From f67666ea24b99a08138b22057c0eca056bd13666 Mon Sep 17 00:00:00 2001
From: Oleg Nesterov <oleg@redhat.com>
Date: Tue, 29 May 2012 21:29:28 +0200
Subject: [PATCH] --- yaml --- r: 312212 b: refs/heads/master c:
 77fc4af1b59d12ab3b1467adf0a5204806853123 h: refs/heads/master v: v3

---
 [refs]                        | 2 +-
 trunk/kernel/events/uprobes.c | 8 ++++----
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/[refs] b/[refs]
index 508c26393722..f54442db9413 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: d790d34653ab20c74034902f5f0889bba807949a
+refs/heads/master: 77fc4af1b59d12ab3b1467adf0a5204806853123
diff --git a/trunk/kernel/events/uprobes.c b/trunk/kernel/events/uprobes.c
index ee3df704e78a..a2ed82b4808c 100644
--- a/trunk/kernel/events/uprobes.c
+++ b/trunk/kernel/events/uprobes.c
@@ -853,12 +853,12 @@ static int register_for_each_vma(struct uprobe *uprobe, bool is_register)
 		}
 
 		mm = vi->mm;
-		down_read(&mm->mmap_sem);
+		down_write(&mm->mmap_sem);
 		vma = find_vma(mm, (unsigned long)vi->vaddr);
 		if (!vma || !valid_vma(vma, is_register)) {
 			list_del(&vi->probe_list);
 			kfree(vi);
-			up_read(&mm->mmap_sem);
+			up_write(&mm->mmap_sem);
 			mmput(mm);
 			continue;
 		}
@@ -867,7 +867,7 @@ static int register_for_each_vma(struct uprobe *uprobe, bool is_register)
 						vaddr != vi->vaddr) {
 			list_del(&vi->probe_list);
 			kfree(vi);
-			up_read(&mm->mmap_sem);
+			up_write(&mm->mmap_sem);
 			mmput(mm);
 			continue;
 		}
@@ -877,7 +877,7 @@ static int register_for_each_vma(struct uprobe *uprobe, bool is_register)
 		else
 			remove_breakpoint(uprobe, mm, vi->vaddr);
 
-		up_read(&mm->mmap_sem);
+		up_write(&mm->mmap_sem);
 		mmput(mm);
 		if (is_register) {
 			if (ret && ret == -EEXIST)