[  21.0031977] panic: cpu0: softints stuck for 16 seconds
[  21.0031977] cpu1: found cpu0 heart stopped beating after 16 seconds
[  21.0031977] cpu0: Begin traceback...
[  21.0031977] vpanic() at netbsd:vpanic+0x2f0 sys/kern/subr_prf.c:288
[  21.0031977] usb0 at vhci0: USB revision 2.0
[  21.0031977] uhub0 at usb0: NetBSD (0x0000) VHCI root hub (0x0000), class 9/0, rev 2.00/1.00, addr 1
[  21.0031977] panic() at netbsd:panic+0x49 sys/kern/subr_prf.c:1116
[  21.0031977] heartbeat() at netbsd:heartbeat+0x7c3 select_patient sys/kern/kern_heartbeat.c:549 [inline]
[  21.0031977] heartbeat() at netbsd:heartbeat+0x7c3 sys/kern/kern_heartbeat.c:706
[  21.0031977] hardclock() at netbsd:hardclock+0x1d9 sys/kern/kern_clock.c:348
[  21.0031977] Xresume_lapic_ltimer() at netbsd:Xresume_lapic_ltimer+0x1e
[  21.0031977] --- interrupt ---
[  21.0031977] __sanitizer_cov_trace_pc() at netbsd:__sanitizer_cov_trace_pc+0x88 sys/kern/subr_kcov.c:596
[  21.0031977] _kernel_lock() at netbsd:_kernel_lock+0x46b x86_pause sys/arch/amd64/compile/obj/GENERIC_SYZKALLER/./x86/cpufunc.h:53 [inline]
[  21.0031977] _kernel_lock() at netbsd:_kernel_lock+0x46b sys/kern/kern_lock.c:282
[  21.0031977] ip_slowtimo() at netbsd:ip_slowtimo+0x1f sys/netinet/ip_input.c:828
[  21.0031977] pfslowtimo() at netbsd:pfslowtimo+0xc6 sys/kern/uipc_domain.c:754
[  21.0031977] callout_softclock() at netbsd:callout_softclock+0x2ab sys/kern/kern_timeout.c:873
[  21.0031977] softint_dispatch() at netbsd:softint_dispatch+0x40a softint_execute sys/kern/kern_softint.c:605 [inline]
[  21.0031977] softint_dispatch() at netbsd:softint_dispatch+0x40a sys/kern/kern_softint.c:848
[  21.0031977] usb1 at vhci1: USB revision 2.0
[  21.0031977] uhub1 at usb1: NetBSD (0x0000) VHCI root hub (0x0000), class 9/0, rev 2.00/1.00, addr 1
[  21.0031977] DDB lost frame for [  21.0031977] netbsd:Xsoftintr+0x4c, trying 0xffffa2022fa320f0
[  21.0031977] Xsoftintr() at netbsd:Xsoftintr+0x4c
[  21.0031977] --- interrupt ---
[  21.0031977] 0:
[  21.0031977] cpu0: End traceback...
[  21.0031977] fatal breakpoint trap in supervisor mode
[  21.0031977] trap type 1 code 0 rip 0xffffffff80235475 cs 0x8 rflags 0x246 cr2 0 ilevel 0x7 rsp 0xffffa2022fa31be8
[  21.0031977] curlwp 0xffff8ab343fc2080 pid 0.5 lowest kstack 0xffffa2022fa2d2c0
Stopped in pid 0.5 (system) at  netbsd:breakpoint+0x5:  leave
breakpoint() at netbsd:breakpoint+0x5
db_panic() at netbsd:db_panic+0xec sys/ddb/db_panic.c:71
vpanic() at netbsd:vpanic+0x2f0 sys/kern/subr_prf.c:288
panic() at netbsd:panic+0x49 sys/kern/subr_prf.c:1116
heartbeat() at netbsd:heartbeat+0x7c3 select_patient sys/kern/kern_heartbeat.c:549 [inline]
heartbeat() at netbsd:heartbeat+0x7c3 sys/kern/kern_heartbeat.c:706
hardclock() at netbsd:hardclock+0x1d9 sys/kern/kern_clock.c:348
Xresume_lapic_ltimer() at netbsd:Xresume_lapic_ltimer+0x1e
--- interrupt ---
__sanitizer_cov_trace_pc() at netbsd:__sanitizer_cov_trace_pc+0x88 sys/kern/subr_kcov.c:596
_kernel_lock() at netbsd:_kernel_lock+0x46b x86_pause sys/arch/amd64/compile/obj/GENERIC_SYZKALLER/./x86/cpufunc.h:53 [inline]
_kernel_lock() at netbsd:_kernel_lock+0x46b sys/kern/kern_lock.c:282
ip_slowtimo() at netbsd:ip_slowtimo+0x1f sys/netinet/ip_input.c:828
pfslowtimo() at netbsd:pfslowtimo+0xc6 sys/kern/uipc_domain.c:754
callout_softclock() at netbsd:callout_softclock+0x2ab sys/kern/kern_timeout.c:873
softint_dispatch() at netbsd:softint_dispatch+0x40a softint_execute sys/kern/kern_softint.c:605 [inline]
softint_dispatch() at netbsd:softint_dispatch+0x40a sys/kern/kern_softint.c:848
DDB lost frame for netbsd:Xsoftintr+0x4c, trying 0xffffa2022fa320f0
Xsoftintr() at netbsd:Xsoftintr+0x4c
--- interrupt ---
0:
ds          1ba8
es          1bf8
fs          10
gs          7
--db_more--