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[Bug tapsets/19300] New: Many SystemTap tapsets failing on kernel.org 4.2.0 kernel
- From: "steven_b_wood at fastmail dot fm" <sourceware-bugzilla at sourceware dot org>
- To: systemtap at sourceware dot org
- Date: Fri, 27 Nov 2015 21:25:10 +0000
- Subject: [Bug tapsets/19300] New: Many SystemTap tapsets failing on kernel.org 4.2.0 kernel
- Auto-submitted: auto-generated
https://sourceware.org/bugzilla/show_bug.cgi?id=19300
Bug ID: 19300
Summary: Many SystemTap tapsets failing on kernel.org 4.2.0
kernel
Product: systemtap
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: tapsets
Assignee: systemtap at sourceware dot org
Reporter: steven_b_wood at fastmail dot fm
Target Milestone: ---
Created attachment 8816
--> https://sourceware.org/bugzilla/attachment.cgi?id=8816&action=edit
Configuration Files and Test Results
Hello,
I recently installed SystemTap on a vanilla 4.2.0 kernel(Linux From Scratch
7.8). While going through the SystemTap Beginners Guide and testing the various
scripts I notice that some tapsets work but unfortunately the network related
tapsets -- the ones I want to use -- do not.
For example, running a tapset like:
probe tcp.ipv4.receive {
printf(" %15s %15s %5d %5d %d %d %d %d %d %d\n",
saddr, daddr, sport, dport, urg, ack, psh, rst, syn, fin)
}
will result in:
semantic error: while processing function __tcp_skb_ack
thrown from: elaborate.cxx:4955
semantic error: type definition 'tcphdr' not found in 'kernel': operator
'@cast' at /usr/share/systemtap/tapset/linux/tcp.stp:121:9
thrown from: elaborate.cxx:5541
source: return @cast(tcphdr, "tcphdr")->ack
I know that the necessary headers are there on my box and that the kernel has
been compiled with CONFIG_DEBUG_INFO and the other required CONFIG settings.
For some reason wildcards don't work either -- not a big deal to me but perhaps
it may illuminate what is going on.
stap -vv -e 'probe kernel.function("*@net/socket.c") { }'
semantic error: while resolving probe point: identifier 'kernel' at <input>:1:7
thrown from: elaborate.cxx:1069
source: probe kernel.function("*@net/socket.c") { }
^
As an example of what works -- probes like these work great:
probe syscall.open
{
printf ("%s(%d) open\n", execname(), pid())
}
--or--
global count_jiffies, count_ms
probe timer.jiffies(100) { count_jiffies ++ }
probe timer.ms(100) { count_ms ++ }
probe timer.ms(12345)
{
hz=(1000*count_jiffies) / count_ms
printf ("jiffies:ms ratio %d:%d => CONFIG_HZ=%d\n",
count_jiffies, count_ms, hz)
exit ()
}
I am hoping that the root cause of these issues is perhaps configuration as
each Linux distro puts things in slightly different places. SystemTap seems
pretty impressive and I hope to be able to fully use it in the future on
kernel.org kernels, so any help on this would be greatly appreciated.
-------ATTACHMENTS-------
1) kernel .config showing modules for systemtap installed per instructions in
'Building a kernel.org kernel' under Installation -> Build Your Own
2) elfutils 0.164 config.log
3) systemtap 2.9 config.log
4) results of make installcheck
5) successful results of stap -vv variables-in-printf.stp
6) failure results of stap -vv tcpdumplike.stp
7) successful results of stap -vv timer-jiffies.stp
8) failure results of stap -vv wildcards.stp
-------SYSTEMTAP VERSION-------
Systemtap translator/driver (version 2.9/0.164, non-git sources)
Copyright (C) 2005-2015 Red Hat, Inc. and others
This is free software; see the source for copying conditions.
