[FFmpeg-trac] #2919(undetermined:new): png: invalid write 2
FFmpeg
trac at avcodec.org
Fri Aug 30 21:09:14 CEST 2013
#2919: png: invalid write 2
-------------------------------------+-------------------------------------
Reporter: ami_stuff | Owner:
Type: defect | Status: new
Priority: normal | Component:
Version: | undetermined
unspecified | Keywords:
Blocked By: | Blocking:
Reproduced by developer: 0 | Analyzed by developer: 0
-------------------------------------+-------------------------------------
{{{
knoppix at Microknoppix:/media/sdb1$ valgrind --leak-check=full ffmpeg-
HEAD-c042684/ffmpeg_g -i ./png_fuzz2.mov -f null -
==2886== Memcheck, a memory error detector
==2886== Copyright (C) 2002-2011, and GNU GPL'd, by Julian Seward et al.
==2886== Using Valgrind-3.7.0 and LibVEX; rerun with -h for copyright info
==2886== Command: ffmpeg-HEAD-c042684/ffmpeg_g -i ./png_fuzz2.mov -f null
-
==2886==
ffmpeg version 2.0-c042684 Copyright (c) 2000-2013 the FFmpeg developers
built on Aug 30 2013 20:55:53 with gcc 4.7 (Debian 4.7.2-5)
configuration: --disable-yasm --disable-ffprobe --disable-ffserver
--enable-gpl
libavutil 52. 42.100 / 52. 42.100
libavcodec 55. 29.100 / 55. 29.100
libavformat 55. 15.100 / 55. 15.100
libavdevice 55. 3.100 / 55. 3.100
libavfilter 3. 82.102 / 3. 82.102
libswscale 2. 5.100 / 2. 5.100
libswresample 0. 17.103 / 0. 17.103
libpostproc 52. 3.100 / 52. 3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from './png_fuzz2.mov':
Metadata:
major_brand : qt
minor_version : 537199360
compatible_brands: qt
creation_time : 2012-03-24 20:40:58
Duration: 00:00:05.96, start: 0.000000, bitrate: 567 kb/s
Stream #0:0(eng): Video: png (png / 0x20676E70), monob, 189x127 [SAR
2834:2834 DAR 189:127], 565 kb/s, 24 fps, 24 tbr, 1000k tbn, 1000k tbc
(default)
Metadata:
creation_time : 2012-03-24 20:40:58
handler_name : Procedura obs�ugi skr�t�w danych Apple
Output #0, null, to 'pipe:':
Metadata:
major_brand : qt
minor_version : 537199360
compatible_brands: qt
encoder : Lavf55.15.100
Stream #0:0(eng): Video: rawvideo (B0W1 / 0x31573042), monob, 189x127
[SAR 1:1 DAR 189:127], q=2-31, 200 kb/s, 90k tbn, 24 tbc (default)
Metadata:
creation_time : 2012-03-24 20:40:58
handler_name : Procedura obs�ugi skr�t�w danych Apple
Stream mapping:
Stream #0:0 -> #0:0 (png -> rawvideo)
Press [q] to stop, [?] for help
[null @ 0x424b6c0] Encoder did not produce proper pts, making some up.
