Date: Thu, 19 Aug 2010 14:00:58 +0100 From: Pete French <petefrench@ticketswitch.com> To: FreeBSD-gnats-submit@FreeBSD.org Subject: kern/149804: ICMP redirect on causes "panic: rtqkill route really not free" Message-ID: <E1Om4jq-00074C-Mz@dilbert.ticketswitch.com> Resent-Message-ID: <201008191310.o7JDA3p8034196@freefall.freebsd.org>
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>Number: 149804 >Category: kern >Synopsis: ICMP redirect on causes "panic: rtqkill route really not free" >Confidential: no >Severity: serious >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Thu Aug 19 13:10:03 UTC 2010 >Closed-Date: >Last-Modified: >Originator: Pete French >Release: FreeBSD 8.1-STABLE amd64 >Organization: Ticket Switch Ltd >Environment: System: FreeBSD dilbert.rattatosk 8.1-STABLE FreeBSD 8.1-STABLE #1: Tue Aug 17 12:30:13 BST 2010 petefrench@dilbert.rattatosk:/usr/obj/usr/src/sys/GENERIC amd64 >Description: Running 8.1 in an environment with multiple routers that issue ICMP redirects can cause the system to panic with the message given in the subject line. >How-To-Repeat: Install an 8.1 machine intp an envir0onment as above - I have not found a reliable way to reporduce it, but in our case it crashes within a few days. >Fix: setting net.inet.icmp.drop_redirect=1 will prevent this. There is also a patch from Xin LI which appears to fix the problem (or at least mitigate it to the point where we havent seen it since it was applied) >Release-Note: >Audit-Trail: >Unformatted:
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