Messages in this thread | | | Subject | Re: [PATCH][next] thermal: qcom: tsens-v1: fix kfree of a non-pointer value | From | Srinivas Kandagatla <> | Date | Tue, 22 Oct 2019 17:44:21 +0100 |
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On 22/10/2019 14:06, Amit Kucheria wrote: > On Tue, Oct 22, 2019 at 4:48 PM Colin King <colin.king@canonical.com> wrote: >> >> From: Colin Ian King <colin.king@canonical.com> >> >> Currently the kfree of pointer qfprom_cdata is kfreeing an >> error value that has been cast to a pointer rather than a >> valid address. Fix this by removing the kfree. > > Hmm, we just added this to other places[1] as a fix for mem leaks > using the nvmem api. > This patch has nothing to do with the memleak fix. > I think we need to fix up the qfprom_read wrapper. Srini?
not sure how we can fix that, as the pointer returned from read is needs to be freed by the caller after its done with it!
--srini
> > [1] https://lore.kernel.org/stable/20191010083616.685532154@linuxfoundation.org/
> >> Fixes: 95ededc17e4e ("thermal: qcom: tsens-v1: Add support for MSM8956 and MSM8976") >> Signed-off-by: Colin Ian King <colin.king@canonical.com> >> --- >> drivers/thermal/qcom/tsens-v1.c | 4 +--- >> 1 file changed, 1 insertion(+), 3 deletions(-) >> >> diff --git a/drivers/thermal/qcom/tsens-v1.c b/drivers/thermal/qcom/tsens-v1.c >> index 2d1077b64887..bd2ddb684a45 100644 >> --- a/drivers/thermal/qcom/tsens-v1.c >> +++ b/drivers/thermal/qcom/tsens-v1.c >> @@ -240,10 +240,8 @@ static int calibrate_8976(struct tsens_priv *priv) >> u32 *qfprom_cdata; >> >> qfprom_cdata = (u32 *)qfprom_read(priv->dev, "calib"); >> - if (IS_ERR(qfprom_cdata)) { >> - kfree(qfprom_cdata); >> + if (IS_ERR(qfprom_cdata)) >> return PTR_ERR(qfprom_cdata); >> - } >> >> mode = (qfprom_cdata[4] & MSM8976_CAL_SEL_MASK); >> dev_dbg(priv->dev, "calibration mode is %d\n", mode); >> -- >> 2.20.1 >>
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