Subject: kern/4172: panic: bha_init_ccb: can't create DMA maps
To: None <firstname.lastname@example.org>
From: Brad Spencer <email@example.com>
Date: 09/27/1997 17:02:14
>Synopsis: panic: bha_init_ccb: can't create DMA maps
>Responsible: kern-bug-people (Kernel Bug People)
>Arrival-Date: Sat Sep 27 14:05:01 1997
>Originator: Brad Spencer
At home one weekend
>Release: 9/26/97 1.2G i386
trying to update to 1.2G from 9/26 source from the system:
System: NetBSD anduin.eldar.org 1.2B NetBSD 1.2B (ANDUIN) #13: Sat Dec 14 11:00:39 EST 1996 firstname.lastname@example.org:/usr/src/sys/arch/i386/compile/ANDUIN i386
A reasonable amount of disk activity will panic the system
with the following panic:
panic: bha_init_ccb: can't create DMA maps
Given 48MB of core and 3 swap partitions and two BT946 controllers.
Started the X server [16 bit color, 1280x1024 with a nice picture in
the root window], then Netscape 4, then Executor. As Executor starts,
some swapping occures, the system then "freezes", lots of disk
activity occures as the panic progresses, and a reboot.
The following message is printed on reboot during savecore.
Sep 27 16:15:44 anduin savecore: reboot after panic: bha_init_ccb: can't create DMA maps
No idea. However, it appears that the panic doesn't happen
until swap occures [this may be false, as the disks were quite a bit
more active by this time, activity may be the problem]. Setting the
swaps up so that they are not interlaced [that is, all at a different
priority level] only delays the problem.
Crash dump available upon request.