Revert retpoline vermagic tag

kernel.spec

@@ -42,7 +42,7 @@ Summary: The Linux kernel
 # For non-released -rc kernels, this will be appended after the rcX and
 # gitX tags, so a 3 here would become part of release "0.rcX.gitX.3"
 #
-%global baserelease 300
+%global baserelease 301
 %global fedora_build %{baserelease}
 
 # base_sublevel is the kernel version we're starting with and patching
@@ -645,6 +645,7 @@ Patch507: loop-fix-concurrent-lo_open-lo_release.patch
 
 # 550-600 Meltdown and Spectre Fixes
 Patch550: prevent-bounds-check-bypass-via-speculative-execution.patch
+Patch551: revert-module-add-retpoline-tag-to-vermagic.patch
 
 # 600 - Patches for improved Bay and Cherry Trail device support
 # Below patches are submitted upstream, awaiting review / merging
@@ -2233,6 +2234,9 @@ fi
 #
 #
 %changelog
+* Fri Jan 26 2018 Justin M. Forbes <jforbes@fedoraproject.org> - 4.14.15-301
+- Revert retpoline vermagic tag
+
 * Wed Jan 24 2018 Justin M. Forbes <jforbes@fedoraproject.org> - 4.14.15-300
 - Linux v4.14.15
 - Fix CVE-2018-1000004 (rhbz 1535315 1535316)

revert-module-add-retpoline-tag-to-vermagic.patch

@@ -0,0 +1,52 @@
+From 5132ede0fe8092b043dae09a7cc32b8ae7272baa Mon Sep 17 00:00:00 2001
+From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+Date: Wed, 24 Jan 2018 15:28:17 +0100
+Subject: Revert "module: Add retpoline tag to VERMAGIC"
+
+From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+commit 5132ede0fe8092b043dae09a7cc32b8ae7272baa upstream.
+
+This reverts commit 6cfb521ac0d5b97470883ff9b7facae264b7ab12.
+
+Turns out distros do not want to make retpoline as part of their "ABI",
+so this patch should not have been merged.  Sorry Andi, this was my
+fault, I suggested it when your original patch was the "correct" way of
+doing this instead.
+
+Reported-by: Jiri Kosina <jikos@kernel.org>
+Fixes: 6cfb521ac0d5 ("module: Add retpoline tag to VERMAGIC")
+Acked-by: Andi Kleen <ak@linux.intel.com>
+Cc: Thomas Gleixner <tglx@linutronix.de>
+Cc: David Woodhouse <dwmw@amazon.co.uk>
+Cc: rusty@rustcorp.com.au
+Cc: arjan.van.de.ven@intel.com
+Cc: jeyu@kernel.org
+Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ include/linux/vermagic.h |    8 +-------
+ 1 file changed, 1 insertion(+), 7 deletions(-)
+
+--- a/include/linux/vermagic.h
++++ b/include/linux/vermagic.h
+@@ -31,17 +31,11 @@
+ #else
+ #define MODULE_RANDSTRUCT_PLUGIN
+ #endif
+-#ifdef RETPOLINE
+-#define MODULE_VERMAGIC_RETPOLINE "retpoline "
+-#else
+-#define MODULE_VERMAGIC_RETPOLINE ""
+-#endif
+ 
+ #define VERMAGIC_STRING 						\
+ 	UTS_RELEASE " "							\
+ 	MODULE_VERMAGIC_SMP MODULE_VERMAGIC_PREEMPT 			\
+ 	MODULE_VERMAGIC_MODULE_UNLOAD MODULE_VERMAGIC_MODVERSIONS	\
+ 	MODULE_ARCH_VERMAGIC						\
+-	MODULE_RANDSTRUCT_PLUGIN					\
+-	MODULE_VERMAGIC_RETPOLINE
++	MODULE_RANDSTRUCT_PLUGIN
+