From: Matteo Croce <mcroce@redhat.com>
To: linux-arm-kernel@lists.infradead.org
Cc: Mark Rutland <mark.rutland@arm.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will.deacon@arm.com>
Subject: [PATCH v2] arm64/vdso: don't leak kernel addresses
Date: Mon, 1 Apr 2019 12:44:47 +0200 [thread overview]
Message-ID: <20190401104447.12409-1-mcroce@redhat.com> (raw)
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@arm.com>
Signed-off-by: Matteo Croce <mcroce@redhat.com>
---
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 2d419006ad43..9fb0c0c95a85 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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next reply other threads:[~2019-04-01 10:45 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-01 10:44 Matteo Croce [this message]
2019-04-03 12:27 ` [PATCH v2] arm64/vdso: don't leak kernel addresses Will Deacon
2019-04-03 13:32 ` Marc Gonzalez
2019-04-03 13:34 ` Matteo Croce
2019-04-03 13:36 ` Will Deacon
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