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Date: Tue, 24 Apr 2007 17:01:46 -0500 (CDT) From: rct@...rkin.frus.com (Bob Tracy) To: linux-kernel@...r.kernel.org CC: linux-scsi@...r.kernel.org Subject: old ISA DMA bug in 2.6.12? 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. -- ----------------------------------------------------------------------- Bob Tracy WTO + WIPO = DMCA? http://www.anti-dmca.org rct@...s.com ----------------------------------------------------------------------- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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