[png @ 0x431fd00] IDAT without IHDR
[png @ 0x43263a0] inflate returned error -3
[png @ 0x431e2a0] inflate returned error -3
[png @ 0x4320e20] IDAT without IHDR
[png @ 0x431ec00] inflate returned error -3
[png @ 0x4323060] inflate returned error -3
[png @ 0x4324160] Missing png signature
Error while decoding stream #0:0: Invalid data found when processing input
Error while decoding stream #0:0: Invalid data found when processing input
Error while decoding stream #0:0: Invalid data found when processing input
[png @ 0x4325280] inflate returned error -3
[png @ 0x43263a0] inflate returned error -3
[png @ 0x431e2a0] inflate returned error -3
[png @ 0x431ec00] inflate returned error -3
Error while decoding stream #0:0: Invalid data found when processing input
Error while decoding stream #0:0: Invalid data found when processing input
[png @ 0x431fd00] unsupported bit depth 9 and color type 0
Error while decoding stream #0:0: Invalid data found when processing input
[png @ 0x4320e20] chunk too big
Error while decoding stream #0:0: Invalid data found when processing input
Error while decoding stream #0:0: Invalid data found when processing input
Error while decoding stream #0:0: Invalid data found when processing input
Error while decoding stream #0:0: Invalid data found when processing input
Error while decoding stream #0:0: Invalid data found when processing input
[png @ 0x4321f40] inflate returned error -3
[png @ 0x4324160] inflate returned error -3
[png @ 0x43263a0] IEND without all image
[png @ 0x4325280] inflate returned error -3
[png @ 0x4323060] inflate returned error -3
[png @ 0x431e2a0] inflate returned error -3
Error while decoding stream #0:0: Invalid data found when processing input
Error while decoding stream #0:0: Invalid data found when processing input
Error while decoding stream #0:0: Invalid data found when processing input
Error while decoding stream #0:0: Invalid data found when processing input
Error while decoding stream #0:0: Invalid data found when processing input
==2886== Thread 16:
==2886== Invalid read of size 4
==2886== at 0x85C065A: add_bytes_l2_c (pngdsp.c:34)
==2886== by 0x85BF6DA: decode_frame (pngdec.c:332)
==2886== by 0x85CC62D: frame_worker_thread (pthread.c:339)
==2886== by 0x407B953: start_thread (pthread_create.c:304)
==2886== by 0x416395D: clone (clone.S:130)
==2886== Address 0x436b828 is 72 bytes inside a block of size 74 alloc'd
==2886== at 0x40268A4: memalign (vg_replace_malloc.c:694)
==2886== by 0x402695E: posix_memalign (vg_replace_malloc.c:835)
==2886== by 0x886C6B7: av_mallocz (mem.c:93)
==2886== by 0x8673922: av_fast_padded_mallocz (utils.c:92)
==2886== by 0x85BF08A: decode_frame (pngdec.c:674)
==2886== by 0x85CC62D: frame_worker_thread (pthread.c:339)
==2886== by 0x407B953: start_thread (pthread_create.c:304)
==2886== by 0x416395D: clone (clone.S:130)
==2886==
==2886== Invalid read of size 4
==2886== at 0x85C0634: add_bytes_l2_c (pngdsp.c:35)
==2886== by 0x85BF6DA: decode_frame (pngdec.c:332)
==2886== by 0x85CC62D: frame_worker_thread (pthread.c:339)
==2886== by 0x407B953: start_thread (pthread_create.c:304)
==2886== by 0x416395D: clone (clone.S:130)
==2886== Address 0x436b9d8 is 88 bytes inside a block of size 91 alloc'd
==2886== at 0x40268A4: memalign (vg_replace_malloc.c:694)
==2886== by 0x402695E: posix_memalign (vg_replace_malloc.c:835)
==2886== by 0x886C6B7: av_mallocz (mem.c:93)
==2886== by 0x867386A: av_fast_padded_malloc (utils.c:92)
==2886== by 0x85BF0D2: decode_frame (pngdec.c:684)
==2886== by 0x85CC62D: frame_worker_thread (pthread.c:339)
==2886== by 0x407B953: start_thread (pthread_create.c:304)
==2886== by 0x416395D: clone (clone.S:130)
==2886==
==2886== Invalid write of size 4
==2886== at 0x85C0651: add_bytes_l2_c (pngdsp.c:37)
==2886== by 0x85BF6DA: decode_frame (pngdec.c:332)
==2886== by 0x85CC62D: frame_worker_thread (pthread.c:339)
==2886== by 0x407B953: start_thread (pthread_create.c:304)
