Re: [patch] x86-64 ext2/ext3 datestamp problem

[H. Peter Anvin]

Markus Rechberger wrote:
> Hi,
>
> there is an issue with ext2/ext3 date stamps, if someone creates a file
> with a timestamp between 1902 and 1970(epoch 0) it will overflow and
> result in a higher date than 2038.
>
> $ touch --date "1905-01-01" test
> $ ls -lah test
> -rw-r--r-- 1 root root 0 Jan  1  1905 test (this is a cached value here)
> (remount the partition/clear the cache)
> $ ls -lah test
> -rw-r--r-- 1 root root 0 Feb  6  2041 test
>
> 10000101101111001100011001110000 .. -2051226000 (1905)
> 10000101101111001100011001110000 .. 2243741296 (2041)
>
> this was tested against linus git tree

I believe the timestamp fields in ext2/ext3 are defined as unsigned.

	-hpa
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/