Public bug reported:
I am trying to profile apache2 with aa-logprof. As part of that I ran
into the following problem
root@tim-X220:~# aa-logprof -m LOGMARK1
Reading log entries from /var/log/syslog.
Updating AppArmor profiles in /etc/apparmor.d.
Traceback (most recent call last):
File "/usr/sbin/aa-logprof", line 52, in <module>
apparmor.do_logprof_pass(logmark)
File "/usr/lib/python3/dist-packages/apparmor/aa.py", line 2262, in
do_logprof_pass
handle_children('', '', root)
File "/usr/lib/python3/dist-packages/apparmor/aa.py", line 1237, in
handle_children
sev_db.load_variables(profile)
File "/usr/lib/python3/dist-packages/apparmor/severity.py", line 180, in
load_variables
for line in f_in:
File "/usr/lib/python3.4/codecs.py", line 704, in __next__
return next(self.reader)
File "/usr/lib/python3.4/codecs.py", line 635, in __next__
line = self.readline()
File "/usr/lib/python3.4/codecs.py", line 548, in readline
data = self.read(readsize, firstline=True)
File "/usr/lib/python3.4/codecs.py", line 494, in read
newchars, decodedbytes = self.decode(data, self.errors)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xc6 in position 24:
invalid continuation byte
When I trace back I find that on line 1237 the path to binary is passed
to "load_variables" when it expects the path to the profile related to a
binary. As a result it opens the binary and tries to process it as a
profile. I suspect this but will appear as a range of Unicode style
errors depending on what executable is being passed.
The fix is fairly simple. On line 1237 change
sev_db.load_variables(profile)
to
sev_db.load_variables(get_profile_filename(profile))
Attached is a patch for this.
** Affects: apparmor (Ubuntu)
Importance: Undecided
Status: New
** Patch added: "profile_path.patch"
https://bugs.launchpad.net/bugs/1324154/+attachment/4121491/+files/profile_path.patch
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https://bugs.launchpad.net/bugs/1324154
Title:
aa-logprof is trying to process a binary instead of the profile
attached to the binary
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