From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Date: Fri, 4 Sep 2015 05:35:47 +0000 (-0400)
Subject: Fix: elf: NULL pointer dereference
X-Git-Tag: v2.8.0-rc1~87
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=5ada26b49f63b2c4f9e4e01aba69f9fb9e935c4f;p=lttng-ust.git

Fix: elf: NULL pointer dereference

Coverity reported:
CID 1321730 (#1 of 1): Dereference null return value (NULL_RETURNS)15.
dereference: Dereferencing a pointer that might be null _build_id when
calling lttng_ust_read.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
---

diff --git a/liblttng-ust/lttng-ust-elf.c b/liblttng-ust/lttng-ust-elf.c
index ee7eb7c4..dd50f2b6 100644
--- a/liblttng-ust/lttng-ust-elf.c
+++ b/liblttng-ust/lttng-ust-elf.c
@@ -452,7 +452,7 @@ int lttng_ust_elf_get_build_id_from_segment(
 
 		_length = nhdr.n_descsz;
 		_build_id = zmalloc(sizeof(uint8_t) * _length);
-		if (!build_id) {
+		if (!_build_id) {
 			goto error;
 		}