1 files changed, 21 insertions, 0 deletions

diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 1c2101bf63d2..91ee1b2e0f9a 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -908,6 +908,9 @@ static const char *const init_sections[] = { ALL_INIT_SECTIONS, NULL };
 static const char *const init_exit_sections[] =
         {ALL_INIT_SECTIONS, ALL_EXIT_SECTIONS, NULL };
 
+/* all text sections */
+static const char *const text_sections[] = { ALL_TEXT_SECTIONS, NULL };
+
 /* data section */
 static const char *const data_sections[] = { DATA_SECTIONS, NULL };
 
@@ -926,6 +929,7 @@ static const char *const data_sections[] = { DATA_SECTIONS, NULL };
 static const char *const head_sections[] = { ".head.text*", NULL };
 static const char *const linker_symbols[] =
         { "__init_begin", "_sinittext", "_einittext", NULL };
+static const char *const optim_symbols[] = { "*.constprop.*", NULL };
 
 enum mismatch {
         TEXT_TO_ANY_INIT,
@@ -1136,6 +1140,17 @@ static const struct sectioncheck *section_mismatch(
  *   This pattern is identified by
  *   refsymname = __init_begin, _sinittext, _einittext
  *
+ * Pattern 5:
+ *   GCC may optimize static inlines when fed constant arg(s) resulting
+ *   in functions like cpumask_empty() -- generating an associated symbol
+ *   cpumask_empty.constprop.3 that appears in the audit.  If the const that
+ *   is passed in comes from __init, like say nmi_ipi_mask, we get a
+ *   meaningless section warning.  May need to add isra symbols too...
+ *   This pattern is identified by
+ *   tosec   = init section
+ *   fromsec = text section
+ *   refsymname = *.constprop.*
+ *
  **/
 static int secref_whitelist(const struct sectioncheck *mismatch,
                             const char *fromsec, const char *fromsym,
@@ -1168,6 +1183,12 @@ static int secref_whitelist(const struct sectioncheck *mismatch,
         if (match(tosym, linker_symbols))
                 return 0;
 
+        /* Check for pattern 5 */
+        if (match(fromsec, text_sections) &&
+            match(tosec, init_sections) &&
+            match(fromsym, optim_symbols))
+                return 0;
+
         return 1;
 }