Message-ID: <543ECF24.3040202@gmail.com>
Date: Thu, 16 Oct 2014 01:46:44 +0600
From: "Alexander E. Patrakov" <patrakov@gmail.com>
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To: Anatol Pomozov <anatol.pomozov@gmail.com>, Tom Gundersen <teg@jklm.no>
CC: One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk>,
        Takashi Iwai <tiwai@suse.de>, Kay Sievers <kay@vrfy.org>,
        Sreekanth Reddy <sreekanth.reddy@avagotech.com>,
        James Bottomley <James.Bottomley@hansenpartnership.com>,
        Praveen Krishnamoorthy <praveen.krishnamoorthy@avagotech.com>,
        hare <hare@suse.com>,
        Nagalakshmi Nandigama <nagalakshmi.nandigama@avagotech.com>,
        Wu Zhangjin <falcon@meizu.com>,
        Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>,
        "mpt-fusionlinux.pdl" <MPT-FusionLinux.pdl@avagotech.com>,
        Tim Gardner <tim.gardner@canonical.com>,
        Benjamin Poirier <bpoirier@suse.de>,
        Santosh Rastapur <santosh@chelsio.com>,
        Casey Leedom <leedom@chelsio.com>,
        Hariprasad S <hariprasad@chelsio.com>,
        Pierre Fersing <pierre-fersing@pierref.org>,
        Arjan van de Ven <arjan@linux.intel.com>,
        Abhijit Mahajan <abhijit.mahajan@avagotech.com>,
        systemd Mailing List <systemd-devel@lists.freedesktop.org>,
        Linux SCSI List <linux-scsi@vger.kernel.org>,
        "netdev@vger.kernel.org" <netdev@vger.kernel.org>,
        Dmitry Torokhov <dmitry.torokhov@gmail.com>,
        Oleg Nesterov <oleg@redhat.com>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        Tejun Heo <tj@kernel.org>, Andrew Morton <akpm@linux-foundation.org>,
        Joseph Salisbury <joseph.salisbury@canonical.com>
Subject: Re: [systemd-devel] [RFC v2 3/6] kthread: warn on kill signal if
 not OOM
References: <1409899047-13045-1-git-send-email-mcgrof@do-not-panic.com> <20140909011059.GB11706@mtj.dyndns.org> <1410241109.2028.22.camel@jarvis.lan> <CAB=NE6WGAMvffGDTkN5x5Cd+YOtD-Cmo3v7_8FmJ5cvCRbFEpw@mail.gmail.com> <1410291346.13298.16.camel@jarvis.lan> <CAB=NE6U6v-GhAaZv3yXn9uVFvBvE4Uq8z7MQU8N+CyW19WpnNQ@mail.gmail.com> <CAG-2HqUiUksdT4UyeDsdc1Q74=2BiX2TuzzGh_hoLiO5_DOvXQ@mail.gmail.com> <CAB=NE6UprJH69hzc1mjqyq6PAn+7LZmX65Z8CDwUdJ73nDusHg@mail.gmail.com> <CAG-2HqUzCvd55mq=M3=tXbHAjc2QnVuRtbFZMWTz9k_6BmmngQ@mail.gmail.com> <CAB=NE6XmFaWMKuW3vJ7QMZ1BmmWrAPezTYYsqatX4mMNdMjpog@mail.gmail.com> <CAG-2HqWYXo+uRtOk_XW-Bi5aXcTLphEMLCMy8a2THuEg9dHPzw@mail.gmail.com> <CAB=NE6XS9pWmfO7xjTpLFG1OdOJ=UktbOK5pjJCK8hzfXagfXQ@mail.gmail.com> <CAOMFOmVSwPAbPtNzPn93QGjbXh1B3QC7B2Ahd1Qxc=gWb6H7fQ@mail.gmail.com> <CAG-2HqXdxHrx4OL4E0TnzA1Fb6zK6J+qowfD0RHCwviGUv-_ng@mail.gmail.com> <CAOMFOmW2r2SyRVLAdZTV_1wK+gRES-hQXHGUGnWA=kvv6P3KXQ@mail.gmail.com>
In-Reply-To: <CAOMFOmW2r2SyRVLAdZTV_1wK+gRES-hQXHGUGnWA=kvv6P3KXQ@mail.gmail.com>
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Sender: linux-kernel-owner@vger.kernel.org

16.10.2014 01:41, Anatol Pomozov wrote:
> True. module name should be enough. In this case to debug the issue user needs:
>   - disable failing udev rule (or blacklist module?)
>   - reboot, it will let the user get into shell
>   - modprobe the failing module
>   - use sysrq-trigger to get more information about stuck process

Nitpick: this only works only if the "stuck modprobe" bug is 100% 
reproducible. Which is not a given. So it is better to collect as much 
information about the bug when it is noticed by systemd.

-- 
Alexander E. Patrakov
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