assertion "(l->l_pflag & LP_INTR) == 0" failed

[Emmanuel Dreyfus <manu%netbsd.org@localhost>]

Hello

When dumping filesystem on a NetBSD 9.2 domU, I get this (100% reproductble
on this machine, never happens on others):

 panic: kernel diagnostic assertion "(l->l_pflag & LP_INTR) == 0" failed: file "/home2/manu/netbsd92/src64/sys/arch/x86/x86/pmap.c", line 5032 
 cpu0: Begin traceback...
 vpanic() at netbsd:vpanic+0x143
 kern_assert() at netbsd:kern_assert+0x48
 pmap_update() at netbsd:pmap_update+0xb9
 uvm_km_kmem_free() at netbsd:uvm_km_kmem_free+0x3d
 xbd_handler() at netbsd:xbd_handler+0x347
 xen_intr_biglock_wrapper() at netbsd:xen_intr_biglock_wrapper+0x1d
 Xresume_xenev6() at netbsd:Xresume_xenev6+0x49
 --- interrupt ---
 Xspllower() at netbsd:Xspllower+0xe
 softint_overlay() at netbsd:softint_overlay+0x529
 lwp_userret() at netbsd:lwp_userret+0x211
 syscall() at netbsd:syscall+0x18c
 --- syscall (number 27512) ---                                 
 725800a427aa:
 cpu0: End traceback...


Known problem?

-- 
Emmanuel Dreyfus
manu%netbsd.org@localhost