[FFmpeg-trac] #8294(undetermined:new): memory leaks in avpriv_float_dsp_alloc()
FFmpeg
trac at avcodec.org
Thu Oct 17 09:48:53 EEST 2019
#8294: memory leaks in avpriv_float_dsp_alloc()
-------------------------------------+-------------------------------------
Reporter: Suhwan | Type: defect
Status: new | Priority: important
Component: | Version: git-
undetermined | master
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Summary of the bug:
There are memory leaks in avpriv_float_dsp_alloc()
How to reproduce:
{{{
% ffmpeg_g -y -i $PoC -loglevel 0 -psnr tmp.eac3
ffmpeg version N-95425-g1e35519fe0 Copyright (c) 2000-2019 the FFmpeg
developers
built with clang version 6.0.0-1ubuntu2 (tags/RELEASE_600/final)
configuration: --cc=clang --cxx=clang++ --ld=clang --enable-debug
}}}
Here's Valgrind log
{{{
==16402== HEAP SUMMARY:
==16402== in use at exit: 120 bytes in 2 blocks
==16402== total heap usage: 889 allocs, 887 frees, 2,885,023 bytes
allocated
==16402==
==16402== 88 bytes in 1 blocks are definitely lost in loss record 2 of 2
==16402== at 0x9FDFE76: memalign (in /usr/lib/valgrind
/vgpreload_memcheck-amd64-linux.so)
==16402== by 0x9FDFF91: posix_memalign (in /usr/lib/valgrind
/vgpreload_memcheck-amd64-linux.so)
==16402== by 0x592C189: av_malloc (mem.c:87)
==16402== by 0x592C189: av_mallocz (mem.c:238)
==16402== by 0x58FC61E: avpriv_float_dsp_alloc (float_dsp.c:137)
==16402== by 0x44EB76E: ff_ac3_float_encode_init (ac3enc_float.c:135)
==16402== by 0x346DC34: avcodec_open2 (utils.c:946)
==16402== by 0x4A6841: init_output_stream (ffmpeg.c:3507)
==16402== by 0x4BFFE5: reap_filters (ffmpeg.c:1442)
==16402== by 0x48D661: transcode_step (ffmpeg.c:4638)
==16402== by 0x48D661: transcode (ffmpeg.c:4682)
==16402== by 0x487DA3: main (ffmpeg.c:4884)
==16402==
==16402== LEAK SUMMARY:
==16402== definitely lost: 88 bytes in 1 blocks
==16402== indirectly lost: 0 bytes in 0 blocks
==16402== possibly lost: 0 bytes in 0 blocks
==16402== still reachable: 32 bytes in 1 blocks
==16402== suppressed: 0 bytes in 0 blocks
==16402== Reachable blocks (those to which a pointer was found) are not
shown.
==16402== To see them, rerun with: --leak-check=full --show-leak-kinds=all
==16402==
==16402== For counts of detected and suppressed errors, rerun with: -v
==16402== ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 0 from 0)
}}}
ASAN log.
{{{
=================================================================
==33197==ERROR: LeakSanitizer: detected memory leaks
Direct leak of 88 byte(s) in 1 object(s) allocated from:
#0 0x4de9e8 in posix_memalign (ffmpeg_usan+0x4de9e8)
#1 0x85c2178 in av_malloc ffmpeg/libavutil/mem.c:87:9
#2 0x85c2178 in av_mallocz ffmpeg/libavutil/mem.c:238
#3 0x85651c0 in avpriv_float_dsp_alloc
ffmpeg/libavutil/float_dsp.c:137:31
SUMMARY: AddressSanitizer: 88 byte(s) leaked in 1 allocation(s).
}}}
Please confirm.
Thanks
--
Ticket URL: <https://trac.ffmpeg.org/ticket/8294>
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