[   1.4756929] panic: cpu1: time has not advanced in 1501 heartbeats
[   1.4756929] cpu1: Begin traceback...
[   1.4756929] usb1 at vhci1: USB revision 2.0
[   1.4756929] vpanic(uhub1 at usb1) at : NetBSD (0x0000) VHCI root hub (0x0000), class 9/0, rev 2.00/1.00, addr 1
[   1.4756929] netbsd:vpanic[   1.4756929] +0x27a
[   1.4756929] panic() at netbsd:panic+0x9d sys/kern/subr_prf.c:1084
[   1.4756929] heartbeat() at netbsd:heartbeat+0x5cb select_patient sys/kern/kern_heartbeat.c:579 [inline]
[   1.4756929] heartbeat() at netbsd:heartbeat+0x5cb sys/kern/kern_heartbeat.c:706
[   1.4756929] hardclock() at netbsd:hardclock+0x182 sys/kern/kern_clock.c:347
[   1.4756929] Xresume_lapic_ltimer() at netbsd:Xresume_lapic_ltimer+0x1e
[   1.4756929] --- interrupt ---
[   1.4756929] __sanitizer_cov_trace_pc() at netbsd:__sanitizer_cov_trace_pc+0x36 sys/kern/subr_kcov.c:596
[   1.4756929] _kernel_lock() at netbsd:_kernel_lock+0x475 x86_pause sys/arch/amd64/compile/obj/GENERIC_SYZKALLER/./x86/cpufunc.h:53 [inline]
[   1.4756929] _kernel_lock() at netbsd:_kernel_lock+0x475 sys/kern/kern_lock.c:282
[   1.4756929] frag6_fasttimo() at netbsd:frag6_fasttimo+0x30 sys/netinet6/frag6.c:662
[   1.4756929] pffasttimo() at netbsd:pffasttimo+0x68 sys/kern/uipc_domain.c:770
[   1.4756929] callout_softclock() at netbsd:callout_softclock+0x1a6 sys/kern/kern_timeout.c:873
[   1.4756929] usb2 at vhci2softint_dispatch() at : USB revision 2.0
[   1.4756929] uhub2 at usb2netbsd:softint_dispatch: NetBSD (0x0000) VHCI root hub (0x0000), class 9/0, rev 2.00/1.00, addr 1
[   1.4756929] +0x37a
address 0xffff9b822fcc30b8 is invalid
address 0xffff9b822fcc30b0 is invalid
address 0xffff9b822fcc30c0 is invalid
address 0xffff9b822fcc30b8 is invalid
address 0xffff9b822fcc30c8 is invalid
address 0xffff9b822fcc30c0 is invalid
address 0xffff9b822fcc30d0 is invalid
address 0xffff9b822fcc30c8 is invalid
[   1.4756929] DDB lost frame for netbsd:Xsoftintr+0x57, trying 0xffff9b822fcc2ff0
[   1.4756929] Xsoftintr() at netbsd:Xsoftintr+0x57
[   1.4756929] --- interrupt ---
address 0xffff9b822fcc30c8 is invalid
address 0xffff9b822fcc3080 is invalid
[   1.4756929] 41b58ab3:
[   1.4756929] cpu1: End traceback...
[   1.4756929] fatal breakpoint trap in supervisor mode
[   1.4756929] trap type 1 code 0 rip 0xffffffff8023240d cs 0x8 rflags 0x246 cr2 0 ilevel 0x7 rsp 0xffff9b822fcc2898
[   1.4756929] curlwp 0xffff9b8010cac240 pid 0.26 lowest kstack 0xffff9b822fcbb2c0
Stopped in pid 0.26 (system) at netbsd:breakpoint+0x5:  leave
breakpoint() at netbsd:breakpoint+0x5
db_panic() at netbsd:db_panic+0x105 sys/ddb/db_panic.c:71
vpanic() at netbsd:vpanic+0x27a sys/kern/subr_prf.c:288
panic() at netbsd:panic+0x9d sys/kern/subr_prf.c:1084
heartbeat() at netbsd:heartbeat+0x5cb select_patient sys/kern/kern_heartbeat.c:579 [inline]
heartbeat() at netbsd:heartbeat+0x5cb sys/kern/kern_heartbeat.c:706
hardclock() at netbsd:hardclock+0x182 sys/kern/kern_clock.c:347
Xresume_lapic_ltimer() at netbsd:Xresume_lapic_ltimer+0x1e
--- interrupt ---
__sanitizer_cov_trace_pc() at netbsd:__sanitizer_cov_trace_pc+0x36 sys/kern/subr_kcov.c:596
_kernel_lock() at netbsd:_kernel_lock+0x475 x86_pause sys/arch/amd64/compile/obj/GENERIC_SYZKALLER/./x86/cpufunc.h:53 [inline]
_kernel_lock() at netbsd:_kernel_lock+0x475 sys/kern/kern_lock.c:282
frag6_fasttimo() at netbsd:frag6_fasttimo+0x30 sys/netinet6/frag6.c:662
pffasttimo() at netbsd:pffasttimo+0x68 sys/kern/uipc_domain.c:770
--db_more--