<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - WARN_ON(i915_gem_object_has_pinned_pages(obj))" href="https://bugs.freedesktop.org/show_bug.cgi?id=104341#c3">Comment # 3</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - WARN_ON(i915_gem_object_has_pinned_pages(obj))" href="https://bugs.freedesktop.org/show_bug.cgi?id=104341">bug 104341</a> from <a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> Chris Wilson</a> <pre>(In reply to Adric Blake from <a href="show_bug.cgi?id=104341#c2">comment #2</a>) > Created <a href="attachment.cgi?id=136307" name="attach_136307" title="bo->refcnt error details and related logs">attachment 136307</a> <a href="attachment.cgi?id=136307&action=edit" title="bo->refcnt error details and related logs">[details]</a> > bo->refcnt error details and related logs > > Not a capture of that warning (sorry!), but Xorg crashed with what might be > a relevant assert, so attaching that and my boot log so far in case it's > related. > > [ 4941.443] (EE) assert_bo_retired:325 assertion 'bo->refcnt' failed No, that's just the buffer cache tripping over itself. The refcnt check was there to optimistically prevent accidental use-after-free, but it also is being triggered on one path having just pulled the buffer out of the free cache. commit 708255cbca83dbafe9154c39bd4553b0b81f09cf (HEAD, upstream/master) Author: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>> Date: Wed Dec 20 08:46:43 2017 +0000 sna: Drop redundant sync of an inactive snoop cache Having requested an inactive snooped buffer, we know that it is already flushed and do not need to flush it again. With debugging enabled, we hit an assert while flushing that the buffer has a refcout, which at this present time of being plucked from the snoop cache it does not. Reported-by: Adric Blake <<a href="mailto:promarbler14@gmail.com">promarbler14@gmail.com</a>> References: <a class="bz_bug_link bz_status_NEW " title="NEW - WARN_ON(i915_gem_object_has_pinned_pages(obj))" href="show_bug.cgi?id=104341#c2">https://bugs.freedesktop.org/show_bug.cgi?id=104341#c2</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> <li>You are on the CC list for the bug.</li> <li>You are the assignee for the bug.</li> </ul> </body> </html>