Bug with Command:: sadc
Located:: /usr/lib/sa/sadc
Date: Mon Dec 3 21:01:19 GMT 2001
Program: sadc (/usr/lib/sa/sadc)
Problem: Segmentation fault
DESCRIPTION (from man)
The sadc command samples system data a specified number of
times ( count ) at a specified interval measured in sec
onds ( interval ).
The sadc command is intended to be used as a backend to
the sar command.
The proc filesystem must be mounted for the sadc command to work.
/var/log/sa/sadd --> daily report file.
I don't know much about this command except it is run with system level
privileges by executing /usr/lib/sa/sadc [if you have it on your system].
I'm not sure if this command is occasionally run by root from a default
install (i.e redhat 7.1) since I have had not time at all to look into it.
If anyone knows more about the system usage of this program, there comments
would be greatly appreciated.
See below for shell examples.
-----------------------------------------------
[smackenz@mainframe smackenz]$ id
uid=1001(smackenz) gid=1001(smackenz) groups=1001(smackenz)
[smackenz@mainframe smackenz]$ /usr/lib/sa/sadc
Cannot open /var/log/sa/sa03: Permission denied
<log files.....>
smackenz@mainframe smackenz]$ ps aux |grep sadc
smackenz 1608 0.0 0.2 1732 592 pts/1 R 21:14 0:00 grep sadc
<not running at all....>
Following this as user 'smackenz' I carried out the following commands:
[smackenz@mainframe smackenz]$ /usr/lib/sa/sadc `perl -e 'print "A" x 200'`
[smackenz@mainframe smackenz]$ /usr/lib/sa/sadc `perl -e 'print "A" x 210'`
[smackenz@mainframe smackenz]$ /usr/lib/sa/sadc `perl -e 'print "A" x 220'`
[smackenz@mainframe smackenz]$ /usr/lib/sa/sadc `perl -e 'print "A" x 230'`
[smackenz@mainframe smackenz]$ /usr/lib/sa/sadc `perl -e 'print "A" x 240'`
[smackenz@mainframe smackenz]$ /usr/lib/sa/sadc `perl -e 'print "A" x 250'`
[smackenz@mainframe smackenz]$ /usr/lib/sa/sadc `perl -e 'print "A" x 260'`
Cannot open
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA:
File name too long
[smackenz@mainframe smackenz]$ /usr/lib/sa/sadc `perl -e 'print "A" x 270'`
Cannot open
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA:
File name too long
etc.... until
[smackenz@mainframe smackenz]$ /usr/lib/sa/sadc `perl -e 'print "A" x 290'`
Segmentation fault (core dumped)
-------------------------------------------------------
Later
Scott.
This archive was generated by hypermail 2b30 : Mon Dec 03 2001 - 16:59:43 PST