New drm messages being logged

[Kevin Oberman]

I continue to see large numbers of:
error: [drm:pid5:i915_gem_object_unbind] *ERROR* Attempting to unbind
pinned buffer
in my security log every morning. I am not seeing any problems related to
this other than pages of errors in messages. I see them in bursts of 10 to
177 with about a dozen being most typical. The process with PID 5 (assuming
that this is what "pid5" means) is pagedaemon. This looks like it might be
significant.

Can these be ignored? And, if so, can the messages be silenced? I hate
meaningless errors messages that might distract from something more
important.

I will be updating to the most recent 10-STABLE in a few minutes (to get
security patches), so maybe they will go away.

Kevin Oberman, Network Engineer, Retired
E-mail: rkoberman at gmail.com

On Wed, Apr 1, 2015 at 9:40 AM, Kevin Oberman <rkoberman at gmail.com> wrote:

> I have been seeing a number of drm errors since the last drm MFC to
> 10-Stable. None seems to have caused any problems, but I wanted to report
> them, just in case they are of interest. The "Attempting to unbind pinned
> buffer" errors really caught my attention as there are a lot of thm and I
> had never seen them before yesterday.
>
> FreeBSD rogue 10.1-STABLE FreeBSD 10.1-STABLE #0 r280729: Thu Mar 26
> 22:49:21 PDT 2015     root at rogue:/usr/obj/usr/src/sys/GENERIC  amd64
> All ports are current. I am enabling rc6 power management:
> drm.i915.enable_rc6=5
> Mar 27 10:41:19 rogue kernel: error: [drm:pid1242:gen6_sanitize_pm]
> *ERROR* Power management discrepancy: GEN6_RP_INTERRUPT_LIMITS expected
> 1a000000, was 12000000
> Mar 27 20:06:35 rogue kernel: error: [drm:pid3355:gen6_sanitize_pm]
> *ERROR* Power management discrepancy: GEN6_RP_INTERRUPT_LIMITS expected
> 1a000000, was 12060000
> Mar 31 08:48:13 rogue kernel: error: [drm:pid5:i915_gem_object_unbind]
> *ERROR* Attempting to unbind pinned buffer
> Mar 31 08:48:13 rogue last message repeated 10 times
> Mar 31 15:38:02 rogue kernel: error: [drm:pid1242:gen6_sanitize_pm]
> *ERROR* Power management discrepancy: GEN6_RP_INTERRUPT_LIMITS expected
> 1a0d0000, was 1a000000
> Mar 31 15:49:56 rogue kernel: error: [drm:pid1242:gen6_sanitize_pm]
> *ERROR* Power management discrepancy: GEN6_RP_INTERRUPT_LIMITS expected
> 1a0d0000, was 1a000000
> Apr  1 08:57:52 rogue kernel: error: [drm:pid5:i915_gem_object_unbind]
> *ERROR* Attempting to unbind pinned buffer
> Apr  1 08:57:52 rogue last message repeated 9 times
> Apr  1 08:59:42 rogue kernel: error: [drm:pid5:i915_gem_object_unbind]
> *ERROR* Attempting to unbind pinned buffer
> Apr  1 09:01:34 rogue kernel: error: [drm:pid5:i915_gem_object_unbind]
> *ERROR* Attempting to unbind pinned buffer
> Apr  1 09:01:54 rogue last message repeated 20 times
> Apr  1 09:04:04 rogue last message repeated 51 times
> Apr  1 09:09:36 rogue last message repeated 53 times
> Apr  1 09:17:10 rogue last message repeated 11 times
> --
> Kevin Oberman, Network Engineer, Retired
> E-mail: rkoberman at gmail.com
>