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authorSami Tolvanen <samitolvanen@google.com>2020-07-17 22:04:27 +0300
committerKees Cook <keescook@chromium.org>2021-02-23 23:46:57 +0300
commit0e731dbc18241d68318e0a7d2c2c0087c9073fb9 (patch)
treef84a8f54bed013cb49dc370484745143abc72133
parent18a14575ae31c5a97a5e87e961932a5016d369be (diff)
downloadlinux-0e731dbc18241d68318e0a7d2c2c0087c9073fb9.tar.xz
objtool: Don't autodetect vmlinux.o
With LTO, we run objtool on vmlinux.o, but don't want noinstr validation. This change requires --vmlinux to be passed to objtool explicitly. Suggested-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Sami Tolvanen <samitolvanen@google.com> Reviewed-by: Kees Cook <keescook@chromium.org>
-rwxr-xr-xscripts/link-vmlinux.sh2
-rw-r--r--tools/objtool/builtin-check.c6
2 files changed, 2 insertions, 6 deletions
diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh
index c5919d5a0b4f..423a4106f0dd 100755
--- a/scripts/link-vmlinux.sh
+++ b/scripts/link-vmlinux.sh
@@ -106,7 +106,7 @@ objtool_link()
local objtoolopt;
if [ -n "${CONFIG_VMLINUX_VALIDATION}" ]; then
- objtoolopt="check"
+ objtoolopt="check --vmlinux"
if [ -z "${CONFIG_FRAME_POINTER}" ]; then
objtoolopt="${objtoolopt} --no-fp"
fi
diff --git a/tools/objtool/builtin-check.c b/tools/objtool/builtin-check.c
index e92e76f69176..facfc10bc5dc 100644
--- a/tools/objtool/builtin-check.c
+++ b/tools/objtool/builtin-check.c
@@ -41,7 +41,7 @@ const struct option check_options[] = {
int cmd_check(int argc, const char **argv)
{
- const char *objname, *s;
+ const char *objname;
struct objtool_file *file;
int ret;
@@ -52,10 +52,6 @@ int cmd_check(int argc, const char **argv)
objname = argv[0];
- s = strstr(objname, "vmlinux.o");
- if (s && !s[9])
- vmlinux = true;
-
file = objtool_open_read(objname);
if (!file)
return 1;