Public bug reported:
parent report :
https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1656065
from parent:
```
Hello Robie.
Unfortunately, this problem appeared again. Today, I have had Firefox
enabled with just two tabs: YouTube and Google Translate. Suddenly,
system start to slow down, disk diode was... red all the time, mouse
cursor moved slowly etc. After a couple of minutes, I managed to start
terminal and used '$ killall firefox' command, which helped -- system
started to work faster again, clicking e.g. on a file, opened Mousepad
almost immediately, in milliseconds etc.
Log files (such as '/var/log/syslog' or '/var/log/kern.log') contains:
✓ Sep 4 13:46:00 holycross kernel: [10194.439105] Chrome_~dThread[3599]:
segfault at 0 ip b03f6b24 sp afaa1040 error 6 in libxul.so[afb73000+570f000]
✓ Sep 4 13:46:00 holycross kernel: [10195.084439] Chrome_~dThread[4040]:
segfault at 0 ip b042fb24 sp afada040 error 6 in libxul.so[afbac000+570f000]
As we can see, there is a problem in 'libxul.so'. (See bug title.)
Firefox version: 55.0.2 (32-bit), e10s enabled (4. processes; changed
from 2. after update), four addons, no Flash. RAM memory checked with
memtest64 - no problems.
I will keep an eye on this, because of a couple of months without
problem. Maybe it was just an accident?
Thanks, best regards.
```
I can confirm this bug for
> ii firefox 59.0.2+build1-0ubuntu0.16.04.3
> amd64 Safe and easy web browser from Mozilla
at Ubuntu16.04.4 LTS.
```
# dmesg
[14428059.786531] Chrome_~dThread[20444]: segfault at 0 ip 00007f4c6ce2ac26 sp
00007f4c6af2eaf0 error 6 in libxul.so[7f4c6bff8000+580f000]
[14428067.756104] Chrome_~dThread[20745]: segfault at 0 ip 00007f1a0892ac26 sp
00007f1a06a2eaf0 error 6 in libxul.so[7f1a07af8000+580f000]
[14428067.756260] Chrome_~dThread[20829]: segfault at 0 ip 00007f5fe362ac26 sp
00007f5fe172eaf0 error 6 in libxul.so[7f5fe27f8000+580f000]
```
** Affects: firefox (Ubuntu)
Importance: Undecided
Status: New
--
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to firefox in Ubuntu.
https://bugs.launchpad.net/bugs/1766875
Title:
Firefox and plugin-container (Chrome_ChildThr): segfault at 0 ip, sp
error 6 in plugin-container/libxul.so
Status in firefox package in Ubuntu:
New
Bug description:
parent report :
https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1656065
from parent:
```
Hello Robie.
Unfortunately, this problem appeared again. Today, I have had Firefox
enabled with just two tabs: YouTube and Google Translate. Suddenly,
system start to slow down, disk diode was... red all the time, mouse
cursor moved slowly etc. After a couple of minutes, I managed to start
terminal and used '$ killall firefox' command, which helped -- system
started to work faster again, clicking e.g. on a file, opened Mousepad
almost immediately, in milliseconds etc.
Log files (such as '/var/log/syslog' or '/var/log/kern.log') contains:
✓ Sep 4 13:46:00 holycross kernel: [10194.439105] Chrome_~dThread[3599]:
segfault at 0 ip b03f6b24 sp afaa1040 error 6 in libxul.so[afb73000+570f000]
✓ Sep 4 13:46:00 holycross kernel: [10195.084439] Chrome_~dThread[4040]:
segfault at 0 ip b042fb24 sp afada040 error 6 in libxul.so[afbac000+570f000]
As we can see, there is a problem in 'libxul.so'. (See bug title.)
Firefox version: 55.0.2 (32-bit), e10s enabled (4. processes; changed
from 2. after update), four addons, no Flash. RAM memory checked with
memtest64 - no problems.
I will keep an eye on this, because of a couple of months without
problem. Maybe it was just an accident?
Thanks, best regards.
```
I can confirm this bug for
> ii firefox 59.0.2+build1-0ubuntu0.16.04.3
amd64 Safe and easy web browser from Mozilla
at Ubuntu16.04.4 LTS.
```
# dmesg
[14428059.786531] Chrome_~dThread[20444]: segfault at 0 ip 00007f4c6ce2ac26
sp 00007f4c6af2eaf0 error 6 in libxul.so[7f4c6bff8000+580f000]
[14428067.756104] Chrome_~dThread[20745]: segfault at 0 ip 00007f1a0892ac26
sp 00007f1a06a2eaf0 error 6 in libxul.so[7f1a07af8000+580f000]
[14428067.756260] Chrome_~dThread[20829]: segfault at 0 ip 00007f5fe362ac26
sp 00007f5fe172eaf0 error 6 in libxul.so[7f5fe27f8000+580f000]
```
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