New submission from Kyle <[email protected]>: I get a segfault whenever I try to access flv files that have avc1/h264 video. This began with the commit that had the following change: "flvdec: read index stored in the 'keyframes' tag."
kyle@ATHLONII-2100:/usr/src/libav$ gdb ffprobe_g GNU gdb (GDB) 7.2-ubuntu Copyright (C) 2010 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-linux-gnu". For bug reporting instructions, please see: <http://www.gnu.org/software/gdb/bugs/>... Reading symbols from /usr/src/libav/ffprobe_g...done. (gdb) r "/home/kyle/Videos/Degrassi/1041 - Chasing Pavements, Part 1 (4).flv" Starting program: /usr/src/libav/ffprobe_g "/home/kyle/Videos/Degrassi/1041 - Chasing Pavements, Part 1 (4).flv" [Thread debugging using libthread_db enabled] FFprobe version git-faa6f1c, Copyright (c) 2007-2011 the Libav developers built on Mar 18 2011 20:15:11 with gcc 4.4.5 configuration: --prefix=/usr --enable-gpl --enable-version3 --enable-nonfree --enable-shared --enable-postproc --enable-libx264 --enable-frei0r --enable-librtmp --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libdc1394 --enable-libmp3lame --enable-libtheora --enable-libopenjpeg --enable-libdirac --enable-libvpx --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libvorbis --enable-libxvid --enable-libfaac --cpu=amdfam10 --arch=x86_64 --enable-x11grab --enable-libxavs --enable-libnut libavutil 50. 39. 0 / 50. 39. 0 libavcodec 52.114. 0 / 52.117. 0 libavformat 52.103. 0 / 52.104. 0 libavdevice 52. 2. 3 / 52. 4. 0 libavfilter 1. 76. 0 / 1. 77. 0 libswscale 0. 12. 0 / 0. 12. 0 libpostproc 51. 2. 0 / 51. 2. 0 Program received signal SIGSEGV, Segmentation fault. 0x00007ffff76f3929 in amf_parse_object (s=0x61d360, astream=<value optimized out>, vstream=0x0, key=0x0, max_pos=518, depth=<value optimized out>) at libavformat/flvdec.c:214 214 if (!strcmp(KEYFRAMES_TAG, key) && depth == 1) (gdb) bt #0 0x00007ffff76f3929 in amf_parse_object (s=0x61d360, astream=<value optimized out>, vstream=0x0, key=0x0, max_pos=518, depth=<value optimized out>) at libavformat/flvdec.c:214 #1 0x00007ffff76f365c in amf_parse_object (s=0x61d360, astream=<value optimized out>, vstream=<value optimized out>, key=<value optimized out>, max_pos=518, depth=<value optimized out>) at libavformat/flvdec.c:246 #2 0x00007ffff76f380e in amf_parse_object (s=0x61d360, astream=<value optimized out>, vstream=0x61e3c0, key=<value optimized out>, max_pos=518, depth=<value optimized out>) at libavformat/flvdec.c:235 #3 0x00007ffff76f482e in flv_read_metabody (s=0x61d360, pkt=<value optimized out>) at libavformat/flvdec.c:304 #4 flv_read_packet (s=0x61d360, pkt=<value optimized out>) at