Re: [PATCH v2] notifier: Fix soft lockup for notifier_call_chain().

[Eric Dumazet]

On Fri, 2016-07-01 at 11:06 +0800, Ding Tianhong wrote:

> I debug this problem, and found that the __fib6_clean_all() would not
> hold the cpu more than 1 second event though there
> is a lot of ipv6 address to deal with, but the notifier_chian would
> call the ipv6 notifier several times and hold the cpu
> for a long time, so add cond_resched() in the addrconf_ifdown could
> solve the problem correctly, I think your first solution
> is the good way to fix this bug.

I am traveling these days, so please send an official patch once you've
tested it, thanks !