GNU bug report logs - #41407
28.0.50; infinite loop "Article 53570 has a nil data header" on "Exiting summary buffer and applying spam rules"

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Packages: gnus, emacs;

Reported by: sds <at> gnu.org

Date: Tue, 19 May 2020 18:20:01 UTC

Severity: normal

Tags: moreinfo

Found in version 28.0.50

Done: Lars Ingebrigtsen <larsi <at> gnus.org>

Bug is archived. No further changes may be made.

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Report forwarded to bug-gnu-emacs <at> gnu.org, bugs <at> gnus.org:
bug#41407; Package emacs,gnus. (Tue, 19 May 2020 18:20:01 GMT) Full text and rfc822 format available.

Acknowledgement sent to sds <at> gnu.org:
New bug report received and forwarded. Copy sent to bug-gnu-emacs <at> gnu.org, bugs <at> gnus.org. (Tue, 19 May 2020 18:20:01 GMT) Full text and rfc822 format available.

Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Sam Steingold <sds <at> gnu.org>
To: bug-gnu-emacs <at> gnu.org
Subject: 28.0.50; infinite loop "Article 53570 has a nil data header" on
 "Exiting summary buffer and applying spam rules"
Date: Tue, 19 May 2020 14:18:58 -0400
To exit *Summary gmane.emacs.gnus.general*, I hit `c`
(gnus-summary-catchup-and-exit) and get an infinite loop of repeating
messages:


--8<---------------cut here---------------start------------->8---
Exiting summary buffer and applying spam rules
Article 53570 has a nil data header
Article 53569 has a nil data header
Article 53568 has a nil data header
Article 53567 has a nil data header
Article 53566 has a nil data header
Article 53565 has a nil data header
Article 53564 has a nil data header
Article 53563 has a nil data header
Article 53562 has a nil data header
Article 53561 has a nil data header
Article 53560 has a nil data header
Article 53559 has a nil data header
Article 53558 has a nil data header
Article 53557 has a nil data header
Article 53556 has a nil data header
Article 53555 has a nil data header
Article 53554 has a nil data header
Article 53570 has a nil data header
Article 53569 has a nil data header
Article 53568 has a nil data header
Article 53567 has a nil data header
Article 53566 has a nil data header
Article 53565 has a nil data header
Article 53564 has a nil data header
Article 53563 has a nil data header
Article 53562 has a nil data header
Article 53561 has a nil data header
Article 53560 has a nil data header
Article 53559 has a nil data header
Article 53558 has a nil data header
Article 53557 has a nil data header
Article 53556 has a nil data header
Article 53555 has a nil data header
Article 53554 has a nil data header
Article 53570 has a nil data header
Article 53569 has a nil data header
Article 53568 has a nil data header
Article 53567 has a nil data header
Article 53566 has a nil data header
Article 53565 has a nil data header
Article 53564 has a nil data header
Article 53563 has a nil data header
Article 53562 has a nil data header
Article 53561 has a nil data header
Article 53560 has a nil data header
Article 53559 has a nil data header
Article 53558 has a nil data header
Article 53557 has a nil data header
Article 53556 has a nil data header
Article 53555 has a nil data header
Article 53554 has a nil data header
Article 53570 has a nil data header
Article 53569 has a nil data header
Article 53568 has a nil data header
Article 53567 has a nil data header
Article 53566 has a nil data header
Article 53565 has a nil data header
Article 53564 has a nil data header
Article 53563 has a nil data header
Article 53562 has a nil data header
Article 53561 has a nil data header
Article 53560 has a nil data header
Article 53559 has a nil data header
Article 53558 has a nil data header
Article 53557 has a nil data header
Article 53556 has a nil data header
Article 53555 has a nil data header
Article 53554 has a nil data header
Article 53570 has a nil data header
Article 53569 has a nil data header
Article 53568 has a nil data header
Article 53567 has a nil data header
Article 53566 has a nil data header
Article 53565 has a nil data header
Article 53564 has a nil data header
Article 53563 has a nil data header
Article 53562 has a nil data header
Article 53561 has a nil data header
Article 53560 has a nil data header
Article 53559 has a nil data header
Article 53558 has a nil data header
Article 53557 has a nil data header
Article 53556 has a nil data header
Article 53555 has a nil data header
Article 53554 has a nil data header
Article 53570 has a nil data header
Article 53569 has a nil data header
Article 53568 has a nil data header
Article 53567 has a nil data header
Article 53566 has a nil data header
Article 53565 has a nil data header
Article 53564 has a nil data header
Article 53563 has a nil data header
Article 53562 has a nil data header
Article 53561 has a nil data header
Article 53560 has a nil data header
Article 53559 has a nil data header
Article 53558 has a nil data header
Article 53557 has a nil data header
Article 53556 has a nil data header
Article 53555 has a nil data header
Article 53554 has a nil data header
Article 53570 has a nil data header
Article 53569 has a nil data header
Article 53568 has a nil data header
Article 53567 has a nil data header
Article 53566 has a nil data header
Article 53565 has a nil data header
Article 53564 has a nil data header
Article 53563 has a nil data header
Article 53562 has a nil data header
Article 53561 has a nil data header
Article 53560 has a nil data header
Article 53559 has a nil data header
Article 53558 has a nil data header
Article 53557 has a nil data header
Article 53556 has a nil data header
Article 53555 has a nil data header
Article 53554 has a nil data header
Article 53570 has a nil data header
Article 53569 has a nil data header
Article 53568 has a nil data header
Article 53567 has a nil data header
Article 53566 has a nil data header
Article 53565 has a nil data header
--8<---------------cut here---------------end--------------->8---



