From: Oleg Drokin <green@linuxhacker.ru>
Date: Sun, 3 Jan 2016 17:05:56 +0000 (-0500)
Subject: staging/lustre: Properly cast ll_fid2path argument to __user in ll_file_ioctl
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=61dad0ba9abbe97b80b2199c126e56b1598545eb;p=deliverable%2Flinux.git

staging/lustre: Properly cast ll_fid2path argument to __user in ll_file_ioctl

When calling ll_fid2path, it expects a userspace pointer.

Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/staging/lustre/lustre/llite/file.c b/drivers/staging/lustre/lustre/llite/file.c
index f31f75a446ec..132d19b62147 100644
--- a/drivers/staging/lustre/lustre/llite/file.c
+++ b/drivers/staging/lustre/lustre/llite/file.c
@@ -2296,7 +2296,7 @@ ll_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 		return 0;
 	}
 	case OBD_IOC_FID2PATH:
-		return ll_fid2path(inode, (void *)arg);
+		return ll_fid2path(inode, (void __user *)arg);
 	case LL_IOC_DATA_VERSION: {
 		struct ioc_data_version	idv;
 		int			rc;