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    Subject[PATCH 4.19 291/639] arm64/vdso: dont leak kernel addresses
    Date
    From: Matteo Croce <mcroce@redhat.com>

    [ Upstream commit 0f1bf7e39822476b2f921435cf990f67a61f5f92 ]

    Since commit ad67b74d2469d9b8 ("printk: hash addresses printed with %p"),
    two obfuscated kernel pointer are printed at every boot:

    vdso: 2 pages (1 code @ (____ptrval____), 1 data @ (____ptrval____))

    Remove the the print completely, as it's useless without the addresses.

    Fixes: ad67b74d2469d9b8 ("printk: hash addresses printed with %p")
    Acked-by: Mark Rutland <mark.rutland@arm.com>
    Signed-off-by: Matteo Croce <mcroce@redhat.com>
    Signed-off-by: Will Deacon <will.deacon@arm.com>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    arch/arm64/kernel/vdso.c | 2 --
    1 file changed, 2 deletions(-)

    diff --git a/arch/arm64/kernel/vdso.c b/arch/arm64/kernel/vdso.c
    index ec0bb588d7553..42b7082029e1d 100644
    --- a/arch/arm64/kernel/vdso.c
    +++ b/arch/arm64/kernel/vdso.c
    @@ -146,8 +146,6 @@ static int __init vdso_init(void)
    }

    vdso_pages = (vdso_end - vdso_start) >> PAGE_SHIFT;
    - pr_info("vdso: %ld pages (%ld code @ %p, %ld data @ %p)\n",
    - vdso_pages + 1, vdso_pages, vdso_start, 1L, vdso_data);

    /* Allocate the vDSO pagelist, plus a page for the data. */
    vdso_pagelist = kcalloc(vdso_pages + 1, sizeof(struct page *),
    --
    2.20.1


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