When I `C-g` out of this, I see this in the *Summary
gmane.emacs.gnus.general*:


--8<---------------cut here---------------start------------->8---
! +[  22: +=> gmane.emacs.gnus. 20200511T174632] How to debug scoring?
!A   [  24: +Lars Ingebrigtsen    20200519T094354] 
C. [  22: +Lars Ingebrigtsen    20200519T092352] Re: new wifi connection = nntp timeout = Emacs restart?
C. [  17: +Lars Ingebrigtsen    20200519T093447] Re: new wifi connection = nntp timeout = Emacs restart?, Re: new wifi connection = nntp timeout = Emacs restart?
C.   <  13: +Lars Ingebrigtsen    20200519T093617> 
C. [  12: +Lars Ingebrigtsen    20200519T094220] Re: How often do the Emacs-Cloud nnimap folder needs to be cleaned up?
C.+[   6:  kevin shell          20200519T093507] Fold Unfold threads
C.   [  16: +Andreas Schwab       20200519T102811] 
--8<---------------cut here---------------end--------------->8---




In GNU Emacs 28.0.50 (build 1, x86_64-apple-darwin18.7.0, NS appkit-1671.60 Version 10.14.6 (Build 18G4032))
 of 2020-05-18 built on BZ-C02XR5CGJG5L
Repository revision: b1fe27d77db8f819641231ca46725f3eed0b4d9b
Repository branch: master
Windowing system distributor 'Apple', version 10.3.1671
System Description:  Mac OS X 10.14.6

Recent messages:
Article 53570 has a nil data header
Article 53569 has a nil data header
Article 53568 has a nil data header
Article 53567 has a nil data header
Article 53566 has a nil data header
Article 53565 has a nil data header
Quit retrieving data from nntp
Quit
End of buffer [12 times]
Mark saved where search started

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-- 
Sam Steingold (http://sds.podval.org/) on darwin Ns 10.3.1671
http://childpsy.net http://calmchildstories.com http://steingoldpsychology.com
https://mideasttruth.com https://ffii.org http://islamexposedonline.com
WinWord 6.0 UNinstall: Not enough disk space to uninstall WinWord




Information forwarded to bug-gnu-emacs <at> gnu.org, bugs <at> gnus.org:
bug#41407; Package emacs,gnus. (Wed, 05 Aug 2020 11:12:02 GMT) Full text and rfc822 format available.

Message #8 received at 41407 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Sam Steingold <sds <at> gnu.org>
Cc: 41407 <at> debbugs.gnu.org
Subject: Re: bug#41407: 28.0.50; infinite loop "Article 53570 has a nil data
 header" on "Exiting summary buffer and applying spam rules"
Date: Wed, 05 Aug 2020 13:11:25 +0200
Sam Steingold <sds <at> gnu.org> writes:

> To exit *Summary gmane.emacs.gnus.general*, I hit `c`
> (gnus-summary-catchup-and-exit) and get an infinite loop of repeating
> messages:
>
> Exiting summary buffer and applying spam rules
> Article 53570 has a nil data header
> Article 53569 has a nil data header
> Article 53568 has a nil data header

Counting down to zero?  Anyway, this isn't something that Gnus does by
default -- do you have any customisations that trigger this behaviour?

