On Fri, 2019-01-11 at 09:31 -0800, Matthew Wilcox wrote: > On Fri, Jan 11, 2019 at 11:51:45AM -0500, Qian Cai wrote: > > Reported-by: Esme <esploit@xxxxxxxxxxxxx> > > Signed-off-by: Qian Cai <cai@xxxxxx> > > What change introduced this bug? We need a Fixes: line so the stable > people know how far to backport this fix. It looks like, Fixes: 6d58452dc06 (rbtree: adjust root color in rb_insert_color() only when necessary) where it no longer always paint the root as black. Also, copying this fix for the original author and reviewer. https://lore.kernel.org/lkml/20190111165145.23628-1-cai@xxxxxx/