From 028fc45832d45c2c32378b18bab92c9109be52cf Mon Sep 17 00:00:00 2001 From: "H. Peter Anvin" Date: Fri, 2 Mar 2012 10:43:49 -0800 Subject: [PATCH] regset: Return -EFAULT, not -EIO, on host-side memory fault commit 5189fa19a4b2b4c3bec37c3a019d446148827717 upstream. There is only one error code to return for a bad user-space buffer pointer passed to a system call in the same address space as the system call is executed, and that is EFAULT. Furthermore, the low-level access routines, which catch most of the faults, return EFAULT already. Signed-off-by: H. Peter Anvin Reviewed-by: Oleg Nesterov Acked-by: Roland McGrath Signed-off-by: Linus Torvalds Signed-off-by: Greg Kroah-Hartman --- include/linux/regset.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/include/linux/regset.h b/include/linux/regset.h index 5150fd1..686f373 100644 --- a/include/linux/regset.h +++ b/include/linux/regset.h @@ -339,7 +339,7 @@ static inline int copy_regset_to_user(struct task_struct *target, return -EOPNOTSUPP; if (!access_ok(VERIFY_WRITE, data, size)) - return -EIO; + return -EFAULT; return regset->get(target, regset, offset, size, NULL, data); } @@ -365,7 +365,7 @@ static inline int copy_regset_from_user(struct task_struct *target, return -EOPNOTSUPP; if (!access_ok(VERIFY_READ, data, size)) - return -EIO; + return -EFAULT; return regset->set(target, regset, offset, size, NULL, data); } -- 2.7.4