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cfa1539b24
One of the nastier things about epoll is how it allows adding epoll files to epoll contexts. This leads to all sorts of loop detection code, and has been a source of issues in the past. Arguably adding IORING_EPOLL_CTL is a historical mistake on the io_uring side, but we're kind of stuck with it now as it does seem to be in use according to code searches. But we can at least minimize the damage a bit and just disallow this part of epoll, where nesting issues can arise. Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
106 lines
2.4 KiB
106 lines
2.4 KiB