[OpenAFS-devel] Re: segfault in process.c:savecontext() during lwp init -- how to debug?

[Adam Megacz]

Marc Dionne <marc.c.dionne@gmail.com> writes:
>>    (gdb) bt
>>    #0  0xb7df69eb in savecontext () from /lib/libnss_afs.so.2
>>    #1  0xb7df6687 in LWP_CreateProcess () from /lib/libnss_afs.so.2
>
> What architecture is this on, and which glibc?

Linux 2.6.18, Debian's libc6 2.7-18.  It's a recent etch->lenny upgrade.


> In the past this has generally been a symptom of not dealing properly
> with setjmp/longjmp pointer mangling in glibc.  The solution has been
> to move to the ucontext interface (defining USE_UCONTEXT), or to
> implement a pointer demangling function (ptr_mangle()).

Hrm.  This problem is occurring in a Debian package; does that mean
that we have to talk the maintainers of the openafs package into
changing the options with which that package it is built?

  - a