[Bug 1495248] [NEW] usr.bin.firefox blocks /dev/shm

[Jean-Philippe Guérard]

Public bug reported:

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.

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

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

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