07:15 <adgud> hey, anyone know how to get around "semantic error: unable to find member 'bi_rw' for struct bio" on kernel 4.9? too many packages depend on json-c, which was suggested to be removed as a workaround

08:14 <irker039> systemtap: mcermak systemtap.git:refs/heads/mcermak/PR20333 * release-3.0-898-g27eeb6a / : merge to master (575fe913f6b6b81421f7bfda7c72ab8c15ecb8e3) http://tinyurl.com/zsws355

08:14 <irker039> systemtap: lberk systemtap.git:refs/heads/mcermak/PR20333 * release-3.0-426-g575fe91 / dwflpp.cxx loc2c.c staptree.cxx stapvirt.c tapsets.cxx translate.cxx: Fix -Wimplicit-fallthrough build errors http://tinyurl.com/jz7uugv

08:14 <irker039> systemtap: dsmith systemtap.git:refs/heads/mcermak/PR20333 * release-3.0-425-g675838c / runtime/time.c: Updated a comment in runtime/time.c. http://tinyurl.com/hgfu45w

08:14 <irker039> systemtap: fche systemtap.git:refs/heads/mcermak/PR20333 * release-3.0-424-gf90352b / staptree.h tapset-python.cxx: PR20672 prime: prevent python $var infinitely recursive expansion http://tinyurl.com/jjpzqpj

08:14 <irker039> systemtap: dsmith systemtap.git:refs/heads/mcermak/PR20333 * release-3.0-423-ge819702 / testsuite/systemtap.examples/network/nfsd-trace.stp: Add timestamp to nfsd-trace.stp example. http://tinyurl.com/zhkdu5g

09:13 <danielmeirdoron> how to I create an array of strings to search in? i.e, I want to check if a process comm or file path is within a whitelist or blacklist...

09:45 <irker039> systemtap: mcermak systemtap.git:refs/heads/master * release-3.0-789-g71a385b / : PR20333: Fix optionalness for couple of probe aliases. http://tinyurl.com/gocbzf7

09:45 <irker039> systemtap: mcermak systemtap.git:refs/heads/master * release-3.0-790-g18703bb / testsuite/buildok/nd_syscalls-arch-detailed.stp testsuite/buildok/nd_syscalls-detailed.stp testsuite/buildok/nd_syscalls2-detailed.stp testsuite/buildok/syscalls-arch-detailed.stp testsuite/buildok/syscalls-detailed.stp testsuite/buildok/syscalls2-detailed.stp: PR20333: Add new convenience variables to the buildok tests. http://tinyurl.com/jehuh

09:45 <irker039> systemtap: mcermak systemtap.git:refs/heads/master * release-3.0-791-ge6cff7f / tapset/linux/sysc_io_setup.stp: Backport commit 9b7699bf248e86933aed563a10c6c0bf27b22237 from master. http://tinyurl.com/ju7fpof

09:45 <irker039> systemtap: mcermak systemtap.git:refs/heads/master * release-3.0-792-g0d9cac8 / : Merge syscalls with identical 'name' to common files. http://tinyurl.com/hf84dn7

09:45 <irker039> systemtap: mcermak systemtap.git:refs/heads/master * release-3.0-898-g27eeb6a / : merge to master (575fe913f6b6b81421f7bfda7c72ab8c15ecb8e3) http://tinyurl.com/zsws355

10:07 <irker039> systemtap: mcermak systemtap.git:refs/heads/master * release-3.0-899-g35e8a0a / NEWS: PR20333 - The NEWS file entry. http://tinyurl.com/hv4kj4o

14:36 <franks2> semantic error: while resolving probe point: identifier 'process' http://pastebin.com/7AuXC8Xk anyone know how i can fix this?

14:39 <drsmith> franks2: I'm confused by that script. Was '@httpd' defined somewhere?

14:39 <franks2> http://pastebin.com/gK7MAUqt

14:39 <franks2> full script

14:39 <franks2> drsmith: yes

14:40 <drsmith> ok, first question - what does the following show: stap -vl 'process("/usr/sbin/apache2").mark("*")' report?

14:41 <drsmith> sorry, don't include the 'report?'

14:42 <franks2> root@snmp:~# stap -vl 'process("/usr/sbin/apache2").mark("*")'

14:42 <franks2> Pass 1: parsed user script and 111 library script(s) using 109656virt/43604res/6004shr/37708data kb, in 100usr/20sys/120real ms.

14:42 <franks2> Pass 2: analyzed script: 0 probe(s), 0 function(s), 0 embed(s), 0 global(s) using 110448virt/45576res/7020shr/38500data kb, in 0usr/0sys/4real ms.

14:42 <franks2> Tip: /usr/share/doc/systemtap/README.Debian should help you get started.

