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On Sunday 25 March 2012 13:45:09 Allin Cottrell wrote: > There's a problem that quite a few people have noted with > recent glibc and libasound (specifically the use of libdl by > the latter). I was hoping this might have gone away with glibc > 2.15 but it's still there. Maybe it's not a glibc bug, though > it looks rather like it. The symptom is that (e.g.) alsa's > "aplay" utility reliably segfaults when called to play a wav > file. > > I have inserted debugging statements in libasound (version > 1.0.25, dlmisc.c), to announce all its uses of the libdl > functions, and run aplay under valgrind (where it doesn't > actually segfault). I'm attaching the results. It looks as if > there's something wrong with glibc's do_lookup_x(): it's > reading from freed memory in response to dlsym() following a > successful invocation of dlopen() by libasound. please try some of the patches for known issues. you can find some: http://sources.gentoo.org/gentoo/src/patchsets/glibc/2.15/ i think you want the 0050 one. -mike
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