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[Bug 1454142] Re: [regression] mirscreencast 0.13 and later gives error and exception (std::exception::what: Failed to mmap buffer 13, "Permission denied")

 

** Changed in: mir
    Milestone: 0.15.0 => 0.16.0

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https://bugs.launchpad.net/bugs/1454142

Title:
  [regression] mirscreencast 0.13 and later gives error and exception
  (std::exception::what: Failed to mmap buffer 13, "Permission denied")

Status in Mir:
  Triaged
Status in Mir 0.13 series:
  Triaged
Status in mir package in Ubuntu:
  Confirmed

Bug description:
  [regression] mirscreencast 0.13 and later throws an exception:

  # bin/mirscreencast -n1
  MIR_CLIENT_PLATFORM_PATH=bin/../lib/client-modules/
  MIR_SERVER_PLATFORM_PATH=bin/../lib/server-modules/
  MIR_SERVER_PLATFORM_INPUT_LIB=bin/../lib/server-modules/input-stub.so
  LD_LIBRARY_PATH=bin/../lib
  exec=bin/.mirscreencast-uninstalled
  [1431419911.659329] <ERROR> MirBufferStreamAPI: Caught exception at client library boundary (in mir_buffer_stream_get_graphics_region): /home/dan/bzr/mir/dev/src/platforms/mesa/client/client_buffer.cpp(63): Throw in function {anonymous}::ShmMemoryRegion::ShmMemoryRegion(const std::shared_ptr<mir::client::mesa::BufferFileOps>&, int, const mir::geometry::Size&, mir::geometry::Stride, MirPixelFormat)
  Dynamic exception type: N5boost16exception_detail10clone_implINS0_19error_info_injectorISt13runtime_errorEEEE
  std::exception::what: Failed to mmap buffer
  13, "Permission denied"

  And that's running as root(!)

  Workaround: Use the installed version 0.12.1 of mirscreencast on
  vivid, which works still.

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