[rsyslog] rsyslog 1.19.7 released
rgerhards at hq.adiscon.com
Thu Sep 27 10:17:13 CEST 2007
I just noticed that I had not replied. I looked at the code, but there
is too few information to track the source code location down. What I
currently assume is
a) that we still have a segfault issue (obviously ;))
b) the segfault is a moving target
The segfault occurs due to memory corruption. I think (and have often
seen) that you do not notice the corruption until it happens to hit some
really important piece of memory. So in many cases, it will overwrite
something that nobody cares about. Only if some specific structures are
hit, a malfunction manifests. This is part of the problem to reproducing
it. What is hit, depends on the memory layout. A new version leads to
different memory layout.
I assume this is what has happened here: you did not experience the bug
before, because it hit some memory that wasn't really relevant. With the
new versions memory layout, it hits somewhere where it hurts... At least
this is my best guess.
I'd appreciate if you could try out the 1.19.8 release. I suspect it
will also segfault. If it does, it would be great if you could run it in
debug mode (-d -n) and send me the output before it segfault (maybe 200
lines or so).
> -----Original Message-----
> From: rsyslog-bounces at lists.adiscon.com [mailto:rsyslog-
> bounces at lists.adiscon.com] On Behalf Of Michael Mansour
> Sent: Tuesday, September 25, 2007 3:41 PM
> To: rsyslog-users
> Subject: Re: [rsyslog] rsyslog 1.19.7 released
> Hi Rainer,
> > Hi all,
> > Rsyslog 1.19.7 (the official one) has been released today. It
> > contains some code updated compared to the version from yesterday,
> > so please download it if you already did.
> I've just downloaded and installed this release, and although I've
> experienced the segfault issue (rsyslog continually runs fine for me),
> when I
> installed this version and then did a:
> # service rsyslog restart
> I got this in my messages file:
> Sep 25 22:41:46 server kernel: Kernel logging (proc) stopped.
> Sep 25 22:41:46 server kernel: Kernel log daemon terminating.
> Sep 25 22:41:47 server rsyslog: rklogd shutdown succeeded
> Sep 25 22:41:47 server rsyslogd: [origin software="rsyslogd"
> swVersion="1.19.7" x-pid="12176"] exiting on signal 15.
> Sep 25 22:44:08 server rsyslogd: [origin software="rsyslogd"
> swVersion="1.19.7" x-pid="10430"][x-configInfo udpRecep
> tion="No" udpPort="514" tcpReception="No" tcpPort="0"] restart
> Sep 25 22:44:08 server rsyslog: rsyslogd startup succeeded
> Sep 25 22:44:08 server kernel: rklogd 1.19.7, log source = /proc/kmsg
> Sep 25 22:44:08 server kernel: rsyslogd: segfault at
> rip 00000038c7568678 rsp 0000007fbfffdc2
> 0 error 4
> Sep 25 22:44:08 server rsyslog: rklogd startup succeeded
> Sep 25 22:44:08 server rsyslog: rsyslogd shutdown succeeded
> The above machine is a DL380 G4 with one CPU running hypthreaded. On
> machine that's the same as that:
> Sep 25 22:42:24 server2 kernel: Kernel logging (proc) stopped.
> Sep 25 22:42:24 server2 kernel: Kernel log daemon terminating.
> Sep 25 22:42:25 server2 rsyslog: rklogd shutdown succeeded
> Sep 25 22:42:25 server2 rsyslogd: [origin software="rsyslogd"
> swVersion="1.19.7" x-pid="28497"] exiting on signal 15
> Sep 25 22:43:43 server2 rsyslogd: [origin software="rsyslogd"
> swVersion="1.19.7" x-pid="16598"][x-configInfo udpRece
> ption="No" udpPort="514" tcpReception="No" tcpPort="0"] restart
> Sep 25 22:43:43 server2 rsyslog: rsyslogd startup succeeded
> Sep 25 22:43:43 server2 kernel: rklogd 1.19.7, log source = /proc/kmsg
> Sep 25 22:43:43 server2 kernel: rsyslogd: segfault at
> rip 00000034d2868678 rsp 0000007fbfffd
> c20 error 4
> Sep 25 22:43:43 server2 rsyslog: rklogd startup succeeded
> Those two machines above are also running 64bit Linux.
> Using the same process on other 32 bit linux servers (DL360's), no
> Note that I have never (ever) had rsyslog crash on me while it's
> running, and
> I currently run it on 6 servers to do the MySQL logging.
> > Rsyslog 1.19.7 is a code cleanup, bug fixing and maintenance
> > Its primary goal is enhanced stability. Feature-wise, it offers
> > of dropping NUL characters, which are often found at the end of
> > invalidly formatted syslog messages. Upgrading to this release is
> > recommended for all users.
> > Changelog:
> > http://www.rsyslog.com/Article129.phtml
> > Download:
> > http://www.rsyslog.com/Downloads-req-getit-lid-59.phtml
> > PLEASE NOTE: the rsyslog site is currently migrated to a new
> > machine. In case you receive a temporary page, your DNS still caches
> > the old machine's address.
> > As always, feedback is appreciated. Feedback is especially
> > appreciated from those that have experienced the segfault problem in
> > the past.
> > Rainer Gerhards
> > _______________________________________________
> > rsyslog mailing list
> > http://lists.adiscon.net/mailman/listinfo/rsyslog
> ------- End of Original Message -------
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