Messages in this thread | | | Date | Tue, 24 Apr 2018 21:48:26 -0700 | From | Bjorn Andersson <> | Subject | Re: [PATCH 4/6] soc: qcom: smem: fix off-by-one error in qcom_smem_alloc_private() |
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On Tue 10 Apr 15:25 PDT 2018, Alex Elder wrote:
> It's OK if the space for a newly-allocated uncached entry actually > touches the free cached space boundary. It's only a problem if it > would cross it. > > Signed-off-by: Alex Elder <elder@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Regards, Bjorn
> --- > drivers/soc/qcom/smem.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/soc/qcom/smem.c b/drivers/soc/qcom/smem.c > index 82f0908b90e1..0ed263055988 100644 > --- a/drivers/soc/qcom/smem.c > +++ b/drivers/soc/qcom/smem.c > @@ -375,7 +375,7 @@ static int qcom_smem_alloc_private(struct qcom_smem *smem, > > /* Check that we don't grow into the cached region */ > alloc_size = sizeof(*hdr) + ALIGN(size, 8); > - if ((void *)hdr + alloc_size >= cached) { > + if ((void *)hdr + alloc_size > cached) { > dev_err(smem->dev, "Out of memory\n"); > return -ENOSPC; > } > -- > 2.14.1 >
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