* [PATCH] iio: imu: adis16400: fix memory leak
@ 2019-09-18 17:03 Navid Emamdoost
2019-09-19 6:52 ` Ardelean, Alexandru
0 siblings, 1 reply; 5+ messages in thread
From: Navid Emamdoost @ 2019-09-18 17:03 UTC (permalink / raw)
Cc: emamd001, smccaman, kjlu, Navid Emamdoost, Lars-Peter Clausen,
Michael Hennerich, Stefan Popa, Jonathan Cameron, Hartmut Knaack,
Peter Meerwald-Stadler, linux-iio, linux-kernel
In adis_update_scan_mode_burst, if adis->buffer allocation fails release
the adis->xfer.
Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
---
drivers/iio/imu/adis_buffer.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/iio/imu/adis_buffer.c b/drivers/iio/imu/adis_buffer.c
index 9ac8356d9a95..1dbe25572a39 100644
--- a/drivers/iio/imu/adis_buffer.c
+++ b/drivers/iio/imu/adis_buffer.c
@@ -35,8 +35,10 @@ static int adis_update_scan_mode_burst(struct iio_dev *indio_dev,
return -ENOMEM;
adis->buffer = kzalloc(burst_length + sizeof(u16), GFP_KERNEL);
- if (!adis->buffer)
+ if (!adis->buffer) {
+ kfree(adis->xfer);
return -ENOMEM;
+ }
tx = adis->buffer + burst_length;
tx[0] = ADIS_READ_REG(adis->burst->reg_cmd);
--
2.17.1
^ permalink raw reply related [flat|nested] 5+ messages in thread* Re: [PATCH] iio: imu: adis16400: fix memory leak
2019-09-18 17:03 [PATCH] iio: imu: adis16400: fix memory leak Navid Emamdoost
@ 2019-09-19 6:52 ` Ardelean, Alexandru
2019-09-19 15:56 ` [PATCH v2] " Navid Emamdoost
0 siblings, 1 reply; 5+ messages in thread
From: Ardelean, Alexandru @ 2019-09-19 6:52 UTC (permalink / raw)
To: navid.emamdoost
Cc: Popa, Stefan Serban, emamd001, linux-iio, linux-kernel, jic23,
knaack.h, Hennerich, Michael, lars, smccaman, kjlu, pmeerw
On Wed, 2019-09-18 at 12:03 -0500, Navid Emamdoost wrote:
> [External]
>
Hey,
Thanks for this patch as well.
Comments inline here as well.
> In adis_update_scan_mode_burst, if adis->buffer allocation fails release
> the adis->xfer.
>
> Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
> ---
> drivers/iio/imu/adis_buffer.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/iio/imu/adis_buffer.c
> b/drivers/iio/imu/adis_buffer.c
> index 9ac8356d9a95..1dbe25572a39 100644
> --- a/drivers/iio/imu/adis_buffer.c
> +++ b/drivers/iio/imu/adis_buffer.c
> @@ -35,8 +35,10 @@ static int adis_update_scan_mode_burst(struct iio_dev
> *indio_dev,
> return -ENOMEM;
>
> adis->buffer = kzalloc(burst_length + sizeof(u16), GFP_KERNEL);
> - if (!adis->buffer)
> + if (!adis->buffer) {
> + kfree(adis->xfer);
Same as the other patch: it would be a good idea to do "adis->xfer = NULL"
here.
> return -ENOMEM;
> + }
>
> tx = adis->buffer + burst_length;
> tx[0] = ADIS_READ_REG(adis->burst->reg_cmd);
^ permalink raw reply [flat|nested] 5+ messages in thread* [PATCH v2] iio: imu: adis16400: fix memory leak
2019-09-19 6:52 ` Ardelean, Alexandru
@ 2019-09-19 15:56 ` Navid Emamdoost
2019-09-20 6:46 ` Ardelean, Alexandru
0 siblings, 1 reply; 5+ messages in thread
From: Navid Emamdoost @ 2019-09-19 15:56 UTC (permalink / raw)
To: alexandru.Ardelean
Cc: emamd001, smccaman, kjlu, Navid Emamdoost, Lars-Peter Clausen,
Michael Hennerich, Stefan Popa, Jonathan Cameron, Hartmut Knaack,
Peter Meerwald-Stadler, linux-iio, linux-kernel
In adis_update_scan_mode_burst, if adis->buffer allocation fails release
the adis->xfer.
v2: set adis->xfer = NULL to avoid any potential double free.
Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
---
drivers/iio/imu/adis_buffer.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/iio/imu/adis_buffer.c b/drivers/iio/imu/adis_buffer.c
index 9ac8356d9a95..78fe83c1f4fe 100644
--- a/drivers/iio/imu/adis_buffer.c
+++ b/drivers/iio/imu/adis_buffer.c
@@ -35,8 +35,11 @@ static int adis_update_scan_mode_burst(struct iio_dev *indio_dev,
return -ENOMEM;
adis->buffer = kzalloc(burst_length + sizeof(u16), GFP_KERNEL);
- if (!adis->buffer)
+ if (!adis->buffer) {
+ kfree(adis->xfer);
+ adis->xfer = NULL;
return -ENOMEM;
+ }
tx = adis->buffer + burst_length;
tx[0] = ADIS_READ_REG(adis->burst->reg_cmd);
--
2.17.1
^ permalink raw reply related [flat|nested] 5+ messages in thread* Re: [PATCH v2] iio: imu: adis16400: fix memory leak
2019-09-19 15:56 ` [PATCH v2] " Navid Emamdoost
@ 2019-09-20 6:46 ` Ardelean, Alexandru
2019-09-21 18:15 ` Jonathan Cameron
0 siblings, 1 reply; 5+ messages in thread
From: Ardelean, Alexandru @ 2019-09-20 6:46 UTC (permalink / raw)
To: navid.emamdoost
Cc: Popa, Stefan Serban, emamd001, linux-iio, linux-kernel, jic23,
knaack.h, Hennerich, Michael, lars, smccaman, kjlu, pmeerw
On Thu, 2019-09-19 at 10:56 -0500, Navid Emamdoost wrote:
> In adis_update_scan_mode_burst, if adis->buffer allocation fails release
> the adis->xfer.
>
> v2: set adis->xfer = NULL to avoid any potential double free.
>
Reviewed-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
> Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
> ---
> drivers/iio/imu/adis_buffer.c | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/iio/imu/adis_buffer.c
> b/drivers/iio/imu/adis_buffer.c
> index 9ac8356d9a95..78fe83c1f4fe 100644
> --- a/drivers/iio/imu/adis_buffer.c
> +++ b/drivers/iio/imu/adis_buffer.c
> @@ -35,8 +35,11 @@ static int adis_update_scan_mode_burst(struct iio_dev
> *indio_dev,
> return -ENOMEM;
>
> adis->buffer = kzalloc(burst_length + sizeof(u16), GFP_KERNEL);
> - if (!adis->buffer)
> + if (!adis->buffer) {
> + kfree(adis->xfer);
> + adis->xfer = NULL;
> return -ENOMEM;
> + }
>
> tx = adis->buffer + burst_length;
> tx[0] = ADIS_READ_REG(adis->burst->reg_cmd);
^ permalink raw reply [flat|nested] 5+ messages in thread* Re: [PATCH v2] iio: imu: adis16400: fix memory leak
2019-09-20 6:46 ` Ardelean, Alexandru
@ 2019-09-21 18:15 ` Jonathan Cameron
0 siblings, 0 replies; 5+ messages in thread
From: Jonathan Cameron @ 2019-09-21 18:15 UTC (permalink / raw)
To: Ardelean, Alexandru
Cc: navid.emamdoost, Popa, Stefan Serban, emamd001, linux-iio,
linux-kernel, knaack.h, Hennerich, Michael, lars, smccaman, kjlu,
pmeerw
On Fri, 20 Sep 2019 06:46:05 +0000
"Ardelean, Alexandru" <alexandru.Ardelean@analog.com> wrote:
> On Thu, 2019-09-19 at 10:56 -0500, Navid Emamdoost wrote:
> > In adis_update_scan_mode_burst, if adis->buffer allocation fails release
> > the adis->xfer.
> >
> > v2: set adis->xfer = NULL to avoid any potential double free.
> >
>
> Reviewed-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Applied to the fixes-togreg branch of iio.git.
Thanks,
Jonathan
>
> > Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
> > ---
> > drivers/iio/imu/adis_buffer.c | 5 ++++-
> > 1 file changed, 4 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/iio/imu/adis_buffer.c
> > b/drivers/iio/imu/adis_buffer.c
> > index 9ac8356d9a95..78fe83c1f4fe 100644
> > --- a/drivers/iio/imu/adis_buffer.c
> > +++ b/drivers/iio/imu/adis_buffer.c
> > @@ -35,8 +35,11 @@ static int adis_update_scan_mode_burst(struct iio_dev
> > *indio_dev,
> > return -ENOMEM;
> >
> > adis->buffer = kzalloc(burst_length + sizeof(u16), GFP_KERNEL);
> > - if (!adis->buffer)
> > + if (!adis->buffer) {
> > + kfree(adis->xfer);
> > + adis->xfer = NULL;
> > return -ENOMEM;
> > + }
> >
> > tx = adis->buffer + burst_length;
> > tx[0] = ADIS_READ_REG(adis->burst->reg_cmd);
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2019-09-21 18:15 UTC | newest]
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2019-09-18 17:03 [PATCH] iio: imu: adis16400: fix memory leak Navid Emamdoost
2019-09-19 6:52 ` Ardelean, Alexandru
2019-09-19 15:56 ` [PATCH v2] " Navid Emamdoost
2019-09-20 6:46 ` Ardelean, Alexandru
2019-09-21 18:15 ` Jonathan Cameron
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