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[Tarim <ubuntuone@xxxxxxxxxxxxxxxxxxxxxx>]

Public bug reported:

Description:    Ubuntu 14.04.3 LTS
Release:        14.04

Ubuntu 3.13.0-65.105-generic 3.13.11-ckt26

  3.13.0-63-generic seems to work fine, but in 3.13.0-65-generic, when
using select; FD_ISSET returns true even when there is no data on a tty
with min=0, time=0.  getchar() returns -1

  Wondering if it's anything to do with the fix for
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1397976 which was
added in 3.13.0-65.105?


  Actually noticed this within sox:
play xx.wav
  hangs due to continually reading the tty (it's not great code - but it showed up the bug).  Whereas:
play xx.wav < /dev/null
  is fine.

  Cheers,
    Tarim

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1502168

Title:
  select's FD_ISSET returns true with no data to read

Status in linux package in Ubuntu:
  New

Bug description:
  Description:    Ubuntu 14.04.3 LTS
  Release:        14.04

  Ubuntu 3.13.0-65.105-generic 3.13.11-ckt26

    3.13.0-63-generic seems to work fine, but in 3.13.0-65-generic, when
  using select; FD_ISSET returns true even when there is no data on a
  tty with min=0, time=0.  getchar() returns -1

    Wondering if it's anything to do with the fix for
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1397976 which was
  added in 3.13.0-65.105?

  
    Actually noticed this within sox:
  play xx.wav
    hangs due to continually reading the tty (it's not great code - but it showed up the bug).  Whereas:
  play xx.wav < /dev/null
    is fine.

    Cheers,
      Tarim

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