On 06/29/2009 04:33 PM, Adam Megacz wrote:
Can anybody advise me on how to proceed with debugging here?
I'm getting a segfault in lwp/process.c's savecontext(), which appears
to do some really scary stuff with the stack and setjmp()/longjmp().
This happens during the lwp init. Has anybody seen this before?
(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?
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()).
Marc
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