<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_REOPENED " title="REOPENED - Kernel "NULL pointer dereference" with MST monitor on HSW" href="https://bugs.freedesktop.org/show_bug.cgi?id=97666#c33">Comment # 33</a> on <a class="bz_bug_link bz_status_REOPENED " title="REOPENED - Kernel "NULL pointer dereference" with MST monitor on HSW" href="https://bugs.freedesktop.org/show_bug.cgi?id=97666">bug 97666</a> from <a class="email" href="mailto:ville.syrjala@linux.intel.com" title="Ville Syrjala <ville.syrjala@linux.intel.com>"> Ville Syrjala</a> <pre>(In reply to Carlos Santa from <a href="show_bug.cgi?id=97666#c32">comment #32</a>) > Hi Ville, > > I tested the following 3 patches on today's drm-nightly: > > 1. drm/i915: Refresh that status of MST capable connectors in ->detect() > 2. drm/fb-helper: Fix connector ref leak on error > 3. drm/fb-helper: Keep references for the current set of used connectors > > You're right, after applying #1, the null pointer issue comes back but after > applying #2, and doing the display power on/off to repro the bug, the system > freezes and never comes back again. Same behavior if then applying patch #3 > on top, which is supposed to be the fix. Freezes hard enough to not leave a trace in netconsole/serial etc. ? Logs would be nice.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are on the CC list for the bug.</li> </ul> </body> </html>