From nobody Mon Nov 25 23:50:13 2024 Received: from dggsgout12.his.huawei.com (dggsgout12.his.huawei.com [45.249.212.56]) (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 940A61D8A08; Thu, 24 Oct 2024 13:25:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.56 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729776315; cv=none; b=Shrt2qN8tlXXXbLCeyBXYUAyMQuG4OBtmYivPUj1H6uM3ph2WJk9F6cIUkSCuyR62okkZgzgaf5S2NNju97cJjkhgMSGUmiaP/bmpnY3xXeBA+frORGhEeoH2p41CxJWP+M0ghLjocJeR2DVdsv00bY4S+5F/PlFhRehS8lUhB8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729776315; c=relaxed/simple; bh=uc1LQeotcsNDpPS9/9fVNAcor0v2+3tE0pf/V0nNm/c=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=QzFS1WJ4CyhC3vG+aI0EUd30Q1qGtOrQ/sJnNRPD7g+Y5z9ewUAkhTpqaV9qiGGptKKBFhvUasE+mnd/i1eTbHJ1COQgvSwaennHgWkYE05OkIZTXO/1+eiDz2tzHAGysDGdpYYXfb+8muI7B9Y/+jag7YszSa2Xi/n9K39IV8w= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=huaweicloud.com; spf=pass smtp.mailfrom=huaweicloud.com; arc=none smtp.client-ip=45.249.212.56 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=huaweicloud.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huaweicloud.com Received: from mail.maildlp.com (unknown [172.19.163.216]) by dggsgout12.his.huawei.com (SkyGuard) with ESMTP id 4XZ68f45Szz4f3jsB; Thu, 24 Oct 2024 21:24:50 +0800 (CST) Received: from mail02.huawei.com (unknown [10.116.40.128]) by mail.maildlp.com (Postfix) with ESMTP id 0BE5F1A0194; Thu, 24 Oct 2024 21:25:08 +0800 (CST) Received: from huaweicloud.com (unknown [10.175.104.67]) by APP4 (Coremail) with SMTP id gCh0CgD3LMmxShpnmfz6Ew--.42902S4; Thu, 24 Oct 2024 21:25:07 +0800 (CST) From: Yu Kuai To: stable@vger.kernel.org, gregkh@linuxfoundation.org, harry.wentland@amd.com, sunpeng.li@amd.com, Rodrigo.Siqueira@amd.com, alexander.deucher@amd.com, christian.koenig@amd.com, Xinhui.Pan@amd.com, airlied@gmail.com, daniel@ffwll.ch, viro@zeniv.linux.org.uk, brauner@kernel.org, Liam.Howlett@oracle.com, akpm@linux-foundation.org, hughd@google.com, willy@infradead.org, sashal@kernel.org, srinivasan.shanmugam@amd.com, chiahsuan.chung@amd.com, mingo@kernel.org, mgorman@techsingularity.net, yukuai3@huawei.com, chengming.zhou@linux.dev, zhangpeng.00@bytedance.com, chuck.lever@oracle.com Cc: amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, maple-tree@lists.infradead.org, linux-mm@kvack.org, yukuai1@huaweicloud.com, yi.zhang@huawei.com, yangerkun@huawei.com Subject: [PATCH 6.6 16/28] Revert "maple_tree: correct tree corruption on spanning store" Date: Thu, 24 Oct 2024 21:22:13 +0800 Message-Id: <20241024132225.2271667-1-yukuai1@huaweicloud.