From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751295AbaKFMmR (ORCPT ); Thu, 6 Nov 2014 07:42:17 -0500 Received: from mail-wi0-f173.google.com ([209.85.212.173]:47161 "EHLO mail-wi0-f173.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750905AbaKFMmP (ORCPT ); Thu, 6 Nov 2014 07:42:15 -0500 From: Daniel Thompson To: Steven Rostedt , Ingo Molnar Cc: Daniel Thompson , kgdb-bugreport@lists.sourceforge.net, linux-kernel@vger.kernel.org, Andrew Morton , patches@linaro.org, linaro-kernel@lists.linaro.org, John Stultz , Sumit Semwal Subject: [PATCH RESEND 3.18-rc3 v2 0/2] trace: kdb: Bug fixes for ftdump Date: Thu, 6 Nov 2014 12:41:54 +0000 Message-Id: <1415277716-19419-1-git-send-email-daniel.thompson@linaro.org> X-Mailer: git-send-email 1.9.3 In-Reply-To: <1411554781-16751-1-git-send-email-daniel.thompson@linaro.org> References: <1411554781-16751-1-git-send-email-daniel.thompson@linaro.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patchset makes it possible to use kdb's ftdump command without panicing, crashing or livelocking. The ftdump command cannot be used at all without these changes. IIRC this patches are still pending Jason's ack. Changes since v1: * Fixed use-after-free problems in v1 by adding logic to NULL out buffer_iter during free operations. * Introduced a second patch to fix a live lock when trying to display an empty trace buffer. Daniel Thompson (2): trace: kdb: Fix kernel panic during ftdump trace: kdb: Fix kernel livelock with empty buffers kernel/trace/trace_kdb.c | 21 +++++++++++++-------- 1 file changed, 13 insertions(+), 8 deletions(-) -- 1.9.3