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From: Gaurav Singh <gaurav1086@gmail.com>
To: gaurav1086@gmail.com, Alexei Starovoitov <ast@kernel.org>,
	Daniel Borkmann <daniel@iogearbox.net>,
	"David S. Miller" <davem@davemloft.net>,
	Jakub Kicinski <kuba@kernel.org>,
	Jesper Dangaard Brouer <hawk@kernel.org>,
	John Fastabend <john.fastabend@gmail.com>,
	Martin KaFai Lau <kafai@fb.com>, Song Liu <songliubraving@fb.com>,
	Yonghong Song <yhs@fb.com>, Andrii Nakryiko <andriin@fb.com>,
	KP Singh <kpsingh@chromium.org>,
	netdev@vger.kernel.org (open list:XDP (eXpress Data Path)),
	bpf@vger.kernel.org (open list:XDP (eXpress Data Path)),
	linux-kernel@vger.kernel.org (open list)
Subject: [PATCH] xdp_rxq_info_user: Replace malloc/memset w/calloc
Date: Thu, 11 Jun 2020 11:02:21 -0400	[thread overview]
Message-ID: <20200611150221.15665-1-gaurav1086@gmail.com> (raw)

Replace malloc/memset with calloc

Signed-off-by: Gaurav Singh <gaurav1086@gmail.com>
---
 samples/bpf/xdp_rxq_info_user.c | 13 +++----------
 1 file changed, 3 insertions(+), 10 deletions(-)

diff --git a/samples/bpf/xdp_rxq_info_user.c b/samples/bpf/xdp_rxq_info_user.c
index 4fe47502ebed..caa4e7ffcfc7 100644
--- a/samples/bpf/xdp_rxq_info_user.c
+++ b/samples/bpf/xdp_rxq_info_user.c
@@ -198,11 +198,8 @@ static struct datarec *alloc_record_per_cpu(void)
 {
 	unsigned int nr_cpus = bpf_num_possible_cpus();
 	struct datarec *array;
-	size_t size;
 
-	size = sizeof(struct datarec) * nr_cpus;
-	array = malloc(size);
-	memset(array, 0, size);
+	array = calloc(nr_cpus, sizeof(struct datarec));
 	if (!array) {
 		fprintf(stderr, "Mem alloc error (nr_cpus:%u)\n", nr_cpus);
 		exit(EXIT_FAIL_MEM);
@@ -214,11 +211,8 @@ static struct record *alloc_record_per_rxq(void)
 {
 	unsigned int nr_rxqs = bpf_map__def(rx_queue_index_map)->max_entries;
 	struct record *array;
-	size_t size;
 
-	size = sizeof(struct record) * nr_rxqs;
-	array = malloc(size);
-	memset(array, 0, size);
+	array = calloc(nr_rxqs, sizeof(struct record));
 	if (!array) {
 		fprintf(stderr, "Mem alloc error (nr_rxqs:%u)\n", nr_rxqs);
 		exit(EXIT_FAIL_MEM);
@@ -232,8 +226,7 @@ static struct stats_record *alloc_stats_record(void)
 	struct stats_record *rec;
 	int i;
 
-	rec = malloc(sizeof(*rec));
-	memset(rec, 0, sizeof(*rec));
+	rec = calloc(1, sizeof(struct stats_record));
 	if (!rec) {
 		fprintf(stderr, "Mem alloc error\n");
 		exit(EXIT_FAIL_MEM);
-- 
2.17.1


             reply	other threads:[~2020-06-11 15:02 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-11 15:02 Gaurav Singh [this message]
2020-06-11 18:01 ` [PATCH] xdp_rxq_info_user: Replace malloc/memset w/calloc Jesper Dangaard Brouer
2020-06-12  0:26 ` Gaurav Singh
2020-06-12  0:36 ` Gaurav Singh
2020-06-12  6:42   ` Jesper Dangaard Brouer
2020-06-12 10:14     ` Joe Perches
2020-06-12 12:05       ` Jesper Dangaard Brouer
2020-06-12 15:19         ` Joe Perches
2020-06-12 12:06       ` Toke Høiland-Jørgensen
2020-06-12 18:53 ` [PATCH] xdp_rxq_info_user: Fix null pointer dereference. Replace malloc/memset with calloc Gaurav Singh
2020-06-12 20:20   ` Jesper Dangaard Brouer
2020-06-12 22:58     ` John Fastabend
2020-06-18  0:11 ` [PATCH] ia64: Add null pointer check for task in default_handler Gaurav Singh

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