panic: rw_enter: rtlck locking against myself
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
481281 7939 0 0x2 0 0 syz-executor.6
*227014 40876 0 0x14000 0x200 1 softnet
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff8279852b) at panic+0x177 sys/kern/subr_prf.c:198
rw_enter(ffffffff82b9b020,1) at rw_enter+0x482 rw_enter_diag sys/kern/kern_rwlock.c:183 [inline]
rw_enter(ffffffff82b9b020,1) at rw_enter+0x482 sys/kern/kern_rwlock.c:274
arpresolve(ffff8000001a02a8,fffffd806eeaa230,fffffd8068272000,ffff8000006c8cc0,ffff800021197798) at arpresolve+0x3ce sys/netinet/if_ether.c:423
ether_resolve(ffff8000001a02a8,fffffd8068272000,ffff8000006c8cc0,fffffd806eeaa230,ffff800021197798) at ether_resolve+0x215 sys/net/if_ethersubr.c:224
ether_output(ffff8000001a02a8,fffffd8068272000,ffff8000006c8cc0,fffffd806eeaa230) at ether_output+0x47 ether_encap sys/net/if_ethersubr.c:330 [inline]
ether_output(ffff8000001a02a8,fffffd8068272000,ffff8000006c8cc0,fffffd806eeaa230) at ether_output+0x47 sys/net/if_ethersubr.c:359
arpcache(ffff8000001a02a8,fffffd806d42381a,fffffd806eeaa230) at arpcache+0x2e8 sys/netinet/if_ether.c:734
in_arpinput(ffff8000001a02a8,fffffd80680abe00) at in_arpinput+0x4c1 sys/netinet/if_ether.c:615
arpintr() at arpintr+0x71 sys/netinet/if_ether.c:538
if_netisr(0) at if_netisr+0xcf sys/net/if.c:912
taskq_thread(ffff80000002c000) at taskq_thread+0xe5 sys/kern/kern_task.c:449
end trace frame: 0x0, count: 4
https://www.openbsd.org/ddb.html describes the minimum info required in bug
reports. Insufficient info makes it difficult to find and fix bugs.
ddb{1}>
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
*cpu1: rw_enter: rtlck locking against myself
ddb{1}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff8279852b) at panic+0x177 sys/kern/subr_prf.c:198
rw_enter(ffffffff82b9b020,1) at rw_enter+0x482 rw_enter_diag sys/kern/kern_rwlock.c:183 [inline]
rw_enter(ffffffff82b9b020,1) at rw_enter+0x482 sys/kern/kern_rwlock.c:274
arpresolve(ffff8000001a02a8,fffffd806eeaa230,fffffd8068272000,ffff8000006c8cc0,ffff800021197798) at arpresolve+0x3ce sys/netinet/if_ether.c:423
ether_resolve(ffff8000001a02a8,fffffd8068272000,ffff8000006c8cc0,fffffd806eeaa230,ffff800021197798) at ether_resolve+0x215 sys/net/if_ethersubr.c:224
ether_output(ffff8000001a02a8,fffffd8068272000,ffff8000006c8cc0,fffffd806eeaa230) at ether_output+0x47 ether_encap sys/net/if_ethersubr.c:330 [inline]
ether_output(ffff8000001a02a8,fffffd8068272000,ffff8000006c8cc0,fffffd806eeaa230) at ether_output+0x47 sys/net/if_ethersubr.c:359
arpcache(ffff8000001a02a8,fffffd806d42381a,fffffd806eeaa230) at arpcache+0x2e8 sys/netinet/if_ether.c:734
in_arpinput(ffff8000001a02a8,fffffd80680abe00) at in_arpinput+0x4c1 sys/netinet/if_ether.c:615
arpintr() at arpintr+0x71 sys/netinet/if_ether.c:538
if_netisr(0) at if_netisr+0xcf sys/net/if.c:912
taskq_thread(ffff80000002c000) at taskq_thread+0xe5 sys/kern/kern_task.c:449
