From: Matteo Croce Date: Mon, 1 Apr 2019 10:44:47 +0000 (+0200) Subject: arm64/vdso: don't leak kernel addresses X-Git-Tag: Ubuntu-4.15.0-89.89~79 X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=6d2e73f044c89cc445b6f213da53c4190309869e;p=mirror_ubuntu-bionic-kernel.git arm64/vdso: don't leak kernel addresses BugLink: https://bugs.launchpad.net/bugs/1863019 [ 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 Signed-off-by: Matteo Croce Signed-off-by: Will Deacon Signed-off-by: Sasha Levin Signed-off-by: Kamal Mostafa Signed-off-by: Khalid Elmously --- diff --git a/arch/arm64/kernel/vdso.c b/arch/arm64/kernel/vdso.c index ec0bb588d755..42b7082029e1 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 *),