GNU bug report logs - #70669
30.0.50; tramp-archive.elc opened too many times

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

From: Michael Albinus <michael.albinus <at> gmx.de>
To: bug-gnu-emacs <at> gnu.org
Subject: 30.0.50; tramp-archive.elc opened too many times
Date: Tue, 30 Apr 2024 13:23:45 +0200

This is forwarded from emacs-devel <at> gnu.org

-------------------- Start of forwarded message --------------------
From: Madhu <enometh <at> meer.net>
Subject: tramp-archive.elc opened too many times
Date: Sun, 28 Apr 2024 08:30:01 +0530 (IST)
To: emacs-devel <at> gnu.org

Hello, I am getting DoSed with "Too many open files", and they all
seem to be tramp-archive.elc

I have  tramp-archive-enabled => nil
(featurep 'tramp-gvfs) => nil

The only "weird" buffer I have is a file in Zip-Archive mode.

$ lsof -n | grep tramp-archive | wc -l => 5015
of these 1003 entries are from the main emacs process
and 1003 entries are from 4 pthread tasks each as below

```
emacs     10143                 madhu   16r      REG               8,14     27080    1401209 /14/build/emacs/lisp/net/tramp-archive.elc
emacs     10143 10264 pool-spaw    madhu   16r      REG               8,14    27080 1401209 /14/build/emacs/lisp/net/tramp-archive.elc
emacs     10143 10265 gmain        madhu   16r      REG               8,14    27080 1401209 /14/build/emacs/lisp/net/tramp-archive.elc
emacs     10143 10266 dconf\x20    madhu   16r      REG               8,14    27080 1401209 /14/build/emacs/lisp/net/tramp-archive.elc
emacs     10143 10267 gdbus        madhu   16r      REG               8,14    27080 1401209 /14/build/emacs/lisp/net/tramp-archive.elc
```

Any ideas why this might be happening or if it is a solved problem,
and if I can isolate myself from it?

problems with dbus tend to be fatal, once you get into a situaion the
design of dbus prevents recovery and forces the removal of all
evidence which might have caused the attack...


-------------------- End of forwarded message --------------------

Message #10 received at 70669 <at> debbugs.gnu.org (full text, mbox):

From: Michael Albinus <michael.albinus <at> gmx.de>
To: 70669 <at> debbugs.gnu.org
Cc: Madhu <enometh <at> meer.net>
Subject: Re: bug#70669: 30.0.50; tramp-archive.elc opened too many times
Date: Tue, 30 Apr 2024 13:33:38 +0200

Michael Albinus <michael.albinus <at> gmx.de> writes:

> Hello, I am getting DoSed with "Too many open files", and they all
> seem to be tramp-archive.elc
>
> I have  tramp-archive-enabled => nil
> (featurep 'tramp-gvfs) => nil
>
> The only "weird" buffer I have is a file in Zip-Archive mode.
>
> $ lsof -n | grep tramp-archive | wc -l => 5015
> of these 1003 entries are from the main emacs process
> and 1003 entries are from 4 pthread tasks each as below
>
> ```
> emacs     10143                 madhu   16r      REG               8,14     27080    1401209 /14/build/emacs/lisp/net/tramp-archive.elc
> emacs     10143 10264 pool-spaw    madhu   16r      REG               8,14    27080 1401209 /14/build/emacs/lisp/net/tramp-archive.elc
> emacs     10143 10265 gmain        madhu   16r      REG               8,14    27080 1401209 /14/build/emacs/lisp/net/tramp-archive.elc
> emacs     10143 10266 dconf\x20    madhu   16r      REG               8,14    27080 1401209 /14/build/emacs/lisp/net/tramp-archive.elc
> emacs     10143 10267 gdbus        madhu   16r      REG               8,14    27080 1401209 /14/build/emacs/lisp/net/tramp-archive.elc
> ```

