Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: firefox (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1495248

Title:
  usr.bin.firefox blocks /dev/shm

Status in firefox package in Ubuntu:
  Confirmed

Bug description:
  When apparmor is activated for Firefox, I get the following log
  messages:

  [28547.841769] audit: type=1400 audit(1442154214.608:109): apparmor="DENIED" 
operation="mknod" profile="/usr/lib/firefox/firefox{,*[^s][^h]}" 
name="/dev/shm/shmfd-mSnoHU" pid=7425 comm
  ="firefox" requested_mask="c" denied_mask="c" fsuid=1111 ouid=1111

  Both /run/shm/shmfd-* and /var/run/shm/shmfd-* are allowed, but not
  /dev/shm/shmfd-*.

  Changing :

  owner /{,var/}run/shm/shmfd-* rw,

  To:

  owner /{dev,{,var/}run}/shm/shmfd-* rw,

  seems to fix the issue.

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