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From: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
To: unlisted-recipients:; (no To-header on input)@casper.infradead.org
Cc: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>,
	Linux Media Mailing List <linux-media@vger.kernel.org>,
	Mauro Carvalho Chehab <mchehab@infradead.org>,
	Maxime Ripard <maxime.ripard@bootlin.com>,
	Paul Kocialkowski <paul.kocialkowski@bootlin.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Chen-Yu Tsai <wens@csie.org>,
	devel@driverdev.osuosl.org, linux-arm-kernel@lists.infradead.org
Subject: [PATCH] cedrus: check if kzalloc() fails
Date: Tue,  6 Nov 2018 06:21:29 -0500	[thread overview]
Message-ID: <b9bd5d87291191eeeef2b0611a1cc0acde52b2c9.1541503285.git.mchehab+samsung@kernel.org> (raw)

As warned by static code analizer checkers:
	drivers/staging/media/sunxi/cedrus/cedrus.c: drivers/staging/media/sunxi/cedrus/cedrus.c:93 cedrus_init_ctrls() error: potential null dereference 'ctx->ctrls'.  (kzalloc returns null)

The problem is that it assumes that kzalloc() will always
succeed.

Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
---
 drivers/staging/media/sunxi/cedrus/cedrus.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/staging/media/sunxi/cedrus/cedrus.c b/drivers/staging/media/sunxi/cedrus/cedrus.c
index dd121f66fa2d..6a73a7841303 100644
--- a/drivers/staging/media/sunxi/cedrus/cedrus.c
+++ b/drivers/staging/media/sunxi/cedrus/cedrus.c
@@ -72,6 +72,8 @@ static int cedrus_init_ctrls(struct cedrus_dev *dev, struct cedrus_ctx *ctx)
 	ctrl_size = sizeof(ctrl) * CEDRUS_CONTROLS_COUNT + 1;
 
 	ctx->ctrls = kzalloc(ctrl_size, GFP_KERNEL);
+	if (!ctx->ctrls)
+		return -ENOMEM;
 	memset(ctx->ctrls, 0, ctrl_size);
 
 	for (i = 0; i < CEDRUS_CONTROLS_COUNT; i++) {
-- 
2.19.1

WARNING: multiple messages have this Message-ID (diff)
From: mchehab+samsung@kernel.org (Mauro Carvalho Chehab)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] cedrus: check if kzalloc() fails
Date: Tue,  6 Nov 2018 06:21:29 -0500	[thread overview]
Message-ID: <b9bd5d87291191eeeef2b0611a1cc0acde52b2c9.1541503285.git.mchehab+samsung@kernel.org> (raw)

As warned by static code analizer checkers:
	drivers/staging/media/sunxi/cedrus/cedrus.c: drivers/staging/media/sunxi/cedrus/cedrus.c:93 cedrus_init_ctrls() error: potential null dereference 'ctx->ctrls'.  (kzalloc returns null)

The problem is that it assumes that kzalloc() will always
succeed.

Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
---
 drivers/staging/media/sunxi/cedrus/cedrus.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/staging/media/sunxi/cedrus/cedrus.c b/drivers/staging/media/sunxi/cedrus/cedrus.c
index dd121f66fa2d..6a73a7841303 100644
--- a/drivers/staging/media/sunxi/cedrus/cedrus.c
+++ b/drivers/staging/media/sunxi/cedrus/cedrus.c
@@ -72,6 +72,8 @@ static int cedrus_init_ctrls(struct cedrus_dev *dev, struct cedrus_ctx *ctx)
 	ctrl_size = sizeof(ctrl) * CEDRUS_CONTROLS_COUNT + 1;
 
 	ctx->ctrls = kzalloc(ctrl_size, GFP_KERNEL);
+	if (!ctx->ctrls)
+		return -ENOMEM;
 	memset(ctx->ctrls, 0, ctrl_size);
 
 	for (i = 0; i < CEDRUS_CONTROLS_COUNT; i++) {
-- 
2.19.1

             reply	other threads:[~2018-11-06 20:46 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-11-06 11:21 Mauro Carvalho Chehab [this message]
2018-11-06 11:21 ` [PATCH] cedrus: check if kzalloc() fails Mauro Carvalho Chehab
2018-11-06 12:34 ` Maxime Ripard
2018-11-06 12:34   ` Maxime Ripard

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