Re: dd hangs with SIGINT

[Paul Eggert]

Guillaume Chazarain <address@hidden> writes:

> With recent linux distributions (using NPTL), dd can hang waiting on
> a futex when being killed.

I'm not quite sure how to parse that, but it sounds like a problem
with some part of the system other than "dd", not with "dd" itself.

When "dd" gets a signal, it closes the input and output files, prints
some statistics, and exits.  If it gets a second signal it exits
immediately.  I don't offhand see why this could cause a hang that was
dd's fault.

It sounds like you may need to investigate this on your own host.

You don't mention which version of "dd" you're having the problem
with.  "dd --version" should tell you.