From 7674006eed0a3c4de34fac89fc3592520c728637 Mon Sep 17 00:00:00 2001
From: "Dmitry V. Levin" <ldv@altlinux.org>
Date: Fri, 18 Sep 2009 11:30:14 +0000
Subject: [PATCH] Fix follow fork/vfork on Linux ARM OABI

__NR_SYSCALL_BASE eis 0 for EABI and is 0x900000 for OABI.
* process (change_syscall) [LINUX && ARM]: Mask off the high order bits
when changing syscall.

Signed-off-by: Steve Bennett <steveb@workware.net.au>
Reviewed-by: Kirill A. Shutemov <kirill@shutemov.name>
---
 process.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/process.c b/process.c
index 23bd4132..5d956b03 100644
--- a/process.c
+++ b/process.c
@@ -792,7 +792,7 @@ change_syscall(struct tcb *tcp, int new)
 #  define PTRACE_SET_SYSCALL 23
 # endif
 
-	if (ptrace (PTRACE_SET_SYSCALL, tcp->pid, 0, new) != 0)
+	if (ptrace (PTRACE_SET_SYSCALL, tcp->pid, 0, new & 0xffff) != 0)
 		return -1;
 
 	return 0;