odroidgoa kernel gcc-10 patches

Also sent upstream hardkernel/linux#410

The kernel builds with these patches and aarch64
linux-tools perf also builds

Signed-off-by: Gleb Mazovetskiy <[email protected]>

Author: glebm

board/batocera/rockchip/odroidgoa/linux_patches/0001-BACKPORT-arm64-don-t-zero-in-__copy_from_user-_inato.patch

@@ -0,0 +1,55 @@
+From 02bcb5a7a3dc63346c14fc7aaae3102db548542d Mon Sep 17 00:00:00 2001
+From: Al Viro <[email protected]>
+Date: Sat, 10 Sep 2016 16:50:00 -0400
+Subject: [PATCH] BACKPORT: arm64: don't zero in __copy_from_user{,_inatomic}
+
+Signed-off-by: Al Viro <[email protected]>
+---
+ arch/arm64/include/asm/uaccess.h | 11 +++++++----
+ arch/arm64/lib/copy_from_user.S  |  7 +------
+ 2 files changed, 8 insertions(+), 10 deletions(-)
+
+diff --git a/arch/arm64/include/asm/uaccess.h b/arch/arm64/include/asm/uaccess.h
+index d0919bcb1953..b26ad8507e93 100644
+--- a/arch/arm64/include/asm/uaccess.h
++++ b/arch/arm64/include/asm/uaccess.h
+@@ -410,12 +410,15 @@ static inline unsigned long __must_check __copy_to_user(void __user *to, const v
+ 
+ static inline unsigned long __must_check copy_from_user(void *to, const void __user *from, unsigned long n)
+ {
++	unsigned long res = n;
++
+ 	if (access_ok(VERIFY_READ, from, n)) {
+ 		check_object_size(to, n, false);
+-		n = __arch_copy_from_user(to, from, n);
+-	} else /* security hole - plug it */
+-		memset(to, 0, n);
+-	return n;
++		res = __arch_copy_from_user(to, from, n);
++	}
++	if (unlikely(res))
++		memset(to + (n - res), 0, res);
++	return res;
+ }
+ 
+ static inline unsigned long __must_check copy_to_user(void __user *to, const void *from, unsigned long n)
+diff --git a/arch/arm64/lib/copy_from_user.S b/arch/arm64/lib/copy_from_user.S
+index 683adc358be7..c7a7d9689e8f 100644
+--- a/arch/arm64/lib/copy_from_user.S
++++ b/arch/arm64/lib/copy_from_user.S
+@@ -74,11 +74,6 @@ ENDPROC(__arch_copy_from_user)
+ 
+ 	.section .fixup,"ax"
+ 	.align	2
+-9998:
+-	sub	x0, end, dst
+-9999:
+-	strb	wzr, [dst], #1			// zero remaining buffer space
+-	cmp	dst, end
+-	b.lo	9999b
++9998:	sub	x0, end, dst			// bytes not copied
+ 	ret
+ 	.previous
+-- 
+2.27.0
+

board/batocera/rockchip/odroidgoa/linux_patches/0001-perf-cs-etm-fix-duplicate-def-of-traceid_list.patch

@@ -0,0 +1,44 @@
+From 7cdd201761fea40d7467b97fb9f2e2bcd5ec63c4 Mon Sep 17 00:00:00 2001
+From: Gleb Mazovetskiy <[email protected]>
+Date: Mon, 25 Jan 2021 00:41:55 +0000
+Subject: [PATCH 01/12] perf: cs-etm: fix duplicate def of traceid_list
+
+Backport of 168200b6d6ea0cb5765943ec5da5b8149701f36a upstream
+
+Signed-off-by: Gleb Mazovetskiy <[email protected]>
+---
+ tools/perf/util/cs-etm.c | 3 +++
+ tools/perf/util/cs-etm.h | 3 ---
+ 2 files changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/tools/perf/util/cs-etm.c b/tools/perf/util/cs-etm.c
+index ca93257a6cb7..ee23fd37f241 100644
+--- a/tools/perf/util/cs-etm.c
++++ b/tools/perf/util/cs-etm.c
+@@ -91,6 +91,9 @@ struct cs_etm_queue {
+         bool                    kernel_mapped;
+ };
+ 
++/* RB tree for quick conversion between traceID and metadata pointers */
++static struct intlist *traceid_list;
++
+ static int cs_etm__get_trace(struct cs_etm_buffer *buff, struct cs_etm_queue *etmq);
+ static int cs_etm__update_queues(struct cs_etm_auxtrace *);
+ static int cs_etm__process_queues(struct cs_etm_auxtrace *, u64);
+diff --git a/tools/perf/util/cs-etm.h b/tools/perf/util/cs-etm.h
+index ec6ff78f1905..1f785a92fb20 100644
+--- a/tools/perf/util/cs-etm.h
++++ b/tools/perf/util/cs-etm.h
+@@ -65,9 +65,6 @@ enum {
+ 	CS_ETMV4_PRIV_MAX,
+ };
+ 
+-/* RB tree for quick conversion between traceID and CPUs */
+-struct intlist *traceid_list;
+-
+ #define KiB(x) ((x) * 1024)
+ #define MiB(x) ((x) * 1024 * 1024)
+ 
+-- 
+2.27.0
+

