<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_REOPENED " title="REOPENED - [sna suse] ddx assertion hits" href="https://bugs.freedesktop.org/show_bug.cgi?id=70461#c128">Comment # 128</a> on <a class="bz_bug_link bz_status_REOPENED " title="REOPENED - [sna suse] ddx assertion hits" href="https://bugs.freedesktop.org/show_bug.cgi?id=70461">bug 70461</a> from <a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> Chris Wilson</a> <pre>As expected it says the kernel failed to idle the bo when we tried to move it to the CPU write domain: [ 2836.327] kgem_bo_sync__cpu: handle=21 [ 2836.327] __kgem_busy: handle=21, busy=0, wedged=0 [ 2836.327] kgem_bo_sync__cpu: SYNC: handle=21, needs_flush? 1, domain? 3, busy ? 0 [ 2836.327] __kgem_busy: handle=21, busy=0, wedged=0 [ 2836.327] kgem_bo_retire: retiring bo handle=21 (needed flush? 1), rq? 1 [bus y?=0] [ 2836.327] __kgem_retire_requests_upto(handle=21) [ 2836.327] __kgem_retire_rq: request 1 complete [ 2836.327] __kgem_bo_flush: handle=21, busy=65536, wedged=0 [ 2836.327] __kgem_bo_flush: moving 21 to flushing [ 2836.327] __kgem_retire_rq: movied 21 to flushing Hmm, at the time it should not have been accessible by any other client, but at some point in its past the handle was exported. This will prevent this assertion from triggering (by papering over the bug): commit 3656bcf01e78554aaeafc11ecebb0caf7dd12713 Author: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>> Date: Mon Oct 19 09:34:43 2015 +0100 sna: Manually clear the GPU bo needs_flush flag after doing an explicit flush The kernel often gets confused and fails to flush the bo itself, so lets just pretend it worked. Reported-by: Jiri Slaby <<a href="mailto:jirislaby@gmail.com">jirislaby@gmail.com</a>> References: <a class="bz_bug_link bz_status_REOPENED " title="REOPENED - [sna suse] ddx assertion hits" href="show_bug.cgi?id=70461#c127">https://bugs.freedesktop.org/show_bug.cgi?id=70461#c127</a> Signed-off-by: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>></pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>