From 785fd8b8a597519127c6d9e16e81f48af2ad391e Mon Sep 17 00:00:00 2001 From: Jamal Hadi Salim <hadi@cyberus.ca> Date: Sun, 19 Nov 2006 14:55:30 -0800 Subject: [PATCH] [XFRM]: nlmsg length not computed correctly in the presence of subpolicies I actually dont have a test case for these; i just found them by inspection. Refer to patch "[XFRM]: Sub-policies broke policy events" for more info Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca> Acked-by: Masahide NAKAMURA <nakam@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net> --- net/xfrm/xfrm_user.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c index 2dae1c1ea3625..c4cde57d9216c 100644 --- a/net/xfrm/xfrm_user.c +++ b/net/xfrm/xfrm_user.c @@ -1927,6 +1927,9 @@ static int xfrm_send_acquire(struct xfrm_state *x, struct xfrm_tmpl *xt, len = RTA_SPACE(sizeof(struct xfrm_user_tmpl) * xp->xfrm_nr); len += NLMSG_SPACE(sizeof(struct xfrm_user_acquire)); len += RTA_SPACE(xfrm_user_sec_ctx_size(xp)); +#ifdef CONFIG_XFRM_SUB_POLICY + len += RTA_SPACE(sizeof(struct xfrm_userpolicy_type)); +#endif skb = alloc_skb(len, GFP_ATOMIC); if (skb == NULL) return -ENOMEM; @@ -2034,6 +2037,9 @@ static int xfrm_exp_policy_notify(struct xfrm_policy *xp, int dir, struct km_eve len = RTA_SPACE(sizeof(struct xfrm_user_tmpl) * xp->xfrm_nr); len += NLMSG_SPACE(sizeof(struct xfrm_user_polexpire)); len += RTA_SPACE(xfrm_user_sec_ctx_size(xp)); +#ifdef CONFIG_XFRM_SUB_POLICY + len += RTA_SPACE(sizeof(struct xfrm_userpolicy_type)); +#endif skb = alloc_skb(len, GFP_ATOMIC); if (skb == NULL) return -ENOMEM; @@ -2109,10 +2115,12 @@ static int xfrm_notify_policy_flush(struct km_event *c) struct nlmsghdr *nlh; struct sk_buff *skb; unsigned char *b; + int len = 0; #ifdef CONFIG_XFRM_SUB_POLICY struct xfrm_userpolicy_type upt; + len += RTA_SPACE(sizeof(struct xfrm_userpolicy_type)); #endif - int len = NLMSG_LENGTH(0); + len += NLMSG_LENGTH(0); skb = alloc_skb(len, GFP_ATOMIC); if (skb == NULL) -- 2.30.2