Hi, On Fri, Nov 29, 2019 at 09:42:44AM +0100, Manuel Bouyer wrote:
> > Yes indeed, since yesterday with rev 1.51 src/sys/kern/kern_softint.c. > > Well, the 201911261940Z now panics with: > [ 1.0000000] xenbus0 at hypervisor0: Xen Virtual Bus Interface > [ 1.0000000] xencons0 at hypervisor0: Xen Virtual Console Driver > [ 1.0000030] panic: kernel diagnostic assertion "(flags & RESCHED_UPREEMPT) > != 0" failed: file "/home/source/ab/HEAD/src/sys/arch/x86/x86/x86_machdep.c", > line 317 > [ 1.0000030] cpu0: Begin traceback... > [ 1.0000030] vpanic() at netbsd:vpanic+0x146 > [ 1.0000030] kern_assert() at netbsd:kern_assert+0x48 > [ 1.0000030] cpu_need_resched() at netbsd:cpu_need_resched+0xb3 > [ 1.0000030] hardclock() at netbsd:hardclock+0xc4 > [ 1.0000030] xen_timer_handler() at netbsd:xen_timer_handler+0x66 > [ 1.0000030] Xresume_xenev7() at netbsd:Xresume_xenev7+0x49 > [ 1.0000030] --- interrupt --- > [ 1.0000030] Xspllower() at netbsd:Xspllower+0xe > [ 1.0000030] cpu0: End traceback... > > (http://www-soc.lip6.fr/~bouyer/NetBSD-tests/xen/HEAD/amd64/201911261940Z_anita.txt) You have a CPU hog stuck in kernel and it's trying to force it off with a kernel preemption, but NetBSD/xen doesn't have kernel preemption. I'll fix it when I get home from work later. Andrew