From mboxrd@z Thu Jan 1 00:00:00 1970 From: syzbot Subject: KASAN: null-ptr-deref Read in reclaim_high Date: Mon, 11 Mar 2019 06:08:01 -0700 Message-ID: <0000000000001fd5780583d1433f@google.com> Mime-Version: 1.0 Return-path: Sender: linux-kernel-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="us-ascii"; format="flowed"; delsp="yes" Content-Transfer-Encoding: 7bit To: akpm@linux-foundation.org, cgroups@vger.kernel.org, hannes@cmpxchg.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, mhocko@kernel.org, mhocko@suse.com, sfr@canb.auug.org.au, shakeelb@google.com, syzkaller-bugs@googlegroups.com, vdavydov.dev@gmail.com syzbot has bisected this bug to: commit 29a4b8e275d1f10c51c7891362877ef6cffae9e7 Author: Shakeel Butt Date: Wed Jan 9 22:02:21 2019 +0000 memcg: schedule high reclaim for remote memcgs on high_work bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=155bf5db200000 start commit: 29a4b8e2 memcg: schedule high reclaim for remote memcgs on.. git tree: linux-next final crash: https://syzkaller.appspot.com/x/report.txt?x=175bf5db200000 console output: https://syzkaller.appspot.com/x/log.txt?x=135bf5db200000 kernel config: https://syzkaller.appspot.com/x/.config?x=611f89e5b6868db dashboard link: https://syzkaller.appspot.com/bug?extid=fa11f9da42b46cea3b4a userspace arch: amd64 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14259017400000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=141630a0c00000 Reported-by: syzbot+fa11f9da42b46cea3b4a@syzkaller.appspotmail.com Fixes: 29a4b8e2 ("memcg: schedule high reclaim for remote memcgs on high_work")