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SubjectRe: [PATCH] uml: Replace all non-returning strlcpy with strscpy
On May 30, 2023 8:18:42 PM PDT, kernel test robot <> wrote:
>Hi Azeem,
>kernel test robot noticed the following build errors:
>[auto build test ERROR on uml/next]
>[also build test ERROR on uml/fixes wireless-next/main wireless/main linus/master v6.4-rc4 next-20230530]
>[If your patch is applied to the wrong git tree, kindly drop us a note.
>And when submitting patch, we suggest to use '--base' as documented in
>base: git:// next
>patch link:
>patch subject: [PATCH] uml: Replace all non-returning strlcpy with strscpy
>config: um-i386_defconfig (
>compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
>reproduce (this is a W=1 build):
> #
> git remote add linux-review
> git fetch --no-tags linux-review Azeem-Shaikh/uml-Replace-all-non-returning-strlcpy-with-strscpy/20230531-004115
> git checkout c51d7beb37cfbda321feb3811bbe0e381f804899
> # save the config file
> mkdir build_dir && cp config build_dir/.config
> make W=1 O=build_dir ARCH=um SUBARCH=i386 olddefconfig
> make W=1 O=build_dir ARCH=um SUBARCH=i386 SHELL=/bin/bash
>If you fix the issue, kindly add following tag where applicable
>| Reported-by: kernel test robot <>
>| Closes:
>All errors (new ones prefixed by >>):
> arch/um/os-Linux/drivers/tuntap_user.c: In function 'tuntap_open':
>>> arch/um/os-Linux/drivers/tuntap_user.c:149:17: error: implicit declaration of function 'strscpy'; did you mean 'strncpy'? [-Werror=implicit-function-declaration]
> 149 | strscpy(ifr.ifr_name, pri->dev_name, sizeof(ifr.ifr_name));
> | ^~~~~~~
> | strncpy
> cc1: some warnings being treated as errors

Ah, yeah, this is another "not actually in the kernel" cases. Let's ignore this strlcpy for now.


Kees Cook

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