Re: The unshared changes give a problem with build after doing git pull on next

[Matthias Fischer <matthias.fischer@ipfire.org>]

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On 27.08.2024 12:01, Michael Tremer wrote:
> Hello,

Hi,

>> On 24 Aug 2024, at 09:33, Matthias Fischer <matthias.fischer(a)ipfire.org> wrote:
>> 
>> On 21.08.2024 16:28, Michael Tremer wrote:
>>> Hello Matthias,
>> 
>> Hi Michael,
>> 
>>> As you might have seen I played around with this all more… There is either a kernel bug, or a bug in unshare which causes these problems…
>>> 
>>> So if we mount /proc manually later this works for me on Ubuntu 22.04 LTS:
>>> 
>>>  https://git.ipfire.org/?p=ipfire-2.x.git;a=commitdiff;h=8ea702f3f853c4c28a2885dafdcae2e737c0a49b
>>> 
>>> However, there are now some packages which don’t want to build any more.
>>> 
>>> So I would simply suggest to upgrade the kernel on your Ubuntu release like this:
>>> 
>>>  apt install linux-generic-hwe-22.04
>> 
>> Done. Ran without problems.
>> 
>> I'm now on "Linux Devel64-1 6.8.0-40-generic #40~22.04.3-Ubuntu SMP
>> PREEMPT_DYNAMIC..."
>> 
>>> That should allow you to build with the stock make.sh again.
>> 
>> Sorry, but no chance...
>> 
>> Today I tested the hint from "siosios" found in
>> https://community.ipfire.org/t/trying-to-build-188/11999/8
> 
> Are you referring to this?
> 
>    mount -o bind ${BUILD_DIR}/proc ${BUILD_DIR}/proc
> 
> He put this into an unfortunate place and will mount this over and over and over again... but making the empty directory a mount point is something that would acceptable as a workaround.

I tested this again today, but running "./make.sh downloadsrc" ended in
a bunch of error messages: "...mount point does not exist".

So I'm back to my previous solution from
https://community.ipfire.org/t/trying-to-build-188/11999/9

And I found that I only need ONE line:

...
   # If unshare is asked to terminate, terminate all child processes
   "--kill-child"
  )

mount --bind ${BUILD_DIR}/proc ${BUILD_DIR}/proc

 fi

while [ $# -gt 0 ]; do
  case "${1}" in
...

> If you can confirm, I can add this to the code.

Right now I wouldn't add anything. This is too mysterious (to me). Its
working - but I don't know why.

In a few days the LTS-update for Ubuntu 24.04 LTS will be available -
its scheduled for August 29. I'll test this update and then we'll see.

>> Works. Build is running. I'm building 'clamav 1.4.0' right now.
>> 
>> One glitch I found: the new build still has problems identifying the
>> need for customizing new rootfiles(?).
> 
> This might be fixed here:
> 
>   https://git.ipfire.org/?p=ipfire-2.x.git;a=commitdiff;h=d7ee801712705c97fda658bb71209d814d1db841

Thanks! I'm testing...

Best
Matthias

[Shortened some stuff - again]