On Sun, Apr 29, 2007 at 05:30:45PM -0400, Wenbin Zhang wrote:
> 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.
well, the syscall trap looks fine, 313 is the syscall
on arm and it seems that util-vserver uses the same
implementation, so that should be fine too ...
you might get a warning at compile time, if that would
be interesting to have, otherwise something with your
toolchain could be wrong ...
best,
Herbert
> 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 Mon Apr 30 18:50:56 2007