Opened 11 years ago
Closed 11 years ago
#2714 closed defect (fixed)
mpeg4: crash with lowres > 2
| Reported by: | ami_stuff | Owned by: | |
|---|---|---|---|
| Priority: | important | Component: | avcodec |
| Version: | git-master | Keywords: | regression crash SIGSEGV asp lowres |
| Cc: | Blocked By: | ||
| Blocking: | Reproduced by developer: | yes | |
| Analyzed by developer: | no |
Description
attached file crashes ffmpeg when lowres >2 is used
this seems to be related to asm code, no crash here with "-cpuflags 0"
I will compile new build later to get a bt if crash is not reproducable
C:\>ffmpeg -vlowres 2 -i xvid.avi -an out.avi
ffmpeg version N-54183-g1029822 Copyright (c) 2000-2013 the FFmpeg developers
built on Jun 25 2013 02:39:45 with gcc 4.5.0 (GCC) 20100414 (Fedora MinGW 4.5.
0-1.fc14)
configuration: --prefix=/var/www/users/research/ffmpeg/snapshots/build --arch=
x86 --target-os=mingw32 --cross-prefix=i686-pc-mingw32- --cc='ccache i686-pc-min
gw32-gcc' --enable-w32threads --enable-memalign-hack --enable-runtime-cpudetect
--enable-cross-compile --enable-static --disable-shared --extra-libs='-lws2_32 -
lwinmm -lpthread' --extra-cflags='--static -I/var/www/users/research/ffmpeg/snap
shots/build/include' --extra-ldflags='-static -L/var/www/users/research/ffmpeg/s
napshots/build/lib' --enable-bzlib --enable-zlib --enable-gpl --enable-version3
--enable-nonfree --enable-libx264 --enable-libspeex --enable-libtheora --enable-
libvorbis --enable-libfaac --enable-libxvid --enable-libopencore-amrnb --enable-
libopencore-amrwb --enable-libmp3lame --enable-libvpx --disable-decoder=libvpx
libavutil 52. 37.101 / 52. 37.101
libavcodec 55. 17.100 / 55. 17.100
libavformat 55. 10.100 / 55. 10.100
libavdevice 55. 2.100 / 55. 2.100
libavfilter 3. 77.101 / 3. 77.101
libswscale 2. 3.100 / 2. 3.100
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 3.100 / 52. 3.100
[mpeg4 @ 0x20de1e0] Invalid and inefficient vfw-avi packed B frames detected
Input #0, avi, from 'xvid.avi':
Duration: 00:00:12.64, start: 0.000000, bitrate: 454 kb/s
Stream #0:0: Video: mpeg4 (Advanced Simple Profile) (XVID / 0x44495658), yuv
420p, 80x60 [SAR 1:1 DAR 4:3], 23.97 tbr, 23.97 tbn, 23.97 tbc
Stream #0:1: Audio: mp3 (U[0][0][0] / 0x0055), 44100 Hz, stereo, s16p, 128 k
b/s
[mpeg4 @ 0x20db6a0] too many threads/slices (5), reducing to 4
Output #0, avi, to 'out.avi':
Metadata:
ISFT : Lavf55.10.100
Stream #0:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 80x60 [SAR 1:1 DAR 4
:3], q=2-31, 200 kb/s, 23.97 tbn, 23.97 tbc
Stream mapping:
Stream #0:0 -> #0:0 (mpeg4 -> mpeg4)
Press [q] to stop, [?] for help
[mpeg4 @ 0x20fd7e0] Invalid and inefficient vfw-avi packed B frames detected
Attachments (2)
Change History (4)
by , 11 years ago
comment:1 by , 11 years ago
| Component: | undetermined → avcodec |
|---|---|
| Keywords: | regression crash SIGSEGV asp lowres added |
| Priority: | normal → important |
| Reproduced by developer: | set |
