[FFmpeg-devel] Possible memory leaks in dshow capture
James Almer
jamrial at gmail.com
Thu Jan 3 17:42:20 EET 2019
On 1/3/2019 4:59 AM, Oliver Collyer wrote:
>
>
>> On 2 Jan 2019, at 17:52, Oliver Collyer <ovcollyer at mac.com> wrote:
>>
>>
>>
>>> On 2 Jan 2019, at 11:30, Oliver Collyer <ovcollyer at mac.com> wrote:
>>>
>>>
>>>
>>>> On 1 Jan 2019, at 23:58, James Almer <jamrial at gmail.com> wrote:
>>>>
>>>> On 1/1/2019 5:01 PM, Oliver Collyer wrote:
>>>>> ---------- Block 26224 at 0x0000000074240F70: 151 bytes ----------
>>>>> Leak Hash: 0x357CD5AF, Count: 1, Total 151 bytes
>>>>> Call Stack (TID 55752):
>>>>> ucrtbased.dll!aligned_malloc()
>>>>> c:\ffmpeg\source\ffmpeg\libavutil\mem.c (90): emu-server.exe!av_malloc() + 0x10 bytes
>>>>> c:\ffmpeg\source\ffmpeg\libavdevice\dshow_pin.c (213): emu-server.exe!libAVPin_Setup() + 0xA bytes
>>>>> c:\ffmpeg\source\ffmpeg\libavdevice\dshow_pin.c (252): emu-server.exe!libAVPin_Create() + 0x9B bytes
>>>>> c:\ffmpeg\source\ffmpeg\libavdevice\dshow_filter.c (184): emu-server.exe!libAVFilter_Setup() + 0xA bytes
>>>>> c:\ffmpeg\source\ffmpeg\libavdevice\dshow_filter.c (198): emu-server.exe!libAVFilter_Create() + 0xA8 bytes
>>>>> c:\ffmpeg\source\ffmpeg\libavdevice\dshow.c (809): emu-server.exe!dshow_open_device() + 0x1C bytes
>>>>> c:\ffmpeg\source\ffmpeg\libavdevice\dshow.c (1150): emu-server.exe!dshow_read_header() + 0x18 bytes
>>>>> c:\ffmpeg\source\ffmpeg\libavformat\utils.c (631): emu-server.exe!avformat_open_input() + 0x11 bytes
>>>>> c:\users\oliver\perforce\non-si\emu\shared\dsdevice_streaming_session.cpp (1142): emu-server.exe!DSDEVICE_STREAMING_SESSION::CAPTURE_THREAD::thread_run() + 0x23 bytes
>>>>> c:\users\oliver\perforce\non-si\emu\shared\thread_base.cpp (241): emu-server.exe!THREAD_BASE::thread_func() + 0xE bytes
>>>>> c:\program files (x86)\microsoft visual studio\2017\community\vc\tools\msvc\14.16.27023\include\type_traits (16707566): emu-server.exe!std::_Invoker_functor::_Call<int (__cdecl*)(void *),void *>() + 0x2B bytes
>>>>> c:\program files (x86)\microsoft visual studio\2017\community\vc\tools\msvc\14.16.27023\include\type_traits (16707566): emu-server.exe!std::invoke<int (__cdecl*)(void *),void *>() + 0x31 bytes
>>>>> c:\program files (x86)\microsoft visual studio\2017\community\vc\tools\msvc\14.16.27023\include\thr\xthread (239): emu-server.exe!std::_LaunchPad<std::unique_ptr<std::tuple<int (__cdecl*)(void *),void *>,std::default_delete<std::tuple<int (__cdecl*)(void *),void *> > > >::_Execute<0,1>()
>>>>> c:\program files (x86)\microsoft visual studio\2017\community\vc\tools\msvc\14.16.27023\include\thr\xthread (245): emu-server.exe!std::_LaunchPad<std::unique_ptr<std::tuple<int (__cdecl*)(void *),void *>,std::default_delete<std::tuple<int (__cdecl*)(void *),void *> > > >::_Run() + 0x19 bytes
>>>>> c:\program files (x86)\microsoft visual studio\2017\community\vc\tools\msvc\14.16.27023\include\thr\xthread (231): emu-server.exe!std::_LaunchPad<std::unique_ptr<std::tuple<int (__cdecl*)(void *),void *>,std::default_delete<std::tuple<int (__cdecl*)(void *),void *> > > >::_Go()
>>>>> c:\program files (x86)\microsoft visual studio\2017\community\vc\tools\msvc\14.16.27023\include\thr\xthread (209): emu-server.exe!std::_Pad::_Call_func()
>>>>> ucrtbased.dll!register_onexit_function() + 0x4A8 bytes
>>>>> ucrtbased.dll!register_onexit_function() + 0xE1 bytes
>>>>> KERNEL32.DLL!BaseThreadInitThunk() + 0x14 bytes
>>>>> ntdll.dll!RtlUserThreadStart() + 0x21 bytes
>>>>> Data:
>>>>> 70 0F 24 74 46 02 00 00 ED ED ED ED ED ED ED ED p.$tF... ........