end trace frame: 0x0, count: -11
ddb{1}> show registers
rdi 0
rsi 0x1
rbp 0xffff8000211974d0
rbx 0xffff800020d69b8f
rdx 0
rcx 0
rax 0xffff8000211782b8
r8 0x101010101010101
r9 0x8080808080808080
r10 0x996375af9dac3f2a
r11 0x2cb6e1639af58c28
r12 0xffff800020d69990
r13 0
r14 0
r15 0x1
rip 0xffffffff8229d9e8 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff8000211974c0
ss 0
db_enter+0x18: addq $0x8,%rsp
ddb{1}> show proc
PROC (softnet) pid=227014 stat=onproc
flags process=14000<NOZOMBIE,SYSTEM> proc=200<SYSTEM>
pri=32, usrpri=50, nice=20
forw=0xffffffffffffffff, list=0xffff800021178828,0xffff800021178010
process=0xffff8000ffffc000 user=0xffff800021192000, vmspace=0xffffffff82bfa0e8
estcpu=0, cpticks=0, pctcpu=0.0
user=0, sys=0, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
5924 121146 22660 0 2 0 syz-executor.3
53642 372277 9486 0 3 0x82 wait syz-executor.7
84388 5366 9486 0 3 0x82 piperd syz-executor.0
88007 109837 9486 0 3 0x82 wait syz-executor.1
7939 481281 9486 0 7 0x2 syz-executor.6
98562 162502 1 0 3 0x100083 ttyin getty
82990 37937 0 0 3 0x14200 acct acct
11892 405419 0 0 3 0x14280 nfsidl nfsio
61390 85176 0 0 3 0x14280 nfsidl nfsio
14340 399924 0 0 3 0x14280 nfsidl nfsio
73271 103090 0 0 3 0x14280 nfsidl nfsio
63492 249592 0 0 3 0x14280 nfsidl nfsio
80404 49872 0 0 3 0x14280 nfsidl nfsio
9648 277771 0 0 3 0x14280 nfsidl nfsio
64926 27355 0 0 3 0x14280 nfsidl nfsio
78681 97398 0 0 3 0x14280 nfsidl nfsio
26181 28319 0 0 3 0x14280 nfsidl nfsio
49961 115116 0 0 3 0x14280 nfsidl nfsio
55958 276948 0 0 3 0x14280 nfsidl nfsio
90356 47026 0 0 3 0x14280 nfsidl nfsio
91354 376106 0 0 3 0x14280 nfsidl nfsio
16528 398476 0 0 3 0x14280 nfsidl nfsio
14566 203600 0 0 3 0x14280 nfsidl nfsio
90246 107533 0 0 3 0x14280 nfsidl nfsio
54698 107135 0 0 3 0x14280 nfsidl nfsio
37094 167477 0 0 3 0x14280 nfsidl nfsio
42840 291218 0 0 3 0x14280 nfsidl nfsio
59426 197494 9486 0 3 0x82 piperd syz-executor.4
93614 228280 0 0 3 0x14200 bored sosplice
94799 464701 49570 0 3 0x100082 netio arp
46600 495434 9486 0 3 0x82 piperd syz-executor.5
49570 81872 1 0 3 0x10008a sigsusp sh
68263 203930 9486 0 3 0x82 piperd syz-executor.2
22660 286806 9486 0 3 0x82 nanoslp syz-executor.3
9486 446886 58725 0 3 0x82 thrsleep syz-fuzzer
9486 496199 58725 0 3 0x4000082 nanoslp syz-fuzzer
9486 445825 58725 0 2 0x4000002 syz-fuzzer
9486 445563 58725 0 2 0x4000002 syz-fuzzer
9486 9009 58725 0 3 0x4000082 thrsleep syz-fuzzer
9486 141669 58725 0 3 0x4000082 wait syz-fuzzer
9486 140419 58725 0 3 0x4000082 wait syz-fuzzer
9486 39185 58725 0 3 0x4000082 thrsleep syz-fuzzer
9486 412624 58725 0 3 0x4000082 thrsleep syz-fuzzer
9486 139423 58725 0 3 0x4000082 wait syz-fuzzer
9486 365333 58725 0 3 0x4000082 wait syz-fuzzer
9486 289971 58725 0 3 0x4000082 wait syz-fuzzer
9486 97551 58725 0 3 0x4000082 wait syz-fuzzer
9486 311027 58725 0 3 0x4000082 thrsleep syz-fuzzer
