[  50.0020564] panic: cpu1: softints stuck for 16 seconds
[  50.0020564] cpu0: found cpu1 heart stopped beating after 16 seconds
[  50.0020564] cpu1: Begin traceback...
[  50.8215334] usb1 at vhci1: USB revision 2.0
[  51.0113987] vpanic() at uhub1 at usb1: NetBSD (0x0000) VHCI root hub (0x0000), class 9/0, rev 2.00/1.00, addr 1
[  51.4229760] netbsd:vpanic[  51.5235563] +0x27a
[  52.7708759] panic() at netbsd:panic+0x9d sys/kern/subr_prf.c:1084
[  54.0104028] heartbeat() at netbsd:heartbeat+0x759 heartbeat_timecounter_suspended sys/kern/kern_heartbeat.c:232 [inline]
[  54.0104028] heartbeat() at netbsd:heartbeat+0x759 sys/kern/kern_heartbeat.c:672
[  55.0899806] hardclock() at netbsd:hardclock+0x182 sys/kern/kern_clock.c:347
[  56.1295988] Xresume_lapic_ltimer() at netbsd:Xresume_lapic_ltimer+0x1e
[  56.5195695] --- interrupt ---
[  57.4191790] _kernel_lock() at netbsd:_kernel_lock+0x477 __SIMPLELOCK_LOCKED_P sys/arch/amd64/compile/obj/GENERIC_SYZKALLER/./x86/lock.h:44 [inline]
[  57.4191790] _kernel_lock() at netbsd:_kernel_lock+0x477 sys/kern/kern_lock.c:268
[  58.5287793] frag6_fasttimo() at netbsd:frag6_fasttimo+0x30 sys/netinet6/frag6.c:662
[  59.6784024] pffasttimo() at netbsd:pffasttimo+0x68 sys/kern/uipc_domain.c:770
[  60.8579932] callout_softclock() at netbsd:callout_softclock+0x1a6 sys/kern/kern_timeout.c:873
[  62.0575842] softint_dispatch() at netbsd:softint_dispatch+0x37a softint_execute sys/kern/kern_softint.c:605 [inline]
[  62.0575842] softint_dispatch() at netbsd:softint_dispatch+0x37a sys/kern/kern_softint.c:848
address 0xffffa3822fcc30b8 is invalid
address 0xffffa3822fcc30b0 is invalid
address 0xffffa3822fcc30c0 is invalid
address 0xffffa3822fcc30b8 is invalid
address 0xffffa3822fcc30c8 is invalid
address 0xffffa3822fcc30c0 is invalid
address 0xffffa3822fcc30d0 is invalid
address 0xffffa38usf2 3tc8 is i: alBd
 63.8669827] revision 2.0DDB lost frame for 
[  64.0969090] uhub2 at usb2: NetBSD (0x0000) VHCI root hub (0x0000), class 9/0, rev 2.00/1.00, addr 1
[  64.1978851] netbsd:Xsoftintr+0x57, trying 0xffffa3822fcc2ff0
[  65.0365334] Xsoftintr() at netbsd:Xsoftintr+0x57
[  65.3664965] --- interrupt ---
address 0xffffa3822fcc30c8 is invalid
address 0xffffa3822fcc3080 is invalid
[  65.7663191] 41b58ab3:
[  65.8563188] cpu1: End traceback...
[  65.9862782] fatal breakpoint trap in supervisor mode
[  66.1862074] trap type 1 code 0 rip 0xffffffff8023240d cs 0x8 rflags 0x246 cr2 0 ilevel 0x7 rsp 0xffffa3822fcc28b8
[  66.6060468] curlwp 0xffffa38010cac240 pid 0.26 lowest kstack 0xffffa3822fcbb2c0
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+0x759 heartbeat_timecounter_suspended sys/kern/kern_heartbeat.c:232 [inline]
heartbeat() at netbsd:heartbeat+0x759 sys/kern/kern_heartbeat.c:672
hardclock() at netbsd:hardclock+0x182 sys/kern/kern_clock.c:347
Xresume_lapic_ltimer() at netbsd:Xresume_lapic_ltimer+0x1e
--- interrupt ---
_kernel_lock() at netbsd:_kernel_lock+0x477 __SIMPLELOCK_LOCKED_P sys/arch/amd64/compile/obj/GENERIC_SYZKALLER/./x86/lock.h:44 [inline]
_kernel_lock() at netbsd:_kernel_lock+0x477 sys/kern/kern_lock.c:268
frag6_fasttimo() at netbsd:frag6_fasttimo+0x30 sys/netinet6/frag6.c:662
pffasttimo() at netbsd:pffasttimo+0x68 sys/kern/uipc_domain.c:770
callout_softclock() at netbsd:callout_softclock+0x1a6 sys/kern/kern_timeout.c:873
--db_more--