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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 66467C77B78 for ; Thu, 4 May 2023 19:49:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231272AbjEDTtH (ORCPT ); Thu, 4 May 2023 15:49:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49548 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231278AbjEDTsE (ORCPT ); Thu, 4 May 2023 15:48:04 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D672B11DB1; Thu, 4 May 2023 12:45:26 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id B700863760; Thu, 4 May 2023 19:45:26 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 75F06C4339E; Thu, 4 May 2023 19:45:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1683229526; bh=ZSTIrWdNryoH+T2gMqnWbBo1vloWu29leMfE7FkgBmg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=i3vxQiWJG91joI8zYiLglaZLYDdtXdvWsQid+uzb9/FtT4VCut6V87N5Vtj9GnPdw 15HklNC+xu8Y0a0LOlsDMI1luFf5lovmWTLatYsKwH58ueRFAOxHSzsxU3SEbKrte6 xfOgmWa2zGZkjqocQzhWx6KjqZawSVjIu72FVwt78dubCSxlJLuLyOWn0cAODdOBT0 13X37DBIkdTBnCrOio2w7XDH//9pXhBOQwOB5shKmP16yoDsFsnitLtU4b3eO/qKvu T/gPr4/ALisj1NRD4jWQMhmx2sRZB4SsovaScAJRle9FfOtYY/Nv58NT69yOYCngsR 2y4gpfbjg2wPQ== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Chao Yu , Jaegeuk Kim , Sasha Levin , linux-f2fs-devel@lists.sourceforge.net Subject: [PATCH AUTOSEL 6.2 27/53] f2fs: fix to check readonly condition correctly Date: Thu, 4 May 2023 15:43:47 -0400 Message-Id: <20230504194413.3806354-27-sashal@kernel.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230504194413.3806354-1-sashal@kernel.org> References: <20230504194413.3806354-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Chao Yu [ Upstream commit d78dfefcde9d311284434560d69c0478c55a657e ] With below case, it can mount multi-device image w/ rw option, however one of secondary device is set as ro, later update will cause panic, so let's introduce f2fs_dev_is_readonly(), and check multi-devices rw status in f2fs_remount() w/ it in order to avoid such inconsistent mount status. mkfs.f2fs -c /dev/zram1 /dev/zram0 -f blockdev --setro /dev/zram1 mount -t f2fs dev/zram0 /mnt/f2fs mount: /mnt/f2fs: WARNING: source write-protected, mounted read-only. mount -t f2fs -o remount,rw mnt/f2fs dd if=/dev/zero of=/mnt/f2fs/file bs=1M count=8192 kernel BUG at fs/f2fs/inline.c:258! RIP: 0010:f2fs_write_inline_data+0x23e/0x2d0 [f2fs] Call Trace: f2fs_write_single_data_page+0x26b/0x9f0 [f2fs] f2fs_write_cache_pages+0x389/0xa60 [f2fs] __f2fs_write_data_pages+0x26b/0x2d0 [f2fs] f2fs_write_data_pages+0x2e/0x40 [f2fs] do_writepages+0xd3/0x1b0 __writeback_single_inode+0x5b/0x420 writeback_sb_inodes+0x236/0x5a0 __writeback_inodes_wb+0x56/0xf0 wb_writeback+0x2a3/0x490 wb_do_writeback+0x2b2/0x330 wb_workfn+0x6a/0x260 process_one_work+0x270/0x5e0 worker_thread+0x52/0x3e0 kthread+0xf4/0x120 ret_from_fork+0x29/0x50 Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim Signed-off-by: Sasha Levin --- fs/f2fs/f2fs.h | 5 +++++ fs/f2fs/super.c | 2 +- 2 files changed, 6 insertions(+), 1 deletion(-) diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index e8953c3dc81ab..e186358194cd7 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -4484,6 +4484,11 @@ static inline bool f2fs_hw_is_readonly(struct f2fs_sb_info *sbi) return false; } +static inline bool f2fs_dev_is_readonly(struct f2fs_sb_info *sbi) +{ + return f2fs_sb_has_readonly(sbi) || f2fs_hw_is_readonly(sbi); +} + static inline bool f2fs_lfs_mode(struct f2fs_sb_info *sbi) { return F2FS_OPTION(sbi).fs_mode == FS_MODE_LFS; diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 551468dad3275..5162d9b4200e7 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -2282,7 +2282,7 @@ static int f2fs_remount(struct super_block *sb, int *flags, char *data) if (f2fs_readonly(sb) && (*flags & SB_RDONLY)) goto skip; - if (f2fs_sb_has_readonly(sbi) && !(*flags & SB_RDONLY)) { + if (f2fs_dev_is_readonly(sbi) && !(*flags & SB_RDONLY)) { err = -EROFS; goto restore_opts; } -- 2.39.2