On Thu, May 31, 2012 at 07:43:25PM -0700, Linus Torvalds wrote: > On Thu, May 31, 2012 at 7:31 PM, Dave Jones <davej@xxxxxxxxxx> wrote: > > > > So I bisected it anyway, and it led to ... > > Ok, that doesn't sound entirely unlikely, but considering that you're > nervous about the bisection, please just try to revert it and see if > that fixes your testcase. > > You'll obviously need to revert the commit that removes > vmtruncate_range() too, since reverting 3f31d07571ee will re-introduce > the use of it (it's the next one: > 17cf28afea2a1112f240a3a2da8af883be024811), but it looks like those two > commits revert cleanly and the end result seems to compile ok. crap, so much for that theory. I ran latest with those two reverted overnight, and woke up to a dead box. Over serial console, I see a bunch of those same compaction oopses (Via sys_mmap_pgoff), and then kernel BUG at include/linux/mm.h:448! was the last thing it said before it choked. I'll redo the bisect. It's possible that one of the 'good' paths just didn't run for long enough. Dave -- 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=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>