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[FFmpeg-devel,16/19] avfilter/vf_signature: Fix leak of string upon error

Message ID 20200825140927.16433-16-andreas.rheinhardt@gmail.com
State Accepted
Commit 16ea88778e6f4e2d49318ea6e02fa938ac2f401e
Headers show
Series [FFmpeg-devel,01/19] avfilter/avfilter: Fix indentation
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Commit Message

Andreas Rheinhardt Aug. 25, 2020, 2:09 p.m. UTC
If an error happens between allocating a string intended to be used as
an inpad's name and attaching it to its input pad, the string leaks.
Fix this by inserting the inpad directly after allocating its string.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
---
 libavfilter/vf_signature.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

Comments

Paul B Mahol Aug. 26, 2020, 8:24 p.m. UTC | #1
On 8/25/20, Andreas Rheinhardt <andreas.rheinhardt@gmail.com> wrote:
> If an error happens between allocating a string intended to be used as
> an inpad's name and attaching it to its input pad, the string leaks.
> Fix this by inserting the inpad directly after allocating its string.
>
> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
> ---
>  libavfilter/vf_signature.c | 9 ++++-----
>  1 file changed, 4 insertions(+), 5 deletions(-)
>


LGTM

> diff --git a/libavfilter/vf_signature.c b/libavfilter/vf_signature.c
> index d09003746c..80957d0047 100644
> --- a/libavfilter/vf_signature.c
> +++ b/libavfilter/vf_signature.c
> @@ -663,6 +663,10 @@ static av_cold int init(AVFilterContext *ctx)
>
>          if (!pad.name)
>              return AVERROR(ENOMEM);
> +        if ((ret = ff_insert_inpad(ctx, i, &pad)) < 0) {
> +            av_freep(&pad.name);
> +            return ret;
> +        }
>
>          sc = &(sic->streamcontexts[i]);
>
> @@ -679,11 +683,6 @@ static av_cold int init(AVFilterContext *ctx)
>          sc->coarseend = sc->coarsesiglist;
>          sc->coarsecount = 0;
>          sc->midcoarse = 0;
> -
> -        if ((ret = ff_insert_inpad(ctx, i, &pad)) < 0) {
> -            av_freep(&pad.name);
> -            return ret;
> -        }
>      }
>
>      /* check filename */
> --
> 2.20.1
>
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diff mbox series

Patch

diff --git a/libavfilter/vf_signature.c b/libavfilter/vf_signature.c
index d09003746c..80957d0047 100644
--- a/libavfilter/vf_signature.c
+++ b/libavfilter/vf_signature.c
@@ -663,6 +663,10 @@  static av_cold int init(AVFilterContext *ctx)
 
         if (!pad.name)
             return AVERROR(ENOMEM);
+        if ((ret = ff_insert_inpad(ctx, i, &pad)) < 0) {
+            av_freep(&pad.name);
+            return ret;
+        }
 
         sc = &(sic->streamcontexts[i]);
 
@@ -679,11 +683,6 @@  static av_cold int init(AVFilterContext *ctx)
         sc->coarseend = sc->coarsesiglist;
         sc->coarsecount = 0;
         sc->midcoarse = 0;
-
-        if ((ret = ff_insert_inpad(ctx, i, &pad)) < 0) {
-            av_freep(&pad.name);
-            return ret;
-        }
     }
 
     /* check filename */