[Bug 240853] Any moderate I/O panics the kernel when MAC_BIBA + multilabel is enabled

bugzilla-noreply at freebsd.org bugzilla-noreply at freebsd.org
Fri Sep 27 07:07:53 UTC 2019


https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=240853

Kubilay Kocak <koobs at FreeBSD.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           See Also|                            |https://bugs.freebsd.org/bu
                   |                            |gzilla/show_bug.cgi?id=2309
                   |                            |62
           Keywords|                            |crash, needs-qa
           Assignee|bugs at FreeBSD.org            |fs at FreeBSD.org
             Status|New                         |Open
                 CC|                            |fs at FreeBSD.org,
                   |                            |mckusick at FreeBSD.org

--- Comment #1 from Kubilay Kocak <koobs at FreeBSD.org> ---
Thank you for your report

Could you please include more information, including:

- Exact FreeBSD version (uname -a)
- /var/run/dmesg.boot output (as an attachment)
- Check and confirm that the file system is clean (fsck -fy in single user), or
report back if it is not
- See if you can obtain a kernel panic backtrace [1], and in particular try to
catch the initial "panic message"
- Clarify whether or not the panic is reproducible *without* MAC_BIBA and/or
multilabel enabled (test each combination)

[1]
https://www.freebsd.org/doc/en/books/developers-handbook/kerneldebug.html#kerneldebug-obtain

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