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Message-Id: <20200116170509.12787-13-sashal@kernel.org>
Date: Thu, 16 Jan 2020 11:58:34 -0500
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc: Matteo Croce <mcroce@...hat.com>,
Mark Rutland <mark.rutland@....com>,
Will Deacon <will.deacon@....com>,
Sasha Levin <sashal@...nel.org>,
linux-arm-kernel@...ts.infradead.org
Subject: [PATCH AUTOSEL 4.19 276/671] arm64/vdso: don't leak kernel addresses
From: Matteo Croce <mcroce@...hat.com>
[ 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 <mark.rutland@....com>
Signed-off-by: Matteo Croce <mcroce@...hat.com>
Signed-off-by: Will Deacon <will.deacon@....com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
arch/arm64/kernel/vdso.c | 2 --
1 file changed, 2 deletions(-)
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 *),
--
2.20.1
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