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Andi Kleen 5ebf8d581c module/retpoline: Warn about missing retpoline in module ... commit caf7501a1b upstream. There's a risk that a kernel which has full retpoline mitigations becomes vulnerable when a module gets loaded that hasn't been compiled with the right compiler or the right option. To enable detection of that mismatch at module load time, add a module info string "retpoline" at build time when the module was compiled with retpoline support. This only covers compiled C source, but assembler source or prebuilt object files are not checked. If a retpoline enabled kernel detects a non retpoline protected module at load time, print a warning and report it in the sysfs vulnerability file. [ tglx: Massaged changelog ] Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: David Woodhouse <dwmw2@infradead.org> Cc: gregkh@linuxfoundation.org Cc: torvalds@linux-foundation.org Cc: jeyu@kernel.org Cc: arjan@linux.intel.com Link: https://lkml.kernel.org/r/20180125235028.31211-1-andi@firstfloor.org Signed-off-by: Ben Hutchings <ben@decadent.org.uk>		History 2018-03-19 18:59:11 +00:00
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.gitignore	kbuild: trivial - remove trailing empty lines	2014-06-10 00:04:06 +02:00
devicetable-offsets.c	cpu: add generic support for CPU feature based module autoloading	2014-02-18 12:38:37 -08:00
empty.c	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
file2alias.c	of: fix autoloading due to broken modalias with no 'compatible'	2016-08-22 22:38:10 +01:00
Makefile	improve modalias building	2013-06-28 00:48:16 +02:00
mk_elfconfig.c	kbuild: trivial - remove trailing empty lines	2014-06-10 00:04:06 +02:00
modpost.c	module/retpoline: Warn about missing retpoline in module	2018-03-19 18:59:11 +00:00
modpost.h	Kbuild, lto: Drop .number postfixes in modpost	2014-02-13 20:24:58 -08:00
sumversion.c	kbuild: trivial - use tabs for code indent where possible	2014-06-10 14:00:53 +02:00