From: Helge Deller <deller@gmx.de>
Date: Tue, 11 Oct 2016 18:40:02 +0000 (+0200)
Subject: parisc: Zero-initialize newly alloced memblock
X-Git-Tag: v4.9-rc1~39^2~1
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=e3b6a02816ebbda3acfde2f079446ba92c97e70b;p=platform%2Fkernel%2Flinux-exynos.git

parisc: Zero-initialize newly alloced memblock

Commit 4fe9e1d957e4 ("parisc: Drop bootmem and switch to memblock")
switched to the memblock allocator, but missed to zero-initialize the
newly allocated memblocks. This lead to crashes on some machines like
the rp3410.

Fixes: 4fe9e1d957e4 ("parisc: Drop bootmem and switch to memblock")
Signed-off-by: Helge Deller <deller@gmx.de>
---

diff --git a/arch/parisc/mm/init.c b/arch/parisc/mm/init.c
index 356f384..e02ada3 100644
--- a/arch/parisc/mm/init.c
+++ b/arch/parisc/mm/init.c
@@ -105,6 +105,8 @@ static void * __init get_memblock(unsigned long size)
 	else
 		panic("get_memblock() failed.\n");
 
+	memset(__va(phys), 0, size);
+
 	return __va(phys);
 }