Upstream patch is here:
https://gitlab.com/apparmor/apparmor/merge_requests/385
** Changed in: apparmor
Status: New => In Progress
** Changed in: apparmor (Ubuntu)
Status: New => Triaged
** Also affects: apparmor (Ubuntu Eoan)
Importance: Undecided
Status: Triaged
** Also affects: apparmor (Ubuntu Disco)
Importance: Undecided
Status: New
** Changed in: apparmor (Ubuntu Eoan)
Assignee: (unassigned) => Jamie Strandboge (jdstrand)
** Changed in: apparmor (Ubuntu Disco)
Assignee: (unassigned) => Jamie Strandboge (jdstrand)
** Changed in: apparmor (Ubuntu Eoan)
Status: Triaged => In Progress
** Changed in: apparmor (Ubuntu Disco)
Status: New => Triaged
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https://bugs.launchpad.net/bugs/1820068
Title:
specifying -O no-expr-simplify results in cache miss
Status in AppArmor:
In Progress
Status in apparmor package in Ubuntu:
In Progress
Status in apparmor source package in Disco:
Triaged
Status in apparmor source package in Eoan:
In Progress
Bug description:
With 2.13.2 and the most recent testsuite patches from the 2.13
branch, I find that the cache works correctly when no options are
specified. Eg
# setup
$ mkdir -p /tmp/aa/cache /tmp/aa/profiles
$ cp /etc/apparmor.d/sbin.dhclient /tmp/aa/profiles/
# no options, no cache, expect a miss and to write
$ /sbin/apparmor_parser -k --write-cache --cache-loc=/tmp/aa/cache
--skip-kernel-load --add -- /tmp/aa/profiles
Cache: added primary location '/tmp/aa/cache'
Cache miss: /tmp/aa/profiles/sbin.dhclient
Wrote cache: /tmp/aa/cache/26b63962.0/sbin.dhclient
# no options, cache, expect a hit
$ /sbin/apparmor_parser -k --write-cache --cache-loc=/tmp/aa/cache
--skip-kernel-load --add -- /tmp/aa/profiles
Cache: added primary location '/tmp/aa/cache'
Cache hit: /tmp/aa/cache/26b63962.0/sbin.dhclient
# reset
$ rm -rf /tmp/aa/cache/*
# options, no cache, expect a miss and to write
$ /sbin/apparmor_parser -k --write-cache --cache-loc=/tmp/aa/cache
--skip-kernel-load -O no-expr-simplify --add -- /tmp/aa/profiles
Cache: added primary location '/tmp/aa/cache'
Cache miss: /tmp/aa/profiles/sbin.dhclient
Wrote cache: /tmp/aa/cache/26b63962.0/sbin.dhclient
# options, cache, expect a hit
$ /sbin/apparmor_parser -k --write-cache --cache-loc=/tmp/aa/cache
--skip-kernel-load -O no-expr-simplify --add -- /tmp/aa/profiles
Cache: added primary location '/tmp/aa/cache'
Cache miss: /tmp/aa/profiles/sbin.dhclient # SHOULD BE A HIT
Wrote cache: /tmp/aa/cache/26b63962.0/sbin.dhclient
Same thing happens if omitting -O no-expr-simplify but add Optimize
=no-expr-simplify to /etc/apparmor/parser.conf.
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