Messages in this thread Patch in this message | | | From | Ma Ke <> | Subject | [PATCH] um: vector: fix return value check in vector_mmsg_rx | Date | Sat, 7 Oct 2023 08:51:04 +0800 |
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In vector_mmsg_rx, 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@163.com> --- arch/um/drivers/vector_kern.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/um/drivers/vector_kern.c b/arch/um/drivers/vector_kern.c index 131b7cb29576..c280ce5ea6ce 100644 --- a/arch/um/drivers/vector_kern.c +++ b/arch/um/drivers/vector_kern.c @@ -1013,8 +1013,8 @@ static int vector_mmsg_rx(struct vector_private *vp, int budget) skb->ip_summed = CHECKSUM_UNNECESSARY; } } - pskb_trim(skb, - mmsg_vector->msg_len - vp->rx_header_size); + if (pskb_trim(skb, mmsg_vector->msg_len - vp->rx_header_size)) + return 0; skb->protocol = eth_type_trans(skb, skb->dev); /* * We do not need to lock on updating stats here -- 2.37.2
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