Hello Vignesh- On Tue, Aug 21, 2018 at 07:03:20PM +0530, Vignesh Raman wrote: > Hi Julia, > > > On Tue, Aug 21, 2018 at 6:57 AM Julia Cartwright <julia@xxxxxx> wrote: > > Serial console is really the best way to go, especially if the higher > > level tools (crash, pstore, etc.) aren't functioning properly. With the > > hopes that you can get an oops or panic message... > > Added 'debug systemd.journald.forward_to_console=1 pause_on_oops=120' to > kernel boot parameters. When the freeze/reset happens with the docker test > case, the kernel oops/panic is not seen in the serial console. That's annoying. When you are in this state can you trigger a dump via the magic sysrq sequence over serial? Have you tried enabling the various lockup detectors? There is a software-driven one, and an NMI watchdog based one. Enabling both at the same time should be fine. Julia
