On Sat, 23 Nov 2019 11:56:49 +0800, Xin Long wrote:
> This patch is to fix a data-race reported by syzbot:
>
> BUG: KCSAN: data-race in sctp_assoc_migrate / sctp_hash_obj
> It was caused by rhashtable access asoc->base.sk when sctp_assoc_migrate
> is changing its value. However, what rhashtable wants is netns from asoc
> base.sk, and for an asoc, its netns won't change once set. So we can
> simply fix it by caching netns since created.
>
> Fixes: d6c0256a60e6 ("sctp: add the rhashtable apis for sctp global transport hashtable")
> Reported-by: syzbot+e3b35fe7918ff0ee474e@xxxxxxxxxxxxxxxxxxxxxxxxx
> Signed-off-by: Xin Long <lucien.xin@xxxxxxxxx>
Applied, thank you!
