Le 15/06/2021 à 08:52, Christoph Hellwig a écrit :
On Tue, Jun 15, 2021 at 06:41:01AM +0000, Christophe Leroy wrote:
+ unsafe_copy_to_user(__ucs_to, __ucs_from, \
+ sizeof(struct kernel_siginfo), label); \
+ unsafe_clear_user(__ucs_expansion, SI_EXPANSION_SIZE, label); \
+} while (0)
unsafe_clear_user does not exist at this point, and even your later
patch only adds it for powerpc.
You missed below chunck I guess:
> diff --git a/include/linux/uaccess.h b/include/linux/uaccess.h
> index c05e903cef02..37073caac474 100644
> --- a/include/linux/uaccess.h
> +++ b/include/linux/uaccess.h
> @@ -398,6 +398,7 @@ long strnlen_user_nofault(const void __user *unsafe_addr, long count);
> #define unsafe_put_user(x,p,e) unsafe_op_wrap(__put_user(x,p),e)
> #define unsafe_copy_to_user(d,s,l,e) unsafe_op_wrap(__copy_to_user(d,s,l),e)
> #define unsafe_copy_from_user(d,s,l,e) unsafe_op_wrap(__copy_from_user(d,s,l),e)
> +#define unsafe_clear_user(d, l, e) unsafe_op_wrap(__clear_user(d, l), e)
> static inline unsigned long user_access_save(void) { return 0UL; }
> static inline void user_access_restore(unsigned long flags) { }
> #endif
