Bug 175791 - [panic] Fatal trap 12: page fault while in kernel mode at seemingly random times.
Summary: [panic] Fatal trap 12: page fault while in kernel mode at seemingly random ti...
Status: Closed Not Enough Information
Alias: None
Product: Base System
Classification: Unclassified
Component: kern (show other bugs)
Version: 9.1-RELEASE
Hardware: Any Any
: Normal Affects Only Me
Assignee: freebsd-bugs mailing list
Depends on:
Reported: 2013-02-03 02:50 UTC by Dimitri Semitsoglou-Tsiapos
Modified: 2019-02-03 18:55 UTC (History)
2 users (show)

See Also:


Note You need to log in before you can comment on or make changes to this bug.
Description Dimitri Semitsoglou-Tsiapos 2013-02-03 02:50:00 UTC
System seems to crash at random times, during casual desktop use.

During the last crash the system was very low on Free memory (around
100M according to `top`), while swap was not being used.

I'm not sure if the backtrace [1] contains the desired output (seems
to start at /usr/src/sys/kern/kern_shutdown.c).  When running kgdb in
/var/crash the output points to ULE instead [2].

[1] http://sprunge.us/CjHC
[2] http://sprunge.us/SMPa
Comment 1 Fabian Keil 2017-05-25 12:09:31 UTC
The links no longer lead to relevant information.
If you still have the data, you may want to attach it to the report directly.

It would also be useful to know if you can still reproduce the issue
with a more recent FreeBSD version.
Comment 2 Eitan Adler freebsd_committer freebsd_triage 2018-05-20 23:49:58 UTC
For bugs matching the following conditions:
- Status == In Progress
- Assignee == "bugs@FreeBSD.org"
- Last Modified Year <= 2017

- Set Status to "Open"
Comment 3 Andriy Voskoboinyk freebsd_committer 2019-02-03 18:55:21 UTC
No backtrace and / or any additional information about the panic; please reopen when crash dumps / backtrace / some additional system configuration will be available.

Kernel dump configuration: https://www.freebsd.org/doc/en/books/developers-handbook/kerneldebug.html
Backtare extraction from the dump: https://www.freebsd.org/doc/en/books/developers-handbook/kerneldebug-gdb.html