Bugtraq mailing list archives
Re: Flaw in 3c59x.c or in Kernel?
From: jp () MARTINET COM (Jonathan Poole)
Date: Wed, 5 Jan 2000 14:03:14 -0500
I have found that it's a problem in the original 3c905 NIC, and the 3com 905B, I seem to have resolved my issues with buying a 3com905C. I found that the HARDWARE not the software, is broke with 905B's (IE can't handle cross over, and doesn't negotiate properly), However Setting the Ethernet MTU's at 1477 was probably tyhe base of my issue (Yes, I am a PppoE lewser, from annoying uplink sympatico.ca that forces pppoe) I think this not necessarily a driver issue, but a hardware issue. The revisions on the NIC's have been changing, and it would be a great card, if it was originally introduced as a 905C, not a B or original. Jonathan Poole. On Wed, 5 Jan 2000, Sonny Parlin wrote:
The only problem I have with ifconfiging down/up is that every time I've run my test, the machine completely locks, no keyboard, no nothing... So ifconfig is not an option at that point. Unfortunately, when it crashes, it crashes BIG. Also, I should have mentioned in my first mail that when using the 3com driver, this problem goes away. I haven't had a chance to look at the differences yet, but I'm sure someone will now.. I don't believe the 3com driver ships with any distros (well, at least not redhat), so it's still a pretty serious problem to consider. -Sonny -----Original Message----- From: dwmalone () maths tcd ie [mailto:dwmalone () maths tcd ie] Sent: Wednesday, January 05, 2000 5:43 AM To: Sonny Parlin Cc: BUGTRAQ () SECURITYFOCUS COM Subject: Re: Flaw in 3c59x.c or in Kernel? On Tue, Jan 04, 2000 at 09:21:36AM -0500, Sonny Parlin wrote:eth1: Too much work in interrupt, status e481. Temporarily disabling functions(7b7e).We saw this with some Linux machines in college that were connected to busy 100Mb/s ethernet. Bill Paul is right when he says ifconfiging down and then up fixes the hang. To work around the problem we changed max_interrupt_work from 20 to 200 and I don't think they've seen any hangs since. (You can find this in the .c file for the driver). These machines were also seeing hard lockups - keyboard stopped responding. This seemed to stop too when we upped this variable. David.
Current thread:
- Flaw in 3c59x.c or in Kernel? Sonny Parlin (Jan 04)
- Re: Flaw in 3c59x.c or in Kernel? Raymond Dijkxhoorn (Jan 04)
- Re: Flaw in 3c59x.c or in Kernel? Bill Paul (Jan 04)
- Re: Flaw in 3c59x.c or in Kernel? danny (Jan 04)
- userhelper/PAM exploit Derek Callaway (Jan 04)
- Re: Flaw in 3c59x.c or in Kernel? Raymond Dijkxhoorn (Jan 05)
- Re: Flaw in 3c59x.c or in Kernel? David Malone (Jan 05)
- Re: Flaw in 3c59x.c or in Kernel? Sonny Parlin (Jan 05)
- Re: Flaw in 3c59x.c or in Kernel? Jonathan Poole (Jan 05)
- Re: Flaw in 3c59x.c or in Kernel? Pug Bainter (Jan 05)
- Re: Flaw in 3c59x.c or in Kernel? Sonny Parlin (Jan 05)
- <Possible follow-ups>
- FW: Flaw in 3c59x.c or in Kernel? William R. Lorenz (Jan 05)