uvm_fault(0xffffffff82838608, 0x10, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at nd6_dad_duplicated+0x28: movq 0x10(%r14),%r13
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*228500 60958 0 0x14000 0x200 0K softnet
nd6_dad_duplicated(0) at nd6_dad_duplicated+0x28 sys/netinet6/nd6_nbr.c:1265
nd6_ns_input(fffffd80773f0100,28,18) at nd6_ns_input+0xdd4 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline]
nd6_ns_input(fffffd80773f0100,28,18) at nd6_ns_input+0xdd4 sys/netinet6/nd6_nbr.c:301
icmp6_input(ffff800021166ec8,ffff800021166ed4,3a,18) at icmp6_input+0xabe sys/netinet6/icmp6.c:686
ip_deliver(ffff800021166ec8,ffff800021166ed4,3a,18) at ip_deliver+0x322 sys/netinet/ip_input.c:658
ip6_input_if(ffff800021166ec8,ffff800021166ed4,29,0,ffff8000006ae000) at ip6_input_if+0x978
ipv6_input(ffff8000006ae000,fffffd807d6fc500) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171
if_input_local(ffff8000006ae000,fffffd807d6fc500,18) at if_input_local+0x136 sys/net/if.c:778
loinput(ffff8000006ae000,fffffd807d6fc500) at loinput+0x4d sys/net/if_loop.c:238
if_input_process(ffff8000006ae000,ffff800021167008) at if_input_process+0xd2 sys/net/if.c:843
ifiq_process(ffff8000006ae450) at ifiq_process+0x80 sys/net/ifq.c:773
taskq_thread(ffff80000002c000) at taskq_thread+0xe6 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{0}>
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
*cpu0: uvm_fault(0xffffffff82838608, 0x10, 0, 1) -> e
ddb{0}> trace
nd6_dad_duplicated(0) at nd6_dad_duplicated+0x28 sys/netinet6/nd6_nbr.c:1265
nd6_ns_input(fffffd80773f0100,28,18) at nd6_ns_input+0xdd4 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline]
nd6_ns_input(fffffd80773f0100,28,18) at nd6_ns_input+0xdd4 sys/netinet6/nd6_nbr.c:301
icmp6_input(ffff800021166ec8,ffff800021166ed4,3a,18) at icmp6_input+0xabe sys/netinet6/icmp6.c:686
ip_deliver(ffff800021166ec8,ffff800021166ed4,3a,18) at ip_deliver+0x322 sys/netinet/ip_input.c:658
ip6_input_if(ffff800021166ec8,ffff800021166ed4,29,0,ffff8000006ae000) at ip6_input_if+0x978
ipv6_input(ffff8000006ae000,fffffd807d6fc500) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171
if_input_local(ffff8000006ae000,fffffd807d6fc500,18) at if_input_local+0x136 sys/net/if.c:778
loinput(ffff8000006ae000,fffffd807d6fc500) at loinput+0x4d sys/net/if_loop.c:238
if_input_process(ffff8000006ae000,ffff800021167008) at if_input_process+0xd2 sys/net/if.c:843
ifiq_process(ffff8000006ae450) at ifiq_process+0x80 sys/net/ifq.c:773
taskq_thread(ffff80000002c000) at taskq_thread+0xe6 sys/kern/kern_task.c:449
end trace frame: 0x0, count: -11
ddb{0}> show registers
rdi 0
rsi 0
rbp 0xffff800021166a60
rbx 0
rdx 0
rcx 0x7
rax 0xffff8000211482a0
r8 0xffffffff81aa0c0c nd6_ns_input+0x3bc
r9 0x1
r10 0x9cc503db8ef2fa0b
