6.8-stable review patch. If anyone has any objections, please let me know.
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From: Borislav Petkov (AMD) bp@alien8.de
commit b377c66ae3509ccea596512d6afb4777711c4870 upstream.
srso_alias_untrain_ret() is special code, even if it is a dummy which is called in the !SRSO case, so annotate it like its real counterpart, to address the following objtool splat:
vmlinux.o: warning: objtool: .export_symbol+0x2b290: data relocation to !ENDBR: srso_alias_untrain_ret+0x0
Fixes: 4535e1a4174c ("x86/bugs: Fix the SRSO mitigation on Zen3/4") Signed-off-by: Borislav Petkov (AMD) bp@alien8.de Signed-off-by: Ingo Molnar mingo@kernel.org Cc: Linus Torvalds torvalds@linux-foundation.org Link: https://lore.kernel.org/r/20240405144637.17908-1-bp@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/x86/lib/retpoline.S | 1 + 1 file changed, 1 insertion(+)
--- a/arch/x86/lib/retpoline.S +++ b/arch/x86/lib/retpoline.S @@ -230,6 +230,7 @@ SYM_CODE_END(srso_return_thunk) /* Dummy for the alternative in CALL_UNTRAIN_RET. */ SYM_CODE_START(srso_alias_untrain_ret) ANNOTATE_UNRET_SAFE + ANNOTATE_NOENDBR ret int3 SYM_FUNC_END(srso_alias_untrain_ret)