libavformat/flvdec.c:403 #5 0x00007ffff776250f in av_read_packet (s=0x61d360, pkt=0x7fffffffdc10) at libavformat/utils.c:705 #6 0x00007ffff7763c99 in av_read_frame_internal (s=0x61d360, pkt=0x7fffffffdeb0) at libavformat/utils.c:1151 #7 0x00007ffff77649d0 in av_find_stream_info (ic=0x61d360) at libavformat/utils.c:2313 #8 0x0000000000402a7f in open_input_file (argc=<value optimized out>, argv=<value optimized out>) at ffprobe.c:275 #9 probe_file (argc=<value optimized out>, argv=<value optimized out>) at ffprobe.c:305 #10 main (argc=<value optimized out>, argv=<value optimized out>) at ffprobe.c:407 (gdb) info all-registers rax 0x7ffff76f3918 140737344649496 rbx 0x625370 6443888 rcx 0xa 10 rdx 0xfffffffffff77c08 -558072 rsi 0x7ffff777bc62 140737345207394 rdi 0x0 0 rbp 0x61d360 0x61d360 rsp 0x7fffffffd1f0 0x7fffffffd1f0 r8 0x206 518 r9 0x2 2 r10 0x2 2 r11 0x53 83 r12 0x206 518 r13 0x3 3 r14 0x0 0 r15 0x0 0 rip 0x7ffff76f3929 0x7ffff76f3929 <amf_parse_object+937> eflags 0x10297 [ CF PF AF SF IF RF ] cs 0x33 51 ss 0x2b 43 ds 0x0 0 es 0x0 0 fs 0x0 0 gs 0x0 0 st0 -nan(0x000000033) (raw 0xffff0000000000000033) st1 -nan(0x00000000d) (raw 0xffff000000000000000d) st2 -inf (raw 0xffff0000000000000000) st3 -nan(0x10000000000000) (raw 0xffff0010000000000000) st4 0 (raw 0x00000000000000000000) st5 0 (raw 0x00000000000000000000) st6 -nan(0x5888000000000000) (raw 0xffff5888000000000000) st7 -nan(0x000000002) (raw 0xffff0000000000000002) fctrl 0x37f 895 fstat 0x0 0 ftag 0xffff 65535 fiseg 0x0 0 fioff 0x0 0 foseg 0x0 0 fooff 0x0 0 fop 0x0 0 xmm0 {v4_float = {0x0, 0x0, 0x0, 0x0}, v2_double = {0x0, 0x0}, v16_int8 = {0x0 <repeats 11 times>, 0xff, 0x0, 0x0, 0x0, 0x0}, v8_int16 = { 0x0, 0x0, 0x0, 0x0, 0x0, 0xff00, 0x0, 0x0}, v4_int32 = {0x0, 0x0, 0xff000000, 0x0}, v2_int64 = {0x0, 0xff000000}, uint128 = 0x00000000ff0000000000000000000000} xmm1 {v4_float = {0x0, 0x2, 0x0, 0x0}, v2_double = {0x2, 0x0}, v16_int8 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x40, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v8_int16 = {0x0, 0x0, 0x0, 0x4000, 0x0, 0x0, 0x0, 0x0}, v4_int32 = {0x0, 0x40000000, 0x0, 0x0}, v2_int64 = { 0x4000000000000000, 0x0}, uint128 = 0x00000000000000004000000000000000} xmm2 {v4_float = {0x0, 0x0, 0x0, 0x0}, v2_double = {0x0, 0x8000000000000000}, v16_int8 = {0x0, 0xff, 0x0, 0x0, 0x0, 0xff, 0x0, 0x0, 0xff, 0x0, 0x0, 0x0, 0x0, 0x0, 0xff, 0xff}, v8_int16 = {0xff00, 0x0, 0xff00, 0x0, 0xff, 0x0, 0x0, 0xffff}, v4_int32 = {0xff00, 0xff00, 0xff, 0xffff0000}, v2_int64 = {0xff000000ff00, 0xffff0000000000ff}, uint128 = 0xffff0000000000ff0000ff000000ff00} xmm3 {v4_float = {0x0, 0x0, 0x0, 0x0}, v2_double = {0x0, 0x0}, v16_int8 = {0x0, 0x0, 0x0, 