loop9: detected capacity change from 0 to 1024
============================================
WARNING: possible recursive locking detected
syzkaller #0 Tainted: G             L     
--------------------------------------------
syz.9.1123/12541 is trying to acquire lock:
ffff88811135c708 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_get_block+0x39e/0x1670

but task is already holding lock:
ffff88811135b208 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_truncate+0x2b3/0xc30

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

4 locks held by syz.9.1123/12541:
 #0: ffff8881b3e98420 (sb_writers#17){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90
 #1: ffff88811135b3f8 (&sb->s_type->i_mutex_key#31){+.+.}-{4:4}, at: do_truncate+0x18f/0x250
 #2: ffff88811135b208 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_truncate+0x2b3/0xc30
 #3: ffff888110fa28f8 (&sbi->alloc_mutex){+.+.}-{4:4}, at: hfsplus_block_free+0xc7/0x630

stack backtrace:
CPU: 0 UID: 0 PID: 12541 Comm: syz.9.1123 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150
 print_deadlock_bug+0x279/0x290
 __lock_acquire+0x253f/0x2cf0
 lock_acquire+0xf0/0x2e0
 __mutex_lock+0x19f/0x1300
 hfsplus_get_block+0x39e/0x1670
 block_read_full_folio+0x29f/0x830
 filemap_read_folio+0x137/0x3b0
 do_read_cache_folio+0x358/0x590
 read_cache_page+0x5d/0x170
 hfsplus_block_free+0x134/0x630
 hfsplus_free_extents+0x121/0xa50
 hfsplus_file_truncate+0x762/0xc30
 hfsplus_setattr+0x1c4/0x270
 notify_change+0xc1a/0xf40
 do_truncate+0x1c2/0x250
 path_openat+0x2f89/0x3860
 do_file_open+0x23e/0x4a0
 do_sys_openat2+0x113/0x200
 __x64_sys_creat+0x8f/0xc0
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6a2919c819
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f6a2a024028 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
RAX: ffffffffffffffda RBX: 00007f6a29415fa0 RCX: 00007f6a2919c819
RDX: 0000000000000000 RSI: 0000000000000018 RDI: 0000200000000e40
RBP: 00007f6a29232c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6a29416038 R14: 00007f6a29415fa0 R15: 00007ffc005c2ff8
 </TASK>
hfsplus: unable to mark blocks free: error -5
hfsplus: can't free extent: start 134, count 1