>>>>> 36 DE C8 49 F7 7F 00 00 68 F0 CA 49 F7 7F 00 00 6..I.... h..I....
>>>>> 8D 99 CA 49 F7 7F 00 00 1F D6 C9 49 F7 7F 00 00 ...I.... ...I....
>>>>> C9 9E CA 49 F7 7F 00 00 B7 FD C8 49 F7 7F 00 00 ...I.... ...I....
>>>>> 22 EC C9 49 F7 7F 00 00 7E E1 C8 49 F7 7F 00 00 "..I.... ~..I....
>>>>> 3B 82 CA 49 F7 7F 00 00 CD CD CD CD CD CD CD CD ;..I.... ........
>>>>> CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD ........ ........
>>>>> CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD ........ ........
>>>>> CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD ........ ........
>>>>> CD CD CD CD CD CD CD ........ ........
>>>>>
>>>>>
>>>>> ---------- Block 26879 at 0x0000000074242E10: 151 bytes ----------
>>>>> Leak Hash: 0xA886255F, Count: 1, Total 151 bytes
>>>>> Call Stack (TID 55752):
>>>>> ucrtbased.dll!aligned_malloc()
>>>>> c:\ffmpeg\source\ffmpeg\libavutil\mem.c (90): emu-server.exe!av_malloc() + 0x10 bytes
>>>>> c:\ffmpeg\source\ffmpeg\libavdevice\dshow_pin.c (213): emu-server.exe!libAVPin_Setup() + 0xA bytes
>>>>> c:\ffmpeg\source\ffmpeg\libavdevice\dshow_pin.c (252): emu-server.exe!libAVPin_Create() + 0x9B bytes
>>>>> c:\ffmpeg\source\ffmpeg\libavdevice\dshow_filter.c (184): emu-server.exe!libAVFilter_Setup() + 0xA bytes
>>>>> c:\ffmpeg\source\ffmpeg\libavdevice\dshow_filter.c (198): emu-server.exe!libAVFilter_Create() + 0xA8 bytes
>>>>> c:\ffmpeg\source\ffmpeg\libavdevice\dshow.c (809): emu-server.exe!dshow_open_device() + 0x1C bytes
>>>>> c:\ffmpeg\source\ffmpeg\libavdevice\dshow.c (1157): emu-server.exe!dshow_read_header() + 0x1E bytes
>>>>> c:\ffmpeg\source\ffmpeg\libavformat\utils.c (631): emu-server.exe!avformat_open_input() + 0x11 bytes
>>>>> c:\users\oliver\perforce\non-si\emu\shared\dsdevice_streaming_session.cpp (1142): emu-server.exe!DSDEVICE_STREAMING_SESSION::CAPTURE_THREAD::thread_run() + 0x23 bytes
>>>>> c:\users\oliver\perforce\non-si\emu\shared\thread_base.cpp (241): emu-server.exe!THREAD_BASE::thread_func() + 0xE bytes
>>>>> c:\program files (x86)\microsoft visual studio\2017\community\vc\tools\msvc\14.16.27023\include\type_traits (16707566): emu-server.exe!std::_Invoker_functor::_Call<int (__cdecl*)(void *),void *>() + 0x2B bytes
>>>>> c:\program files (x86)\microsoft visual studio\2017\community\vc\tools\msvc\14.16.27023\include\type_traits (16707566): emu-server.exe!std::invoke<int (__cdecl*)(void *),void *>() + 0x31 bytes
>>>>> c:\program files (x86)\microsoft visual studio\2017\community\vc\tools\msvc\14.16.27023\include\thr\xthread (239): emu-server.exe!std::_LaunchPad<std::unique_ptr<std::tuple<int (__cdecl*)(void *),void *>,std::default_delete<std::tuple<int (__cdecl*)(void *),void *> > > >::_Execute<0,1>()
>>>>> c:\program files (x86)\microsoft visual studio\2017\community\vc\tools\msvc\14.16.27023\include\thr\xthread (245): emu-server.exe!std::_LaunchPad<std::unique_ptr<std::tuple<int (__cdecl*)(void *),void *>,std::default_delete<std::tuple<int (__cdecl*)(void *),void *> > > >::_Run() + 0x19 bytes
>>>>> c:\program files (x86)\microsoft visual studio\2017\community\vc\tools\msvc\14.16.27023\include\thr\xthread (231): emu-server.exe!std::_LaunchPad<std::unique_ptr<std::tuple<int (__cdecl*)(void *),void *>,std::default_delete<std::tuple<int (__cdecl*)(void *),void *> > > >::_Go()
>>>>> c:\program files (x86)\microsoft visual studio\2017\community\vc\tools\msvc\14.16.27023\include\thr\xthread (209): emu-server.exe!std::_Pad::_Call_func()
>>>>> ucrtbased.dll!register_onexit_function() + 0x4A8 bytes
>>>>> ucrtbased.dll!register_onexit_function() + 0xE1 bytes
>>>>> KERNEL32.DLL!BaseThreadInitThunk() + 0x14 bytes
>>>>> ntdll.dll!RtlUserThreadStart() + 0x21 bytes
>>>>> Data:
>>>>> CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD ........ ........
