* [BUG] cgroup lockup while upgrading udev on debian
@ 2018-01-22 2:31 Steven Rostedt
2018-01-22 16:30 ` Tejun Heo
0 siblings, 1 reply; 5+ messages in thread
From: Steven Rostedt @ 2018-01-22 2:31 UTC (permalink / raw)
To: LKML, Tejun Heo; +Cc: Johannes Weiner, Li Zefan, cgroups, Greg Kroah-Hartman
[-- Attachment #1: Type: text/plain, Size: 589 bytes --]
While upgrading my system, it locked up while upgrading udev. It locked
up on vanilla v4.14.12, and it also locked up on debian's 4.14 kernel
as well. When I booted debian's 4.9 kernel, it upgraded fine.
Note, this is my main server and not a development box. It is not
something I'm going to run bisects or other tests on. I don't even have
it logging to serial console (hence the photo). It's serials are hooked
to my test boxes. That is, it receives logs, it's not set up to send
them.
Attached in the photo of the crash that happened when I did:
# dpkg --configure udev
-- Steve
[-- Attachment #2: udev-crash.jpg --]
[-- Type: image/jpeg, Size: 5330606 bytes --]
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [BUG] cgroup lockup while upgrading udev on debian
2018-01-22 2:31 [BUG] cgroup lockup while upgrading udev on debian Steven Rostedt
@ 2018-01-22 16:30 ` Tejun Heo
2018-01-22 16:41 ` Steven Rostedt
[not found] ` <20180122163051.GE1096857-4dN5La/x3IkLX0oZNxdnEQ2O0Ztt9esIQQ4Iyu8u01E@public.gmane.org>
0 siblings, 2 replies; 5+ messages in thread
From: Tejun Heo @ 2018-01-22 16:30 UTC (permalink / raw)
To: Steven Rostedt
Cc: LKML, Johannes Weiner, Li Zefan, cgroups, Greg Kroah-Hartman
Hello, Steven.
On Sun, Jan 21, 2018 at 09:31:08PM -0500, Steven Rostedt wrote:
> While upgrading my system, it locked up while upgrading udev. It locked
> up on vanilla v4.14.12, and it also locked up on debian's 4.14 kernel
> as well. When I booted debian's 4.9 kernel, it upgraded fine.
>
> Note, this is my main server and not a development box. It is not
> something I'm going to run bisects or other tests on. I don't even have
> it logging to serial console (hence the photo). It's serials are hooked
> to my test boxes. That is, it receives logs, it's not set up to send
> them.
>
> Attached in the photo of the crash that happened when I did:
>
> # dpkg --configure udev
It looks like the same bug which was fixed by 74d0833c659a ("cgroup:
fix css_task_iter crash on CSS_TASK_ITER_PROC"). The bug got
introduced durinv v4.14 cycle and triggers when cgroup1 and cgroup2
are used at the same time, which the recent versions of systemd does
when in cgroup1 mode.
Thanks.
--
tejun
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [BUG] cgroup lockup while upgrading udev on debian
2018-01-22 16:30 ` Tejun Heo
@ 2018-01-22 16:41 ` Steven Rostedt
[not found] ` <20180122163051.GE1096857-4dN5La/x3IkLX0oZNxdnEQ2O0Ztt9esIQQ4Iyu8u01E@public.gmane.org>
1 sibling, 0 replies; 5+ messages in thread
From: Steven Rostedt @ 2018-01-22 16:41 UTC (permalink / raw)
To: Tejun Heo; +Cc: LKML, Johannes Weiner, Li Zefan, cgroups, Greg Kroah-Hartman
On Mon, 22 Jan 2018 08:30:51 -0800
Tejun Heo <tj@kernel.org> wrote:
> It looks like the same bug which was fixed by 74d0833c659a ("cgroup:
> fix css_task_iter crash on CSS_TASK_ITER_PROC"). The bug got
> introduced durinv v4.14 cycle and triggers when cgroup1 and cgroup2
> are used at the same time, which the recent versions of systemd does
> when in cgroup1 mode.
>
Thanks Tejun,
I'll have to upgrade my systems to the lastest stable, before doing any
other upgrades.