| Status: | new → open |
| Summary: | xvid: crash with lowres > 2 → mpeg4: crash with lowres > 2 |
| Version: | unspecified → git-master |
by , 11 years ago
| Attachment: | valgrind.log added |
|---|
comment:2 by , 11 years ago
| Resolution: | → fixed |
|---|---|
| Status: | open → closed |
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Regression since a3f30f2
$ valgrind ffmpeg_g -vlowres 3 -i xvid.avi -an -f null - ==21611== Memcheck, a memory error detector ==21611== Copyright (C) 2002-2011, and GNU GPL'd, by Julian Seward et al. ==21611== Using Valgrind-3.7.0 and LibVEX; rerun with -h for copyright info ==21611== Command: ffmpeg_g -vlowres 3 -i xvid.avi -an -f null - ==21611== ffmpeg version N-54200-gda8c9b3 Copyright (c) 2000-2013 the FFmpeg developers built on Jun 26 2013 00:26:34 with gcc 4.7 (SUSE Linux) configuration: --enable-gpl --disable-indev=jack libavutil 52. 37.101 / 52. 37.101 libavcodec 55. 17.100 / 55. 17.100 libavformat 55. 10.100 / 55. 10.100 libavdevice 55. 2.100 / 55. 2.100 libavfilter 3. 77.101 / 3. 77.101 libswscale 2. 3.100 / 2. 3.100 libswresample 0. 17.102 / 0. 17.102 libpostproc 52. 3.100 / 52. 3.100 [mpeg4 @ 0x7248540] Invalid and inefficient vfw-avi packed B frames detected Input #0, avi, from 'xvid.avi': Duration: 00:00:12.64, start: 0.000000, bitrate: 454 kb/s Stream #0:0: Video: mpeg4 (Advanced Simple Profile) (XVID / 0x44495658), yuv420p, 40x30 [SAR 1:1 DAR 4:3], 23.97 tbr, 23.97 tbn, 23.97 tbc Stream #0:1: Audio: mp3 (U[0][0][0] / 0x0055), 44100 Hz, stereo, s16p, 128 kb/s Output #0, null, to 'pipe:': Metadata: encoder : Lavf55.10.100 Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 40x30 [SAR 1:1 DAR 4:3], q=2-31, 200 kb/s, 90k tbn, 23.97 tbc Stream mapping: Stream #0:0 -> #0:0 (mpeg4 -> rawvideo) Press [q] to stop, [?] for help [mpeg4 @ 0x73ad520] Invalid and inefficient vfw-avi packed B frames detected ==21611== Thread 11: ==21611== Invalid write of size 8 ==21611== at 0xA74494: ff_put_pixels_clamped_mmx (dsputil_mmx.c:72) ==21611== by 0x8D5F0E: ff_MPV_decode_mb (mpegvideo.c:2591) ==21611== by 0x6E4D3F: decode_slice (h263dec.c:257) ==21611== by 0x6E5CE1: ff_h263_decode_frame (h263dec.c:679) ==21611== by 0x922075: frame_worker_thread (pthread.c:338) ==21611== by 0x5D1AE0D: start_thread (in /lib64/libpthread-2.15.so) ==21611== Address 0x73f5ba0 is 1 bytes after a block of size 575 alloc'd ==21611== at 0x4C290FE: memalign (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so) ==21611== by 0x4C291A7: posix_memalign (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so) ==21611== by 0xBF9989: av_malloc (mem.c:93) ==21611== by 0xBED6CD: av_buffer_allocz (buffer.c:70) ==21611== by 0xBEDCAB: av_buffer_pool_get (buffer.c:305) ==21611== by 0x9C7496: video_get_buffer (utils.c:550) ==21611== by 0x9C8A9E: get_buffer_internal (utils.c:830) ==21611== by 0x9C8FC5: ff_get_buffer (utils.c:842) ==21611== by 0x923995: ff_thread_get_buffer (pthread.c:955) ==21611== by 0x8CE3D2: ff_alloc_picture (mpegvideo.c:234) ==21611== by 0x8D240F: ff_MPV_frame_start (mpegvideo.c:1550) ==21611== by 0x6E5C4B: ff_h263_decode_frame (h263dec.c:649) ...