kernel: bump 4.14 to 4.14.20

Refresh patches.
Remove upstreamed patches:
- backport/080-v4.15-0001-arch-define-weak-abort.patch
- backport/081-v4.15-0002-kernel-exit.c-export-abort-to-modules.patch
Update patch that no longer applies:
pending/493-ubi-set-ROOT_DEV-to-ubiblock-rootfs-if-unset.patch

Fixes CVE-2017-8824.

Compile-tested: octeon, x86/64.
Runtime-tested: octeon, x86/64.

Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>

9 files changed, 9 insertions, 118 deletions

diff --git a/target/linux/generic/backport-4.14/025-tcp-allow-drivers-to-tweak-TSQ-logic.patch b/target/linux/generic/backport-4.14/025-tcp-allow-drivers-to-tweak-TSQ-logic.patch
index 0c57f2e337..6c80eaa4be 100644
--- a/target/linux/generic/backport-4.14/025-tcp-allow-drivers-to-tweak-TSQ-logic.patch
+++ b/target/linux/generic/backport-4.14/025-tcp-allow-drivers-to-tweak-TSQ-logic.patch
@@ -55,7 +55,7 @@ Cc: Kir Kolyshkin <kir@openvz.org>
  	rwlock_t		sk_callback_lock;
 --- a/net/core/sock.c
 +++ b/net/core/sock.c
-@@ -2744,6 +2744,7 @@ void sock_init_data(struct socket *sock,
+@@ -2741,6 +2741,7 @@ void sock_init_data(struct socket *sock,
  