-- Steve
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [BUG] cgroup lockup while upgrading udev on debian
2018-01-22 16:30 ` Tejun Heo
@ 2018-01-22 16:46 ` Greg Kroah-Hartman
[not found] ` <20180122163051.GE1096857-4dN5La/x3IkLX0oZNxdnEQ2O0Ztt9esIQQ4Iyu8u01E@public.gmane.org>
1 sibling, 0 replies; 5+ messages in thread
From: Greg Kroah-Hartman @ 2018-01-22 16:46 UTC (permalink / raw)
To: Tejun Heo
Cc: Steven Rostedt, LKML, Johannes Weiner, Li Zefan,
cgroups-u79uwXL29TY76Z2rM5mHXA
On Mon, Jan 22, 2018 at 08:30:51AM -0800, Tejun Heo wrote:
> Hello, Steven.
>
> On Sun, Jan 21, 2018 at 09:31:08PM -0500, Steven Rostedt wrote:
> > While upgrading my system, it locked up while upgrading udev. It locked
> > up on vanilla v4.14.12, and it also locked up on debian's 4.14 kernel
> > as well. When I booted debian's 4.9 kernel, it upgraded fine.
> >
> > Note, this is my main server and not a development box. It is not
> > something I'm going to run bisects or other tests on. I don't even have
> > it logging to serial console (hence the photo). It's serials are hooked
> > to my test boxes. That is, it receives logs, it's not set up to send
> > them.
> >
> > Attached in the photo of the crash that happened when I did:
> >
> > # dpkg --configure udev
>
> It looks like the same bug which was fixed by 74d0833c659a ("cgroup:
> fix css_task_iter crash on CSS_TASK_ITER_PROC"). The bug got
> introduced durinv v4.14 cycle and triggers when cgroup1 and cgroup2
> are used at the same time, which the recent versions of systemd does
> when in cgroup1 mode.
That fix ended up in 4.14.14, so 4.14.12 is a bit too old Steven :)
greg k-h
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [BUG] cgroup lockup while upgrading udev on debian
@ 2018-01-22 16:46 ` Greg Kroah-Hartman
0 siblings, 0 replies; 5+ messages in thread
From: Greg Kroah-Hartman @ 2018-01-22 16:46 UTC (permalink / raw)
To: Tejun Heo; +Cc: Steven Rostedt, LKML, Johannes Weiner, Li Zefan, cgroups
On Mon, Jan 22, 2018 at 08:30:51AM -0800, Tejun Heo wrote:
> Hello, Steven.
>
> On Sun, Jan 21, 2018 at 09:31:08PM -0500, Steven Rostedt wrote:
> > While upgrading my system, it locked up while upgrading udev. It locked
> > up on vanilla v4.14.12, and it also locked up on debian's 4.14 kernel
> > as well. When I booted debian's 4.9 kernel, it upgraded fine.
> >
> > Note, this is my main server and not a development box. It is not
> > something I'm going to run bisects or other tests on. I don't even have
> > it logging to serial console (hence the photo). It's serials are hooked
> > to my test boxes. That is, it receives logs, it's not set up to send
> > them.
> >
> > Attached in the photo of the crash that happened when I did:
> >
> > # dpkg --configure udev
>
> It looks like the same bug which was fixed by 74d0833c659a ("cgroup:
> fix css_task_iter crash on CSS_TASK_ITER_PROC"). The bug got
> introduced durinv v4.14 cycle and triggers when cgroup1 and cgroup2
> are used at the same time, which the recent versions of systemd does
> when in cgroup1 mode.
That fix ended up in 4.14.14, so 4.14.12 is a bit too old Steven :)
greg k-h
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2018-01-22 16:46 UTC | newest]
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-- links below jump to the message on this page --
2018-01-22 2:31 [BUG] cgroup lockup while upgrading udev on debian Steven Rostedt
2018-01-22 16:30 ` Tejun Heo
2018-01-22 16:41 ` Steven Rostedt
[not found] ` <20180122163051.GE1096857-4dN5La/x3IkLX0oZNxdnEQ2O0Ztt9esIQQ4Iyu8u01E@public.gmane.org>
2018-01-22 16:46 ` Greg Kroah-Hartman
2018-01-22 16:46 ` Greg Kroah-Hartman
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