==2886== by 0x416395D: clone (clone.S:130)
==2886== Address 0x436b908 is 72 bytes inside a block of size 74 alloc'd
==2886== at 0x40268A4: memalign (vg_replace_malloc.c:694)
==2886== by 0x402695E: posix_memalign (vg_replace_malloc.c:835)
==2886== by 0x886C6B7: av_mallocz (mem.c:93)
==2886== by 0x867386A: av_fast_padded_malloc (utils.c:92)
==2886== by 0x85BFF60: decode_frame (pngdec.c:679)
==2886== by 0x85CC62D: frame_worker_thread (pthread.c:339)
==2886== by 0x407B953: start_thread (pthread_create.c:304)
==2886== by 0x416395D: clone (clone.S:130)
==2886==
==2886== Invalid read of size 4
==2886== at 0x85C0630: add_bytes_l2_c (pngdsp.c:36)
==2886== by 0x85BF6DA: decode_frame (pngdec.c:332)
==2886== by 0x85CC62D: frame_worker_thread (pthread.c:339)
==2886== by 0x407B953: start_thread (pthread_create.c:304)
==2886== by 0x416395D: clone (clone.S:130)
==2886== Address 0x436b82c is 2 bytes after a block of size 74 alloc'd
==2886== at 0x40268A4: memalign (vg_replace_malloc.c:694)
==2886== by 0x402695E: posix_memalign (vg_replace_malloc.c:835)
==2886== by 0x886C6B7: av_mallocz (mem.c:93)
==2886== by 0x8673922: av_fast_padded_mallocz (utils.c:92)
==2886== by 0x85BF08A: decode_frame (pngdec.c:674)
==2886== by 0x85CC62D: frame_worker_thread (pthread.c:339)
==2886== by 0x407B953: start_thread (pthread_create.c:304)
==2886== by 0x416395D: clone (clone.S:130)
==2886==
==2886==
==2886== Process terminating with default action of signal 11 (SIGSEGV)
==2886== Bad permissions for mapped region at address 0x4617000
==2886== at 0x85C0634: add_bytes_l2_c (pngdsp.c:35)
==2886== by 0x85BF6DA: decode_frame (pngdec.c:332)
==2886== by 0x85CC62D: frame_worker_thread (pthread.c:339)
==2886== by 0x407B953: start_thread (pthread_create.c:304)
==2886== by 0x416395D: clone (clone.S:130)
==2886==
==2886== HEAP SUMMARY:
==2886== in use at exit: 240,017 bytes in 341 blocks
==2886== total heap usage: 2,259 allocs, 1,918 frees, 1,926,025 bytes
allocated
==2886==
==2886== Thread 1:
==2886== 72 bytes in 9 blocks are definitely lost in loss record 81 of 137
==2886== at 0x40268A4: memalign (vg_replace_malloc.c:694)
==2886== by 0x402695E: posix_memalign (vg_replace_malloc.c:835)
==2886== by 0x886C447: av_malloc (mem.c:93)
==2886== by 0x885EBC8: av_buffer_alloc (buffer.c:70)
==2886== by 0x85CDD77: ff_thread_get_buffer (pthread.c:944)
==2886== by 0x85BEFFE: decode_frame (pngdec.c:648)
==2886== by 0x85CC62D: frame_worker_thread (pthread.c:339)
==2886== by 0x407B953: start_thread (pthread_create.c:304)
==2886== by 0x416395D: clone (clone.S:130)
==2886==
==2886== 180 bytes in 9 blocks are definitely lost in loss record 99 of
137
==2886== at 0x40268A4: memalign (vg_replace_malloc.c:694)
==2886== by 0x402695E: posix_memalign (vg_replace_malloc.c:835)
==2886== by 0x886C6B7: av_mallocz (mem.c:93)
==2886== by 0x885F410: av_buffer_pool_get (buffer.c:309)
==2886== by 0x86731F5: video_get_buffer (utils.c:575)
==2886== by 0x8674B00: get_buffer_internal (utils.c:865)
==2886== by 0x8675093: ff_get_buffer (utils.c:877)
==2886== by 0x85CDEA1: ff_thread_get_buffer (pthread.c:962)
==2886== by 0x85BEFFE: decode_frame (pngdec.c:648)
==2886== by 0x85CC62D: frame_worker_thread (pthread.c:339)
==2886== by 0x407B953: start_thread (pthread_create.c:304)
==2886== by 0x416395D: clone (clone.S:130)
==2886==
==2886== 210 (40 direct, 170 indirect) bytes in 5 blocks are definitely
lost in loss record 101 of 137
==2886== at 0x4028308: malloc (vg_replace_malloc.c:263)
==2886== by 0x402849F: realloc (vg_replace_malloc.c:632)
==2886== by 0x886231F: av_dict_set (dict.c:81)
==2886== by 0x85BEA96: decode_text_chunk.isra.4 (pngdec.c:503)
==2886== by 0x85BF1FC: decode_frame (pngdec.c:736)
==2886== by 0x85CC62D: frame_worker_thread (pthread.c:339)
==2886== by 0x407B953: start_thread (pthread_create.c:304)
==2886== by 0x416395D: clone (clone.S:130)
==2886==
==2886== 216 bytes in 9 blocks are definitely lost in loss record 102 of
137
