linux-kernel - Re: [PATCH][next] xfrm: Add error handling when nla_put

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Message-ID: <20241113105939.GY4507@kernel.org>
Date: Wed, 13 Nov 2024 10:59:39 +0000
From: Simon Horman <horms@...nel.org>
To: "Everest K.C." <everestkc@...restkc.com.np>
Cc: steffen.klassert@...unet.com, herbert@...dor.apana.org.au,
	davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
	pabeni@...hat.com, netdev@...r.kernel.org,
	kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH][next] xfrm: Add error handling when nla_put_u32()
 returns an error

On Tue, Nov 12, 2024 at 04:36:06PM -0700, Everest K.C. wrote:
> 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@...restkc.com.np>

Reviewed-by: Simon Horman <horms@...nel.org>

For future reference, I think the appropriate target for this tree
is ipsec-next rather than next.

	Subject: [PATCH ipsec-next] xfrm: ...

...