On Fri, Feb 21, 2020 at 2:04 PM Jens Axboe <axboe@xxxxxxxxx> wrote: > > On 2/21/20 7:51 AM, Jens Axboe wrote: > > On 2/21/20 6:17 AM, Glauber Costa wrote: > >> Hi > >> > >> Today I found a crash when adding code for the poll ring to my implementation. > >> Kernel is 2b58a38ef46e91edd68eec58bdb817c42474cad6 > >> > >> Here's how to reproduce: > >> > >> code at > >> https://github.com/glommer/seastar.git branch poll-ring > >> > >> 1. same as previous steps to configure seastar, but compile with: > >> ninja -C build/release apps/io_tester/io_tester > >> > >> 2. Download the yaml file attached > >> > >> 3. Run with: > >> > >> ./build/release/apps/io_tester/io_tester --conf ~/test.yaml --duration > >> 15 --directory /var/disk1 --reactor-backend=uring --smp 1 > >> > >> (directory must be on xfs because we do c++ but we're not savages) > > > > This is due to killing the dummy callback function on the task work. > > I'll play with this a bit and see how we can fix it. > > I re-did the code to use task_works instead, can you try the current > one? Same branch, sha is currently 9ba3cd1b8923. Tnx. I don't see a crash any longer. > > -- > Jens Axboe >
