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[PATCH 4.13 002/109] <linux/uaccess.h>: Fix copy_in_user() declaration

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  [PATCH 4.13 002/109] <linux/uaccess.h>: Fix copy_in_user() declaration Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-09-24 22:50 +0200

#1738429 — [PATCH 4.13 002/109] <linux/uaccess.h>: Fix copy_in_user() declaration

4.13-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Bart Van Assche <bart.vanassche@wdc.com>

commit f58e76c1c551c7577b25a6fe493d82f5214331b7 upstream.

copy_in_user() copies data from user-space address @from to user-
space address @to. Hence declare both @from and @to as user-space
pointers.

Fixes: commit d597580d3737 ("generic ...copy_..._user primitives")
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 include/linux/uaccess.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/include/linux/uaccess.h
+++ b/include/linux/uaccess.h
@@ -156,7 +156,7 @@ copy_to_user(void __user *to, const void
 }
 #ifdef CONFIG_COMPAT
 static __always_inline unsigned long __must_check
-copy_in_user(void __user *to, const void *from, unsigned long n)
+copy_in_user(void __user *to, const void __user *from, unsigned long n)
 {
 	might_fault();
 	if (access_ok(VERIFY_WRITE, to, n) && access_ok(VERIFY_READ, from, n))

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