On Wed, Feb 15, 2012 at 6:14 PM, Hugh Dickins <hughd@xxxxxxxxxx> wrote: > My suspicion was that it would be related to Transparent HugePages: > they do complicate the pagetable story. And I think I have found a > potential culprit. I don't know if nr_ptes is the only loser from > these two split_huge_pages calls, but assuming it is... Do you have an idea when this bug might have been introduced? Presumably it's been there since THP came in? The reason I ask is that I have one of these exit_mm BUG_ONs in my pile of one-off unreproducible crashes, but in my case it happened with 2.6.39 (with THP enabled). So I'm wondering if I can cross it off my list and blame this bug, or if it remains one of those inexplicable mysteries... Thanks, Roland -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href