uvm_fault: nd6_dad_duplicated
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syzbot
Aug 7, 2020, 9:32:22 PM8/7/20
to syzkaller-o...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 42858fb0 Do not hardcode the key length.
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=113e7134900000
kernel config: https://syzkaller.appspot.com/x/.config?x=fe55924c11e64b0a
dashboard link: https://syzkaller.appspot.com/bug?extid=0dca639bbac9d36577eb
Unfortunately, I don't have any reproducer for this issue yet.
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+0dca63...@syzkaller.appspotmail.com
uvm_fault(0xffffffff8281f6c8, 0x10, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at nd6_dad_duplicated+0x28: movq 0x10(%r14),%r13
ddb>
ddb> set $lines = 0
ddb> set $maxwidth = 0
ddb> show panic
kernel page fault
uvm_fault(0xffffffff8281f6c8, 0x10, 0, 1) -> e
nd6_dad_duplicated(0) at nd6_dad_duplicated+0x28 sys/netinet6/nd6_nbr.c:1265
end trace frame: 0xffff80001d675ce0, count: 0
ddb> trace
nd6_dad_duplicated(0) at nd6_dad_duplicated+0x28 sys/netinet6/nd6_nbr.c:1265
nd6_ns_input(fffffd80532d4100,28,18) at nd6_ns_input+0xdd0 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline]
nd6_ns_input(fffffd80532d4100,28,18) at nd6_ns_input+0xdd0 sys/netinet6/nd6_nbr.c:301
icmp6_input(ffff80001d675fe8,ffff80001d675ff4,3a,18) at icmp6_input+0xa25 sys/netinet6/icmp6.c:687
ip_deliver(ffff80001d675fe8,ffff80001d675ff4,3a,18) at ip_deliver+0x2e3 sys/netinet/ip_input.c:604
ip6_input_if(ffff80001d675fe8,ffff80001d675ff4,29,0,ffff800000679000) at ip6_input_if+0xee1
ipv6_input(ffff800000679000,fffffd80532d4f00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171
if_input_local(ffff800000679000,fffffd80532d4f00,18) at if_input_local+0x11d sys/net/if.c:771
loinput(ffff800000679000,fffffd80532d4f00) at loinput+0x4d sys/net/if_loop.c:238
if_input_process(ffff800000679000,ffff80001d676128) at if_input_process+0xd2 sys/net/if.c:830
ifiq_process(ffff8000006793f0) at ifiq_process+0x80 sys/net/ifq.c:768
taskq_thread(ffff80000002b080) at taskq_thread+0x8d sys/kern/kern_task.c:449
end trace frame: 0x0, count: -11
ddb> show registers
rdi 0
rsi 0
rbp 0xffff80001d675b70
rbx 0
rdx 0
rcx 0x7
rax 0xffff8000ffffe000
r8 0xc90f __ALIGN_SIZE+0xb90f
r9 0xffffffff81a27ffe nd6_ns_input+0x39e
r10 0x1
r11 0x8895d69caeaef91a
r12 0
r13 0x2
r14 0
r15 0xffff800000b9ab00
rip 0xffffffff81a2a7e8 nd6_dad_duplicated+0x28
cs 0x8
rflags 0x10246 __ALIGN_SIZE+0xf246
rsp 0xffff80001d675af0
ss 0x10
nd6_dad_duplicated+0x28: movq 0x10(%r14),%r13
ddb> show proc
PROC (softnet) pid=128355 stat=onproc
flags process=14000<NOZOMBIE,SYSTEM> proc=200<SYSTEM>
pri=32, usrpri=50, nice=20
forw=0xffffffffffffffff, list=0xffff8000ffffe278,0xffff8000ffffe500
process=0xffff8000ffffc000 user=0xffff80001d671000, vmspace=0xffffffff8281f6c8
estcpu=0, cpticks=1, pctcpu=0.0
user=0, sys=1, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
14986 117780 10581 0 2 0 syz-executor.0
14986 523675 10581 0 2 0x4000000 syz-executor.0
68769 173864 38268 0 2 0x2 syz-executor.1
10581 38172 38268 0 3 0x82 nanosleep syz-executor.0
83654 446375 0 0 3 0x14200 acct acct
8319 499750 0 0 3 0x14280 nfsidl nfsio
60853 137490 0 0 3 0x14280 nfsidl nfsio
61777 407011 0 0 3 0x14280 nfsidl nfsio
25535 281458 0 0 3 0x14280 nfsidl nfsio
36903 138716 0 0 3 0x14280 nfsidl nfsio
6012 343943 0 0 3 0x14280 nfsidl nfsio
19694 53535 0 0 3 0x14280 nfsidl nfsio
85470 127654 0 0 3 0x14280 nfsidl nfsio
34177 434971 0 0 3 0x14280 nfsidl nfsio
9639 204339 0 0 3 0x14280 nfsidl nfsio
83637 497649 0 0 3 0x14280 nfsidl nfsio
79300 132833 0 0 3 0x14280 nfsidl nfsio
63591 169994 0 0 3 0x14280 nfsidl nfsio
15045 216938 0 0 3 0x14280 nfsidl nfsio
60723 499388 0 0 3 0x14280 nfsidl nfsio
1537 353755 0 0 3 0x14280 nfsidl nfsio
22849 432583 0 0 3 0x14280 nfsidl nfsio
85124 292782 0 0 3 0x14280 nfsidl nfsio
98453 364073 0 0 3 0x14280 nfsidl nfsio
