi->alloc_mutex){+.+.}-{4:4}, at: hfsplus_block_free+0xc7/0x5f0 fs/hfsplus/bitmap.c:182

stack backtrace:
CPU: 1 UID: 0 PID: 15711 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 print_deadlock_bug+0x28b/0x2a0 kernel/locking/lockdep.c:3041
 check_deadlock kernel/locking/lockdep.c:3093 [inline]
 validate_chain+0x1a3f/0x2140 kernel/locking/lockdep.c:3895
 __lock_acquire+0xab9/0xd20 kernel/locking/lockdep.c:5237
 lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868
 __mutex_lock_common kernel/locking/mutex.c:598 [inline]
 __mutex_lock+0x187/0x1350 kernel/locking/mutex.c:760
 hfsplus_get_block+0x398/0x15d0 fs/hfsplus/extents.c:260
 block_read_full_folio+0x29f/0x830 fs/buffer.c:2420
 filemap_read_folio+0x117/0x380 mm/filemap.c:2450
 do_read_cache_folio+0x358/0x590 mm/filemap.c:4037
 do_read_cache_page mm/filemap.c:4103 [inline]
 read_cache_page+0x5d/0x170 mm/filemap.c:4112
 read_mapping_page include/linux/pagemap.h:1001 [inline]
 hfsplus_block_free+0x134/0x5f0 fs/hfsplus/bitmap.c:185
 hfsplus_free_extents+0x121/0xa50 fs/hfsplus/extents.c:360
 hfsplus_file_truncate+0x754/0xc70 fs/hfsplus/extents.c:588
 hfsplus_delete_inode+0x180/0x230 fs/hfsplus/inode.c:-1
 hfsplus_unlink+0x4e3/0x730 fs/hfsplus/dir.c:405
 vfs_unlink+0x394/0x650 fs/namei.c:4673
 do_unlinkat+0x345/0x560 fs/namei.c:4737
 __do_sys_unlink fs/namei.c:4783 [inline]
 __se_sys_unlink fs/namei.c:4781 [inline]
 __x64_sys_unlink+0x47/0x50 fs/namei.c:4781
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f298518e577
Code: 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 57 00 00 00 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:00007ffe93ed3398 EFLAGS: 00000206 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f298518e577
RDX: 00007ffe93ed33c0 RSI: 00007ffe93ed3450 RDI: 00007ffe93ed3450
RBP: 00007ffe93ed3450 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000206 R12: 00007ffe93ed4540
R13: 00007f2985211d7d R14: 0000000000114b73 R15: 00007ffe93ed5610
 </TASK>
hfsplus: unable to mark blocks free: error -5
hfsplus: can't free extent: start 144, count 1
hfsplus: unable to mark blocks free: error -5
hfsplus: can't free extent: start 131, count 2
hfsplus: unable to mark blocks free: error -5
hfsplus: can't free extent: start 133, count 1
hfsplus: invalid extended attribute record
hfsplus: unable to mark blocks free: error -5
hfsplus: can't free extent: start 134, count 1
hfsplus: unable to mark blocks free: error -5
hfsplus: can't free extent: start 135, count 9