On Thu, 18 Oct 2007, Jeff Garzik wrote: > > Is this a sata_mv box? If so, could you try this patch?
That could explain it: if the SG allocation is simply too small, the scatter-gather code will run off the end of the SG list, and encounter random uninitialized entries, and if any of those have the low bit set, they will be considered to be "link" entries, and the SG list goes wild. That SG code is really pretty fragile. I don't see it *ever* checking that the SG allocation is large enough when it fills it in. And these things take the sizes from different places (ie "cmd->use_sg" bs "req->nr_phys_segments" vs God knows what else..) Linus - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/