From: Thorsten Leemhuis <regressions@leemhuis.info>
To: Mirsad Goran Todorovac <mirsad.todorovac@alu.unizg.hr>,
linux-kernel@vger.kernel.org
Cc: Marc Miltenberger <marcmiltenberger@gmail.com>,
"regressions@lists.linux.dev" <regressions@lists.linux.dev>,
Slade Watkins <srw@sladewatkins.net>
Subject: Re: BUG reproduced: 6.0.0-RC kernels trigger Firefox snap bug with 6.0.0-rc3 through 6.0.0-rc7
Date: Sun, 9 Oct 2022 08:45:22 +0200 [thread overview]
Message-ID: <021de720-4a57-1a88-f456-fcaeaa3653de@leemhuis.info> (raw)
In-Reply-To: <c40786ab-8b3b-9b64-683f-dac589c024df@alu.unizg.hr>
On 08.10.22 18:43, Mirsad Goran Todorovac wrote:
> On 08. 10. 2022. 15:41, Mirsad Goran Todorovac wrote:
>> On 06. 10. 2022. 18:58, Thorsten Leemhuis wrote:
>>> On 06.10.22 18:43, Mirsad Goran Todorovac wrote:
>>>> On 06. 10. 2022. 15:23, Thorsten Leemhuis wrote:
>>>>> On 06.10.22 14:43, Mirsad Todorovac wrote:
>>>>>> On 10/6/22 14:25, Thorsten Leemhuis wrote:
>>>>>>
>>>>>>> One more question:
>>>>>>>
>>>>>>> On 06.10.22 14:00, Thorsten Leemhuis wrote:
>>>>>>> Were those two vanilla kernels? I asked in #snappy on IRC and was
>>>>>>> told
>>>>>>> that "snapd simply expects some ubuntu bit in patched into the
>>>>>>> kernel if
>>>>>>> it detects that it runs on an official ubuntu install...". This
>>>>>>> was also
>>>>>>> suggested "it probably makes sense to file a but in LP to make the
>>>>>>> kernel team aware".
>>>>>> Yes, last time I tried it with git clone from linux_stable on
>>>>>> kernel.org
>>>>>> and
>>>>>> config-6.0.0-060000-generic from the official Ubuntu mainline build
>>>>> You don't want to do that. Better take the config used to build a
>>>>> working kernel (say 5.19.y) and then build 6.0 with it (after running
>>>>> "make olddefconfig"), because it might be a new kernel option (say
>>>>> for a
>>>>> new security technique) that might cause the problem, as explained
>>>>> here:
>>>>> https://docs.kernel.org/admin-guide/reporting-regressions.html
>>>> If I understood well, that would mean building www.kernel.org git
>>>> linux_stable
>>>> source with Ubuntu's config-5.9.13-051903?
>>> I meant "please download Linux 6.0 (ideally through git, that you have
>>> everything to perform a bisection), add the config from a working kernel
>>> (if config-5.9.13-051903 is one, yeah, then take that) as .config and
>>> then run "make olddefconfig" before compiling and installing the kernel
>>> to see if 6.0 fails with that config that was working.
>>
>> Having done this build with mentioned config-5.19.13-051903-config from
>> Ubuntu's mainline build and your recommended make option
>> had produced a kernel that so far did not exhibit the Firefox snap
>> "tab crash/wrong Verneed record version" bug.
>>
>> However, the uptime is 1d 18h50min, so it might be too early to draw
>> a definite general conclusion.
>>
>> Now, the brave conlusion seems to be that the culprit is one of the
>> modules
>> added in config-6.0.0-060000-generic.
>> [...]
A new module might be one possible explanation for such a situations,
but there are others that are more likely.
> I know that it is uncool to reply one's own email,
No, it's not. At least not in the land of the Linux kernel. :-D
> but this is new development:
>
> After starting a zoom spawned session, the Firefox snap tab crash
> reappeared.
