On Thu, Aug 16, 2018 at 3:14 PM Robin P. Blanchard <robin.blanchard@xxxxxxxxx> wrote: > > On Thu, Aug 16, 2018 at 2:49 PM Tom Talpey <ttalpey@xxxxxxxxxxxxx> wrote: > > > > > -----Original Message----- > > > From: linux-cifs-owner@xxxxxxxxxxxxxxx <linux-cifs-owner@xxxxxxxxxxxxxxx> On > > > Behalf Of Robin P. Blanchard > > > Sent: Thursday, August 16, 2018 3:34 PM > > > To: Steve French <smfrench@xxxxxxxxx> > > > Cc: linux-cifs@xxxxxxxxxxxxxxx > > > Subject: Re: regression in CIFS(?) between 4.17.14 and 4.18.0 > > > > > > Ok. "Good" news. > > > > > > The issue is specific to vers=2.0. > > > > Your Windows Server 2008R2 target supports SMB2.1, is there some reason you > > are not using the 2.1 dialect? It is *much* preferred to the baselevel 2.0, though of > > course any 3.x is better still. > > > > Tom. > > Sure. This, however, doesn't explain the regression. > > FWIW - just rested: vers=2.1 also triggers spontaneous reboot So barring other differences in the server (unexpected return code that Windows 2008R2 returns that Samba or Windows 2012 or Windows 2016 or Mac servers or NetApp wouldn't return) ... best theory is that only the older two dialects SMB2.0 and SMB2.1 broke for your scenario, but only if mounted via pam_mount not if mounted explicitly from bash? Is that correct? If anyone else is able to repro this let us know ASAP, and of course any data on location of oops would be huge help ... perhaps build kernel with different kconfig options for debugging -- Thanks, Steve