r11 0xb4eaa07fa2330d6d
r12 0
r13 0x2
r14 0
r15 0xffff800000d25800
rip 0xffffffff81aa3438 nd6_dad_duplicated+0x28
cs 0x8
rflags 0x10246 __ALIGN_SIZE+0xf246
rsp 0xffff8000211669e0
ss 0x10
nd6_dad_duplicated+0x28: movq 0x10(%r14),%r13
ddb{0}> show proc
PROC (softnet) pid=228500 stat=onproc
flags process=14000<NOZOMBIE,SYSTEM> proc=200<SYSTEM>
pri=32, usrpri=50, nice=20
forw=0xffffffffffffffff, list=0xffff800021148000,0xffff800021148550
process=0xffff8000ffffc428 user=0xffff800021162000, vmspace=0xffffffff82838608
estcpu=0, cpticks=0, pctcpu=0.0
user=0, sys=0, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
3678 72625 37970 0 2 0 syz-executor.1
3678 173029 37970 0 3 0x4000080 fsleep syz-executor.1
78827 71339 36013 0 2 0 syz-executor.0
78827 82050 36013 0 2 0x4000000 syz-executor.0
36013 81552 83536 0 2 0x482 syz-executor.0
37970 110381 83536 0 3 0x82 nanoslp syz-executor.1
55198 101699 1 0 3 0x100083 ttyin getty
55925 393737 0 0 3 0x14200 acct acct
67613 401792 0 0 3 0x14200 bored sosplice
83536 186680 51951 0 3 0x82 kqread syz-fuzzer
83536 170126 51951 0 3 0x4000082 thrsleep syz-fuzzer
83536 247421 51951 0 3 0x4000082 thrsleep syz-fuzzer
83536 83555 51951 0 3 0x4000082 thrsleep syz-fuzzer
83536 147724 51951 0 3 0x4000082 thrsleep syz-fuzzer
83536 212104 51951 0 3 0x4000082 thrsleep syz-fuzzer
83536 244585 51951 0 3 0x4000082 thrsleep syz-fuzzer
83536 365349 51951 0 3 0x4000082 thrsleep syz-fuzzer
51951 490343 82919 0 3 0x10008a sigsusp ksh
82919 27999 73841 0 3 0x9a kqread sshd
73841 244449 1 0 3 0x88 kqread sshd
33397 78169 37436 74 3 0x100092 bpf pflogd
37436 383027 1 0 3 0x80 netio pflogd
80198 400826 15421 73 3 0x100090 kqread syslogd
15421 450665 1 0 3 0x100082 netio syslogd
19874 424892 1 0 3 0x100080 kqread resolvd
96070 366951 74475 77 3 0x100092 kqread dhcpleased
24468 406455 74475 77 3 0x100092 kqread dhcpleased
74475 273423 1 0 3 0x80 kqread dhcpleased
13386 19984 0 0 3 0x14200 bored smr
33158 518932 0 0 2 0x14200 zerothread
49919 79692 0 0 3 0x14200 aiodoned aiodoned
91863 448797 0 0 3 0x14200 syncer update
54374 275313 0 0 3 0x14200 cleaner cleaner
95800 21828 0 0 3 0x14200 reaper reaper
28525 116163 0 0 3 0x14200 pgdaemon pagedaemon
95820 372209 0 0 3 0x14200 bored viomb
70546 248353 0 0 3 0x40014200 acpi0 acpi0
73705 125362 0 0 7 0x40014200 idle1
*60958 228500 0 0 7 0x14200 softnet
28857 50034 0 0 2 0x14200 systqmp
93940 301808 0 0 3 0x14200 bored systq
75890 471919 0 0 3 0x40014200 bored softclock
31543 15594 0 0 3 0x40014200 idle0
1 5511 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
Process 60958 (softnet) thread 0xffff8000211482a0 (228500)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff829eed80)
#0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182
#1 kpageflttrap+0x229 sys/arch/amd64/amd64/trap.c:274
