2.1.8: DMA crossing 64-K boundary

Steffen Zahn (zahn@berlin.snafu.de)
Sat, 9 Nov 1996 14:42:51 +0100


Hello,

while executing the command
tar cvMf /dev/fd0 linux2021.tpz
the following the error messages below appeared in the syslog.
This is Kernel version 2.1.8, floppy compiled into kernel. I already
reported the same error for 2.1.7. This does not always happen, I had to
do the tar command several times, and I started some other system activities
in parallel (netscape).

Regards
Steffen

Nov 9 14:28:04 zahn linux: DMA xfer crosses 64KB boundary in end of make_raw_request [1] c079e800-c07a3000
Nov 9 14:28:04 zahn linux: DMA crossing 64-K boundary c079e800-c07a3000
Nov 9 14:28:04 zahn linux: end_request: I/O error, dev 02:00, sector 1548
Nov 9 14:28:04 zahn linux: DMA xfer crosses 64KB boundary in end of make_raw_request [1] c079ec00-c07a3000
Nov 9 14:28:05 zahn linux: DMA crossing 64-K boundary c079ec00-c07a3000
Nov 9 14:28:05 zahn linux: end_request: I/O error, dev 02:00, sector 1550
Nov 9 14:28:05 zahn linux: DMA xfer crosses 64KB boundary in end of make_raw_request [1] c079f000-c07a3000
Nov 9 14:28:05 zahn linux: DMA crossing 64-K boundary c079f000-c07a3000
Nov 9 14:28:05 zahn linux: end_request: I/O error, dev 02:00, sector 1552
Nov 9 14:28:05 zahn linux: DMA xfer crosses 64KB boundary in end of make_raw_request [1] c079f400-c07a3000
Nov 9 14:28:05 zahn linux: DMA crossing 64-K boundary c079f400-c07a3000
Nov 9 14:28:05 zahn linux: end_request: I/O error, dev 02:00, sector 1554
Nov 9 14:28:05 zahn linux: DMA xfer crosses 64KB boundary in end of make_raw_request [1] c079f800-c07a3000
Nov 9 14:28:06 zahn linux: DMA crossing 64-K boundary c079f800-c07a3000
Nov 9 14:28:06 zahn linux: end_request: I/O error, dev 02:00, sector 1556
Nov 9 14:28:06 zahn linux: DMA xfer crosses 64KB boundary in end of make_raw_request [1] c079fc00-c07a3000
Nov 9 14:28:06 zahn linux: DMA crossing 64-K boundary c079fc00-c07a3000
Nov 9 14:28:06 zahn linux: end_request: I/O error, dev 02:00, sector 1558
Nov 9 14:28:29 zahn linux: DMA xfer crosses 64KB boundary in end of make_raw_request [1] c0d5e000-c0d62800
Nov 9 14:28:29 zahn linux: DMA crossing 64-K boundary c0d5e000-c0d62800
Nov 9 14:28:29 zahn linux: end_request: I/O error, dev 02:00, sector 2808
Nov 9 14:28:29 zahn linux: DMA xfer crosses 64KB boundary in end of make_raw_request [1] c0d5e400-c0d62800
Nov 9 14:28:30 zahn linux: DMA crossing 64-K boundary c0d5e400-c0d62800
Nov 9 14:28:30 zahn linux: end_request: I/O error, dev 02:00, sector 2810
Nov 9 14:28:30 zahn linux: DMA xfer crosses 64KB boundary in end of make_raw_request [1] c0d5e800-c0d62800
Nov 9 14:28:30 zahn linux: DMA crossing 64-K boundary c0d5e800-c0d62800
Nov 9 14:28:30 zahn linux: end_request: I/O error, dev 02:00, sector 2812
Nov 9 14:28:30 zahn linux: DMA xfer crosses 64KB boundary in end of make_raw_request [1] c0d5ec00-c0d62800
Nov 9 14:28:31 zahn linux: DMA crossing 64-K boundary c0d5ec00-c0d62800
Nov 9 14:28:31 zahn linux: end_request: I/O error, dev 02:00, sector 2814
Nov 9 14:28:31 zahn linux: DMA xfer crosses 64KB boundary in end of make_raw_request [1] c0d5f000-c0d62800
Nov 9 14:28:32 zahn linux: DMA crossing 64-K boundary c0d5f000-c0d62800
Nov 9 14:28:32 zahn linux: end_request: I/O error, dev 02:00, sector 2816
Nov 9 14:28:32 zahn linux: DMA xfer crosses 64KB boundary in end of make_raw_request [1] c0d5f400-c0d62800
Nov 9 14:28:32 zahn linux: DMA crossing 64-K boundary c0d5f400-c0d62800
Nov 9 14:28:32 zahn linux: end_request: I/O error, dev 02:00, sector 2818
Nov 9 14:28:32 zahn linux: DMA xfer crosses 64KB boundary in end of make_raw_request [1] c0d5f800-c0d62800
Nov 9 14:28:33 zahn linux: DMA crossing 64-K boundary c0d5f800-c0d62800
Nov 9 14:28:33 zahn linux: end_request: I/O error, dev 02:00, sector 2820
Nov 9 14:28:33 zahn linux: DMA xfer crosses 64KB boundary in end of make_raw_request [1] c0d5fc00-c0d62800
Nov 9 14:28:34 zahn linux: DMA crossing 64-K boundary c0d5fc00-c0d62800
Nov 9 14:28:34 zahn linux: end_request: I/O error, dev 02:00, sector 2822

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