[  30.8693036] usb0 at vhci0: USB revision 2.0panic: cpu0: softints stuck for 16 seconds
[  31.0092233] cpu0: Begin traceback...
[  31.0092233] vpanic() at netbsd:vpanic+0x27a sys/kern/subr_prf.c:288
[  31.0092233] panic() at netbsd:panic+0x9d sys/kern/subr_prf.c:1084
[  31.0092233] heartbeat() at netbsd:heartbeat+0x759 heartbeat_timecounter_suspended sys/kern/kern_heartbeat.c:232 [inline]
[  31.0092233] heartbeat() at netbsd:heartbeat+0x759 sys/kern/kern_heartbeat.c:672
[  31.0092233] hardclock() at netbsd:hardclock+0x182 sys/kern/kern_clock.c:347
[  31.0092233] Xresume_lapic_ltimer() at netbsd:Xresume_lapic_ltimer+0x1e
[  31.0092233] --- interrupt ---
[  31.0092233] _kernel_lock() at netbsd:_kernel_lock+0x475 x86_pause sys/arch/amd64/compile/obj/GENERIC_SYZKALLER/./x86/cpufunc.h:53 [inline]
[  31.0092233] _kernel_lock() at netbsd:_kernel_lock+0x475 sys/kern/kern_lock.c:282
[  31.0092233] if_slowtimo_intr() at netbsd:if_slowtimo_intr+0xc6 if_slowtimo_countdown sys/net/if.c:2639 [inline]
[  31.0092233] if_slowtimo_intr() at netbsd:if_slowtimo_intr+0xc6 sys/net/if.c:2655
[  31.0092233] callout_softclock() at netbsd:callout_softclock+0x1a6 sys/kern/kern_timeout.c:873
[  31.0092233] softint_dispatch() at netbsd:softint_dispatch+0x37a softint_execute sys/kern/kern_softint.c:605 [inline]
[  31.0092233] softint_dispatch() at netbsd:softint_dispatch+0x37a sys/kern/kern_softint.c:848
address 0xffff9d022fbdb0b8 is invalid
address 0xffff9d022fbdb0b0 is invalid
address 0xffff9d022fbdb0c0 is invalid
address 0xffff9d022fbdb0b8 is invalid
address 0xffff9d022fbdb0c8 is invalid
address 0xffff9d022fbdb0c0 is invalid
address 0xffff9d022fbdb0d0 is invalid
address 0xffff9d022fbdb0c8 is invalid
[  31.0092233] DDB lost frame for netbsd:Xsoftintr+0x57, trying 0xffff9d022fbdaff0
[  31.0092233] Xsoftintr() at netbsd:Xsoftintr+0x57
[  31.0092233] --- interrupt ---
address 0xffff9d022fbdb0c8 is invalid
address 0xffff9d022fbdb080 is invalid
[  31.0092233] 41b58ab3:
[  31.0092233] cpu0: End traceback...
[  31.0092233] fatal breakpoint trap in supervisor mode
[  31.0092233] trap type 1 code 0 rip 0xffffffff8023240d cs 0x8 rflags 0x246 cr2 0 ilevel 0x7 rsp 0xffff9d022fbda8d8
[  31.0092233] curlwp 0xffff9d000fb32080 pid 0.5 lowest kstack 0xffff9d022fbd32c0
Stopped in pid 0.5 (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+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
if_slowtimo_intr() at netbsd:if_slowtimo_intr+0xc6 if_slowtimo_countdown sys/net/if.c:2639 [inline]
if_slowtimo_intr() at netbsd:if_slowtimo_intr+0xc6 sys/net/if.c:2655
callout_softclock() at netbsd:callout_softclock+0x1a6 sys/kern/kern_timeout.c:873
softint_dispatch() at netbsd:softint_dispatch+0x37a softint_execute sys/kern/kern_softint.c:605 [inline]
softint_dispatch() at netbsd:softint_dispatch+0x37a sys/kern/kern_softint.c:848
--db_more--