diff options
| author | Andi Kleen <ak@linux.intel.com> | 2018-01-16 12:52:28 -0800 |
|---|---|---|
| committer | Sasha Levin <alexander.levin@microsoft.com> | 2018-02-28 22:09:38 -0500 |
| commit | 4fddec525c9a0331be47ab58cf26cb8dd978b919 (patch) | |
| tree | 4d5efd0636484be34e5efd601fd9f1d8bfbfbac8 /fs | |
| parent | b866e768648fcd0b46fe6ba4a21577c12fb42ba1 (diff) | |
module: Add retpoline tag to VERMAGIC
[ Upstream commit 6cfb521ac0d5b97470883ff9b7facae264b7ab12 ]
Add a marker for retpoline to the module VERMAGIC. This catches the case
when a non RETPOLINE compiled module gets loaded into a retpoline kernel,
making it insecure.
It doesn't handle the case when retpoline has been runtime disabled. Even
in this case the match of the retcompile status will be enforced. This
implies that even with retpoline run time disabled all modules loaded need
to be recompiled.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: David Woodhouse <dwmw@amazon.co.uk>
Cc: rusty@rustcorp.com.au
Cc: arjan.van.de.ven@intel.com
Cc: jeyu@kernel.org
Cc: torvalds@linux-foundation.org
Link: https://lkml.kernel.org/r/20180116205228.4890-1-andi@firstfloor.org
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Diffstat (limited to 'fs')
0 files changed, 0 insertions, 0 deletions