‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐ On July 24, 2018 10:25 PM, Mike Larkin <[email protected]> wrote:
> On Tue, Jul 24, 2018 at 10:20:13AM -0400, Adam Steen wrote: > > > ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐ > > On July 23, 2018 5:38 AM, Mike Larkin [email protected] wrote: > > > > > On Fri, Jul 20, 2018 at 08:31:37AM -0400, Adam Steen wrote: > > > > > > > > Synopsis: Kernel Panic 6.3 on Lenovo x220 > > > > > Category: System > > > > > Environment: > > > > > System : OpenBSD 6.3 > > > > > Details : OpenBSD 6.3-current (GENERIC) #123: Fri Jul 13 00:36:30 MDT > > > > > 2018 > > > > > [email protected]:/usr/src/sys/arch/amd64/compile/GENERIC > > > > > > > > Architecture : OpenBSD.amd64 > > > > Machine : amd64 > > > > > > > > > > > > > Description: > > > > > I was testing MirageOS on OpenBSD and had to leave so I ctrl-C the > > > > > program and then kernel panic'd. When i could attempt to reproduce > > > > > the problem, i have not been able to reproduce it to gather better > > > > > information. > > > > > > > > The exact command i ran: doas ukvm-bin hello.ukvm > > > > To get to this point i have installed the ocaml 4.06/opam 2 ports patch > > > > and installed both ocaml and opam2 (i have other pkgs installed in the > > > > past) > > > > then ran > > > > rm -rf $HOME/.opam && \ > > > > rm -rf $HOME/devl/mirage-skeleton && \ > > > > opam init -a && \ > > > > eval $(opam env) && \ > > > > opam pin add solo5-kernel-ukvm git://github.com/Solo5/solo5 -y && > > > > opam install mirage -y && \ > > > > git clone git://github.com/mirage/mirage-skeleton.git > > > > $HOME/devl/mirage-skeleton && \ > > > > cd $HOME/devl/mirage-skeleton/tutorial/hello && \ > > > > mirage configure -t ukvm && \ > > > > gmake depends && \ > > > > gmake > > > > once you have everything built, you can then run > > > > doas ukvm-bin hello.ukvm > > > > and then CTRL-C during its run. (I am yet to reproduce the panic) > > > > this program directly uses /dev/vmm without using vmd or vmctl. > > > > Photo of the crash: > > > > https://s22.postimg.cc/r9yma7q8h/crash.jpg > > > > Photo of the trace: > > > > https://s22.postimg.cc/wy4x12zpt/trace.jpg > > > > Sorry i didn't know enough at the time to get more information. > > > > > > This is the same bug that many people are seeing. It's not reproducible, > > > and I don't know what is causing it. > > > -ml > > > > Hi Mike and Others > > sorry if this is not required or unwelcome > > just in case it was needed, I was able to reproduce the panic by launching > > and killing lots of unikernels based on MirageOS/Solo5/vmm, i have been > > able to reproduce this panic 4 times today, 3 times in the last hour. > > Ah, this matched one of the failure scenarios I saw at the recent hackathon > (VMs stuck spinning in a loop being created and torn down repeatedly). > > I'll try to repro locally. Thanks. > > -ml > I have created an even easier way to set this up git clone https://github.com/adamsteen/solo5.git cd solo5 git checkout panic gmake cd tests/test_panic then run doas random.sh or doas quick.sh or both (both; i have found can take up to 30mins or so) Adam > > i used the following script to launch and kill the unikernels > > #!/usr/bin/env ksh > > i=1 > > while (( i <= 10000 )) > > do > > echo "\n\n$i\n" > > (( i+=1 )) > > devl/mirage-skeleton/tutorial/hello/ukvm-bin > > devl/mirage-skeleton/tutorial/hello/hello.ukvm & > > x=$! > > sleep 0.1 > > kill -s INT $x > > done > > But first you will need to get Mirage installed. > > first apply the "UPDATE of lang/ocaml to 4.06 and dependent ports" diff by > > chrisz@ [1] > > then run > > opam init -a && \ > > eval $(opam env) && \ > > opam pin add solo5-kernel-ukvm git://github.com/Solo5/solo5 -y && > > opam install mirage -y&& \ > > git clone git://github.com/mirage/mirage-skeleton.git > > $HOME/devl/mirage-skeleton && \ > > cd $HOME/devl/mirage-skeleton/tutorial/hello && \ > > mirage configure -t ukvm && \ > > gmake depends && \ > > gmake > > and you should have ukvm-bin and hello.ukvm in > > $HOME/devl/mirage-skeleton/tutorial/hello available to use. > > cheers > > Adam > > [1] https://marc.info/?l=openbsd-ports&m=152960337514741&w=2
