<div dir="auto"><div><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Aug 2, 2019, 3:59 PM Matthew Wilcox <<a href="mailto:willy@infradead.org">willy@infradead.org</a>> wrote:</div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
That doesn't help because we call reset_page_owner() in the free page path.<br>
<br>
We could turn on tracing because we call trace_mm_page_free() in this<br>
path. That requires the reporter to be able to reproduce the problem,<br>
and it's not clear to me whether this is a "happened once" or "every<br>
time I do this, it happens" problem.<br></blockquote></div></div><div dir="auto"><br></div><div dir="auto">It happened on 3 of the boots with that kernel. 4th time box either spontaneously rebooted when X started, or watchdog restarted box shortly after starting X server.</div><div dir="auto"><br></div><div dir="auto">So I believe I should be able to reproduce it with additional patches or extra flags enabled.</div><div dir="auto"><br></div><div dir="auto">Petr</div><div dir="auto"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"></blockquote></div></div></div>