login: kernel: double fault trap, code=0
Stopped at __sanitizer_cov_trace_switch+0x15: pushq %r14
ddb{0}>
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
the kernel did not panic
ddb{0}> trace
__sanitizer_cov_trace_switch(2,ffffffff8247dcf0) at __sanitizer_cov_trace_switch+0x15 sys/dev/kcov.c:211
sbappendaddr(fffffd806ec74648,fffffd806ec746d0,ffff800020afc1c8,fffffd806f3e3600,0) at sbappendaddr+0xf8 soassertlocked sys/kern/uipc_socket2.c:320 [inline]
sbappendaddr(fffffd806ec74648,fffffd806ec746d0,ffff800020afc1c8,fffffd806f3e3600,0) at sbappendaddr+0xf8 sbspace sys/sys/socketvar.h:197 [inline]
sbappendaddr(fffffd806ec74648,fffffd806ec746d0,ffff800020afc1c8,fffffd806f3e3600,0) at sbappendaddr+0xf8 sys/kern/uipc_socket2.c:796
udp_sbappend(fffffd806f6e7118,fffffd806f3e3600,fffffd806f3e36b0,0,14,fffffd806f3e36c4) at udp_sbappend+0x314 sys/netinet/udp_usrreq.c:629
udp_input(ffff800020afc448,ffff800020afc454,11,2) at udp_input+0x1320
ip_deliver(ffff800020afc448,ffff800020afc454,11,2) at ip_deliver+0x353 sys/netinet/ip_input.c:668
ip_ours(ffff800020afc448,ffff800020afc454,8b,0) at ip_ours+0x412
ip_input_if(ffff800020afc448,ffff800020afc454,4,0,ffff800000679800) at ip_input_if+0x6ce
ipv4_input(ffff800000679800,fffffd806f3e3600) at ipv4_input+0x48 sys/netinet/ip_input.c:215
if_input_local(ffff800000679800,fffffd806f3e3600,2) at if_input_local+0xf9 sys/net/if.c:776
ip_output(fffffd806f435d00,0,fffffd806f6e7188,0,0,fffffd806f6e7118) at ip_output+0xae5 ip_mloopback sys/netinet/ip_output.c:1715 [inline]
ip_output(fffffd806f435d00,0,fffffd806f6e7188,0,0,fffffd806f6e7118) at ip_output+0xae5 sys/netinet/ip_output.c:329
udp_output(fffffd806f6e7118,fffffd806f435d00,0,0) at udp_output+0x5af sys/netinet/udp_usrreq.c:1008
somove(fffffd806ec74648,2) at somove+0xf2f sys/kern/uipc_socket.c:1596
sorwakeup(fffffd806ec74648) at sorwakeup+0x79 sys/kern/uipc_socket.c:1645
udp_sbappend(fffffd806f6e7118,fffffd806f435d00,fffffd806f435db0,0,14,fffffd806f435dc4) at udp_sbappend+0x336 sys/netinet/udp_usrreq.c:635
udp_input(ffff800020afcb38,ffff800020afcb44,11,2) at udp_input+0x1320
ip_deliver(ffff800020afcb38,ffff800020afcb44,11,2) at ip_deliver+0x353 sys/netinet/ip_input.c:668
ip_ours(ffff800020afcb38,ffff800020afcb44,8b,0) at ip_ours+0x412
ip_input_if(ffff800020afcb38,ffff800020afcb44,4,0,ffff800000679800) at ip_input_if+0x6ce
ipv4_input(ffff800000679800,fffffd806f435d00) at ipv4_input+0x48 sys/netinet/ip_input.c:215
if_input_local(ffff800000679800,fffffd806f435d00,2) at if_input_local+0xf9 sys/net/if.c:776
