Blaisorblade wrote:

>On Thursday 24 November 2005 02:19, Blaisorblade wrote:
>  
>
>>On Wednesday 23 November 2005 22:07, Chris wrote:
>>
>>>kidding aside, i asked because i was wondering why the host crashed
>>>      
>>>
>>Ok, that's different - no matter which fscking compiler you use, the host
>>shouldn't come down.
>>    
>>
>Yep, this crash wasn't described in your original mail, so please add all 
>details about the compilation environment, the host kernel, the hardware and 
>the scenario triggering the host crash (if any).
>
>  
>

here we go:

Portage 2.0.51.22-r3 (hardened/x86/2.6, gcc-3.4.4, glibc-2.3.5-r2,
2.6.12-gentoo-r10-skas3-v8.2 i686)
=================================================================
System uname: 2.6.12-gentoo-r10-skas3-v8.2 i686 Pentium III (Coppermine)
Gentoo Base System version 1.6.13
ccache version 2.3 [enabled]
dev-lang/python:     2.3.5-r2, 2.4.2
sys-apps/sandbox:    1.2.12
sys-devel/autoconf:  2.13, 2.59-r6
sys-devel/automake:  1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6-r1
sys-devel/binutils:  2.16.1
sys-devel/libtool:   1.5.20
virtual/os-headers:  2.6.11-r2
CBUILD="i686-pc-linux-gnu"
CFLAGS="-O2 -march=pentium3 -pipe -fomit-frame-pointer"
CHOST="i686-pc-linux-gnu"
CXXFLAGS="-O2 -march=pentium3 -pipe -fomit-frame-pointer"

the system is a dual p3 with 1ghz (smp enabled), 2gb ram (high memory is
set to 4gb), nptl.

the scenario was:
2 umls running chrooted using your precompiled um32-2.6.14-release. they
were bridged with the host using brctl, which so far went without
problems. to really stress them i started 10 scp which endlessly copied
bzipped kernelsources to and from each other (host<->uml, uml<->uml,
uml<->some other machine on the net) which pushed the load on the host
around 20.
~10h later the host crashed.

i ran the same kind of test before without uml for 3 days nonstop to
test the host system before getting the umls into game, which worked
without a crash and a load around 30, so i guess it has something to do
with them, but to be sure i started the test again a few minutes ago,
only difference is that i'm trying your 2.6.13 binaries and on another
machine i began to recompile the system without a hardened tc and will
start the same test too and then post my results.
memtest also ran for ~24h without a failure, so i'm sure this isn't the
source of the problem.

greets, chris

btw, how about grsec + uml? some plans for this? (just curious, because
the chroot-restrictions from grsec would be really a great thing for the
paranoids beyond us *grin)












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