On Wed, 26 Oct 2016 16:15:24 +0000, Yotam Gigi wrote: > >-----Original Message----- > >From: Anna Schumaker [mailto:anna.schuma...@netapp.com] > >Sent: Wednesday, October 26, 2016 5:40 PM > >To: Yotam Gigi <yot...@mellanox.com>; Jakub Kicinski <kubak...@wp.pl>; Andy > >Adamson <and...@netapp.com>; Anna Schumaker > ><anna.schuma...@netapp.com>; linux-...@vger.kernel.org > >Cc: netdev@vger.kernel.org; Trond Myklebust <trond.mykleb...@netapp.com>; > >Yotam Gigi <yotam...@gmail.com>; mlxsw <ml...@mellanox.com> > >Subject: Re: nfs NULL-dereferencing in net-next > > > >On 10/25/2016 01:19 PM, Yotam Gigi wrote: > >> > >>> -----Original Message----- > >>> From: netdev-ow...@vger.kernel.org [mailto:netdev-ow...@vger.kernel.org] > >On > >>> Behalf Of Jakub Kicinski > >>> Sent: Monday, October 17, 2016 10:20 PM > >>> To: Andy Adamson <and...@netapp.com>; Anna Schumaker > >>> <anna.schuma...@netapp.com>; linux-...@vger.kernel.org > >>> Cc: netdev@vger.kernel.org; Trond Myklebust > ><trond.mykleb...@netapp.com> > >>> Subject: nfs NULL-dereferencing in net-next > >>> > >>> Hi! > >>> > >>> I'm hitting this reliably on net-next, HEAD at 3f3177bb680f > >>> ("fsl/fman: fix error return code in mac_probe()"). > >> > >> > >> I see the same thing. It happens constantly on some of my machines, making > >> > >them > >> completely unusable. > >> > >> I bisected it and got to the commit: > >> > >> commit 04ea1b3e6d8ed4978bb608c1748530af3de8c274 > >> Author: Andy Adamson <and...@netapp.com> > >> Date: Fri Sep 9 09:22:27 2016 -0400 > >> > >> NFS add xprt switch addrs test to match client > >> > >> Signed-off-by: Andy Adamson <and...@netapp.com> > >> Signed-off-by: Anna Schumaker <anna.schuma...@netapp.com> > > > >Thanks for reporting on this everyone! Does this patch help? > > Actually, I still see the same bug with the same trace.
I rebuild the latest net-next and I'm not seeing the trace any more... I'm only seeing this (with or without your patch): [ 23.465877] NFS: set_pnfs_layoutdriver: cl_exchange_flags 0x0 [ 23.473784] NFS: set_pnfs_layoutdriver: cl_exchange_flags 0x0 [ 23.588890] NFS: set_pnfs_layoutdriver: cl_exchange_flags 0x0 [ 23.596746] NFS: set_pnfs_layoutdriver: cl_exchange_flags 0x0 [ 23.781574] NFS: set_pnfs_layoutdriver: cl_exchange_flags 0x0 [ 23.789599] NFS: set_pnfs_layoutdriver: cl_exchange_flags 0x0 HTH
