* [PATCH -next] eeprom: at25: Replace strncpy() with strscpy()
@ 2022-01-18 18:20 Kees Cook
2022-01-26 19:48 ` Ralph Siemsen
0 siblings, 1 reply; 3+ messages in thread
From: Kees Cook @ 2022-01-18 18:20 UTC (permalink / raw)
To: Greg Kroah-Hartman
Cc: Kees Cook, Andy Shevchenko, Arnd Bergmann, Jiri Prchal,
Mark Brown, Ralph Siemsen, linux-kernel, linux-hardening
Use strscpy() instead of strncpy(), since its use has been deprecated[1].
[1] https://www.kernel.org/doc/html/latest/process/deprecated.html#strncpy-on-nul-terminated-strings
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Jiri Prchal <jiri.prchal@aksignal.cz>
Signed-off-by: Kees Cook <keescook@chromium.org>
---
drivers/misc/eeprom/at25.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/misc/eeprom/at25.c b/drivers/misc/eeprom/at25.c
index bee727ed98db..91f96abbb3f9 100644
--- a/drivers/misc/eeprom/at25.c
+++ b/drivers/misc/eeprom/at25.c
@@ -309,7 +309,7 @@ static int at25_fw_to_chip(struct device *dev, struct spi_eeprom *chip)
u32 val;
int err;
- strncpy(chip->name, "at25", sizeof(chip->name));
+ strscpy(chip->name, "at25", sizeof(chip->name));
err = device_property_read_u32(dev, "size", &val);
if (err)
@@ -370,7 +370,7 @@ static int at25_fram_to_chip(struct device *dev, struct spi_eeprom *chip)
u8 id[FM25_ID_LEN];
int i;
- strncpy(chip->name, "fm25", sizeof(chip->name));
+ strscpy(chip->name, "fm25", sizeof(chip->name));
/* Get ID of chip */
fm25_aux_read(at25, id, FM25_RDID, FM25_ID_LEN);
--
2.30.2
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH -next] eeprom: at25: Replace strncpy() with strscpy()
2022-01-18 18:20 [PATCH -next] eeprom: at25: Replace strncpy() with strscpy() Kees Cook
@ 2022-01-26 19:48 ` Ralph Siemsen
2022-01-26 20:00 ` Kees Cook
0 siblings, 1 reply; 3+ messages in thread
From: Ralph Siemsen @ 2022-01-26 19:48 UTC (permalink / raw)
To: Kees Cook
Cc: Greg Kroah-Hartman, Andy Shevchenko, Arnd Bergmann, Jiri Prchal,
Mark Brown, linux-kernel, linux-hardening
Hi Kees,
On Tue, Jan 18, 2022 at 10:20:47AM -0800, Kees Cook wrote:
>Use strscpy() instead of strncpy(), since its use has been deprecated[1].
>
>[1]
>https://www.kernel.org/doc/html/latest/process/deprecated.html#strncpy-on-nul-terminated-strings
Along with your other fix to restore the missing kzalloc(), I tested
this change on 32-bit arm system, and it worked as expected.
Tested-by: Ralph Siemsen <ralph.siemsen@linaro.org>
Cheers,
-Ralph
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH -next] eeprom: at25: Replace strncpy() with strscpy()
2022-01-26 19:48 ` Ralph Siemsen
@ 2022-01-26 20:00 ` Kees Cook
0 siblings, 0 replies; 3+ messages in thread
From: Kees Cook @ 2022-01-26 20:00 UTC (permalink / raw)
To: Ralph Siemsen
Cc: Greg Kroah-Hartman, Andy Shevchenko, Arnd Bergmann, Jiri Prchal,
Mark Brown, linux-kernel, linux-hardening
On Wed, Jan 26, 2022 at 02:48:39PM -0500, Ralph Siemsen wrote:
> Hi Kees,
>
> On Tue, Jan 18, 2022 at 10:20:47AM -0800, Kees Cook wrote:
> > Use strscpy() instead of strncpy(), since its use has been deprecated[1].
> >
> > [1] https://www.kernel.org/doc/html/latest/process/deprecated.html#strncpy-on-nul-terminated-strings
>
> Along with your other fix to restore the missing kzalloc(), I tested this
> change on 32-bit arm system, and it worked as expected.
>
> Tested-by: Ralph Siemsen <ralph.siemsen@linaro.org>
Thanks!
--
Kees Cook
^ permalink raw reply [flat|nested] 3+ messages in thread
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2022-01-18 18:20 [PATCH -next] eeprom: at25: Replace strncpy() with strscpy() Kees Cook
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