Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
Date:   Mon, 10 Dec 2018 14:46:22 +0900
From:   Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
To:     "Liu, Chuansheng" <chuansheng.liu@intel.com>
Cc:     "akpm@linux-foundation.org" <akpm@linux-foundation.org>,
        "pmladek@suse.com" <pmladek@suse.com>,
        "sergey.senozhatsky@gmail.com" <sergey.senozhatsky@gmail.com>,
        "rostedt@goodmis.org" <rostedt@goodmis.org>,
        "dvyukov@google.com" <dvyukov@google.com>,
        "penguin-kernel@I-love.SAKURA.ne.jp" 
        <penguin-kernel@i-love.sakura.ne.jp>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] kernel/hung_task.c: force ignore_loglevel before panic
Message-ID: <20181210054622.GA6291@jagdpanzerIV>
References: <27240C0AC20F114CBF8149A2696CBE4A6015A889@SHSMSX101.ccr.corp.intel.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <27240C0AC20F114CBF8149A2696CBE4A6015A889@SHSMSX101.ccr.corp.intel.com>
User-Agent: Mutt/1.11.1 (2018-12-01)
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

On (12/10/18 05:40), Liu, Chuansheng wrote:
> @@ -130,6 +130,13 @@ static void check_hung_task(struct task_struct *t, unsigned long timeout)
>                         init_utsname()->version);
>                 pr_err("\"echo 0 > /proc/sys/kernel/hung_task_timeout_secs\""
>                         " disables this message.\n");
> +               /* When sysctl_hung_task_panic is set, we have to force
> +                * ignore_loglevel to get really useful hung task
> +                * information.
> +                */
> +               if (sysctl_hung_task_panic && !ignore_loglevel)
> +                       ignore_loglevel = true;

		console_verbose()?

	-ss