2 files changed, 17 insertions, 0 deletions

diff --git a/kernel/kgdb.c b/kernel/kgdb.c
index 68aea78407e4..31425e0fbf20 100644
--- a/kernel/kgdb.c
+++ b/kernel/kgdb.c
@@ -200,6 +200,17 @@ int __weak kgdb_arch_init(void)
         return 0;
 }
 
+int __weak kgdb_skipexception(int exception, struct pt_regs *regs)
+{
+        return 0;
+}
+
+void __weak
+kgdb_post_primary_code(struct pt_regs *regs, int e_vector, int err_code)
+{
+        return;
+}
+
 /**
  *      kgdb_disable_hw_debug - Disable hardware debugging while we in kgdb.
  *      @regs: Current &struct pt_regs.
diff --git a/mm/maccess.c b/mm/maccess.c
index 24f81b971403..ac40796cfb15 100644
--- a/mm/maccess.c
+++ b/mm/maccess.c
@@ -17,11 +17,14 @@
 long probe_kernel_read(void *dst, void *src, size_t size)
 {
         long ret;
+        mm_segment_t old_fs = get_fs();
 
+        set_fs(KERNEL_DS);
         pagefault_disable();
         ret = __copy_from_user_inatomic(dst,
                         (__force const void __user *)src, size);
         pagefault_enable();
+        set_fs(old_fs);
 
         return ret ? -EFAULT : 0;
 }
@@ -39,10 +42,13 @@ EXPORT_SYMBOL_GPL(probe_kernel_read);
 long probe_kernel_write(void *dst, void *src, size_t size)
 {
         long ret;
+        mm_segment_t old_fs = get_fs();
 
+        set_fs(KERNEL_DS);
         pagefault_disable();
         ret = __copy_to_user_inatomic((__force void __user *)dst, src, size);
         pagefault_enable();
+        set_fs(old_fs);
 
         return ret ? -EFAULT : 0;
 }