From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from aserp1040.oracle.com ([141.146.126.69]:51802 "EHLO aserp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932520AbaFKQAg (ORCPT ); Wed, 11 Jun 2014 12:00:36 -0400 From: Sasha Levin To: clm@fb.com, jbacik@fb.com Cc: linux-btrfs@vger.kernel.org, linux-kernel@vger.kernel.org, Sasha Levin Subject: [PATCH] btrfs: prevent RCU warning when dereferencing radix tree slot Date: Wed, 11 Jun 2014 12:00:25 -0400 Message-Id: <1402502425-17570-1-git-send-email-sasha.levin@oracle.com> Sender: linux-btrfs-owner@vger.kernel.org List-ID: Mark the dereference as protected by lock. Not doing so triggers an RCU warning since the radix tree assumed that RCU is in use. Signed-off-by: Sasha Levin --- fs/btrfs/tests/btrfs-tests.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/btrfs/tests/btrfs-tests.c b/fs/btrfs/tests/btrfs-tests.c index a5dcacb..9626252 100644 --- a/fs/btrfs/tests/btrfs-tests.c +++ b/fs/btrfs/tests/btrfs-tests.c @@ -135,7 +135,7 @@ restart: radix_tree_for_each_slot(slot, &fs_info->buffer_radix, &iter, 0) { struct extent_buffer *eb; - eb = radix_tree_deref_slot(slot); + eb = radix_tree_deref_slot_protected(slot, &fs_info->buffer_lock); if (!eb) continue; /* Shouldn't happen but that kind of thinking creates CVE's */ -- 1.7.10.4