board/batocera/rockchip/odroidgoa/linux_patches/0002-perf-bench-Share-some-global-variables-to-fix-build-.patch

@@ -0,0 +1,134 @@
+From 62b75df5f013d9f7b5b47ff5369dd4b3143ab965 Mon Sep 17 00:00:00 2001
+From: Gleb Mazovetskiy <[email protected]>
+Date: Mon, 25 Jan 2021 00:52:10 +0000
+Subject: [PATCH 02/12] perf bench: Share some global variables to fix build
+ with gcc 10
+
+Based on https://git.yoctoproject.org/cgit/cgit.cgi/meta-arm/tree/meta-arm-bsp/recipes-kernel/linux/linux-yocto-5.3/0003-perf-bench-Share-some-global-variables-to-fix-build-.patch
+
+Signed-off-by: Gleb Mazovetskiy <[email protected]>
+---
+ tools/perf/bench/bench.h         |  4 ++++
+ tools/perf/bench/futex-hash.c    | 12 ++++++------
+ tools/perf/bench/futex-lock-pi.c | 11 +++++------
+ 3 files changed, 15 insertions(+), 12 deletions(-)
+
+diff --git a/tools/perf/bench/bench.h b/tools/perf/bench/bench.h
+index a50df86f2b9b..e758896f4995 100644
+--- a/tools/perf/bench/bench.h
++++ b/tools/perf/bench/bench.h
+@@ -1,6 +1,10 @@
+ #ifndef BENCH_H
+ #define BENCH_H
+ 
++#include <sys/time.h>
++
++extern struct timeval bench__start, bench__end, bench__runtime;
++
+ /*
+  * The madvise transparent hugepage constants were added in glibc
+  * 2.13. For compatibility with older versions of glibc, define these
+diff --git a/tools/perf/bench/futex-hash.c b/tools/perf/bench/futex-hash.c
+index fc9bebd2cca0..80313b40d324 100644
+--- a/tools/perf/bench/futex-hash.c
++++ b/tools/perf/bench/futex-hash.c
+@@ -28,7 +28,7 @@ static unsigned int nfutexes = 1024;
+ static bool fshared = false, done = false, silent = false;
+ static int futex_flag = 0;
+ 
+-struct timeval start, end, runtime;
++struct timeval bench__start, bench__end, bench__runtime;
+ static pthread_mutex_t thread_lock;
+ static unsigned int threads_starting;
+ static struct stats throughput_stats;
+@@ -92,8 +92,8 @@ static void toggle_done(int sig __maybe_unused,
+ {
+ 	/* inform all threads that we're done for the day */
+ 	done = true;
+-	gettimeofday(&end, NULL);
+-	timersub(&end, &start, &runtime);
++	gettimeofday(&bench__end, NULL);
++	timersub(&bench__end, &bench__start, &bench__runtime);
+ }
+ 
+ static void print_summary(void)
+@@ -103,7 +103,7 @@ static void print_summary(void)
+ 
+ 	printf("%sAveraged %ld operations/sec (+- %.2f%%), total secs = %d\n",
+ 	       !silent ? "\n" : "", avg, rel_stddev_stats(stddev, avg),
+-	       (int) runtime.tv_sec);
++	       (int) bench__runtime.tv_sec);
+ }
+ 
+ int bench_futex_hash(int argc, const char **argv,
+@@ -148,7 +148,7 @@ int bench_futex_hash(int argc, const char **argv,
