From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <48FD74AB.9010307@cn.fujitsu.com> Date: Tue, 21 Oct 2008 14:20:27 +0800 From: Li Zefan MIME-Version: 1.0 Subject: [memcg BUG] unable to handle kernel NULL pointer derefence at 00000000 References: <20081017194804.fce28258.nishimura@mxp.nes.nec.co.jp> <20081017195601.0b9abda1.nishimura@mxp.nes.nec.co.jp> <6599ad830810201253u3bca41d4rabe48eb1ec1d529f@mail.gmail.com> <20081021101430.d2629a81.kamezawa.hiroyu@jp.fujitsu.com> <48FD6901.6050301@linux.vnet.ibm.com> <20081021143955.eeb86d49.kamezawa.hiroyu@jp.fujitsu.com> In-Reply-To: <20081021143955.eeb86d49.kamezawa.hiroyu@jp.fujitsu.com> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: KAMEZAWA Hiroyuki Cc: balbir@linux.vnet.ibm.com, Paul Menage , Daisuke Nishimura , linux-mm@kvack.org List-ID: > BTW, "allocate all page_cgroup at boot" patch goes to Linus' git. Wow. > But seems this patch causes kernel panic at system boot ... (or maybe one of other memcg patches?) I wrote down the panic manually: BUG: unable to handle kernel NULL pointer dereference at 00000000 IP: page_cgroup_zoneinfo + 0xa Call Trace: ? mem_cgroup_charge_common + 0x17d ? mem_cgroup_charge ? add_to_page_cache_locked ? add_to_page_cache_lru ? find_or_create_page ? __getblk ? ext3_get_inode_loc ? ext3_iget ? ext3_lookup Tell me if you need extra information. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org