Re: repeatable panic on pageout with 945GM

On 06/04/16 15:02, Konstantin Belousov wrote: > On Sat, Jun 04, 2016 at 02:59:01PM -0400, Michael Butler wrote: >> On 06/04/16 13:47, Konstantin Belousov wrote: >> >> [ .. snip .. ] >> >>> I believe that this is a bug in amd64 pmap. Fictitious pages are not >>> promoted, in particular, the

Re: repeatable panic on pageout with 945GM

On 06/04/16 15:02, Konstantin Belousov wrote: > On Sat, Jun 04, 2016 at 02:59:01PM -0400, Michael Butler wrote: >> On 06/04/16 13:47, Konstantin Belousov wrote: >> >> [ .. snip .. ] >> >>> I believe that this is a bug in amd64 pmap. Fictitious pages are not >>> promoted, in particular, the

Re: repeatable panic on pageout with 945GM

On Sat, Jun 04, 2016 at 02:59:01PM -0400, Michael Butler wrote: > On 06/04/16 13:47, Konstantin Belousov wrote: > > [ .. snip .. ] > > > I believe that this is a bug in amd64 pmap. Fictitious pages are not > > promoted, in particular, the pv_table array does not span over the > > dynamically

Re: repeatable panic on pageout with 945GM

On 06/04/16 13:47, Konstantin Belousov wrote: [ .. snip .. ] > I believe that this is a bug in amd64 pmap. Fictitious pages are not > promoted, in particular, the pv_table array does not span over the > dynamically registered fictitious ranges. As result, pa_to_pvh() returns > garbage and pvh

Re: repeatable panic on pageout with 945GM

> > I believe that this is a bug in amd64 pmap. Fictitious pages are not > promoted, in particular, the pv_table array does not span over the > dynamically registered fictitious ranges. As result, pa_to_pvh() returns > garbage and pvh must not be accessed in the case of 'small_mappings'

Re: repeatable panic on pageout with 945GM

On Sat, Jun 04, 2016 at 10:02:33AM -0700, Matthew Macy wrote: > > > > > > > > This "band-aid" seems to have worked. I haven't had a single panic since > > - Thanks! :-) > > > > I tried to compile with -O0 but, for some reason, it panics in the sound > > driver with a

Re: repeatable panic on pageout with 945GM

> > This "band-aid" seems to have worked. I haven't had a single panic since > - Thanks! :-) > > I tried to compile with -O0 but, for some reason, it panics in the sound > driver with a double-fault. When I get time, I'll recompile only the > files involved and see if I can't

Re: repeatable panic on pageout with 945GM

On 06/02/16 22:31, Matthew Macy wrote: > Tell me if that makes any difference. > > -M > > > On Thu, 02 Jun 2016 16:55:53 -0700 K. Macy wrote > > > It looks like it might be trying to remove mappings for a page that > doesn't > > have any. It's a bit odd.

Re: repeatable panic on pageout with 945GM

> > Slight variation -won't build as above; trying with "pmap_page_is_mapped(m)" > Oops copy pasta + serious fatigue. But you got the right idea. -M ___ freebsd-current@freebsd.org mailing list

Re: repeatable panic on pageout with 945GM

On 06/02/16 22:31, Matthew Macy wrote: > Tell me if that makes any difference. > > -M > > > On Thu, 02 Jun 2016 16:55:53 -0700 K. Macy wrote > > > It looks like it might be trying to remove mappings for a page that > doesn't > > have any. It's a bit odd.

Re: repeatable panic on pageout with 945GM

Tell me if that makes any difference. -M On Thu, 02 Jun 2016 16:55:53 -0700 K. Macy wrote > It looks like it might be trying to remove mappings for a page that doesn't > have any. It's a bit odd. Likely a bug in cdev_pager_free_page or gem > release mmap.

Re: repeatable panic on pageout with 945GM

It looks like it might be trying to remove mappings for a page that doesn't have any. It's a bit odd. Likely a bug in cdev_pager_free_page or gem release mmap. Compile the kernel and driver with -O0 and look at the page. It's too bad I don't support AGP yet with DRM 4.6. Maybe in a week or two.

Re: repeatable panic on pageout with 945GM

On 05/23/16 21:10, Michael Butler wrote: > On 05/22/16 09:58, Michael Butler wrote: >> With KDE and compositing enabled, I randomly get the following: >> >> (kgdb) info stack >> #0 doadump (textdump=) at pcpu.h:221 >> #1 0x8064e98e in kern_reboot (howto=260) at >>

Re: repeatable panic on pageout with 945GM

On 05/22/16 09:58, Michael Butler wrote: > With KDE and compositing enabled, I randomly get the following: > > (kgdb) info stack > #0 doadump (textdump=) at pcpu.h:221 > #1 0x8064e98e in kern_reboot (howto=260) at > /usr/src/sys/kern/kern_shutdown.c:366 > #2 0x8064eea1 in

repeatable panic on pageout with 945GM

With KDE and compositing enabled, I randomly get the following: (kgdb) info stack #0 doadump (textdump=) at pcpu.h:221 #1 0x8064e98e in kern_reboot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:366 #2 0x8064eea1 in vpanic (fmt=, ap=) at /usr/src/sys/kern/kern_shutdown.c:759