From 47807c4cfa5ffe1e5da27e3d3056d9b47ba998c5 Mon Sep 17 00:00:00 2001
From: Yauheni Kaliuta <yauheni.kaliuta@redhat.com>
Date: Sun, 29 Nov 2020 18:47:35 +0200
Subject: [PATCH] libkmod: kmod_builtin_get_modinfo: free modinfo on error

reason:kmod_builtin_get_modinfo: free modinfo on error
Conflict:NA
Reference:https://lore.kernel.org/linux-modules/CAKi4VA+kaWfLZ_Ue-teaJAvDQjfM6G-WK3KmMWVinR-Zg6T64A@mail.gmail.com/T/#t

The function allocates array but on building it if get_string()
fails it returns the error leaving the array allocated. The caller
does not care about it in error case either.

Free it to fix memory leak.

Signed-off-by: Yauheni Kaliuta <yauheni.kaliuta@redhat.com>
---
 libkmod/libkmod-builtin.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libkmod/libkmod-builtin.c b/libkmod/libkmod-builtin.c
index aaec5dd..fc9a376 100644
--- a/libkmod/libkmod-builtin.c
+++ b/libkmod/libkmod-builtin.c
@@ -314,6 +314,7 @@ ssize_t kmod_builtin_get_modinfo(struct kmod_ctx *ctx, const char *modname,
 		offset = get_string(iter, pos, &line, &linesz);
 		if (offset <= 0) {
 			count = (offset) ? -errno : -EOF;
+			free(*modinfo);
 			goto fail;
 		}
 
-- 
2.23.0