>
> I will reinstate that if was done with the config-5.19.13-generic and
> "make olddefconfig"
> followed by a "make -j 10 deb-pkg" build.
>
> Here is the exact log of my actions:
>
> 678 10/06/2022 06:44:58 PM vi config-5.19.13-051913-generic
> 679 10/06/2022 06:45:21 PM time rm -rf linux_stable_build/
> 680 10/06/2022 06:45:31 PM time cp -rp linux_stable linux_stable_build
> 681 10/06/2022 06:46:39 PM time diff -ur linux_stable linux_stable_build
> 682 10/06/2022 06:47:38 PM cp config-5.19.13-051913-generic
> linux_stable_build/.config
> 683 10/06/2022 06:47:46 PM cd linux_stable_build
> 684 10/06/2022 06:47:51 PM make olddefconfig
> 685 10/06/2022 06:48:05 PM time nice make -j10 deb-pkg
Yeah, then it's pretty certain that his is a regression. But it could be
caused by all sorts of things and I have no idea where to start. We thus
really could need a bisection to find the root of the problem. This will
be hard, as this crash only happens infrequently. Thing is: the Ubuntu
developers likely have a strong interest in this particular issue and
due to their knowledge of snap have way better chances to pin-point the
root case quickly. So submitting a bug report to them might be the best
way forward in this situation, even if the kernel is likely at fault here.
Ciao, Thorsten
next prev parent reply other threads:[~2022-10-09 6:46 UTC|newest]
Thread overview: 87+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-27 17:57 6.0.0-RC kernels trigger Firefox snap bug with 6.0.0-rc3 through 6.0.0-rc7 Mirsad Goran Todorovac
2022-09-30 10:48 ` BUG: " Mirsad Todorovac
2022-09-30 11:21 ` Slade Watkins
2022-09-30 11:44 ` Mirsad Todorovac
2022-09-30 12:03 ` Slade Watkins
2022-09-30 18:27 ` Slade Watkins
2022-10-03 8:18 ` Mirsad Goran Todorovac
2022-10-07 8:47 ` Slade Watkins
2022-10-07 10:55 ` Mirsad Goran Todorovac
2022-10-06 10:39 ` Marc Miltenberger
2022-10-06 16:27 ` Slade Watkins
2022-10-06 12:00 ` Thorsten Leemhuis
2022-10-06 12:25 ` Thorsten Leemhuis
2022-10-06 12:43 ` Mirsad Todorovac
2022-10-06 13:23 ` Thorsten Leemhuis
[not found] ` <c05134cc-92fa-dac2-e738-cf6fae194521@alu.unizg.hr>
2022-10-06 16:58 ` Thorsten Leemhuis
[not found] ` <f23494b5-b4ea-a32a-e260-4541039dedc8@alu.unizg.hr>
2022-10-07 6:09 ` Mirsad Goran Todorovac
2022-10-07 6:31 ` Mirsad Goran Todorovac
2022-10-08 13:41 ` Mirsad Goran Todorovac
2022-10-08 16:46 ` Mirsad Goran Todorovac
[not found] ` <c40786ab-8b3b-9b64-683f-dac589c024df@alu.unizg.hr>
2022-10-09 6:45 ` Thorsten Leemhuis [this message]
2022-10-09 22:45 ` BUG reproduced: " Slade Watkins
2022-10-11 17:53 ` Mirsad Goran Todorovac
2022-10-12 6:05 ` Mirsad Todorovac
2022-10-12 22:58 ` Slade Watkins
