Date: Tue, 11 May 1999 04:03:21 -0700 (PDT) From: "Jordan K. Hubbard" <jkh@FreeBSD.org> To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/dev/dpt dpt_control.c Message-ID: <199905111103.EAA72879@freefall.freebsd.org>
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jkh 1999/05/11 04:03:21 PDT
Modified files:
sys/dev/dpt dpt_control.c
Log:
During probe, the page lockdown code in dpt_control.c does some
bad math: it does not handle page-boundary conditions, and will not
end up mapping all of the requested addresses. This will cause a panic:
page fault during probe on some systems. I have a machine that will
panic every time (when using the dpt driver) on kernel probe when there
are 5 drives installed. When there are 4 drives, it is fine.
Fix is to always allocate/deallocate an extra page.
There is also a bonus splx() fix on an early error return.
Submitted by: Mark J. Taylor <mtaylor@cybernet.com>
PR: 9367
Revision Changes Path
1.11 +4 -2 src/sys/dev/dpt/dpt_control.c
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