[PATCH AUTOSEL 5.4 1/3] sched: Fix KCSAN noinstr violation

[PATCH AUTOSEL 5.4 1/3] sched: Fix KCSAN noinstr violation

[Sasha Levin]

From: Josh Poimboeuf <jpoimboe@kernel.org>

[ Upstream commit e0b081d17a9f4e5c0cbb0e5fbeb1abe3de0f7e4e ]

With KCSAN enabled, end_of_stack() can get out-of-lined.  Force it
inline.

Fixes the following warnings:

  vmlinux.o: warning: objtool: check_stackleak_irqoff+0x2b: call to end_of_stack() leaves .noinstr.text section

Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/cc1b4d73d3a428a00d206242a68fdf99a934ca7b.1681320026.git.jpoimboe@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 include/linux/sched/task_stack.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/sched/task_stack.h b/include/linux/sched/task_stack.h
index 1009b6b5ce403..879a5c8f930b6 100644
--- a/include/linux/sched/task_stack.h
+++ b/include/linux/sched/task_stack.h
@@ -23,7 +23,7 @@ static __always_inline void *task_stack_page(const struct task_struct *task)
 
 #define setup_thread_stack(new,old)	do { } while(0)
 
-static inline unsigned long *end_of_stack(const struct task_struct *task)
+static __always_inline unsigned long *end_of_stack(const struct task_struct *task)
 {
 #ifdef CONFIG_STACK_GROWSUP
 	return (unsigned long *)((unsigned long)task->stack + THREAD_SIZE) - 1;
-- 
2.39.2

[PATCH AUTOSEL 5.4 2/3] powerpc/fsl_uli1575: Allow to disable FSL_ULI1575 support

[Sasha Levin]

From: Pali Rohár <pali@kernel.org>

[ Upstream commit 22fdf79171e8509db54599fd2c05ef0022ee83f5 ]

ULI1575 PCIe south bridge exists only on some Freescale boards. Allow to
disable CONFIG_FSL_ULI1575 symbol when it is not explicitly selected and
only implied. This is achieved by marking symbol as visible by providing
short description. Also adds dependency for this symbol to prevent enabling
it on platforms on which driver does not compile.

Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20230409000812.18904-7-pali@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/powerpc/platforms/Kconfig | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/arch/powerpc/platforms/Kconfig b/arch/powerpc/platforms/Kconfig
index 18792a5b003a0..d239667ea72f6 100644
--- a/arch/powerpc/platforms/Kconfig
+++ b/arch/powerpc/platforms/Kconfig
@@ -269,7 +269,9 @@ config CPM2
 	  on it (826x, 827x, 8560).
 
 config FSL_ULI1575
-	bool
+	bool "ULI1575 PCIe south bridge support"
+	depends on FSL_SOC_BOOKE || PPC_86xx
+	select FSL_PCI
 	select GENERIC_ISA_DMA
 	help
 	  Supports for the ULI1575 PCIe south bridge that exists on some
-- 
2.39.2

[PATCH AUTOSEL 5.4 3/3] recordmcount: Fix memory leaks in the uwrite function

[Sasha Levin]

From: Hao Zeng <zenghao@kylinos.cn>

[ Upstream commit fa359d068574d29e7d2f0fdd0ebe4c6a12b5cfb9 ]

Common realloc mistake: 'file_append' nulled but not freed upon failure

Link: https://lkml.kernel.org/r/20230426010527.703093-1-zenghao@kylinos.cn

Signed-off-by: Hao Zeng <zenghao@kylinos.cn>
Suggested-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 scripts/recordmcount.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/scripts/recordmcount.c b/scripts/recordmcount.c
index cce12e1971d85..ec692af8ce9eb 100644
--- a/scripts/recordmcount.c
+++ b/scripts/recordmcount.c
@@ -102,6 +102,7 @@ static ssize_t uwrite(void const *const buf, size_t const count)
 {
 	size_t cnt = count;
 	off_t idx = 0;
+	void *p = NULL;
 
 	file_updated = 1;
 
@@ -109,7 +110,10 @@ static ssize_t uwrite(void const *const buf, size_t const count)
 		off_t aoffset = (file_ptr + count) - file_end;
 
 		if (aoffset > file_append_size) {
-			file_append = realloc(file_append, aoffset);
+			p = realloc(file_append, aoffset);
+			if (!p)
+				free(file_append);
+			file_append = p;
 			file_append_size = aoffset;
 		}
 		if (!file_append) {
-- 
2.39.2