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Date:   Mon, 22 Apr 2019 15:41:35 -0400
From:   Sasha Levin <>
Cc:     Matteo Croce <>, Borislav Petkov <>,
        "H. Peter Anvin" <>, Ingo Molnar <>,
        Thomas Gleixner <>, x86-ml <>,
        Sasha Levin <>
Subject: [PATCH AUTOSEL 5.0 68/98] x86/realmode: Don't leak the trampoline kernel address

From: Matteo Croce <>

[ Upstream commit b929a500d68479163c48739d809cbf4c1335db6f ]

Since commit

  ad67b74d2469 ("printk: hash addresses printed with %p")

at boot "____ptrval____" is printed instead of the trampoline addresses:

  Base memory trampoline at [(____ptrval____)] 99000 size 24576

Remove the print as we don't want to leak kernel addresses and this
statement is not needed anymore.

Fixes: ad67b74d2469d9b8 ("printk: hash addresses printed with %p")
Signed-off-by: Matteo Croce <>
Signed-off-by: Borislav Petkov <>
Cc: "H. Peter Anvin" <>
Cc: Ingo Molnar <>
Cc: Thomas Gleixner <>
Cc: x86-ml <>
Signed-off-by: Sasha Levin (Microsoft) <>
 arch/x86/realmode/init.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/arch/x86/realmode/init.c b/arch/x86/realmode/init.c
index d10105825d57..47d097946872 100644
--- a/arch/x86/realmode/init.c
+++ b/arch/x86/realmode/init.c
@@ -20,8 +20,6 @@ void __init set_real_mode_mem(phys_addr_t mem, size_t size)
 	void *base = __va(mem);
 	real_mode_header = (struct real_mode_header *) base;
-	printk(KERN_DEBUG "Base memory trampoline at [%p] %llx size %zu\n",
-	       base, (unsigned long long)mem, size);
 void __init reserve_real_mode(void)

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