Re: Enable/Disable of ftrace events crashes kernel

2019-07-12 Thread Richard Weinberger via Xenomai
On Thu, Jul 11, 2019 at 11:20 PM Jan Kiszka wrote: > > On 11.07.19 22:48, Richard Weinberger wrote: > > On Thu, Jul 11, 2019 at 8:30 PM Jan Kiszka wrote: > >> > >> On 11.07.19 12:25, Richard Weinberger wrote: > >>> On Thu, Jul 11, 2019 at 12:21 PM Jan Kiszka > >>> wrote: > Can't reproduce

Re: Enable/Disable of ftrace events crashes kernel

2019-07-11 Thread Jan Kiszka via Xenomai
On 11.07.19 22:48, Richard Weinberger wrote: > On Thu, Jul 11, 2019 at 8:30 PM Jan Kiszka wrote: >> >> On 11.07.19 12:25, Richard Weinberger wrote: >>> On Thu, Jul 11, 2019 at 12:21 PM Jan Kiszka wrote: Can't reproduce so far, even with a while-true loop. Can you share your .config?

Re: Enable/Disable of ftrace events crashes kernel

2019-07-11 Thread Richard Weinberger via Xenomai
On Thu, Jul 11, 2019 at 8:30 PM Jan Kiszka wrote: > > On 11.07.19 12:25, Richard Weinberger wrote: > > On Thu, Jul 11, 2019 at 12:21 PM Jan Kiszka wrote: > >> Can't reproduce so far, even with a while-true loop. Can you share your > >> .config? > > > > Sure, see attachment. > > > > This seems

Re: Enable/Disable of ftrace events crashes kernel

2019-07-11 Thread Jan Kiszka via Xenomai
On 11.07.19 20:30, Jan Kiszka wrote: > On 11.07.19 12:25, Richard Weinberger wrote: >> On Thu, Jul 11, 2019 at 12:21 PM Jan Kiszka wrote: >>> Can't reproduce so far, even with a while-true loop. Can you share your >>> .config? >> >> Sure, see attachment. >> > > This seems to fix the issue here:

Re: Enable/Disable of ftrace events crashes kernel

2019-07-11 Thread Jan Kiszka via Xenomai
On 11.07.19 12:25, Richard Weinberger wrote: > On Thu, Jul 11, 2019 at 12:21 PM Jan Kiszka wrote: >> Can't reproduce so far, even with a while-true loop. Can you share your >> .config? > > Sure, see attachment. > This seems to fix the issue here: diff --git a/arch/x86/entry/entry_64.S

Re: Enable/Disable of ftrace events crashes kernel

2019-07-11 Thread Richard Weinberger via Xenomai
On Thu, Jul 11, 2019 at 12:21 PM Jan Kiszka wrote: > Can't reproduce so far, even with a while-true loop. Can you share your > .config? Sure, see attachment. -- Thanks, //richard -- next part -- A non-text attachment was scrubbed... Name: .config Type:

Re: Enable/Disable of ftrace events crashes kernel

2019-07-11 Thread Jan Kiszka via Xenomai
On 11.07.19 00:29, Richard Weinberger via Xenomai wrote: > Hi! > > I can reliable kill Linux on qemu by writing a few times 1 and 0 to > /sys/kernel/debug/tracing/events/cobalt_core/enable > > Didn't test on real hardware so far. > The following splat happened on ipipe-core-4.19.57-x86-3 plus >