From: Aaro Koskinen <aaro.koskinen@xxxxxx> Date: Fri, 25 Apr 2014 23:09:08 +0300 > On Wed, Apr 16, 2014 at 02:58:22PM -0400, David Miller wrote: >> One thing you two can do to help me further confirm this is to run >> with THP disabled for a while and see if you still get the log >> messages. >> >> Simply, as root: >> >> bash# echo "never" >/sys/kernel/mm/transparent_hugepage/enabled >> >> And then do your gcc bootstraps or whatever else seems to usually >> run when you trigger this problem. > > I'm running my Ultras with "# CONFIG_TRANSPARENT_HUGEPAGE is not set" > and I still see the issue. Thanks, that's an important datapoint. > I tried reproducing the bug with function tracer running. It works > but reproducing the bug takes several days... This time it was "expect" > segfault during GCC testsuite that triggered the bug. > > For the test I added tracing_off() after the "Bad rss-counter > state" printout. Now I see it should be done maybe earlier as warning/bug > printouts are polluting the trace. > > Anyway, the results are here: > > http://www.iki.fi/aaro/junk/linux-3.14-sparc-mm-bug-trace.txt > http://www.iki.fi/aaro/junk/linux-3.14-sparc-mm-bug-trace-dmesg.txt Thanks a lot for doing this, I'll take a look. -- To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