0x0, 0x0, 0xff, 0x0, 0x0, 0x0, 0x0, 0xff, 0x0, 0x0, 0x0, 0xff, 0x0}, v8_int16 = {0x0, 0x0, 0xff00, 0x0, 0x0, 0xff, 0x0, 0xff}, v4_int32 = {0x0, 0xff00, 0xff0000, 0xff0000}, v2_int64 = { 0xff0000000000, 0xff000000ff0000}, uint128 = 0x00ff000000ff00000000ff0000000000} xmm4 {v4_float = {0x0, 0x0, 0x0, 0x0}, v2_double = { 0x8000000000000000, 0x8000000000000000}, v16_int8 = {0x5f, 0x73, 0x65, 0x72, 0x76, 0x69, 0x63, 0x65, 0x5f, 0x74, 0x79, 0x70, 0x65, 0x0, 0x61, 0x75}, v8_int16 = {0x735f, 0x7265, 0x6976, 0x6563, 0x745f, 0x7079, 0x65, 0x7561}, v4_int32 = {0x7265735f, 0x65636976, 0x7079745f, 0x75610065}, v2_int64 = {0x656369767265735f, 0x756100657079745f}, uint128 = 0x756100657079745f656369767265735f} xmm5 {v4_float = {0x0, 0x1, 0x0, 0x0}, v2_double = {0x0, 0x0}, v16_int8 = {0x0, 0x0, 0x0, 0xe0, 0x95, 0x9c, 0xe7, 0x3f, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v8_int16 = {0x0, 0xe000, 0x9c95, 0x3fe7, 0x0, 0x0, 0x0, 0x0}, v4_int32 = {0xe0000000, 0x3fe79c95, 0x0, 0x0}, v2_int64 = { 0x3fe79c95e0000000, 0x0}, uint128 = 0x00000000000000003fe79c95e0000000} xmm6 {v4_float = {0x0, 0x1, 0x0, 0x0}, v2_double = {0x1, 0x0}, v16_int8 = {0x6d, 0x7d, 0xbf, 0xbb, 0x27, 0xaf, 0xf5, 0x3f, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v8_int16 = {0x7d6d, 0xbbbf, 0xaf27, 0x3ff5, 0x0, 0x0, 0x0, 0x0}, v4_int32 = {0xbbbf7d6d, 0x3ff5af27, 0x0, 0x0}, v2_int64 = { 0x3ff5af27bbbf7d6d, 0x0}, uint128 = 0x00000000000000003ff5af27bbbf7d6d} xmm7 {v4_float = {0x0, 0x0, 0x0, 0x0}, v2_double = {0x0, 0x0}, v16_int8 = {0x0, 0x0, 0x0, 0x0, 0x68, 0xc8, 0xbc, 0x3b, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v8_int16 = {0x0, 0x0, 0xc868, 0x3bbc, 0x0, 0x0, 0x0, 0x0}, v4_int32 = {0x0, 0x3bbcc868, 0x0, 0x0}, v2_int64 = { 0x3bbcc86800000000, 0x0}, uint128 = 0x00000000000000003bbcc86800000000} xmm8 {v4_float = {0x0, 0xfffffffd, 0x0, 0x0}, v2_double = { 0xffffffffffffffd2, 0x0}, v16_int8 = {0xe0, 0xe6, 0x35, 0x67, 0x9e, 0x6, 0x47, 0xc0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v8_int16 = {0xe6e0, 0x6735, 0x69e, 0xc047, 0x0, 0x0, 0x0, 0x0}, v4_int32 = {0x6735e6e0, 0xc047069e, 0x0, 0x0}, v2_int64 = {0xc047069e6735e6e0, 0x0}, uint128 = 0x0000000000000000c047069e6735e6e0} xmm9 {v4_float = {0x0, 0x1, 0x0, 0x0}, v2_double = {0x1, 0x0}, v16_int8 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xf0, 0x3f, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v8_int16 = {0x0, 0x0, 0x0, 0x3ff0, 0x0, 0x0, 0x0, 0x0}, v4_int32 = {0x0, 0x3ff00000, 0x0, 0x0}, v2_int64 = { 0x3ff0000000000000, 0x0}, uint128 = 0x00000000000000003ff0000000000000} xmm10 {v4_float = {0x0, 0x0, 0x0, 0x0}, v2_double = {0x0, 0x0}, v16_int8 = {0x0, 0x0, 0x46, 0x84, 0x24, 0x59, 0xd6, 