This is a note to let you know that I've just added the patch titled riscv: uaccess: fix type of 0 variable on error in get_user() to the 6.1-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: riscv-uaccess-fix-type-of-0-variable-on-error-in-get_user.patch and it can be found in the queue-6.1 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From b9b916aee6715cd7f3318af6dc360c4729417b94 Mon Sep 17 00:00:00 2001 From: Ben Dooks <ben-linux@xxxxxxxxx> Date: Thu, 29 Dec 2022 17:05:45 +0000 Subject: riscv: uaccess: fix type of 0 variable on error in get_user() From: Ben Dooks <ben-linux@xxxxxxxxx> commit b9b916aee6715cd7f3318af6dc360c4729417b94 upstream. If the get_user(x, ptr) has x as a pointer, then the setting of (x) = 0 is going to produce the following sparse warning, so fix this by forcing the type of 'x' when access_ok() fails. fs/aio.c:2073:21: warning: Using plain integer as NULL pointer Signed-off-by: Ben Dooks <ben-linux@xxxxxxxxx> Reviewed-by: Palmer Dabbelt <palmer@xxxxxxxxxxxx> Link: https://lore.kernel.org/r/20221229170545.718264-1-ben-linux@xxxxxxxxx Cc: stable@xxxxxxxxxxxxxxx Signed-off-by: Palmer Dabbelt <palmer@xxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- arch/riscv/include/asm/uaccess.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/arch/riscv/include/asm/uaccess.h +++ b/arch/riscv/include/asm/uaccess.h @@ -165,7 +165,7 @@ do { \ might_fault(); \ access_ok(__p, sizeof(*__p)) ? \ __get_user((x), __p) : \ - ((x) = 0, -EFAULT); \ + ((x) = (__force __typeof__(x))0, -EFAULT); \ }) #define __put_user_asm(insn, x, ptr, err) \ Patches currently in stable-queue which might be from ben-linux@xxxxxxxxx are queue-6.1/riscv-uaccess-fix-type-of-0-variable-on-error-in-get_user.patch