From nobody Tue Dec 2 00:03:40 2025 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8A32A2D0C72; Tue, 25 Nov 2025 08:26:18 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764059178; cv=none; b=IuTM9vQToYjnPraMrYgTV+JdVvEKAQeXQp8O8Q5Vs8uGQstcKHzpGkJKv/GbKZRcsw5G00W/mLz3fDgqoLbjAfxlmiIUjGHpOAdbujmiLZWp4UFeBKp/g2/efBOKqXqcOZvnayirw7LcdL8+rsq9mBYKReFLIXiXnYaZdgsf1F8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764059178; c=relaxed/simple; bh=A8USku3cF+CtOrBNc8ByQNPSjsw8wSqV1XtkyoQUkvI=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=SZp6wEQKDXNVM/twj8cInJ8MHvTT1E0gRhMx2aAEHHzRm6JNU86X83vQxuUsWORqlkRcTUgGLh8KjnW6uWs2IL5fUUiLkG1AmneBdzeOaH/S5PJaHqo7VzbrzuGazXFQr/7wEE29wUl0T32p3CB8JNXtIqZxFgoPgTEaWGXiwRY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8F1E4C4CEF1; Tue, 25 Nov 2025 08:26:15 +0000 (UTC) From: Huacai Chen To: Huacai Chen Cc: loongarch@lists.linux.dev, Xuefeng Li , Guo Ren , Xuerui Wang , Jiaxun Yang , linux-kernel@vger.kernel.org, Huacai Chen , stable@vger.kernel.org, kernel test robot , Rui Wang Subject: [PATCH] LoongArch: Fix build errors for CONFIG_RANDSTRUCT Date: Tue, 25 Nov 2025 16:25:59 +0800 Message-ID: <20251125082559.488612-1-chenhuacai@loongson.cn> X-Mailer: git-send-email 2.47.3 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" When CONFIG_RANDSTRUCT enabled, members of task_struct are randomized. There is a chance that TASK_STACK_CANARY be out of 12bit immediate's range and causes build errors. TASK_STACK_CANARY is naturally aligned, so fix it by replacing ld.d/st.d with ldptr.d/stptr.d which have 14bit immediates. Cc: stable@vger.kernel.org Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202511240656.0NaPcJs1-lkp@int= el.com/ Suggested-by: Rui Wang Signed-off-by: Huacai Chen --- arch/loongarch/kernel/switch.S | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/loongarch/kernel/switch.S b/arch/loongarch/kernel/switch.S index 9c23cb7e432f..3007e909e0d8 100644 --- a/arch/loongarch/kernel/switch.S +++ b/arch/loongarch/kernel/switch.S @@ -25,8 +25,8 @@ SYM_FUNC_START(__switch_to) stptr.d a4, a0, THREAD_SCHED_CFA #if defined(CONFIG_STACKPROTECTOR) && !defined(CONFIG_SMP) la t7, __stack_chk_guard - LONG_L t8, a1, TASK_STACK_CANARY - LONG_S t8, t7, 0 + ldptr.d t8, a1, TASK_STACK_CANARY + stptr.d t8, t7, 0 #endif move tp, a2 cpu_restore_nonscratch a1 --=20 2.47.3