scripts: modpost: check memory allocation results

Fix missing error check for memory allocation functions in
scripts/mod/modpost.c.

Fixes kernel bugzilla #200319:
https://bugzilla.kernel.org/show_bug.cgi?id=200319

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Yuexing Wang <wangyxlandq@gmail.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index dc6d714e4dcb310817de378ec88e136263ab8030..0d998c54564dfdc5793faa968f72e8e985bce6c8 100644 (file)
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -672,7 +672,7 @@ static void handle_modversions(struct module *mod, struct elf_info *info,
                        if (ELF_ST_TYPE(sym->st_info) == STT_SPARC_REGISTER)
                                break;
                        if (symname[0] == '.') {
-                               char *munged = strdup(symname);
+                               char *munged = NOFAIL(strdup(symname));
                                munged[0] = '_';
                                munged[1] = toupper(munged[1]);
                                symname = munged;
@@ -1318,7 +1318,7 @@ static Elf_Sym *find_elf_symbol2(struct elf_info *elf, Elf_Addr addr,
 static char *sec2annotation(const char *s)
 {
        if (match(s, init_exit_sections)) {
-               char *p = malloc(20);
+               char *p = NOFAIL(malloc(20));
                char *r = p;
 
                *p++ = '_';
@@ -1338,7 +1338,7 @@ static char *sec2annotation(const char *s)
                        strcat(p, " ");
                return r;
        } else {
-               return strdup("");
+               return NOFAIL(strdup(""));
        }
 }
 
@@ -2036,7 +2036,7 @@ void buf_write(struct buffer *buf, const char *s, int len)
 {
        if (buf->size - buf->pos < len) {
                buf->size += len + SZ;
-               buf->p = realloc(buf->p, buf->size);
+               buf->p = NOFAIL(realloc(buf->p, buf->size));
        }
        strncpy(buf->p + buf->pos, s, len);
        buf->pos += len;