9486 438411 58725 0 3 0x4000082 wait syz-fuzzer
9486 63236 58725 0 3 0x4000082 wait syz-fuzzer
58725 115398 60743 0 3 0x10008a sigsusp ksh
60743 298207 28007 0 3 0x9a kqread sshd
28007 464162 1 0 3 0x88 kqread sshd
33768 251256 4501 74 3 0x1100092 bpf pflogd
4501 176115 1 0 3 0x80 netio pflogd
442 397046 94395 73 3 0x1100090 kqread syslogd
94395 270213 1 0 3 0x100082 netio syslogd
2388 10866 1 0 3 0x100080 kqread resolvd
58585 108447 6405 77 3 0x100092 kqread dhcpleased
97861 300232 6405 77 3 0x100092 kqread dhcpleased
6405 499874 1 0 3 0x80 kqread dhcpleased
26594 252780 0 0 3 0x14200 bored smr
29655 146476 0 0 3 0x14200 pgzero zerothread
3427 511950 0 0 3 0x14200 aiodoned aiodoned
38100 34059 0 0 3 0x14200 syncer update
13875 483137 0 0 3 0x14200 cleaner cleaner
49219 344938 0 0 3 0x14200 reaper reaper
20972 172960 0 0 3 0x14200 pgdaemon pagedaemon
44936 243765 0 0 3 0x14200 bored viomb
33134 251955 0 0 3 0x40014200 acpi0 acpi0
37083 94475 0 0 3 0x40014200 idle1
71651 470253 0 0 3 0x14200 bored softnet
64382 145764 0 0 3 0x14200 bored softnet
42811 372184 0 0 3 0x14200 bored softnet
*40876 227014 0 0 7 0x14200 softnet
23969 231385 0 0 3 0x14200 bored systqmp
44333 248913 0 0 3 0x14200 bored systq
68299 110541 0 0 3 0x40014200 bored softclock
89780 218802 0 0 3 0x40014200 idle0
1 216117 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10231 6490K 7007K 78643K 18082 0
pcb 13 12K 14K 78643K 896 0
rtable 241 16K 16K 78643K 1005 0
ifaddr 97 29K 30K 78643K 351 0
sysctl 2 0K 0K 78643K 2 0
counters 60 35K 36K 78643K 196 0
ioctlops 0 0K 4K 78643K 1810 0
iov 0 0K 24K 78643K 475 0
mount 1 1K 1K 78643K 1 0
log 0 0K 0K 78643K 4 0
vnodes 1631 102K 102K 78643K 7338 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 5K 78643K 33 0
VM map 2 1K 1K 78643K 2 0
sem 12 0K 1K 78643K 507 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1697 195K 286K 78643K 12548 0
file desc 15 53K 97K 78643K 5074 0
sigio 0 0K 0K 78643K 25 0
proc 70 91K 128K 78643K 1052 0
subproc 117 7K 8K 78643K 278 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 323 0
in_multi 106 7K 7K 78643K 339 0
ether_multi 1 0K 0K 78643K 30 0
mrt 1 0K 0K 78643K 20 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 145 652K 652K 78643K 145 0
exec 0 0K 1K 78643K 896 0
tdb 3 0K 0K 78643K 3 0
pagedep 1 8K 8K 78643K 1 0
inodedep 1 32K 32K 78643K 1 0
newblk 1 0K 0K 78643K 1 0
VM swap 8 62K 64K 78643K 10 0
UVM amap 350 90K 100K 78643K 36355 0
UVM aobj 131 4K 4K 78643K 137 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 98 0
NDP 15 0K 1K 78643K 110 0
temp 145 5774K 6799K 78643K 46848 0
kqueue 12 18K 24K 78643K 352 0
SYN cache 2 16K 16K 78643K 2 0
ddb{1}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
plcache 128 22 0 0 1 0 1 1 0 8 0
rtpcb 120 343 0 339 5 4 1 3 0 8 0
rtentry 112 335 0 229 5 1 4 4 0 8 0
unpcb 144 4085 0 4070 76 75 1 8 0 8 0
syncache 296 10 0 10 3 3 0 1 0 8 0
