Actually I think the syscall error is because of strace on ARM, not because
of vcmd.
root@a780:/work/test# ./vcmd
wenbin print: num_cmd = 0, num_id = 0
Illegal instruction
root@a780:/work/test# strace -fF -o vcmd.trace ./vcmd
syscall: unknown syscall trap 0xef000139
"unknow syscall" should be a strace bug, I think. The basic failure is
becuase of "illegal instruction" during vserver(num_cmd, num_id, data)
syscall.
Thanks,
Wenbin
On 4/29/07, Wenbin Zhang <zhangwenbin@gmail.com> wrote:
>
> I traced the vcmd command. When the vcmd command is run and without
> arguments, the error is:
> syscall: unknown syscall trap 0xef000139
>
> This syscall error is occured while "num_ret = vserver(num_cmd, num_id,
> data);" is executed. I guss ARM is using a different method to register new
> syscall?
>
> Thanks,
> Wenbin
>
>
> On 4/29/07, Herbert Poetzl <herbert@13thfloor.at> wrote:
> >
> > On Fri, Apr 27, 2007 at 01:02:34PM -0400, Wenbin Zhang wrote:
> > > Hello, guys,
> > >
> > > This time I build a new Vserver enabled kernel and GPE package, now
> > solved
> > > the "Illegal instruction" on ARM.
> > > But I tried "vcmd -i 42 -C ctx_create -- ps auxwww", it just simply
> > > hung (but I can interrupt the command).
> > > Any approach to solve this?
> >
> > strace -fF -o vcmd.trace vcmd
> >
> > > Btw, I tried below command for the vserver kernel, seems OK.
> > > 1)root@a780:/work/vcmd-0.08# cat /proc/virtual/info
> > > VCIVersion: 0002:0002
> > > VCISyscall: 313
> > > VCIKernel: 03000036
> > >
> > > 2) root@a780:/work/vcmd-0.08# setattr --~hide /proc/uptime
> > >
> > > 3) root@a780:/work/vcmd-0.08# vserver-stat
> > > CTX PROC VSZ RSS userTIME sysTIME UPTIME NAME
> > > 0 49 165.9M 63.9M 0m55s76 0m24s19 10m14s64 root server
> > >
> > > 4) root@a780:/work/vcmd-0.08# vserver-info
> > > Versions:
> > > Kernel: 2.6.16.13-vs2.0.3-rc1
> > > VS-API: 0x00020002
> > > util-vserver: 0.30.212; Apr 17 2007, 18:47:18
> > >
> > > Features:
> > > CC: arm-angstrom-linux-gnueabi-gcc,
> > > arm-angstrom-linux-gnueabi-gcc (GCC) 4.1.1
> > > CXX: arm-angstrom-linux-gnueabi-c++,
> > > arm-angstrom-linux-gnueabi-c++ (GCC) 4.1.1
> > > CPPFLAGS: ''
> > > CFLAGS: '-g -O2 -std=c99 -Wall -pedantic -W
> > > -funit-at-a-time'
> > > CXXFLAGS: '-g -O2 -ansi -Wall -pedantic -W
> > > -fmessage-length=0 -funit-at-a-time'
> > > build/host: i686-pc-linux-gnu/arm-unknown-none
> > > Use dietlibc: no (you have been warned)
> > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> >
> > > Build C++ programs: yes
> > > Build C99 programs: yes
> > > Available APIs: v13,net,v21
> > > ext2fs Source: kernel
> > > syscall(2) invocation: traditional
> > > vserver(2) syscall#: 313/fallback
> > >
> > > Paths:
> > > prefix:
> > > sysconf-Directory: ${prefix}/etc
> > > cfg-Directory: ${prefix}/etc/vservers
> > > initrd-Directory: $(sysconfdir)/init.d
> > > pkgstate-Directory: ${prefix}/var/run/vservers
> > > vserver-Rootdir: /vservers
> > >
> > > Assumed 'SYSINFO' as no other option given; try '--help' for more
> > > information.
> > >
> > > Seems everything is fine, but why vcmd cannot be run correctly?
> >
> > no idea, maybe a broken toolchain?
> >
> > best,
> > Herbert
> >
> > > (I can run vcmd correctly on my PC machine)
> > >
> > > Thanks,
> > > Wenbin
> > >
> > > On 4/27/07, Wenbin Zhang <zhangwenbin@gmail.com> wrote:
> > > >
> > > >
> > > >
> > > >On 4/26/07, Herbert Poetzl < herbert@13thfloor.at> wrote:
> > > >>
> > > >> On Wed, Apr 25, 2007 at 12:40:12AM -0400, Wenbin Zhang wrote:
> > > >> > >
> > > >> > >
> > > >> > >> vcmd -i 42 -C ctx_create -- ps auxwww
> > > >> > >> vserver: ret = 0x0000002A (42)
> > > >> > >> USER PID %CPU %MEM VSZ RSS TTY STAT START
> > TIME
> > > >> COMMAND
> > > >> > >> root 11780 0.0 0.0 1944 672 pts/2 R+ 13:35
> > 0:00 ps
> > > >> > >> auxwww
> > > >> > >>
> > > >> > >I downloaded the vcmd source, and crosscompiled it, then copy to
> > the
> > > >> ARM
> > > >> > phone, however, when I tried to run the command, it cannot create
> > the
> > > >> > process successfully, very strange...
> > > >> > when I run "vcmd -h", it can show the help, but when I run "
> > vcmd -i
> > > >> 42 -C
> > > >> > ctx_create -- ps auxwww", it just hung.
> > > >> > root@a780:/work/vcmd- 0.08# ./vcmd -h
> > > >> > This is ./vcmd V0.08
> > > >> > options are:
> > > >> > -h print this help message
> > > >> > -A dump data after syscall
> > > >> > -B dump data before syscall
> > > >> >
> > > >> > Btw, my ARM kernel is vserver enabled, I can find the
> > > >> > /proc/virtual/info does exist but it is an empty file.
> > > >>
> > > >> that sounds odd ...
> > > >>
> > > >> > I guess might be the vserver kernel module has some
> > > >> > problem, but I cannot figure out what it is, which is the
> > > >> > thing I am worrying about.
> > > >>
> > > >> there is no such thing as a Linux-VServer kernel module,
> > > >> so I'm pretty sure that is fine ...
> > > >>
> > > >> > Can you think of any ideas?
> > > >>
> > > >> maybe you compiled the wrong kernel?
> > > >> maybe your toolchain is broken?
> > > >>
> > > >> Not really, I compiled other package with my tool chain, that's
> > fine, no
> > > >problem
> > > >However seems vserver kernel has some problems.
> > > >
> > > >root@a780 :/# vserver-info
> > > >Versions:
> > > > Kernel: 2.6.16.13-vs2.0.3-rc1-ezx6
> > > > VS-API: Illegal instruction
> > > >root@a780:/# vserver-stat
> > > >Illegal instruction
> > > >
> > > >Strange, any possiblities?
> > > >
> > > >Thanks,
> > > >Wenbin
> > > >
> >
> > > _______________________________________________
> > > Vserver mailing list
> > > Vserver@list.linux-vserver.org
> > > http://list.linux-vserver.org/mailman/listinfo/vserver
> >
> >
>
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Received on Sun Apr 29 23:00:24 2007