[Bug 227664] mps(4) regression makes the system unbootable

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=227664

Mark Linimon  changed:

   What|Removed |Added

   Assignee|b...@freebsd.org|s...@freebsd.org

--- Comment #2 from Mark Linimon  ---
Over to the committer of the MFC in question (r319446).

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[Bug 227664] mps(4) regression makes the system unbootable

[bugzilla-noreply]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=227664

--- Comment #1 from Nicolas Braud-Santoni  ---
The regression was likely introduced by the following commit, before 11.1-RC1:

6ec4b0641762d521d99545fd95f16cb05c65bec3 Thu Jun  1 16:55:03 2017
   MFC r318895: Fix several problems with mapping code in mps(4).
   MFC r318896: Fix several problems with mapping code in mpr(4).

I've encountered issues building bootable ISOs from a specific checkout of
`src/`, so I cannot easily check it right now.

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[Bug 227664] mps(4) regression makes the system unbootable

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=227664

Mark Linimon  changed:

   What|Removed |Added

   Keywords||regression

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[Bug 227664] mps(4) regression makes the system unbootable

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=227664

Bug ID: 227664
   Summary: mps(4) regression makes the system unbootable
   Product: Base System
   Version: 11.1-RELEASE
  Hardware: amd64
OS: Any
Status: New
  Severity: Affects Some People
  Priority: ---
 Component: kern
  Assignee: b...@freebsd.org
  Reporter: nico...@braud-santoni.eu
CC: f...@foxiepa.ws

Created attachment 192692
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=192692=edit
Console log on HardenedBSD 11-STABLE v1100055.1

Hi,

On 11.1-RELEASE, and CURRENT, the mps(4) driver goes into an infinite loop of
rebooting the controller, at boot time, hanging the kernel until it eventually
panics.

I can systematically reproduce the issue on a Dell Poweredge R410 server, and I
bisected the regression to somewhere between 11.0-RELEASE and 11.1-RC3; I will
bisect it further tomorrow.

Furthermore, Rachel (in CC) encountered this regression independently.
@Rachel: Please provide info on the hardware you encountered this on.

Please find attached a screenshot of the system's console, from HardenedBSD's
11-STABLE, as I forgot to take some while bisecting the issue (but the log
messages where, if not identical, at least very similar).


Best,

  nicoo

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