  	sk->sk_max_pacing_rate = ~0U;
  	sk->sk_pacing_rate = ~0U;
diff --git a/target/linux/generic/backport-4.14/080-v4.15-0001-arch-define-weak-abort.patch b/target/linux/generic/backport-4.14/080-v4.15-0001-arch-define-weak-abort.patch
deleted file mode 100644
index 1867234540..0000000000
--- a/target/linux/generic/backport-4.14/080-v4.15-0001-arch-define-weak-abort.patch
+++ /dev/null
@@ -1,46 +0,0 @@
-From 7c2c11b208be09c156573fc0076b7b3646e05219 Mon Sep 17 00:00:00 2001
-From: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
-Date: Thu, 14 Dec 2017 15:33:19 -0800
-Subject: [PATCH] arch: define weak abort()
-
-gcc toggle -fisolate-erroneous-paths-dereference (default at -O2
-onwards) isolates faulty code paths such as null pointer access, divide
-by zero etc.  If gcc port doesnt implement __builtin_trap, an abort() is
-generated which causes kernel link error.
-
-In this case, gcc is generating abort due to 'divide by zero' in
-lib/mpi/mpih-div.c.
-
-Currently 'frv' and 'arc' are failing.  Previously other arch was also
-broken like m32r was fixed by commit d22e3d69ee1a ("m32r: fix build
-failure").
-
-Let's define this weak function which is common for all arch and fix the
-problem permanently.  We can even remove the arch specific 'abort' after
-this is done.
-
-Link: http://lkml.kernel.org/r/1513118956-8718-1-git-send-email-sudipm.mukherjee@gmail.com
-Signed-off-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
-Cc: Alexey Brodkin <Alexey.Brodkin@synopsys.com>
-Cc: Vineet Gupta <Vineet.Gupta1@synopsys.com>
-Cc: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
-Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
-Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
----
- kernel/exit.c | 8 ++++++++
- 1 file changed, 8 insertions(+)
-
---- a/kernel/exit.c
-+++ b/kernel/exit.c
-@@ -1755,3 +1755,11 @@ Efault:
- 	return -EFAULT;
- }
- #endif
-+
-+__weak void abort(void)
-+{
-+	BUG();
-+
-+	/* if that doesn't kill us, halt */
-+	panic("Oops failed to kill thread");
-+}
diff --git a/target/linux/generic/backport-4.14/081-v4.15-0002-kernel-exit.c-export-abort-to-modules.patch b/target/linux/generic/backport-4.14/081-v4.15-0002-kernel-exit.c-export-abort-to-modules.patch
deleted file mode 100644
index 4c1402f153..0000000000
--- a/target/linux/generic/backport-4.14/081-v4.15-0002-kernel-exit.c-export-abort-to-modules.patch
+++ /dev/null
@@ -1,63 +0,0 @@
-From dc8635b78cd8669c37e230058d18c33af7451ab1 Mon Sep 17 00:00:00 2001
-From: Andrew Morton <akpm@linux-foundation.org>
-Date: Thu, 4 Jan 2018 16:17:56 -0800
-Subject: [PATCH] kernel/exit.c: export abort() to modules
-
-gcc -fisolate-erroneous-paths-dereference can generate calls to abort()
-from modular code too.
-
-[arnd@arndb.de: drop duplicate exports of abort()]
-  Link: http://lkml.kernel.org/r/20180102103311.706364-1-arnd@arndb.de
-Reported-by: Vineet Gupta <Vineet.Gupta1@synopsys.com>
-Cc: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
-Cc: Arnd Bergmann <arnd@arndb.de>
-Cc: Alexey Brodkin <Alexey.Brodkin@synopsys.com>
-Cc: Russell King <rmk+kernel@armlinux.org.uk>
-Cc: Jose Abreu <Jose.Abreu@synopsys.com>
-Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
-Signed-off-by: Arnd Bergmann <arnd@arndb.de>
-Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
----
- arch/arm/kernel/traps.c       | 1 -
- arch/m32r/kernel/traps.c      | 1 -
- arch/unicore32/kernel/traps.c | 1 -
- kernel/exit.c                 | 1 +
- 4 files changed, 1 insertion(+), 3 deletions(-)
-
---- a/arch/arm/kernel/traps.c
-+++ b/arch/arm/kernel/traps.c
-@@ -790,7 +790,6 @@ void abort(void)
- 	/* if that doesn't kill us, halt */
- 	panic("Oops failed to kill thread");
- }
--EXPORT_SYMBOL(abort);
- 
- void __init trap_init(void)
- {
---- a/arch/m32r/kernel/traps.c
-+++ b/arch/m32r/kernel/traps.c
-@@ -122,7 +122,6 @@ void abort(void)
- 	/* if that doesn't kill us, halt */
- 	panic("Oops failed to kill thread");
- }
--EXPORT_SYMBOL(abort);
- 
- void __init trap_init(void)
- {
---- a/arch/unicore32/kernel/traps.c
-+++ b/arch/unicore32/kernel/traps.c
-@@ -298,7 +298,6 @@ void abort(void)
- 	/* if that doesn't kill us, halt */
- 	panic("Oops failed to kill thread");
- }
--EXPORT_SYMBOL(abort);
- 
- void __init trap_init(void)
- {
---- a/kernel/exit.c
-+++ b/kernel/exit.c
-@@ -1763,3 +1763,4 @@ __weak void abort(void)
- 	/* if that doesn't kill us, halt */
- 	panic("Oops failed to kill thread");
- }
-+EXPORT_SYMBOL(abort);
diff --git a/target/linux/generic/hack-4.14/207-disable-modorder.patch b/target/linux/generic/hack-4.14/207-disable-modorder.patch
index 4afed16a08..a6b0f67602 100644
--- a/target/linux/generic/hack-4.14/207-disable-modorder.patch
+++ b/target/linux/generic/hack-4.14/207-disable-modorder.patch
@@ -15,7 +15,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
 
 --- a/Makefile
 +++ b/Makefile
-@@ -1212,7 +1212,6 @@ all: modules
+@@ -1213,7 +1213,6 @@ all: modules
  
  PHONY += modules
  modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin
@@ -23,7 +23,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
  	@$(kecho) '  Building modules, stage 2.';
  	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
  
-@@ -1241,7 +1240,6 @@ _modinst_:
+@@ -1242,7 +1241,6 @@ _modinst_:
  		rm -f $(MODLIB)/build ; \
  		ln -s $(CURDIR) $(MODLIB)/build ; \
  	fi
diff --git a/target/linux/generic/hack-4.14/220-gc_sections.patch b/target/linux/generic/hack-4.14/220-gc_sections.patch
index e06ddb80d4..162ee45ff0 100644
--- a/target/linux/generic/hack-4.14/220-gc_sections.patch
+++ b/target/linux/generic/hack-4.14/220-gc_sections.patch
@@ -33,7 +33,7 @@ Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
  # Read KERNELRELEASE from include/config/kernel.release (if it exists)
  KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null)
  KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)
-@@ -784,11 +789,6 @@ ifdef CONFIG_DEBUG_SECTION_MISMATCH
+@@ -785,11 +790,6 @@ ifdef CONFIG_DEBUG_SECTION_MISMATCH
  KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once)
  endif
  
diff --git a/target/linux/generic/hack-4.14/902-debloat_proc.patch b/target/linux/generic/hack-4.14/902-debloat_proc.patch
index e291da5163..c23a8fb616 100644
--- a/target/linux/generic/hack-4.14/902-debloat_proc.patch
+++ b/target/linux/generic/hack-4.14/902-debloat_proc.patch
@@ -327,7 +327,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
  
