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Subject: [Bug 219000] Integer underflow in efipart_realstrategy when I/O
 starts after end of disk
Date: Mon, 01 May 2017 14:41:07 +0000
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D219000

            Bug ID: 219000
           Summary: Integer underflow in efipart_realstrategy when I/O
                    starts after end of disk
           Product: Base System
           Version: CURRENT
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: kern
          Assignee: freebsd-bugs@FreeBSD.org
          Reporter: emc2@metricspace.net

The efipart_realstrategy function (which performs I/O in the UEFI boot load=
er)
has an integer underflow when the I/O operation starts after the end of the
disk.=20=20

This normally causes a crash.

--=20
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