Hi Jens, I wrote the test case for epoll. Since it fails also without sqpoll (Linux 5.4.13-201.fc31.x86_64), can you take a look to understand if the test is wrong? Tomorrow I'll travel, but on Wednesday I'll try this test with the patch that I sent and also with the upstream kernel. Thanks, Stefano Stefano Garzarella (1): test: add epoll test case .gitignore | 1 + test/Makefile | 5 +- test/epoll.c | 307 ++++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 311 insertions(+), 2 deletions(-) create mode 100644 test/epoll.c -- 2.24.1