From edcc1a0fccc97be871d465fbb8bad752ba4e477d Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Wed, 31 Jul 2019 12:38:48 +0100 Subject: [PATCH] ARM: 8896/1: VDSO: Don't leak kernel addresses BugLink: https://bugs.launchpad.net/bugs/1863019 [ Upstream commit 3e07590e7248db951fed6a2039403b5a39010be7 ] Since commit ad67b74d2469d9b8 ("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 0f1bf7e39822476b ("arm64/vdso: don't leak kernel addresses"). Fixes: ad67b74d2469d9b8 ("printk: hash addresses printed with %p") Signed-off-by: Geert Uytterhoeven Signed-off-by: Russell King Signed-off-by: Sasha Levin Signed-off-by: Kamal Mostafa Signed-off-by: Khalid Elmously --- arch/arm/kernel/vdso.c | 1 - 1 file changed, 1 deletion(-) diff --git a/arch/arm/kernel/vdso.c b/arch/arm/kernel/vdso.c index f4dd7f9663c1..e8cda5e02b4e 100644 --- a/arch/arm/kernel/vdso.c +++ b/arch/arm/kernel/vdso.c @@ -205,7 +205,6 @@ 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 *), -- 2.39.2