From: Michael Neuling <mikey@neuling.org>
Date: Mon, 28 Jul 2008 15:13:14 +0000 (+1000)
Subject: powerpc: Don't use the wrong thread_struct for ptrace get/set VSX regs
X-Git-Tag: v2.6.27-rc2~117^2~1
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7d2a175b9bf6e9422bebe95130a3c79a25ff4602;p=linux-2.6

powerpc: Don't use the wrong thread_struct for ptrace get/set VSX regs

In PTRACE_GET/SETVSRREGS, we should be using the thread we are
ptracing rather than current.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c
index 97d5dede81..3635be61f8 100644
--- a/arch/powerpc/kernel/ptrace.c
+++ b/arch/powerpc/kernel/ptrace.c
@@ -375,7 +375,7 @@ static int vsr_get(struct task_struct *target, const struct user_regset *regset,
 	flush_vsx_to_thread(target);
 
 	for (i = 0; i < 32 ; i++)
-		buf[i] = current->thread.fpr[i][TS_VSRLOWOFFSET];
+		buf[i] = target->thread.fpr[i][TS_VSRLOWOFFSET];
 	ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
 				  buf, 0, 32 * sizeof(double));
 
@@ -394,7 +394,7 @@ static int vsr_set(struct task_struct *target, const struct user_regset *regset,
 	ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
 				 buf, 0, 32 * sizeof(double));
 	for (i = 0; i < 32 ; i++)
-		current->thread.fpr[i][TS_VSRLOWOFFSET] = buf[i];
+		target->thread.fpr[i][TS_VSRLOWOFFSET] = buf[i];
 
 
 	return ret;