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-rw-r--r--include/linux/uaccess.h4
-rw-r--r--mm/maccess.c11
2 files changed, 12 insertions, 3 deletions
diff --git a/include/linux/uaccess.h b/include/linux/uaccess.h
index 6b58367d145..d512d98dfb7 100644
--- a/include/linux/uaccess.h
+++ b/include/linux/uaccess.h
@@ -94,6 +94,7 @@ static inline unsigned long __copy_from_user_nocache(void *to,
* happens, handle that and return -EFAULT.
*/
extern long probe_kernel_read(void *dst, void *src, size_t size);
+extern long __probe_kernel_read(void *dst, void *src, size_t size);
/*
* probe_kernel_write(): safely attempt to write to a location
@@ -104,6 +105,7 @@ extern long probe_kernel_read(void *dst, void *src, size_t size);
* Safely write to address @dst from the buffer at @src. If a kernel fault
* happens, handle that and return -EFAULT.
*/
-extern long probe_kernel_write(void *dst, void *src, size_t size);
+extern long notrace probe_kernel_write(void *dst, void *src, size_t size);
+extern long notrace __probe_kernel_write(void *dst, void *src, size_t size);
#endif /* __LINUX_UACCESS_H__ */
diff --git a/mm/maccess.c b/mm/maccess.c
index 9073695ff25..4e348dbaecd 100644
--- a/mm/maccess.c
+++ b/mm/maccess.c
@@ -14,7 +14,11 @@
* Safely read from address @src to the buffer at @dst. If a kernel fault
* happens, handle that and return -EFAULT.
*/
-long probe_kernel_read(void *dst, void *src, size_t size)
+
+long __weak probe_kernel_read(void *dst, void *src, size_t size)
+ __attribute__((alias("__probe_kernel_read")));
+
+long __probe_kernel_read(void *dst, void *src, size_t size)
{
long ret;
mm_segment_t old_fs = get_fs();
@@ -39,7 +43,10 @@ EXPORT_SYMBOL_GPL(probe_kernel_read);
* Safely write to address @dst from the buffer at @src. If a kernel fault
* happens, handle that and return -EFAULT.
*/
-long notrace __weak probe_kernel_write(void *dst, void *src, size_t size)
+long __weak probe_kernel_write(void *dst, void *src, size_t size)
+ __attribute__((alias("__probe_kernel_write")));
+
+long __probe_kernel_write(void *dst, void *src, size_t size)
{
long ret;
mm_segment_t old_fs = get_fs();