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| author | Mathias Krause <minipli@googlemail.com> | 2012-09-14 13:58:32 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-09-19 00:13:46 +0400 |
| commit | c25463722509fef0ed630b271576a8c9a70236f3 (patch) | |
| tree | 71ef50cc818d532ecc40589a2b722b0a877573a6 | |
| parent | 864745d291b5ba80ea0bd0edcbe67273de368836 (diff) | |
| download | linux-c25463722509fef0ed630b271576a8c9a70236f3.tar.xz | |
xfrm_user: return error pointer instead of NULL #2
When dump_one_policy() returns an error, e.g. because of a too small
buffer to dump the whole xfrm policy, xfrm_policy_netlink() returns
NULL instead of an error pointer. But its caller expects an error
pointer and therefore continues to operate on a NULL skbuff.
Signed-off-by: Mathias Krause <minipli@googlemail.com>
Acked-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/xfrm/xfrm_user.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c index dac08e2a5a93..d12b62547ad0 100644 --- a/net/xfrm/xfrm_user.c +++ b/net/xfrm/xfrm_user.c @@ -1548,6 +1548,7 @@ static struct sk_buff *xfrm_policy_netlink(struct sk_buff *in_skb, { struct xfrm_dump_info info; struct sk_buff *skb; + int err; skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); if (!skb) @@ -1558,9 +1559,10 @@ static struct sk_buff *xfrm_policy_netlink(struct sk_buff *in_skb, info.nlmsg_seq = seq; info.nlmsg_flags = 0; - if (dump_one_policy(xp, dir, 0, &info) < 0) { + err = dump_one_policy(xp, dir, 0, &info); + if (err) { kfree_skb(skb); - return NULL; + return ERR_PTR(err); } return skb; |