1 files changed, 9 insertions, 2 deletions

diff --git a/config.c b/config.c
index dc7f8b2abc..d348d792aa 100644
--- a/config.c
+++ b/config.c
@@ -2048,8 +2048,15 @@ int git_config_set_multivar_in_file(const char *config_filename,
 
 		fstat(in_fd, &st);
 		contents_sz = xsize_t(st.st_size);
-		contents = xmmap(NULL, contents_sz, PROT_READ,
-			MAP_PRIVATE, in_fd, 0);
+		contents = xmmap_gently(NULL, contents_sz, PROT_READ,
+					MAP_PRIVATE, in_fd, 0);
+		if (contents == MAP_FAILED) {
+			error("unable to mmap '%s': %s",
+			      config_filename, strerror(errno));
+			ret = CONFIG_INVALID_FILE;
+			contents = NULL;
+			goto out_free;
+		}
 		close(in_fd);
 
 		if (chmod(lock->filename.buf, st.st_mode & 07777) < 0) {