| From | Sasha Levin <> | Subject | [PATCH AUTOSEL 4.19 506/671] ARM: 8896/1: VDSO: Don't leak kernel addresses | Date | Thu, 16 Jan 2020 12:02:24 -0500 |
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From: Geert Uytterhoeven <geert@linux-m68k.org>
[ 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 <geert+renesas@glider.be> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: Sasha Levin <sashal@kernel.org> --- 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 *), -- 2.20.1
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