linux-kernel - [GIT PULL] core/urgent fix

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Message-ID: <aNaXicdHkJpTu6-P@gmail.com>
Date: Fri, 26 Sep 2025 15:39:21 +0200
From: Ingo Molnar <mingo@...nel.org>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Nathan Chancellor <nathan@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: [GIT PULL] core/urgent fix

Linus,

Please pull the latest core/urgent Git tree from:

   git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git core-urgent-2025-09-26

   # HEAD: e2ffa15b9baa447e444d654ffd47123ba6443ae4 kbuild: Disable CC_HAS_ASM_GOTO_OUTPUT on clang < 17

Fix a CONFIG_CC_HAS_ASM_GOTO_OUTPUT=y bug on older Clang versions.

 Thanks,

	Ingo

------------------>
Thomas Gleixner (1):
      kbuild: Disable CC_HAS_ASM_GOTO_OUTPUT on clang < 17


 init/Kconfig | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/init/Kconfig b/init/Kconfig
index e3eb63eadc87..ecddb94db8dc 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -99,7 +99,10 @@ config GCC_ASM_GOTO_OUTPUT_BROKEN
 config CC_HAS_ASM_GOTO_OUTPUT
 	def_bool y
 	depends on !GCC_ASM_GOTO_OUTPUT_BROKEN
+	# Detect basic support
 	depends on $(success,echo 'int foo(int x) { asm goto ("": "=r"(x) ::: bar); return x; bar: return 0; }' | $(CC) -x c - -c -o /dev/null)
+	# Detect clang (< v17) scoped label issues
+	depends on $(success,echo 'void b(void **);void* c(void);int f(void){{asm goto("jmp %l0"::::l0);return 0;l0:return 1;}void *x __attribute__((cleanup(b)))=c();{asm goto("jmp %l0"::::l1);return 2;l1:return 3;}}' | $(CC) -x c - -c -o /dev/null)
 
 config CC_HAS_ASM_GOTO_TIED_OUTPUT
 	depends on CC_HAS_ASM_GOTO_OUTPUT