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SubjectRe: 2.2 PATCH: check return from copy_*_user in fs/pipe.c

Zack Weinberg writes:
> The anonymous pipe code in 2.2 does not check the return value of
> copy_*_user. This can lead to silent loss of data.

I remember Andrew Tridgell (cc:'d) spotting this a long time
ago, and we didn't fix it, and I forget what the reason was.

Andrew?

Later,
David S. Miller
davem@redhat.com
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