From nobody Wed Jun 17 05:16:05 2026 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 037E031F995; Wed, 22 Apr 2026 17:43:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776879791; cv=none; b=qMIFmwd1Cmwx77lzEQnqiACX5TBzTJGPdqe5YNuEAJ9HyViQV9LkjG2kmmRLXAMbqjHadkK14NSfjSwKyTiW/4omBwterB+RhgXQn4NWGUdA/VqVvq/VgnxVLF69DJQCBjY2V35BX6yi4J/XdoNyb5WsD7frggU3vbCKiYvW9n4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776879791; c=relaxed/simple; bh=OD5QrNLGVy+fEi3oiasM4441515XOrsFM0gTO7JatFM=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:To:Cc; b=prwJxmeyW+Ln222BQmcOAYccW7M93nUqM1cXFKakgg+Mz37rn36C4lYL/lBx3rc5oYvE41312t6T5Nds1AFTUJq32e44ZBLk0bhvpd+7J7hT1flnHxmRTjrxNnLP6oNjfAeBD9hUcDIWSgfK6JlJkCnb4wxLgWHHM4FTP1QvGvc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; dkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com header.b=viOR4vre; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com header.b="viOR4vre" Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id C28361E4D; Wed, 22 Apr 2026 10:43:03 -0700 (PDT) Received: from e132581.arm.com (e132581.arm.com [10.1.196.87]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 15CAF3F641; Wed, 22 Apr 2026 10:43:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=arm.com; s=foss; t=1776879789; bh=OD5QrNLGVy+fEi3oiasM4441515XOrsFM0gTO7JatFM=; h=From:Date:Subject:To:Cc:From; b=viOR4vre1hbR8DXudh803GvGFD1B3tYM07XGjMnQPgaQUuwIRv/J6THMaZoh8KIY5 b3hVgQGy/1oazano3iRqt5l+lr2SI6jAz5hk2AGWtQgLikmumSssq0nrPW+rotF5Rq xWW6e015aZGQ8x1lE0VAdAA5sZElpTsLJBVzR/88= From: Leo Yan Date: Wed, 22 Apr 2026 18:42:54 +0100 Subject: [PATCH v2] kselftest/arm64: Fix build failure with GCC-15 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260422-selftests_arm64_gcc15-v2-1-c0134de8838a@arm.com> X-B4-Tracking: v=1; b=H4sIAJ0I6WkC/4WNwQrCMAxAf2X0bKUpbXWe/A8Zo7TpVnCbNGMoo /9uN8SjktNLeC8rI0wRiV2qlSVcIsVpLCAPFXO9HTvk0RdmUkgjlAROeA8z0kytTYNRbeccaA4 6mGC8OHl/ZsV9JAzxuXdvTeE+0jyl1/5mgW37r7gALxMMSuUAtK2v5Xp007DlP6785QpfQ41WW 6fD121yzm8ylrh39AAAAA== X-Change-ID: 20260421-selftests_arm64_gcc15-15f6f6d07dd8 To: Catalin Marinas , Will Deacon , Shuah Khan , Mark Brown , Thiago Jung Bauermann Cc: linux-arm-kernel@lists.infradead.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, Leo Yan X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1776879788; l=1657; i=leo.yan@arm.com; s=20250604; h=from:subject:message-id; bh=OD5QrNLGVy+fEi3oiasM4441515XOrsFM0gTO7JatFM=; b=BHlrn2gPuJk7Hm7WAa21pX6Bkogi8AxrTHk3EGTk6oYFKUUBAAHbQOP4/N5dhH88CQEbfP0ed nx7BJMxIuX2BfkFIYNWWwL/Sv5a+fBgeElNmG3MVZvypYZGfVfhYi4D X-Developer-Key: i=leo.yan@arm.com; a=ed25519; pk=k4BaDbvkCXzBFA7Nw184KHGP5thju8lKqJYIrOWxDhI= Building on Debian sid with GCC 15 fails: CC libc-gcs libc-gcs.c: In function 'ptrace_read_write': libc-gcs.c:142:25: error: storage size of 'child_gcs' isn't known 142 | struct user_gcs child_gcs; | ^~~~~~~~~ libc-gcs.c:142:25: warning: unused variable 'child_gcs' [-Wunused-variabl= e] For GCC-15, NT_ARM_GCS is defined in the libc header, causing gcs-util.h to skip its fallback definition of struct user_gcs. This leads to the compiler error. Fix this by including to provide the proper definition. Fixes: a505a52b4e29 ("kselftest/arm64: Add a GCS test program built with th= e system libc") Signed-off-by: Leo Yan Reviewed-by: Mark Brown --- Changes in v2: - Refined commit log (Mark Brown). - Moving header to gcs-util.h (Mark Brown). - Link to v1: https://lore.kernel.org/r/20260422-selftests_arm64_gcc15-v1-1= -0d919ea5ac5f@arm.com --- tools/testing/selftests/arm64/gcs/gcs-util.h | 1 + 1 file changed, 1 insertion(+) diff --git a/tools/testing/selftests/arm64/gcs/gcs-util.h b/tools/testing/s= elftests/arm64/gcs/gcs-util.h index c99a6b39ac147b4efbc9b5fbadb43daf4da2c85e..f583d4dbd0bfd964e08cf40b395= 1664c70bb031a 100644 --- a/tools/testing/selftests/arm64/gcs/gcs-util.h +++ b/tools/testing/selftests/arm64/gcs/gcs-util.h @@ -7,6 +7,7 @@ #define GCS_UTIL_H =20 #include +#include =20 #ifndef __NR_map_shadow_stack #define __NR_map_shadow_stack 453 --- base-commit: 4ee64205ffaa587e8114d84a67ac721399ccb369 change-id: 20260421-selftests_arm64_gcc15-15f6f6d07dd8 Best regards, --=20 Leo Yan