tcpqe 32 311 0 311 3 3 0 1 0 8 0
tcpcb 776 1532 0 1528 84 78 6 8 0 8 5
arp 120 45 0 26 1 0 1 1 0 8 0
inpcb 368 4124 0 4117 176 171 5 7 0 8 4
nd6 48 63 0 38 1 0 1 1 0 8 0
kcovpl 48 20 0 11 1 0 1 1 0 8 0
mppekey 1024 3 0 3 2 2 0 1 0 8 0
ppxss 1256 32 0 32 12 11 1 1 0 8 1
pppxif 1456 12 0 12 6 5 1 1 0 8 1
pfstscr 40 17 0 16 1 0 1 1 0 8 0
pffrag 232 6 0 6 4 4 0 1 0 482 0
pffrnode 88 6 0 6 4 4 0 1 0 8 0
pffrent 40 17 0 17 6 6 0 1 0 8 0
pfosfp 40 1428 0 1005 5 0 5 5 0 8 0
pfosfpen 112 1428 0 714 21 0 21 21 0 8 0
pfanchor 1280 918 0 480 53 11 42 42 0 8 0
pfstitem 24 53 0 49 1 0 1 1 0 8 0
pfstkey 128 75 0 71 1 0 1 1 0 8 0
pfstate 384 58 0 55 4 3 1 3 0 8 0
pfrule 1344 21 0 20 2 1 1 2 0 8 0
rttmr 136 2 0 2 1 1 0 1 0 8 0
art_heap8 4096 2 0 1 2 1 1 2 0 8 0
art_heap4 256 1437 0 965 46 15 31 31 0 8 1
art_table 32 1439 0 966 4 0 4 4 0 8 0
art_node 16 302 0 210 1 0 1 1 0 8 0
sysvmsgpl 40 46 0 6 1 0 1 1 0 8 0
semupl 112 1 0 1 1 1 0 1 0 8 0
semapl 112 503 0 493 1 0 1 1 0 8 0
shmpl 112 134 0 6 4 0 4 4 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 10748 0 9297 91 0 91 91 0 8 0
ffsino 272 10748 0 9297 98 0 98 98 0 8 0
nchpl 144 17354 0 15717 63 0 63 63 0 8 0
uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0
vnodes 216 5926 0 0 330 0 330 330 0 8 0
namei 1024 65621 0 65620 19 18 1 2 0 8 0
percpumem 16 111 0 68 1 0 1 1 0 8 0
vmpool 696 18 0 18 6 6 0 1 0 8 0
kstatmem 264 134 0 104 9 6 3 3 0 8 1
scsiplug 72 9 0 9 5 5 0 1 0 8 0
scxspl 216 46577 0 46576 39 38 1 8 0 8 0
plimitpl 152 607 0 590 1 0 1 1 0 8 0
sigapl 424 5388 0 5321 12 3 9 9 0 8 0
futexpl 64 37040 0 37040 28 27 1 1 0 8 1
knotepl 120 1021 0 0 12 2 10 11 0 8 0
kqueuepl 216 942 0 934 25 24 1 5 0 8 0
pipepl 320 1488 0 1457 69 66 3 9 0 8 0
fdescpl 496 5349 0 5321 7 2 5 5 0 8 0
filepl 152 45352 0 45090 236 219 17 24 0 8 2
lockfpl 104 1540 0 1538 5 4 1 2 0 8 0
lockfspl 48 375 0 373 1 0 1 1 0 8 0
sessionpl 144 37 0 19 1 0 1 1 0 8 0
pgrppl 48 46 0 28 1 0 1 1 0 8 0
ucredpl 104 16614 0 16602 1 0 1 1 0 8 0
zombiepl 144 5323 0 5321 2 1 1 1 0 8 0
processpl 1072 5388 0 5321 5 0 5 5 0 8 0
procpl 696 14556 0 14474 25 15 10 11 0 8 0
srpgc 96 16 0 16 7 7 0 1 0 8 0
sosppl 168 44 0 44 12 12 0 1 0 8 0
sockpl 488 8555 0 8529 376 366 10 26 0 8 6
mcl64k 65536 32 0 0 3 0 3 3 0 8 0
mcl16k 16384 22 0 0 3 1 2 3 0 8 0
mcl12k 12288 25 0 0 2 0 2 2 0 8 0
mcl9k 9216 22 0 0 2 0 2 2 0 8 0
mcl8k 8192 73 0 0 9 6 3 6 0 8 0
mcl4k 4096 33 0 0 4 1 3 3 0 8 0
mcl2k2 2112 5 0 0 1 0 1 1 0 8 0
mcl2k 2048 519 0 0 51 25 26 51 0 8 0
mtagpl 96 344 0 0 7 1 6 7 0 8 0
mbufpl 256 1947 0 0 73 0 73 73 0 8 0
bufpl 288 11761 0 5436 452 0 452 452 0 8 0
anonpl 24 1068958 0 1050991 192 72 120 175 0 186 0
amapchunkpl 152 101649 0 100886 99 66 33 60 0 158 0
amappl16 200 9214 0 8659 56 26 30 35 0 8 0
amappl15 192 36 0 35 1 0 1 1 0 8 0
amappl14 184 235 0 217 3 1 2 2 0 8 0
amappl13 176 18 0 17 1 0 1 1 0 8 0
amappl12 168 575 0 569 1 0 1 1 0 8 0
amappl11 160 60 0 46 1 0 1 1 0 8 0