==2886== at 0x40268A4: memalign (vg_replace_malloc.c:694)
==2886== by 0x402695E: posix_memalign (vg_replace_malloc.c:835)
==2886== by 0x886C6B7: av_mallocz (mem.c:93)
==2886== by 0x885F27E: av_buffer_realloc (buffer.c:34)
==2886== by 0x827A122: av_grow_packet (avpacket.c:73)
==2886== by 0x8235973: append_packet_chunked (utils.c:157)
==2886== by 0x81A066D: mov_read_packet (mov.c:3472)
==2886== by 0x8236816: ff_read_packet (utils.c:651)
==2886== by 0x8239178: read_frame_internal (utils.c:1307)
==2886== by 0x8239DB9: av_read_frame (utils.c:1411)
==2886== by 0x80B6BD5: process_input (ffmpeg.c:2874)
==2886== by 0x80A2E32: main (ffmpeg.c:3181)
==2886==
==2886== 216 bytes in 9 blocks are definitely lost in loss record 103 of
137
==2886== at 0x40268A4: memalign (vg_replace_malloc.c:694)
==2886== by 0x402695E: posix_memalign (vg_replace_malloc.c:835)
==2886== by 0x886C6B7: av_mallocz (mem.c:93)
==2886== by 0x885EBE6: av_buffer_alloc (buffer.c:34)
==2886== by 0x85CDD77: ff_thread_get_buffer (pthread.c:944)
==2886== by 0x85BEFFE: decode_frame (pngdec.c:648)
==2886== by 0x85CC62D: frame_worker_thread (pthread.c:339)
==2886== by 0x407B953: start_thread (pthread_create.c:304)
==2886== by 0x416395D: clone (clone.S:130)
==2886==
==2886== 216 bytes in 9 blocks are definitely lost in loss record 104 of
137
==2886== at 0x40268A4: memalign (vg_replace_malloc.c:694)
==2886== by 0x402695E: posix_memalign (vg_replace_malloc.c:835)
==2886== by 0x886C6B7: av_mallocz (mem.c:93)
==2886== by 0x885F53C: av_buffer_pool_get (buffer.c:34)
==2886== by 0x86731F5: video_get_buffer (utils.c:575)
==2886== by 0x8674B00: get_buffer_internal (utils.c:865)
==2886== by 0x8675093: ff_get_buffer (utils.c:877)
==2886== by 0x85CDEA1: ff_thread_get_buffer (pthread.c:962)
==2886== by 0x85BEFFE: decode_frame (pngdec.c:648)
==2886== by 0x85CC62D: frame_worker_thread (pthread.c:339)
==2886== by 0x407B953: start_thread (pthread_create.c:304)
==2886== by 0x416395D: clone (clone.S:130)
==2886==
==2886== 1,296 bytes in 9 blocks are possibly lost in loss record 122 of
137
==2886== at 0x4026A68: calloc (vg_replace_malloc.c:566)
==2886== by 0x40111FB: _dl_allocate_tls (dl-tls.c:300)
==2886== by 0x407C2A8: pthread_create@@GLIBC_2.1 (allocatestack.c:580)
==2886== by 0x85CE5AE: ff_thread_init (pthread.c:872)
==2886== by 0x867AF8D: avcodec_open2 (utils.c:1223)
==2886== by 0x80B9F46: transcode_init (ffmpeg.c:1983)
==2886== by 0x80A242F: main (ffmpeg.c:3204)
==2886==
==2886== 1,296 bytes in 9 blocks are possibly lost in loss record 123 of
137
==2886== at 0x4026A68: calloc (vg_replace_malloc.c:566)
==2886== by 0x40111FB: _dl_allocate_tls (dl-tls.c:300)
==2886== by 0x407C2A8: pthread_create@@GLIBC_2.1 (allocatestack.c:580)
==2886== by 0x80D9591: ff_graph_thread_init (pthread.c:180)
==2886== by 0x80CD507: avfilter_graph_alloc_filter
(avfiltergraph.c:186)
==2886== by 0x80D8144: create_filter (graphparser.c:112)
==2886== by 0x80D8B99: avfilter_graph_parse2 (graphparser.c:169)
==2886==
==2886== 32,768 bytes in 1 blocks are possibly lost in loss record 135 of
137
==2886== at 0x40268A4: memalign (vg_replace_malloc.c:694)
==2886== by 0x402695E: posix_memalign (vg_replace_malloc.c:835)
==2886== by 0x886C6B7: av_mallocz (mem.c:93)
==2886== by 0x4160A3D2: ??? (in /lib/i386-linux-gnu/libz.so.1.2.7)
==2886== by 0x4160BA9C: inflate (in /lib/i386-linux-gnu/libz.so.1.2.7)
==2886== by 0x85BF151: decode_frame (pngdec.c:376)
==2886== by 0x85CC62D: frame_worker_thread (pthread.c:339)
==2886== by 0x407B953: start_thread (pthread_create.c:304)
==2886== by 0x416395D: clone (clone.S:130)
==2886==
==2886== LEAK SUMMARY:
==2886== definitely lost: 940 bytes in 50 blocks
==2886== indirectly lost: 170 bytes in 10 blocks
==2886== possibly lost: 35,360 bytes in 19 blocks
==2886== still reachable: 203,547 bytes in 262 blocks
==2886== suppressed: 0 bytes in 0 blocks
==2886== Reachable blocks (those to which a pointer was found) are not
shown.
