Date: Fri, 22 Oct 2004 00:17:29 +0100 From: Juan Rodriguez <juan.fco.rodriguez@gmail.com> To: freebsd-net@freebsd.org Subject: if_ed.c "NIC memory corrupt - invalid packet length" error Message-ID: <96b30c400410211617466e7ea9@mail.gmail.com>
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Hello, I'm getting this error now and then, so I've tried to look at the file "if_ed.c" where the message is printed to sort it out... I'd be glad if somebody could tell me what's the reason of this line inside "ed_rint()" function: /* * because buffers are aligned on 256-byte boundary, * the length computed above is off by 256 in almost * all cases. Fix it... */ if (len & 0xff) len -= 256 ; I wonder what can happen here if we've got a length value that is less than 256. We could end up with a negative value... could it be this the source that causes the problem ? PS: I'm kinda newbie so I might be saying stupid things! :) Thanks
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