On 2020-02-03 22:03, Max Neunhöffer wrote:
Hi Roman,
Thanks for your quick response. This sounds fantastic!
The epollbug.c program was originally written by my colleague Lars
Maier and then modified by me and subsequently by Chris Kohlhoff. Note
that the bugzilla bug report contains altogether three variants which
test epoll_wait/epoll_ctl in three different ways. It might be
sensible to take all three variants for the test suite.
I checked 3 variants, they do same things: epoll_ctl() races against
epoll_wait(), and this is exactly the bug reproduction, regardless
actual read() from a file descriptor or EPOLLET flag set.
I cannot imagine that any of the three authors would object to this, I
definitely do not, the other two are on Cc in this email and can speak
for themselves.
I adapted the logic from epollbug.c and included it into
epoll_wakeup_test.c
test suite, you should have received the email: "[PATCH 3/3] kselftest:
introduce new epoll test case". Please, take a look or ask your
colleague
to take a look. If no objections - then fine, leave as is.
Thanks.
--
Roman
