* [PATCH] scsi: lpfc: fix kzalloc-simple.cocci warnings
@ 2017-10-11 19:42 Vasyl Gomonovych
2017-11-03 15:50 ` James Smart
2017-11-03 16:26 ` Martin K. Petersen
0 siblings, 2 replies; 3+ messages in thread
From: Vasyl Gomonovych @ 2017-10-11 19:42 UTC (permalink / raw)
To: linux-scsi, linux-kernel
Cc: james.smart, dick.kennedy, jejb, martin.petersen, gomonovych
drivers/scsi/lpfc/lpfc_debugfs.c:5460:22-29: WARNING: kzalloc should be used for phba -> nvmeio_trc, instead of kmalloc/memset
drivers/scsi/lpfc/lpfc_debugfs.c:2230:20-27: WARNING: kzalloc should be used for phba -> nvmeio_trc, instead of kmalloc/memset
Use kzalloc rather than kmalloc followed by memset with 0
Generated by: scripts/coccinelle/api/alloc/kzalloc-simple.cocci
Signed-off-by: Vasyl Gomonovych <gomonovych@gmail.com>
---
drivers/scsi/lpfc/lpfc_debugfs.c | 9 ++-------
1 file changed, 2 insertions(+), 7 deletions(-)
diff --git a/drivers/scsi/lpfc/lpfc_debugfs.c b/drivers/scsi/lpfc/lpfc_debugfs.c
index d50c481..2bf5ad3 100644
--- a/drivers/scsi/lpfc/lpfc_debugfs.c
+++ b/drivers/scsi/lpfc/lpfc_debugfs.c
@@ -2227,7 +2227,7 @@
kfree(phba->nvmeio_trc);
/* Allocate new trace buffer and initialize */
- phba->nvmeio_trc = kmalloc((sizeof(struct lpfc_debugfs_nvmeio_trc) *
+ phba->nvmeio_trc = kzalloc((sizeof(struct lpfc_debugfs_nvmeio_trc) *
sz), GFP_KERNEL);
if (!phba->nvmeio_trc) {
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
@@ -2235,8 +2235,6 @@
"nvmeio_trc buffer\n");
return -ENOMEM;
}
- memset(phba->nvmeio_trc, 0,
- (sizeof(struct lpfc_debugfs_nvmeio_trc) * sz));
atomic_set(&phba->nvmeio_trc_cnt, 0);
phba->nvmeio_trc_on = 0;
phba->nvmeio_trc_output_idx = 0;
@@ -5457,7 +5455,7 @@ static int lpfc_idiag_cmd_get(const char __user *buf, size_t nbytes,
phba->nvmeio_trc_size = lpfc_debugfs_max_nvmeio_trc;
/* Allocate trace buffer and initialize */
- phba->nvmeio_trc = kmalloc(
+ phba->nvmeio_trc = kzalloc(
(sizeof(struct lpfc_debugfs_nvmeio_trc) *
phba->nvmeio_trc_size), GFP_KERNEL);
@@ -5467,9 +5465,6 @@ static int lpfc_idiag_cmd_get(const char __user *buf, size_t nbytes,
"nvmeio_trc buffer\n");
goto nvmeio_off;
}
- memset(phba->nvmeio_trc, 0,
- (sizeof(struct lpfc_debugfs_nvmeio_trc) *
- phba->nvmeio_trc_size));
phba->nvmeio_trc_on = 1;
phba->nvmeio_trc_output_idx = 0;
phba->nvmeio_trc = NULL;
--
1.9.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH] scsi: lpfc: fix kzalloc-simple.cocci warnings
2017-10-11 19:42 [PATCH] scsi: lpfc: fix kzalloc-simple.cocci warnings Vasyl Gomonovych
@ 2017-11-03 15:50 ` James Smart
2017-11-03 16:26 ` Martin K. Petersen
1 sibling, 0 replies; 3+ messages in thread
From: James Smart @ 2017-11-03 15:50 UTC (permalink / raw)
To: Vasyl Gomonovych, linux-scsi, linux-kernel
Cc: dick.kennedy, jejb, martin.petersen
On 10/11/2017 12:42 PM, Vasyl Gomonovych wrote:
> drivers/scsi/lpfc/lpfc_debugfs.c:5460:22-29: WARNING: kzalloc should be used for phba -> nvmeio_trc, instead of kmalloc/memset
> drivers/scsi/lpfc/lpfc_debugfs.c:2230:20-27: WARNING: kzalloc should be used for phba -> nvmeio_trc, instead of kmalloc/memset
