`strncpy` is deprecated for use on NUL-terminated destination strings [1]. We should prefer more robust and less ambiguous string interfaces.
A suitable replacement is `strscpy` [2] due to the fact that it guarantees NUL-termination on the destination buffer. It does not seem like `ver->firmware_description` requires NUL-padding (which is a behavior that strncpy provides) but if it does let's opt for `strscpy_pad()`. Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#strncpy-on-nul-terminated-strings [1] Link: https://manpages.debian.org/testing/linux-manual-4.8/strscpy.9.en.html [2] Link: https://github.com/KSPP/linux/issues/90 Cc: linux-harden...@vger.kernel.org Signed-off-by: Justin Stitt <justinst...@google.com> --- Note: build-tested only. --- drivers/firmware/ti_sci.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/firmware/ti_sci.c b/drivers/firmware/ti_sci.c index 26a37f47f4ca..ce546f391959 100644 --- a/drivers/firmware/ti_sci.c +++ b/drivers/firmware/ti_sci.c @@ -485,7 +485,7 @@ static int ti_sci_cmd_get_revision(struct ti_sci_info *info) ver->abi_major = rev_info->abi_major; ver->abi_minor = rev_info->abi_minor; ver->firmware_revision = rev_info->firmware_revision; - strncpy(ver->firmware_description, rev_info->firmware_description, + strscpy(ver->firmware_description, rev_info->firmware_description, sizeof(ver->firmware_description)); fail: --- base-commit: 3669558bdf354cd352be955ef2764cde6a9bf5ec change-id: 20230913-strncpy-drivers-firmware-ti_sci-c-22667413c18f Best regards, -- Justin Stitt <justinst...@google.com>
