Hi all,
What is the current status of this bug fix patch?
I think it's OK if resending Hatayama-san's patch with Ingo's.
Thanks,
(2015/03/25 2:04), Vivek Goyal wrote:
> On Tue, Mar 24, 2015 at 05:18:14PM +0100, Ingo Molnar wrote:
>>
>> * Vivek Goyal wrote:
>>
Yet the actual bug is in that
Hello all,
(2015/03/24 23:32), Vivek Goyal wrote:
> On Tue, Mar 24, 2015 at 05:27:10AM -0500, Eric W. Biederman wrote:
>> Ingo Molnar writes:
>>
>>> * Masami Hiramatsu wrote:
>>>
>
> f06e5153f4ae ("kernel/panic.c: add "crash_kexec_post_notifiers" option
> for kdump after panic_not
On Tue, Mar 24, 2015 at 05:18:14PM +0100, Ingo Molnar wrote:
>
> * Vivek Goyal wrote:
>
> > > Yet the actual bug is in that commit, 'crash_kexec_post_notifiers'
> > > was clearly not a no-op in the default case, against expectations.
> >
> > Hi Ingo,
> >
> > I did a quick test and in default
* Vivek Goyal wrote:
> > Yet the actual bug is in that commit, 'crash_kexec_post_notifiers'
> > was clearly not a no-op in the default case, against expectations.
>
> Hi Ingo,
>
> I did a quick test and in default case crash_kexec() runs before
> panic notifiers. So it does look like crash_k
On Tue, Mar 24, 2015 at 08:11:29AM +0100, Ingo Molnar wrote:
>
> * Masami Hiramatsu wrote:
>
> > (2015/03/23 16:19), Ingo Molnar wrote:
> > >
> > > * Baoquan He wrote:
> > >
> > >> CC more people ...
> > >>
> > >> On 03/07/15 at 01:31am, "Hatayama, Daisuke/畑山 大輔" wrote:
> > >>> The commit f06
On Tue, Mar 24, 2015 at 05:27:10AM -0500, Eric W. Biederman wrote:
> Ingo Molnar writes:
>
> > * Masami Hiramatsu wrote:
> >
> >> >
> >> > f06e5153f4ae ("kernel/panic.c: add "crash_kexec_post_notifiers" option
> >> > for kdump after panic_notifers")
> >> >
> >> > Was that crash_kexec() was
Ingo Molnar writes:
> * Masami Hiramatsu wrote:
>
>> >
>> > f06e5153f4ae ("kernel/panic.c: add "crash_kexec_post_notifiers" option
>> > for kdump after panic_notifers")
>> >
>> > Was that crash_kexec() was called unconditionally after notifiers were
>> > called, which should be fixed via t
* Masami Hiramatsu wrote:
> (2015/03/23 16:19), Ingo Molnar wrote:
> >
> > * Baoquan He wrote:
> >
> >> CC more people ...
> >>
> >> On 03/07/15 at 01:31am, "Hatayama, Daisuke/畑山 大輔" wrote:
> >>> The commit f06e5153f4ae2e2f3b0300f0e260e40cb7fefd45 introduced
> >>> "crash_kexec_post_notifiers"
(2015/03/23 23:31), Vivek Goyal wrote:
[...]
Secondly, and more importantly, the whole premise of commit
f06e5153f4ae is broken IMHO:
"This can help rare situations where kdump fails because of unstable
crashed kernel or hardware failure (memory corruption on critical
>
(2015/03/23 16:19), Ingo Molnar wrote:
>
> * Baoquan He wrote:
>
>> CC more people ...
>>
>> On 03/07/15 at 01:31am, "Hatayama, Daisuke/畑山 大輔" wrote:
>>> The commit f06e5153f4ae2e2f3b0300f0e260e40cb7fefd45 introduced
>>> "crash_kexec_post_notifiers" kernel boot option, which toggles
>>> wheather
On Mon, Mar 23, 2015 at 10:31:58AM -0400, Vivek Goyal wrote:
> > > I think one of the motivations behind this patch was call to kmsg_dump().
> > > Some vendors have been wanting to have the capability to save kernel logs
> > > to some NVRAM before transition to second kernel happens. Their argument
On Mon, Mar 23, 2015 at 08:19:43AM +0100, Ingo Molnar wrote:
>
> * Baoquan He wrote:
>
> > CC more people ...
> >
> > On 03/07/15 at 01:31am, "Hatayama, Daisuke/畑山 大輔" wrote:
> > > The commit f06e5153f4ae2e2f3b0300f0e260e40cb7fefd45 introduced
> > > "crash_kexec_post_notifiers" kernel boot opti
On Mon, Mar 23, 2015 at 02:50:46PM +0100, Ingo Molnar wrote:
>
> * Vivek Goyal wrote:
>
> > On Mon, Mar 23, 2015 at 08:19:43AM +0100, Ingo Molnar wrote:
> > >
> > > * Baoquan He wrote:
> > >
> > > > CC more people ...
> > > >
> > > > On 03/07/15 at 01:31am, "Hatayama, Daisuke/畑山 大輔" wrote:
>
* Vivek Goyal wrote:
> On Mon, Mar 23, 2015 at 08:19:43AM +0100, Ingo Molnar wrote:
> >
> > * Baoquan He wrote:
> >
> > > CC more people ...
> > >
> > > On 03/07/15 at 01:31am, "Hatayama, Daisuke/畑山 大輔" wrote:
> > > > The commit f06e5153f4ae2e2f3b0300f0e260e40cb7fefd45 introduced
> > > > "cr
On Mon, Mar 23, 2015 at 08:19:43AM +0100, Ingo Molnar wrote:
>
> * Baoquan He wrote:
>
> > CC more people ...
> >
> > On 03/07/15 at 01:31am, "Hatayama, Daisuke/畑山 大輔" wrote:
> > > The commit f06e5153f4ae2e2f3b0300f0e260e40cb7fefd45 introduced
> > > "crash_kexec_post_notifiers" kernel boot opti
* Baoquan He wrote:
> CC more people ...
>
> On 03/07/15 at 01:31am, "Hatayama, Daisuke/畑山 大輔" wrote:
> > The commit f06e5153f4ae2e2f3b0300f0e260e40cb7fefd45 introduced
> > "crash_kexec_post_notifiers" kernel boot option, which toggles
> > wheather panic() calls crash_kexec() before panic_notif
CC more people ...
On 03/07/15 at 01:31am, "Hatayama, Daisuke/畑山 大輔" wrote:
> The commit f06e5153f4ae2e2f3b0300f0e260e40cb7fefd45 introduced
> "crash_kexec_post_notifiers" kernel boot option, which toggles
> wheather panic() calls crash_kexec() before panic_notifiers and dump
> kmsg or after.
>
>
On Sat, Mar 07, 2015 at 01:31:01AM +0900, "Hatayama, Daisuke/畑山 大輔" wrote:
> The commit f06e5153f4ae2e2f3b0300f0e260e40cb7fefd45 introduced
> "crash_kexec_post_notifiers" kernel boot option, which toggles
> wheather panic() calls crash_kexec() before panic_notifiers and dump
> kmsg or after.
>
> T
The commit f06e5153f4ae2e2f3b0300f0e260e40cb7fefd45 introduced
"crash_kexec_post_notifiers" kernel boot option, which toggles
wheather panic() calls crash_kexec() before panic_notifiers and dump
kmsg or after.
The problem is that the commit overlooks panic_on_oops kernel boot
option. If it is enab
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