Commit 0f1bf7e3 authored Apr 01, 2019 by Matteo Croce Committed by Will Deacon Apr 03, 2019

arm64/vdso: don't leak kernel addresses



Since commit ad67b74d ("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: ad67b74d ("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>

parent 19d6242e

arch/arm64/kernel/vdso.c

+0 −2

Original line number	Diff line number	Diff line
		@@ -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 *),