*** This bug is a duplicate of bug 1674838 ***
https://bugs.launchpad.net/bugs/1674838
** This bug has been marked a duplicate of bug 1674838
kernel BUG at /build/linux-7LGLH_/linux-4.10.0/include/linux/swapops.h:129
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https://bugs.launchpad.net/bugs/1683091
Title:
The whole system froze for something like 30 seconds, then a process
got killed
Status in linux package in Ubuntu:
Incomplete
Bug description:
Upgraded from xenial to zesty recently.
I was using a Firefox instance, one which is a part of Tor Browser
Bundled. First, the application window grayed out, then the whole
system froze for something like 30 seconds (I tried to switch to VT1
to no avail), then the process got killed.
Well, not exactly killed.
The grayed-out window is still there, `xprop | grep PID` and clicking
on it gives:
```
_NET_WM_PID(CARDINAL) = 13
```
PID 13 is a child of kthreadd:
```
$ ps -A | awk '$1 == "13" { print }'
13 ? 00:00:00 cpuhp/1
```
And this is how the relevant part of `ps -AH` with the "killed"
process looks like:
```
5709 pts/11 00:00:00 firejail
5710 pts/11 00:00:00 firejail
5725 pts/11 00:00:00 bash
5736 pts/11 00:56:49 firefox <defunct>
5769 pts/11 00:00:24 tor
```
EDIT: Launchpad doesn't preserve whitespace apparently, so I'm adding
the output above as ps.log.
I checked syslog and dmesg. Both of them have an interesting and
identical message, which I add as dmesg.log.
I also add the output of `cat /proc/version_signature` as version.log.
I don't think `sudo lspci -vnvn` is relevant here, so I'm not gonna
share it unless absolutely necessary.
The crashed process will be there for something like 2 or 3 days at
least (I don't restart my laptop often), so feel free to ask me to
manipulate or query it somehow, if necessary.
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