ip_output(fffffd806dcdc300,0,fffffd806f6e7188,0,0,fffffd806f6e7118) at ip_output+0xae5 ip_mloopback sys/netinet/ip_output.c:1715 [inline]
ip_output(fffffd806dcdc300,0,fffffd806f6e7188,0,0,fffffd806f6e7118) at ip_output+0xae5 sys/netinet/ip_output.c:329
udp_output(fffffd806f6e7118,fffffd806dcdc300,0,0) at udp_output+0x5af sys/netinet/udp_usrreq.c:1008
somove(fffffd806ec74648,2) at somove+0xf2f sys/kern/uipc_socket.c:1596
sorwakeup(fffffd806ec74648) at sorwakeup+0x79 sys/kern/uipc_socket.c:1645
udp_sbappend(fffffd806f6e7118,fffffd806dcdc300,fffffd806dcdc3b0,0,14,fffffd806dcdc3c4) at udp_sbappend+0x336 sys/netinet/udp_usrreq.c:635
udp_input(ffff800020afd228,ffff800020afd234,11,2) at udp_input+0x1320
ip_deliver(ffff800020afd228,ffff800020afd234,11,2) at ip_deliver+0x353 sys/netinet/ip_input.c:668
ip_ours(ffff800020afd228,ffff800020afd234,8b,0) at ip_ours+0x412
ip_input_if(ffff800020afd228,ffff800020afd234,4,0,ffff800000679800) at ip_input_if+0x6ce
ipv4_input(ffff800000679800,fffffd806dcdc300) at ipv4_input+0x48 sys/netinet/ip_input.c:215
if_input_local(ffff800000679800,fffffd806dcdc300,2) at if_input_local+0xf9 sys/net/if.c:776
ip_output(fffffd806dcdc900,0,fffffd806f6e7188,0,0,fffffd806f6e7118) at ip_output+0xae5 ip_mloopback sys/netinet/ip_output.c:1715 [inline]
ip_output(fffffd806dcdc900,0,fffffd806f6e7188,0,0,fffffd806f6e7118) at ip_output+0xae5 sys/netinet/ip_output.c:329
udp_output(fffffd806f6e7118,fffffd806dcdc900,0,0) at udp_output+0x5af sys/netinet/udp_usrreq.c:1008
somove(fffffd806ec74648,2) at somove+0xf2f sys/kern/uipc_socket.c:1596
sorwakeup(fffffd806ec74648) at sorwakeup+0x79 sys/kern/uipc_socket.c:1645
udp_sbappend(fffffd806f6e7118,fffffd806dcdc900,fffffd806dcdc9b0,0,14,fffffd806dcdc9c4) at udp_sbappend+0x336 sys/netinet/udp_usrreq.c:635
udp_input(ffff800020afd918,ffff800020afd924,11,2) at udp_input+0x1320
ip_deliver(ffff800020afd918,ffff800020afd924,11,2) at ip_deliver+0x353 sys/netinet/ip_input.c:668
ip_ours(ffff800020afd918,ffff800020afd924,8b,0) at ip_ours+0x412
ip_input_if(ffff800020afd918,ffff800020afd924,4,0,ffff800000679800) at ip_input_if+0x6ce
ipv4_input(ffff800000679800,fffffd806dcdc900) at ipv4_input+0x48 sys/netinet/ip_input.c:215
if_input_local(ffff800000679800,fffffd806dcdc900,2) at if_input_local+0xf9 sys/net/if.c:776
ip_output(fffffd806dcdc100,0,fffffd806f6e7188,0,0,fffffd806f6e7118) at ip_output+0xae5 ip_mloopback sys/netinet/ip_output.c:1715 [inline]
ip_output(fffffd806dcdc100,0,fffffd806f6e7188,0,0,fffffd806f6e7118) at ip_output+0xae5 sys/netinet/ip_output.c:329
udp_output(fffffd806f6e7118,fffffd806dcdc100,0,0) at udp_output+0x5af sys/netinet/udp_usrreq.c:1008