#2 kerntrap+0xef sys/arch/amd64/amd64/trap.c:318
#3 alltraps_kern_meltdown+0x7b
#4 nd6_dad_duplicated+0x28 sys/netinet6/nd6_nbr.c:1265
#5 nd6_ns_input+0xdd4 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline]
#5 nd6_ns_input+0xdd4 sys/netinet6/nd6_nbr.c:301
#6 icmp6_input+0xabe sys/netinet6/icmp6.c:686
#7 ip_deliver+0x322 sys/netinet/ip_input.c:658
#8 ip6_input_if+0x978
#9 ipv6_input+0x48 sys/netinet6/ip6_input.c:171
#10 if_input_local+0x136 sys/net/if.c:778
#11 loinput+0x4d sys/net/if_loop.c:238
#12 if_input_process+0xd2 sys/net/if.c:843
#13 ifiq_process+0x80 sys/net/ifq.c:773
#14 taskq_thread+0xe6 sys/kern/kern_task.c:449
#15 proc_trampoline+0x1c
exclusive rwlock netlock r = 0 (0xffffffff827a03f0)
#0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182
#1 if_input_process+0xa1 sys/net/if.c:843
#2 ifiq_process+0x80 sys/net/ifq.c:773
#3 taskq_thread+0xe6 sys/kern/kern_task.c:449
#4 proc_trampoline+0x1c
shared rwlock softnet r = 0 (0xffff80000002c070)
#0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182
#1 taskq_thread+0xcb sys/kern/kern_task.c:445
#2 proc_trampoline+0x1c
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10156 6597K 7357K 78643K 25781 0
pcb 14 8K 8K 78643K 786 0
rtable 181 32K 32K 78643K 2203 0
ifaddr 88 24K 25K 78643K 927 0
sysctl 3 1K 1K 78643K 3 0
counters 44 34K 34K 78643K 336 0
ioctlops 0 0K 4K 78643K 3474 0
iov 0 0K 24K 78643K 481 0
mount 1 1K 1K 78643K 1 0
log 0 0K 0K 78643K 5 0
vnodes 1210 76K 76K 78643K 6049 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 5K 78643K 64 0
VM map 2 1K 1K 78643K 2 0
sem 12 0K 1K 78643K 691 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1697 195K 286K 78643K 12598 0
file desc 6 17K 25K 78643K 8720 0
sigio 1 0K 0K 78643K 3421 0
proc 70 87K 111K 78643K 2111 0
subproc 26 1K 1K 78643K 429 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 679 0
in_multi 34 2K 2K 78643K 929 0
ether_multi 1 0K 0K 78643K 140 0
mrt 2 0K 0K 78643K 30 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 103 466K 466K 78643K 103 0
exec 0 0K 2K 78643K 1686 0
pfkey data 0 0K 4K 78643K 16 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 7 26K 26K 78643K 7 0
UVM amap 414 582K 582K 78643K 105932 0
UVM aobj 131 9K 9K 78643K 149 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 940 0
NDP 9 0K 0K 78643K 257 0
temp 109 4236K 4316K 78643K 218960 0
kqueue 12 18K 36K 78643K 634 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
plcache 128 22 0 0 1 0 1 1 0 8 0
rtpcb 120 539 0 536 1 0 1 1 0 8 0
rtentry 112 630 0 595 2 0 2 2 0 8 0
unpcb 128 3121 0 3106 4 2 2 2 0 8 1
syncache 296 34 0 34 12 12 0 1 0 8 0
tcpqe 32 2 0 2 2 2 0 1 0 8 0
tcpcb 736 2179 0 2175 25 23 2 3 0 8 1
arp 120 102 0 96 1 0 1 1 0 8 0
inpcb 304 8170 0 8159 21 19 2 2 0 8 1
