[net-next regression] kselftest failure in fib_nl_newrule()

[Anders Roxell]

Hi,

fib-onlink-tests.sh (from kselftest) found a regression between
next-20180424 [1] (worked with tag next-20180423 [2])

here is tree commits that look suspicious specially this patch (sha:
f9d4b0c1e969)
rewrites fib_nl_newrule().his patch (sha: f9d4b0c1e969) rewrites
fib_nl_newrule().

b16fb418b1bf ("net: fib_rules: add extack support")
f9d4b0c1e969 ("fib_rules: move common handling of newrule delrule msgs
into fib_nl2rule")
8a14e46f1402 ("net/ipv6: Fix missing rcu dereferences on from")

Cheers,
Anders
[1] https://lkft.validation.linaro.org/scheduler/job/195181#L3447
[2] https://lkft.validation.linaro.org/scheduler/job/193410#L3438