Hit divide-by-0 in vmpressure_work_fn(): checking vmpr->scanned before taking the lock is not enough, we must check scanned afterwards too.
Signed-off-by: Hugh Dickins <hu...@google.com> Cc: sta...@vger.kernel.org --- mm/vmpressure.c | 3 +++ 1 file changed, 3 insertions(+) --- 3.11/mm/vmpressure.c 2013-09-02 13:46:10.000000000 -0700 +++ linux/mm/vmpressure.c 2013-09-06 22:43:03.596003080 -0700 @@ -187,6 +187,9 @@ static void vmpressure_work_fn(struct wo vmpr->reclaimed = 0; spin_unlock(&vmpr->sr_lock); + if (!scanned) + return; + do { if (vmpressure_event(vmpr, scanned, reclaimed)) break; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/