From: Wei Liu <wei....@kernel.org> Sent: Friday, July 17, 2020 3:46 AM > On Wed, Jul 08, 2020 at 09:25:12AM +0000, Wei Liu wrote: > > On Wed, Jul 08, 2020 at 09:21:05AM +0000, Wei Liu wrote: > > [...] > > > > If I revert this commit, everything works fine: > > > > > > > > PS C:\Users\natec> wsl --shutdown > > > > PS C:\Users\natec> wsl -d ubuntu -- /bin/bash > > > > nathan@Ryzen-9-3900X:/mnt/c/Users/natec$ cat /proc/version > > > > Linux version 5.8.0-rc4-next-20200707-microsoft-standard+ > > > > (nathan@Ryzen-9-3900X) > (gcc (Ubuntu 9.3.0-10ubuntu2) 9.3.0, GNU ld (GNU Binutils for Ubuntu) 2.34) > #1 SMP Tue Jul > 7 16:35:06 MST 2020 > > > > nathan@Ryzen-9-3900X:/mnt/c/Users/natec$ git -C ~/src/linux-next lo -2 > > > > 0ff017dff922 (HEAD -> master) Revert "scsi: storvsc: Use > > > > vmbus_requestor to > generate transaction IDs for VMBus hardening" > > > > 5b2a702f85b3 (tag: next-20200707, origin/master, origin/HEAD) Add > > > > linux-next specific > files for 20200707 > > > > nathan@Ryzen-9-3900X:/mnt/c/Users/natec$ > > > > > > > > The kernel was built using the following commands: > > > > > > > > $ mkdir -p out/x86_64 > > > > > > > > $ curl -LSso out/x86_64/.config > https://raw.githubusercontent.com/microsoft/WSL2-Linux-Kernel/linux-msft-wsl-4.19.y/Microsoft/config-wsl > > > > > > > > $ scripts/config --file out/x86_64/.config -d RAID6_PQ_BENCHMARK -e > NET_9P_VIRTIO > > > > > > > > $ make -skj"$(nproc)" O=out/x86_64 olddefconfig bzImage > > > > > > > > I don't really know how to get more information than this as WSL seems > > > > rather opaque but I am happy to provide any information. > > > > > > Linux kernel uses Hyper-V's crash reporting facility to spit out > > > information when it dies. It is said that you can see that information > > > in the "Event Viewer" program. > > > > > > (I've never tried this though -- not using WSL2) > > > > > > > If this doesn't work, another idea is to install a traditional VM on > > Hyper-V and replace the kernel with your own. > > > > With such setup, you should be able to add an emulated serial port to > > the VM and grab more information. > > Hi Nathan, do you need more help on this? > > MSFT is also working on reproducing this internally. > > We're ~2 weeks away from the next merge window so it would be good if we > can get to the bottom of this as quickly as possible. >
On the Microsoft side we now have a repro of the problem when running in WSLv2. The symptoms match exactly what Nathan has reported. We will debug it from here. Thanks for reporting this! Michael
