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Groups > linux.kernel > #1732238 > unrolled thread
| Started by | Srishti Sharma <srishtishar@gmail.com> |
|---|---|
| First post | 2017-09-14 14:10 +0200 |
| Last post | 2017-09-14 14:40 +0200 |
| Articles | 2 — 2 participants |
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[PATCH] Staging: lustre: obdclass: Use kcalloc instead of kzalloc Srishti Sharma <srishtishar@gmail.com> - 2017-09-14 14:10 +0200
Re: [Outreachy kernel] [PATCH] Staging: lustre: obdclass: Use kcalloc instead of kzalloc Julia Lawall <julia.lawall@lip6.fr> - 2017-09-14 14:40 +0200
| From | Srishti Sharma <srishtishar@gmail.com> |
|---|---|
| Date | 2017-09-14 14:10 +0200 |
| Subject | [PATCH] Staging: lustre: obdclass: Use kcalloc instead of kzalloc |
| Message-ID | <upB7X-4Sv-3@gated-at.bofh.it> |
Use kcalloc instead of kzalloc to check for overflow before
multiplication. Done using the following semantic patch by
coccinelle.
http://coccinelle.lip6.fr/rules/kzalloc.cocci
Signed-off-by: Srishti Sharma <srishtishar@gmail.com>
---
drivers/staging/lustre/lustre/obdclass/cl_object.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/staging/lustre/lustre/obdclass/cl_object.c b/drivers/staging/lustre/lustre/obdclass/cl_object.c
index 95c7fa3..28cb8489 100644
--- a/drivers/staging/lustre/lustre/obdclass/cl_object.c
+++ b/drivers/staging/lustre/lustre/obdclass/cl_object.c
@@ -1016,7 +1016,7 @@ int cl_global_init(void)
{
int result;
- cl_envs = kzalloc(sizeof(*cl_envs) * num_possible_cpus(), GFP_KERNEL);
+ cl_envs = kcalloc(num_possible_cpus(), sizeof(*cl_envs), GFP_KERNEL);
if (!cl_envs) {
result = -ENOMEM;
goto out;
--
2.7.4
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| From | Julia Lawall <julia.lawall@lip6.fr> |
|---|---|
| Date | 2017-09-14 14:40 +0200 |
| Subject | Re: [Outreachy kernel] [PATCH] Staging: lustre: obdclass: Use kcalloc instead of kzalloc |
| Message-ID | <upBB1-52v-43@gated-at.bofh.it> |
| In reply to | #1732238 |
On Thu, 14 Sep 2017, Srishti Sharma wrote:
> Use kcalloc instead of kzalloc to check for overflow before
> multiplication. Done using the following semantic patch by
> coccinelle.
>
> http://coccinelle.lip6.fr/rules/kzalloc.cocci
>
> Signed-off-by: Srishti Sharma <srishtishar@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
> ---
> drivers/staging/lustre/lustre/obdclass/cl_object.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/staging/lustre/lustre/obdclass/cl_object.c b/drivers/staging/lustre/lustre/obdclass/cl_object.c
> index 95c7fa3..28cb8489 100644
> --- a/drivers/staging/lustre/lustre/obdclass/cl_object.c
> +++ b/drivers/staging/lustre/lustre/obdclass/cl_object.c
> @@ -1016,7 +1016,7 @@ int cl_global_init(void)
> {
> int result;
>
> - cl_envs = kzalloc(sizeof(*cl_envs) * num_possible_cpus(), GFP_KERNEL);
> + cl_envs = kcalloc(num_possible_cpus(), sizeof(*cl_envs), GFP_KERNEL);
> if (!cl_envs) {
> result = -ENOMEM;
> goto out;
> --
> 2.7.4
>
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