From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755537AbdEYFuN (ORCPT ); Thu, 25 May 2017 01:50:13 -0400 Received: from mail-pf0-f171.google.com ([209.85.192.171]:33575 "EHLO mail-pf0-f171.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754312AbdEYFuM (ORCPT ); Thu, 25 May 2017 01:50:12 -0400 Date: Thu, 25 May 2017 14:50:14 +0900 From: Sergey Senozhatsky To: Sumit Gemini Cc: Sergey Senozhatsky , Sergey Senozhatsky , Petr Mladek , Peter Zijlstra , Steven Rostedt , linux-kernel@vger.kernel.org Subject: Re: Fwd: Watchdog detected hard lockup. Message-ID: <20170525055014.GB386@jagdpanzerIV.localdomain> References: <20170518073125.GA458@jagdpanzerIV.localdomain> <20170524082653.GB3311@jagdpanzerIV.localdomain> <20170524083914.GC3311@jagdpanzerIV.localdomain> <20170524125907.GA463@jagdpanzerIV.localdomain> <20170525052952.GA386@jagdpanzerIV.localdomain> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: User-Agent: Mutt/1.8.2 (2017-04-18) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On (05/25/17 11:14), Sumit Gemini wrote: > Thanks Sergey and i forgot to add other guys in discussion. >   > > [1]lkml.kernel.org/r/20170509082859.854-1-sergey.senozhatsky@gmail.com > > Now I'm going for backporting the kernel with RFC, as you suggested me > yesterday. or you can try to reduce the amount of data you printk from IRQ. do you need to hex dump sbks all the time? switching to a deferred printk won't do the trick, probably, because you gonna console_unlock() from IRQ in the worst case anyway. -ss