linux-kernel - [PATCH] ASoC: Intel: Skylake: fix typo in sizeof

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:	Thu, 29 Oct 2015 23:04:41 +0100
From:	Vincent Stehlé <vincent.stehle@...oste.net>
To:	alsa-devel@...a-project.org
Cc:	linux-kernel@...r.kernel.org,
	Vincent Stehlé <vincent.stehle@...oste.net>,
	"Subhransu S . Prusty" <subhransu.s.prusty@...el.com>,
	Jeeja KP <jeeja.kp@...el.com>,
	Vinod Koul <vinod.koul@...el.com>,
	Mark Brown <broonie@...nel.org>, trivial@...nel.org
Subject: [PATCH] ASoC: Intel: Skylake: fix typo in sizeof

The size of the pointer to a data structure to send is erroneously
passed to sst_ipc_tx_message_wait() as its tx_bytes argument. It should
be given the size of the pointed skl_ipc_dxstate_info structure instead.

Coincidentally, both the pointer and the structure have the same size of
8 bytes on a 64 bit machine, which "masks" the issue. Compiling for 32
bit reveals the issue more clearly.

Fix the typo for correctness, and to make the code robust to future
evolutions of the skl_ipc_dxstate_info structure size.

This fixes the following coccicheck error:

  sound/soc/intel/skylake/skl-sst-ipc.c:641:8-14: ERROR: application of sizeof to pointer

Signed-off-by: Vincent Stehlé <vincent.stehle@...oste.net>
Cc: Subhransu S. Prusty <subhransu.s.prusty@...el.com>
Cc: Jeeja KP <jeeja.kp@...el.com>
Cc: Vinod Koul <vinod.koul@...el.com>
Cc: Mark Brown <broonie@...nel.org>
Cc: trivial@...nel.org
---
 sound/soc/intel/skylake/skl-sst-ipc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/intel/skylake/skl-sst-ipc.c b/sound/soc/intel/skylake/skl-sst-ipc.c
index 937a0a3..9aee835 100644
--- a/sound/soc/intel/skylake/skl-sst-ipc.c
+++ b/sound/soc/intel/skylake/skl-sst-ipc.c
@@ -638,7 +638,7 @@ int skl_ipc_set_dx(struct sst_generic_ipc *ipc, u8 instance_id,
 	dev_dbg(ipc->dev, "In %s primary =%x ext=%x\n", __func__,
 			 header.primary, header.extension);
 	ret = sst_ipc_tx_message_wait(ipc, *ipc_header,
-				dx, sizeof(dx), NULL, 0);
+				dx, sizeof(*dx), NULL, 0);
 	if (ret < 0) {
 		dev_err(ipc->dev, "ipc: set dx failed, err %d\n", ret);
 		return ret;
-- 
2.6.1

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/