On 07/17/2018 02:37 PM, Andrew Morton wrote: > On Fri, 15 Jun 2018 13:33:39 -0700 Dave Jiang <dave.jiang@xxxxxxxxx> wrote: > >> When pmem namespaces created are smaller than section size, this can cause >> issue during removal and gpf was observed: >> >> ... >> >> Add code to check whether we have mapping already in the same section and >> prevent additional mapping from created if that is the case. >> > > Which kernel version(s) do you believe need this fix, and why? > It really should go into 4.18-rc and backported to stable since without it a GPF can be triggered when pmem namespaces smaller than section size are constructed.