amappl10 152 54 0 41 1 0 1 1 0 8 0
amappl9 144 974 0 974 2 2 0 1 0 8 0
amappl8 136 294 0 214 3 0 3 3 0 8 0
amappl7 128 187 0 161 2 0 2 2 0 8 0
amappl6 120 238 0 222 1 0 1 1 0 8 0
amappl5 112 229 0 219 1 0 1 1 0 8 0
amappl4 104 659 0 624 3 1 2 2 0 8 0
amappl3 96 15400 0 15347 2 0 2 2 0 8 0
amappl2 88 5967 0 5884 4 1 3 3 0 8 0
amappl1 80 122038 0 121275 23 4 19 23 0 8 0
amappl 88 35582 0 35395 6 0 6 6 0 92 0
dma4096 4096 1 0 1 1 1 0 1 0 8 0
dma1024 1024 1 0 0 1 0 1 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 72 136 0 6 3 0 3 3 0 8 0
uaddrrnd 24 5367 0 5339 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 5367 0 5339 1 0 1 1 0 8 0
vmmpekpl 168 46022 0 45947 5 1 4 4 0 8 0
vmmpepl 168 490838 0 488105 380 241 139 160 0 357 0
vmsppl 368 5366 0 5339 7 4 3 4 0 8 0
rwobjpl 56 133738 0 125881 119 6 113 113 0 8 0
pdppl 4096 10741 0 10678 838 769 69 85 0 8 6
pvpl 32 2148230 0 2124477 468 259 209 309 0 265 0
pmappl 248 5366 0 5339 4 1 3 3 0 8 0
extentpl 40 56 0 38 1 0 1 1 0 8 0
phpool 112 1892 0 1026 26 0 26 26 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp
x86_ipi_db(ffffffff82b8dff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
__mp_lock(ffffffff82dc73e0) at __mp_lock+0x28 sys/kern/kern_lock.c:137
__mp_acquire_count(ffffffff82dc73e0,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227
tsleep(fffffd8069f08258,11,ffffffff827cecbf,0) at tsleep+0x179
biowait(fffffd8069f08258) at biowait+0x91 sys/kern/vfs_bio.c:1268
bwrite(fffffd8069f08258) at bwrite+0x21b sys/kern/vfs_bio.c:769
ffs_update(fffffd8068390110,1) at ffs_update+0x27d sys/ufs/ffs/ffs_inode.c:113
ufs_mkdir(ffff80002a3df490) at ufs_mkdir+0x433 sys/ufs/ufs/ufs_vnops.c:1185
VOP_MKDIR(fffffd8061aa6798,ffff80002a3df5f0,ffff80002a3df620,ffff80002a3df520) at VOP_MKDIR+0xbf sys/kern/vfs_vops.c:388
domkdirat(ffff80002121c2d0,ffffff9c,7f7ffffe3090,1ff) at domkdirat+0x121 sys/kern/vfs_syscalls.c:3112
syscall(ffff80002a3df7a0) at syscall+0x555 mi_syscall sys/sys/syscall_mi.h:113 [inline]
syscall(ffff80002a3df7a0) at syscall+0x555 sys/arch/amd64/amd64/trap.c:626
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffe3100, count: 1
ddb{0}> trace
x86_ipi_db(ffffffff82b8dff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
__mp_lock(ffffffff82dc73e0) at __mp_lock+0x28 sys/kern/kern_lock.c:137
__mp_acquire_count(ffffffff82dc73e0,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227
tsleep(fffffd8069f08258,11,ffffffff827cecbf,0) at tsleep+0x179
biowait(fffffd8069f08258) at biowait+0x91 sys/kern/vfs_bio.c:1268
bwrite(fffffd8069f08258) at bwrite+0x21b sys/kern/vfs_bio.c:769
ffs_update(fffffd8068390110,1) at ffs_update+0x27d sys/ufs/ffs/ffs_inode.c:113
ufs_mkdir(ffff80002a3df490) at ufs_mkdir+0x433 sys/ufs/ufs/ufs_vnops.c:1185
VOP_MKDIR(fffffd8061aa6798,ffff80002a3df5f0,ffff80002a3df620,ffff80002a3df520) at VOP_MKDIR+0xbf sys/kern/vfs_vops.c:388
