[FFmpeg-devel] [PATCH] avformat/rtmpproto: Don't free AVOpt-strings manually, fix crash

Andreas Rheinhardt andreas.rheinhardt at outlook.com
Sun Mar 31 04:36:37 EEST 2024


Andreas Rheinhardt:
> Andreas Rheinhardt:
>> Besides being redundant, freeing manually is actually harmful here,
>> as rtmp_close() may call gen_fcunpublish_stream() which dereferences
>> rt->playpath.
>>
>> Reported-by: Armin Hasitzka <armin at grabyo.com>
>> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt at outlook.com>
>> ---
>>  libavformat/rtmpproto.c | 3 ---
>>  1 file changed, 3 deletions(-)
>>
>> diff --git a/libavformat/rtmpproto.c b/libavformat/rtmpproto.c
>> index 4b01b67d28..b1d73b3d75 100644
>> --- a/libavformat/rtmpproto.c
>> +++ b/libavformat/rtmpproto.c
>> @@ -2917,9 +2917,6 @@ reconnect:
>>      return 0;
>>  
>>  fail:
>> -    av_freep(&rt->playpath);
>> -    av_freep(&rt->tcurl);
>> -    av_freep(&rt->flashver);
>>      av_dict_free(opts);
>>      rtmp_close(s);
>>      return ret;
> 
> I am pinging this and explicitly cc'ing Steven Liu, whose commit
> 991cf95fdeebc3af added the av_freeps to be removed above. Steven, did
> you just feel that there was missing freeing code for the buffers above
> or was there an actually confirmed memleak (there shouldn't be)?
> 
> - Andreas
> 

Another ping explicitly cc'ing Steven Liu, this time with a more recent
email.

- Andreas



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