This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed-
bionic' to 'verification-done-bionic'. If the problem still exists,
change the tag 'verification-needed-bionic' to 'verification-failed-
bionic'.

If verification is not done by 5 working days from today, this fix will
be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how
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** Tags added: verification-needed-bionic

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https://bugs.launchpad.net/bugs/1813934

Title:
  Vsock connect fails with ENODEV for large CID

Status in Ubuntu on IBM z Systems:
  Fix Committed
Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Bionic:
  Fix Committed
Status in linux source package in Cosmic:
  Fix Committed

Bug description:
  - Problem Descripion:
  Kernel 4.19 introduced a bug in the Vsock protocol when using a large Context 
ID. 

  E.g.
  CID 0xfff000 works correctly but
  CID 0xfff001 fails with ENODEV when trying to connect to the listener.

  The issue now also shows up in Ubuntu 18.04 with 
   -> kernel 4.15.0-44-generic #47-Ubuntu 
  on x86_64 and s390x.

  It is already fixed upstream kernel by:
  
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7fbe078c37aba3088359c9256c1a1d0c3e39ee81

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