[NETLINK]: Missing initializations in dumped data

Mostly missing initialization of padding fields of 1 or 2 bytes length,
two instances of uninitialized nlmsgerr->msg of 16 bytes length.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index 851eb92..1beb782 100644 (file)
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -1598,6 +1598,8 @@ static int neightbl_fill_info(struct neigh_table *tbl, struct sk_buff *skb,
 
        read_lock_bh(&tbl->lock);
        ndtmsg->ndtm_family = tbl->family;
+       ndtmsg->ndtm_pad1   = 0;
+       ndtmsg->ndtm_pad2   = 0;
 
        RTA_PUT_STRING(skb, NDTA_NAME, tbl->id);
        RTA_PUT_MSECS(skb, NDTA_GC_INTERVAL, tbl->gc_interval);
@@ -1683,6 +1685,8 @@ static int neightbl_fill_param_info(struct neigh_table *tbl,
 
        read_lock_bh(&tbl->lock);
        ndtmsg->ndtm_family = tbl->family;
+       ndtmsg->ndtm_pad1   = 0;
+       ndtmsg->ndtm_pad2   = 0;
        RTA_PUT_STRING(skb, NDTA_NAME, tbl->id);
 
        if (neightbl_fill_parms(skb, parms) < 0)
@@ -1872,6 +1876,8 @@ static int neigh_fill_info(struct sk_buff *skb, struct neighbour *n,
        struct ndmsg *ndm = NLMSG_DATA(nlh);
 
        ndm->ndm_family  = n->ops->family;
+       ndm->ndm_pad1    = 0;
+       ndm->ndm_pad2    = 0;
        ndm->ndm_flags   = n->flags;
        ndm->ndm_type    = n->type;
        ndm->ndm_ifindex = n->dev->ifindex;

diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 879237c..4b1bb30 100644 (file)
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -189,6 +189,7 @@ static int rtnetlink_fill_ifinfo(struct sk_buff *skb, struct net_device *dev,
        nlh = NLMSG_NEW(skb, pid, seq, type, sizeof(*r), flags);
        r = NLMSG_DATA(nlh);
        r->ifi_family = AF_UNSPEC;
+       r->__ifi_pad = 0;
        r->ifi_type = dev->type;
        r->ifi_index = dev->ifindex;
        r->ifi_flags = dev_get_flags(dev);

diff --git a/net/core/wireless.c b/net/core/wireless.c
index b2fe378..3ff5639 100644 (file)
--- a/net/core/wireless.c
+++ b/net/core/wireless.c
@@ -1102,6 +1102,7 @@ static inline int rtnetlink_fill_iwinfo(struct sk_buff *  skb,
        nlh = NLMSG_PUT(skb, 0, 0, type, sizeof(*r));
        r = NLMSG_DATA(nlh);
        r->ifi_family = AF_UNSPEC;
+       r->__ifi_pad = 0;
        r->ifi_type = dev->type;
        r->ifi_index = dev->ifindex;
        r->ifi_flags = dev->flags;

diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
index e4f809a..7833d92 100644 (file)
--- a/net/ipv4/ipmr.c
+++ b/net/ipv4/ipmr.c
@@ -297,6 +297,7 @@ static int vif_delete(int vifi)
 static void ipmr_destroy_unres(struct mfc_cache *c)
 {
        struct sk_buff *skb;
+       struct nlmsgerr *e;
 
        atomic_dec(&cache_resolve_queue_len);
 
@@ -306,7 +307,9 @@ static void ipmr_destroy_unres(struct mfc_cache *c)
                        nlh->nlmsg_type = NLMSG_ERROR;
                        nlh->nlmsg_len = NLMSG_LENGTH(sizeof(struct nlmsgerr));
                        skb_trim(skb, nlh->nlmsg_len);
-                       ((struct nlmsgerr*)NLMSG_DATA(nlh))->error = -ETIMEDOUT;
+                       e = NLMSG_DATA(nlh);
+                       e->error = -ETIMEDOUT;
+                       memset(&e->msg, 0, sizeof(e->msg));
                        netlink_unicast(rtnl, skb, NETLINK_CB(skb).dst_pid, MSG_DONTWAIT);
                } else
                        kfree_skb(skb);
@@ -499,6 +502,7 @@ static struct mfc_cache *ipmr_cache_alloc_unres(void)
 static void ipmr_cache_resolve(struct mfc_cache *uc, struct mfc_cache *c)
 {
        struct sk_buff *skb;
+       struct nlmsgerr *e;
 
