Fedora 7 Test Update: kernel-2.6.22.2-52.fc7
Michal Jaegermann
michal at harddata.com
Mon Aug 13 20:09:00 UTC 2007
On Mon, Aug 13, 2007 at 03:36:22PM -0400, Dave Jones wrote:
> On Mon, Aug 13, 2007 at 03:34:23PM -0400, Dave Jones wrote:
> > On Mon, Aug 13, 2007 at 12:11:08PM -0600, Michal Jaegermann wrote:
> > > On Mon, Aug 13, 2007 at 10:01:02AM -0700, updates at fedoraproject.org wrote:
> > > > --------------------------------------------------------------------------------
> > > > Fedora Test Update Notification
> > > > FEDORA-2007-1549
> > > > 2007-08-13 09:58:54.176915
> > > > --------------------------------------------------------------------------------
> > > >
> > > > Name : kernel
> > > > Product : Fedora 7
> > > > Version : 2.6.22.2
> > > > Release : 52.fc7
> > > ....
> > > >
> > > > Detect broken timers on some AMD dual-core machines: fixes
> > > > hangs and failure to boot.
> > >
> > > My x86_64 test machine is actually a single core. This kernel,
> > > grabbed from koji, prints for me "agpgart: Detected AGP bridge 0"
> > > line and immediately reboots. Something like 'boot_delay=200' is
> > > required to see that or otherwise you are looking at rebooting
> > > machine right away. On some occasions a machine may hang in a
> > > reboot and requires a powerdown.
> >
> > Does booting with agp=off get past that?
>
> Also initcall_debug would be useful to add, just to be sure that
> we're not dying in something immediately after AGP.
Yes, booting with 'agp=off' succeeds but running a graphics desktop
in this state is painful. :-) See bz #249174.
With initcall_debug I see
....
calling initcall 0xffffffff814291d6: pci_iommu_init+0x0/0x17()
agpgart: Detected AGP bridge 0
and a machine locks up instead of rebooting.
I believe that this is another instance of
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=249174
Yesterday I posted there in comments 21 and 22 pictures of
backtraces from 2.6.22.1-32.fc6 on the same hardware. That kernel,
for a change, gets "invalid opcode" and produces a trace instead of
just going away in some fashion. Timings on PCI reads?
Michal
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