From: Rodolfo Giometti <giometti@enneenne.com>
To: Lee Jones <lee.jones@linaro.org>,
arnd@arndb.de, gregkh@linuxfoundation.org
Cc: linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org,
Rodolfo Giometti <giometti@linux.it>,
"Eurotech S.p.A" <info@eurotech.it>
Subject: Re: [PATCH 01/10] misc: c2port: core: Ensure source size does not equal destination size in strncpy()
Date: Fri, 26 Jun 2020 15:15:43 +0200 [thread overview]
Message-ID: <7d8996e9-74d3-ca47-cae8-a457c9a4baab@enneenne.com> (raw)
In-Reply-To: <20200626130525.389469-2-lee.jones@linaro.org>
On 26/06/2020 15:05, Lee Jones wrote:
> We need to ensure there's a place for the NULL terminator.
>
> Fixes the following W=1 warning(s):
>
> In file included from include/linux/bitmap.h:9,
> from include/linux/nodemask.h:95,
> from include/linux/mmzone.h:17,
> from include/linux/gfp.h:6,
> from include/linux/umh.h:4,
> from include/linux/kmod.h:9,
> from include/linux/module.h:16,
> from drivers/misc/c2port/core.c:9:
> In function ‘strncpy’,
> inlined from ‘c2port_device_register’ at drivers/misc/c2port/core.c:926:2:
> include/linux/string.h:297:30: warning: ‘__builtin_strncpy’ specified bound 32 equals destination size [-Wstringop-truncation]
> 297 | #define __underlying_strncpy __builtin_strncpy
> | ^
> include/linux/string.h:307:9: note: in expansion of macro ‘__underlying_strncpy’
> 307 | return __underlying_strncpy(p, q, size);
> | ^~~~~~~~~~~~~~~~~~~~
>
> Cc: Rodolfo Giometti <giometti@linux.it>
> Cc: "Eurotech S.p.A" <info@eurotech.it>
> Signed-off-by: Lee Jones <lee.jones@linaro.org>
> ---
> drivers/misc/c2port/core.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/misc/c2port/core.c b/drivers/misc/c2port/core.c
> index 33bba18022892..80d87e8a0bea9 100644
> --- a/drivers/misc/c2port/core.c
> +++ b/drivers/misc/c2port/core.c
> @@ -923,7 +923,7 @@ struct c2port_device *c2port_device_register(char *name,
> }
> dev_set_drvdata(c2dev->dev, c2dev);
>
> - strncpy(c2dev->name, name, C2PORT_NAME_LEN);
> + strncpy(c2dev->name, name, C2PORT_NAME_LEN - 1);
> c2dev->ops = ops;
> mutex_init(&c2dev->mutex);
>
Acked-by: Rodolfo Giometti <giometti@enneenne.com>
Note that giometti@linux.it is just an alias. My main e-mail address is
giometti@enneenne.com
Rodolfo Giometti
--
GNU/Linux Solutions e-mail: giometti@enneenne.com
Linux Device Driver giometti@linux.it
Embedded Systems phone: +39 349 2432127
UNIX programming skype: rodolfo.giometti
next prev parent reply other threads:[~2020-06-26 13:23 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-26 13:05 [PATCH 00/10] Fix a bunch of W=1 warnings in Misc Lee Jones
2020-06-26 13:05 ` [PATCH 01/10] misc: c2port: core: Ensure source size does not equal destination size in strncpy() Lee Jones
2020-06-26 13:15 ` Rodolfo Giometti [this message]
2020-07-13 19:10 ` Geert Uytterhoeven
2020-07-14 7:46 ` Lee Jones
2020-07-14 7:52 ` Geert Uytterhoeven
2020-07-14 8:01 ` Lee Jones
2020-07-14 8:02 ` Geert Uytterhoeven
2020-06-26 13:05 ` [PATCH 02/10] misc: ti-st: st_core: Tidy-up bespoke commentry Lee Jones
2020-06-26 14:05 ` Arnd Bergmann
2020-06-26 13:05 ` [PATCH 03/10] misc: ti-st: st_kim: " Lee Jones
2020-06-26 14:06 ` Arnd Bergmann
2020-06-26 13:05 ` [PATCH 04/10] misc: lkdtm: bugs: At least try to use popuated variable Lee Jones
2020-06-26 14:37 ` Arnd Bergmann
2020-06-26 15:26 ` Kees Cook
2020-06-26 13:05 ` [PATCH 05/10] misc: lkdtm: Always provide prototype for lkdtm_DOUBLE_FAULT() Lee Jones
2020-06-26 14:37 ` Arnd Bergmann
2020-06-26 15:23 ` Kees Cook
2020-06-26 13:05 ` [PATCH 06/10] misc: eeprom: eeprom_93cx6: Repair function arg descriptions Lee Jones
2020-06-26 14:38 ` Arnd Bergmann
2020-06-27 20:33 ` Wolfram Sang
2020-06-29 8:14 ` Lee Jones
2020-06-29 8:20 ` Wolfram Sang
2020-06-29 8:46 ` Lee Jones
2020-06-26 13:05 ` [PATCH 07/10] misc: mic: vop: vop_main: Remove set but unused variable 'ret' Lee Jones
2020-06-26 14:39 ` Arnd Bergmann
2020-06-26 15:29 ` Lee Jones
2020-06-26 18:38 ` Arnd Bergmann
2020-06-26 13:05 ` [PATCH 08/10] misc: cb710: sgbuf2: Add missing documentation for cb710_sg_dwiter_write_next_block()'s 'data' arg Lee Jones
2020-06-26 14:39 ` Arnd Bergmann
2020-06-26 16:46 ` Michał Mirosław
2020-06-26 13:05 ` [PATCH 09/10] misc: habanalabs: irq: Add missing struct identifier for 'struct hl_eqe_work' Lee Jones
2020-06-26 13:45 ` Oded Gabbay
2020-06-26 13:46 ` Oded Gabbay
2020-06-26 13:05 ` [PATCH 10/10] misc: pti: Fix documentation for bit-rotted function pti_tty_driver_write() Lee Jones
2020-06-26 14:40 ` Arnd Bergmann
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