Description of problem: Null dereference in kernel when performing firewall test (port scanning from http://crucialtests.com). Kernel keeps running. Version-Release number of selected component (if applicable): Name : kernel Relocations: (not relocatable) Version : 2.6.22.1 Vendor: Red Hat, Inc. Release : 32.fc6 Build Date: śro 01 sie 2007 20:32:05 CEST Install Date: czw 16 sie 2007 18:45:47 CEST Build Host: ls20-bc1-13.build.redhat.com Group : System Environment/Kernel Source RPM: kernel-2.6.22.1-32.fc6.src.rpm Size : 46898185 License: GPLv2 Signature : DSA/SHA1, czw 09 sie 2007 16:07:00 CEST, Key ID b44269d04f2a6fd2 Packager : Red Hat, Inc. <http://bugzilla.redhat.com/bugzilla> How reproducible: Don't know. crucialtests.com offers only one test for free. Steps to Reproduce: 1. take a host with fc6, with public IP, no firewall and some services running. 2. register at crucialtests.com 3. order a standard online security check (safe mode) 4. check the syslog output Actual results: Oops Expected results: Clear log, probably. Additional info:
Created attachment 161759 [details] tail -200 /var/log/messages; service --status-all
Can you get a dump of the packets that cause this? It would probably have to be run on a separate machine to capture the full trace.
Fix in kernel-2.6.22.6-55.fc6
http://www.mail-archive.com/netdev@vger.kernel.org/msg47045.html http://www.mail-archive.com/netdev@vger.kernel.org/msg45862.html
The discussion points to this commit as being when this was broken: http://www.mail-archive.com/git-commits-head@vger.kernel.org/msg08795.html Therefore since Sun Mar 25 20:10:56 2007 and didn't affect 2.6.18 base (and we didn't patch this in) So this issue does not affect the kernels as part of Red Hat Enterprise Linux 2.1, 3, 4, or 5.