From 09cb22d2a57b51d7d052dfe508f260abc67b69b6 Mon Sep 17 00:00:00 2001
From: Andreas Gruenbacher <agruenba@redhat.com>
Date: Tue, 3 Nov 2015 12:53:54 +1100
Subject: [PATCH] xfs: Plug memory leak in xfs_attrmulti_attr_set
When setting attributes via XFS_IOC_ATTRMULTI_BY_HANDLE, the user-space
buffer is copied into a new kernel-space buffer via memdup_user; that
buffer then isn't freed.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
---
fs/xfs/xfs_ioctl.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c
index ea7d85af53101..e939c20cb4dee 100644
--- a/fs/xfs/xfs_ioctl.c
+++ b/fs/xfs/xfs_ioctl.c
@@ -482,6 +482,7 @@ xfs_attrmulti_attr_set(
__uint32_t flags)
{
unsigned char *kbuf;
+ int error;
if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
return -EPERM;
@@ -492,7 +493,9 @@ xfs_attrmulti_attr_set(
if (IS_ERR(kbuf))
return PTR_ERR(kbuf);
- return xfs_attr_set(XFS_I(inode), name, kbuf, len, flags);
+ error = xfs_attr_set(XFS_I(inode), name, kbuf, len, flags);
+ kfree(kbuf);
+ return error;
}
int
--
2.30.2