From: Lukas Bulwahn <lukas.bulwahn@xxxxxxxxx> commit 82ca67321f55a8d1da6ac3ed611da3c32818bb37 upstream. The config RANDOMIZE_SLAB does not exist, the authors probably intended to refer to the config RANDOMIZE_BASE, which provides kernel address-space randomization. They probably just confused SLAB with BASE (these two four-letter words coincidentally share three common letters), as they also point out the config SLAB_FREELIST_RANDOM as further randomization within the same sentence. Fix the reference of the config for kernel address-space randomization to the config that provides that. Fixes: 6e88559470f5 ("Documentation: Add section about CPU vulnerabilities for Spectre") Signed-off-by: Lukas Bulwahn <lukas.bulwahn@xxxxxxxxx> Link: https://lore.kernel.org/r/20211230171940.27558-1-lukas.bulwahn@xxxxxxxxx Signed-off-by: Jonathan Corbet <corbet@xxxxxxx> [bwh: Backported to 4.9: adjust filename] Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- Documentation/hw-vuln/spectre.rst | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/Documentation/hw-vuln/spectre.rst +++ b/Documentation/hw-vuln/spectre.rst @@ -468,7 +468,7 @@ Spectre variant 2 before invoking any firmware code to prevent Spectre variant 2 exploits using the firmware. - Using kernel address space randomization (CONFIG_RANDOMIZE_SLAB=y + Using kernel address space randomization (CONFIG_RANDOMIZE_BASE=y and CONFIG_SLAB_FREELIST_RANDOM=y in the kernel configuration) makes attacks on the kernel generally more difficult. Patches currently in stable-queue which might be from lukas.bulwahn@xxxxxxxxx are queue-4.9/documentation-refer-to-config-randomize_base-for-kernel-address-space-randomization.patch