======================================================
WARNING: possible circular locking dependency detected
6.7.0-rc7-syzkaller-00051-g2639772a11c8 #0 Not tainted
------------------------------------------------------
syz-executor397/5061 is trying to acquire lock:
ffff8880206480b0 (&tree->tree_lock){+.+.}-{3:3}, at: hfsplus_file_truncate+0x882/0x9d0 fs/hfsplus/extents.c:595

but task is already holding lock:
ffff88807e556848 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_truncate+0x204/0x9d0 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+0x175/0x9d0 kernel/locking/mutex.c:747
       hfsplus_file_extend+0x1c1/0x1090 fs/hfsplus/extents.c:457
       hfsplus_bmap_reserve+0x318/0x410 fs/hfsplus/btree.c:358
       hfsplus_create_cat+0x20f/0x10d0 fs/hfsplus/catalog.c:272
       hfsplus_fill_super+0x16ca/0x1bc0 fs/hfsplus/super.c:560
       mount_bdev+0x1f3/0x2e0 fs/super.c:1650
       legacy_get_tree+0x109/0x220 fs/fs_context.c:662
       vfs_get_tree+0x8c/0x370 fs/super.c:1771
       do_new_mount fs/namespace.c:3337 [inline]
       path_mount+0x1492/0x1ed0 fs/namespace.c:3664
       do_mount fs/namespace.c:3677 [inline]
       __do_sys_mount fs/namespace.c:3886 [inline]
       __se_sys_mount fs/namespace.c:3863 [inline]
       __x64_sys_mount+0x293/0x310 fs/namespace.c:3863
       do_syscall_x64 arch/x86/entry/common.c:52 [inline]
       do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83
       entry_SYSCALL_64_after_hwframe+0x63/0x6b

-> #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:3869 [inline]
       __lock_acquire+0x2433/0x3b20 kernel/locking/lockdep.c:5137
       lock_acquire kernel/locking/lockdep.c:5754 [inline]
       lock_acquire+0x1ae/0x520 kernel/locking/lockdep.c:5719
       __mutex_lock_common kernel/locking/mutex.c:603 [inline]
       __mutex_lock+0x175/0x9d0 kernel/locking/mutex.c:747
       hfsplus_file_truncate+0x882/0x9d0 fs/hfsplus/extents.c:595
       hfsplus_setattr+0x1eb/0x310 fs/hfsplus/inode.c:269
       notify_change+0x742/0x11c0 fs/attr.c:499
       do_truncate+0x15c/0x220 fs/open.c:66
       vfs_truncate+0x3eb/0x4d0 fs/open.c:112
       do_sys_truncate fs/open.c:135 [inline]
       __do_sys_truncate fs/open.c:147 [inline]
       __se_sys_truncate fs/open.c:145 [inline]
       __x64_sys_truncate+0x173/0x1e0 fs/open.c:145
       do_syscall_x64 arch/x86/entry/common.c:52 [inline]
       do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83
       entry_SYSCALL_64_after_hwframe+0x63/0x6b

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-executor397/5061:
 #0: ffff88807e4f0418 (sb_writers#10){.+.+}-{0:0}, at: vfs_truncate+0xea/0x4d0 fs/open.c:85
 #1: ffff88807e556a40 (&sb->s_type->i_mutex_key#15){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
 #1: ffff88807e556a40 (&sb->s_type->i_mutex_key#15){+.+.}-{3:3}, at: do_truncate+0x14b/0x220 fs/open.c:64
 #2: ffff88807e556848 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_truncate+0x204/0x9d0 fs/hfsplus/extents.c:576

stack backtrace:
CPU: 1 PID: 5061 Comm: syz-executor397 Not tainted 6.7.0-rc7-syzkaller-00051-g2639772a11c8 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
 check_noncircular+0x317/0x400 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:3869 [inline]
 __lock_acquire+0x2433/0x3b20 kernel/locking/lockdep.c:5137
 lock_acquire kernel/locking/lockdep.c:5754 [inline]
 lock_acquire+0x1ae/0x520 kernel/locking/lockdep.c:5719
 __mutex_lock_common kernel/locking/mutex.c:603 [inline]
 __mutex_lock+0x175/0x9d0 kernel/locking/mutex.c:747
 hfsplus_file_truncate+0x882/0x9d0 fs/hfsplus/extents.c:595
 hfsplus_setattr+0x1eb/0x310 fs/hfsplus/inode.c:269
 notify_change+0x742/0x11c0 fs/attr.c:499
 do_truncate+0x15c/0x220 fs/open.c:66
 vfs_truncate+0x3eb/0x4d0 fs/open.c:112
 do_sys_truncate fs/open.c:135 [inline]
 __do_sys_truncate fs/open.c:147 [inline]
 __se_sys_truncate fs/open.c:145 [inline]
 __x64_sys_truncate+0x173/0x1e0 fs/open.c:145
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f80f2ff65f9
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:00007ffc41a45288 EFLAGS: 00000246 ORIG_RAX: 000000000000004c
RAX: ffffffffffffffda RBX: 0031656c69662f2e RCX: 00007f80f2ff65f9
RDX: 00007f80f2ff58f0 RSI: 0000000000000000 RDI: 0000000020000080
RBP: 00007f80f3069610 R08: 0000000000000646 R09: 0000000000000000
R10: 00007ffc41a45150 R11: 0000000000000246 R12: 0000000000000001
R13: 00007f