Commit 3e07590e authored Jul 31, 2019 by Geert Uytterhoeven Committed by Russell King Aug 23, 2019

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



Since commit ad67b74d ("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 0f1bf7e3 ("arm64/vdso: don't leak kernel
addresses").

Fixes: ad67b74d ("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>

parent 2a58e142

arch/arm/kernel/vdso.c

+0 −1

Original line number	Diff line number	Diff line
		@@ -194,7 +194,6 @@ static int __init vdso_init(void)
		}

		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 */
		vdso_text_pagelist = kcalloc(text_pages, sizeof(struct page *),