From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 3092035FC02; Tue, 26 Aug 2025 14:37:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756219066; cv=none; b=u1pNOfKaf5rsVzBk722Pq/eMNU/2rBFUJeW/ZhCDls3GPXvZKWvKfyvW0okBXVPVtvTNPAz4F6XiQ9F/xgai7eX4/FwYCATfLaWdIykpj9uq6UCelL/5tC12/a+qZQHgv/t2WBkMPRApKiurCtfgpTDJTCYYXk6+OTaA6q9sUgk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756219066; c=relaxed/simple; bh=JQvkHuoba2uFdJHfc9wunRFkzOqKIucFd4eJ7InorP8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ZDRIiuXL4y5K3/KVfLNnsC+OkjQL6zd96Z8IVjNMmpCS5mcyErzew2yCvR7OEBLTcsNfWCa9X8k+/MyARhkbtTj7j+VuaELNX3KX1gtvRhuwX8xuQLuPup7q9V/5XJa5zgezlXDmgfeZcxk3TfZBQRPoaW2mgaSLHpOVMyYRVSU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=SdjkNTce; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="SdjkNTce" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4B300C113CF; Tue, 26 Aug 2025 14:37:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1756219065; bh=JQvkHuoba2uFdJHfc9wunRFkzOqKIucFd4eJ7InorP8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=SdjkNTce/cgHRdhozWTeNN7vDiWD3vVkBTr+kngL4bWYAtv1GMWWd7d5lUivV3dBr ExVRibL+dcRwHfv1or7pfBML7+twxy7BjHogVreEElVZ3Lh8LHvaQZLj99TRjIXvSN kcln2o/phLJqYu7jBHbVsQEc1CAcGF/iYWNv7uU4= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, syzbot+6e516bb515d93230bc7b@syzkaller.appspotmail.com, Lizhi Xu , Dave Kleikamp , Sasha Levin Subject: [PATCH 5.4 239/403] jfs: truncate good inode pages when hard link is 0 Date: Tue, 26 Aug 2025 13:09:25 +0200 Message-ID: <20250826110913.435366831@linuxfoundation.org> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250826110905.607690791@linuxfoundation.org> References: <20250826110905.607690791@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Lizhi Xu [ Upstream commit 2d91b3765cd05016335cd5df5e5c6a29708ec058 ] The fileset value of the inode copy from the disk by the reproducer is AGGR_RESERVED_I. When executing evict, its hard link number is 0, so its inode pages are not truncated. This causes the bugon to be triggered when executing clear_inode() because nrpages is greater than 0. Reported-by: syzbot+6e516bb515d93230bc7b@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=6e516bb515d93230bc7b Signed-off-by: Lizhi Xu Signed-off-by: Dave Kleikamp Signed-off-by: Sasha Levin --- fs/jfs/inode.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/jfs/inode.c b/fs/jfs/inode.c index 62c4a5450cda..6d353fbe67c0 100644 --- a/fs/jfs/inode.c +++ b/fs/jfs/inode.c @@ -145,9 +145,9 @@ void jfs_evict_inode(struct inode *inode) if (!inode->i_nlink && !is_bad_inode(inode)) { dquot_initialize(inode); + truncate_inode_pages_final(&inode->i_data); if (JFS_IP(inode)->fileset == FILESYSTEM_I) { struct inode *ipimap = JFS_SBI(inode->i_sb)->ipimap; - truncate_inode_pages_final(&inode->i_data); if (test_cflag(COMMIT_Freewmap, inode)) jfs_free_zero_link(inode); -- 2.39.5