From: David S. Miller <davem@davemloft.net>
Date: Tue, 8 Apr 2008 05:24:24 +0000 (-0700)
Subject: SPARC64: Fix FPU saving in 64-bit signal handling.
X-Git-Tag: v2.6.24.5~17
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1ff9e6f47768a807d8c283290e5a4f8b66376e46;p=thirdparty%2Fkernel%2Fstable.git

SPARC64: Fix FPU saving in 64-bit signal handling.

Upstream commit: 7c3cce978e4f933ac13758ec5d2554fc8d0927d2

The calculation of the FPU reg save area pointer
was wrong.

Based upon an OOPS report from Tom Callaway.

Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
---

diff --git a/arch/sparc64/kernel/signal.c b/arch/sparc64/kernel/signal.c
index fb13775b36823..48afa08ca1aaa 100644
--- a/arch/sparc64/kernel/signal.c
+++ b/arch/sparc64/kernel/signal.c
@@ -354,7 +354,7 @@ static int invalid_frame_pointer(void __user *fp, int fplen)
 static inline int
 save_fpu_state(struct pt_regs *regs, __siginfo_fpu_t __user *fpu)
 {
-	unsigned long *fpregs = (unsigned long *)(regs+1);
+	unsigned long *fpregs = current_thread_info()->fpregs;
 	unsigned long fprs;
 	int err = 0;