* some recent xen kernel bugs in Fedora
@ 2012-10-01 21:35 M A Young
2012-10-02 14:00 ` Konrad Rzeszutek Wilk
0 siblings, 1 reply; 2+ messages in thread
From: M A Young @ 2012-10-01 21:35 UTC (permalink / raw)
To: xen-devel; +Cc: Stefano Stabellini, Konrad Rzeszutek Wilk
There have been a few xen kernel bug reported recently in Fedora.
In https://bugzilla.redhat.com/show_bug.cgi?id=861977 someone is getting
the error WARNING: at arch/x86/xen/setup.c:88 xen_memory_setup with the
kernel 3.5.4-2.fc17.x86_64 (which is roughly 3.5.4 plus patches from the
3.5.5 patch queue including the backports of
xen/boot: Disable NUMA for PV guests 8d54db795dfb1049d45dc34f0dddbc5347ec5642
xen/boot: Disable BIOS SMP MP table search bd49940a35ec7d488ae63bd625639893b3385b97
xen/m2p: do not reuse kmap_op->dev_bus_addr 2fc136eecd0c647a6b13fcd00d0c41a1a28f35a5
plus xen-pciback-restore-pci-config-space-after-FLR.patch
In https://bugzilla.redhat.com/show_bug.cgi?id=858893 there is a NULL
pointer dereference at xennet_poll+0x94e/0xf10 in
3.6.0-0.rc2.git2.1.fc18.x86_64
There is also https://bugzilla.redhat.com/show_bug.cgi?id=859466 where
xen 4.2 does not boot on MacBook with a 3.5 kernel unless xsave=off which
seems to relate to
https://lists.fedoraproject.org/pipermail/xen/2012-August/005879.html
Michael Young
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: some recent xen kernel bugs in Fedora
2012-10-01 21:35 some recent xen kernel bugs in Fedora M A Young
@ 2012-10-02 14:00 ` Konrad Rzeszutek Wilk
0 siblings, 0 replies; 2+ messages in thread
From: Konrad Rzeszutek Wilk @ 2012-10-02 14:00 UTC (permalink / raw)
To: M A Young; +Cc: Stefano Stabellini, xen-devel
On Mon, Oct 01, 2012 at 10:35:57PM +0100, M A Young wrote:
> There have been a few xen kernel bug reported recently in Fedora.
>
> In https://bugzilla.redhat.com/show_bug.cgi?id=861977 someone is
> getting the error WARNING: at arch/x86/xen/setup.c:88
> xen_memory_setup with the kernel 3.5.4-2.fc17.x86_64 (which is
> roughly 3.5.4 plus patches from the 3.5.5 patch queue including the
> backports of
> xen/boot: Disable NUMA for PV guests 8d54db795dfb1049d45dc34f0dddbc5347ec5642
> xen/boot: Disable BIOS SMP MP table search bd49940a35ec7d488ae63bd625639893b3385b97
> xen/m2p: do not reuse kmap_op->dev_bus_addr 2fc136eecd0c647a6b13fcd00d0c41a1a28f35a5
> plus xen-pciback-restore-pci-config-space-after-FLR.patch
Oh, so that WARN was suppose to catch rather weird cases - and it did!
FYI, It was added by
xen/setup: Fix one-off error when adding for-balloon PFNs to the P2M.
Let me help figure out what the issue is.
>
> In https://bugzilla.redhat.com/show_bug.cgi?id=858893 there is a
> NULL pointer dereference at xennet_poll+0x94e/0xf10 in
> 3.6.0-0.rc2.git2.1.fc18.x86_64
That should be fixed with 3.6.0-rc5.
>
> There is also https://bugzilla.redhat.com/show_bug.cgi?id=859466
> where xen 4.2 does not boot on MacBook with a 3.5 kernel unless
> xsave=off which seems to relate to
> https://lists.fedoraproject.org/pipermail/xen/2012-August/005879.html
There was another discussion and the Fedora kernel engineers mentioned
they removed the patch that broke this. Here is the thread:
https://bugzilla.redhat.com/show_bug.cgi?id=859466
>
> Michael Young
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