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 0D4421DFE25; Wed, 6 Nov 2024 12:23:44 +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=1730895824; cv=none; b=dgqQUwqbgOCHxLpN8+lxWiif9hMIMZf5rbG7N4su20ALFEjdjwXcOV8J1gq8G7hVhVr1xGEqDEvDUz4AQwpeRrW3J73KAwU0+kiMn1gDTwFurOIM0pC8EmBFW7iFEcaUzynULBMgFuYB3twnHxdrIYSXtkJhSv68+qlRPgABKzI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730895824; c=relaxed/simple; bh=B9LP7jaKOsZn1RbCtZMwnAPg5rReo50vr8WXW0G3PHc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=D3ZpQIygAfKZvsHo8M+t5YjhgMSyS2HV4iEtaD3xMNNtamv58rP6BvA4sfcjincOmIK/mXW05bUR5F8OT8qGGtPpUPg5TpdKhhOZjdlZ+x/0/iCtTo3kS+gz4Q8LdHrqQEyb/YRdo6ehggsvhtWTWcpYUEdxulGtM4XTj2dzUSU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=ONCjWyTF; 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="ONCjWyTF" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5B452C4CECD; Wed, 6 Nov 2024 12:23:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1730895823; bh=B9LP7jaKOsZn1RbCtZMwnAPg5rReo50vr8WXW0G3PHc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ONCjWyTF+JZv0d8nDkq5Br7DLNGghr4fm3B3E9T2tUrK4SLYlZ+52uNL/hJBt7Dkm ahJuwRIXiHjbMi89fPvEUlafwx2tuk9WJnoFqXD3eHdcdvLaxi55l+Q06mNvaUw36P xgNHPM1W+HhpmjMQV2BNG0JDQn1o+Yz9sBpVjFtc= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Edward Adam Davis , syzbot+81092778aac03460d6b7@syzkaller.appspotmail.com, Joseph Qi , Joel Becker , Mark Fasheh , Junxiao Bi , Changwei Ge , Gang He , Jun Piao , Andrew Morton , Sasha Levin Subject: [PATCH 4.19 347/350] ocfs2: pass u64 to ocfs2_truncate_inline maybe overflow Date: Wed, 6 Nov 2024 13:04:35 +0100 Message-ID: <20241106120329.254008283@linuxfoundation.org> X-Mailer: git-send-email 2.47.0 In-Reply-To: <20241106120320.865793091@linuxfoundation.org> References: <20241106120320.865793091@linuxfoundation.org> User-Agent: quilt/0.67 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 4.19-stable review patch. If anyone has any objections, please let me know. ------------------ From: Edward Adam Davis [ Upstream commit bc0a2f3a73fcdac651fca64df39306d1e5ebe3b0 ] Syzbot reported a kernel BUG in ocfs2_truncate_inline. There are two reasons for this: first, the parameter value passed is greater than ocfs2_max_inline_data_with_xattr, second, the start and end parameters of ocfs2_truncate_inline are "unsigned int". So, we need to add a sanity check for byte_start and byte_len right before ocfs2_truncate_inline() in ocfs2_remove_inode_range(), if they are greater than ocfs2_max_inline_data_with_xattr return -EINVAL. Link: https://lkml.kernel.org/r/tencent_D48DB5122ADDAEDDD11918CFB68D93258C07@qq.com Fixes: 1afc32b95233 ("ocfs2: Write support for inline data") Signed-off-by: Edward Adam Davis Reported-by: syzbot+81092778aac03460d6b7@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=81092778aac03460d6b7 Reviewed-by: Joseph Qi Cc: Joel Becker Cc: Joseph Qi Cc: Mark Fasheh Cc: Junxiao Bi Cc: Changwei Ge Cc: Gang He Cc: Jun Piao Cc: Signed-off-by: Andrew Morton Signed-off-by: Sasha Levin --- fs/ocfs2/file.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c index a6f486f4138f5..3c71c05a0581b 100644 --- a/fs/ocfs2/file.c +++ b/fs/ocfs2/file.c @@ -1795,6 +1795,14 @@ int ocfs2_remove_inode_range(struct inode *inode, return 0; if (OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL) { + int id_count = ocfs2_max_inline_data_with_xattr(inode->i_sb, di); + + if (byte_start > id_count || byte_start + byte_len > id_count) { + ret = -EINVAL; + mlog_errno(ret); + goto out; + } + ret = ocfs2_truncate_inline(inode, di_bh, byte_start, byte_start + byte_len, 0); if (ret) { -- 2.43.0