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authorJiasheng Jiang <jiasheng@iscas.ac.cn>2021-12-29 11:21:18 +0800
committerJakub Kicinski <kuba@kernel.org>2021-12-29 17:53:24 -0800
commit92a34ab169f9eefe29cd420ce96b0a0a2a1da853 (patch)
treee29ba093f8eecd7ecaac4103aba985787ec58e01 /net
parent168fed986b3a7ec7b98cab1fe84e2f282b9e6a8f (diff)
downloadlinux-92a34ab169f9eefe29cd420ce96b0a0a2a1da853.tar.bz2
net/ncsi: check for error return from call to nla_put_u32
As we can see from the comment of the nla_put() that it could return -EMSGSIZE if the tailroom of the skb is insufficient. Therefore, it should be better to check the return value of the nla_put_u32 and return the error code if error accurs. Also, there are many other functions have the same problem, and if this patch is correct, I will commit a new version to fix all. Fixes: 955dc68cb9b2 ("net/ncsi: Add generic netlink family") Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn> Link: https://lore.kernel.org/r/20211229032118.1706294-1-jiasheng@iscas.ac.cn Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net')
-rw-r--r--net/ncsi/ncsi-netlink.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/net/ncsi/ncsi-netlink.c b/net/ncsi/ncsi-netlink.c
index bb5f1650f11c..c189b4c8a182 100644
--- a/net/ncsi/ncsi-netlink.c
+++ b/net/ncsi/ncsi-netlink.c
@@ -112,7 +112,11 @@ static int ncsi_write_package_info(struct sk_buff *skb,
pnest = nla_nest_start_noflag(skb, NCSI_PKG_ATTR);
if (!pnest)
return -ENOMEM;
- nla_put_u32(skb, NCSI_PKG_ATTR_ID, np->id);
+ rc = nla_put_u32(skb, NCSI_PKG_ATTR_ID, np->id);
+ if (rc) {
+ nla_nest_cancel(skb, pnest);
+ return rc;
+ }
if ((0x1 << np->id) == ndp->package_whitelist)
nla_put_flag(skb, NCSI_PKG_ATTR_FORCED);
cnest = nla_nest_start_noflag(skb, NCSI_PKG_ATTR_CHANNEL_LIST);