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?