somove(fffffd806ec74648,2) at somove+0xf2f sys/kern/uipc_socket.c:1596
sorwakeup(fffffd806ec74648) at sorwakeup+0x79 sys/kern/uipc_socket.c:1645
udp_sbappend(fffffd806f6e7118,fffffd806dcdc100,fffffd806dcdc1b0,0,14,fffffd806dcdc1c4) at udp_sbappend+0x336 sys/netinet/udp_usrreq.c:635
udp_input(ffff800020afe008,ffff800020afe014,11,2) at udp_input+0x1320
ip_deliver(ffff800020afe008,ffff800020afe014,11,2) at ip_deliver+0x353 sys/netinet/ip_input.c:668
ip_ours(ffff800020afe008,ffff800020afe014,8b,0) at ip_ours+0x412
ip_input_if(ffff800020afe008,ffff800020afe014,4,0,ffff800000679800) at ip_input_if+0x6ce
ipv4_input(ffff800000679800,fffffd806dcdc100) at ipv4_input+0x48 sys/netinet/ip_input.c:215
if_input_local(ffff800000679800,fffffd806dcdc100,2) at if_input_local+0xf9 sys/net/if.c:776
ip_output(fffffd807f01e200,0,fffffd806f6e7188,0,0,fffffd806f6e7118) at ip_output+0xae5 ip_mloopback sys/netinet/ip_output.c:1715 [inline]
ip_output(fffffd807f01e200,0,fffffd806f6e7188,0,0,fffffd806f6e7118) at ip_output+0xae5 sys/netinet/ip_output.c:329
udp_output(fffffd806f6e7118,fffffd807f01e200,0,0) at udp_output+0x5af sys/netinet/udp_usrreq.c:1008
somove(fffffd806ec74648,2) at somove+0xf2f sys/kern/uipc_socket.c:1596
sorwakeup(fffffd806ec74648) at sorwakeup+0x79 sys/kern/uipc_socket.c:1645
udp_sbappend(fffffd806f6e7118,fffffd807f01e200,fffffd807f01e2b0,0,14,fffffd807f01e2c4) at udp_sbappend+0x336 sys/netinet/udp_usrreq.c:635
udp_input(ffff800020afe6f8,ffff800020afe704,11,2) at udp_input+0x1320
ip_deliver(ffff800020afe6f8,ffff800020afe704,11,2) at ip_deliver+0x353 sys/netinet/ip_input.c:668
ip_ours(ffff800020afe6f8,ffff800020afe704,8b,0) at ip_ours+0x412
ip_input_if(ffff800020afe6f8,ffff800020afe704,4,0,ffff800000679800) at ip_input_if+0x6ce
ipv4_input(ffff800000679800,fffffd807f01e200) at ipv4_input+0x48 sys/netinet/ip_input.c:215
if_input_local(ffff800000679800,fffffd807f01e200,2) at if_input_local+0xf9 sys/net/if.c:776
ip_output(fffffd806f3cec00,0,fffffd806f6e7188,0,0,fffffd806f6e7118) at ip_output+0xae5 ip_mloopback sys/netinet/ip_output.c:1715 [inline]
ip_output(fffffd806f3cec00,0,fffffd806f6e7188,0,0,fffffd806f6e7118) at ip_output+0xae5 sys/netinet/ip_output.c:329
udp_output(fffffd806f6e7118,fffffd806f3cec00,0,0) at udp_output+0x5af sys/netinet/udp_usrreq.c:1008
somove(fffffd806ec74648,2) at somove+0xf2f sys/kern/uipc_socket.c:1596
sorwakeup(fffffd806ec74648) at sorwakeup+0x79 sys/kern/uipc_socket.c:1645
udp_sbappend(fffffd806f6e7118,fffffd806f3cec00,fffffd806f3cecb0,0,14,fffffd806f3cecc4) at udp_sbappend+0x336 sys/netinet/udp_usrreq.c:635
