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diff --git a/lib/libefivar/efivar-dp-xlate.c b/lib/libefivar/efivar-dp-xlate.c
--- a/lib/libefivar/efivar-dp-xlate.c
+++ b/lib/libefivar/efivar-dp-xlate.c
@@ -544,23 +544,25 @@
static int
build_dp(const char *efimedia, const char *relpath, efidp *dp)
{
- char *fp, *dptxt = NULL, *cp, *rp;
+ char *fp = NULL, *dptxt = NULL, *cp, *rp = NULL;
int rv = 0;
efidp out = NULL;
size_t len;
- rp = strdup(relpath);
- for (cp = rp; *cp; cp++)
- if (*cp == '/')
- *cp = '\\';
- fp = path_to_file_dp(rp);
- free(rp);
- if (fp == NULL) {
- rv = ENOMEM;
- goto errout;
+ if (relpath != NULL) {
+ rp = strdup(relpath);
+ for (cp = rp; *cp; cp++)
+ if (*cp == '/')
+ *cp = '\\';
+ fp = path_to_file_dp(rp);
+ free(rp);
+ if (fp == NULL) {
+ rv = ENOMEM;
+ goto errout;
+ }
}
- asprintf(&dptxt, "%s/%s", efimedia, fp);
+ asprintf(&dptxt, "%s/%s", efimedia, fp == NULL ? "" : fp);
out = malloc(8192);
len = efidp_parse_device_path(dptxt, out, 8192);
if (len > 8192) {

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