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philcrump
PostPosted: Wed May 13, 2015 5:38 am 
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Joined: Wed May 13, 2015 5:18 am
Posts: 2
Just a heads-up: starting an unprivileged container on the 4.0.2 kernel that Linode is now defaulting to, will cause a kernel panic.

4.0.1 is not affected.

EDIT: upstream 4.0.3 and 4.0.4 are still affected.

Reference: https://lists.linuxcontainers.org/piper ... 09201.html

This has been experienced on a Ubuntu 14.04 Linode, running kernel 4.0.2-x86_64-linode56, with LXC 1.1.2

Regards,
Phil


Last edited by philcrump on Wed May 20, 2015 4:59 am, edited 2 times in total.

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AliceWonder
PostPosted: Thu May 14, 2015 3:03 am 
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Joined: Sat Mar 14, 2015 12:13 am
Posts: 19
Just found out about this and came to see if it had been reported. Glad to see it has been.
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levlaz
PostPosted: Thu May 21, 2015 11:18 am 
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Linode Staff

Joined: Mon Aug 18, 2014 2:43 pm
Posts: 35
Website: https://levlaz.org
Location: Absecon, NJ
shinji wrote:
FYI: While there is no 4.0.3 or 4.0.4 kernel available I thought I should mention that it is still broken there.

For anyone running their own kernels and want to apply the required patches while we wait here you go.

https://git.kernel.org/cgit/linux/kerne ... 9ea14f0953
https://git.kernel.org/cgit/linux/kerne ... b1dc8ea4ae


Hello!

Do you know when/if this is going to be patched in the upstream kernel?

_________________
Best,
Lev
https://levlaz.org
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philcrump
PostPosted: Sun Jun 07, 2015 9:06 am 
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Joined: Wed May 13, 2015 5:18 am
Posts: 2
It looks like the patches have landed in 4.0.5

https://lkml.org/lkml/2015/6/6/107

Quote:
Eric W. Biederman (2):
mnt: Fail collect_mounts when applied to unmounted mounts
fs_pin: Allow for the possibility that m_list or s_list go unused.


Regards,
Phil
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shinji
PostPosted: Wed Jun 10, 2015 4:19 pm 
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Joined: Thu Feb 25, 2010 9:24 pm
Posts: 3
I can confirm 4.0.5 does resolve it. I've been running it via pvgrub since this morning. Looks like 4.0.5 has been added to the available kernels list but currently still defaulting to 4.0.4 for a bit. Probably still being worked on right now.
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addseo1115
PostPosted: Thu Jun 11, 2015 5:03 am 
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Joined: Thu May 14, 2015 9:47 pm
Posts: 1
Excellent.
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