avcodec/h264_slice: Do not attempt to render into frames already output
authorMichael Niedermayer <michael@niedermayer.cc>
Wed, 3 Jan 2018 22:42:01 +0000 (23:42 +0100)
committerMichael Niedermayer <michael@niedermayer.cc>
Wed, 31 Jan 2018 21:56:15 +0000 (22:56 +0100)
commit761362fffb8661be98831234c49eb2314f1802b1
treec6ba5520c4729aa77356a6407e063069f040eb86
parent0abf465dc561ef219c58318852c624ce29456c01
avcodec/h264_slice: Do not attempt to render into frames already output

Fixes: null pointer dereference
Fixes: 4698/clusterfuzz-testcase-minimized-5096956322906112

This testcase does not reproduce the issue before 03b82b3ab9883cef017e513c7d0b3b986b3b3e7b

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 476665d4de989dba48ec1195215ccc8db54538f4)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
libavcodec/h264_slice.c