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=-9.2 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,USER_AGENT_GIT autolearn=ham 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 323DAC43381 for ; Mon, 18 Feb 2019 16:57:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 01CEC217D9 for ; Mon, 18 Feb 2019 16:57:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1550509055; bh=833AhtYNEdCN5QHN4RhPLemCXmIQpROEAaIvtSTmo+8=; h=From:To:Subject:Date:List-ID:From; b=hZSAXspMkfc8NeJfZK+rq0GYJvjR6WJzomNF6v9+nBmP98+ct4Zo67QWNxjPqB7dP AP8ViEsUztySOkcfuxknENFTNLcorFo74vsA4RVGOTlNJnJDlkRVl6lljKKyi9fM+z EccFxeTf8Yx46o3fvRNZ59oWA4POePdDev2PF/jA= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390586AbfBRQ5e (ORCPT ); Mon, 18 Feb 2019 11:57:34 -0500 Received: from mail.kernel.org ([198.145.29.99]:50604 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1733069AbfBRQ5d (ORCPT ); Mon, 18 Feb 2019 11:57:33 -0500 Received: from localhost.localdomain (bl8-197-74.dsl.telepac.pt [85.241.197.74]) (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 3D996217D9 for ; Mon, 18 Feb 2019 16:57:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1550509052; bh=833AhtYNEdCN5QHN4RhPLemCXmIQpROEAaIvtSTmo+8=; h=From:To:Subject:Date:From; b=hGq7jebukOfwfZMpIOHTXfr5qP9EkgGNoyI2DI8KGcjeeevIacFqqFjtCAdBskCpM ld+QPUKqcYPXZdkQkTjN3vGs7cE6xfMpbW05ofboEwi/8thn72nVGCftmGVg7MIJzJ beuY6AxqxBtGnMvQIwR2+HEzgi3ZJ06e0qGo3AI4= From: fdmanana@kernel.org To: linux-btrfs@vger.kernel.org Subject: [PATCH 1/2] Btrfs: add missing error handling after doing leaf/node binary search Date: Mon, 18 Feb 2019 16:57:26 +0000 Message-Id: <20190218165726.22884-1-fdmanana@kernel.org> X-Mailer: git-send-email 2.11.0 Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org From: Filipe Manana The function map_private_extent_buffer() can return an -EINVAL error, and it is called by generic_bin_search() which will return back the error. The btrfs_bin_search() function in turn calls generic_bin_search() and the key_search() function calls btrfs_bin_search(), so both can return the -EINVAL error coming from the map_private_extent_buffer() function. Some callers of these functions were ignoring that these functions can return an error, so fix them to deal with error return values. Signed-off-by: Filipe Manana --- fs/btrfs/ctree.c | 6 ++++++ fs/btrfs/relocation.c | 6 ++++++ fs/btrfs/tree-log.c | 2 ++ 3 files changed, 14 insertions(+) diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c index 5a6c39b44c84..5b9f602fb9e2 100644 --- a/fs/btrfs/ctree.c +++ b/fs/btrfs/ctree.c @@ -3005,6 +3005,8 @@ int btrfs_search_old_slot(struct btrfs_root *root, const struct btrfs_key *key, */ prev_cmp = -1; ret = key_search(b, key, level, &prev_cmp, &slot); + if (ret < 0) + goto done; if (level != 0) { int dec = 0; @@ -5156,6 +5158,10 @@ int btrfs_search_forward(struct btrfs_root *root, struct btrfs_key *min_key, nritems = btrfs_header_nritems(cur); level = btrfs_header_level(cur); sret = btrfs_bin_search(cur, min_key, level, &slot); + if (sret < 0) { + ret = sret; + goto out; + } /* at the lowest level, we're done, setup the path and exit */ if (level == path->lowest_level) { diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c index 272b287f8cf0..434a5b159b65 100644 --- a/fs/btrfs/relocation.c +++ b/fs/btrfs/relocation.c @@ -1802,6 +1802,8 @@ int replace_path(struct btrfs_trans_handle *trans, struct reloc_control *rc, BUG_ON(level < lowest_level); ret = btrfs_bin_search(parent, &key, level, &slot); + if (ret < 0) + break; if (ret && slot > 0) slot--; @@ -2685,6 +2687,8 @@ static int do_relocation(struct btrfs_trans_handle *trans, if (!lowest) { ret = btrfs_bin_search(upper->eb, key, upper->level, &slot); + if (ret < 0) + break; BUG_ON(ret); bytenr = btrfs_node_blockptr(upper->eb, slot); if (node->eb->start == bytenr) @@ -2720,6 +2724,8 @@ static int do_relocation(struct btrfs_trans_handle *trans, } else { ret = btrfs_bin_search(upper->eb, key, upper->level, &slot); + if (ret < 0) + break; BUG_ON(ret); } diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c index 8c9e87f5ec58..81a357a32837 100644 --- a/fs/btrfs/tree-log.c +++ b/fs/btrfs/tree-log.c @@ -3772,6 +3772,8 @@ static int drop_objectid_items(struct btrfs_trans_handle *trans, found_key.type = 0; ret = btrfs_bin_search(path->nodes[0], &found_key, 0, &start_slot); + if (ret < 0) + break; ret = btrfs_del_items(trans, log, path, start_slot, path->slots[0] - start_slot + 1); -- 2.11.0