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no




Added tag(s) moreinfo. Request was from Lars Ingebrigtsen <larsi <at> gnus.org> to control <at> debbugs.gnu.org. (Wed, 05 Aug 2020 11:12:02 GMT) Full text and rfc822 format available.

Information forwarded to bug-gnu-emacs <at> gnu.org, bugs <at> gnus.org:
bug#41407; Package emacs,gnus. (Wed, 05 Aug 2020 22:18:02 GMT) Full text and rfc822 format available.

Message #13 received at 41407 <at> debbugs.gnu.org (full text, mbox):

From: Sam Steingold <sds <at> gnu.org>
To: Lars Ingebrigtsen <larsi <at> gnus.org>
Cc: 41407 <at> debbugs.gnu.org
Subject: Re: bug#41407: 28.0.50; infinite loop "Article 53570 has a nil data
 header" on "Exiting summary buffer and applying spam rules"
Date: Wed, 05 Aug 2020 18:17:35 -0400
> * Lars Ingebrigtsen <ynefv <at> tahf.bet> [2020-08-05 13:11:25 +0200]:
>
> Sam Steingold <sds <at> gnu.org> writes:
>
>> To exit *Summary gmane.emacs.gnus.general*, I hit `c`
>> (gnus-summary-catchup-and-exit) and get an infinite loop of repeating
>> messages:
>>
>> Exiting summary buffer and applying spam rules
>> Article 53570 has a nil data header
>> Article 53569 has a nil data header
>> Article 53568 has a nil data header
>
> Counting down to zero?

Down, but not to 0.
I guess to the earliest article in the buffer and then starting again
from 53570. As the subject says - "infinite loop".

> Anyway, this isn't something that Gnus does by default -- do you have
> any customisations that trigger this behaviour?

What customisations could possibly cause that?

At any rate, this was a few months ago and I have not seen it again
(knocks on wood ;-))

-- 
Sam Steingold (http://sds.podval.org/) on darwin Ns 10.3.1894
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Information forwarded to bug-gnu-emacs <at> gnu.org, bugs <at> gnus.org:
bug#41407; Package emacs,gnus. (Thu, 06 Aug 2020 07:05:02 GMT) Full text and rfc822 format available.

Message #16 received at 41407 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Sam Steingold <sds <at> gnu.org>
Cc: 41407 <at> debbugs.gnu.org
Subject: Re: bug#41407: 28.0.50; infinite loop "Article 53570 has a nil data
 header" on "Exiting summary buffer and applying spam rules"
Date: Thu, 06 Aug 2020 09:04:28 +0200
Sam Steingold <sds <at> gnu.org> writes:

>> Anyway, this isn't something that Gnus does by default -- do you have
>> any customisations that trigger this behaviour?
>
> What customisations could possibly cause that?

Well, the thing that's bugging out is apparently something in
gnus/spam.el, which isn't used by default...

> At any rate, this was a few months ago and I have not seen it again
> (knocks on wood ;-))

If this happens again, do a

(setq debug-on-message "has a nil data header")

and perhaps the backtrace will give a hint where the bug originates
from.

I've given spam.el a cursory look-over, and trying to follow the bits
that call the function that gives that message, but there's too many
possible code paths (apparently) to pinpoint where this is happening...

But as you can't reproduce the bug now, it seems unlikely that we'll be
able to make further progress here.  If this happens again, try the
debug-on-message trick and open a new bug report, and post the
backtrace.  That should make it easier to track down.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no




bug closed, send any further explanations to 41407 <at> debbugs.gnu.org and sds <at> gnu.org Request was from Lars Ingebrigtsen <larsi <at> gnus.org> to control <at> debbugs.gnu.org. (Thu, 06 Aug 2020 07:05:02 GMT) Full text and rfc822 format available.

bug archived. Request was from Debbugs Internal Request <help-debbugs <at> gnu.org> to internal_control <at> debbugs.gnu.org. (Thu, 03 Sep 2020 11:24:04 GMT) Full text and rfc822 format available.

This bug report was last modified 3 years and 228 days ago.

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