From: Nicholas Nethercote <n.nethercote@gmail.com>
Date: Thu, 28 Oct 2004 16:53:51 +0000 (+0000)
Subject: Fix off-by-one error with VKI_GDT_TLS_MAX.
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=dae1e8cd27ecf42459a84a3b43c4fa9b788ab927;p=thirdparty%2Fvalgrind.git

Fix off-by-one error with VKI_GDT_TLS_MAX.


git-svn-id: svn://svn.valgrind.org/valgrind/branches/VALGRIND_2_2_0_BRANCH@2872
---

diff --git a/coregrind/vg_ldt.c b/coregrind/vg_ldt.c
index ba9b245bfe..a22a8e026a 100644
--- a/coregrind/vg_ldt.c
+++ b/coregrind/vg_ldt.c
@@ -196,7 +196,7 @@ Addr VG_(do_useseg) ( UInt seg_selector, Addr virtual_addr )
    if (table == 0) {
       VgLdtEntry* the_tls;
 
-      vg_assert(seg_selector >= VKI_GDT_TLS_MIN && seg_selector < VKI_GDT_TLS_MAX);
+      vg_assert(seg_selector >= VKI_GDT_TLS_MIN && seg_selector <= VKI_GDT_TLS_MAX);
 
       /* Come up with a suitable GDT entry.  We look at the thread's TLS
 	 array, which is pointed to by a VG_(baseBlock) entry. */
diff --git a/include/vg_kerneliface.h b/include/vg_kerneliface.h
index 7dc4825302..04e42c09d3 100644
--- a/include/vg_kerneliface.h
+++ b/include/vg_kerneliface.h
@@ -665,7 +665,7 @@ typedef struct vki_modify_ldt_ldt_s {
 
 #define VKI_GDT_TLS_ENTRIES 3
 #define VKI_GDT_TLS_MIN     6
-#define VKI_GDT_TLS_MAX     (VKI_GDT_TLS_MIN + VKI_GDT_TLS_ENTRIES)
+#define VKI_GDT_TLS_MAX     (VKI_GDT_TLS_MIN + VKI_GDT_TLS_ENTRIES - 1)
 
 /* Flags for clone() */
 /* linux/sched.h */