Re: [mmots-2016-06-09-16-49] kernel BUG at mm/slub.c:1616
From: Michal Hocko <mhocko@kernel.org>
Date: 2016-06-10 06:34:24
Also in:
linux-next, lkml
Subsystem:
filesystems (vfs and infrastructure), the rest · Maintainers:
Alexander Viro, Christian Brauner, Linus Torvalds
On Fri 10-06-16 15:11:39, Sergey Senozhatsky wrote:
Hello, [ 429.191962] gfp: 2 [ 429.192634] ------------[ cut here ]------------ [ 429.193281] kernel BUG at mm/slub.c:1616!
[...]
[ 429.217369] [<ffffffff811ca221>] bio_alloc_bioset+0xbd/0x1b1 [ 429.218013] [<ffffffff81148078>] mpage_alloc+0x28/0x7b [ 429.218650] [<ffffffff8114856a>] do_mpage_readpage+0x43d/0x545 [ 429.219282] [<ffffffff81148767>] mpage_readpages+0xf5/0x152
OK, so this is flags & GFP_SLAB_BUG_MASK BUG_ON because gfp is ___GFP_HIGHMEM. It is my [1] patch which has introduced it. I think we need the following. Andrew could you fold it into mm-memcg-use-consistent-gfp-flags-during-readahead.patch or maybe keep it as a separate patch? [1] http://lkml.kernel.org/r/1465301556-26431-1-git-send-email-mhocko@kernel.org Thanks for the report Sergey! ---