<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - [KVM][GVT-d] [BDW & SKL ]Ubuntu 16.04 guest boot up with kernel panic with the newest 4.9.0+ drm-intel kernel" href="https://bugs.freedesktop.org/show_bug.cgi?id=99025#c21">Comment # 21</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - [KVM][GVT-d] [BDW & SKL ]Ubuntu 16.04 guest boot up with kernel panic with the newest 4.9.0+ drm-intel kernel" href="https://bugs.freedesktop.org/show_bug.cgi?id=99025">bug 99025</a> from <a class="email" href="mailto:terrence.xu@intel.com" title="Terrence Xu <terrence.xu@intel.com>"> Terrence Xu</a> <pre>(In reply to Tomeu Vizoso from <a href="show_bug.cgi?id=99025#c20">comment #20</a>) > (In reply to Terrence Xu from <a href="show_bug.cgi?id=99025#c19">comment #19</a>) > > Created <a href="attachment.cgi?id=129619" name="attach_129619" title="dmesg-guest-full-20170214-drm-tip: 2017y-02m-14d-22h-44m-17s">attachment 129619</a> <a href="attachment.cgi?id=129619&action=edit" title="dmesg-guest-full-20170214-drm-tip: 2017y-02m-14d-22h-44m-17s">[details]</a> > > dmesg-guest-full-20170214-drm-tip: 2017y-02m-14d-22h-44m-17s > > > > Update the full guest dmesg log for drm-nightly-2017-02-14 version. > > Thanks! > > Today won't be able to get back to this, but in the meantime, could you > please see what happens when you boot with i915.enable_rc6=0? With the same result and the same error log as previously. > Also, could you figure out which code line is causing the oops? The null pointer is triggered by function "reset_common_ring" Line #1395 in "intel_lrc.c", as below: if (request->ctx !=port[0].request->ctx) , the port[0].request->ctx is Null.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are on the CC list for the bug.</li> <li>You are the QA Contact for the bug.</li> <li>You are the assignee for the bug.</li> </ul> </body> </html>