Re: Systemtap un Ubuntu 14.04

[Shane Wayne <zx0319 at gmail dot com>]

Hi Wolfram Gettert:
I've tested you strace.stp in my system.
My system was installed Ubuntu 14.04 server with standard kernel listed below:
ii  linux-image-3.13.0-40-generic         3.13.0-40.69
ii  linux-image-3.13.0-40-generic-dbgsym  3.13.0-40.69
And I also install SystemTap from apt-get:
Systemtap translator/driver (version 2.3/0.158, Debian version
2.3-1ubuntu1 sty))
Copyright (C) 2005-2013 Red Hat, Inc. and others
This is free software; see the source for copying conditions.
enabled features: AVAHI LIBSQLITE3 NSS TR1_UNORDERED_MAP NLS
In my system I can run strace.stp from
https://raw.githubusercontent.com/fche/systemtap/master/doc/tutorial/strace-open.stp

sudo stap -v strace.stp
Pass 1: parsed user script and 95 library script(s) using
84508virt/27192res8shr/25428data kb, in 160usr/10sys/174real ms.
Pass 2: analyzed script: 3 probe(s), 9 function(s), 26 embed(s), 0
global(s)ng 280200virt/67268res/3756shr/63984data kb, in
1020usr/160sys/1193real ms.
Pass 3: using cached
/home/shane/.systemtap/cache/1f/stap_1f7e0f03ef5e1352bf4c51299552_20238.c
Pass 4: using cached
/home/shane/.systemtap/cache/1f/stap_1f7e0f03ef5e1352bf4c51299552_20238.ko
Pass 5: starting run.
collectl(1586) open ("/proc/buddyinfo", O_RDONLY)
collectl(1586) open ("/proc/stat", O_RDONLY)
collectl(1586) open ("/proc/interrupts", O_RDONLY)
collectl(1586) open ("/proc/diskstats", O_RDONLY)

Could you provide more information?

2014-11-24 2:58 GMT+08:00 Wolfram Gettert <wolfram.gettert@mixed-mode.de>:
> Hi,
> I am trying get Systemtap running on Ubuntu 14.04.
>
> I am using the standard kernel 3.13.0-32-generic.
> I have installed these
> http://ddebs.ubuntu.com/pool/main/l/linux-lts-trusty/linux-image-3.13.0-32-generic-dbgsym_3.13.0-32.57~precise1_amd64.ddeb
> pac debug symbols.
>
> I tried two versions of systemtap.
>
> This one installed as Debian package:
> stap --version
> Systemtap translator/driver (version 2.3/0.158, Debian version
> 2.3-1ubuntu1 (trusty))
> Copyright (C) 2005-2013 Red Hat, Inc. and others
> This is free software; see the source for copying conditions.
> enabled features: AVAHI LIBSQLITE3 NSS TR1_UNORDERED_MAP NLS
>
> This one from git:
> ./stap --version
> Systemtap translator/driver (version 2.7/0.158, commit
> release-2.6-93-g0cf3720fbd15 + changes)
> Copyright (C) 2005-2014 Red Hat, Inc. and others
> This is free software; see the source for copying conditions.
> enabled features: TR1_UNORDERED_MAP NLS
>
>
> I get the following error executing my probe listening for the open syscall.
>
> mm@xubuntu:~/systemtap-2.7-7159/bin$ sudo stap
> ../../Downloads/correct/systemtap/strace-open.stp
> semantic error: not accessible at this address [man error::dwarf]
> (0xffffffff8121d060, dieoffset: 0x1d2106d): identifier '$filename' at
> /usr/share/systemtap/tapset/linux/syscalls2.stp:128:32
>         source:         filename = user_string_quoted($filename)
>                                                       ^
>
> semantic error: not accessible at this address [man error::dwarf]
> (0xffffffff8121d060, dieoffset: 0x1d2107d): identifier '$flags' at :129:10
>         source:         flags = $flags
>                                 ^
>
> semantic error: not accessible at this address [man error::dwarf]
> (0xffffffff8121d060, dieoffset: 0x1d2106d): identifier '$filename' at
> :132:54
>         source:                 argstr = sprintf("%s, %s, %#o",
> user_string_quoted($filename),
>                                                                                    ^
>
> semantic error: not accessible at this address [man error::dwarf]
> (0xffffffff811c9000, dieoffset: 0x19574d4): identifier '$filename' at
> :128:32
>         source:         filename = user_string_quoted($filename)
>                                                       ^
>
> semantic error: not accessible at this address [man error::dwarf]
> (0xffffffff811c9000, dieoffset: 0x19574e4): identifier '$flags' at :129:10
>         source:         flags = $flags
>                                 ^
>
> semantic error: not accessible at this address [man error::dwarf]
> (0xffffffff811c9000, dieoffset: 0x19574d4): identifier '$filename' at
> :132:54
>         source:                 argstr = sprintf("%s, %s, %#o",
> user_string_quoted($filename),
>                                                                                    ^
>
> Pass 2: analysis failed.  [man error::pass2]
> Tip: /usr/share/doc/systemtap/README.Debian should help you get started.
>
>
> I add this as additional information. I read it in a formum post that it
> may be usefull for you.
>   stap -L 'kernel.function("vfs_write").*'
> kernel.function("vfs_write@/build/buildd/linux-lts-trusty-3.13.0/fs/read_write.c:457").call
> kernel.function("vfs_write@/build/buildd/linux-lts-trusty-3.13.0/fs/read_write.c:457").exported
> kernel.function("vfs_write@/build/buildd/linux-lts-trusty-3.13.0/fs/read_write.c:457").return
> $return:ssize_t
>
>
> The gcc I used is:
> gcc --version
> gcc (Ubuntu 4.8.2-19ubuntu1) 4.8.2
> Copyright (C) 2013 Free Software Foundation, Inc.
> This is free software; see the source for copying conditions.  There is NO
> warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
>
>
> Do you have any idea what the reason could be?
>
>
> Thanks for any hint.
>
> Wolfram
>
>
>



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