==2886== To see them, rerun with: --leak-check=full --show-reachable=yes
==2886==
==2886== For counts of detected and suppressed errors, rerun with: -v
==2886== ERROR SUMMARY: 2011274 errors from 13 contexts (suppressed: 59
from 6)
Killed
}}}
{{{
knoppix at Microknoppix:/media/sdb1$ gdb ffmpeg-HEAD-c042684/ffmpeg_gGNU gdb
(GDB) 7.4.1-debian
Copyright (C) 2012 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 "i486-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /media/sdb1/ffmpeg-HEAD-c042684/ffmpeg_g...done.
(gdb) r -i ./png_fuzz2.mov -f null -
Starting program: /media/sdb1/ffmpeg-HEAD-c042684/ffmpeg_g -i
./png_fuzz2.mov -f null -
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
ffmpeg version 2.0-c042684 Copyright (c) 2000-2013 the FFmpeg developers
built on Aug 30 2013 20:55:53 with gcc 4.7 (Debian 4.7.2-5)
configuration: --disable-yasm --disable-ffprobe --disable-ffserver
--enable-gpl
libavutil 52. 42.100 / 52. 42.100
libavcodec 55. 29.100 / 55. 29.100
libavformat 55. 15.100 / 55. 15.100
libavdevice 55. 3.100 / 55. 3.100
libavfilter 3. 82.102 / 3. 82.102
libswscale 2. 5.100 / 2. 5.100
libswresample 0. 17.103 / 0. 17.103
libpostproc 52. 3.100 / 52. 3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from './png_fuzz2.mov':
Metadata:
major_brand : qt
minor_version : 537199360
compatible_brands: qt
creation_time : 2012-03-24 20:40:58
Duration: 00:00:05.96, start: 0.000000, bitrate: 567 kb/s
Stream #0:0(eng): Video: png (png / 0x20676E70), monob, 189x127 [SAR
2834:2834 DAR 189:127], 565 kb/s, 24 fps, 24 tbr, 1000k tbn, 1000k tbc
(default)
Metadata:
creation_time : 2012-03-24 20:40:58
handler_name : Procedura obs�ugi skr�t�w danych Apple
[New Thread 0xb7df8b70 (LWP 2912)]
[New Thread 0xb75f8b70 (LWP 2913)]
[New Thread 0xb6df8b70 (LWP 2914)]
[New Thread 0xb65f8b70 (LWP 2915)]
[New Thread 0xb5df8b70 (LWP 2916)]
[New Thread 0xb55f8b70 (LWP 2917)]
[New Thread 0xb4df8b70 (LWP 2918)]
[New Thread 0xb45f8b70 (LWP 2919)]
[New Thread 0xb3df8b70 (LWP 2920)]
[New Thread 0xb35f8b70 (LWP 2921)]
[New Thread 0xb2df8b70 (LWP 2922)]
[New Thread 0xb25f8b70 (LWP 2923)]
[New Thread 0xb1df8b70 (LWP 2924)]
[New Thread 0xb15f8b70 (LWP 2925)]
[New Thread 0xb0df8b70 (LWP 2926)]
[New Thread 0xb05f8b70 (LWP 2927)]
[New Thread 0xafdf8b70 (LWP 2928)]
[New Thread 0xaf5f8b70 (LWP 2929)]
Output #0, null, to 'pipe:':
Metadata:
major_brand : qt
minor_version : 537199360
compatible_brands: qt
encoder : Lavf55.15.100
Stream #0:0(eng): Video: rawvideo (B0W1 / 0x31573042), monob, 189x127
[SAR 1:1 DAR 189:127], q=2-31, 200 kb/s, 90k tbn, 24 tbc (default)
Metadata:
creation_time : 2012-03-24 20:40:58
handler_name : Procedura obs�ugi skr�t�w danych Apple
Stream mapping:
Stream #0:0 -> #0:0 (png -> rawvideo)
Press [q] to stop, [?] for help
[null @ 0x91078a0] Encoder did not produce proper pts, making some up.
