From: Andi Kleen <ak@suse.de>
Date: Tue, 11 Apr 2006 10:54:39 +0000 (+0200)
Subject: [PATCH] x86_64: Remove check for canonical RIP
X-Git-Tag: v2.6.17-rc2~105
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=97a4d00388db4f0bfa37425b31d7d9751ea649db;p=linux-2.6

[PATCH] x86_64: Remove check for canonical RIP

As pointed out by Linus it is useless now because entry.S should
handle it correctly in all cases.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/arch/x86_64/kernel/ptrace.c b/arch/x86_64/kernel/ptrace.c
index d44b2c1e63..da8e7903d8 100644
--- a/arch/x86_64/kernel/ptrace.c
+++ b/arch/x86_64/kernel/ptrace.c
@@ -274,11 +274,6 @@ static int putreg(struct task_struct *child,
 				return -EIO;
 			value &= 0xffff;
 			break;
-		case offsetof(struct user_regs_struct, rip):
-			/* Check if the new RIP address is canonical */
-			if (value >= TASK_SIZE_OF(child))
-				return -EIO;
-			break;
 	}
 	put_stack_long(child, regno - sizeof(struct pt_regs), value);
 	return 0;