DivestOS/Patches/Linux_CVEs/CVE-2015-8839/ANY/0002.patch
2017-11-07 17:32:46 -05:00

38 lines
1.1 KiB
Diff

From f0ac071fc6660c1d8d4b0d0dbe7642dd1274e4a5 Mon Sep 17 00:00:00 2001
From: Nick Desaulniers <ndesaulniers@google.com>
Date: Mon, 18 Jul 2016 12:45:17 -0700
Subject: [PATCH] fs: ext4: disable support for fallocate FALLOC_FL_PUNCH_HOLE
Bug: 28760453
Change-Id: I019c2de559db9e4b95860ab852211b456d78c4ca
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
---
fs/ext4/inode.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 589d6d3134e01..bf37388aa01b7 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -3503,6 +3503,7 @@ int ext4_can_truncate(struct inode *inode)
int ext4_punch_hole(struct inode *inode, loff_t offset, loff_t length)
{
+#if 0
struct super_block *sb = inode->i_sb;
ext4_lblk_t first_block, stop_block;
struct address_space *mapping = inode->i_mapping;
@@ -3626,6 +3627,12 @@ int ext4_punch_hole(struct inode *inode, loff_t offset, loff_t length)
out_mutex:
mutex_unlock(&inode->i_mutex);
return ret;
+#else
+ /*
+ * Disabled as per b/28760453
+ */
+ return -EOPNOTSUPP;
+#endif
}
int ext4_inode_attach_jinode(struct inode *inode)