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Groups > linux.kernel > #1471416

[PATCH 1/1] ASoC: Intel: Atom: add a missing star in a memcpy call

From Nicolas Iooss <nicolas.iooss_linux@m4x.org>
Newsgroups linux.kernel
Subject [PATCH 1/1] ASoC: Intel: Atom: add a missing star in a memcpy call
Date 2016-08-28 19:50 +0200
Message-ID <sbcnv-4H8-13@gated-at.bofh.it> (permalink)
Organization linux.* mail to news gateway

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In sst_prepare_and_post_msg(), when a response is received in "block",
the following code gets executed:

    *data = kzalloc(block->size, GFP_KERNEL);
    memcpy(data, (void *) block->data, block->size);

The memcpy() call overwrites the content of the *data pointer instead of
filling the newly-allocated memory (which pointer is hold by *data).
Fix this by using *data in the memcpy() call.

Fixes: 60dc8dbacb00 ("ASoC: Intel: sst: Add some helper functions")
Cc: stable@vger.kernel.org # 3.19.x
Signed-off-by: Nicolas Iooss <nicolas.iooss_linux@m4x.org>
---
 sound/soc/intel/atom/sst/sst_pvt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/intel/atom/sst/sst_pvt.c b/sound/soc/intel/atom/sst/sst_pvt.c
index adb32fefd693..7c398b7c9d4b 100644
--- a/sound/soc/intel/atom/sst/sst_pvt.c
+++ b/sound/soc/intel/atom/sst/sst_pvt.c
@@ -289,7 +289,7 @@ int sst_prepare_and_post_msg(struct intel_sst_drv *sst,
 				ret = -ENOMEM;
 				goto out;
 			} else
-				memcpy(data, (void *) block->data, block->size);
+				memcpy(*data, (void *) block->data, block->size);
 		}
 	}
 out:
-- 
2.9.3

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[PATCH 1/1] ASoC: Intel: Atom: add a missing star in a memcpy call Nicolas Iooss <nicolas.iooss_linux@m4x.org> - 2016-08-28 19:50 +0200
  Misuses of ** ? (was Re: [PATCH 1/1] ASoC: Intel: Atom: add a  missing star in a memcpy call) Joe Perches <joe@perches.com> - 2016-08-28 20:00 +0200
    Re: Misuses of ** ? (was Re: [PATCH 1/1] ASoC: Intel: Atom: add a  missing star in a memcpy call) Nicolas Iooss <nicolas.iooss_linux@m4x.org> - 2016-08-28 21:00 +0200
      Re: Misuses of ** ? (was Re: [PATCH 1/1] ASoC: Intel: Atom: add a  missing star in a memcpy call) Julia Lawall <julia.lawall@lip6.fr> - 2016-08-28 21:40 +0200
        Re: Misuses of ** ? (was Re: [PATCH 1/1] ASoC: Intel: Atom: add a  missing star in a memcpy call) Joe Perches <joe@perches.com> - 2016-08-28 22:40 +0200
          Re: Misuses of ** ? (was Re: [PATCH 1/1] ASoC: Intel: Atom: add a  missing star in a memcpy call) Julia Lawall <julia.lawall@lip6.fr> - 2016-08-28 23:50 +0200
            Re: Misuses of ** ? (was Re: [PATCH 1/1] ASoC: Intel: Atom: add a  missing star in a memcpy call) Joe Perches <joe@perches.com> - 2016-08-29 00:00 +0200
  Re: [PATCH 1/1] ASoC: Intel: Atom: add a missing star in a memcpy  call Joe Perches <joe@perches.com> - 2016-08-28 20:20 +0200
    Re: [PATCH 1/1] ASoC: Intel: Atom: add a missing star in a memcpy  call Nicolas Iooss <nicolas.iooss_linux@m4x.org> - 2016-08-28 20:40 +0200

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