A kernel crash after compiling a fresh kernel

The 14-CURRENT running a fresh kernel crashes with these messages:

__curthread () at /usr/src/sys/amd64/include/pcpu_aux.h:55
55              __asm("movq %%gs:%P1,%0" : "=r" (td) : "n" (offsetof(struct
pcpu,
                                (kgdb) #0  __curthread () at
/usr/src/sys/amd64/include/pcpu_aux.h:55
#1  dump_savectx () at /usr/src/sys/kern/kern_shutdown.c:401
#2  0xffffffff80be8ba5 in dumpsys (di=0x0)
                                at /usr/src/sys/x86/include/dump.h:87
#3  doadump (textdump=1) at /usr/src/sys/kern/kern_shutdown.c:430
#4  kern_reboot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:537
#5  0xffffffff80be8fee in vpanic (fmt=<optimized out>,
        ap=ap@entry=0xfffffe01042395a0) at
/usr/src/sys/kern/kern_shutdown.c:975
#6  0xffffffff80be8d53 in panic (fmt=<unavailable>)
                                at /usr/src/sys/kern/kern_shutdown.c:899
#7  0xffffffff810c0877 in trap_fatal (frame=0xfffffe0104239690, eva=0)
                                at /usr/src/sys/amd64/amd64/trap.c:942
#8  0xffffffff810c092b in trap_pfault (frame=0xfffffe0104239690,
        usermode=false, signo=<optimized out>, ucode=<optimized out>)
                                at /usr/src/sys/amd64/amd64/trap.c:761
#9  <signal handler called>
#10 tcp_sack_output (tp=tp@entry=0xfffffe0187312140,
        sack_bytes_rexmt=sack_bytes_rexmt@entry=0xfffffe010423983c)
                                at /usr/src/sys/netinet/tcp_sack.c:970
#11 0xffffffff80dd47a2 in tcp_default_output (tp=0xfffffe0187312140)
at /usr/src/sys/netinet/tcp_output.c:310
#12 0xffffffff80dcd240 in tcp_output (tp=tp@entry=0xfffffe0187312140)
at /usr/src/sys/netinet/tcp_var.h:407
#13 0xffffffff80dcc81a in tcp_do_segment (m=0xfffff80203467700,
                th=0xfffff8001f190022, so=0xfffff80015d0fb40,
tp=0xfffffe0187312140,
                drop_hdrlen=64, tlen=<optimized out>, iptos=0 '\000')
at /usr/src/sys/netinet/tcp_input.c:2788
#14 0xffffffff80dc8def in tcp_input_with_port (mp=<optimized out>,
                offp=<optimized out>, proto=<optimized out>, port=port@entry
=0)
at /usr/src/sys/netinet/tcp_input.c:1397
#15 0xffffffff80dc9c8b in tcp_input (mp=0xfffff8011c764010, offp=0x4,
                proto=-2128851986) at /usr/src/sys/netinet/tcp_input.c:1492
#16 0xffffffff80db8cd7 in ip_input (m=0x0)
at /usr/src/sys/netinet/ip_input.c:840
#17 0xffffffff80d3842f in netisr_dispatch_src (proto=1,
                source=source@entry=0, m=0xfffff80203467700)
at /usr/src/sys/net/netisr.c:1153
#18 0xffffffff80d3878f in netisr_dispatch (proto=477511696,
                m=0xffffffff811c4bee) at /usr/src/sys/net/netisr.c:1244
#19 0xffffffff80d1a7cc in ether_demux (ifp=ifp@entry=0xfffff80002873800,
m=0x4) at /usr/src/sys/net/if_ethersubr.c:925
#20 0xffffffff80d1be53 in ether_input_internal (ifp=0xfffff80002873800,
m=0x4)
at /usr/src/sys/net/if_ethersubr.c:711
#21 ether_nh_input (m=<optimized out>) at
/usr/src/sys/net/if_ethersubr.c:741
#22 0xffffffff80d3842f in netisr_dispatch_src (proto=proto@entry=5,
                source=source@entry=0, m=m@entry=0xfffff80203467700)
at /usr/src/sys/net/netisr.c:1153
#23 0xffffffff80d3878f in netisr_dispatch (proto=477511696, proto@entry=5,
                m=0xffffffff811c4bee, m@entry=0xfffff80203467700)
at /usr/src/sys/net/netisr.c:1244
#24 0xffffffff80d1ac89 in ether_input (ifp=0xfffff80002873800,
                m=0xfffff80203467700) at /usr/src/sys/net/if_ethersubr.c:832
#25 0xffffffff808f41f7 in re_rxeof (sc=sc@entry=0xfffffe00e1cce000,
                rx_npktsp=0x0) at /usr/src/sys/dev/re/if_re.c:2386
#26 0xffffffff808f1a16 in re_intr_msi (xsc=0xfffffe00e1cce000)
at /usr/src/sys/dev/re/if_re.c:2682
#27 0xffffffff80ba3d49 in intr_event_execute_handlers
(ie=0xfffff800020fde00,
                p=<optimized out>) at /usr/src/sys/kern/kern_intr.c:1205
#28 ithread_execute_handlers (ie=0xfffff800020fde00, p=<optimized out>)
at /usr/src/sys/kern/kern_intr.c:1218
#29 ithread_loop (arg=arg@entry=0xfffff800020fbf80)
at /usr/src/sys/kern/kern_intr.c:1306
#30 0xffffffff80ba03e0 in fork_exit (
                callout=0xffffffff80ba3ad0 <ithread_loop>,
arg=0xfffff800020fbf80,
                frame=0xfffffe0104239f40) at
/usr/src/sys/kern/kern_fork.c:1102
#31 <signal handler called>