Regarding this bug report:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=306517
I believe that the manual page probably correctly documents the
intended behaviour, but the implementation is wrong. In
fs/eventpoll.c::sys_epoll_ctl(), I believe the following:
error = -EFAULT;
if (EP_OP_HASH_EVENT(op) &&
copy_from_user(&epds, event, sizeof(struct epoll_event)))
goto eexit_1;
Should be guarded by something like
if (op != EPOLL_CTL_DEL)
But hopefully Davide (the implementer) can shed some light.
Cheers,
Michael
--
Michael Kerrisk
maintainer of Linux man pages Sections 2, 3, 4, 5, and 7
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