greybus-dev December 2017

greybus-dev@lists.linaro.org

2 participants
3 discussions

Re: [greybus-dev] [PATCH] drivers/staging/greybus: fix max dup length for kstrndup

by Rui Miguel Silva

Hi Ma, Thanks for your patch. Please make sure you use scripts/get_maintainer.pl so that your patches goes to the right lists and people. I CC's them now. ;) On Tue 12 Dec 2017 at 09:25, Ma Shimiao wrote: > If source string longer than max, kstrndup will alloc max+1 space. > So, we should make sure the result will not over limit. I think we are good here. kstrndup alloc memory for us the max+1, and in fact we want to have the 32 chars plus the \0 set by kstrndup. So, I think the code as is now is ok. --- Cheers, Rui > > Signed-off-by: Ma Shimiao <mashimiao.fnst(a)cn.fujitsu.com> > --- > drivers/staging/greybus/light.c | 9 ++++++--- > drivers/staging/greybus/power_supply.c | 10 ++++++---- > 2 files changed, 12 insertions(+), 7 deletions(-) > > diff --git a/drivers/staging/greybus/light.c b/drivers/staging/greybus/light.c > index 010ae1e9c7fb..c7ac2ead5a07 100644 > --- a/drivers/staging/greybus/light.c > +++ b/drivers/staging/greybus/light.c > @@ -965,10 +965,12 @@ static int gb_lights_channel_config(struct gb_light *light, > channel->mode = le32_to_cpu(conf.mode); > channel->flags = le32_to_cpu(conf.flags); > channel->color = le32_to_cpu(conf.color); > - channel->color_name = kstrndup(conf.color_name, NAMES_MAX, GFP_KERNEL); > + channel->color_name = kstrndup(conf.color_name, > + NAMES_MAX - 1, GFP_KERNEL); > if (!channel->color_name) > return -ENOMEM; > - channel->mode_name = kstrndup(conf.mode_name, NAMES_MAX, GFP_KERNEL); > + channel->mode_name = kstrndup(conf.mode_name, > + NAMES_MAX - 1, GFP_KERNEL); > if (!channel->mode_name) > return -ENOMEM; > > @@ -1027,7 +1029,8 @@ static int gb_lights_light_config(struct gb_lights *glights, u8 id) > return -EINVAL; > > light->channels_count = conf.channel_count; > - light->name = kstrndup(conf.name, NAMES_MAX, GFP_KERNEL); > + light->name = kstrndup(conf.name, > + NAMES_MAX - 1, GFP_KERNEL); > > light->channels = kcalloc(light->channels_count, > sizeof(struct gb_channel), GFP_KERNEL); > diff --git a/drivers/staging/greybus/power_supply.c b/drivers/staging/greybus/power_supply.c > index 0529e5628c24..7bc76633866b 100644 > --- a/drivers/staging/greybus/power_supply.c > +++ b/drivers/staging/greybus/power_supply.c > @@ -487,14 +487,16 @@ static int gb_power_supply_description_get(struct gb_power_supply *gbpsy) > if (ret < 0) > return ret; > > - gbpsy->manufacturer = kstrndup(resp.manufacturer, PROP_MAX, GFP_KERNEL); > + gbpsy->manufacturer = kstrndup(resp.manufacturer, > + PROP_MAX - 1, GFP_KERNEL); > if (!gbpsy->manufacturer) > return -ENOMEM; > - gbpsy->model_name = kstrndup(resp.model, PROP_MAX, GFP_KERNEL); > + gbpsy->model_name = kstrndup(resp.model, > + PROP_MAX - 1, GFP_KERNEL); > if (!gbpsy->model_name) > return -ENOMEM; > - gbpsy->serial_number = kstrndup(resp.serial_number, PROP_MAX, > - GFP_KERNEL); > + gbpsy->serial_number = kstrndup(resp.serial_number, > + PROP_MAX - 1, GFP_KERNEL); > if (!gbpsy->serial_number) > return -ENOMEM;

7 years

[PATCH 4.14 21/75] staging: greybus: loopback: Fix iteration count on async path

by Greg Kroah-Hartman

4.14-stable review patch. If anyone has any objections, please let me know. ------------------ From: Bryan O'Donoghue <pure.logic(a)nexus-software.ie> [ Upstream commit 44b02da39210e6dd67e39ff1f48d30c56d384240 ] Commit 12927835d211 ("greybus: loopback: Add asynchronous bi-directional support") does what it says on the tin - namely, adds support for asynchronous bi-directional loopback operations. What it neglects to do though is increment the per-connection gb->iteration_count on an asynchronous operation error. This patch fixes that omission. Fixes: 12927835d211 ("greybus: loopback: Add asynchronous bi-directional support") Signed-off-by: Bryan O'Donoghue <pure.logic(a)nexus-software.ie> Reported-by: Mitch Tasman <tasman(a)leaflabs.com> Reviewed-by: Johan Hovold <johan(a)kernel.org> Cc: Alex Elder <elder(a)kernel.org> Cc: Mitch Tasman <tasman(a)leaflabs.com> Cc: greybus-dev(a)lists.linaro.org Cc: devel(a)driverdev.osuosl.org Cc: linux-kernel(a)vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Sasha Levin <alexander.levin(a)verizon.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/staging/greybus/loopback.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- a/drivers/staging/greybus/loopback.c +++ b/drivers/staging/greybus/loopback.c @@ -1042,8 +1042,10 @@ static int gb_loopback_fn(void *data) else if (type == GB_LOOPBACK_TYPE_SINK) error = gb_loopback_async_sink(gb, size); - if (error) + if (error) { gb->error++; + gb->iteration_count++; + } } else { /* We are effectively single threaded here */ if (type == GB_LOOPBACK_TYPE_PING)

7 years

[PATCH 4.9 015/109] staging: greybus: loopback: Fix iteration count on async path

by Greg Kroah-Hartman

4.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Bryan O'Donoghue <pure.logic(a)nexus-software.ie> [ Upstream commit 44b02da39210e6dd67e39ff1f48d30c56d384240 ] Commit 12927835d211 ("greybus: loopback: Add asynchronous bi-directional support") does what it says on the tin - namely, adds support for asynchronous bi-directional loopback operations. What it neglects to do though is increment the per-connection gb->iteration_count on an asynchronous operation error. This patch fixes that omission. Fixes: 12927835d211 ("greybus: loopback: Add asynchronous bi-directional support") Signed-off-by: Bryan O'Donoghue <pure.logic(a)nexus-software.ie> Reported-by: Mitch Tasman <tasman(a)leaflabs.com> Reviewed-by: Johan Hovold <johan(a)kernel.org> Cc: Alex Elder <elder(a)kernel.org> Cc: Mitch Tasman <tasman(a)leaflabs.com> Cc: greybus-dev(a)lists.linaro.org Cc: devel(a)driverdev.osuosl.org Cc: linux-kernel(a)vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Sasha Levin <alexander.levin(a)verizon.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/staging/greybus/loopback.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- a/drivers/staging/greybus/loopback.c +++ b/drivers/staging/greybus/loopback.c @@ -1034,8 +1034,10 @@ static int gb_loopback_fn(void *data) error = gb_loopback_async_sink(gb, size); } - if (error) + if (error) { gb->error++; + gb->iteration_count++; + } } else { /* We are effectively single threaded here */ if (type == GB_LOOPBACK_TYPE_PING)

7 years

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greybus-dev December 2017