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authorInsu Yun <wuninsu@gmail.com>2016-02-12 01:15:59 -0500
committerTheodore Ts'o <tytso@mit.edu>2016-02-12 01:15:59 -0500
commit46901760b46064964b41015d00c140c83aa05bcf (patch)
treeb4d82f27e6063a825c1f98fdb6a2f3c11d07d1be /fs/ext4
parent802cf1f9f504e09f7118c9acc69ab3e825449e52 (diff)
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ext4: fix potential integer overflow
Since sizeof(ext_new_group_data) > sizeof(ext_new_flex_group_data), integer overflow could be happened. Therefore, need to fix integer overflow sanitization. Cc: stable@vger.kernel.org Signed-off-by: Insu Yun <wuninsu@gmail.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/ext4')
-rw-r--r--fs/ext4/resize.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c
index ad62d7acc315..34038e3598d5 100644
--- a/fs/ext4/resize.c
+++ b/fs/ext4/resize.c
@@ -198,7 +198,7 @@ static struct ext4_new_flex_group_data *alloc_flex_gd(unsigned long flexbg_size)
if (flex_gd == NULL)
goto out3;
- if (flexbg_size >= UINT_MAX / sizeof(struct ext4_new_flex_group_data))
+ if (flexbg_size >= UINT_MAX / sizeof(struct ext4_new_group_data))
goto out2;
flex_gd->count = flexbg_size;