I previously reported an ISA DMA issue for the 2.6.12 kernel. The issue persists through at least 2.6.18. SCSI controller is an Adaptec AHA-1542B (ISA). The action "mount -t iso9660 /dev/scd0 /mnt/cdrom -r" produces (cdrom detection messages as various modules autoload, then...) sgpnt[0:1] page c1ee5af0/0x1ee5af0 length 32 Kernel panic - not syncing: Buffer at physical address > 16 Mb used for aha1542 As before, no problems using the sda hard disk (which is the boot drive): everything works reliably until I touch the cdrom drive. I'll be happy to assist with the debugging, but the system with the aha1542 has no development facilities, i.e., I'll have to build test kernels on a different system, and turnaround is going to be slow :-(. Thanks in advance for helping me get this old machine working again. No issues with 2.4 kernels. I have no idea about 2.5 kernels and 2.6 kernels prior to 2.6.12. As for why I didn't report this before now, the aha1542b was in my parts bin until I cobbled a system together approx. two weeks ago, mostly to see if a useful system could still be had using legacy hardware and modern GNU/Linux software. I'm happy to report the answer is mostly "yes". -- ----------------------------------------------------------------------- Bob Tracy WTO + WIPO = DMCA? http://www.anti-dmca.org rct@xxxxxxxx ----------------------------------------------------------------------- - To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