This looks like a usual result for one Emacs instance. In my case, I get

--8<---------------cut here---------------start------------->8---
# lsof -n | grep tramp-archive
emacs     120407                          albinus  mem       REG              253,2       91864   17328088 /home/albinus/.emacs.d/eln-cache/30.0.50-d9979fcc/tramp-archive-abf83eef-1bdedebd.eln
emacs     120407 120412 pool-spaw         albinus  mem       REG              253,2       91864   17328088 /home/albinus/.emacs.d/eln-cache/30.0.50-d9979fcc/tramp-archive-abf83eef-1bdedebd.eln
emacs     120407 120413 gmain             albinus  mem       REG              253,2       91864   17328088 /home/albinus/.emacs.d/eln-cache/30.0.50-d9979fcc/tramp-archive-abf83eef-1bdedebd.eln
emacs     120407 120414 gdbus             albinus  mem       REG              253,2       91864   17328088 /home/albinus/.emacs.d/eln-cache/30.0.50-d9979fcc/tramp-archive-abf83eef-1bdedebd.eln
emacs     120407 120416 emacs             albinus  mem       REG              253,2       91864   17328088 /home/albinus/.emacs.d/eln-cache/30.0.50-d9979fcc/tramp-archive-abf83eef-1bdedebd.eln
emacs     120407 120417 dconf\x20         albinus  mem       REG              253,2       91864   17328088 /home/albinus/.emacs.d/eln-cache/30.0.50-d9979fcc/tramp-archive-abf83eef-1bdedebd.eln
--8<---------------cut here---------------end--------------->8---

Are all reported results for pid 10143 (the Emacs pid) in your case?

> Any ideas why this might be happening or if it is a solved problem,
> and if I can isolate myself from it?
>
> problems with dbus tend to be fatal, once you get into a situaion the
> design of dbus prevents recovery and forces the removal of all
> evidence which might have caused the attack...

What makes you think it is a D-Bus problem?

Best regards, Michael.

Message #13 received at 70669 <at> debbugs.gnu.org (full text, mbox):

From: Stefan Kangas <stefankangas <at> gmail.com>
To: Michael Albinus <michael.albinus <at> gmx.de>
Cc: 70669 <at> debbugs.gnu.org, Madhu <enometh <at> meer.net>
Subject: Re: bug#70669: 30.0.50; tramp-archive.elc opened too many times
Date: Fri, 28 Feb 2025 18:39:13 -0800

Michael Albinus <michael.albinus <at> gmx.de> writes:

> Michael Albinus <michael.albinus <at> gmx.de> writes:
>
>> Hello, I am getting DoSed with "Too many open files", and they all
>> seem to be tramp-archive.elc
>>
>> I have  tramp-archive-enabled => nil
>> (featurep 'tramp-gvfs) => nil
>>
>> The only "weird" buffer I have is a file in Zip-Archive mode.
>>
>> $ lsof -n | grep tramp-archive | wc -l => 5015
>> of these 1003 entries are from the main emacs process
>> and 1003 entries are from 4 pthread tasks each as below
>>
>> ```
>> emacs     10143                 madhu   16r      REG               8,14     27080    1401209 /14/build/emacs/lisp/net/tramp-archive.elc
>> emacs     10143 10264 pool-spaw    madhu   16r      REG               8,14    27080 1401209 /14/build/emacs/lisp/net/tramp-archive.elc
>> emacs     10143 10265 gmain        madhu   16r      REG               8,14    27080 1401209 /14/build/emacs/lisp/net/tramp-archive.elc
>> emacs     10143 10266 dconf\x20    madhu   16r      REG               8,14    27080 1401209 /14/build/emacs/lisp/net/tramp-archive.elc
>> emacs     10143 10267 gdbus        madhu   16r      REG               8,14    27080 1401209 /14/build/emacs/lisp/net/tramp-archive.elc
>> ```
>
> This looks like a usual result for one Emacs instance. In my case, I get
>
> # lsof -n | grep tramp-archive
> emacs     120407                          albinus  mem       REG              253,2       91864   17328088 /home/albinus/.emacs.d/eln-cache/30.0.50-d9979fcc/tramp-archive-abf83eef-1bdedebd.eln
> emacs     120407 120412 pool-spaw         albinus  mem       REG              253,2       91864   17328088 /home/albinus/.emacs.d/eln-cache/30.0.50-d9979fcc/tramp-archive-abf83eef-1bdedebd.eln
> emacs     120407 120413 gmain             albinus  mem       REG              253,2       91864   17328088 /home/albinus/.emacs.d/eln-cache/30.0.50-d9979fcc/tramp-archive-abf83eef-1bdedebd.eln
> emacs     120407 120414 gdbus             albinus  mem       REG              253,2       91864   17328088 /home/albinus/.emacs.d/eln-cache/30.0.50-d9979fcc/tramp-archive-abf83eef-1bdedebd.eln
> emacs     120407 120416 emacs             albinus  mem       REG              253,2       91864   17328088 /home/albinus/.emacs.d/eln-cache/30.0.50-d9979fcc/tramp-archive-abf83eef-1bdedebd.eln
> emacs     120407 120417 dconf\x20         albinus  mem       REG              253,2       91864   17328088 /home/albinus/.emacs.d/eln-cache/30.0.50-d9979fcc/tramp-archive-abf83eef-1bdedebd.eln
>
> Are all reported results for pid 10143 (the Emacs pid) in your case?
>
>> Any ideas why this might be happening or if it is a solved problem,
>> and if I can isolate myself from it?
>>
>> problems with dbus tend to be fatal, once you get into a situaion the
>> design of dbus prevents recovery and forces the removal of all
>> evidence which might have caused the attack...
>
> What makes you think it is a D-Bus problem?

