Re: Starfire (Adaptec) kernel 2.6.13+ panics on AMD64 NFS server

From: Ion Badulescu
Date: Fri Sep 30 2005 - 11:46:17 EST


Hi Henrik,

On Fri, 30 Sep 2005, Hendrik Visage wrote:

Will do, but check perhaps for some 64bit uncleanes in the scatter gather stuff
that got enabled in 2.6.13 because of the GPL'd Adaptec firmware, as I
recalled some skb related stuff.

There is an easy way to disable the firmware and pretty much all the changes that went into 2.6.13: load the starfire with enable_hw_cksum=0. If you can easily reproduce this problem, try doing the above and see if you can still hit it. Maybe it's a newly introduced problem in the upper layer's SG--your other network driver simply isn't using SG so it's not affected.

It's very suspicious that the bug would be in skb_checksum_help(), since the starfire driver doesn't do anything with the skb before handing it over to skb_checksum_help(). It would mean that the upper layer handed an invalid skb to the driver, or that we have some random memory corruption somewhere.

Thanks,
Ion

--
It is better to keep your mouth shut and be thought a fool,
than to open it and remove all doubt.
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