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xfrm: Add error handling when nla_put_u32() returns an error

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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: 1ddf9916ac ("xfrm: Add support for per cpu xfrm state handling.")
Signed-off-by: Everest K.C. <everestkc@everestkc.com.np>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
This commit is contained in:
Everest K.C 2024-11-12 16:36:06 -07:00 committed by Steffen Klassert
parent af2c4fa559
commit 9d287e70c5
1 changed files with 4 additions and 1 deletions
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5
net/xfrm/xfrm_user.c
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@ -2609,8 +2609,11 @@ static int build_aevent(struct sk_buff *skb, struct xfrm_state *x, const struct
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);