+ 
+ 	threads_starting = nthreads;
+ 	pthread_attr_init(&thread_attr);
+-	gettimeofday(&start, NULL);
++	gettimeofday(&bench__start, NULL);
+ 	for (i = 0; i < nthreads; i++) {
+ 		worker[i].tid = i;
+ 		worker[i].futex = calloc(nfutexes, sizeof(*worker[i].futex));
+@@ -191,7 +191,7 @@ int bench_futex_hash(int argc, const char **argv,
+ 	pthread_mutex_destroy(&thread_lock);
+ 
+ 	for (i = 0; i < nthreads; i++) {
+-		unsigned long t = worker[i].ops/runtime.tv_sec;
++		unsigned long t = worker[i].ops/bench__runtime.tv_sec;
+ 		update_stats(&throughput_stats, t);
+ 		if (!silent) {
+ 			if (nfutexes == 1)
+diff --git a/tools/perf/bench/futex-lock-pi.c b/tools/perf/bench/futex-lock-pi.c
+index bc6a16adbca8..8d0f60456a95 100644
+--- a/tools/perf/bench/futex-lock-pi.c
++++ b/tools/perf/bench/futex-lock-pi.c
+@@ -29,7 +29,6 @@ static bool silent = false, multi = false;
+ static bool done = false, fshared = false;
+ static unsigned int ncpus, nthreads = 0;
+ static int futex_flag = 0;
+-struct timeval start, end, runtime;
+ static pthread_mutex_t thread_lock;
+ static unsigned int threads_starting;
+ static struct stats throughput_stats;
+@@ -56,7 +55,7 @@ static void print_summary(void)
+ 
+ 	printf("%sAveraged %ld operations/sec (+- %.2f%%), total secs = %d\n",
+ 	       !silent ? "\n" : "", avg, rel_stddev_stats(stddev, avg),
+-	       (int) runtime.tv_sec);
++	       (int) bench__runtime.tv_sec);
+ }
+ 
+ static void toggle_done(int sig __maybe_unused,
+@@ -65,8 +64,8 @@ static void toggle_done(int sig __maybe_unused,
+ {
+ 	/* inform all threads that we're done for the day */
+ 	done = true;
+-	gettimeofday(&end, NULL);
+-	timersub(&end, &start, &runtime);
++	gettimeofday(&bench__end, NULL);
++	timersub(&bench__end, &bench__start, &bench__runtime);
+ }
+ 
+ static void *workerfn(void *arg)
+@@ -172,7 +171,7 @@ int bench_futex_lock_pi(int argc, const char **argv,
+ 
+ 	threads_starting = nthreads;
+ 	pthread_attr_init(&thread_attr);
+-	gettimeofday(&start, NULL);
++	gettimeofday(&bench__start, NULL);
+ 
+ 	create_threads(worker, thread_attr);
+ 	pthread_attr_destroy(&thread_attr);
+@@ -198,7 +197,7 @@ int bench_futex_lock_pi(int argc, const char **argv,
+ 	pthread_mutex_destroy(&thread_lock);
+ 
+ 	for (i = 0; i < nthreads; i++) {
+-		unsigned long t = worker[i].ops/runtime.tv_sec;
++		unsigned long t = worker[i].ops/bench__runtime.tv_sec;
+ 
+ 		update_stats(&throughput_stats, t);
+ 		if (!silent)
+-- 
+2.27.0
+

board/batocera/rockchip/odroidgoa/linux_patches/0003-perf-Make-perf-able-to-build-with-latest-libbfd.patch

