[Bug runtime/14804] New: Kernel panic when running hello world stap script

["jiri.horky at gmail dot com" <sourceware-bugzilla at sourceware dot org>]

http://sourceware.org/bugzilla/show_bug.cgi?id=14804

             Bug #: 14804
           Summary: Kernel panic when running hello world stap script
           Product: systemtap
           Version: unspecified
            Status: NEW
          Severity: critical
          Priority: P2
         Component: runtime
        AssignedTo: systemtap@sourceware.org
        ReportedBy: jiri.horky@gmail.com
    Classification: Unclassified


Created attachment 6715
  --> http://sourceware.org/bugzilla/attachment.cgi?id=6715
Various information including backtrace,log,proc-modules etc.

Hi, I get kernel panic - "unable to handle kernel NULL pointer dereference at
0000000000000018" when running simple systemtap script. More information
follows.

System: SLES 11 SP1, kernel 2.6.32.59-0.7-default x86_64, 2x Xeon X5650, 48GB
RAM.
Systemtap: current git clone from 04.11.2012  (2.1/0.148, commit
release-2.0-75-g02bff02 + changes)
Directory where systemtap is installed: /usr/local/ (/usr/local/bin/stap)
The values for all environment variables: included as attachment.
The version of all related packages installed:

elfutils-0.137-8.22.58.x86_64
gcc-4.3-62.198.x86_64
gcc-c++-4.3-62.198.x86_64
gcc43-32bit-4.3.4_20091019-0.7.35.x86_64
gcc43-4.3.4_20091019-0.7.35.x86_64
gcc43-c++-4.3.4_20091019-0.7.35.x86_64
kernel-default-2.6.32.59-0.7.1.x86_64
kernel-default-base-2.6.32.59-0.7.1.x86_64
kernel-default-debuginfo-2.6.32.59-0.7.1.x86_64
kernel-default-devel-2.6.32.59-0.7.1.x86_64
kernel-default-devel-2.6.32.59-0.7.1.x86_64
kernel-source-2.6.32.59-0.7.1.x86_64
libgcc43-32bit-4.3.4_20091019-0.7.35.x86_64
libgcc43-4.3.4_20091019-0.7.35.x86_64
linux-kernel-headers-2.6.32-1.4.13.noarch
sgi-nfs-kernel-server-1.2.1-2.18.1sgi250r1.sles11.x86_64

PLEASE NOTE: systamtap was built ./configure
--with-elfutils=/root/elfutils-0.148 

Stap invocation: stap -k -vvv -e 'probe begin { log ("hello world") }'
Bug: BUG: unable to handle kernel NULL pointer dereference at 0000000000000018
Reproducible: Always
GCC: gcc (SUSE Linux) 4.3.4 [gcc-4_3-branch revision 152973]

modinfo /tmp/stapcmHxTQ/stap_5550.ko 
filename:       /tmp/stapcmHxTQ/stap_5550.ko
license:        GPL
description:    systemtap-generated probe
license:        GPL
srcversion:     43DA452BDA49BFCA2E81AAA
depends:        
vermagic:       2.6.32.59-0.7-default SMP mod_unload modversions 
parm:           _stp_bufsize:buffer size (int)


I include more information from kernel crashdump as attachment.

Please let me know if you need more information (I can upload crash dump image
if needed).

Jiri Horky

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