** Description changed:

  [Impact]
  
  Downloads fail if:
  
  - there is at least one package each with Size and no size on a mirror
  - a package without a Size field is larger than a package with a Size field 
that's currently in the pipeline
  
  Also, this was silent, we need to add an error so people fix repos. For
- hirsute, this is a warning; for hirsute+1 it's an error so people's CI
- fails on them and doesn't "succeed with warnings"
+ hirsute and earlier, this is a warning; for hirsute+1 it's an error so
+ people's CI fails on them and doesn't "succeed with warnings"
  
  [Test plan]
  
  We have included a test case in the apt integration tests, which
  downloads three packages a, b, c where b is largest and has no Size
  field. With 2.2.2, it fails; with 2.2.3 it succceeds.
  
  We have also added a test case that a warning is shown.
  
  [Where problems could occur]
  Problems can only occur if you try to download packages without a Size field, 
as that is the only place code changes (adding code guarded with if ... Size 
... == 0; 0 being unknown size).
  
  [Other changes]
  2.2.3 includes the same change as 2.2.2ubuntu1
  
  [Original bug report]
  
  1) Ubuntu 18.04.5 LTS
  
  2) apt 1.6.12ubuntu0.2
  
  3) What you expected to happen
  
  I set a custom set of repositories in /etc/apt/sources.list and then I
  run "apt install <list of packages>". I expect the command to download
  and install the packages.
  
  4) What happened instead
  
  "apt install ..." fails during the download phase with "File has
  unexpected size ...."
  
  5) What I've established trying to debug the issue:
  
  - Disabling http pipelining resolves the issue: "apt 
-oAcquire::http::Pipeline-Depth=0 install ..."
  - All the packages, and repo metadata in the referenced repositories is 
correct
  - The issue is easily reproducible in my setup with different repositories
  - tcpdump shows that requests and responses are in the correct order, and 
contain the correct data
  
  More details about the issue:
  https://projects.theforeman.org/issues/32178
  
  With all the above in mind, it appears that this must be a bug in apt's http 
pipeline handling.
  It seem that apt is trying to match a request to do wrong response, and size 
doesn't match.
  
  I've attached an example log, where the error pops up for multiple
  packages, and they all appear to be compared to one size (86464 bytes).
  That size is correct for one of the package being downloaded, but
  somehow apt is trying to match to multiple other packages.

-- 
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1921626

Title:
  size mismatch error if request of unknown size is larger than others

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/apt/+bug/1921626/+subscriptions

-- 
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs

Reply via email to