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From: ccross@android.com (Colin Cross)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] security: select correct default LSM_MMAP_MIN_ADDR on arm on arm64
Date: Mon,  3 Feb 2014 18:15:32 -0800	[thread overview]
Message-ID: <1391480133-27149-1-git-send-email-ccross@android.com> (raw)

Binaries compiled for arm may run on arm64 if CONFIG_COMPAT is
selected.  Set LSM_MMAP_MIN_ADDR to 32768 if ARM64 && COMPAT to
prevent selinux failures launching 32-bit static executables that
are mapped at 0x8000.

Signed-off-by: Colin Cross <ccross@android.com>
---
 security/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/security/Kconfig b/security/Kconfig
index e9c6ac724fef..beb86b500adf 100644
--- a/security/Kconfig
+++ b/security/Kconfig
@@ -103,7 +103,7 @@ config INTEL_TXT
 config LSM_MMAP_MIN_ADDR
 	int "Low address space for LSM to protect from user allocation"
 	depends on SECURITY && SECURITY_SELINUX
-	default 32768 if ARM
+	default 32768 if ARM || (ARM64 && COMPAT)
 	default 65536
 	help
 	  This is the portion of low virtual memory which should be protected
-- 
1.9.0.rc1.175.g0b1dcb5

             reply	other threads:[~2014-02-04  2:15 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-02-04  2:15 Colin Cross [this message]
2014-02-04  9:38 ` [PATCH] security: select correct default LSM_MMAP_MIN_ADDR on arm on arm64 Will Deacon
2014-02-05  9:27   ` Eric Paris
2014-02-05 11:48 ` Catalin Marinas
2014-02-05 14:02   ` James Morris
2014-02-05 14:57     ` Catalin Marinas

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