when libx264 is used along with tcmalloc lib, libx264 lib crashes

[pallaraghu]

Hi,

I am using libx264 lib to encode h264 video.

Code base used is: x264-snapshot-20120303-2245-stable ( http://download.videolan.org/x264/snaps ... le.tar.bz2 )

Compiled the code and used along with libtcmalloc.so.4 in our application.

Linux: RHEL 7.1

I am getting crash and seeing the following BT.

Program received signal SIGSEGV, Segmentation fault.
x264_macroblock_cache_load (b_mbaff=0, mb_y=48201728, mb_x=0, h=0x1536008) at common/macroblock.c:1074
1074 M128( h->mb.cache.mv[l][i8] ) = M128_ZERO;
Missing separate debuginfos, use: debuginfo-install glibc-2.17-78.el7.x86_64 libgcc-4.8.3-9.el7.x86_64 libstdc++-4.8.3-9.el7.x86_64 xz-libs-5.1.2-9alpha.el7.x86_64 zlib-1.2.7-13.el7.x86_64
(gdb) bt
#0 x264_macroblock_cache_load (b_mbaff=0, mb_y=48201728, mb_x=0, h=0x1536008) at common/macroblock.c:1074
#1 x264_macroblock_cache_load_progressive (h=h@entry=0x1536008, mb_x=mb_x@entry=0, mb_y=mb_y@entry=0) at common/macroblock.c:1360
#2 0x00007ffff73ed6a1 in x264_slice_write (h=h@entry=0x1536008) at encoder/encoder.c:2171
#3 0x00007ffff73ee1cc in x264_slices_write (h=h@entry=0x1536008) at encoder/encoder.c:2474
#4 0x00007ffff73f2d9b in x264_encoder_encode (h=0x1536008, pp_nal=0x7fffffffdca0, pi_nal=0x7fffffffdca8, pic_in=<optimized out>,
pic_out=0x7fffffffdbe0) at encoder/encoder.c:3059


It crashed at this line in common/macroblock.c file.
>>>>>> M128( h->mb.cache.mv[l][i8] ) = M128_ZERO; ------> this line is crashing.

Anyone faced this issue earlier ? And is it anything do with the options used while building libX264 ?
Any relation with __m128 and tcmalloc compatibility issue as the issue is coming when libtcmalloc is used.

Can some one help on this ?

Thanks & Regards,
Raghavender Palla

[Jean-Baptiste Kempf]

You should mail the x264-devel mailing list

[pallaraghu]

Thank you Jean-Baptiste Kempf.
I sent mail to x264-devel mailing list.

Yet to get reply.

Thanks & Regards,
Raghavender.