(gdb) r -vlowres 3 -i xvid.avi -an -f null - Starting program: ffmpeg_g -vlowres 3 -i xvid.avi -an -f null - [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". ffmpeg version N-54200-gda8c9b3 Copyright (c) 2000-2013 the FFmpeg developers built on Jun 26 2013 00:26:34 with gcc 4.7 (SUSE Linux) configuration: --enable-gpl --disable-indev=jack libavutil 52. 37.101 / 52. 37.101 libavcodec 55. 17.100 / 55. 17.100 libavformat 55. 10.100 / 55. 10.100 libavdevice 55. 2.100 / 55. 2.100 libavfilter 3. 77.101 / 3. 77.101 libswscale 2. 3.100 / 2. 3.100 libswresample 0. 17.102 / 0. 17.102 libpostproc 52. 3.100 / 52. 3.100 [mpeg4 @ 0x169a420] Invalid and inefficient vfw-avi packed B frames detected Input #0, avi, from 'xvid.avi': Duration: 00:00:12.64, start: 0.000000, bitrate: 454 kb/s Stream #0:0: Video: mpeg4 (Advanced Simple Profile) (XVID / 0x44495658), yuv420p, 40x30 [SAR 1:1 DAR 4:3], 23.97 tbr, 23.97 tbn, 23.97 tbc Stream #0:1: Audio: mp3 (U[0][0][0] / 0x0055), 44100 Hz, stereo, s16p, 128 kb/s [New Thread 0x7ffff59e7700 (LWP 21680)] [New Thread 0x7ffff51e6700 (LWP 21681)] [New Thread 0x7ffff49e5700 (LWP 21682)] [New Thread 0x7ffff41e4700 (LWP 21683)] [New Thread 0x7ffff39e3700 (LWP 21684)] [New Thread 0x7ffff31e2700 (LWP 21685)] [New Thread 0x7ffff29e1700 (LWP 21686)] [New Thread 0x7ffff21e0700 (LWP 21687)] [New Thread 0x7ffff19df700 (LWP 21688)] [New Thread 0x7ffff11de700 (LWP 21689)] [New Thread 0x7ffff09dd700 (LWP 21690)] [New Thread 0x7ffff01dc700 (LWP 21691)] [New Thread 0x7fffef9db700 (LWP 21692)] [New Thread 0x7fffef1da700 (LWP 21693)] [New Thread 0x7fffee9d9700 (LWP 21694)] [New Thread 0x7fffee1d8700 (LWP 21695)] [New Thread 0x7fffed9d7700 (LWP 21696)] [New Thread 0x7fffed1d6700 (LWP 21697)] Output #0, null, to 'pipe:': Metadata: encoder : Lavf55.10.100 Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 40x30 [SAR 1:1 DAR 4:3], q=2-31, 200 kb/s, 90k tbn, 23.97 tbc Stream mapping: Stream #0:0 -> #0:0 (mpeg4 -> rawvideo) Press [q] to stop, [?] for help [mpeg4 @ 0x1683be0] Invalid and inefficient vfw-avi packed B frames detected Program received signal SIGSEGV, Segmentation fault. av_buffer_ref (buf=0x7fffe80254a0) at libavutil/buffer.c:100 100 avpriv_atomic_int_add_and_fetch(&buf->buffer->refcount, 1); (gdb) bt #0 av_buffer_ref (buf=0x7fffe80254a0) at libavutil/buffer.c:100 #1 0x0000000000bf4a16 in av_frame_ref (dst=0x16c4780, src=0x7fffe80008c0) at libavutil/frame.c:269 #2 0x00000000009cf0d7 in ff_thread_ref_frame (dst=dst@entry=0x16c49e8, src=src@entry=0x7fffe8000b28) at libavcodec/utils.c:3091 #3 0x00000000008ced26 in ff_mpeg_ref_picture (s=s@entry=0x16afde0, dst=0x16c4780, src=0x7fffe80008c0) at libavcodec/mpegvideo.c:511 #4 0x00000000008d08d6 in ff_mpeg_update_thread_context (dst=<optimized out>, src=<optimized out>) at libavcodec/mpegvideo.c:707 #5 0x0000000000922a50 in update_context_from_thread (for_user=0, src=<optimized out>, dst=<optimized out>) at libavcodec/pthread.c:418 #6 submit_packet (avpkt=0x7fffffffd5d0, p=0x16adcf8) at libavcodec/pthread.c:516 #7 ff_thread_decode_frame (avctx=avctx@entry=0x169a420, picture=picture@entry=0x169e040, got_picture_ptr=got_picture_ptr@entry=0x7fffffffd84c, avpkt=avpkt@entry=0x7fffffffd5d0) at libavcodec/pthread.c:597 #8 0x00000000009ca969 in avcodec_decode_video2 (avctx=0x169a420, picture=picture@entry=0x169e040, got_picture_ptr=got_picture_ptr@entry=0x7fffffffd84c, avpkt=avpkt@entry=0x7fffffffdab0) at libavcodec/utils.c:1937 #9 0x000000000046ac00 in decode_video (ist=ist@entry=0x16a0220, pkt=pkt@entry=0x7fffffffdab0, got_output=got_output@entry=0x7fffffffd84c) at ffmpeg.c:1654 #10 0x000000000046d8f7 in output_packet (pkt=0x7fffffffda50, ist=0x16a0220) at ffmpeg.c:1852 #11 process_input (file_index=<optimized out>) at ffmpeg.c:3064 #12 0x000000000045c550 in transcode_step () at ffmpeg.c:3160 #13 transcode () at ffmpeg.c:3212 #14 main (argc=<optimized out>, argv=<optimized out>) at ffmpeg.c:3390 (gdb) disass $pc-32,$pc+32 Dump of assembler code from 0xbed789 to 0xbed7c9: 0x0000000000bed789 <av_buffer_ref+9>: callq 0xbf9bc0 <av_mallocz> 0x0000000000bed78e <av_buffer_ref+14>: test %rax,%rax 0x0000000000bed791 <av_buffer_ref+17>: je 0xbed7ae <av_buffer_ref+46> 0x0000000000bed793 <av_buffer_ref+19>: mov (%rbx),%rdx 0x0000000000bed796 <av_buffer_ref+22>: mov %rdx,(%rax) 0x0000000000bed799 <av_buffer_ref+25>: mov 0x8(%rbx),%rcx 0x0000000000bed79d <av_buffer_ref+29>: mov %rcx,0x8(%rax) 0x0000000000bed7a1 <av_buffer_ref+33>: mov 0x10(%rbx),%rcx 0x0000000000bed7a5 <av_buffer_ref+37>: mov %rcx,0x10(%rax) => 0x0000000000bed7a9 <av_buffer_ref+41>: lock addl $0x1,0xc(%rdx) 0x0000000000bed7ae <av_buffer_ref+46>: pop %rbx 0x0000000000bed7af <av_buffer_ref+47>: retq 0x0000000000bed7b0 <av_buffer_unref+0>: test %rdi,%rdi 0x0000000000bed7b3 <av_buffer_unref+3>: je 0xbed7de <av_buffer_unref+46> 0x0000000000bed7b5 <av_buffer_unref+5>: mov (%rdi),%rax 0x0000000000bed7b8 <av_buffer_unref+8>: test %rax,%rax 0x0000000000bed7bb <av_buffer_unref+11>: je 0xbed7de <av_buffer_unref+46> 0x0000000000bed7bd <av_buffer_unref+13>: sub $0x18,%rsp 0x0000000000bed7c1 <av_buffer_unref+17>: mov (%rax),%rax 0x0000000000bed7c4 <av_buffer_unref+20>: mov %rax,0x8(%rsp) End of assembler dump. (gdb) info register rax 0x16835c0 23606720 rbx 0x7fffe80254a0 140737085854880 rcx 0x1111101010101010 1229781834423865360 rdx 0x1111111111111111 1229782938247303441 rsi 0x0 0 rdi 0x16835d8 23606744 rbp 0x16c49e8 0x16c49e8 rsp 0x7fffffffd440 0x7fffffffd440 r8 0x18 24 r9 0x101010101010101 72340172838076673 r10 0x0 0 r11 0x7ffff6099112 140737321210130 r12 0x16c4780 23873408 r13 0x16c49e8 23874024 r14 0x16afde0 23789024 r15 0x16c4aa8 23874216 rip 0xbed7a9 0xbed7a9 <av_buffer_ref+41> eflags 0x10206 [ PF IF RF ] cs 0x33 51 ss 0x2b 43 ds 0x0 0 es 0x0 0 fs 0x0 0 gs 0x0 0