On 2/19/20 1:29 PM, Avi Kivity wrote: > On 2/19/20 10:25 PM, Glauber Costa wrote: >> On Wed, Feb 19, 2020 at 3:13 PM Jens Axboe <axboe@xxxxxxxxx> wrote: >>> On 2/19/20 1:11 PM, Glauber Costa wrote: >>>> On Wed, Feb 19, 2020 at 3:09 PM Jens Axboe <axboe@xxxxxxxxx> wrote: >>>>> On 2/19/20 9:23 AM, Glauber Costa wrote: >>>>>> Hi, >>>>>> >>>>>> I started using af0a72622a1fb7179cf86ae714d52abadf7d8635 today so I could consume the new fast poll flag, and one of my tests that was previously passing now crashes >>>>> Thanks for testing the new stuff! As always, would really appreciate a >>>>> test case that I can run, makes my job so much easier. >>>> Trigger warning: >>>> It's in C++. >>> As long as it reproduces, I don't really have to look at it :-) >> Instructions: >> 1. clone https://github.com/glommer/seastar.git, branch uring-accept-crash >> 2. git submodule update --recursive --init, because we have a shit-ton >> of submodules because why not. > > > Actually, seastar has only one submodule (dpdk) and it is optional, so > you need not clone it. > > >> 3. install all dependencies with ./install-dependencies.sh >> note: that does not install liburing yet, you need to have at >> least 0.4 (I trust you do), with the patch I just sent to add the fast >> poll flag. It still fails sometimes in my system if liburing is >> installed in /usr/lib instead of /usr/lib64 because cmake is made by >> the devil. >> 3. ./configure.py --mode=release > > > --mode dev will compile many times faster > > >> 4. ninja -C build/release tests/unit/unix_domain_test >> 5. crash your system (hopefully) by executing >> ./build/release/tests/unit/unix_domain_test -- -c1 >> --reactor-backend=uring >> > s/release/dev/ in steps 4, 5 if you use dev mode. Thanks, this is great, I can reproduce! -- Jens Axboe