>
> Use kzalloc rather than kmalloc followed by memset with 0
>
> Generated by: scripts/coccinelle/api/alloc/kzalloc-simple.cocci
>
> Signed-off-by: Vasyl Gomonovych <gomonovych@gmail.com>
> ---
> drivers/scsi/lpfc/lpfc_debugfs.c | 9 ++-------
> 1 file changed, 2 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/scsi/lpfc/lpfc_debugfs.c b/drivers/scsi/lpfc/lpfc_debugfs.c
> index d50c481..2bf5ad3 100644
> --- a/drivers/scsi/lpfc/lpfc_debugfs.c
> +++ b/drivers/scsi/lpfc/lpfc_debugfs.c
> @@ -2227,7 +2227,7 @@
> kfree(phba->nvmeio_trc);
>
> /* Allocate new trace buffer and initialize */
> - phba->nvmeio_trc = kmalloc((sizeof(struct lpfc_debugfs_nvmeio_trc) *
> + phba->nvmeio_trc = kzalloc((sizeof(struct lpfc_debugfs_nvmeio_trc) *
> sz), GFP_KERNEL);
> if (!phba->nvmeio_trc) {
> lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
> @@ -2235,8 +2235,6 @@
> "nvmeio_trc buffer\n");
> return -ENOMEM;
> }
> - memset(phba->nvmeio_trc, 0,
> - (sizeof(struct lpfc_debugfs_nvmeio_trc) * sz));
> atomic_set(&phba->nvmeio_trc_cnt, 0);
> phba->nvmeio_trc_on = 0;
> phba->nvmeio_trc_output_idx = 0;
> @@ -5457,7 +5455,7 @@ static int lpfc_idiag_cmd_get(const char __user *buf, size_t nbytes,
> phba->nvmeio_trc_size = lpfc_debugfs_max_nvmeio_trc;
>
> /* Allocate trace buffer and initialize */
> - phba->nvmeio_trc = kmalloc(
> + phba->nvmeio_trc = kzalloc(
> (sizeof(struct lpfc_debugfs_nvmeio_trc) *
> phba->nvmeio_trc_size), GFP_KERNEL);
>
> @@ -5467,9 +5465,6 @@ static int lpfc_idiag_cmd_get(const char __user *buf, size_t nbytes,
> "nvmeio_trc buffer\n");
> goto nvmeio_off;
> }
> - memset(phba->nvmeio_trc, 0,
> - (sizeof(struct lpfc_debugfs_nvmeio_trc) *
> - phba->nvmeio_trc_size));
> phba->nvmeio_trc_on = 1;
> phba->nvmeio_trc_output_idx = 0;
> phba->nvmeio_trc = NULL;
looks good.
Signed-off-by: James Smart <james.smart@broadcom.com>
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH] scsi: lpfc: fix kzalloc-simple.cocci warnings
2017-10-11 19:42 [PATCH] scsi: lpfc: fix kzalloc-simple.cocci warnings Vasyl Gomonovych
2017-11-03 15:50 ` James Smart
@ 2017-11-03 16:26 ` Martin K. Petersen
1 sibling, 0 replies; 3+ messages in thread
From: Martin K. Petersen @ 2017-11-03 16:26 UTC (permalink / raw)
To: Vasyl Gomonovych
Cc: linux-scsi, linux-kernel, james.smart, dick.kennedy, jejb,
martin.petersen
Vasyl,
> drivers/scsi/lpfc/lpfc_debugfs.c:5460:22-29: WARNING: kzalloc should be used for phba -> nvmeio_trc, instead of kmalloc/memset
> drivers/scsi/lpfc/lpfc_debugfs.c:2230:20-27: WARNING: kzalloc should be used for phba -> nvmeio_trc, instead of kmalloc/memset
>
> Use kzalloc rather than kmalloc followed by memset with 0
Applied to 4.15/scsi-queue.
--
Martin K. Petersen Oracle Linux Engineering
^ permalink raw reply [flat|nested] 3+ messages in thread
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2017-10-11 19:42 [PATCH] scsi: lpfc: fix kzalloc-simple.cocci warnings Vasyl Gomonovych
2017-11-03 15:50 ` James Smart
2017-11-03 16:26 ` Martin K. Petersen
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