udp_input(ffff800020afede8,ffff800020afedf4,11,2) at udp_input+0x1320
ip_deliver(ffff800020afede8,ffff800020afedf4,11,2) at ip_deliver+0x353 sys/netinet/ip_input.c:668
ip_ours(ffff800020afede8,ffff800020afedf4,8b,0) at ip_ours+0x412
ip_input_if(ffff800020afede8,ffff800020afedf4,4,0,ffff800000679800) at ip_input_if+0x6ce
ipv4_input(ffff800000679800,fffffd806f3cec00) at ipv4_input+0x48 sys/netinet/ip_input.c:215
if_input_local(ffff800000679800,fffffd806f3cec00,2) at if_input_local+0xf9 sys/net/if.c:776
ip_output(fffffd807f01e700,0,fffffd806f6e7188,0,0,fffffd806f6e7118) at ip_output+0xae5 ip_mloopback sys/netinet/ip_output.c:1715 [inline]
ip_output(fffffd807f01e700,0,fffffd806f6e7188,0,0,fffffd806f6e7118) at ip_output+0xae5 sys/netinet/ip_output.c:329
udp_output(fffffd806f6e7118,fffffd807f01e700,0,0) at udp_output+0x5af sys/netinet/udp_usrreq.c:1008
sosend(fffffd806ec74648,0,ffff800020aff160,0,0,4) at sosend+0x671 sys/kern/uipc_socket.c:549
sendit(ffff800020ade9d0,4,ffff800020aff2c0,4,ffff800020aff3b0) at sendit+0x52b sys/kern/uipc_syscalls.c:657
sys_sendmsg(ffff800020ade9d0,ffff800020aff368,ffff800020aff3b0) at sys_sendmsg+0x1a4 sys/kern/uipc_syscalls.c:562
syscall(ffff800020aff430) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff800020aff430) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffc3360, count: -82
ddb{0}> show registers
rdi 0x2
rsi 0xffffffff8247dcf0 __sancov_gen_cov_switch_values.49
rbp 0xffff800020afc020
rbx 0x2
rdx 0xffff800020afc1c8
rcx 0xfffffd806f3e3600
rax 0xffffffff824fc5a8 inetdomain
r8 0
r9 0xfffffd806f3e36c4
r10 0x61f76e0e26bb26aa
r11 0x24e3da83fe72faa7
r12 0xfffffd806ec74648
r13 0xfffffd806ec746d0
r14 0x10
r15 0
rip 0xffffffff81dd53c5 __sanitizer_cov_trace_switch+0x15
cs 0x8
rflags 0x10202 __ALIGN_SIZE+0xf202
rsp 0xffff800020afc000
ss 0x10
__sanitizer_cov_trace_switch+0x15: pushq %r14
ddb{0}> show proc
PROC (syz-executor0508) pid=499840 stat=onproc
flags process=2<EXEC> proc=0
pri=51, usrpri=51, nice=20
forw=0xffffffffffffffff, list=0xffff800020ade010,0xffff800020adec50
process=0xffff800020ac8018 user=0xffff800020afa000, vmspace=0xfffffd806eab6b88
estcpu=1, cpticks=0, pctcpu=0.0
user=0, sys=0, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
9143 522310 0 0 3 0x14200 bored sosplice
* 1691 499840 4905 0 7 0x2 syz-executor0508
4905 174296 40550 0 3 0x10008a pause ksh
40550 409806 1285 0 3 0x92 select sshd
3765 324520 1 0 3 0x100083 ttyin getty
1285 391735 1 0 3 0x80 select sshd
15676 378061 59930 73 3 0x100090 kqread syslogd
59930 190516 1 0 3 0x100082 netio syslogd
77351 58457 1 77 3 0x100090 poll dhclient
