[PATCH] objtool: initialize all of struct elf

[Michal Kubecek <mkubecek@suse.cz>]

Function elf_open_read() only zero initializes the initial part of
allocated struct elf; num_relocs member was recently added outside the
zeroed part so that it was left uninitialized, resulting in build failures
on some systems.

The partial initialization is a relic of times when struct elf had large
hash tables embedded. This is no longer the case so remove the trap and
initialize the whole structure instead.

Fixes: eb0481bbc4ce ("objtool: Fix reloc_hash size")
Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
---
 tools/objtool/elf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/objtool/elf.c b/tools/objtool/elf.c
index d420b5d2e2b6..081befa4674b 100644
--- a/tools/objtool/elf.c
+++ b/tools/objtool/elf.c
@@ -1005,7 +1005,7 @@ struct elf *elf_open_read(const char *name, int flags)
 		perror("malloc");
 		return NULL;
 	}
-	memset(elf, 0, offsetof(struct elf, sections));
+	memset(elf, 0, sizeof(*elf));
 
 	INIT_LIST_HEAD(&elf->sections);
 
-- 
2.41.0