From: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Date: Mon, 6 Apr 2020 16:39:17 +0000 (-0400)
Subject: Fix: relayd: unchecked allocation result of unlinked file pool
X-Git-Tag: v2.13.0-rc1~675
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=9604bd17bfb1f116b6d4e56ab1d95e08cde17a06;p=lttng-tools.git

Fix: relayd: unchecked allocation result of unlinked file pool

`pool` is not checked for NULL after its allocation. Error out
if the allocation fails.

In lttng_unlinked_file_pool_create: Return value of function which
returns null is dereferenced without checking (CWE-476)

Reported-by: Coverity Scan
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I2a7717701cf3d11de557b9ecdc6609c1f6a1fd6f
---

diff --git a/src/common/fd-tracker/inode.c b/src/common/fd-tracker/inode.c
index 82799aee7..f105f5bd3 100644
--- a/src/common/fd-tracker/inode.c
+++ b/src/common/fd-tracker/inode.c
@@ -250,6 +250,10 @@ LTTNG_HIDDEN struct lttng_unlinked_file_pool *lttng_unlinked_file_pool_create(
 {
 	struct lttng_unlinked_file_pool *pool = zmalloc(sizeof(*pool));
 
+	if (!pool) {
+		goto error;
+	}
+
 	if (!path || *path != '/') {
 		ERR("Unlinked file pool must be created with an absolute path, path = \"%s\"",
 				path ? path : "NULL");