>>>>> CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD ........ ........
>>>>> 10 2E 24 74 46 02 00 00 ED ED ED ED ED ED ED ED ..$tF... ........
>>>>> 36 DE C8 49 F7 7F 00 00 68 F0 CA 49 F7 7F 00 00 6..I.... h..I....
>>>>> 8D 99 CA 49 F7 7F 00 00 1F D6 C9 49 F7 7F 00 00 ...I.... ...I....
>>>>> C9 9E CA 49 F7 7F 00 00 B7 FD C8 49 F7 7F 00 00 ...I.... ...I....
>>>>> 22 EC C9 49 F7 7F 00 00 7E E1 C8 49 F7 7F 00 00 "..I.... ~..I....
>>>>> 3B 82 CA 49 F7 7F 00 00 CD CD CD CD CD CD CD CD ;..I.... ........
>>>>> CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD ........ ........
>>>>> CD CD CD CD CD CD CD ........ ........
>>>>
>>>> Does the attached (untested) patch fix these two for you?
>>>
>>> Yes it does, thank you.
>>>
>>> I've worked through the others, and here is a patch that fixes them.
>>>
>>> ======
>>>
>>> diff --git a/libavdevice/dshow.c b/libavdevice/dshow.c
>>> index 25481580af..ac05ab6cdb 100644
>>> --- a/libavdevice/dshow.c
>>> +++ b/libavdevice/dshow.c
>>> @@ -278,12 +278,12 @@ dshow_cycle_devices(AVFormatContext *avctx, ICreateDevEnum *devenum,
>>> goto fail1;
>>> }
>>> *device_unique_name = unique_name;
>>> + unique_name = NULL;
>>> // success, loop will end now
>>> }
>>> } else {
>>> av_log(avctx, AV_LOG_INFO, " \"%s\"\n", friendly_name);
>>> av_log(avctx, AV_LOG_INFO, " Alternative name \"%s\"\n", unique_name);
>>> - av_free(unique_name);
>>> }
>>>
>>> fail1:
>>> @@ -291,8 +291,9 @@ fail1:
>>> IMalloc_Free(co_malloc, olestr);
>>> if (bind_ctx)
>>> IBindCtx_Release(bind_ctx);
>>> - av_free(friendly_name);
>>> - if (bag)
>>> + av_freep(&friendly_name);
>>> + av_freep(&unique_name);
>>> + if (bag)
>>> IPropertyBag_Release(bag);
>>> IMoniker_Release(m);
>>> }
>>> @@ -941,6 +942,8 @@ dshow_add_device(AVFormatContext *avctx,
>>> AVStream *st;
>>> int ret = AVERROR(EIO);
>>>
>>> + type.pbFormat = NULL;
>>> +
>>> st = avformat_new_stream(avctx, NULL);
>>> if (!st) {
>>> ret = AVERROR(ENOMEM);
>>> @@ -989,7 +992,8 @@ dshow_add_device(AVFormatContext *avctx,
>>> if (par->codec_id == AV_CODEC_ID_NONE) {
>>> av_log(avctx, AV_LOG_ERROR, "Unknown compression type. "
>>> "Please report type 0x%X.\n", (int) bih->biCompression);
>>> - return AVERROR_PATCHWELCOME;
>>> + ret = AVERROR_PATCHWELCOME;
>>> + goto error;
>>> }
>>> par->bits_per_coded_sample = bih->biBitCount;
>>> } else {
>>> @@ -1030,6 +1034,8 @@ dshow_add_device(AVFormatContext *avctx,
>>> ret = 0;
>>>
>>> error:
>>> +. if (type.pbFormat)
>>> +. CoTaskMemFree(type.pbFormat);
>>> return ret;
>>> }
>>>
>>> diff --git a/libavdevice/dshow_pin.c b/libavdevice/dshow_pin.c
>>> index 664246da92..12e508bf01 100644
>>> --- a/libavdevice/dshow_pin.c
>>> +++ b/libavdevice/dshow_pin.c
>>> @@ -249,8 +249,20 @@ libAVPin_Setup(libAVPin *this, libAVFilter *filter)
>>>
>>> return 1;
>>> }
>>> +
>>> +static void
>>> +libAVPin_Free(libAVPin *this)
>>> +{
>>> + if (!this)
>>> + return;
>>> + av_freep(&this->imemvtbl);
>>> + if (this->type.pbFormat) {
>>> + CoTaskMemFree(this->type.pbFormat);
>>> + this->type.pbFormat = NULL;
>>> + }
>>> +}
>>> DECLARE_CREATE(libAVPin, libAVPin_Setup(this, filter), libAVFilter *filter)
>>> -DECLARE_DESTROY(libAVPin, nothing)
>>> +DECLARE_DESTROY(libAVPin, libAVPin_Free)
>>>
>>> /*****************************************************************************
>>> * libAVMemInputPin
>>
>> Here is an updated version with the formatting fixed.
>>
>
> Version created using git format-patch.
It seems to be a git diff output only. Or did you mean to attach a git
format-patch version that didn't go through?
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