[Bug 1853193] Re: copy_file_range test fails with linux 5.3+ on bionic

[Thadeu Lima de Souza Cascardo]

I am sending a proposed patch. I am building a package that includes
that patch on my ppa:cascardo/ppa. I will trigger tests against that and
verify this really fixes the issue.

** Patch added: "disable cross_device_failure test for copy_file_range"
   https://bugs.launchpad.net/ubuntu/+source/glibc/+bug/1853193/+attachment/5385113/+files/test-disable-copy_file_range-cross_device_failure.patch

** Changed in: glibc (Ubuntu Bionic)
       Status: New => In Progress

** Changed in: glibc (Ubuntu Bionic)
     Assignee: (unassigned) => Thadeu Lima de Souza Cascardo (cascardo)

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https://bugs.launchpad.net/bugs/1853193

Title:
  copy_file_range test fails with linux 5.3+ on bionic

Status in glibc package in Ubuntu:
  Invalid
Status in glibc source package in Bionic:
  In Progress

Bug description:
  copy_file_range on linux 5.3 now works across devices, so EXDEV is not
  returned anymore on those cases. glibc, however, tests that is the
  case and its autopkgtest fails, then, when running on linux 5.3.

  glibc 2.30 does not fail in that case anymore, so eoan glibc works
  fine on linux 5.3. However, the change on glibc 2.30 was to remove its
  userspace emulation entirely, and require users to fallback on their
  own.

  https://sourceware.org/bugzilla/show_bug.cgi?id=24744

  Linux commit 5dae222a5ff0c269730393018a5539cc970a4726.

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