DO_NOT_SANITIZE_ADDRESS_ATTRIBUTE

Signed-off-by: Pavel Filipenský <pfilipensky@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>

diff --git a/src/priv_wrapper.c b/src/priv_wrapper.c
index 86d09af41bc17471079aa78d9c6cf860fb8cc7f2..b8be4c3903bd9c433737a6a642ecaed4b1c6a898 100644 (file)
--- a/src/priv_wrapper.c
+++ b/src/priv_wrapper.c
@@ -114,6 +114,13 @@ void privwrap_destructor(void) DESTRUCTOR_ATTRIBUTE;
 static void privwrap_log(enum privwrap_dbglvl_e dbglvl, const char *func, const char *format, ...) PRINTF_ATTRIBUTE(3, 4);
 # define PRIVWRAP_LOG(dbglvl, ...) privwrap_log((dbglvl), __func__, __VA_ARGS__)
 
+/*
+ * DO_NOT_SANITIZE_ADDRESS_ATTRIBUTE is used to avoid libasan to check all calls
+ * used by setrlimit(). setrlimit() is called by every process too early,
+ * already from _dl_init(), before call of __asan_init(), thus libasan is not
+ * yet fully initialized. This causes SIGSEGV and process crash.
+ */
+DO_NOT_SANITIZE_ADDRESS_ATTRIBUTE
 static void privwrap_log(enum privwrap_dbglvl_e dbglvl,
                      const char *func,
                      const char *format, ...)
@@ -223,6 +230,7 @@ static const char *privwrap_str_lib(enum privwrap_lib lib)
        return "unknown";
 }
 
+DO_NOT_SANITIZE_ADDRESS_ATTRIBUTE
 static void *privwrap_load_lib_handle(enum privwrap_lib lib)
 {
        int flags = RTLD_LAZY;
@@ -327,6 +335,7 @@ static void *_privwrap_bind_symbol(enum privwrap_lib lib, const char *fn_name)
                        _privwrap_bind_symbol(PRIVWRAP_LIBC, #sym_name); \
        }
 
+DO_NOT_SANITIZE_ADDRESS_ATTRIBUTE
 static void __pwrap_bind_symbol_all_once(void)
 {
 #ifdef HAVE_SETRLIMIT
@@ -338,6 +347,7 @@ static void __pwrap_bind_symbol_all_once(void)
 #endif
 }
 
+DO_NOT_SANITIZE_ADDRESS_ATTRIBUTE
 static void pwrap_bind_symbol_all(void)
 {
        static pthread_once_t all_symbol_binding_once = PTHREAD_ONCE_INIT;
@@ -398,6 +408,7 @@ static int libc_setrlimit(int resource,
  * PRIVWRAP HELPER FUNCTIONS
  *********************************************************/
 
+DO_NOT_SANITIZE_ADDRESS_ATTRIBUTE
 bool priv_wrapper_enabled(void)
 {
        const char *env;
@@ -551,6 +562,7 @@ static bool privwrap_setrlimit_disabled(const char *resource)
        return true;
 }
 
+DO_NOT_SANITIZE_ADDRESS_ATTRIBUTE
 static int privwrap_setrlimit(int resource, const struct rlimit *rlp)
 {
        bool setrlimit_disabled = false;
@@ -655,6 +667,7 @@ static int privwrap_setrlimit(int resource, const struct rlimit *rlp)
        return rc;
 }
 
+DO_NOT_SANITIZE_ADDRESS_ATTRIBUTE
 #ifdef _GNU_SOURCE
 int setrlimit(__rlimit_resource_t resource, const struct rlimit *rlp)
 #else