[SRU Bionic/Focal 0/1] lxd exec fails

[Thadeu Lima de Souza Cascardo]

BugLink: https://bugs.launchpad.net/bugs/1934187

[Impact]
lxd will not work, as lxc exec is not able to set the apparmor confinement and bails out executing inside the container.

[Fix]
Revert upstream commit bfb819ea20ce8bbeeba17e1a6418bf8bda91fc28 ("proc: Check /proc/$pid/attr/ writes against file opener").

[Test case]
lxd basic usage test suite was run.
On a 4.15 kernel, the whole lxd autopkgtest was run.

[Potential regression]
Unprivileged use of PID attributes may be permitted when they shouldn't.


Thadeu Lima de Souza Cascardo (1):
  UBUNTU: SAUCE: Revert "proc: Check /proc/$pid/attr/ writes against
    file opener"

 fs/proc/base.c | 4 ----
 1 file changed, 4 deletions(-)

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2.30.2