On Fri, 4 Nov 2005, Blaisorblade wrote:
On Thursday 03 November 2005 08:19, Hayim Shaul wrote:
I saw the problem recurring.
Wait a moment, just noticed after all the rest - you are another user (we
discussed the rmmod crash, I've finished and maybe posted a patch for it) and
getting the same problem? You talk like being the same...
Yep. I am the one with the rmmod problem.
Nevertheless, I saw what Eyal had described in a computer in our lab.
I installed UML on yet another computer and it froze.
I thought the UML compiled wrong so I copied a working UML executable to
the faulty computer and it worked as /root/linux. When I copied it to /bin
it froze again.
Anyway, I'm answering assuming this is the same problem.
From a previous mail I understand that changing the path has worked for
Eyal.
Try "strace -f gdb", give "run" at the gdb prompt and see it going nuts (never
tested)...
I am not sure how reliable this trace is. When I run gdb on linux it
receives a SIGTRAP and breaks almost immediately.
Is the UML generating trap signals?
If so, is there a way not to generate them, or tell gdb to ignore them?
*) pass mode=tt. It's slower but more tested. It should be a workaround for
you (make sure you enable TT mode first).
This has worked.
*) Try using a different UML version - there is my -bs tree, on my homepage
(see signature), which is more up-to-date than -stable kernels (applies on
them though). It has fixes for -skas0 mode (it's a recent introduction so
still to be perfected a bit)
I'll do it later and let you know.
*) Try with disabling/enabling on the host:
exec_shield
/proc/sys/kernel/randomize_va_space
and see if there's any difference.
no difference here
Hayim.
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