From: Helge Deller <deller@gmx.de>
Date: Wed, 2 Sep 2015 16:18:48 +0000 (+0200)
Subject: parisc: Additionally check for in_atomic() in page fault handler
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=699817c3df46eb209044d8c9eb20c6ff6c67c81d;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

parisc: Additionally check for in_atomic() in page fault handler

Craig Estey noticed that we didn't checked for in_atomic() in our page fault
handler like other architectures. This commit adds this check by using
faulthandler_disabled() which includes a check for pagefault_disabled() and
in_atomic().

Reported-by: Craig Estey <cae370@gmail.com>
Signed-off-by: Helge Deller <deller@gmx.de>
---

diff --git a/arch/parisc/mm/fault.c b/arch/parisc/mm/fault.c
index 15503adddf4f..a762864ec92e 100644
--- a/arch/parisc/mm/fault.c
+++ b/arch/parisc/mm/fault.c
@@ -207,7 +207,7 @@ void do_page_fault(struct pt_regs *regs, unsigned long code,
 	int fault;
 	unsigned int flags;
 
-	if (pagefault_disabled())
+	if (faulthandler_disabled())
 		goto no_context;
 
 	tsk = current;