6.1-stable review patch. If anyone has any objections, please let me know.
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From: John Sperbeck jsperbeck@google.com
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@google.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- 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; }