<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - [SKL]igt/gem_concurrent_blit subcase sporadically causes system hang and *ERROR* blitter: timed out waiting for forcewake ack to clear." href="https://bugs.freedesktop.org/show_bug.cgi?id=89959#c33">Comment # 33</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - [SKL]igt/gem_concurrent_blit subcase sporadically causes system hang and *ERROR* blitter: timed out waiting for forcewake ack to clear." href="https://bugs.freedesktop.org/show_bug.cgi?id=89959">bug 89959</a> from <a class="email" href="mailto:christophe.prigent@intel.com" title="cprigent <christophe.prigent@intel.com>"> cprigent</a> <pre>Tested again on SKL-S after a full power cycle (last time I first reproduced the GPU hang with last version of igt, reset was not enough). Test works several times (from 4 to 10 iterations) then GPU hang is reproduced. Aug 14 04:44:18 qa-Skylake-Client-platform kernel: [ 235.831098] [drm] stuck on render ring Aug 14 04:44:18 qa-Skylake-Client-platform kernel: [ 235.831101] [drm] stuck on bsd ring Aug 14 04:44:18 qa-Skylake-Client-platform kernel: [ 235.831102] [drm] stuck on blitter ring Aug 14 04:44:18 qa-Skylake-Client-platform kernel: [ 235.831104] [drm] stuck on video enhancement ring Aug 14 04:44:18 qa-Skylake-Client-platform kernel: [ 235.831601] [drm] GPU HANG: ecode 9:0:0x85d7fffb, in gem_concurrent_ [4417], reason: Ring hung, action: reset Aug 14 04:44:18 qa-Skylake-Client-platform kernel: [ 235.831666] [drm] GPU hangs can indicate a bug anywhere in the entire gfx stack, including userspace. Aug 14 04:44:18 qa-Skylake-Client-platform kernel: [ 235.831667] [drm] Please file a _new_ bug report on bugs.freedesktop.org against DRI -> DRM/Intel Aug 14 04:44:18 qa-Skylake-Client-platform kernel: [ 235.831669] [drm] drm/i915 developers can then reassign to the right component if it's not a kernel issue. Aug 14 04:44:18 qa-Skylake-Client-platform kernel: [ 235.831670] [drm] The gpu crash dump is required to analyze gpu hangs, so please always attach it. Aug 14 04:44:18 qa-Skylake-Client-platform kernel: [ 235.831671] [drm] GPU crash dump saved to /sys/class/drm/card0/error Aug 14 04:44:19 qa-Skylake-Client-platform kernel: [ 236.536375] [drm:gen8_do_reset [i915]] *ERROR* bsd ring: reset request timeout Aug 14 04:44:19 qa-Skylake-Client-platform kernel: [ 236.538521] drm/i915: Resetting chip after gpu hang Aug 14 04:44:19 qa-Skylake-Client-platform kernel: [ 236.538535] [drm:i915_reset [i915]] *ERROR* Failed to reset chip: -5</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>