Re: [PATCH V2] Fix unsafe memory access by memcmp

From: Michael Straube
Date: Mon Apr 04 2022 - 04:02:36 EST

On 4/4/22 04:52, Charlie Sands wrote:
This patch fixes sparse warnings about the memcmp function unsafely
accessing userspace memory without first copying it to kernel space.

Signed-off-by: Charlie Sands <sandsch@xxxxxxxxxxxxxxxxxxxxx>

V2: Fixed warning and changed variable name as suggested
by Greg K. H. and improved error checking on the "copy_from_user" function as
suggested by Pavel Skripkin.

drivers/staging/r8188eu/os_dep/ioctl_linux.c | 21 ++++++++++++--------
1 file changed, 13 insertions(+), 8 deletions(-)

Hi Charlie,

thanks for your patch. Looks good to me, but you should include
staging: r8188eu: in the subject line.

"staging: r8188eu: Fix unsafe memory access by memcmp"