and is ignored by this kernel. Remove the mand
         option from the mount to silence this warning.
=======================================================
======================================================
WARNING: possible circular locking dependency detected
6.6.0-rc7-syzkaller-00018-gd88520ad73b7 #0 Not tainted
------------------------------------------------------
syz-executor198/5037 is trying to acquire lock:
ffff8880784d40b0 (&tree->tree_lock){+.+.}-{3:3}, at: hfsplus_file_truncate+0x811/0xb40 fs/hfsplus/extents.c:595

but task is already holding lock:
ffff88801fd707c8 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_truncate+0x2da/0xb40 fs/hfsplus/extents.c:576

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #1 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}:
       __mutex_lock_common kernel/locking/mutex.c:603 [inline]
       __mutex_lock+0x136/0xd60 kernel/locking/mutex.c:747
       hfsplus_file_extend+0x21b/0x1b70 fs/hfsplus/extents.c:457
       hfsplus_bmap_reserve+0x105/0x4e0 fs/hfsplus/btree.c:358
       hfsplus_create_cat+0x1b0/0x1b90 fs/hfsplus/catalog.c:272
       hfsplus_fill_super+0x13ea/0x1c90 fs/hfsplus/super.c:560
       mount_bdev+0x237/0x300 fs/super.c:1629
       legacy_get_tree+0xef/0x190 fs/fs_context.c:662
       vfs_get_tree+0x8c/0x280 fs/super.c:1750
       do_new_mount+0x28f/0xae0 fs/namespace.c:3335
       do_mount fs/namespace.c:3675 [inline]
       __do_sys_mount fs/namespace.c:3884 [inline]
       __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3861
       do_syscall_x64 arch/x86/entry/common.c:50 [inline]
       do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
       entry_SYSCALL_64_after_hwframe+0x63/0xcd

-> #0 (&tree->tree_lock){+.+.}-{3:3}:
       check_prev_add kernel/locking/lockdep.c:3134 [inline]
       check_prevs_add kernel/locking/lockdep.c:3253 [inline]
       validate_chain kernel/locking/lockdep.c:3868 [inline]
       __lock_acquire+0x39ff/0x7f70 kernel/locking/lockdep.c:5136
       lock_acquire+0x1e3/0x520 kernel/locking/lockdep.c:5753
       __mutex_lock_common kernel/locking/mutex.c:603 [inline]
       __mutex_lock+0x136/0xd60 kernel/locking/mutex.c:747
       hfsplus_file_truncate+0x811/0xb40 fs/hfsplus/extents.c:595
       hfsplus_setattr+0x1b9/0x260 fs/hfsplus/inode.c:269
       notify_change+0xb99/0xe60 fs/attr.c:499
       do_truncate+0x220/0x300 fs/open.c:66
       vfs_truncate+0x2e1/0x3a0 fs/open.c:112
       do_sys_truncate+0xde/0x190 fs/open.c:135
       do_syscall_x64 arch/x86/entry/common.c:50 [inline]
       do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
       entry_SYSCALL_64_after_hwframe+0x63/0xcd

other info that might help us debug this:

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&HFSPLUS_I(inode)->extents_lock);
                               lock(&tree->tree_lock);
                               lock(&HFSPLUS_I(inode)->extents_lock);
  lock(&tree->tree_lock);

 *** DEADLOCK ***

3 locks held by syz-executor198/5037:
 #0: ffff8880784d2410 (sb_writers#9){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:403
 #1: ffff88801fd709c0 (&sb->s_type->i_mutex_key#14){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
 #1: ffff88801fd709c0 (&sb->s_type->i_mutex_key#14){+.+.}-{3:3}, at: do_truncate+0x20c/0x300 fs/open.c:64
 #2: ffff88801fd707c8 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_truncate+0x2da/0xb40 fs/hfsplus/extents.c:576

stack backtrace:
CPU: 1 PID: 5037 Comm: syz-executor198 Not tainted 6.6.0-rc7-syzkaller-00018-gd88520ad73b7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
 check_noncircular+0x375/0x4a0 kernel/locking/lockdep.c:2187
 check_prev_add kernel/locking/lockdep.c:3134 [inline]
 check_prevs_add kernel/locking/lockdep.c:3253 [inline]
 validate_chain kernel/locking/lockdep.c:3868 [inline]
 __lock_acquire+0x39ff/0x7f70 kernel/locking/lockdep.c:5136
 lock_acquire+0x1e3/0x520 kernel/locking/lockdep.c:5753
 __mutex_lock_common kernel/locking/mutex.c:603 [inline]
 __mutex_lock+0x136/0xd60 kernel/locking/mutex.c:747
 hfsplus_file_truncate+0x811/0xb40 fs/hfsplus/extents.c:595
 hfsplus_setattr+0x1b9/0x260 fs/hfsplus/inode.c:269
 notify_change+0xb99/0xe60 fs/attr.c:499
 do_truncate+0x220/0x300 fs/open.c:66
 vfs_truncate+0x2e1/0x3a0 fs/open.c:112
 do_sys_truncate+0xde/0x190 fs/open.c:135
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fb3e6d4a5f9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 17 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff76d42098 EFLAGS: 00000246 ORIG_RAX: 0000000000