diff options
| author | Marco Elver <elver@google.com> | 2020-01-21 19:05:12 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2020-03-21 11:41:59 +0300 |
| commit | 76d6f06c36a3b5cc402eeeb709613cb211fdaa8f (patch) | |
| tree | 2149fc9058bd079c85c6f64503579135d86e537b /lib/usercopy.c | |
| parent | d0ef4c360f7ea33905539b9b36fa2273915703f0 (diff) | |
| download | linux-76d6f06c36a3b5cc402eeeb709613cb211fdaa8f.tar.xz | |
copy_to_user, copy_from_user: Use generic instrumented.h
This replaces the KASAN instrumentation with generic instrumentation,
implicitly adding KCSAN instrumentation support.
For KASAN no functional change is intended.
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Marco Elver <elver@google.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'lib/usercopy.c')
| -rw-r--r-- | lib/usercopy.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/lib/usercopy.c b/lib/usercopy.c index cbb4d9ec00f2..4bb1c5e7a3eb 100644 --- a/lib/usercopy.c +++ b/lib/usercopy.c @@ -1,6 +1,7 @@ // SPDX-License-Identifier: GPL-2.0 -#include <linux/uaccess.h> #include <linux/bitops.h> +#include <linux/instrumented.h> +#include <linux/uaccess.h> /* out-of-line parts */ @@ -10,7 +11,7 @@ unsigned long _copy_from_user(void *to, const void __user *from, unsigned long n unsigned long res = n; might_fault(); if (likely(access_ok(from, n))) { - kasan_check_write(to, n); + instrument_copy_from_user(to, from, n); res = raw_copy_from_user(to, from, n); } if (unlikely(res)) @@ -25,7 +26,7 @@ unsigned long _copy_to_user(void __user *to, const void *from, unsigned long n) { might_fault(); if (likely(access_ok(to, n))) { - kasan_check_read(from, n); + instrument_copy_to_user(to, from, n); n = raw_copy_to_user(to, from, n); } return n; |