[PATCH v6 31/33] arm64: kernel: Skip validation of proton-pack.c
From: Chen Zhongjin <hidden>
Date: 2022-06-23 01:54:19
Also in:
linux-arch, linux-arm-kernel, linux-kbuild, live-patching, lkml
Subsystem:
arm64 port (aarch64 architecture), the rest · Maintainers:
Catalin Marinas, Will Deacon, Linus Torvalds
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 <redacted> Signed-off-by: Chen Zhongjin <redacted> --- 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