Reimar Döffinger <[email protected]> added the comment: On Wed, Jun 03, 2009 at 07:32:41PM +0000, Baptiste Coudurier wrote: > > Baptiste Coudurier <[email protected]> added the comment: > > On 6/3/2009 11:24 AM, Reimar Döffinger wrote: > > Reimar Döffinger <[email protected]> added the comment: > > > > On Mon, Jun 01, 2009 at 09:30:15PM +0000, Baptiste Coudurier wrote: > >> Baptiste Coudurier <[email protected]> added the comment: > >> > >> Attached valgrind output. > > > > Huh? That doesn't show anything really wrong. > > Huh? Did you see all the multiple uinitialized reads ? > Are they really harmless ?
Well, maybe not exactly harmless (though they might be), but they in themselves are almost certainly not the cause of the crash. So let me call them "at least in comparison harmless". Finally valgrind managed to reach the problematic point, these are some of the errors it gives: ==4536== Invalid read of size 1 ==4536== at 0x59E1C0: ff_er_frame_end (error_resilience.c:979) ==4536== by 0x5B7ED0: ff_h263_decode_frame (h263dec.c:705) ==4536== by 0x495ABC: avcodec_decode_video2 (utils.c:577) ==4536== by 0x408276: output_packet (ffmpeg.c:1255) ==4536== by 0x40B4FE: av_encode (ffmpeg.c:2203) ==4536== by 0x40BD1B: main (ffmpeg.c:3958) ==4536== Address 0x5a47de0 is 0 bytes after a block of size 188,944 alloc'd ==4536== at 0x4A065A0: memalign (vg_replace_malloc.c:431) ==4536== by 0x4A0665A: posix_memalign (vg_replace_malloc.c:540) ==4536== by 0x8340F1: av_malloc (mem.c:66) ==4536== by 0x496160: avcodec_default_get_buffer (utils.c:312) ==4536== by 0x4C5605: ff_alloc_picture (mpegvideo.c:195) ==4536== by 0x4C6AB5: MPV_frame_start (mpegvideo.c:920) ==4536== by 0x5B7CA7: ff_h263_decode_frame (h263dec.c:626) ==4536== by 0x495ABC: avcodec_decode_video2 (utils.c:577) ==4536== by 0x408276: output_packet (ffmpeg.c:1255) ==4536== by 0x40B4FE: av_encode (ffmpeg.c:2203) ==4536== by 0x40BD1B: main (ffmpeg.c:3958) ==4536== Invalid write of size 1 ==4536== at 0x59E75A: ff_er_frame_end (error_resilience.c:55) ==4536== by 0x5B7ED0: ff_h263_decode_frame (h263dec.c:705) ==4536== by 0x495ABC: avcodec_decode_video2 (utils.c:577) ==4536== by 0x408276: output_packet (ffmpeg.c:1255) ==4536== by 0x40B4FE: av_encode (ffmpeg.c:2203) ==4536== by 0x40BD1B: main (ffmpeg.c:3958) ==4536== Address 0x5a47de0 is 0 bytes after a block of size 188,944 alloc'd ==4536== at 0x4A065A0: memalign (vg_replace_malloc.c:431) ==4536== by 0x4A0665A: posix_memalign (vg_replace_malloc.c:540) ==4536== by 0x8340F1: av_malloc (mem.c:66) ==4536== by 0x496160: avcodec_default_get_buffer (utils.c:312) ==4536== by 0x4C5605: ff_alloc_picture (mpegvideo.c:195) ==4536== by 0x4C6AB5: MPV_frame_start (mpegvideo.c:920) ==4536== by 0x5B7CA7: ff_h263_decode_frame (h263dec.c:626) ==4536== by 0x495ABC: avcodec_decode_video2 (utils.c:577) ==4536== by 0x408276: output_packet (ffmpeg.c:1255) ==4536== by 0x40B4FE: av_encode (ffmpeg.c:2203) ==4536== by 0x40BD1B: main (ffmpeg.c:3958) ==4536== Invalid read of size 1 ==4536== at 0x59B3C0: h_block_filter (error_resilience.c:225) ==4536== by 0x59EA5D: ff_er_frame_end (error_resilience.c:1030) ==4536== by 0x5B7ED0: ff_h263_decode_frame (h263dec.c:705) ==4536== by 0x495ABC: avcodec_decode_video2 (utils.c:577) ==4536== by 0x408276: output_packet (ffmpeg.c:1255) ==4536== by 0x40B4FE: av_encode (ffmpeg.c:2203) ==4536== by 0x40BD1B: main (ffmpeg.c:3958) ==4536== Address 0x5a47de0 is 0 bytes after a block of size 188,944 alloc'd ==4536== at 0x4A065A0: memalign (vg_replace_malloc.c:431) ==4536== by 0x4A0665A: posix_memalign (vg_replace_malloc.c:540) ==4536== by 0x8340F1: av_malloc (mem.c:66) ==4536== by 0x496160: avcodec_default_get_buffer (utils.c:312) ==4536== by 0x4C5605: ff_alloc_picture (mpegvideo.c:195) ==4536== by 0x4C6AB5: MPV_frame_start (mpegvideo.c:920) ==4536== by 0x5B7CA7: ff_h263_decode_frame (h263dec.c:626) ==4536== by 0x495ABC: avcodec_decode_video2 (utils.c:577) ==4536== by 0x408276: output_packet (ffmpeg.c:1255) ==4536== by 0x40B4FE: av_encode (ffmpeg.c:2203) ==4536== by 0x40BD1B: main (ffmpeg.c:3958) _____________________________________________________ FFmpeg issue tracker <[email protected]> <https://roundup.ffmpeg.org/roundup/ffmpeg/issue1135> _____________________________________________________