55252 438807 1 0 3 0x80 poll dhclient
83843 217506 0 0 3 0x14200 bored smr
51716 282936 0 0 3 0x14200 pgzero zerothread
92252 505552 0 0 3 0x14200 aiodoned aiodoned
86844 101580 0 0 3 0x14200 syncer update
43755 370577 0 0 3 0x14200 cleaner cleaner
10959 291226 0 0 3 0x14200 reaper reaper
40030 29467 0 0 3 0x14200 pgdaemon pagedaemon
66864 238911 0 0 3 0x14200 bored crynlk
82997 161702 0 0 3 0x14200 bored crypto
50075 24246 0 0 3 0x40014200 acpi0 acpi0
1700 83287 0 0 7 0x40014200 idle1
51183 375318 0 0 3 0x14200 bored softnet
21063 274856 0 0 3 0x14200 bored systqmp
65024 234200 0 0 3 0x14200 bored systq
70690 149393 0 0 3 0x40014200 bored softclock
81377 472294 0 0 3 0x40014200 idle0
1 121496 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
Process 1691 (syz-executor0508) thread 0xffff800020ade9d0 (499840)
exclusive rwlock netlock r = 0 (0xffffffff824f1378)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1164
#1 solock+0x5a sys/kern/uipc_socket2.c:282
#2 sosend+0x559 sys/kern/uipc_socket.c:537
#3 sendit+0x52b sys/kern/uipc_syscalls.c:657
#4 sys_sendmsg+0x1a4 sys/kern/uipc_syscalls.c:562
#5 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#5 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
#6 Xsyscall+0x128
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 9456 6326K 6327K 78643K 10547 0
pcb 13 8K 8K 78643K 13 0
rtable 61 2K 2K 78643K 117 0
ifaddr 24 7K 7K 78643K 24 0
counters 39 33K 33K 78643K 39 0
ioctlops 0 0K 2K 78643K 13 0
mount 1 1K 1K 78643K 1 0
vnodes 1182 74K 74K 78643K 1187 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 1K 78643K 2 0
VM map 2 1K 1K 78643K 2 0
sem 2 0K 0K 78643K 2 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1809 196K 290K 78643K 12766 0
file desc 1 0K 0K 78643K 1 0
proc 47 50K 58K 78643K 278 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
in_multi 11 0K 0K 78643K 11 0
ether_multi 1 0K 0K 78643K 1 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 19 95K 95K 78643K 19 0
exec 0 0K 1K 78643K 151 0
pagedep 1 8K 8K 78643K 1 0
inodedep 1 32K 32K 78643K 1 0
newblk 1 0K 0K 78643K 1 0
VM swap 7 26K 26K 78643K 7 0
UVM amap 54 2K 3K 78643K 688 0
UVM aobj 2 2K 2K 78643K 2 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
NDP 3 0K 0K 78643K 3 0
temp 18 3013K 3077K 78643K 1418 0
kqueue 2 2K 2K 78643K 2 0
SYN cache 2 16K 16K 78643K 2 0
ddb{0}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
arp 64 2 0 0 1 0 1 1 0 8 0
plcache 128 20 0 0 1 0 1 1 0 8 0
rtpcb 80 15 0 13 1 0 1 1 0 8 0
rtentry 112 23 0 1 1 0 1 1 0 8 0
unpcb 120 27 0 19 1 0 1 1 0 8 0
syncache 264 5 0 5 1 0 1 1 0 8 1
