Messages in this thread | | | From | Sidik Isani <> | Subject | CRAMFS error "attempt to access beyond end of device" | Date | Fri, 29 Jun 2001 13:50:04 -1000 (HST) |
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Hello -
Is there maybe a missing boundary check in cramfs that causes accesses slightly past (up to 24 or 32K?) the end of a device? Here's an example of a cramfs image mounted on a loop device (the same thing happens with other block devices, and when the kernel itself mounts a partition as cramfs-root.)
attempt to access beyond end of device 07:01: rw=0, want=1156, limit=1152 attempt to access beyond end of device 07:01: rw=0, want=1160, limit=1152 attempt to access beyond end of device 07:01: rw=0, want=1164, limit=1152
The messages appear while running "diff -r" against the original tree. The diff itself doesn't find any problems with the filesystem. The size of the cramfs is 1179648 bytes, or exactly 1152 * 1024. My kernel version is 2.4.5, but this behavior has existed since the 2.4.0-test kernels.
If anyone has ideas on this, please let me know.
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