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[Bug uprobes/17867] New: Kernel panic while running a simple script doing userland probing only
- From: "agentzh at gmail dot com" <sourceware-bugzilla at sourceware dot org>
- To: systemtap at sourceware dot org
- Date: Thu, 22 Jan 2015 23:50:49 +0000
- Subject: [Bug uprobes/17867] New: Kernel panic while running a simple script doing userland probing only
- Auto-submitted: auto-generated
https://sourceware.org/bugzilla/show_bug.cgi?id=17867
Bug ID: 17867
Summary: Kernel panic while running a simple script doing
userland probing only
Product: systemtap
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: uprobes
Assignee: systemtap at sourceware dot org
Reporter: agentzh at gmail dot com
Created attachment 8076
--> https://sourceware.org/bugzilla/attachment.cgi?id=8076&action=edit
Kernel panic logs
Hi, guys!
I was running the ngx-count-conns.stp script with systemtap 2.5 + kernel
3.10.27 on one of our metal boxes for several times. For many times it works as
expected, but for at least one time it triggers kernel panic (please see the
attached logs).
It's quite hard to reproduce. Not sure if it's a known issue that has already
been fixed in newer versions of systemtap and kernel.
We haven't seen any kernel panic with out extensive production use of
systemtap. So this is really for the first time and is quite scary ;) Any
pointers will be highly appreciated :)
More details:
$ stap --version
Systemtap translator/driver (version 2.5/0.159, non-git sources)
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
$ uname -a
Linux 16m3 3.10.27 #1 SMP Fri Jan 17 12:03:42 PST 2014 x86_64 GNU/Linux
$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/4.7/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 4.7.3-7'
--with-bugurl=file:///usr/share/doc/gcc-4.7/README.Bugs
--enable-languages=c,c++,go,fortran,objc,obj-c++ --prefix=/usr
--program-suffix=-4.7 --enable-shared --enable-linker-build-id
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--with-gxx-include-dir=/usr/include/c++/4.7 --libdir=/usr/lib --enable-nls
--with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug
--enable-gnu-unique-object --enable-plugin --with-system-zlib --enable-objc-gc
--enable-multiarch --with-arch-32=i586 --with-abi=m64
--with-multilib-list=m32,m64,mx32 --with-tune=generic --enable-checking=release
--build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
gcc version 4.7.3 (Debian 4.7.3-7)
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