*** This bug is a duplicate of bug 1579135 ***
https://bugs.launchpad.net/bugs/1579135
Note: there is a new test kernel using +jj61 at
http://people.canonical.com/~jj/linux+jj/
This should be the final fix for this issue
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*** This bug is a duplicate of bug 1579135 ***
https://bugs.launchpad.net/bugs/1579135
** This bug has been marked a duplicate of bug 1579135
kernel BUG on snap disconnect from within a snap
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Bug #1579135 looks to be the same kernel trace.
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https://bugs.launchpad.net/bugs/1581990
Title:
Profile reload leads to kernel NULL pointer dereference
To manage notifications about th
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: apparmor (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1581990
Title:
P
can you try the kernel in
http://people.canonical.com/~jj/linux+jj/
yes it is a xenial kernel but it should still work on trusty
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Title:
Profile
If I remember correctly, the first of the oopses was triggered by
"service apparmor reload", whilst the second was triggered by "aa-
enforce /usr/sbin/apache2".
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Here are some of the oopses we've seen:
https://pastebin.canonical.com/162419/
https://pastebin.canonical.com/162420/
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Title:
Profile reload lead
I'm seeing this on a trusty box on the latest linux-image-generic-lts-
xenial. In our case, it's with apache2 rather than dovecot. Is the
debug kernel applicable to trusty?
** Tags added: canonical-is
** Changed in: apparmor (Ubuntu)
Status: Incomplete => New
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Hi Raimund - Could you please try the new debug kernel that John
provided in comment #8? Thank you!
** Changed in: apparmor (Ubuntu)
Status: New => Incomplete
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I have been unable to trigger the first bug reported. Can you attach a
flattened versions of your profile set?
apparmor_parser -p your_profile > flattened_profile
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I have updated the debug kernel at
http://people.canonical.com/~jj/lp1581990/
it adds more debug and fixes the 2nd issue you encountered.
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Title:
That sadly was not very helpful, it died in a completely different place
and didn't trip any of the additional debug.
Would it be possible to try it again?
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root@zeus:~# uname -a
Linux zeus 4.4.0-22-generic #40+lp1581990 SMP Wed May 25 10:18:37 UTC 2016
x86_64 x86_64 x86_64 GNU/Linux
root@zeus:~# aa-status
apparmor module is loaded.
48 profiles are loaded.
12 profiles are in enforce mode.
/sbin/dhclient
/usr/lib/NetworkManager/nm-dhcp-client.a
I have uploaded a debug kernels to
http://people.canonical.com/~jj/lp1581990/
If you could install that and test, hopefully it has enough debug to
track this issue down
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Yes it seems quite reliable for me and I can do some testing.
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Title:
Profile reload leads to kernel NULL pointer dereference
To manage notifica
Are the oops warnings reliable for you? It appears to be a ref count bug
or race and I have not been able to track it down yet. If it is some
what reliable would you be willing to try a debug kernel to help track
the issue down?
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Sorry for the delay.
Actually I wanted to modify the Dovecot profile according to
https://bugs.launchpad.net/ubuntu/+source/apparmor/+bug/1512131/comments/2.
But it also happened before when I tried to aa-enforce the original
profiles.
I have disabled the Dovecot profiles at the moment because of
are these custom/modified dovecot profiles?
what other profiles are loaded?
can you provide the output of aa-status?
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Title:
Profile reload leads
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