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Subject[PATCH AUTOSEL 4.19 26/52] x86/mm: Don't leak kernel addresses
Date
From: Matteo Croce <mcroce@redhat.com>

[ Upstream commit a3151724437f54076cc10bc02b1c4f0003ae36cd ]

Since commit:

ad67b74d2469d9b8 ("printk: hash addresses printed with %p")

at boot "____ptrval____" is printed instead of actual addresses:

found SMP MP-table at [mem 0x000f5cc0-0x000f5ccf] mapped at [(____ptrval____)]

Instead of changing the print to "%px", and leaking a kernel addresses,
just remove the print completely, like in:

071929dbdd865f77 ("arm64: Stop printing the virtual memory layout").

Signed-off-by: Matteo Croce <mcroce@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/x86/kernel/mpparse.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kernel/mpparse.c b/arch/x86/kernel/mpparse.c
index f1c5eb99d445..ddb1ca6923b1 100644
--- a/arch/x86/kernel/mpparse.c
+++ b/arch/x86/kernel/mpparse.c
@@ -599,8 +599,8 @@ static int __init smp_scan_config(unsigned long base, unsigned long length)
mpf_base = base;
mpf_found = true;

- pr_info("found SMP MP-table at [mem %#010lx-%#010lx] mapped at [%p]\n",
- base, base + sizeof(*mpf) - 1, mpf);
+ pr_info("found SMP MP-table at [mem %#010lx-%#010lx]\n",
+ base, base + sizeof(*mpf) - 1);

memblock_reserve(base, sizeof(*mpf));
if (mpf->physptr)
--
2.19.1
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