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From:   Chen Zhongjin <chenzhongjin@huawei.com>
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Subject: [PATCH v6 31/33] arm64: kernel: Skip validation of proton-pack.c
Date:   Thu, 23 Jun 2022 09:49:15 +0800
Message-ID: <20220623014917.199563-32-chenzhongjin@huawei.com>
In-Reply-To: <20220623014917.199563-1-chenzhongjin@huawei.com>
References: <20220623014917.199563-1-chenzhongjin@huawei.com>
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qcom_link_stack_sanitisation() repeatly calls itself, but we can't
mark the asm code as intra-call so it should be marked as non_standard.

Signed-off-by: Julien Thierry <jthierry@redhat.com>
Signed-off-by: Chen Zhongjin <chenzhongjin@huawei.com>
---
 arch/arm64/kernel/proton-pack.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/kernel/proton-pack.c b/arch/arm64/kernel/proton-pack.c
index 40be3a7c2c53..9439e62d4b57 100644
--- a/arch/arm64/kernel/proton-pack.c
+++ b/arch/arm64/kernel/proton-pack.c
@@ -22,6 +22,7 @@
 #include <linux/cpu.h>
 #include <linux/device.h>
 #include <linux/nospec.h>
+#include <linux/objtool.h>
 #include <linux/prctl.h>
 #include <linux/sched/task_stack.h>
 
@@ -257,6 +258,7 @@ static noinstr void qcom_link_stack_sanitisation(void)
 		     "mov	x30, %0		\n"
 		     : "=&r" (tmp));
 }
+STACK_FRAME_NON_STANDARD(qcom_link_stack_sanitisation);
 
 static bp_hardening_cb_t spectre_v2_get_sw_mitigation_cb(void)
 {
-- 
2.17.1