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    Subject[PATCH v6 31/33] arm64: kernel: Skip validation of proton-pack.c
    Date
    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
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