Messages in this thread Patch in this message | | | Subject | [PATCH 1/3] hostap: Use memdup_user() rather than duplicating its implementation | From | SF Markus Elfring <> | Date | Sat, 20 Aug 2016 18:45:08 +0200 |
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From: Markus Elfring <elfring@users.sourceforge.net> Date: Sat, 20 Aug 2016 18:19:43 +0200
Reuse existing functionality from memdup_user() instead of keeping duplicate source code.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> --- .../net/wireless/intersil/hostap/hostap_ioctl.c | 22 ++++++---------------- 1 file changed, 6 insertions(+), 16 deletions(-)
diff --git a/drivers/net/wireless/intersil/hostap/hostap_ioctl.c b/drivers/net/wireless/intersil/hostap/hostap_ioctl.c index 3e5fa78..4e271f9 100644 --- a/drivers/net/wireless/intersil/hostap/hostap_ioctl.c +++ b/drivers/net/wireless/intersil/hostap/hostap_ioctl.c @@ -3041,14 +3041,9 @@ static int prism2_ioctl_priv_download(local_info_t *local, struct iw_point *p) p->length > 1024 || !p->pointer) return -EINVAL; - param = kmalloc(p->length, GFP_KERNEL); - if (param == NULL) - return -ENOMEM; - - if (copy_from_user(param, p->pointer, p->length)) { - ret = -EFAULT; - goto out; - } + param = memdup_user(p->pointer, p->length); + if (IS_ERR(param)) + return PTR_ERR(param); if (p->length < sizeof(struct prism2_download_param) + param->num_areas * sizeof(struct prism2_download_area)) { @@ -3803,14 +3798,9 @@ static int prism2_ioctl_priv_hostapd(local_info_t *local, struct iw_point *p) p->length > PRISM2_HOSTAPD_MAX_BUF_SIZE || !p->pointer) return -EINVAL; - param = kmalloc(p->length, GFP_KERNEL); - if (param == NULL) - return -ENOMEM; - - if (copy_from_user(param, p->pointer, p->length)) { - ret = -EFAULT; - goto out; - } + param = memdup_user(p->pointer, p->length); + if (IS_ERR(param)) + return PTR_ERR(param); switch (param->cmd) { case PRISM2_SET_ENCRYPTION: -- 2.9.3
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