| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.13 002/109] <linux/uaccess.h>: Fix copy_in_user() declaration | Date | Sun, 24 Sep 2017 22:32:23 +0200 |
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4.13-stable review patch. If anyone has any objections, please let me know.
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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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