        /*
         *      Play the pending entries through our router
@@ -515,7 +519,9 @@ static void ipmr_cache_resolve(struct mfc_cache *uc, struct mfc_cache *c)
                                nlh->nlmsg_type = NLMSG_ERROR;
                                nlh->nlmsg_len = NLMSG_LENGTH(sizeof(struct nlmsgerr));
                                skb_trim(skb, nlh->nlmsg_len);
-                               ((struct nlmsgerr*)NLMSG_DATA(nlh))->error = -EMSGSIZE;
+                               e = NLMSG_DATA(nlh);
+                               e->error = -EMSGSIZE;
+                               memset(&e->msg, 0, sizeof(e->msg));
                        }
                        err = netlink_unicast(rtnl, skb, NETLINK_CB(skb).dst_pid, MSG_DONTWAIT);
                } else

diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index a54d4ef..8140bed 100644 (file)
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -2923,6 +2923,7 @@ static int inet6_fill_ifinfo(struct sk_buff *skb, struct inet6_dev *idev,
        nlh = NLMSG_NEW(skb, pid, seq, event, sizeof(*r), flags);
        r = NLMSG_DATA(nlh);
        r->ifi_family = AF_INET6;
+       r->__ifi_pad = 0;
        r->ifi_type = dev->type;
        r->ifi_index = dev->ifindex;
        r->ifi_flags = dev_get_flags(dev);

diff --git a/net/sched/act_api.c b/net/sched/act_api.c
index 9594206..249c619 100644 (file)
--- a/net/sched/act_api.c
+++ b/net/sched/act_api.c
@@ -439,6 +439,8 @@ tca_get_fill(struct sk_buff *skb, struct tc_action *a, u32 pid, u32 seq,
 
        t = NLMSG_DATA(nlh);
        t->tca_family = AF_UNSPEC;
+       t->tca__pad1 = 0;
+       t->tca__pad2 = 0;
        
        x = (struct rtattr*) skb->tail;
        RTA_PUT(skb, TCA_ACT_TAB, 0, NULL);
@@ -580,6 +582,8 @@ static int tca_action_flush(struct rtattr *rta, struct nlmsghdr *n, u32 pid)
        nlh = NLMSG_PUT(skb, pid, n->nlmsg_seq, RTM_DELACTION, sizeof(*t));
        t = NLMSG_DATA(nlh);
        t->tca_family = AF_UNSPEC;
+       t->tca__pad1 = 0;
+       t->tca__pad2 = 0;
 
        x = (struct rtattr *) skb->tail;
        RTA_PUT(skb, TCA_ACT_TAB, 0, NULL);
@@ -687,7 +691,9 @@ static int tcf_add_notify(struct tc_action *a, u32 pid, u32 seq, int event,
        nlh = NLMSG_NEW(skb, pid, seq, event, sizeof(*t), flags);
        t = NLMSG_DATA(nlh);
        t->tca_family = AF_UNSPEC;
-       
+       t->tca__pad1 = 0;
+       t->tca__pad2 = 0;
+
        x = (struct rtattr*) skb->tail;
        RTA_PUT(skb, TCA_ACT_TAB, 0, NULL);
 
@@ -842,6 +848,8 @@ tc_dump_action(struct sk_buff *skb, struct netlink_callback *cb)
                        cb->nlh->nlmsg_type, sizeof(*t));
        t = NLMSG_DATA(nlh);
        t->tca_family = AF_UNSPEC;
+       t->tca__pad1 = 0;
+       t->tca__pad2 = 0;
 
        x = (struct rtattr *) skb->tail;
        RTA_PUT(skb, TCA_ACT_TAB, 0, NULL);

diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
index 1616bf5..3b5714e 100644 (file)
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c
@@ -331,6 +331,8 @@ tcf_fill_node(struct sk_buff *skb, struct tcf_proto *tp, unsigned long fh,
        nlh = NLMSG_NEW(skb, pid, seq, event, sizeof(*tcm), flags);
        tcm = NLMSG_DATA(nlh);
        tcm->tcm_family = AF_UNSPEC;
+       tcm->tcm__pad1 = 0;
+       tcm->tcm__pad1 = 0;
        tcm->tcm_ifindex = tp->q->dev->ifindex;
        tcm->tcm_parent = tp->classid;
        tcm->tcm_info = TC_H_MAKE(tp->prio, tp->protocol);

diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c
index 97c1c75..05e6e0a 100644 (file)
--- a/net/sched/sch_api.c
+++ b/net/sched/sch_api.c
@@ -770,6 +770,8 @@ static int tc_fill_qdisc(struct sk_buff *skb, struct Qdisc *q, u32 clid,
        nlh = NLMSG_NEW(skb, pid, seq, event, sizeof(*tcm), flags);
        tcm = NLMSG_DATA(nlh);
        tcm->tcm_family = AF_UNSPEC;
+       tcm->tcm__pad1 = 0;
+       tcm->tcm__pad2 = 0;
        tcm->tcm_ifindex = q->dev->ifindex;
        tcm->tcm_parent = clid;
        tcm->tcm_handle = q->handle;

diff --git a/net/sched/sch_cbq.c b/net/sched/sch_cbq.c
index d43e3b8..baeb311 100644 (file)
--- a/net/sched/sch_cbq.c
+++ b/net/sched/sch_cbq.c
@@ -1563,6 +1563,8 @@ static __inline__ int cbq_dump_police(struct sk_buff *skb, struct cbq_class *cl)
 
        if (cl->police) {
                opt.police = cl->police;
+               opt.__res1 = 0;
+               opt.__res2 = 0;
                RTA_PUT(skb, TCA_CBQ_POLICE, sizeof(opt), &opt);
        }
        return skb->len;