From 2709abc88376efe80d7d5ef6d9d4e740d5c9afcb Mon Sep 17 00:00:00 2001
From: Konstantin Belousov <kostik@pooma.home>
Date: Wed, 21 Apr 2010 15:33:37 +0300
Subject: [PATCH] msync() also may be called on unaligned address.

---
 src/x86/Ginit.c    | 4 ++--
 src/x86_64/Ginit.c | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/x86/Ginit.c b/src/x86/Ginit.c
index 4ed88bbd..0af616a5 100644
--- a/src/x86/Ginit.c
+++ b/src/x86/Ginit.c
@@ -103,9 +103,9 @@ validate_mem (unw_word_t addr)
     }
 
 #ifdef HAVE_MINCORE
-  if (mincore ((void *) addr, 1, mvec) == -1)
+  if (mincore ((void *) addr, sizeof (unw_word_t), mvec) == -1)
 #else
-  if (msync ((void *) addr, 1, MS_ASYNC) == -1)
+  if (msync ((void *) addr, sizeof (unw_word_t), MS_ASYNC) == -1)
 #endif
     return -1;
 
diff --git a/src/x86_64/Ginit.c b/src/x86_64/Ginit.c
index 790f88be..ac5ea66f 100644
--- a/src/x86_64/Ginit.c
+++ b/src/x86_64/Ginit.c
@@ -104,7 +104,7 @@ validate_mem (unw_word_t addr)
 #ifdef HAVE_MINCORE
   if (mincore ((void *) addr, sizeof (unw_word_t), mvec) == -1)
 #else
-  if (msync ((void *) addr, 1, MS_ASYNC) == -1)
+  if (msync ((void *) addr, sizeof (unw_word_t), MS_ASYNC) == -1)
 #endif
     return -1;