Control: forwarded -1 http://bugzilla.libsdl.org/show_bug.cgi?id=1905
2013/5/11 Bas Wijnen <wij...@debian.org>: > (gdb) bt > #0 0xb7fde424 in __kernel_vsyscall () > #1 0xb7c9882f in raise () from /lib/i386-linux-gnu/i686/cmov/libc.so.6 > #2 0xb7c9bcf3 in abort () from /lib/i386-linux-gnu/i686/cmov/libc.so.6 > #3 0xb7cd5285 in ?? () from /lib/i386-linux-gnu/i686/cmov/libc.so.6 > #4 0xb7d6de05 in __fortify_fail () from > /lib/i386-linux-gnu/i686/cmov/libc.so.6 > #5 0xb7d6ddba in __stack_chk_fail () from > /lib/i386-linux-gnu/i686/cmov/libc.so.6 > #6 0xb7f904c4 in __stack_chk_fail_local () from > /usr/lib/i386-linux-gnu/libSDL_mixer-1.2.so.0 > #7 0xb7f8b3e3 in read_midi_file (mrw=mrw@entry=0x8c7b230, > count=count@entry=0xbfffe7bc, sp=sp@entry=0x8c82228) at > timidity/readmidi.c:1070 > #8 0xb7f88e8e in Timidity_LoadSong_RW (rw=rw@entry=0x8c7b230, > freerw=freerw@entry=1) at timidity/playmidi.c:1690 > #9 0xb7f7fe28 in Mix_LoadMUSType_RW 0x0805eb45 in ?? () > #14 0x080507ae in ?? () > #15 0x0805d604 in ?? () > #16 0x0804e09a in ?? () > #17 0x0804e323 in ?? () > #18 0x08078e4c in ?? () > #19 0x0804ba4d in ?? () > #20 0xb7c838f5 in __libc_start_main () from > /lib/i386-linux-gnu/i686/cmov/libc.so.6 > #21 0x0804baed in ?? () I am no expert in these matters, but as you said in the beggining of the bug report, what this backtrace suggests is that when trying to load a midi song and reading the file, the program manages to corrupt the stack, which triggers the exceptions/signals/etc provided by the fortifying functionality in order to prevent security problems. I am not sure if this is due to the fortifying options when compiling sdl-mixer or freedink, but in any case I think that it would be very unwise to disable them, especially in the libraries, used in many places including important emulators. The timidity code was built on ~1995 and has been unmaintained for many years, so it's not looking good. I don't really know what else to say, I will forward this upstream and let's see. It might be worth trying with libsdl2-mixer (already in NEW queue to be approved by FTP team), but I guess that it will pull all SDL2 dependencies and not sure if freedink will work with those. Thanks and cheers. -- Manuel A. Fernandez Montecelo <manuel.montez...@gmail.com> -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
