From: rct@gherkin.frus.com (Bob Tracy)
To: linux-kernel@vger.kernel.org
Cc: linux-scsi@vger.kernel.org
Subject: old ISA DMA bug in 2.6.12?
Date: Tue, 24 Apr 2007 17:01:46 -0500 (CDT) [thread overview]
Message-ID: <20070424220146.2EA64DBA1@gherkin.frus.com> (raw)
I was enjoying yet another session of beating my head against the wall
trying to do useful things with old hardware :-), and managed to cause a
kernel panic by simply trying to mount a cdrom in the context of a DSL-N
installation.
The SCSI host adapter is an Adaptec AHA-1542B, and when I try to mount a
cdrom, I manage to run afoul of the BAD_DMA() check in aha1542.c: the
buffer returned is not in the lower 16 MB of memory.
The same 2.6.12 kernel + hardware combination works fine as long as I
confine my I/O to the hard disk that's also attached to the AHA-1542B.
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next reply other threads:[~2007-04-24 22:01 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-04-24 22:01 Bob Tracy [this message]
[not found] <fa.7m5DEEaYclDeS/YSPViAnSljQHI@ifi.uio.no>
2007-04-24 23:47 ` Robert Hancock
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