Message ID | 1473690096-18509-1-git-send-email-zlpnobody@163.com |
---|---|
State | Accepted |
Delegated to: | Pablo Neira |
Headers | show |
i On Mon, Sep 12, 2016 at 10:21:36PM +0800, Liping Zhang wrote: > From: Liping Zhang <liping.zhang@spreadtrum.com> > > After we generate a new number, we still use the priv->counter and > store it to the dreg. This is not correct, another cpu may already > change it to a new number. So we must use the generated number, not > the priv->counter itself. Applied, thanks Liping. -- To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/net/netfilter/nft_numgen.c b/net/netfilter/nft_numgen.c index f51a3ed..f173ebe 100644 --- a/net/netfilter/nft_numgen.c +++ b/net/netfilter/nft_numgen.c @@ -37,7 +37,7 @@ static void nft_ng_inc_eval(const struct nft_expr *expr, nval = (oval + 1 < priv->modulus) ? oval + 1 : 0; } while (atomic_cmpxchg(&priv->counter, oval, nval) != oval); - memcpy(®s->data[priv->dreg], &priv->counter, sizeof(u32)); + regs->data[priv->dreg] = nval; } static const struct nla_policy nft_ng_policy[NFTA_NG_MAX + 1] = {