Messages in this thread | | | Date | Wed, 6 Nov 2002 14:42:47 -0800 (PST) | From | Davide Libenzi <> | Subject | Re: [PATCH] 2.5.46: epoll_wait can return too many events |
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On Wed, 6 Nov 2002, Jay Vosburgh wrote:
> > The logic in fs/eventpoll.c:ep_events_transfer() to bundle events can > return more than the requested number of events (because the event count is > only incremented for each bundle); this will scribble on memory beyond the > end of the user's buffer. The fix is to test against the bundle size > (ebufcnt) plus the event count (eventcnt). > > Also, passing maxevents <= 0 to epoll_wait() causes the system to > lock up; the fix is to return EINVAL if maxevents is <= 0.
Thanks Jay. Got it. Linus please drop 0.32, I'll make 0.33 right now ...
- Davide
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