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

[Ion Badulescu <ionut@badula.org>]

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.