domkdirat(ffff80002121c2d0,ffffff9c,7f7ffffe3090,1ff) at domkdirat+0x121 sys/kern/vfs_syscalls.c:3112
syscall(ffff80002a3df7a0) at syscall+0x555 mi_syscall sys/sys/syscall_mi.h:113 [inline]
syscall(ffff80002a3df7a0) at syscall+0x555 sys/arch/amd64/amd64/trap.c:626
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffe3100, count: -14
ddb{0}> machine ddbcpu 1
Stopped at db_enter+0x18: addq $0x8,%rsp
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff8279852b) at panic+0x177 sys/kern/subr_prf.c:198
rw_enter(ffffffff82b9b020,1) at rw_enter+0x482 rw_enter_diag sys/kern/kern_rwlock.c:183 [inline]
rw_enter(ffffffff82b9b020,1) at rw_enter+0x482 sys/kern/kern_rwlock.c:274
arpresolve(ffff8000001a02a8,fffffd806eeaa230,fffffd8068272000,ffff8000006c8cc0,ffff800021197798) at arpresolve+0x3ce sys/netinet/if_ether.c:423
ether_resolve(ffff8000001a02a8,fffffd8068272000,ffff8000006c8cc0,fffffd806eeaa230,ffff800021197798) at ether_resolve+0x215 sys/net/if_ethersubr.c:224
ether_output(ffff8000001a02a8,fffffd8068272000,ffff8000006c8cc0,fffffd806eeaa230) at ether_output+0x47 ether_encap sys/net/if_ethersubr.c:330 [inline]
ether_output(ffff8000001a02a8,fffffd8068272000,ffff8000006c8cc0,fffffd806eeaa230) at ether_output+0x47 sys/net/if_ethersubr.c:359
arpcache(ffff8000001a02a8,fffffd806d42381a,fffffd806eeaa230) at arpcache+0x2e8 sys/netinet/if_ether.c:734
in_arpinput(ffff8000001a02a8,fffffd80680abe00) at in_arpinput+0x4c1 sys/netinet/if_ether.c:615
arpintr() at arpintr+0x71 sys/netinet/if_ether.c:538
if_netisr(0) at if_netisr+0xcf sys/net/if.c:912
taskq_thread(ffff80000002c000) at taskq_thread+0xe5 sys/kern/kern_task.c:449
end trace frame: 0x0, count: 4
ddb{1}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff8279852b) at panic+0x177 sys/kern/subr_prf.c:198
rw_enter(ffffffff82b9b020,1) at rw_enter+0x482 rw_enter_diag sys/kern/kern_rwlock.c:183 [inline]
rw_enter(ffffffff82b9b020,1) at rw_enter+0x482 sys/kern/kern_rwlock.c:274
arpresolve(ffff8000001a02a8,fffffd806eeaa230,fffffd8068272000,ffff8000006c8cc0,ffff800021197798) at arpresolve+0x3ce sys/netinet/if_ether.c:423
ether_resolve(ffff8000001a02a8,fffffd8068272000,ffff8000006c8cc0,fffffd806eeaa230,ffff800021197798) at ether_resolve+0x215 sys/net/if_ethersubr.c:224
ether_output(ffff8000001a02a8,fffffd8068272000,ffff8000006c8cc0,fffffd806eeaa230) at ether_output+0x47 ether_encap sys/net/if_ethersubr.c:330 [inline]
ether_output(ffff8000001a02a8,fffffd8068272000,ffff8000006c8cc0,fffffd806eeaa230) at ether_output+0x47 sys/net/if_ethersubr.c:359
arpcache(ffff8000001a02a8,fffffd806d42381a,fffffd806eeaa230) at arpcache+0x2e8 sys/netinet/if_ether.c:734
in_arpinput(ffff8000001a02a8,fffffd80680abe00) at in_arpinput+0x4c1 sys/netinet/if_ether.c:615
arpintr() at arpintr+0x71 sys/netinet/if_ether.c:538
if_netisr(0) at if_netisr+0xcf sys/net/if.c:912
taskq_thread(ffff80000002c000) at taskq_thread+0xe5 sys/kern/kern_task.c:449
end trace frame: 0x0, count: -11