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    Subject[PATCH 4.19 126/321] kprobes/x86/xen: blacklist non-attachable xen interrupt functions
    Date
    From: Andrea Righi <righi.andrea@gmail.com>

    [ Upstream commit bf9445a33ae6ac2f0822d2f1ce1365408387d568 ]

    Blacklist symbols in Xen probe-prohibited areas, so that user can see
    these prohibited symbols in debugfs.

    See also: a50480cb6d61.

    Signed-off-by: Andrea Righi <righi.andrea@gmail.com>
    Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
    Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    arch/x86/xen/xen-asm_64.S | 2 ++
    1 file changed, 2 insertions(+)

    diff --git a/arch/x86/xen/xen-asm_64.S b/arch/x86/xen/xen-asm_64.S
    index 3a6feed76dfc1..a93d8a7cef26c 100644
    --- a/arch/x86/xen/xen-asm_64.S
    +++ b/arch/x86/xen/xen-asm_64.S
    @@ -12,6 +12,7 @@
    #include <asm/segment.h>
    #include <asm/asm-offsets.h>
    #include <asm/thread_info.h>
    +#include <asm/asm.h>

    #include <xen/interface/xen.h>

    @@ -24,6 +25,7 @@ ENTRY(xen_\name)
    pop %r11
    jmp \name
    END(xen_\name)
    +_ASM_NOKPROBE(xen_\name)
    .endm

    xen_pv_trap divide_error
    --
    2.20.1


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