From nobody Mon Feb 9 01:26:16 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2D39FC7EE23 for ; Thu, 8 Jun 2023 13:02:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236585AbjFHNCU (ORCPT ); Thu, 8 Jun 2023 09:02:20 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41708 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236617AbjFHNCK (ORCPT ); Thu, 8 Jun 2023 09:02:10 -0400 Received: from mail.loongson.cn (mail.loongson.cn [114.242.206.163]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 516B41712 for ; Thu, 8 Jun 2023 06:02:07 -0700 (PDT) Received: from loongson.cn (unknown [113.200.148.30]) by gateway (Coremail) with SMTP id _____8DxyOlN0YFkGIkAAA--.1882S3; Thu, 08 Jun 2023 21:02:06 +0800 (CST) Received: from localhost.localdomain (unknown [113.200.148.30]) by localhost.localdomain (Coremail) with SMTP id AQAAf8DxFORM0YFkN6MHAA--.24107S2; Thu, 08 Jun 2023 21:02:05 +0800 (CST) From: Qing Zhang To: Huacai Chen , WANG Xuerui Cc: loongarch@lists.linux.dev, linux-kernel@vger.kernel.org, Colin King Subject: [PATCH] LoongArch: Avoid uninitialized alignment_mask Date: Thu, 8 Jun 2023 21:01:57 +0800 Message-Id: <20230608130157.5871-1-zhangqing@loongson.cn> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: AQAAf8DxFORM0YFkN6MHAA--.24107S2 X-CM-SenderInfo: x2kd0wptlqwqxorr0wxvrqhubq/ X-Coremail-Antispam: 1Uk129KBj9xXoWrZFyUAr1UJw47Xr4xZw4rtFc_yoWfXrc_Za 47Jw4DWr48JF10vasFv343WF90v3WrtFnYkF92gr9rX3WrCa45JrWxJ3W5ZrykKFWI9rZx J395u3s0yr1jyosvyTuYvTs0mTUanT9S1TB71UUUUjUqnTZGkaVYY2UrUUUUj1kv1TuYvT s0mT0YCTnIWjqI5I8CrVACY4xI64kE6c02F40Ex7xfYxn0WfASr-VFAUDa7-sFnT9fnUUI cSsGvfJTRUUUb3xYFVCjjxCrM7AC8VAFwI0_Jr0_Gr1l1xkIjI8I6I8E6xAIw20EY4v20x vaj40_Wr0E3s1l1IIY67AEw4v_Jr0_Jr4l8cAvFVAK0II2c7xJM28CjxkF64kEwVA0rcxS w2x7M28EF7xvwVC0I7IYx2IY67AKxVWUCVW8JwA2z4x0Y4vE2Ix0cI8IcVCY1x0267AKxV WUJVW8JwA2z4x0Y4vEx4A2jsIE14v26r4UJVWxJr1l84ACjcxK6I8E87Iv6xkF7I0E14v2 6F4UJVW0owAaw2AFwI0_Jrv_JF1le2I262IYc4CY6c8Ij28IcVAaY2xG8wAqjxCEc2xF0c Ia020Ex4CE44I27wAqx4xG64xvF2IEw4CE5I8CrVC2j2WlYx0E2Ix0cI8IcVAFwI0_JF0_ Jw1lYx0Ex4A2jsIE14v26r4j6F4UMcvjeVCFs4IE7xkEbVWUJVW8JwACjcxG0xvY0x0EwI xGrwCF04k20xvY0x0EwIxGrwCFx2IqxVCFs4IE7xkEbVWUJVW8JwCFI7km07C267AKxVWU XVWUAwC20s026c02F40E14v26r1j6r18MI8I3I0E7480Y4vE14v26r106r1rMI8E67AF67 kF1VAFwI0_JF0_Jw1lIxkGc2Ij64vIr41lIxAIcVC0I7IYx2IY67AKxVWUJVWUCwCI42IY 6xIIjxv20xvEc7CjxVAFwI0_Jr0_Gr1lIxAIcVCF04k26cxKx2IYs7xG6r1j6r1xMIIF0x vEx4A2jsIE14v26r1j6r4UMIIF0xvEx4A2jsIEc7CjxVAFwI0_Jr0_GrUvcSsGvfC2Kfnx nUUI43ZEXa7IU8SAp5UUUUU== Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" The hardware monitoring points for instruction fetching and load/store operations need to align 4 bytes or 1/2/4/8 bytes respectively. Reported-by: Colin King Signed-off-by: Qing Zhang --- arch/loongarch/kernel/hw_breakpoint.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/loongarch/kernel/hw_breakpoint.c b/arch/loongarch/kernel/= hw_breakpoint.c index 2406c95b34cc..021b59c248fa 100644 --- a/arch/loongarch/kernel/hw_breakpoint.c +++ b/arch/loongarch/kernel/hw_breakpoint.c @@ -396,6 +396,8 @@ int hw_breakpoint_arch_parse(struct perf_event *bp, =20 if (hw->ctrl.type !=3D LOONGARCH_BREAKPOINT_EXECUTE) alignment_mask =3D 0x7; + else + alignment_mask =3D 0x3; offset =3D hw->address & alignment_mask; =20 hw->address &=3D ~alignment_mask; --=20 2.20.1