From: Al Viro <viro@zeniv.linux.org.uk>
Date: Thu, 6 Sep 2012 03:20:33 +0000 (-0400)
Subject: um: don't leak floating point state and segment registers on execve()
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=344569aef36970f3b08cbd45cd19a941edc8066f;p=openwrt%2Fstaging%2Fblogic.git

um: don't leak floating point state and segment registers on execve()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---

diff --git a/arch/um/kernel/exec.c b/arch/um/kernel/exec.c
index 4cab0c78684b..8c82786da823 100644
--- a/arch/um/kernel/exec.c
+++ b/arch/um/kernel/exec.c
@@ -39,6 +39,7 @@ void flush_thread(void)
 
 void start_thread(struct pt_regs *regs, unsigned long eip, unsigned long esp)
 {
+	get_safe_registers(regs->regs.gp, regs->regs.fp);
 	PT_REGS_IP(regs) = eip;
 	PT_REGS_SP(regs) = esp;
 	current->ptrace &= ~PT_DTRACE;