From patchwork Sat May 14 08:01:02 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chao Yu X-Patchwork-Id: 572795 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 B6924C433F5 for ; Sat, 14 May 2022 08:01:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229554AbiENIBQ (ORCPT ); Sat, 14 May 2022 04:01:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33478 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229493AbiENIBQ (ORCPT ); Sat, 14 May 2022 04:01:16 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EADDA24947; Sat, 14 May 2022 01:01:12 -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 74F3E60B52; Sat, 14 May 2022 08:01:12 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 964F8C340EE; Sat, 14 May 2022 08:01:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1652515271; bh=YhvEOsX3XXWBxDsdjMMPb9LQ+FGAbn6utxGTDet/7z8=; h=From:To:Cc:Subject:Date:From; b=g4gfvHHzrI/XEI/TVVaDfwKxbP4jxPVifnLbo9ieqQThuEaTZDPhPL02TiRCGR9NI 51ulFZP3GA0fOAfWLGB64DaiOaJocrSReLT9rkM43X9s+pBq6aomqnX5N2FFtMx+2j 91coYV9xIrRHU0SOj24ddsw4xsmsoGvctyAIB/eLxwg2xsoTUXuHzv17Ev0GohmVWG jbHnOf/pI+l/fQJwRj3XFlTh2bdlV8T9PXubDg8dq/0BrdIoBPW7zVxOG0N6+inViN 0KcMer1j04QVIYI7sGsH7W+0mkMV+BRT6EUmoa/R1g6tk4iip8MGBRc9ecd3fsBtBH YVlxLQqvxHHxw== From: Chao Yu To: jaegeuk@kernel.org Cc: linux-f2fs-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org, Chao Yu , stable@vger.kernel.org, Ming Yan , Chao Yu Subject: [PATCH v2] f2fs: fix to do sanity check for inline inode Date: Sat, 14 May 2022 16:01:02 +0800 Message-Id: <20220514080102.2246-1-chao@kernel.org> X-Mailer: git-send-email 2.32.0 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org As Yanming reported in bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=215895 I have encountered a bug in F2FS file system in kernel v5.17. The kernel message is shown below: kernel BUG at fs/inode.c:611! Call Trace: evict+0x282/0x4e0 __dentry_kill+0x2b2/0x4d0 dput+0x2dd/0x720 do_renameat2+0x596/0x970 __x64_sys_rename+0x78/0x90 do_syscall_64+0x3b/0x90 The root cause is: fuzzed inode has both inline_data flag and encrypted flag, so after it was deleted by rename(), during f2fs_evict_inode(), it will cause inline data conversion due to flags confilction, then page cache will be polluted and trigger panic in clear_inode(). This patch tries to fix the issue by do more sanity checks for inline data inode in sanity_check_inode(). Cc: stable@vger.kernel.org Reported-by: Ming Yan Signed-off-by: Chao Yu --- v2: - fix to check inode type in f2fs_post_read_required() fs/f2fs/f2fs.h | 8 ++++++++ fs/f2fs/inode.c | 3 +-- 2 files changed, 9 insertions(+), 2 deletions(-) diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 492af5b96de1..0dc2461ef02c 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -4126,6 +4126,14 @@ static inline void f2fs_set_encrypted_inode(struct inode *inode) */ static inline bool f2fs_post_read_required(struct inode *inode) { + /* + * used by sanity_check_inode(), when disk layout fields has not + * been synchronized to inmem fields. + */ + if (S_ISREG(inode->i_mode) && (file_is_encrypt(inode) || + F2FS_I(inode)->i_flags & F2FS_COMPR_FL || + file_is_verity(inode))) + return true; return f2fs_encrypted_file(inode) || fsverity_active(inode) || f2fs_compressed_file(inode); } diff --git a/fs/f2fs/inode.c b/fs/f2fs/inode.c index 2fce8fa0dac8..5e494c98e3c2 100644 --- a/fs/f2fs/inode.c +++ b/fs/f2fs/inode.c @@ -276,8 +276,7 @@ static bool sanity_check_inode(struct inode *inode, struct page *node_page) } } - if (f2fs_has_inline_data(inode) && - (!S_ISREG(inode->i_mode) && !S_ISLNK(inode->i_mode))) { + if (f2fs_has_inline_data(inode) && !f2fs_may_inline_data(inode)) { set_sbi_flag(sbi, SBI_NEED_FSCK); f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_data, run fsck to fix", __func__, inode->i_ino, inode->i_mode);