From: Ben Gras <ben@minix3.org>
Date: Fri, 25 Sep 2009 17:44:26 +0000 (+0000)
Subject: also don't let user process change ss segment selector when returning from
X-Git-Tag: v3.1.5~85
X-Git-Url: http://zhaoyanbai.com/repos/?a=commitdiff_plain;h=e64e75dbc58086d7ab16699a4dbeca58f9abed65;p=minix.git

also don't let user process change ss segment selector when returning from
signal.
---

diff --git a/kernel/system/do_sigreturn.c b/kernel/system/do_sigreturn.c
index 6e286675f..c382e0389 100644
--- a/kernel/system/do_sigreturn.c
+++ b/kernel/system/do_sigreturn.c
@@ -46,6 +46,7 @@ message *m_ptr;			/* pointer to request message */
   sc.sc_cs = rp->p_reg.cs;
   sc.sc_ds = rp->p_reg.ds;
   sc.sc_es = rp->p_reg.es;
+  sc.sc_ss = rp->p_reg.ss;
 #if _WORD_SIZE == 4
   sc.sc_fs = rp->p_reg.fs;
   sc.sc_gs = rp->p_reg.gs;