Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1243477

Re: BUG: unable to handle kernel paging request with v4.3-rc4

Show all headers | View raw

On Fri, Oct 09, 2015 at 09:30:40AM -0600, Alex Williamson wrote:
> I have not seen this one yet.  There literally have been no changes for
> vfio in 4.3, so if this is new, it may be collateral from changes
> elsewhere.  32bit devices really shouldn't make any difference to vfio,
> I'll see if I can reproduce it myself though.  Thanks,

Great, thanks. It looks like some sort of memory corruption to me. What
I did was trying to assign the 32bit dev together with its PCI bridge.
Probing the bridge in VFIO fails due to the first check in the probe
function and then I get the oops.

I also tried assigning other bridges, or only the bridge to the 32bit
bus, but this did not trigger the oops (but fails too, as it should).

I'll also try to debug this more.


	Joerg

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

BUG: unable to handle kernel paging request with v4.3-rc4 Joerg Roedel <joro@8bytes.org> - 2015-10-09 17:00 +0200
  Re: BUG: unable to handle kernel paging request with v4.3-rc4 Joerg Roedel <joro@8bytes.org> - 2015-10-09 17:40 +0200
  Re: BUG: unable to handle kernel paging request with v4.3-rc4 Alex Williamson <alex.williamson@redhat.com> - 2015-10-09 17:40 +0200

csiph-web