modpost: Fix resource leak in read_dump()

Function read_dump() memory maps the input via grab_file(), but fails to call
the corresponding unmap function. Add the missing call to release_file().
Detected by Coverity: CID 1192419

Signed-off-by: Christian Engelmayer <cengelma@gmx.at>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 066355673930342a1b5e839950cbd1186ed6c24b..ea3e2bdf1825dcdc88e2237842e2b5f5ca99decf 100644 (file)
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -2113,8 +2113,10 @@ static void read_dump(const char *fname, unsigned int kernel)
                s->preloaded = 1;
                sym_update_crc(symname, mod, crc, export_no(export));
        }
+       release_file(file, size);
        return;
 fail:
+       release_file(file, size);
        fatal("parse error in symbol dump file\n");
 }