tcpcb 544 8 0 5 1 0 1 1 0 8 0
inpcb 280 24 0 17 1 0 1 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 96 0 0 6 0 6 6 0 8 0
art_table 32 97 0 0 1 0 1 1 0 8 0
art_node 16 22 0 2 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino1pl 128 1391 0 15 45 0 45 45 0 8 0
ffsino 272 1391 0 15 92 0 92 92 0 8 0
nchpl 144 1566 0 31 57 0 57 57 0 8 0
uvmvnodes 72 1400 0 0 26 0 26 26 0 8 0
vnodes 208 1400 0 0 74 0 74 74 0 8 0
namei 1024 3447 0 3447 1 0 1 1 0 8 1
percpumem 16 30 0 0 1 0 1 1 0 8 0
scxspl 192 2660 0 2660 2 1 1 2 0 8 1
plimitpl 152 13 0 8 1 0 1 1 0 8 0
sigapl 424 193 0 166 4 0 4 4 0 8 0
knotepl 112 5 0 0 1 0 1 1 0 8 0
kqueuepl 144 2 0 0 1 0 1 1 0 8 0
pipelkpl 48 57 0 53 1 0 1 1 0 8 0
pipepl 120 114 0 107 1 0 1 1 0 8 0
fdescpl 496 177 0 166 2 0 2 2 0 8 0
filepl 152 826 0 781 2 0 2 2 0 8 0
lockfpl 104 5 0 4 1 0 1 1 0 8 0
lockfspl 48 3 0 2 1 0 1 1 0 8 0
sessionpl 112 17 0 9 1 0 1 1 0 8 0
pgrppl 48 17 0 9 1 0 1 1 0 8 0
ucredpl 96 47 0 40 1 0 1 1 0 8 0
zombiepl 144 166 0 166 1 0 1 1 0 8 1
processpl 960 193 0 166 4 0 4 4 0 8 0
procpl 624 193 0 166 3 0 3 3 0 8 0
sosppl 128 1 0 0 1 0 1 1 0 8 0
sockpl 400 66 0 49 2 0 2 2 0 8 0
mcl4k 4096 2 0 0 1 0 1 1 0 8 0
mcl2k 2048 56 0 0 7 0 7 7 0 8 0
mtagpl 80 1 0 0 1 0 1 1 0 8 0
mbufpl 256 78 0 0 5 0 5 5 0 8 0
bufpl 280 1765 0 70 122 0 122 122 0 8 0
anonpl 16 17360 0 16226 6 1 5 6 0 124 0
amapchunkpl 152 466 0 430 2 0 2 2 0 158 0
amappl16 192 68 0 64 1 0 1 1 0 8 0
amappl15 184 1 0 0 1 0 1 1 0 8 0
amappl14 176 1 0 1 1 1 0 1 0 8 0
amappl13 168 12 0 11 1 0 1 1 0 8 0
amappl12 160 14 0 14 1 0 1 1 0 8 1
amappl11 152 57 0 45 1 0 1 1 0 8 0
amappl10 144 5 0 3 1 0 1 1 0 8 0
amappl9 136 205 0 204 1 0 1 1 0 8 0
amappl8 128 203 0 202 1 0 1 1 0 8 0
amappl7 120 76 0 68 1 0 1 1 0 8 0
amappl6 112 12 0 10 1 0 1 1 0 8 0
amappl5 104 171 0 162 1 0 1 1 0 8 0
amappl4 96 419 0 393 1 0 1 1 0 8 0
amappl3 88 99 0 93 1 0 1 1 0 8 0
amappl2 80 714 0 663 2 0 2 2 0 8 0
amappl1 72 12078 0 11690 14 4 10 14 0 8 0
amappl 80 354 0 335 1 0 1 1 0 84 0
dma4096 4096 1 0 1 1 1 0 1 0 8 0
dma256 256 6 0 6 1 1 0 1 0 8 0
dma128 128 253 0 253 1 1 0 1 0 8 0
dma64 64 6 0 6 1 1 0 1 0 8 0
dma32 32 7 0 7 1 1 0 1 0 8 0
dma16 16 18 0 17 1 0 1 1 0 8 0
aobjpl 64 1 0 0 1 0 1 1 0 8 0
uaddrrnd 24 177 0 166 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 177 0 166 1 0 1 1 0 8 0
vmmpekpl 168 5106 0 5085 1 0 1 1 0 8 0
vmmpepl 168 25623 0 24866 44 8 36 44 0 357 3
vmsppl 368 176 0 166 2 0 2 2 0 8 0
pdppl 4096 362 0 332 5 0 5 5 0 8 0
pvpl 32 70333 0 67589 26 0 26 26 0 265 3
pmappl 232 176 0 166 1 0 1 1 0 8 0
extentpl 40 46 0 29 1 0 1 1 0 8 0
phpool 112 131 0 2 4 0 4 4 0 8 0