0x3e, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v8_int16 = {0x0, 0x8446, 0x5924, 0x3ed6, 0x0, 0x0, 0x0, 0x0}, v4_int32 = {0x84460000, 0x3ed65924, 0x0, 0x0}, v2_int64 = { 0x3ed6592484460000, 0x0}, uint128 = 0x00000000000000003ed6592484460000} xmm11 {v4_float = {0x9689a800, 0x0, 0x0, 0x0}, v2_double = {0x0, 0x0}, v16_int8 = {0x6a, 0xa2, 0x65, 0x50, 0xf2, 0xea, 0x8f, 0xbd, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v8_int16 = {0xa26a, 0x5065, 0xeaf2, 0xbd8f, 0x0, 0x0, 0x0, 0x0}, v4_int32 = {0x5065a26a, 0xbd8feaf2, 0x0, 0x0}, v2_int64 = {0xbd8feaf25065a26a, 0x0}, uint128 = 0x0000000000000000bd8feaf25065a26a} xmm12 {v4_float = {0x0, 0x0, 0x0, 0x0}, v2_double = {0x0, 0x0}, v16_int8 = {0x29, 0xf2, 0x88, 0x6c, 0xa6, 0x49, 0xde, 0x3e, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v8_int16 = {0xf229, 0x6c88, 0x49a6, 0x3ede, 0x0, 0x0, 0x0, 0x0}, v4_int32 = {0x6c88f229, 0x3ede49a6, 0x0, 0x0}, v2_int64 = { 0x3ede49a66c88f229, 0x0}, uint128 = 0x00000000000000003ede49a66c88f229} xmm13 {v4_float = {0x0, 0x0, 0x0, 0x0}, v2_double = {0x0, 0x0}, v16_int8 = {0xb3, 0x12, 0x58, 0x17, 0x64, 0x46, 0xe6, 0x3b, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v8_int16 = {0x12b3, 0x1758, 0x4664, 0x3be6, 0x0, 0x0, 0x0, 0x0}, v4_int32 = {0x175812b3, 0x3be64664, 0x0, 0x0}, v2_int64 = { 0x3be64664175812b3, 0x0}, uint128 = 0x00000000000000003be64664175812b3} xmm14 {v4_float = {0x0, 0x3, 0x0, 0x0}, v2_double = {0x2d, 0x0}, v16_int8 = {0xc0, 0x9, 0xf2, 0x16, 0xb5, 0xdf, 0x46, 0x40, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v8_int16 = {0x9c0, 0x16f2, 0xdfb5, 0x4046, 0x0, 0x0, 0x0, 0x0}, v4_int32 = {0x16f209c0, 0x4046dfb5, 0x0, 0x0}, v2_int64 = { 0x4046dfb516f209c0, 0x0}, uint128 = 0x00000000000000004046dfb516f209c0} xmm15 {v4_float = {0x0, 0x0, 0x0, 0x0}, v2_double = {0x0, 0x0}, v16_int8 = {0x0 <repeats 16 times>}, v8_int16 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v4_int32 = {0x0, 0x0, 0x0, 0x0}, v2_int64 = {0x0, 0x0}, uint128 = 0x00000000000000000000000000000000} mxcsr 0x1fa0 [ PE IM DM ZM OM UM PM ] I was unable to get the "disass $pc-32 $pc+32" output since every time I tried the command I got "A syntax error in expression, near '$pc+32'." File '1041 - Chasing Pavements, Part 1 (4).flv' not attached - you can download it from https://roundup.libav.org/file1376. ---------- files: 1041 - Chasing Pavements, Part 1 (4).flv messages: 13914 priority: normal status: new substatus: new title: segmentation fault when accessing files that use type: bug ______________________________________________ Libav issue tracker <[email protected]> <https://roundup.libav.org/issue2674> ______________________________________________
