On Fri, Jul 28, 2017 at 08:36:02PM +0300, Ido Schimmel wrote: > On Fri, Jul 28, 2017 at 10:28:16AM -0700, Cong Wang wrote: > > On Fri, Jul 28, 2017 at 9:43 AM, Ido Schimmel <ido...@idosch.org> wrote: > > > On Fri, Jul 28, 2017 at 06:00:47PM +0200, Michał Mirosław wrote: > > >> Dear NetDevs, > > >> > > >> Before I go to bisecting, have you seen a following NULL dereference, > > >> yet? Where should I start looking? It is triggered by deleting netns > > >> (cut-down script attached - triggers every time). This was working > > >> correctly under v4.11.x. > > > Thanks for the report. I just reproduced this on my system. I believe > > > the problem is a missing NULL check for 'in_dev' in > > > call_fib_nh_notifiers(). I'll test a fix. > > But your commit 982acb97560c8118c2109504a22b0d78a580547d > > is merged in v4.11-rc1. How could 4.11.x work correctly? > It doesn't. I just reproduced this on v4.11.
Thanks for looking into this. I was sure that I ran v4.11.7 last time, but it turns out I worked on this earlier than that. I'll be glad to test patches for this issue when you have it. Best Regards, Michał Mirosław