2022-10-06 12:38 ` Mirsad Todorovac
2022-10-12 7:46 ` Bagas Sanjaya
2022-10-13 13:24 ` Mirsad Goran Todorovac
2022-10-14 10:32 ` Mirsad Todorovac
2022-10-14 12:28 ` Bagas Sanjaya
2022-10-14 15:06 ` Mirsad Todorovac
2022-10-14 21:44 ` Mirsad Goran Todorovac
[not found] ` <ddf13e46-c091-80b2-3b57-c43ac45435f0@alu.unizg.hr>
2022-10-15 14:59 ` Fwd: BISECT result: " Mirsad Goran Todorovac
2022-10-15 15:32 ` Thorsten Leemhuis
2022-10-15 20:59 ` Phillip Lougher
2022-10-16 12:21 ` Bagas Sanjaya
2022-10-16 12:24 ` Bagas Sanjaya
2022-10-16 12:43 ` Thorsten Leemhuis
2022-11-04 12:06 ` BISECT result: 6.0.0-RC kernels trigger Firefox snap bug with 6.0.0-rc3 through 6.0.0-rc7 #forregzbot Thorsten Leemhuis
2022-10-17 9:45 ` BISECT result: 6.0.0-RC kernels trigger Firefox snap bug with 6.0.0-rc3 through 6.0.0-rc7 Bagas Sanjaya
2022-10-17 12:32 ` Bagas Sanjaya
2022-10-17 17:25 ` Phillip Lougher
2022-10-18 1:38 ` Bagas Sanjaya
2022-10-18 8:35 ` Bagas Sanjaya
2022-10-16 15:55 ` Mirsad Goran Todorovac
2022-10-16 19:55 ` Phillip Lougher
2022-10-16 20:19 ` Phillip Lougher
2022-10-17 2:03 ` Bagas Sanjaya
2022-10-17 2:41 ` Mirsad Goran Todorovac
2022-10-17 4:15 ` Bagas Sanjaya
2022-10-17 8:32 ` Mirsad Goran Todorovac
2022-10-17 13:22 ` Mirsad Goran Todorovac
2022-10-17 13:59 ` Phillip Lougher
2022-10-18 5:49 ` Mirsad Todorovac
2022-10-18 2:15 ` Jintao Yin
2022-10-18 6:52 ` Mirsad Todorovac
2022-10-18 8:24 ` Hsin-Yi Wang
2022-10-18 9:23 ` Mirsad Todorovac
2022-10-18 12:59 ` Bagas Sanjaya
2022-10-18 13:38 ` Phillip Lougher
2022-10-18 13:36 ` Phillip Lougher
2022-10-18 7:23 ` Bagas Sanjaya
2022-10-18 8:33 ` Bagas Sanjaya
2022-10-18 17:15 ` Phillip Lougher
2022-10-18 17:41 ` Mirsad Goran Todorovac
2022-10-18 17:41 ` Phillip Lougher
[not found] ` <1b41bf99-754e-8b90-cc2c-67f50642e2dc@alu.unizg.hr>
2022-10-18 21:34 ` Mirsad Goran Todorovac
2022-10-19 5:17 ` Slade Watkins
2022-10-19 11:07 ` Mirsad Goran Todorovac
2022-10-19 7:53 ` Bagas Sanjaya
2022-10-20 6:59 ` Jintao Yin
2022-10-20 7:43 ` Jintao Yin
2022-10-20 9:51 ` Mirsad Goran Todorovac
2022-10-20 13:02 ` Bagas Sanjaya
2022-10-20 13:55 ` Jintao Yin
2022-10-20 15:00 ` Mirsad Todorovac
2022-10-20 15:45 ` Phillip Lougher
2022-10-20 23:23 ` Bagas Sanjaya
2022-10-20 23:44 ` Slade Watkins
2022-10-21 1:48 ` Phillip Lougher
2022-10-21 7:12 ` Mirsad Goran Todorovac
2022-10-21 8:33 ` Mirsad Goran Todorovac
2022-10-21 3:09 ` Jintao Yin
2022-10-20 15:49 ` Phillip Lougher
2022-10-20 16:00 ` Mirsad Todorovac
[not found] ` <fa6c69ff-a493-a519-3564-1a1ccb932553@alu.unizg.hr>
2022-10-18 10:55 ` Bagas Sanjaya
2022-10-18 11:07 ` Mirsad Todorovac
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