nd6 48 143 0 137 2 1 1 1 0 8 0
pkpcb 40 77 0 77 20 20 0 1 0 8 0
kcovpl 48 33 0 31 1 0 1 1 0 8 0
ppxss 1248 27 0 27 15 14 1 1 0 8 1
pfstscr 40 6 0 6 2 2 0 1 0 8 0
pffrag 232 76 0 75 9 8 1 1 0 482 0
pffrnode 88 76 0 75 9 8 1 1 0 8 0
pffrent 40 1027 0 1026 11 10 1 1 0 8 0
pfosfp 40 1430 0 1005 5 0 5 5 0 8 0
pfosfpen 112 1430 0 714 21 0 21 21 0 8 0
pfrktable 1344 190 0 151 7 3 4 4 0 8 0
pftag 88 24 0 17 3 2 1 1 0 8 0
pfstitem 24 51 0 49 1 0 1 1 0 8 0
pfstkey 112 63 0 61 1 0 1 1 0 8 0
pfstate 320 57 0 55 3 2 1 3 0 8 0
pfrule 1360 1423 0 1001 40 4 36 36 0 8 0
art_heap8 4096 9 0 8 7 6 1 3 0 8 0
art_heap4 256 3110 0 2928 33 21 12 15 0 8 0
art_table 32 3119 0 2936 2 0 2 2 0 8 0
art_node 16 627 0 595 1 0 1 1 0 8 0
sysvmsgpl 40 52 0 26 1 0 1 1 0 8 0
semupl 112 3 0 3 1 1 0 1 0 8 0
semapl 112 689 0 679 1 0 1 1 0 8 0
shmpl 112 146 0 18 4 0 4 4 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 12200 0 10765 91 0 91 91 0 8 0
ffsino 272 12200 0 10765 97 0 97 97 0 8 0
nchpl 144 23523 0 23050 61 42 19 61 0 8 0
uvmvnodes 72 6068 0 0 111 0 111 111 0 8 0
vnodes 224 6068 0 0 357 0 357 357 0 8 0
namei 1024 76407 0 76407 13 12 1 1 0 8 1
percpumem 16 180 0 146 1 0 1 1 0 8 0
vcpupl 2048 56 0 0 7 0 7 7 0 8 0
vmpool 560 72 0 16 6 2 4 4 0 8 0
pfiaddrpl 120 93 0 42 3 1 2 2 0 8 0
scsiplug 72 4 0 4 3 3 0 1 0 8 0
scxspl 216 85717 0 85717 25 24 1 8 0 8 1
plimitpl 152 561 0 552 1 0 1 1 0 8 0
sigapl 424 8928 0 8893 10 3 7 7 0 8 2
futexpl 64 127413 0 127412 12 11 1 1 0 8 0
knotepl 112 189 0 0 3 0 3 3 0 8 0
kqueuepl 216 1354 0 1341 6 4 2 2 0 8 1
pipepl 336 1473 0 1463 12 10 2 2 0 8 0
fdescpl 496 8870 0 8851 3 0 3 3 0 8 0
filepl 152 48651 0 48537 21 15 6 6 0 8 1
lockfpl 104 1693 0 1691 1 0 1 1 0 8 0
lockfspl 48 574 0 572 1 0 1 1 0 8 0
sessionpl 144 57 0 46 1 0 1 1 0 8 0
pgrppl 48 95 0 84 1 0 1 1 0 8 0
ucredpl 96 4748 0 4736 1 0 1 1 0 8 0
zombiepl 144 8893 0 8893 3 2 1 1 0 8 1
processpl 1064 8928 0 8893 5 1 4 4 0 8 0
procpl 672 20721 0 20677 10 4 6 6 0 8 1
srpgc 96 9 0 9 5 5 0 1 0 8 0
sosppl 168 454 0 454 18 17 1 1 0 8 1
sockpl 480 11924 0 11895 26 20 6 6 0 8 2
mcl64k 65536 17 0 0 3 0 3 3 0 8 0
mcl16k 16384 4 0 0 1 0 1 1 0 8 0
mcl12k 12288 17 0 0 2 0 2 2 0 8 0
mcl9k 9216 12 0 0 1 0 1 1 0 8 0
mcl8k 8192 14 0 0 2 0 2 2 0 8 0
mcl4k 4096 17 0 0 3 0 3 3 0 8 0
mcl2k2 2112 4 0 0 1 0 1 1 0 8 0
mcl2k 2048 284 0 0 28 2 26 28 0 8 0
mtagpl 96 202 0 0 3 0 3 3 0 8 0
mbufpl 256 1106 0 0 37 0 37 37 0 8 0
bufpl 280 21503 0 15174 453 0 453 453 0 8 0
anonpl 24 2494689 0 2476131 314 186 128 158 0 186 0
amapchunkpl 152 256180 0 255446 156 127 29 42 0 158 0
amappl16 200 21541 0 20816 181 139 42 51 0 8 3
amappl15 192 1440 0 1434 1 0 1 1 0 8 0
amappl14 184 1271 0 1269 1 0 1 1 0 8 0
amappl13 176 878 0 876 1 0 1 1 0 8 0
amappl12 168 1201 0 1195 1 0 1 1 0 8 0
amappl11 160 1128 0 1111 1 0 1 1 0 8 0
