From: Christophe JAILLET
Date: Fri, 28 Dec 2018 23:28:21 +0100
> 'ipv6_find_idev()' returns NULL on error, not an error pointer.
> Update the test accordingly and return -ENOBUFS, as already done in
> 'addrconf_add_dev()', if NULL is returned.
>
> Fixes: ("ipv6: allow userspace to add IFA_F_OPTI
'ipv6_find_idev()' returns NULL on error, not an error pointer.
Update the test accordingly and return -ENOBUFS, as already done in
'addrconf_add_dev()', if NULL is returned.
Fixes: ("ipv6: allow userspace to add IFA_F_OPTIMISTIC addresses")
Signed-off-by: Christophe JAILLET
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net/ipv6/addrcon