On Tue, 9 Oct 2018 08:35:00 +0200 Heiko Carstens <heiko.carstens@xxxxxxxxxx> wrote: > with linux-next for 20181008 I can reliably crash my system with lot's of > debugging options enabled on s390. List debugging triggers the list > corruption below, which I could bisect down to this commit: > > fde06e07750477f049f12d7d471ffa505338a3e7 is the first bad commit > commit fde06e07750477f049f12d7d471ffa505338a3e7 > Author: Pingfan Liu <kernelfans@xxxxxxxxx> > Date: Thu Oct 4 07:43:01 2018 +1000 > > mm/slub: remove useless condition in deactivate_slab > > The var l should be used to reflect the original list, on which the page > should be. But c->page is not on any list. Furthermore, the current code > does not update the value of l. Hence remove the related logic > > Link: http://lkml.kernel.org/r/1537941430-16217-1-git-send-email-kernelfans@xxxxxxxxx > Signed-off-by: Pingfan Liu <kernelfans@xxxxxxxxx> > Acked-by: Christoph Lameter <cl@xxxxxxxxx> > Cc: Pekka Enberg <penberg@xxxxxxxxxx> > Cc: David Rientjes <rientjes@xxxxxxxxxx> > Cc: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx> > Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> > Signed-off-by: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> > > list_add double add: new=000003d1029ecc08, prev=000000008ff846d0,next=000003d1029ecc08. > ------------[ cut here ]------------ > kernel BUG at lib/list_debug.c:31! Thanks much. I'll drop mm-slub-remove-useless-condition-in-deactivate_slab.patch.
