From 43b00fdbb13bfc1b2f4a8e5b65315db6d9c479a3 Mon Sep 17 00:00:00 2001
From: Jeff Dike <jdike@addtoit.com>
Date: Tue, 7 Feb 2006 12:58:42 -0800
Subject: [PATCH] [PATCH] uml: block SIGWINCH in ptrace tester child
The process that UML uses to probe the host's ptrace capabilities can (rarely)
receive a SIGWINCH, confusing the parent. This fixes that by blocking
SIGWINCH.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
arch/um/os-Linux/start_up.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/um/os-Linux/start_up.c b/arch/um/os-Linux/start_up.c
index 6c5b17ed59e1..829d6b0d8b02 100644
--- a/arch/um/os-Linux/start_up.c
+++ b/arch/um/os-Linux/start_up.c
@@ -49,6 +49,7 @@ static int ptrace_child(void *arg)
int pid = os_getpid(), ppid = getppid();
int sc_result;
+ change_sig(SIGWINCH, 0);
if(ptrace(PTRACE_TRACEME, 0, 0, 0) < 0){
perror("ptrace");
os_kill_process(pid, 0);