From 047528549ce76842a14c8f79fbf7dd99a72a6dc1 Mon Sep 17 00:00:00 2001
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: Mon, 8 Feb 2021 09:53:41 +0100
Subject: [PATCH] 4.19-stable patches

added patches:
	elfcore-fix-building-with-clang.patch
---
 .../elfcore-fix-building-with-clang.patch     | 110 ++++++++++++++++++
 queue-4.19/series                             |   1 +
 2 files changed, 111 insertions(+)
 create mode 100644 queue-4.19/elfcore-fix-building-with-clang.patch

diff --git a/queue-4.19/elfcore-fix-building-with-clang.patch b/queue-4.19/elfcore-fix-building-with-clang.patch
new file mode 100644
index 00000000000..705c7b573cb
--- /dev/null
+++ b/queue-4.19/elfcore-fix-building-with-clang.patch
@@ -0,0 +1,110 @@
+From 6e7b64b9dd6d96537d816ea07ec26b7dedd397b9 Mon Sep 17 00:00:00 2001
+From: Arnd Bergmann <arnd@arndb.de>
+Date: Fri, 11 Dec 2020 13:36:46 -0800
+Subject: elfcore: fix building with clang
+
+From: Arnd Bergmann <arnd@arndb.de>
+
+commit 6e7b64b9dd6d96537d816ea07ec26b7dedd397b9 upstream.
+
+kernel/elfcore.c only contains weak symbols, which triggers a bug with
+clang in combination with recordmcount:
+
+  Cannot find symbol for section 2: .text.
+  kernel/elfcore.o: failed
+
+Move the empty stubs into linux/elfcore.h as inline functions.  As only
+two architectures use these, just use the architecture specific Kconfig
+symbols to key off the declaration.
+
+Link: https://lkml.kernel.org/r/20201204165742.3815221-2-arnd@kernel.org
+Signed-off-by: Arnd Bergmann <arnd@arndb.de>
+Cc: Nathan Chancellor <natechancellor@gmail.com>
+Cc: Nick Desaulniers <ndesaulniers@google.com>
+Cc: Barret Rhoden <brho@google.com>
+Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
+Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ include/linux/elfcore.h |   22 ++++++++++++++++++++++
+ kernel/Makefile         |    1 -
+ kernel/elfcore.c        |   26 --------------------------
+ 3 files changed, 22 insertions(+), 27 deletions(-)
+ delete mode 100644 kernel/elfcore.c
+
+--- a/include/linux/elfcore.h
++++ b/include/linux/elfcore.h
+@@ -58,6 +58,7 @@ static inline int elf_core_copy_task_xfp
+ }
+ #endif
+ 
++#if defined(CONFIG_UM) || defined(CONFIG_IA64)
+ /*
+  * These functions parameterize elf_core_dump in fs/binfmt_elf.c to write out
+  * extra segments containing the gate DSO contents.  Dumping its
+@@ -72,5 +73,26 @@ elf_core_write_extra_phdrs(struct coredu
+ extern int
+ elf_core_write_extra_data(struct coredump_params *cprm);
+ extern size_t elf_core_extra_data_size(void);
++#else
++static inline Elf_Half elf_core_extra_phdrs(void)
++{
++	return 0;
++}
++
++static inline int elf_core_write_extra_phdrs(struct coredump_params *cprm, loff_t offset)
++{
++	return 1;
++}
++
++static inline int elf_core_write_extra_data(struct coredump_params *cprm)
++{
++	return 1;
++}
++
++static inline size_t elf_core_extra_data_size(void)
++{
++	return 0;
++}
++#endif
+ 
+ #endif /* _LINUX_ELFCORE_H */
+--- a/kernel/Makefile
++++ b/kernel/Makefile
+@@ -92,7 +92,6 @@ obj-$(CONFIG_TASK_DELAY_ACCT) += delayac
+ obj-$(CONFIG_TASKSTATS) += taskstats.o tsacct.o
+ obj-$(CONFIG_TRACEPOINTS) += tracepoint.o
+ obj-$(CONFIG_LATENCYTOP) += latencytop.o
+-obj-$(CONFIG_ELFCORE) += elfcore.o
+ obj-$(CONFIG_FUNCTION_TRACER) += trace/
+ obj-$(CONFIG_TRACING) += trace/
+ obj-$(CONFIG_TRACE_CLOCK) += trace/
+--- a/kernel/elfcore.c
++++ /dev/null
+@@ -1,26 +0,0 @@
+-// SPDX-License-Identifier: GPL-2.0
+-#include <linux/elf.h>
+-#include <linux/fs.h>
+-#include <linux/mm.h>
+-#include <linux/binfmts.h>
+-#include <linux/elfcore.h>
+-
+-Elf_Half __weak elf_core_extra_phdrs(void)
+-{
+-	return 0;
+-}
+-
+-int __weak elf_core_write_extra_phdrs(struct coredump_params *cprm, loff_t offset)
+-{
+-	return 1;
+-}
+-
+-int __weak elf_core_write_extra_data(struct coredump_params *cprm)
+-{
+-	return 1;
+-}
+-
+-size_t __weak elf_core_extra_data_size(void)
+-{
+-	return 0;
+-}
diff --git a/queue-4.19/series b/queue-4.19/series
index 56a81896831..4ecd8fe072f 100644
--- a/queue-4.19/series
+++ b/queue-4.19/series
@@ -1,6 +1,7 @@
 usb-serial-cp210x-add-pid-vid-for-wsda-200-usb.patch
 usb-serial-cp210x-add-new-vid-pid-for-supporting-teraoka-ad2000.patch
 usb-serial-option-adding-support-for-cinterion-mv31.patch
+elfcore-fix-building-with-clang.patch
 input-i8042-unbreak-pegatron-c15b.patch
 rxrpc-fix-deadlock-around-release-of-dst-cached-on-u.patch
 arm64-dts-ls1046a-fix-dcfg-address-range.patch
-- 
2.47.3