From: Eric Wong <e@80x24.org>
Date: Wed, 8 May 2019 19:04:17 +0000 (+0000)
Subject: DS: epoll: fix misordered EPOLL_CTL_DEL call
X-Git-Tag: v1.2.0~296^2
X-Git-Url: http://www.git.stargrave.org/?a=commitdiff_plain;h=90c5a78c8f6239b27c32b816d1cd029196ba2fe2;hp=90c5a78c8f6239b27c32b816d1cd029196ba2fe2;p=public-inbox.git

DS: epoll: fix misordered EPOLL_CTL_DEL call

Any operations on an fd after POSIX::close() are invalid, so
epoll_ctl will fail.  Worse off, in a multi-threaded Perl, the
fd may be reused by another thread and EPOLL_CTL_DEL can hit the
wrong file description as a result.

cf. https://rt.cpan.org/Ticket/Display.html?id=129487
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