From: Arnd Bergmann <arnd@kernel.org>
To: Florian Fainelli <florian.fainelli@broadcom.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Arnd Bergmann <arnd@arndb.de>,
Broadcom internal kernel review list
<bcm-kernel-feedback-list@broadcom.com>,
linux-rpi-kernel@lists.infradead.org,
linux-arm-kernel@lists.infradead.org,
linux-staging@lists.linux.dev, linux-kernel@vger.kernel.org
Subject: [PATCH] staging: vc04_services: changen strncpy() to strscpy_pad()
Date: Wed, 13 Mar 2024 17:36:56 +0100 [thread overview]
Message-ID: <20240313163712.224585-1-arnd@kernel.org> (raw)
From: Arnd Bergmann <arnd@arndb.de>
gcc-14 warns about this strncpy() that results in a non-terminated
string for an overflow:
In file included from include/linux/string.h:369,
from drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c:20:
In function 'strncpy',
inlined from 'create_component' at drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c:940:2:
include/linux/fortify-string.h:108:33: error: '__builtin_strncpy' specified bound 128 equals destination size [-Werror=stringop-truncation]
Change it to strscpy_pad(), which produces a properly terminated and
zero-padded string.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c b/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c
index 258aa0e37f55..6ca5797aeae5 100644
--- a/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c
+++ b/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c
@@ -937,8 +937,8 @@ static int create_component(struct vchiq_mmal_instance *instance,
/* build component create message */
m.h.type = MMAL_MSG_TYPE_COMPONENT_CREATE;
m.u.component_create.client_component = component->client_component;
- strncpy(m.u.component_create.name, name,
- sizeof(m.u.component_create.name));
+ strscpy_pad(m.u.component_create.name, name,
+ sizeof(m.u.component_create.name));
ret = send_synchronous_mmal_msg(instance, &m,
sizeof(m.u.component_create),
--
2.39.2
next reply other threads:[~2024-03-13 16:37 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-13 16:36 Arnd Bergmann [this message]
2024-03-13 17:56 ` [PATCH] staging: vc04_services: changen strncpy() to strscpy_pad() Dan Carpenter
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