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authorThomas Gleixner <tglx@linutronix.de>2020-06-11 20:02:46 +0200
committerThomas Gleixner <tglx@linutronix.de>2020-06-11 20:02:46 +0200
commit37d1a04b13a6d2fec91a6813fc034947a27db034 (patch)
treec6a8d7d0df96a6eb1ddb53a12885761cb72e0e92 /lib/usercopy.c
parent37f8173dd84936ea78000ed1cad24f8b18d48ebb (diff)
parent97a9474aeb789183a1d0712e66a4283860279ac9 (diff)
Rebase locking/kcsan to locking/urgent
Merge the state of the locking kcsan branch before the read/write_once() and the atomics modifications got merged. Squash the fallout of the rebase on top of the read/write once and atomic fallback work into the merge. The history of the original branch is preserved in tag locking-kcsan-2020-06-02. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'lib/usercopy.c')
-rw-r--r--lib/usercopy.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/lib/usercopy.c b/lib/usercopy.c
index ca2a697a2061..b26509f112f9 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;