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| author | Álvaro Fernández Rojas <noltari@gmail.com> | 2017-02-07 21:07:54 +0100 |
|---|---|---|
| committer | Álvaro Fernández Rojas <noltari@gmail.com> | 2017-02-07 23:00:16 +0100 |
| commit | 96aa0c6b0b179518e0c228362ea55f1c7793bb3a (patch) | |
| tree | 3244114239a7bbf380ee9fa76680b55e459e06c0 /target/linux/brcm2708/patches-4.9/0126-ARM64-Enable-Kernel-Address-Space-Randomization-1792.patch | |
| parent | 6b5c3fd055f64ce0f9d111820123caf33632a51f (diff) | |
| download | upstream-96aa0c6b0b179518e0c228362ea55f1c7793bb3a.tar.gz upstream-96aa0c6b0b179518e0c228362ea55f1c7793bb3a.tar.bz2 upstream-96aa0c6b0b179518e0c228362ea55f1c7793bb3a.zip | |
brcm2708: add linux 4.9 support
Patches from Raspberry Pi repo:
https://github.com/raspberrypi/linux/commits/rpi-4.9.y
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Diffstat (limited to 'target/linux/brcm2708/patches-4.9/0126-ARM64-Enable-Kernel-Address-Space-Randomization-1792.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.9/0126-ARM64-Enable-Kernel-Address-Space-Randomization-1792.patch | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.9/0126-ARM64-Enable-Kernel-Address-Space-Randomization-1792.patch b/target/linux/brcm2708/patches-4.9/0126-ARM64-Enable-Kernel-Address-Space-Randomization-1792.patch new file mode 100644 index 0000000000..dff27b9ef0 --- /dev/null +++ b/target/linux/brcm2708/patches-4.9/0126-ARM64-Enable-Kernel-Address-Space-Randomization-1792.patch @@ -0,0 +1,31 @@ +From 8930b9b96484e1fd68438c78e44b8ef7cb2d61ac Mon Sep 17 00:00:00 2001 +From: Electron752 <mzoran@crowfest.net> +Date: Sat, 14 Jan 2017 02:54:26 -0800 +Subject: [PATCH] ARM64: Enable Kernel Address Space Randomization (#1792) + +Randomization allows the mapping between virtual addresses and physical +address to be different on each boot. This makes it more difficult +to exploit security vulnerabilities that require knowledge of fixed +hardware addresses. + +The firmware generates a 8 byte random number during bootup and stores +it in the device tree under chosen/kaslr-seed. This number is used +to randomize the address mapping. + +This change enables this feature in the build configuration for ARM64. + +Signed-off-by: Michael Zoran <mzoran@crowfest.net> +--- + arch/arm64/configs/bcmrpi3_defconfig | 1 + + 1 file changed, 1 insertion(+) + +--- a/arch/arm64/configs/bcmrpi3_defconfig ++++ b/arch/arm64/configs/bcmrpi3_defconfig +@@ -53,6 +53,7 @@ CONFIG_ARMV8_DEPRECATED=y + CONFIG_SWP_EMULATION=y + CONFIG_CP15_BARRIER_EMULATION=y + CONFIG_SETEND_EMULATION=y ++CONFIG_RANDOMIZE_BASE=y + CONFIG_CMDLINE="console=ttyAMA0,115200 kgdboc=ttyAMA0,115200 root=/dev/mmcblk0p2 rootfstype=ext4 rootwait" + CONFIG_BINFMT_MISC=y + CONFIG_COMPAT=y |