Date: Tue, 5 Apr 2005 08:55:48 +0800 (CST) From: Tai-hwa Liang <avatar@mmlab.cse.yzu.edu.tw> To: pcasidy@casidy.com Cc: freebsd-current@freebsd.org Subject: Re: Panic: Use-after-free in bfe Message-ID: <0504050824357.14125@www.mmlab.cse.yzu.edu.tw> In-Reply-To: <20050404083811.979EAB86C@smtp.casidy.net> References: <20050404083811.979EAB86C@smtp.casidy.net>
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On Mon, 4 Apr 2005 pcasidy@casidy.com wrote: > On 16 Mar, Tai-hwa Liang wrote: >> >> Not sure about the reason of the interrupt storm you observed; however, >> the link down problem sounds like some sort of switch incompatibility to me. >> I remembered that someone said that manually tweak the media type *may* >> be a possible workaround(i.e. "ifconfig bfe0 media 10baseT/UTP" or >> "ifconfig bfe0 media 100baseTX). >> >> Does direct connect through crossover cable to another computer work >> for you? > > Sorry for the delay, had to deal with another network problem. > > I performed the tests you suggested and here are the results: > > I used a crossover cable to link my laptop and my server. > The server is equipped with a <RealTek 8169S Single-chip Gigabit Ethernet> > configured as autoselect. > > I tried to force the media both 10 and 100 on both card and the only > case i had the Broadcom card active was when I set the server NIC to > 100. But in that case, the RealTek NIC was not active. > Maybe I have to change the NIC on the server :( I suggest that using other NIC rather than RealTek to test this(I have tried this gigabit card once on my firewall box and it didn't seem to able to co-exist with another two NIC's, if_vr and if_rl). Though it still sounds like that we might miss some magic register settings related to link speed negotiation. I'm still curious: does your card work with Linux(any Live CD such like KNOPPIX is enough)? > The other tests I did besides the previous one was to boot in Safe mode > and to unload usb. > > Now, I don't know what to do. Me neither.... Maybe you would like to file another PR and have it Cc'ed to wpaul@ and dmlb@ since they are more familiar with if_bfe than I am. > Thanks for the fix anyway ;) No problem. Thank you for doing these tests and bringing this up to our attention. -- Cheers, Tai-hwa Liang
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