Re: Xen panic in lwp_need_userret()

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

On Tue, Nov 26, 2019 at 01:38:08PM +0000, Andrew Doran wrote:
> Hi Manuel,
> 
> On Tue, Nov 26, 2019 at 09:01:28AM +0100, Manuel Bouyer wrote:
> 
> > Any chance this has been fixed since 2 days ago ?
> 
> 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)

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
--