From: Ben Dooks <ben.dooks@codethink.co.uk>
Date: Tue, 15 Oct 2019 10:50:49 +0000 (+0100)
Subject: fs/fnctl: fix missing __user in fcntl_rw_hint()
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=e200327708e691e53b99e4da38e53c0457fba6c1;p=openwrt%2Fstaging%2Fblogic.git

fs/fnctl: fix missing __user in fcntl_rw_hint()

The fcntl_rw_hint() has a missing __user annotation in
the code when assinging argp. Add this to fix the
following sparse warnings:

fs/fcntl.c:280:22: warning: incorrect type in initializer (different address spaces)
fs/fcntl.c:280:22:    expected unsigned long long [usertype] *argp
fs/fcntl.c:280:22:    got unsigned long long [noderef] [usertype] <asn:1> *
fs/fcntl.c:287:34: warning: incorrect type in argument 1 (different address spaces)
fs/fcntl.c:287:34:    expected void [noderef] <asn:1> *to
fs/fcntl.c:287:34:    got unsigned long long [usertype] *argp
fs/fcntl.c:291:40: warning: incorrect type in argument 2 (different address spaces)
fs/fcntl.c:291:40:    expected void const [noderef] <asn:1> *from
fs/fcntl.c:291:40:    got unsigned long long [usertype] *argp
fs/fcntl.c:303:34: warning: incorrect type in argument 1 (different address spaces)
fs/fcntl.c:303:34:    expected void [noderef] <asn:1> *to
fs/fcntl.c:303:34:    got unsigned long long [usertype] *argp
fs/fcntl.c:307:40: warning: incorrect type in argument 2 (different address spaces)
fs/fcntl.c:307:40:    expected void const [noderef] <asn:1> *from
fs/fcntl.c:307:40:    got unsigned long long [usertype] *argp

Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---

diff --git a/fs/fcntl.c b/fs/fcntl.c
index 3d40771e8e7c..7ca7562f2b79 100644
--- a/fs/fcntl.c
+++ b/fs/fcntl.c
@@ -277,7 +277,7 @@ static long fcntl_rw_hint(struct file *file, unsigned int cmd,
 			  unsigned long arg)
 {
 	struct inode *inode = file_inode(file);
-	u64 *argp = (u64 __user *)arg;
+	u64 __user *argp = (u64 __user *)arg;
 	enum rw_hint hint;
 	u64 h;