From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 425F3C433E0 for ; Mon, 29 Jun 2020 20:12:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 230DB20675 for ; Mon, 29 Jun 2020 20:12:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1593461537; bh=AxsttLVOxrBP8cPcE8rjkd3YtVNE7N+1sqoYyZwdLSI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=JNr2HIvrTBt82Vy7sdtP7vUblMB05YACwcZ3XwDte5531i3SGrVl0mrGm5Gikuaeg 0LcxDZAwnC7c7aHbDIJybr/IJjVgiBhpYcFzNnpBwN4pAy5axNNJLzj5Fpe2KT7/LX qlhyBy0ijBxRvgtQlftYLfnbSuFYLKNlmDe5ejwU= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730380AbgF2UMA (ORCPT ); Mon, 29 Jun 2020 16:12:00 -0400 Received: from mail.kernel.org ([198.145.29.99]:40596 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732889AbgF2TaV (ORCPT ); Mon, 29 Jun 2020 15:30:21 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id D307F252AA; Mon, 29 Jun 2020 15:36:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1593445018; bh=AxsttLVOxrBP8cPcE8rjkd3YtVNE7N+1sqoYyZwdLSI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=y5ICjroh/l6BUqS4m7Y3SvT0QYLCNjIe9TGI+KSIElFuah5AEi2WeJlvxYG3m5nH5 zt4OHDHXuAWBOGKotq53eptbl4XNxiOhSowDusRwBiXb0gVy8W5VSEJnv7++qWmDIq Ir0KQLKDansdGf/sBoQLlsaiaFdDHoKFEkpWqvmE= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Junxiao Bi , Joseph Qi , Mark Fasheh , Joel Becker , Changwei Ge , Gang He , Jun Piao , Andrew Morton , Linus Torvalds , Greg Kroah-Hartman Subject: [PATCH 4.19 116/131] ocfs2: fix value of OCFS2_INVALID_SLOT Date: Mon, 29 Jun 2020 11:34:47 -0400 Message-Id: <20200629153502.2494656-117-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200629153502.2494656-1-sashal@kernel.org> References: <20200629153502.2494656-1-sashal@kernel.org> MIME-Version: 1.0 X-KernelTest-Patch: http://kernel.org/pub/linux/kernel/v4.x/stable-review/patch-4.19.131-rc1.gz X-KernelTest-Tree: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git X-KernelTest-Branch: linux-4.19.y X-KernelTest-Patches: git://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git X-KernelTest-Version: 4.19.131-rc1 X-KernelTest-Deadline: 2020-07-01T15:34+00:00 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Junxiao Bi commit 9277f8334ffc719fe922d776444d6e4e884dbf30 upstream. In the ocfs2 disk layout, slot number is 16 bits, but in ocfs2 implementation, slot number is 32 bits. Usually this will not cause any issue, because slot number is converted from u16 to u32, but OCFS2_INVALID_SLOT was defined as -1, when an invalid slot number from disk was obtained, its value was (u16)-1, and it was converted to u32. Then the following checking in get_local_system_inode will be always skipped: static struct inode **get_local_system_inode(struct ocfs2_super *osb, int type, u32 slot) { BUG_ON(slot == OCFS2_INVALID_SLOT); ... } Link: http://lkml.kernel.org/r/20200616183829.87211-5-junxiao.bi@oracle.com Signed-off-by: Junxiao Bi Reviewed-by: Joseph Qi Cc: Mark Fasheh Cc: Joel Becker Cc: Changwei Ge Cc: Gang He Cc: Jun Piao Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds Signed-off-by: Greg Kroah-Hartman --- fs/ocfs2/ocfs2_fs.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/ocfs2/ocfs2_fs.h b/fs/ocfs2/ocfs2_fs.h index 263e28ebeeabe..d50b7f2c7395e 100644 --- a/fs/ocfs2/ocfs2_fs.h +++ b/fs/ocfs2/ocfs2_fs.h @@ -303,7 +303,7 @@ #define OCFS2_MAX_SLOTS 255 /* Slot map indicator for an empty slot */ -#define OCFS2_INVALID_SLOT -1 +#define OCFS2_INVALID_SLOT ((u16)-1) #define OCFS2_VOL_UUID_LEN 16 #define OCFS2_MAX_VOL_LABEL_LEN 64 -- 2.25.1