enabled features: NLS TR1_UNORDERED_MAP
-------KERNEL VERSION------
Linux xyz_lfs 4.2.0 #1 SMP Thu Nov 26 22:12:49 PST 2015 i686 GNU/Linux
------DEBUGINFO PATH------- (as per 'Building a kernel.org kernel')
lrwxrwxrwx 1 root root 18 Nov 21 15:36 /lib/modules/4.2.0/build ->
/sources/linux-4.2
-------GCC VERSION------
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/i686-pc-linux-gnu/5.2.0/lto-wrapper
Target: i686-pc-linux-gnu
Configured with: ../gcc-5.2.0/configure --prefix=/usr --enable-languages=c,c++
--disable-multilib --disable-bootstrap --with-system-zlib
Thread model: posix
gcc version 5.2.0 (GCC)
------ELFUTILS VERSION------
elfutils-0.164
-------ENVIRONMENT VARIABLES------
HZ=100
SHELL=/bin/bash
TERM=xterm-256color
USER=root
MAIL=/var/mail/root
PATH=/sbin:/bin:/usr/sbin:/usr/bin
PWD=/sources/linux-4.2
LANG=en_US.utf8#
SHLVL=1
HOME=/root
LOGNAME=root
_=/usr/bin/env
OLDPWD=/usr/share/systemtap/tapset/linux
------ALL SOFTWARE ON BOX------
-su-4.3# ls /sources
acl-2.2.52.src.tar.gz gettext-0.19.5.1.tar.xz
ncurses-6.0.tar.gz
attr-2.4.47.src.tar.gz git-2.6.0.tar.xz
openssh-7.1p1.tar.gz
autoconf-2.69.tar.xz glibc-2.22
openssl-1.0.2d.tar.gz
automake-1.15.tar.xz glibc-2.22-fhs-1.patch
patch-2.7.5.tar.xz
bash-4.3.30.tar.gz glibc-2.22.tar.xz
perl-5.22.0.tar.bz2
bash-4.3.30-upstream_fixes-2.patch glibc-2.22-upstream_i386_fix-1.patch
pkg-config-0.28.tar.gz
bc-1.06.95-memory_leak-1.patch gmp-6.0.0a.tar.xz
procps-ng-3.3.11.tar.xz
bc-1.06.95.tar.bz2 gperf-3.0.4.tar.gz
psmisc-22.21.tar.gz
binutils-2.25.1.tar.bz2 grep-2.21.tar.xz
readline-6.3.tar.gz
bison-3.0.4.tar.xz groff-1.22.3.tar.gz
readline-6.3-upstream_fixes-3.patch
blfs-bootscripts-20150924 grub-2.02~beta2.tar.xz
sed-4.2.2.tar.bz2
blfs-bootscripts-20150924.tar.bz2 gzip-1.6.tar.xz
shadow-4.2.1.tar.xz
bzip2-1.0.6-install_docs-1.patch iana-etc-2.30.tar.bz2
strace-4.10.tar.xz
bzip2-1.0.6.tar.gz inetutils-1.9.4.tar.xz
sysklogd-1.5.1.tar.gz
check-0.10.0.tar.gz intltool-0.51.0.tar.gz
systemtap-2.9
config iproute2-4.2.0.tar.xz
systemtap-2.9.tar.gz
coreutils-8.24-i18n-1.patch kbd-2.0.3-backspace-1.patch
sysvinit-2.88dsf-consolidated-1.patch
coreutils-8.24.tar.xz kbd-2.0.3.tar.xz
sysvinit-2.88dsf.tar.bz2
curl-7.45.0.tar.lzma kmod-21.tar.xz
tar-1.28.tar.xz
dejagnu-1.5.3.tar.gz less-458.tar.gz
tcl-core8.6.4-src.tar.gz
diffutils-3.3.tar.xz lfs-bootscripts-20150222.tar.bz2
texinfo-6.0.tar.xz
e2fsprogs-1.42.13.tar.gz libcap-2.24.tar.xz
tools.tar
elfutils-0.164 libpipeline-1.4.1.tar.gz
trace-cmd
elfutils-0.164.tar.bz2 libtool-2.4.6.tar.xz
tzdata2015f.tar.gz
eudev-3.1.2.tar.gz linux-4.2
udev-lfs-20140408.tar.bz2
expat-2.1.0.tar.gz linux-4.2.tar.xz
util-linux-2.27.tar.xz
expect5.45.tar.gz m4-1.4.17.tar.xz
vim-7.4.tar.bz2
file-5.24.tar.gz make-4.1.tar.bz2
wget-1.16.3.tar.xz
findutils-4.4.2.tar.gz man-db-2.7.2.tar.xz
which-2.21.tar.gz
flex-2.5.39.tar.xz man-pages-4.02.tar.xz
XML-Parser-2.44.tar.gz
gawk-4.1.3.tar.xz md5sums
xz-5.2.1.tar.xz
gcc-5.2.0.tar.bz2 mpc-1.0.3.tar.gz
zlib-1.2.8.tar.xz
gdb-7.10.tar.xz mpfr-3.1.3.tar.xz
gdbm-1.11.tar.gz mpfr-3.1.3-upstream_fixes-1.patch
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