14:42 <franks2> drsmith: ^

14:43 <drsmith> ok, that means that systemtap didn't find any markers in /usr/sbin/apache2

14:43 <franks2> hmmm

14:43 <franks2> But I've installed dbgsyms

14:43 <drsmith> what version of systemtap do you have (stap -V)?

14:43 <drsmith> systemtap doesn't need debug symbols for markers (well, we would to decode some types perhaps, but not the marker itself)

14:44 <franks2> Systemtap translator/driver (version 2.9/0.165, Debian version 2.9-2ubuntu2 (xenial))

14:44 <drsmith> ok, that's fairly recent

14:44 <drsmith> let's try another way to see if there are markers in apache2

14:44 <drsmith> there's a readelf command to show the contents of the markers section, but I never can remember the command line details

14:45 <drsmith> hold on a sec and I'll try to dig it up

14:46 <drsmith> ah, there it is. Try: eu-readelf -n /usr/sbin/apache2

14:46 <franks2> root@snmp:~# readelf -x .note.stapsdt /usr/sbin/apache2

14:46 <franks2> readelf: Warning: Section '.note.stapsdt' was not dumped because it does not exist!

14:46 <franks2> oh

14:47 <drsmith> there you go - that executable doesn't have markers

14:47 <franks2> root@snmp:~# readelf -n /usr/sbin/apache2

14:47 <franks2> Displaying notes found at file offset 0x00000254 with length 0x00000020:

14:47 <franks2> Owner Data size Description

14:47 <franks2> GNU 0x00000010 NT_GNU_ABI_TAG (ABI version tag)

14:47 <franks2> OS: Linux, ABI: 2.6.32

14:47 <franks2> Displaying notes found at file offset 0x00000274 with length 0x00000024:

14:47 <franks2> Owner Data size Description

14:47 <franks2> GNU 0x00000014 NT_GNU_BUILD_ID (unique build ID bitstring)

14:47 <franks2> Build ID: 860e13690c8f6f103a34eebdbcc1047c1ae38c6e

14:47 <franks2> drsmith: does apache2 need to be re-compiled or smth?

14:49 <drsmith> franks2: Yes. To add the markers in, you'd need to recompile.

14:50 <drsmith> You also might try looking for a newer distro version that might have the markers compiled in.

14:50 <franks2> Hmm Im already on ubuntu 16.04

14:50 <drsmith> You other option would be to try to find function calls that are close to where those markers are placed and probe them instead.

14:51 <drsmith> I meant see if your distro have a newer version of apache2

14:51 <franks2> aha

14:51 <franks2> thanks for your help :-) I will look into this

14:52 <drsmith> sorry I couldn't give you a better answer

14:52 <franks2> drsmith: It will get me on the correct path! :)

15:09 <irker529> systemtap: dsmith systemtap.git:refs/heads/master * release-3.0-900-g1371bf9 / tapset/linux/arm/aux_syscalls.stp tapset/linux/arm64/aux_syscalls.stp tapset/linux/aux_syscalls.stp tapset/linux/i386/aux_syscalls.stp tapset/linux/ia64/aux_syscalls.stp tapset/linux/powerpc/aux_syscalls.stp tapset/linux/s390/aux_syscalls.stp tapset/linux/x86_64/aux_syscalls.stp: PR21101: Fix gcc7 'duplicate-decl-specifier' and 'format-truncation' e

15:13 <franks2> drsmith: https://wiki.ubuntu.com/Debug%20Symbol%20Packages#Getting_-dbgsym.ddeb_packages I thought this was for getting the systemtap support

15:31 <drsmith> franks2: There are several different probe types supported by systemtap. Some need debuginfo, some don't.

15:31 <franks2> drsmith: aha, what is the name of the "thing" i need to compile apache with?

15:32 <drsmith> I don't really know (since I've never compiled it), but I'd look for a configure option that enables markers.

15:33 <drsmith> Markers are static instrumentation points compiled into software. Debuginfo isn't needed to find the markers, but is needed to decode types (if the markers arguments include a structure for instance).

15:34 <drsmith> franks2: it also might mention dtrace, since systemtap markers are source compatible with dtrace markers

15:34 <franks2> drsmith: aha

15:35 <franks2> drsmith: thank you!

15:35 <drsmith> no problem

18:25 <irker307> systemtap: dsmith systemtap.git:refs/heads/master * release-3.0-901-g81f884b / tapset/linux/ioblock.stp: Fix PR21102 by updating the ioblock tapset. http://tinyurl.com/hyyyqub

22:21 <irker307> systemtap: dsmith systemtap.git:refs/heads/master * release-3.0-902-g773e9fd / : Update syscall probes and test cases. http://tinyurl.com/hgk8sdh