| Message ID | 20240223-strncpy-drivers-scsi-mpi3mr-mpi3mr_fw-c-v1-6-9cd3882f0700@google.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | scsi: replace deprecated strncpy | expand |
On Fri, Feb 23, 2024 at 10:23:11PM +0000, Justin Stitt wrote: > buffer->driver_version is sized 32: > | struct bmic_host_wellness_driver_version { > | ... > | char driver_version[32]; > ... the source string "Linux " + DRIVER_VERISON is sized at 16. There's > really no bug in the existing code since the buffers are sized > appropriately with great care taken to manually NUL-terminate the > destination buffer. Nonetheless, let's make the swap over to strscpy() > for robustness' (and readability's) sake. > > Signed-off-by: Justin Stitt <justinstitt@google.com> Yup, good cleanup. Reviewed-by: Kees Cook <keescook@chromium.org>
diff --git a/drivers/scsi/smartpqi/smartpqi_init.c b/drivers/scsi/smartpqi/smartpqi_init.c index ceff1ec13f9e..bfe6f42e8e96 100644 --- a/drivers/scsi/smartpqi/smartpqi_init.c +++ b/drivers/scsi/smartpqi/smartpqi_init.c @@ -1041,9 +1041,8 @@ static int pqi_write_driver_version_to_host_wellness( buffer->driver_version_tag[1] = 'V'; put_unaligned_le16(sizeof(buffer->driver_version), &buffer->driver_version_length); - strncpy(buffer->driver_version, "Linux " DRIVER_VERSION, - sizeof(buffer->driver_version) - 1); - buffer->driver_version[sizeof(buffer->driver_version) - 1] = '\0'; + strscpy(buffer->driver_version, "Linux " DRIVER_VERSION, + sizeof(buffer->driver_version)); buffer->dont_write_tag[0] = 'D'; buffer->dont_write_tag[1] = 'W'; buffer->end_tag[0] = 'Z';
buffer->driver_version is sized 32: | struct bmic_host_wellness_driver_version { | ... | char driver_version[32]; ... the source string "Linux " + DRIVER_VERISON is sized at 16. There's really no bug in the existing code since the buffers are sized appropriately with great care taken to manually NUL-terminate the destination buffer. Nonetheless, let's make the swap over to strscpy() for robustness' (and readability's) sake. Signed-off-by: Justin Stitt <justinstitt@google.com> --- drivers/scsi/smartpqi/smartpqi_init.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-)