Re: [gentoo-hardened] erlang fails to install on kvm guest (illegal instruction)

[Yannis Kontekakis]

On 11/20/2012 06:13 PM, Alexander Tsoy wrote:
> В Tue, 20 Nov 2012 17:50:36 +0200
> Yannis Kontekakis<tolis@×××××××××××.gr>  пишет:
>
>> On 11/20/2012 05:34 PM, Alexander Tsoy wrote:
>>> В Tue, 20 Nov 2012 16:54:39 +0200
>>> Yannis Kontekakis<tolis@×××××××××××.gr>   пишет:
>>>
>>>> Hello,
>>>>
>>>> I am trying to install erlang on a hardened amd64 gentoo system running
>>>> on a kvm guest. The use flags and version of erlang are the following:
>>>>
>>>> dev-lang/erlang-15.2  USE="hipe java kpoll odbc smp ssl -compat-ethread
>>>> -doc -emacs -halfword -sctp -tk -wxwidgets"
>>>>
>>>> my CFLAGS are:
>>>> CFLAGS="-march=core2 -O2 -pipe"
>>>> CXXFLAGS="${CFLAGS}"
>>>>
>>>> cat /proc/cpuinfo reports 4 cores of:
>>>>
>>>> processor    : 3
>>>> vendor_id    : AuthenticAMD
>>>> cpu family    : 6
>>>> model        : 2
>>>> model name    : QEMU Virtual CPU version 1.0
>>>> stepping    : 3
>>>> microcode    : 0x1000065
>>>> cpu MHz        : 2100.278
>>>> cache size    : 512 KB
>>>> fpu        : yes
>>>> fpu_exception    : yes
>>>> cpuid level    : 4
>>>> wp        : yes
>>>> flags        : fpu de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
>>>> pat pse36 clflush mmx fxsr sse sse2 syscall nx lm nopl pni cx16 popcnt
>>>> hypervisor lahf_lm svm abm sse4a
>>>> bogomips    : 4200.55
>>>> TLB size    : 1024 4K pages
>>>> clflush size    : 64
>>>> cache_alignment    : 64
>>>> address sizes    : 40 bits physical, 48 bits virtual
>>>> power management:
>>>>
>>>> the error message that emerge prints while dying:
>>>>
>>>> === Entering application hipe
>>>> make[3]: Entering directory
>>>> `/var/tmp/portage/dev-lang/erlang-15.2/work/otp_src_R15B/lib/hipe/rtl'
>>>> (cd ../main&&   make hipe.hrl)
>>>> make[4]: Entering directory
>>>> `/var/tmp/portage/dev-lang/erlang-15.2/work/otp_src_R15B/lib/hipe/main'
>>>> sed -e "s;%VSN%;3.9;" ../../hipe/main/hipe.hrl.src>
>>>> ../../hipe/main/hipe.hrl
>>>> make[4]: Leaving directory
>>>> `/var/tmp/portage/dev-lang/erlang-15.2/work/otp_src_R15B/lib/hipe/main'
>>>> erlc -W  +debug_info +inline -o../ebin hipe_rtl.erl
>>>> make[3]: *** [../ebin/hipe_rtl.beam] Illegal instruction
>>>> make[3]: Leaving directory
>>>> `/var/tmp/portage/dev-lang/erlang-15.2/work/otp_src_R15B/lib/hipe/rtl'
>>>> make[2]: *** [opt] Error 2
>>>> make[2]: Leaving directory
>>>> `/var/tmp/portage/dev-lang/erlang-15.2/work/otp_src_R15B/lib/hipe'
>>>> make[1]: *** [opt] Error 2
>>>> make[1]: Leaving directory
>>>> `/var/tmp/portage/dev-lang/erlang-15.2/work/otp_src_R15B/lib'
>>>> make: *** [secondary_bootstrap_build] Error 2
>>>> emake failed
>>>>     * ERROR: dev-lang/erlang-15.2 failed (compile phase):
>>>>     *   (no error message)
>>>>     *
>>>>     * Call stack:
>>>>     *     ebuild.sh, line  93:  Called src_compile
>>>>     *   environment, line 3965:  Called die
>>>>     * The specific snippet of code:
>>>>     *       emake -j1 || die;
>>>>     *
>>>>
>>>> And finally, dmesg reports:
>>>> beam.smp[27752] trap invalid opcode ip:54b49c00c4 sp:3d9f459d3f0 error:0
>>>> in beam.smp[54b48e4000+261000]
>>>>
>>>> Emerging erlang on my desktop(a similar hardened gentoo setup) completes
>>>> successfully. The only thing I can think of is that something is wrong
>>>> with my CFLAGS(but this is just an assumption).
>>>>
>>>> Any help would be appreciated
>>>>
>>>> Regards,
>>>>
>>>> Yannis
>>>>
>>> It seems that KVM host is and AMD-based system. I suggest you to drop
>>> "-march=core2" from CFLAGS. Or if you do not plan to migrate this VM
>>> you can also try to replace it with something like "-march=amdfam10
>>> -mno-3dnow". :)
>>>
>> I thought so... I now have to rebuild the whole world :) Is anyone aware
>> of an -march value that can be used interchangeably between 64bit intel
>> &  amd cpus? The kvm host is not under my administration, so at any time
>> my guest could be switched between hosts.
>>
> Simply do not use -march:
> CFLAGS="-O2 -pipe"
> Binaries compiled with this cflags should work on any x86_64 system.
>
Thanks. I will go with it.