From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Tue, 5 Feb 2008 10:40:28 -0800 From: Andrew Morton Subject: Re: [2.6.24 REGRESSION] BUG: Soft lockup - with VFS Message-Id: <20080205104028.190192b1.akpm@linux-foundation.org> In-Reply-To: <1202219216.27371.24.camel@moss-spartans.epoch.ncsc.mil> References: <6101e8c40801280031v1a860e90gfb3992ae5db37047@mail.gmail.com> <20080204213911.1bcbaf66.akpm@linux-foundation.org> <1202219216.27371.24.camel@moss-spartans.epoch.ncsc.mil> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8BIT Sender: owner-linux-mm@kvack.org Return-Path: To: Stephen Smalley Cc: "\"Oliver =?ISO-8859-1?B?UGludGVyIiAoUGludOlyIE9saXbpciki?= , Linux Kernel , linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, James Morris "@linux-foundation.org List-ID: On Tue, 05 Feb 2008 08:46:56 -0500 Stephen Smalley wrote: > > On Mon, 2008-02-04 at 21:39 -0800, Andrew Morton wrote: > > On Mon, 28 Jan 2008 09:31:43 +0100 "Oliver Pinter (Pinter Oliver)" wrote: > > > > > hi all! > > > > > > in the 2.6.24 become i some soft lockups with usb-phone, when i pluged > > > in the mobile, then the vfs-layer crashed. am afternoon can i the > > > .config send, and i bisected the kernel, when i have time. > > > > > > pictures from crash: > > > http://students.zipernowsky.hu/~oliverp/kernel/regression_2624/ > > > > It looks like selinux's file_has_perm() is doing spin_lock() on an > > uninitialised (or already locked) spinlock. > > The trace looks bogus to me - I don't see how file_has_perm() could have > been called there, and file_has_perm() doesn't directly take any spin > locks. > Oliver, could you please set CONFIG_FRAME_POINTER=y (which might get a better trace), and perhaps try Linus's latest tree from ftp://ftp.kernel.org/pub/linux/kernel/v2.6/snapshots/ (which is a bit more careful about telling us about possibly-bogus backtrace entries)? Thanks. -- 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