From: Stefan Richter <stefanr@s5r6.in-berlin.de>
Date: Mon, 22 Oct 2012 13:17:17 +0000 (+0200)
Subject: tools/firewire: nosy-dump: check for allocation failure
X-Git-Tag: v4.13~10524^2~3
X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=6fa79bcaecdbb0eb417afbc7fb0a8fa204308b62;p=mirror_ubuntu-bionic-kernel.git

tools/firewire: nosy-dump: check for allocation failure

Behavior of null pointer dereference is undefined in the C language.
Portably implement the desired behavior.

Reported-by: Yang Yeping <yangyeping_666@hotmail.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
---

diff --git a/tools/firewire/nosy-dump.c b/tools/firewire/nosy-dump.c
index f93b776370b6..3179c711bd65 100644
--- a/tools/firewire/nosy-dump.c
+++ b/tools/firewire/nosy-dump.c
@@ -150,6 +150,8 @@ subaction_create(uint32_t *data, size_t length)
 
 	/* we put the ack in the subaction struct for easy access. */
 	sa = malloc(sizeof *sa - sizeof sa->packet + length);
+	if (!sa)
+		exit(EXIT_FAILURE);
 	sa->ack = data[length / 4 - 1];
 	sa->length = length;
 	memcpy(&sa->packet, data, length);
@@ -180,6 +182,8 @@ link_transaction_lookup(int request_node, int response_node, int tlabel)
 	}
 
 	t = malloc(sizeof *t);
+	if (!t)
+		exit(EXIT_FAILURE);
 	t->request_node = request_node;
 	t->response_node = response_node;
 	t->tlabel = tlabel;