Messages in this thread Patch in this message | | | Date | Mon, 23 Jan 2012 21:02:57 +0100 (CET) | From | Jesper Juhl <> | Subject | [PATCH] sound: Fix memory leak on error in snd_compr_set_params() |
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If copy_from_user() does not return 0 we'll leak the memory we allocated for 'params' when that variable goes out of scope.
Also a small CodingStyle cleanup: Use braces on both branches of if/else when one branch needs it.
Signed-off-by: Jesper Juhl <jj@chaosbits.net> --- sound/core/compress_offload.c | 13 ++++++++----- 1 files changed, 8 insertions(+), 5 deletions(-)
diff --git a/sound/core/compress_offload.c b/sound/core/compress_offload.c index dac3633..a68aed7 100644 --- a/sound/core/compress_offload.c +++ b/sound/core/compress_offload.c @@ -441,19 +441,22 @@ snd_compr_set_params(struct snd_compr_stream *stream, unsigned long arg) params = kmalloc(sizeof(*params), GFP_KERNEL); if (!params) return -ENOMEM; - if (copy_from_user(params, (void __user *)arg, sizeof(*params))) - return -EFAULT; + if (copy_from_user(params, (void __user *)arg, sizeof(*params))) { + retval = -EFAULT; + goto out; + } retval = snd_compr_allocate_buffer(stream, params); if (retval) { - kfree(params); - return -ENOMEM; + retval = -ENOMEM; + goto out; } retval = stream->ops->set_params(stream, params); if (retval) goto out; stream->runtime->state = SNDRV_PCM_STATE_SETUP; - } else + } else { return -EPERM; + } out: kfree(params); return retval; -- 1.7.8.4
-- Jesper Juhl <jj@chaosbits.net> http://www.chaosbits.net/ Don't top-post http://www.catb.org/jargon/html/T/top-post.html Plain text mails only, please.
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