1 files changed, 24 insertions, 2 deletions

diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 82e019bf2dc5..2aa47623f5f8 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -582,9 +582,19 @@ static int strrcmp(const char *s, const char *sub)
  *   tosec   = .init.text | .exit.text | .init.data
  *   fromsec = .data
  *   atsym = *driver, *_template, *_sht, *_ops, *_probe, *probe_one
+ *
+ * Pattern 3:
+ *   Some symbols belong to init section but still it is ok to reference
+ *   these from non-init sections as these symbols don't have any memory
+ *   allocated for them and symbol address and value are same. So even
+ *   if init section is freed, its ok to reference those symbols.
+ *   For ex. symbols marking the init section boundaries.
+ *   This pattern is identified by
+ *   refsymname = __init_begin, _sinittext, _einittext
  **/
 static int secref_whitelist(const char *modname, const char *tosec,
-                            const char *fromsec, const char *atsym)
+                            const char *fromsec, const char *atsym,
+                            const char *refsymname)
 {
         int f1 = 1, f2 = 1;
         const char **s;
@@ -599,6 +609,13 @@ static int secref_whitelist(const char *modname, const char *tosec,
                 NULL
         };
 
+        const char *pat3refsym[] = {
+                "__init_begin",
+                "_sinittext",
+                "_einittext",
+                NULL
+        };
+
         /* Check for pattern 1 */
         if (strcmp(tosec, ".init.data") != 0)
                 f1 = 0;
@@ -629,6 +646,11 @@ static int secref_whitelist(const char *modname, const char *tosec,
                 if ((strcmp(fromsec, ".pci_fixup") == 0) &&
                     (strcmp(tosec, ".init.text") == 0))
                 return 1;
+
+                /* Check for pattern 3 */
+                for (s = pat3refsym; *s; s++)
+                        if (strcmp(refsymname, *s) == 0)
+                                return 1;
         }
         return 0;
 }
@@ -738,7 +760,7 @@ static void warn_sec_mismatch(const char *modname, const char *fromsec,
         /* check whitelist - we may ignore it */
         if (before &&
             secref_whitelist(modname, secname, fromsec,
-                             elf->strtab + before->st_name))
+                             elf->strtab + before->st_name, refsymname))
                 return;
 
         if (before && after) {