diff --git a/[refs] b/[refs]
index 6a6a23fb8139..5d53f9795047 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 49316cbf0a9875f102f98dc8b7c80cfa142e33cf
+refs/heads/master: a887b4dada2f23b2ff2aa725e0509c92dc652597
diff --git a/trunk/arch/mips/mm/fault.c b/trunk/arch/mips/mm/fault.c
index 6751ce9ede9e..f956ecbb8136 100644
--- a/trunk/arch/mips/mm/fault.c
+++ b/trunk/arch/mips/mm/fault.c
@@ -171,6 +171,7 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long write,
 	 * We ran out of memory, call the OOM killer, and return the userspace
 	 * (which will retry the fault, or kill us if we got oom-killed).
 	 */
+	up_read(&mm->mmap_sem);
 	pagefault_out_of_memory();
 	return;