From: "Zdenek Kabelac" Subject: Re: 2.6.25-git2: BUG: unable to handle kernel paging request at ffffffffffffffff Date: Tue, 22 Apr 2008 01:11:27 +0200 Message-ID: References: <200804211812.16994.rjw@sisk.pl> <20080421.133940.52972455.davem@davemloft.net> <480D04A2.5000006@gmail.com> <480D0E14.1040306@gmail.com> <480D147C.90602@gmail.com> <20080421225452.GF9153@linux.vnet.ibm.com> <480D1CF1.7010300@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: paulmck@linux.vnet.ibm.com, "David Miller" , torvalds@linux-foundation.org, rjw@sisk.pl, linux-kernel@vger.kernel.org, mingo@elte.hu, akpm@linux-foundation.org, linux-ext4@vger.kernel.org, herbert@gondor.apana.org.au To: "Jiri Slaby" Return-path: Received: from wx-out-0506.google.com ([66.249.82.226]:23916 "EHLO wx-out-0506.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753269AbYDUXL3 convert rfc822-to-8bit (ORCPT ); Mon, 21 Apr 2008 19:11:29 -0400 Received: by wx-out-0506.google.com with SMTP id h31so1533365wxd.4 for ; Mon, 21 Apr 2008 16:11:28 -0700 (PDT) In-Reply-To: <480D1CF1.7010300@gmail.com> Content-Disposition: inline Sender: linux-ext4-owner@vger.kernel.org List-ID: 2008/4/22, Jiri Slaby : > On 04/22/2008 12:54 AM, Paul E. McKenney wrote: > > > On Tue, Apr 22, 2008 at 12:26:04AM +0200, Jiri Slaby wrote: > > > > > > > > > Having slub_debug enabled, tomorrow will be results, I guess... > > > > > > > Sorry, one more entry: > > > > > > 00000000000000f0 dentry.d_op (Zdenek, offset ? around 136) > > > > > > > Zdenek's is at offset 184. > > > > > > > 00f0000000000000 dentry.d_hash.next (me, offset 24) > > > ffff81f02003f16c dentry.d_name.name (me, offset 56) > > > memory ORed by 000000f000000000 > > > fffff0002004c1b0 file.f_mapping (me, offset 176) > > > memory hole, it was something like > > > (ffff81002004c1b0 & ~00000f0000000000) | 0000f00000000000? > > > ffffffffffffffff dentry.d_hash.next (Rafael, offset ? around 24) > > > -1, ~0ULL > > > > > > > Are these running with CONFIG_PREEMPT_RCU? Grasping at straws, but > > there are a couple of patches that need to move from -rt to mainlin= e, > > but mostly related to SELinux. So if both PREEMPT_RCU and SELinux > > were in use, we might be missing "rcu-various-fixups.patch" from: > > > > $ grep RCU .config > CONFIG_CLASSIC_RCU=3Dy > # CONFIG_RCU_TORTURE_TEST is not set > $ grep SECU .config > # CONFIG_EXT4DEV_FS_SECURITY is not set > # CONFIG_SECURITY is not set > # CONFIG_SECURITY_FILE_CAPABILITIES is not set > > I guess not. > > BTW the corruption I mentioned earlier was char '=F0' and it's ('p' = | 0xf0) > in latin2. I think it was set_=F0ending_irq IIRC. Whatever, it won't = help us. > I've kernel compiled with preemptible RCU & Security - but usually using selinux=3Doff as a kernel parameter Zdenek -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html