Neil, closing out for now. If it's reproducible with a supported
release/stack, please feel free to reopen.
** Changed in: linux (Ubuntu)
Status: Incomplete => Invalid
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it is not reproducible, and we have seen this issue only once.
as the corrupted pointer is point to supervisor area reserved. I cannot make
sure if it is caused by code logic error or memory corruption.
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Neil, as per https://wiki.ubuntu.com/Kernel/LTSEnablementStack kernel
series 3.19.x is EOL as of August 2016.
If you update to the supported enablement stack as per that article is
this reproducible?
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kernel panic while paging request at 820504022108.
```
[702076.560806] BUG: unable to handle kernel paging request at 820504022108
[702076.564428] IP: [] nf_nat_setup_info+0x236/0x360 [nf_nat]
```
we can see the instructions near the corruption, and rcx=820504022100.
```
crash> dis
Thanks for your suggestion.
This issue is not happened on any update/upgrade, and only happened once.
Because we cannot get any operation path to reproduce it, so test with the
latest upstream kernel cannot help make it clear.
Anyway, I will try to share some more information on current kdump.
Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v4.8 kernel[0].
If this bug is fixed in the mainline kernel, please add the following
tag 'kernel-fixed-upstream'.
If the mainline kernel does not fix
Did this issue start happening after an update/upgrade? Was there a
kernel version where you were not having this particular problem? This
will help determine if the problem you are seeing is the result of a
regression, and when this regression was introduced. If this is a
regression, we can
it was running on ubuntu server and cannot run apport-collect, I
attached the kernel log
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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I attached the kernel log
** Attachment added: "kernel.log"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1615681/+attachment/4725785/+files/dmesg.201608220924
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