Date: Fri, 21 Dec 2007 10:50:50 GMT From: Pekka Savola <pekkas@netcore.fi> To: freebsd-gnats-submit@FreeBSD.org Subject: kern/118927: em(4) broken: link state changed to DOWN (/UP), link states coalesced errors Message-ID: <200712211050.lBLAooK0038418@www.freebsd.org> Resent-Message-ID: <200712211100.lBLB01t9071209@freefall.freebsd.org>
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>Number: 118927 >Category: kern >Synopsis: em(4) broken: link state changed to DOWN (/UP), link states coalesced errors >Confidential: no >Severity: serious >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Fri Dec 21 11:00:00 UTC 2007 >Closed-Date: >Last-Modified: >Originator: Pekka Savola >Release: 6.3-PRERELEASE >Organization: >Environment: FreeBSD sixpack.funet.fi 6.3-PRERELEASE FreeBSD 6.3-PRERELEASE #13: Fri Dec 21 10:18:44 EET 2007 root@sixpack.funet.fi:/usr/obj/usr/src/sys/SIXPACK i386 >Description: After upgrading via sources from 6.2-STABLE (Aug 7) to 6.3-PRERELEASE (snapshots from about November 29 and December 21 tested), em2 interface started spewing out the following ad infinitum: em2: 32 link states coalesced em2: link state changed to UP em2: 19 link states coalesced em2: link state changed to DOWN em2: 3 link states coalesced em2: link state changed to UP em2: 17 link states coalesced em2: link state changed to DOWN em2: link state changed to UP em2: 20 link states coalesced The link led is blinking. Fibers are not connected. Rebooting to 6.2-STABLE from Aug 7 works. This happens on an add-on card with 1000FX (multimode) adapter only. Intel cards on the same system which have UTP interface are OK. Unfortunately I had to plug off the card, but I inserted into a Linux and got the following information about it: 0b:01.0 Ethernet controller: Intel Corporation 82542 Gigabit Ethernet Controller (Fiber) (rev 02) . but I guess that should be enough to figure out what's going on. I suspect one of the em(4) driver updates broke this particular piece of hardware. >How-To-Repeat: Try to boot to a recent RELENG_6 kernel with Intel 82542 network card. >Fix: Fix not known. Using 6.2-STABLE from Aug 7 2007 does not yet introduce the problem. >Release-Note: >Audit-Trail: >Unformatted:
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