Re: [PATCH v2 net] ipv6: flowlabel: fl6_sock_lookup() must use atomic_inc_not_zero

[David Miller]

From: Eric Dumazet <eduma...@google.com>
Date: Thu,  6 Jun 2019 14:32:34 -0700

> Before taking a refcount, make sure the object is not already
> scheduled for deletion.
> 
> Same fix is needed in ipv6_flowlabel_opt()
> 
> Fixes: 18367681a10b ("ipv6 flowlabel: Convert np->ipv6_fl_list to RCU.")
> Signed-off-by: Eric Dumazet <eduma...@google.com>

Applied and queued up for -stable.