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    Subject[PATCH 4.19 078/146] x86/entry/32: Add missing ASM_CLAC to general_protection entry
    Date
    From: Thomas Gleixner <tglx@linutronix.de>

    commit 3d51507f29f2153a658df4a0674ec5b592b62085 upstream.

    All exception entry points must have ASM_CLAC right at the
    beginning. The general_protection entry is missing one.

    Fixes: e59d1b0a2419 ("x86-32, smap: Add STAC/CLAC instructions to 32-bit kernel entry")
    Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
    Reviewed-by: Frederic Weisbecker <frederic@kernel.org>
    Reviewed-by: Alexandre Chartre <alexandre.chartre@oracle.com>
    Reviewed-by: Andy Lutomirski <luto@kernel.org>
    Cc: stable@vger.kernel.org
    Link: https://lkml.kernel.org/r/20200225220216.219537887@linutronix.de
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    arch/x86/entry/entry_32.S | 1 +
    1 file changed, 1 insertion(+)

    --- a/arch/x86/entry/entry_32.S
    +++ b/arch/x86/entry/entry_32.S
    @@ -1489,6 +1489,7 @@ ENTRY(int3)
    END(int3)

    ENTRY(general_protection)
    + ASM_CLAC
    pushl $do_general_protection
    jmp common_exception
    END(general_protection)

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