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20241024132009.2267260-1-yukuai1@huaweicloud.com> References: <20241024132009.2267260-1-yukuai1@huaweicloud.com> 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 X-CM-TRANSID: gCh0CgD3LMmxShpnmfz6Ew--.42902S4 X-Coremail-Antispam: 1UD129KBjvJXoW7tF1fZF4UAw4fCFyfCFyfWFg_yoW8ury5pa yDCFW2yr1jyF18GFWvk3y0vas8J3WDtF4YvFW5KanYvFyDKr9IganYvw1IvFW5Z3yxCr1S yFWjvr4DG3ZayFDanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUU9F14x267AKxVWrJVCq3wAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2ocxC64kIII0Yj41l84x0c7CEw4AK67xGY2AK02 1l84ACjcxK6xIIjxv20xvE14v26F1j6w1UM28EF7xvwVC0I7IYx2IY6xkF7I0E14v26F4U JVW0owA2z4x0Y4vEx4A2jsIE14v26rxl6s0DM28EF7xvwVC2z280aVCY1x0267AKxVW0oV Cq3wAS0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC0VAKzVAqx4xG6I80ewAv7VC0 I7IYx2IY67AKxVWUXVWUAwAv7VC2z280aVAFwI0_Jr0_Gr1lOx8S6xCaFVCjc4AY6r1j6r 4UM4x0Y48IcxkI7VAKI48JM4x0x7Aq67IIx4CEVc8vx2IErcIFxwACI402YVCY1x02628v n2kIc2xKxwCY1x0262kKe7AKxVWrXVW3AwCF04k20xvY0x0EwIxGrwCFx2IqxVCFs4IE7x kEbVWUJVW8JwC20s026c02F40E14v26r1j6r18MI8I3I0E7480Y4vE14v26r106r1rMI8E 67AF67kF1VAFwI0_Wrv_Gr1UMIIYrxkI7VAKI48JMIIF0xvE2Ix0cI8IcVAFwI0_Xr0_Ar 1lIxAIcVC0I7IYx2IY6xkF7I0E14v26F4UJVW0owCI42IY6xAIw20EY4v20xvaj40_Jr0_ JF4lIxAIcVC2z280aVAFwI0_Gr0_Cr1lIxAIcVC2z280aVCY1x0267AKxVWxJr0_GcJvcS sGvfC2KfnxnUUI43ZEXa7sR_v38UUUUUU== X-CM-SenderInfo: 51xn3trlr6x35dzhxuhorxvhhfrp/ Content-Type: text/plain; charset="utf-8" From: Yu Kuai This reverts commit 677f1df179cb68c12ddf7707ec325eb50e99c7d9. Above commit contain manual changes and will cause conflicts for following patches. The commit be backported from mainline later, without conflicts. Signed-off-by: Yu Kuai --- lib/maple_tree.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/lib/maple_tree.c b/lib/maple_tree.c index f73e3772c883..291412b91047 100644 --- a/lib/maple_tree.c +++ b/lib/maple_tree.c @@ -2236,8 +2236,6 @@ static inline void mas_node_or_none(struct ma_state *= mas, =20 /* * mas_wr_node_walk() - Find the correct offset for the index in the @mas. - * If @mas->index cannot be found within the containi= ng - * node, we traverse to the last entry in the node. * @wr_mas: The maple write state * * Uses mas_slot_locked() and does not need to worry about dead nodes. @@ -3657,7 +3655,7 @@ static bool mas_wr_walk(struct ma_wr_state *wr_mas) return true; } =20 -static void mas_wr_walk_index(struct ma_wr_state *wr_mas) +static bool mas_wr_walk_index(struct ma_wr_state *wr_mas) { struct ma_state *mas =3D wr_mas->mas; =20 @@ -3666,9 +3664,11 @@ static void mas_wr_walk_index(struct ma_wr_state *wr= _mas) wr_mas->content =3D mas_slot_locked(mas, wr_mas->slots, mas->offset); if (ma_is_leaf(wr_mas->type)) - return; + return true; mas_wr_walk_traverse(wr_mas); + } + return true; } /* * mas_extend_spanning_null() - Extend a store of a %NULL to include surro= unding %NULLs. @@ -3905,8 +3905,8 @@ static inline int mas_wr_spanning_store(struct ma_wr_= state *wr_mas) memset(&b_node, 0, sizeof(struct maple_big_node)); /* Copy l_mas and store the value in b_node. */ mas_store_b_node(&l_wr_mas, &b_node, l_wr_mas.node_end); - /* Copy r_mas into b_node if there is anything to copy. */ - if (r_mas.max > r_mas.last) + /* Copy r_mas into b_node. */ + if (r_mas.offset <=3D r_wr_mas.node_end) mas_mab_cp(&r_mas, r_mas.offset, r_wr_mas.node_end, &b_node, b_node.b_end + 1); else --=20 2.39.2