[PATCH 6.1 86/86] objtool/x86: add missing embedded_insn check

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6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: John Sperbeck <jsperbeck@xxxxxxxxxx>

When dbf460087755 ("objtool/x86: Fixup frame-pointer vs rethunk")
was backported to some stable branches, the check for dest->embedded_insn
in is_special_call() was missed.  The result is that the warning it
was intended to suppress still appears.  For example on 6.1 (on kernels
before 6.1, the '-s' argument would instead be 'check'):

$ tools/objtool/objtool -s arch/x86/lib/retpoline.o
arch/x86/lib/retpoline.o: warning: objtool: srso_untrain_ret+0xd:
    call without frame pointer save/setup

With this patch, the warning is correctly suppressed, and the
kernel still passes the normal Google kernel developer tests.

Signed-off-by: John Sperbeck <jsperbeck@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 tools/objtool/check.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -2478,7 +2478,7 @@ static bool is_special_call(struct instr
 		if (!dest)
 			return false;
 
-		if (dest->fentry)
+		if (dest->fentry || dest->embedded_insn)
 			return true;
 	}
 





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