On Tue, Aug 25, 2015 at 05:06:43PM -0400, Paul Gortmaker wrote:
> [[PATCH] nfsd: don't WARN/backtrace for invalid container deployment.] On
> 25/08/2015 (Tue 16:59) Paul Gortmaker wrote:
>
> > These messages, combined with the backtrace they trigger, makes it seem
> > like a serious problem, though a quick search shows distros marking
> > it as a "won't fix" non-issue when the problem is reported by users.
>
> Ah crap, didn't notice I was on a slightly older kernel when generating
> this ; it still applies to master with minor fuzz. I can resend if need
> be, and if folks are OK with the general approach.
Well, this really is something we need to fix, but given that it's going
to take a while, OK, maybe toning this down is best.
--b.
>
> Paul.
> --
>
> >
> > The backtrace is overkill, and only really manages to show that if
> > you follow the code path, you can't really avoid it with bootargs
> > or configuration settings in the container.
> >
> > Given that, lets tone it down a bit and get rid of the WARN severity,
> > and the associated backtrace, so people aren't needlessly alarmed.
> >
> > Also, lets drop the split printk line, since they are grep unfriendly.
> >
> > Cc: "J. Bruce Fields" <bfie...@fieldses.org>
> > Cc: linux-...@vger.kernel.org
> > Signed-off-by: Paul Gortmaker <paul.gortma...@windriver.com>
> >
> > diff --git a/fs/nfsd/nfs4recover.c b/fs/nfsd/nfs4recover.c
> > index 9c271f42604a..fe8a3da5eb63 100644
> > --- a/fs/nfsd/nfs4recover.c
> > +++ b/fs/nfsd/nfs4recover.c
> > @@ -526,8 +526,7 @@ nfsd4_legacy_tracking_init(struct net *net)
> >
> > /* XXX: The legacy code won't work in a container */
> > if (net != &init_net) {
> > - WARN(1, KERN_ERR "NFSD: attempt to initialize legacy client "
> > - "tracking in a container!\n");
> > + pr_warn("NFSD: attempt to initialize legacy client tracking in
> > a container ignored.\n");
> > return -EINVAL;
> > }
> >
> > @@ -1191,8 +1190,7 @@ nfsd4_umh_cltrack_init(struct net
> > __attribute__((unused)) *net)
> > {
> > /* XXX: The usermode helper s not working in container yet. */
> > if (net != &init_net) {
> > - WARN(1, KERN_ERR "NFSD: attempt to initialize umh client "
> > - "tracking in a container!\n");
> > + pr_warn("NFSD: attempt to initialize umh client tracking in a
> > container ignored.\n");
> > return -EINVAL;
> > }
> > return nfsd4_umh_cltrack_upcall("init", NULL, NULL);
> > --
> > 2.1.0
> >
--
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