 --- a/net/core/sock.c
 +++ b/net/core/sock.c
-@@ -3383,6 +3383,8 @@ static __net_initdata struct pernet_oper
+@@ -3380,6 +3380,8 @@ static __net_initdata struct pernet_oper
  
  static int __init proto_init(void)
  {
diff --git a/target/linux/generic/pending-4.14/201-extra_optimization.patch b/target/linux/generic/pending-4.14/201-extra_optimization.patch
index 81f7e2664e..e92b1a10a3 100644
--- a/target/linux/generic/pending-4.14/201-extra_optimization.patch
+++ b/target/linux/generic/pending-4.14/201-extra_optimization.patch
@@ -14,7 +14,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
 
 --- a/Makefile
 +++ b/Makefile
-@@ -638,12 +638,12 @@ KBUILD_CFLAGS	+= $(call cc-disable-warni
+@@ -639,12 +639,12 @@ KBUILD_CFLAGS	+= $(call cc-disable-warni
  
  ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
  KBUILD_CFLAGS	+= $(call cc-option,-Oz,-Os)
diff --git a/target/linux/generic/pending-4.14/491-ubi-auto-create-ubiblock-device-for-rootfs.patch b/target/linux/generic/pending-4.14/491-ubi-auto-create-ubiblock-device-for-rootfs.patch
index f8dc1bcb28..cb2d525610 100644
--- a/target/linux/generic/pending-4.14/491-ubi-auto-create-ubiblock-device-for-rootfs.patch
+++ b/target/linux/generic/pending-4.14/491-ubi-auto-create-ubiblock-device-for-rootfs.patch
@@ -8,7 +8,7 @@ Signed-off-by: Daniel Golle <daniel@makrotopia.org>
 
 --- a/drivers/mtd/ubi/block.c
 +++ b/drivers/mtd/ubi/block.c
-@@ -625,6 +625,44 @@ static void __init ubiblock_create_from_
+@@ -633,6 +633,44 @@ static void __init ubiblock_create_from_
  	}
  }
  
@@ -53,7 +53,7 @@ Signed-off-by: Daniel Golle <daniel@makrotopia.org>
  static void ubiblock_remove_all(void)
  {
  	struct ubiblock *next;
-@@ -655,6 +693,10 @@ int __init ubiblock_init(void)
+@@ -665,6 +703,10 @@ int __init ubiblock_init(void)
  	 */
  	ubiblock_create_from_param();
  
diff --git a/target/linux/generic/pending-4.14/493-ubi-set-ROOT_DEV-to-ubiblock-rootfs-if-unset.patch b/target/linux/generic/pending-4.14/493-ubi-set-ROOT_DEV-to-ubiblock-rootfs-if-unset.patch
index 06cd1b62ac..1bb53ada7f 100644
--- a/target/linux/generic/pending-4.14/493-ubi-set-ROOT_DEV-to-ubiblock-rootfs-if-unset.patch
+++ b/target/linux/generic/pending-4.14/493-ubi-set-ROOT_DEV-to-ubiblock-rootfs-if-unset.patch
@@ -17,9 +17,9 @@ Signed-off-by: Daniel Golle <daniel@makrotopia.org>
  #include "ubi-media.h"
  #include "ubi.h"
 @@ -445,6 +446,15 @@ int ubiblock_create(struct ubi_volume_in
- 	add_disk(dev->gd);
  	dev_info(disk_to_dev(dev->gd), "created from ubi%d:%d(%s)",
  		 dev->ubi_num, dev->vol_id, vi->name);
+ 	mutex_unlock(&devices_mutex);
 +
 +	if (!strcmp(vi->name, "rootfs") &&
 +	    IS_ENABLED(CONFIG_MTD_ROOTFS_ROOT_DEV) &&