We just hit this bug again, so it is clearly not fixed yet. Attaching
another syslog. It seems to be triggered by a combination of echo 3 >
/proc/sys/vm/drop_caches and destroying cgroups, but I have yet to find
a reliable way of reproducing it.
** Attachment added: "syslog.txt"
https://bugs.l
Here is the complete Ooops:
[134346.139427] BUG: unable to handle kernel NULL pointer dereference at
0104
[134346.139570] IP: [] vmballoon_work+0x283/0x767 [vmw_balloon]
[134346.139715] *pdpt = 35347001 *pde =
[134346.139804] Oops: 0002 [#1] SMP
[134346.139857] Modu
Public bug reported:
Dear Maintainers
I have encountered a kernel oops, which causes the VM to hard hang. This
is an Ubuntu VM running on an ESXi 5.5 host. The hang happens regularly
(as in every few days). There is some memory pressure on the host, which
explain the ballooning.
ProblemType: Bug
I have tested with v4.9-rc2, and been unable to reproduce the bug there.
However, I haven't found any reliable way to reproduce the bug on the
current kernel, so I am not completely certain that the bug is not
present in v4.9-rc2.
For now, I have tagged the bug `kernel-fixed-upstream`, if this is
Public bug reported:
Apologize in advance is anything is missing from this bug report.
After upgrading to 4.4.0-45 we have started to experience random kernel
lockups. I have attached a sample from the syslog which I managed to
catch after one of these events. In other cases, nothing was written
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