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Re: (no subject)


From: Steven Sturges <steve.sturges () sourcefire com>
Date: Mon, 21 Jun 2010 13:05:57 -0400

Thanks, David.

We'll have a look at this.  Any chance you can send us the
core file for some additional debugging on our side?

Patterson, David R (IHS/HQ) wrote:
Hello,

I came into work this morning to discover my snort box had core dumped this weekend.

System Architecture (x86)
Operating System and version (FreeBSD 7.3_RELEASE)
Version of Snort (2.8.6)
What preprocessors you loaded (The default preprocessors enabled in snort.conf.  A couple might have some changes.)
What rules (if any) you were using (which ever rules are enabled by default from snortrules-snapshot-2860.tar.gz plus 
local_rules add by me)
What output plug-ins you loaded (writing to /var/log/snort/alert and /var/log/snort/snort.log.xxxxxxxxxxx)
What command line switches you were using (snort -b -D -i em1 -c /usr/local/etc/snort/snort.conf)
Any Snort error messages:
Jun 18 18:02:55 hqw_snort snort[4779]: S5: Session exceeded configured max bytes to queue 1048576 using 1049588 bytes 
(server queue). XXX.YYY.ZZZ.AAA 59485 --> XXX.YYY.TTT.UUU 3225 (0) : LWstate 0xf LWFlags 0x6007
Jun 20 09:54:32 hqw_snort kernel: pid 4779 (snort), uid 0: exited on signal 11 (core dumped)

Followed these commands:
1) At the command prompt, type 'gdb snort snort.core'.  This will
load snort and the core file into the GNU debugger.  You may need
to give the path to the snort binary file, and your core file might
have a different name (like "core" or something).
2) At the (gdb) prompt, type 'bt' (without the quotes).
3) At the (gdb) prompt, type 'quit'.  This will return you to your
shell.
4) Cut and paste the output from gdb into the email you send me!

Here is the output from the above bt command:
(gdb) bt
#0  check_ftp (ftpssn=0x291f9780, p=0xbfbfe458, iMode=2) at pp_ftp.c:1150
#1  0x283b657d in SnortFTP (GlobalConf=0x28415d60, FTPSession=0x291f9780, p=0xbfbfe458, iInspectMode=2)
    at snort_ftptelnet.c:4097
#2  0x283b68aa in SnortFTPTelnet (p=0xbfbfe458) at snort_ftptelnet.c:4256
#3  0x283b7161 in FTPTelnetChecks (pkt=0xbfbfe458, context=0x0) at spp_ftptelnet.c:160
#4  0x08074466 in Preprocess (p=0xbfbfe458) at detect.c:172
#5  0x08069c9c in ProcessPacket (user=0x0, pkthdr=0xbfbfebac, pkt=0x29f212e2 "", ft=0x0) at snort.c:1568
#6  0x0806c5ff in PcapProcessPacket (user=0x0, pkthdr=0xbfbfebac, pkt=0x29f212e2 "") at snort.c:1055
#7  0x2823d9ae in pcap_create () from /usr/local/lib/libpcap.so.1
#8  0x2823dd37 in pcap_dispatch () from /usr/local/lib/libpcap.so.1
#9  0x0806ead1 in SnortMain (argc=7, argv=0xbfbfec94) at snort.c:2980
#10 0x0806efdd in main (argc=0, argv=0x0) at snort.c:625
(gdb) quit

Thanks!

David Patterson


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