From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Howells Subject: Re: Kernel errors with overlay filesystem v22 Date: Thu, 29 May 2014 12:16:42 +0100 Message-ID: <28186.1401362202@warthog.procyon.org.uk> References: <27993.1401360881@warthog.procyon.org.uk> <1400838223-30844-1-git-send-email-miklos@szeredi.hu> Cc: dhowells@redhat.com, viro@ZenIV.linux.org.uk, torvalds@linux-foundation.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, hch@infradead.org, akpm@linux-foundation.org, apw@canonical.com, nbd@openwrt.org, neilb@suse.de, jordipujolp@gmail.com, ezk@fsl.cs.sunysb.edu, sedat.dilek@gmail.com, hooanon05@yahoo.co.jp, mszeredi@suse.cz To: Miklos Szeredi Return-path: In-Reply-To: <27993.1401360881@warthog.procyon.org.uk> Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-fsdevel.vger.kernel.org David Howells wrote: > ================================================ > [ BUG: lock held when returning to user space! ] > 3.15.0-rc6-fsdevel+ #363 Tainted: G W > ------------------------------------------------ > mount/4183 is leaving the kernel with locks still held! > 1 lock held by mount/4183: > #0: (sb_writers#8){.+.+.+}, at: [] mnt_want_write+0x1c/0x40 This comes from the: + mount -t overlayfs overlayfs /mnt -olowerdir=/lower,upperdir=/upper/upper,workdir=/upper/work command. David