diff options
| -rw-r--r-- | scripts/mod/modpost.c | 21 |
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; } |