[png @ 0x90f9e60] inflate returned error -3
[png @ 0x90f4220] IDAT without IHDR
[png @ 0x91096e0] inflate returned error -3
[png @ 0x90f5180] IDAT without IHDR
[png @ 0x90f32c0] inflate returned error -3
[png @ 0x90f7040] inflate returned error -3
[png @ 0x90f7fa0] Missing png signature
Error while decoding stream #0:0: Invalid data found when processing input
[png @ 0x90f8f00] inflate returned error -3
Error while decoding stream #0:0: Invalid data found when processing input
Last message repeated 1 times
[png @ 0x90f9e60] inflate returned error -3
Last message repeated 1 times
[png @ 0x91096e0] inflate returned error -3
[png @ 0x90f32c0] inflate returned error -3
Error while decoding stream #0:0: Invalid data found when processing input
Error while decoding stream #0:0: Invalid data found when processing input
[png @ 0x90f4220] unsupported bit depth 9 and color type 0
[png @ 0x90f5180] chunk too big
Error while decoding stream #0:0: Invalid data found when processing input
Error while decoding stream #0:0: Invalid data found when processing input
Last message repeated 1 times
[png @ 0x90f60e0] Error while decoding stream #0:0: Invalid data found
when processing input
inflate returned error -3
[png @ 0x90f8f00] Error while decoding stream #0:0: Invalid data found
when processing input
inflate returned error -3
[png @ 0x90f9e60] [png @ 0x90f7fa0] IEND without all image
[png @ 0x90f7040] inflate returned error -3
Error while decoding stream #0:0: Invalid data found when processing input
inflate returned error -3
[png @ 0x91096e0] inflate returned error -3
Error while decoding stream #0:0: Invalid data found when processing input
Error while decoding stream #0:0: Invalid data found when processing input
[png @ 0x90f4220] inflate returned error -3
Error while decoding stream #0:0: Invalid data found when processing input
[png @ 0x90f32c0] [png @ 0x90f5180] inflate returned error -3
inflate returned error -3
Error while decoding stream #0:0: Invalid data found when processing input
Error while decoding stream #0:0: Invalid data found when processing input
[png @ 0x90f60e0] inflate returned error -3
Error while decoding stream #0:0: Invalid data found when processing input
*** glibc detected *** /media/sdb1/ffmpeg-HEAD-c042684/ffmpeg_g: double
free or corruption (!prev): 0x09109f60 ***
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0xb0df8b70 (LWP 2926)]
add_bytes_l2_c (dst=0x9101040 "\212\372", <incomplete sequence \346>,
src1=0x91010d0 "", src2=0x9100fa0
"o\366@\320\b\356\212\006\026L*\252",
w=3) at libavcodec/pngdsp.c:35
35 long a = *(long *)(src1 + i);
(gdb) bt
#0 add_bytes_l2_c (dst=0x9101040 "\212\372", <incomplete sequence \346>,
src1=0x91010d0 "", src2=0x9100fa0
"o\366@\320\b\356\212\006\026L*\252",
w=3) at libavcodec/pngdsp.c:35
#1 0x085bf6db in png_handle_row (s=<optimized out>) at
libavcodec/pngdec.c:332
#2 png_decode_idat (length=<optimized out>, s=<optimized out>)
at libavcodec/pngdec.c:383
#3 decode_frame (avctx=0x90f7040, data=0x910b234, got_frame=0x910b3f0,
avpkt=0x910b1e4) at libavcodec/pngdec.c:694
#4 0x085cc62e in frame_worker_thread (arg=0x910b114)
at libavcodec/pthread.c:339
#5 0xb7f87954 in start_thread (arg=0xb0df8b70) at pthread_create.c:304
#6 0xb7f0895e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130
(gdb)
}}}
--
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2919>
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