@@ -0,0 +1,51 @@
+From 89b28cc5ae940970fa4530722c1419dd728a6e15 Mon Sep 17 00:00:00 2001
+From: Gleb Mazovetskiy <[email protected]>
+Date: Mon, 25 Jan 2021 00:57:06 +0000
+Subject: [PATCH 03/12] perf: Make perf able to build with latest libbfd
+
+Based on http://lore.kernel.org/lkml/[email protected]
+
+Signed-off-by: Gleb Mazovetskiy <[email protected]>
+---
+ tools/perf/util/srcline.c | 16 +++++++++++++++-
+ 1 file changed, 15 insertions(+), 1 deletion(-)
+
+diff --git a/tools/perf/util/srcline.c b/tools/perf/util/srcline.c
+index b4db3f48e3b0..2853d4728ab9 100644
+--- a/tools/perf/util/srcline.c
++++ b/tools/perf/util/srcline.c
+@@ -86,16 +86,30 @@ static void find_address_in_section(bfd *abfd, asection *section, void *data)
+ 	bfd_vma pc, vma;
+ 	bfd_size_type size;
+ 	struct a2l_data *a2l = data;
++	flagword flags;
+ 
+ 	if (a2l->found)
+ 		return;
+ 
+-	if ((bfd_get_section_flags(abfd, section) & SEC_ALLOC) == 0)
++#ifdef bfd_get_section_flags
++	flags = bfd_get_section_flags(abfd, section);
++#else
++	flags = bfd_section_flags(section);
++#endif
++	if ((flags & SEC_ALLOC) == 0)
+ 		return;
+ 
+ 	pc = a2l->addr;
++#ifdef bfd_get_section_vma
+ 	vma = bfd_get_section_vma(abfd, section);
++#else
++	vma = bfd_section_vma(section);
++#endif
++#ifdef bfd_get_section_size
+ 	size = bfd_get_section_size(section);
++#else
++	size = bfd_section_size(section);
++#endif
+ 
+ 	if (pc < vma || pc >= vma + size)
+ 		return;
+-- 
+2.27.0
+

board/batocera/rockchip/odroidgoa/linux_patches/0004-tools-lib-api-fs-Fix-gcc9-stringop-truncation-compil.patch

@@ -0,0 +1,63 @@
+From 186f5ff69e29e0b1add523bb03462a690b2348c0 Mon Sep 17 00:00:00 2001
+From: Andrey Zhizhikin <[email protected]>
+Date: Wed, 11 Dec 2019 08:01:09 +0000
+Subject: [PATCH 04/12] tools lib api fs: Fix gcc9 stringop-truncation
+ compilation error
+
+GCC9 introduced string hardening mechanisms, which exhibits the error
+during fs api compilation:
+
+error: '__builtin_strncpy' specified bound 4096 equals destination size
+[-Werror=stringop-truncation]
+
+This comes when the length of copy passed to strncpy is is equal to
+destination size, which could potentially lead to buffer overflow.
+
+There is a need to mitigate this potential issue by limiting the size of
+destination by 1 and explicitly terminate the destination with NULL.
+
+Signed-off-by: Andrey Zhizhikin <[email protected]>
+Reviewed-by: Petr Mladek <[email protected]>
+Acked-by: Jiri Olsa <[email protected]>
+Cc: Alexei Starovoitov <[email protected]>
+Cc: Andrii Nakryiko <[email protected]>
+Cc: Daniel Borkmann <[email protected]>
+Cc: Kefeng Wang <[email protected]>
+Cc: Martin KaFai Lau <[email protected]>
+Cc: Petr Mladek <[email protected]>
+Cc: Sergey Senozhatsky <[email protected]>
+Cc: Song Liu <[email protected]>
+Cc: Yonghong Song <[email protected]>
+Cc: [email protected]
+Cc: [email protected]
+Link: http://lore.kernel.org/lkml/[email protected]
+Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
+---
+ tools/lib/api/fs/fs.c | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+diff --git a/tools/lib/api/fs/fs.c b/tools/lib/api/fs/fs.c
+index 459599d1b6c4..58f05748dd39 100644
+--- a/tools/lib/api/fs/fs.c
++++ b/tools/lib/api/fs/fs.c
+@@ -179,6 +179,7 @@ static bool fs__env_override(struct fs *fs)
+ 	size_t name_len = strlen(fs->name);
+ 	/* name + "_PATH" + '\0' */
+ 	char upper_name[name_len + 5 + 1];
++
+ 	memcpy(upper_name, fs->name, name_len);
+ 	mem_toupper(upper_name, name_len);
+ 	strcpy(&upper_name[name_len], "_PATH");
+@@ -188,7 +189,8 @@ static bool fs__env_override(struct fs *fs)
+ 		return false;
+ 
+ 	fs->found = true;
+-	strncpy(fs->path, override_path, sizeof(fs->path));
++	strncpy(fs->path, override_path, sizeof(fs->path) - 1);
++	fs->path[sizeof(fs->path) - 1] = '\0';
+ 	return true;
+ }
+ 
+-- 
+2.27.0
+