scripts: modpost: check memory allocation results
[ Upstream commit 1f3aa9002dc6a0d59a4b599b4fc8f01cf43ef014 ] 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> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -636,7 +636,7 @@ static void handle_modversions(struct module *mod, struct elf_info *info,
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if (ELF_ST_TYPE(sym->st_info) == STT_SPARC_REGISTER)
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if (ELF_ST_TYPE(sym->st_info) == STT_SPARC_REGISTER)
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break;
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break;
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if (symname[0] == '.') {
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if (symname[0] == '.') {
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char *munged = strdup(symname);
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char *munged = NOFAIL(strdup(symname));
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munged[0] = '_';
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munged[0] = '_';
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munged[1] = toupper(munged[1]);
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munged[1] = toupper(munged[1]);
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symname = munged;
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symname = munged;
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@ -1265,7 +1265,7 @@ static Elf_Sym *find_elf_symbol2(struct elf_info *elf, Elf_Addr addr,
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static char *sec2annotation(const char *s)
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static char *sec2annotation(const char *s)
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{
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{
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if (match(s, init_exit_sections)) {
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if (match(s, init_exit_sections)) {
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char *p = malloc(20);
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char *p = NOFAIL(malloc(20));
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char *r = p;
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char *r = p;
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*p++ = '_';
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*p++ = '_';
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@ -1285,7 +1285,7 @@ static char *sec2annotation(const char *s)
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strcat(p, " ");
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strcat(p, " ");
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return r;
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return r;
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} else {
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} else {
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return strdup("");
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return NOFAIL(strdup(""));
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}
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}
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}
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}
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@ -1814,7 +1814,7 @@ void buf_write(struct buffer *buf, const char *s, int len)
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{
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{
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if (buf->size - buf->pos < len) {
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if (buf->size - buf->pos < len) {
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buf->size += len + SZ;
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buf->size += len + SZ;
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buf->p = realloc(buf->p, buf->size);
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buf->p = NOFAIL(realloc(buf->p, buf->size));
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}
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}
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strncpy(buf->p + buf->pos, s, len);
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strncpy(buf->p + buf->pos, s, len);
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buf->pos += len;
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buf->pos += len;
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