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ARM: 8896/1: VDSO: Don't leak kernel addresses 

Since commit ad67b74d24 ("printk: hash addresses printed with
%p"), an obfuscated kernel pointer is printed at every boot if
debugging is enabled:

    vdso: 1 text pages at base (____ptrval____)

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

Based on commit 0f1bf7e398 ("arm64/vdso: don't leak kernel
addresses").

Fixes: ad67b74d24 ("printk: hash addresses printed with %p")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
This commit is contained in:
Geert Uytterhoeven 2019-07-31 12:38:48 +01:00 committed by Russell King
parent 2a58e142a6
commit 3e07590e72
1 changed files with 0 additions and 1 deletions
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1
arch/arm/kernel/vdso.c
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@ -194,7 +194,6 @@ static int __init vdso_init(void)
} }
text_pages = (vdso_end - vdso_start) >> PAGE_SHIFT; text_pages = (vdso_end - vdso_start) >> PAGE_SHIFT;
pr_debug("vdso: %i text pages at base %p\n", text_pages, vdso_start);
/* Allocate the VDSO text pagelist */ /* Allocate the VDSO text pagelist */
vdso_text_pagelist = kcalloc(text_pages, sizeof(struct page *), vdso_text_pagelist = kcalloc(text_pages, sizeof(struct page *),