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Message-ID: <20231017083723.1364940-6-steffen.klassert@secunet.com> Date: Tue, 17 Oct 2023 10:37:21 +0200 From: Steffen Klassert <steffen.klassert@...unet.com> To: David Miller <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org> CC: Herbert Xu <herbert@...dor.apana.org.au>, Steffen Klassert <steffen.klassert@...unet.com>, <netdev@...r.kernel.org> Subject: [PATCH 5/7] net: ipv6: fix return value check in esp_remove_trailer From: Ma Ke <make_ruc2021@....com> In esp_remove_trailer(), to avoid an unexpected result returned by pskb_trim, we should check the return value of pskb_trim(). Signed-off-by: Ma Ke <make_ruc2021@....com> Signed-off-by: Steffen Klassert <steffen.klassert@...unet.com> --- net/ipv6/esp6.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/net/ipv6/esp6.c b/net/ipv6/esp6.c index fddd0cbdede1..e023d29e919c 100644 --- a/net/ipv6/esp6.c +++ b/net/ipv6/esp6.c @@ -770,7 +770,9 @@ static inline int esp_remove_trailer(struct sk_buff *skb) skb->csum = csum_block_sub(skb->csum, csumdiff, skb->len - trimlen); } - pskb_trim(skb, skb->len - trimlen); + ret = pskb_trim(skb, skb->len - trimlen); + if (unlikely(ret)) + return ret; ret = nexthdr[1]; -- 2.34.1
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