Commit 2795ecf6 authored by Kevin Wolf's avatar Kevin Wolf
Browse files

qcow2: Fix return value of alloc_refcount_block 



Someone forgot something in commit 29c1a730... Documenting the right
return value is not enough, you also need to actually return it in the
code.

This bug sometimes causes error return values even when everything has
succeeded: The new offset of the refcount block is truncated to 32 bits
and interpreted as signed. At least with small cluster sizes it's easy
to get a negative return value this way.

Signed-off-by: default avatarKevin Wolf <kwolf@redhat.com>
Reviewed-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent 8dc0a5e7

block/qcow2-refcount.c

+1 −1
Original line number Diff line number Diff line
@@ -400,7 +400,7 @@ static int alloc_refcount_block(BlockDriverState *bs, 
        return ret;

    }



    return new_block;

    return 0;



fail_table:

    g_free(new_table);