amappl10 152 141 0 137 1 0 1 1 0 8 0
amappl9 144 2916 0 2910 1 0 1 1 0 8 0
amappl8 136 1943 0 1846 4 0 4 4 0 8 0
amappl7 128 1062 0 1053 1 0 1 1 0 8 0
amappl6 120 2839 0 2825 1 0 1 1 0 8 0
amappl5 112 6436 0 6407 1 0 1 1 0 8 0
amappl4 104 3808 0 3780 1 0 1 1 0 8 0
amappl3 96 2078 0 2055 1 0 1 1 0 8 0
amappl2 88 10606 0 10554 3 1 2 2 0 8 0
amappl1 80 149196 0 148735 15 5 10 13 0 8 0
amappl 88 104874 0 104641 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 64 148 0 18 3 0 3 3 0 8 0
uaddrrnd 24 8942 0 8867 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 8942 0 8867 1 0 1 1 0 8 0
vmmpekpl 168 54353 0 54314 3 0 3 3 0 8 0
vmmpepl 168 795986 0 793696 503 368 135 136 0 357 35
vmsppl 368 8941 0 8867 8 1 7 7 0 8 0
rwobjpl 56 182320 0 180684 54 30 24 27 0 8 0
pdppl 4096 17892 0 17790 153 51 102 102 0 8 0
pvpl 32 4448052 0 4426737 577 385 192 269 0 265 0
pmappl 224 8941 0 8867 7 2 5 5 0 8 0
extentpl 40 58 0 40 1 0 1 1 0 8 0
phpool 112 566 0 132 13 0 13 13 0 8 0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
nd6_dad_duplicated(0) at nd6_dad_duplicated+0x28 sys/netinet6/nd6_nbr.c:1265
nd6_ns_input(fffffd80773f0100,28,18) at nd6_ns_input+0xdd4 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline]
nd6_ns_input(fffffd80773f0100,28,18) at nd6_ns_input+0xdd4 sys/netinet6/nd6_nbr.c:301
icmp6_input(ffff800021166ec8,ffff800021166ed4,3a,18) at icmp6_input+0xabe sys/netinet6/icmp6.c:686
ip_deliver(ffff800021166ec8,ffff800021166ed4,3a,18) at ip_deliver+0x322 sys/netinet/ip_input.c:658
ip6_input_if(ffff800021166ec8,ffff800021166ed4,29,0,ffff8000006ae000) at ip6_input_if+0x978
ipv6_input(ffff8000006ae000,fffffd807d6fc500) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171
if_input_local(ffff8000006ae000,fffffd807d6fc500,18) at if_input_local+0x136 sys/net/if.c:778
loinput(ffff8000006ae000,fffffd807d6fc500) at loinput+0x4d sys/net/if_loop.c:238
if_input_process(ffff8000006ae000,ffff800021167008) at if_input_process+0xd2 sys/net/if.c:843
ifiq_process(ffff8000006ae450) at ifiq_process+0x80 sys/net/ifq.c:773
taskq_thread(ffff80000002c000) at taskq_thread+0xe6 sys/kern/kern_task.c:449
end trace frame: 0x0, count: -11
ddb{0}> machine ddbcpu 1
Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp
x86_ipi_db(ffff800020d38ff0) 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
acpicpu_idle() at acpicpu_idle+0x2eb sys/dev/acpi/acpicpu.c:1206
sched_idle(ffff800020d38ff0) at sched_idle+0x417 sys/kern/kern_sched.c:178
end trace frame: 0x0, count: 10
ddb{1}> trace
x86_ipi_db(ffff800020d38ff0) 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
acpicpu_idle() at acpicpu_idle+0x2eb sys/dev/acpi/acpicpu.c:1206
sched_idle(ffff800020d38ff0) at sched_idle+0x417 sys/kern/kern_sched.c:178
end trace frame: 0x0, count: -5