From mboxrd@z Thu Jan 1 00:00:00 1970 From: Richard Guy Briggs Subject: Re: [PATCH] audit_tree: keep inode pinned Date: Wed, 5 Nov 2014 11:58:33 -0500 Message-ID: <20141105165833.GE5902@madcap2.tricolour.ca> References: <20141104102712.GA7088@tucsk.piliscsaba.szeredi.hu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20141104102712.GA7088@tucsk.piliscsaba.szeredi.hu> Sender: linux-kernel-owner@vger.kernel.org To: Miklos Szeredi Cc: Eric Paris , Al Viro , Linux Kernel Mailing List , linux-audit@redhat.com List-Id: linux-audit@redhat.com On 14/11/04, Miklos Szeredi wrote: > From: Miklos Szeredi Hi Miklos, > Audit rules disappear when an inode they watch is evicted from the cache. > This is likely not what we want. > > The guilty commit is "fsnotify: allow marks to not pin inodes in core", > which didn't take into account that audit_tree adds watches with a zero > mask. > > Adding any mask should fix this. Nice find! Do you have a quick reproducer to detect this? > Fixes: 90b1e7a57880 ("fsnotify: allow marks to not pin inodes in core") > Signed-off-by: Miklos Szeredi > Cc: stable@vger.kernel.org # 2.6.36+ > --- > kernel/audit_tree.c | 1 + > 1 file changed, 1 insertion(+) > > --- a/kernel/audit_tree.c > +++ b/kernel/audit_tree.c > @@ -154,6 +154,7 @@ static struct audit_chunk *alloc_chunk(i > chunk->owners[i].index = i; > } > fsnotify_init_mark(&chunk->mark, audit_tree_destroy_watch); > + chunk->mark.mask = FS_IN_IGNORED; > return chunk; > } > - RGB -- Richard Guy Briggs Senior Software Engineer, Kernel Security, AMER ENG Base Operating Systems, Red Hat Remote, Ottawa, Canada Voice: +1.647.777.2635, Internal: (81) 32635, Alt: +1.613.693.0684x3545