============================================
WARNING: possible recursive locking detected
syzkaller #0 Not tainted
--------------------------------------------
syz.0.0/5324 is trying to acquire lock:
ffff888012cfc0a0 (&HFS_I(tree->inode)->extents_lock){+.+.}-{4:4}, at: hfs_extend_file+0xf9/0x1680 fs/hfs/extent.c:397

but task is already holding lock:
ffff888012cfba20 (&HFS_I(tree->inode)->extents_lock){+.+.}-{4:4}, at: hfs_extend_file+0xf9/0x1680 fs/hfs/extent.c:397

other info that might help us debug this:
 Possible unsafe locking scenario:

       CPU0
       ----
  lock(&HFS_I(tree->inode)->extents_lock);
  lock(&HFS_I(tree->inode)->extents_lock);

 *** DEADLOCK ***

 May be due to missing lock nesting notation

locks held by syz.0.0/5324: 6, last CPU#0:
 #0: ffff888013384460 (sb_writers#12){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:494
 #1: ffff888012cfb600 (&type->i_mutex_dir_key#8/1){+.+.}-{4:4}, at: inode_lock_nested include/linux/fs.h:1069 [inline]
 #1: ffff888012cfb600 (&type->i_mutex_dir_key#8/1){+.+.}-{4:4}, at: lock_rename fs/namei.c:3785 [inline]
 #1: ffff888012cfb600 (&type->i_mutex_dir_key#8/1){+.+.}-{4:4}, at: __start_renaming+0x148/0x410 fs/namei.c:3878
 #2: ffff888012cfb040 (&sb->s_type->i_mutex_key#24/4){+.+.}-{4:4}, at: vfs_rename+0x696/0xef0 fs/namei.c:6168
 #3: ffff88801338c0a8 (&tree->tree_lock){+.+.}-{4:4}, at: hfs_find_init+0x18d/0x300 fs/hfs/bfind.c:-1
 #4: ffff888012cfba20 (&HFS_I(tree->inode)->extents_lock){+.+.}-{4:4}, at: hfs_extend_file+0xf9/0x1680 fs/hfs/extent.c:397
 #5: ffff88801338e0a8 (&tree->tree_lock/1){+.+.}-{4:4}, at: hfs_find_init+0x18d/0x300 fs/hfs/bfind.c:-1

stack backtrace:
CPU: 0 UID: 0 PID: 5324 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 print_deadlock_bug+0x27a/0x290 kernel/locking/lockdep.c:3085
 check_deadlock kernel/locking/lockdep.c:3137 [inline]
 validate_chain kernel/locking/lockdep.c:3939 [inline]
 __lock_acquire+0x25db/0x2de0 kernel/locking/lockdep.c:5288
 lock_acquire+0x115/0x350 kernel/locking/lockdep.c:5942
 __mutex_lock_common kernel/locking/mutex.c:646 [inline]
 __mutex_lock+0x19d/0x1550 kernel/locking/mutex.c:821
 hfs_extend_file+0xf9/0x1680 fs/hfs/extent.c:397
 hfs_bmap_reserve+0x108/0x430 fs/hfs/btree.c:399
 __hfs_ext_write_extent+0x1fc/0x470 fs/hfs/extent.c:121
 __hfs_ext_cache_extent+0x6e/0x9b0 fs/hfs/extent.c:174
 hfs_ext_read_extent fs/hfs/extent.c:202 [inline]
 hfs_extend_file+0x3ad/0x1680 fs/hfs/extent.c:401
 hfs_bmap_reserve+0x108/0x430 fs/hfs/btree.c:399
 hfs_cat_move+0x211/0xba0 fs/hfs/catalog.c:463
 hfs_rename+0x117/0x1f0 fs/hfs/dir.c:300
 vfs_rename+0xbd9/0xef0 fs/namei.c:6208
 filename_renameat2+0x533/0x9a0 fs/namei.c:6326
 __do_sys_renameat2 fs/namei.c:6355 [inline]
 __se_sys_renameat2+0x5a/0x2c0 fs/namei.c:6350
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fae9fb9e159
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:00007faea09d2fe8 EFLAGS: 00000246 ORIG_RAX: 000000000000013c
RAX: ffffffffffffffda RBX: 00007fae9fe25fa0 RCX: 00007fae9fb9e159
RDX: ffffffffffffff9c RSI: 0000200000000580 RDI: ffffffffffffff9c
RBP: 00007fae9fc3503b R08: 0000000000000000 R09: 0000000000000000
R10: 00002000000005c0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fae9fe26038 R14: 00007fae9fe25fa0 R15: 00007ffe6a92c618
 </TASK>
syz.0.0: attempt to access beyond end of device
loop0: rw=8388608, sector=66, nr_sectors = 1 limit=64
Buffer I/O error on dev loop0, logical block 66, async page read
syz.0.0: attempt to access beyond end of device
loop0: rw=8388608, sector=67, nr_sectors = 1 limit=64
Buffer I/O error on dev loop0, logical block 67, async page read
syz.0.0: attempt to access beyond end of device
loop0: rw=8388608, sector=68, nr_sectors = 1 limit=64
Buffer I/O error on dev loop0, logical block 68, async page read
syz.0.0: attempt to access beyond end of device
loop0: rw=8388608, sector=69, nr_sectors = 1 limit=64
Buffer I/O error on dev loop0, logical block 69, async page read
syz.0.0: attempt to access beyond end of device
loop0: rw=8388608, sector=70, nr_sectors = 1 limit=64
Buffer I/O error on dev loop0, logical block 70, async page read
syz.0.0: attempt to access beyond end of device
loop0: rw=8388608, sector=66, nr_sectors = 1 limit=64
Buffer I/O error on dev loop0, logical block 66, async page read
syz.0.0: attempt to access beyond end of device
loop0: rw=8388608, sector=67, nr_sectors = 1 limit=64
Buffer I/O error on dev loop0, logical block 67, async page read
syz.0.0: attempt to access beyond end of device
loop0: rw=8388608, sector=68, nr_sectors = 1 limit=64
Buffer I/O error on dev loop0, logical block 68, async page read
syz.0.0: attempt to access beyond end of device
loop0: rw=8388608, sector=69, nr_sectors = 1 limit=64
Buffer I/O error on dev loop0, logical block 69, async page read
syz.0.0: attempt to access beyond end of device
loop0: rw=8388608, sector=70, nr_sectors = 1 limit=64
Buffer I/O error on dev loop0, logical block 70, async page read