Ping.  Madhu, could you answer Michael's questions above?

Message #18 received at 70669 <at> debbugs.gnu.org (full text, mbox):

From: Madhu <enometh <at> meer.net>
To: stefankangas <at> gmail.com
Cc: 70669 <at> debbugs.gnu.org, michael.albinus <at> gmx.de
Subject: Re: bug#70669: 30.0.50; tramp-archive.elc opened too many times
Date: Sat, 01 Mar 2025 22:03:32 +0530 (IST)

*  Stefan Kangas <stefankangas <at> gmail.com> <CADwFkmn4FH+dmheK-dBD9W25swtxcSj0FyjSqkMV34hkmDygLQ <at> mail.gmail.com>
Wrote on Fri, 28 Feb 2025 18:39:13 -0800
> Michael Albinus <michael.albinus <at> gmx.de> writes:
>> Michael Albinus <michael.albinus <at> gmx.de> writes:
>>> Hello, I am getting DoSed with "Too many open files", and they all
>>> seem to be tramp-archive.elc
>>>
>>> I have  tramp-archive-enabled => nil
>>> (featurep 'tramp-gvfs) => nil
>>>
>>> The only "weird" buffer I have is a file in Zip-Archive mode.
>>>
>>> $ lsof -n | grep tramp-archive | wc -l => 5015
>>> of these 1003 entries are from the main emacs process
>>> and 1003 entries are from 4 pthread tasks each as below
>>>
>>> ```
>>> emacs     10143 10267 gdbus        madhu   16r      REG               8,14    27080 1401209 /14/build/emacs/lisp/net/tramp-archive.elc
[7 similar lines snipped]
>>> ```
>>
>> This looks like a usual result for one Emacs instance. In my case, I get
>>
>> # lsof -n | grep tramp-archive
>> emacs     120407                          albinus  mem       REG              253,2       91864   17328088 /home/albinus/.emacs.d/eln-cache/30.0.50-d9979fcc/tramp-archive-abf83eef-1bdedebd.eln
[5 lines snipped]
>> Are all reported results for pid 10143 (the Emacs pid) in your case?

Yes it was

>>> Any ideas why this might be happening or if it is a solved problem,
>>> and if I can isolate myself from it?
>>>
>>> problems with dbus tend to be fatal, once you get into a situaion the
>>> design of dbus prevents recovery and forces the removal of all
>>> evidence which might have caused the attack...
>>
>> What makes you think it is a D-Bus problem?

Why are there so many open files to tramp-archive.eln in the first
place? perhaps the files are mapped for each " thread (named "gdbus"
by glib) which are spawned to handle something that tramp-archive is
doing via dbus?

> Ping.  Madhu, could you answer Michael's questions above?

Locally I made that tramp-archive is never loaded so I haven't
triggered this problem again.  Sorry that's not of much help.

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