6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Everest K.C <everestkc@xxxxxxxxxxxxxxxx>
commit 9d287e70c51f1c141ac588add261ed2efdd6fc6b upstream.
Error handling is missing when call to nla_put_u32() fails.
Handle the error when the call to nla_put_u32() returns an error.
The error was reported by Coverity Scan.
Report:
CID 1601525: (#1 of 1): Unused value (UNUSED_VALUE)
returned_value: Assigning value from nla_put_u32(skb, XFRMA_SA_PCPU, x->pcpu_num)
to err here, but that stored value is overwritten before it can be used
Fixes: 1ddf9916ac09 ("xfrm: Add support for per cpu xfrm state handling.")
Signed-off-by: Everest K.C. <everestkc@xxxxxxxxxxxxxxxx>
Reviewed-by: Simon Horman <horms@xxxxxxxxxx>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@xxxxxxxxx>
Signed-off-by: Steffen Klassert <steffen.klassert@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/xfrm/xfrm_user.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c
@@ -2609,8 +2609,11 @@ static int build_aevent(struct sk_buff *
err = xfrm_if_id_put(skb, x->if_id);
if (err)
goto out_cancel;
- if (x->pcpu_num != UINT_MAX)
+ if (x->pcpu_num != UINT_MAX) {
err = nla_put_u32(skb, XFRMA_SA_PCPU, x->pcpu_num);
+ if (err)
+ goto out_cancel;
+ }
if (x->dir) {
err = nla_put_u8(skb, XFRMA_SA_DIR, x->dir);
