Re: [PATCH v3 3/9] hexagon: use generic strncpy/strnlen from_user

2021-07-22 Thread Christoph Hellwig
On Thu, Jul 22, 2021 at 02:48:08PM +0200, Arnd Bergmann wrote: > From: Arnd Bergmann > > Remove the hexagon implementation of strncpy/strnlen and instead use > the generic version. The hexagon version reads the data twice for > strncpy() by doing an extra strnlen(), and it apparently lacks a

[PATCH v3 3/9] hexagon: use generic strncpy/strnlen from_user

2021-07-22 Thread Arnd Bergmann
From: Arnd Bergmann Remove the hexagon implementation of strncpy/strnlen and instead use the generic version. The hexagon version reads the data twice for strncpy() by doing an extra strnlen(), and it apparently lacks a check for user_addr_max(). Signed-off-by: Arnd Bergmann ---