From c6519c6df0722e432f330afbc7c00d16d5be5c58 Mon Sep 17 00:00:00 2001 From: Benjamin Gray Date: Wed, 11 Oct 2023 16:37:08 +1100 Subject: powerpc/uaccess: Cast away __user annotation after verification Sparse reports dereference of a __user pointer. copy_mc_to_user() takes a __user pointer, verifies it, then calls the generic copy routine copy_mc_generic(). As we have verified the pointer, cast out the __user annotation when passing to copy_mc_generic(). Signed-off-by: Benjamin Gray Signed-off-by: Michael Ellerman Link: https://msgid.link/20231011053711.93427-10-bgray@linux.ibm.com --- arch/powerpc/include/asm/uaccess.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/powerpc/include/asm/uaccess.h') diff --git a/arch/powerpc/include/asm/uaccess.h b/arch/powerpc/include/asm/uaccess.h index fb725ec77926..f1f9890f50d3 100644 --- a/arch/powerpc/include/asm/uaccess.h +++ b/arch/powerpc/include/asm/uaccess.h @@ -374,7 +374,7 @@ copy_mc_to_user(void __user *to, const void *from, unsigned long n) if (check_copy_size(from, n, true)) { if (access_ok(to, n)) { allow_write_to_user(to, n); - n = copy_mc_generic((void *)to, from, n); + n = copy_mc_generic((void __force *)to, from, n); prevent_write_to_user(to, n); } } -- cgit