severity 639948 normal tags 639948 upstream stop On Thu, Sep 01, 2011 at 09:28:48 (CEST), Elimar Riesebieter wrote:
> * Reinhard Tartler [110901 08:00 +0200]: > > [...] >> Can you please redo the backtrace with the package ffmpeg-dbg installed? > > [Thread debugging using libthread_db enabled] > Core was generated by `ffplay > 03-G3_Live_in_Denver-Joe_Satriani-Starry_Night.aac'. > Program terminated with signal 11, Segmentation fault. > #0 0x0f6ff2e4 in ff_fft_calc_altivec () at > /build/buildd-libav_0.7.1-3-powerpc-vCfdgT/libav-0.7.1/libavcodec/ppc/fft_altivec_s.S:447 > 447 > /build/buildd-libav_0.7.1-3-powerpc-vCfdgT/libav-0.7.1/libavcodec/ppc/fft_altivec_s.S: > Datei oder Verzeichnis nicht gefunden. > in > /build/buildd-libav_0.7.1-3-powerpc-vCfdgT/libav-0.7.1/libavcodec/ppc/fft_altivec_s.S > (gdb) bt > #0 0x0f6ff2e4 in ff_fft_calc_altivec () at > /build/buildd-libav_0.7.1-3-powerpc-vCfdgT/libav-0.7.1/libavcodec/ppc/fft_altivec_s.S:447 > #1 0x0f6feaa8 in ff_imdct_half_altivec (s=<optimized out>, output=<optimized > out>, input=<optimized out>) > at > /build/buildd-libav_0.7.1-3-powerpc-vCfdgT/libav-0.7.1/libavcodec/ppc/fft_altivec.c:93 > #2 0x0f437ce8 in imdct_and_windowing (ac=0x10065e00, sce=0x4917f0c0) at > /build/buildd-libav_0.7.1-3-powerpc-vCfdgT/libav-0.7.1/libavcodec/aacdec.c:1856 That gives some more insight. It avcodec tries to decode some AAC audio, and causes some altivec optimized functions to segfault in ff_fft_calc_altivec. Can you elaborate what kind of powerpc you have? > #3 0x0f43caa8 in spectral_to_sample (ac=<optimized out>) at > /build/buildd-libav_0.7.1-3-powerpc-vCfdgT/libav-0.7.1/libavcodec/aacdec.c:2015 > #4 aac_decode_frame_int (avctx=<optimized out>, data=0x49150020, > data_size=0x4914e938, gb=<optimized out>) > at > /build/buildd-libav_0.7.1-3-powerpc-vCfdgT/libav-0.7.1/libavcodec/aacdec.c:2170 > #5 0x0f43ccec in aac_decode_frame (avctx=<optimized out>, data=<optimized > out>, data_size=<optimized out>, avpkt=<optimized out>) > at > /build/buildd-libav_0.7.1-3-powerpc-vCfdgT/libav-0.7.1/libavcodec/aacdec.c:2216 > #6 0x0f77f25c in avcodec_decode_audio3 (avctx=0x10065a00, samples=<optimized > out>, frame_size_ptr=<optimized out>, avpkt=<optimized out>) > at > /build/buildd-libav_0.7.1-3-powerpc-vCfdgT/libav-0.7.1/libavcodec/utils.c:726 > #7 0x0ff3f924 in try_decode_frame (avpkt=0x100632a0, st=0x10061a00) at > /build/buildd-libav_0.7.1-3-powerpc-vCfdgT/libav-0.7.1/libavformat/utils.c:2104 > #8 av_find_stream_info (ic=0x10047e00) at > /build/buildd-libav_0.7.1-3-powerpc-vCfdgT/libav-0.7.1/libavformat/utils.c:2388 > #9 0x10008ac8 in decode_thread (arg=0x48882020) at > /build/buildd-libav_0.7.1-3-powerpc-vCfdgT/libav-0.7.1/ffplay.c:2362 > #10 0x0f18f63c in ?? () from /usr/lib/libSDL-1.2.so.0 > #11 0x0f1d7e18 in ?? () from /usr/lib/libSDL-1.2.so.0 > #12 0x0f1457a0 in start_thread () from /lib/powerpc-linux-gnu/libpthread.so.0 > #13 0x0f09c9f0 in clone () from /lib/powerpc-linux-gnu/libc.so.6 > >> Also, does removing the file /usr/lib/altivec/libavcodec.so.53 help? > > It helps, but was installed by libavcodec53 4:0.7.1-3? well, that's the package you've filed the bug against. > $ dpkg -L libavcodec53 | grep altivec > > /usr/lib/altivec > /usr/lib/altivec/libavcodec.so.53.5.0 > /usr/lib/altivec/libavcodec.so.53 > > There is more libav stuff in /usr/lib/altivec. Indeed, and that's intended. The problem is that it doesn't work for you. In any case, we need as sample to reproduce this ourselves. Since the filename '03-G3_Live_in_Denver-Joe_Satriani-Starry_Night.aac' indicates that the file might be rather longish, maybe you could share a part from that still exposes the bug? Try: dd if=sample-file of=small-sample-file bs=1024 count=10000 As this is definitly an upstream bug, please report this issue at the upstream bugzilla: http://bugzilla.libav.org/enter_bug.cgi and provide all information in this bug and potentially more as requested. -- Gruesse/greetings, Reinhard Tartler, KeyID 945348A4 -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
