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authorJosh Poimboeuf <jpoimboe@redhat.com>2017-08-10 16:37:25 -0500
committerIngo Molnar <mingo@kernel.org>2017-08-11 14:06:14 +0200
commit12b25729a194198e3c4289adaddc4115b10b094e (patch)
treefc39c0dd9935d7254cd1c004542fd19da27c6696 /tools/objtool
parent01651324edad9db4fe49fb39b905c76861649b4c (diff)
downloadlinux-stericsson-12b25729a194198e3c4289adaddc4115b10b094e.tar.gz
objtool: Fix validate_branch() return codes
The validate_branch() function should never return a negative value. Errors are treated as warnings so that even if something goes wrong, objtool does its best to generate ORC data for the rest of the file. Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Fixes: baa41469a7b9 ("objtool: Implement stack validation 2.0") Link: http://lkml.kernel.org/r/d86671cfde823b50477cd2f6f548dfe54871e24d.1502401017.git.jpoimboe@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'tools/objtool')
-rw-r--r--tools/objtool/check.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/tools/objtool/check.c b/tools/objtool/check.c
index 4f0c4aea8f6f..5814e907f8c2 100644
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -1524,7 +1524,7 @@ static int validate_branch(struct objtool_file *file, struct instruction *first,
if (insn->alt_group && list_empty(&insn->alts)) {
WARN_FUNC("don't know how to handle branch to middle of alternative instruction group",
sec, insn->offset);
- return -1;
+ return 1;
}
while (1) {
@@ -1543,7 +1543,7 @@ static int validate_branch(struct objtool_file *file, struct instruction *first,
if (func && insn->ignore) {
WARN_FUNC("BUG: why am I validating an ignored function?",
sec, insn->offset);
- return -1;
+ return 1;
}
if (insn->visited) {
@@ -1681,7 +1681,7 @@ static int validate_branch(struct objtool_file *file, struct instruction *first,
case INSN_STACK:
if (update_insn_state(insn, &state))
- return -1;
+ return 1;
break;