90631 142186 0 0 3 0x14280 nfsidl nfsio
14385 445216 0 0 3 0x14200 bored sosplice
38268 277977 83112 0 3 0x82 thrsleep syz-fuzzer
38268 203642 83112 0 3 0x4000082 nanosleep syz-fuzzer
38268 231024 83112 0 3 0x4000082 kqread syz-fuzzer
38268 284460 83112 0 3 0x4000082 thrsleep syz-fuzzer
38268 275143 83112 0 3 0x4000082 thrsleep syz-fuzzer
38268 225336 83112 0 3 0x4000082 thrsleep syz-fuzzer
38268 431598 83112 0 3 0x4000082 thrsleep syz-fuzzer
83112 58847 71395 0 3 0x10008a pause ksh
71395 175305 65063 0 3 0x92 select sshd
4485 82323 1 0 3 0x100083 ttyin getty
65063 503816 1 0 3 0x80 select sshd
85565 301865 81217 73 3 0x100090 kqread syslogd
81217 289187 1 0 3 0x100082 netio syslogd
87514 178522 0 0 3 0x14200 bored smr
38943 297085 0 0 2 0x14200 zerothread
45393 156260 0 0 3 0x14200 aiodoned aiodoned
26566 248638 0 0 3 0x14200 syncer update
10575 257950 0 0 3 0x14200 cleaner cleaner
8241 154720 0 0 3 0x14200 reaper reaper
27689 304528 0 0 3 0x14200 pgdaemon pagedaemon
54600 155630 0 0 3 0x14200 bored crynlk
76163 436755 0 0 3 0x14200 bored crypto
97068 386245 0 0 3 0x40014200 acpi0 acpi0
*88204 128355 0 0 7 0x14200 softnet
76023 138586 0 0 2 0x14200 systqmp
62476 432539 0 0 3 0x14200 bored systq
45610 494388 0 0 3 0x40014200 bored softclock
95901 297402 0 0 3 0x40014200 idle0
1 318854 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb> show all locks
No such command
ddb> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 9553 6322K 6956K 78643K 16495 0
pcb 13 8K 8K 78643K 777 0
rtable 178 33K 36K 78643K 3366 0
ifaddr 132 25K 26K 78643K 813 0
sysctl 2 0K 0K 78643K 2 0
counters 21 16K 17K 78643K 102 0
ioctlops 0 0K 4K 78643K 844 0
iov 0 0K 32K 78643K 447 0
mount 1 1K 1K 78643K 1 0
vnodes 1235 78K 78K 78643K 3357 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 5K 78643K 50 0
VM map 2 0K 0K 78643K 2 0
sem 12 0K 1K 78643K 834 0
dirhash 9 1K 2K 78643K 12 0
ACPI 1809 195K 288K 78643K 12938 0
file desc 5 13K 25K 78643K 5682 0
sigio 0 0K 0K 78643K 56 0
proc 46 30K 63K 78643K 1264 0
subproc 32 2K 3K 78643K 357 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 366 0
in_multi 29 2K 2K 78643K 644 0
ether_multi 1 0K 0K 78643K 106 0
mrt 0 0K 0K 78643K 16 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 85 387K 387K 78643K 85 0
exec 0 0K 2K 78643K 1052 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 166 139K 155K 78643K 15191 0
UVM aobj 132 8K 8K 78643K 199 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 534 0
NDP 21 0K 0K 78643K 155 0
temp 189 4013K 4080K 78643K 78366 0
kqueue 6 10K 22K 78643K 208 0
SYN cache 2 16K 16K 78643K 2 0
ddb> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
arp 64 47 0 43 1 0 1 1 0 8 0
rtpcb 88 1134 0 1134 20 19 1 1 0 8 1
rtentry 112 363 0 335 2 0 2 2 0 8 0
unpcb 120 11599 0 11589 2 1 1 2 0 8 0
syncache 272 30 0 30 14 14 0 1 0 8 0
tcpqe 32 82 0 82 2 2 0 1 0 8 0
tcpcb 592 1347 0 1335 22 20 2 3 0 8 1
ipq 40 22 0 22 9 9 0 1 0 8 0
ipqe 40 311 0 311 9 9 0 1 0 8 0
inpcb 296 7994 0 7979 19 17 2 2 0 8 0
rttmr 72 4 0 4 2 2 0 1 0 8 0
ip6q 72 1 0 1 1 1 0 1 0 8 0
ip6af 40 2 0 2 1 1 0 1 0 8 0
nd6 48 89 0 85 2 1 1 1 0 8 0
pkpcb 40 22 0 22 8 8 0 1 0 8 0
swfcl 56 2 0 0 1 0 1 1 0 8 0
ppxss 1136 11 0 11 8 8 0 1 0 8 0
pfstscr 40 18 0 17 1 0 1 1 0 8 0
pfosfp 40 4 0 0 1 0 1 1 0 8 0
pfosfpen 112 4 0 0 1 0 1 1 0 8 0
pfrke_plain 160 33 0 33 3 3 0 1 0 8 0
pfrktable 1344 675 0 633 12 8 4 4 0 8 0
pftag 88 63 0 50 3 2 1 1 0 8 0
pfstitem 24 10 0 8 1 0 1 1 0 8 0
pfstkey 112 26 0 24 1 0 1 1 0 8 0
pfstate 328 13 0 12 1 0 1 1 0 8 0
pfrule 1360 216 0 135 8 1 7 7 0 8 0
art_heap8 4096 6 0 5 6 5 1 4 0 8 0
art_heap4 256 1658 0 1478 30 16 14 14 0 8 2
art_table 32 1664 0 1483 2 0 2 2 0 8 0
art_node 16 354 0 328 1 0 1 1 0 8 0
sysvmsgpl 40 16 0 9 1 0 1 1 0 8 0
semupl 112 2 0 2 1 1 0 1 0 8 0
semapl 112 830 0 820 1 0 1 1 0 8 0
shmpl 112 196 0 68 5 1 4 4 0 8 0
dirhash 1024 17 0 10 3 1 2 3 0 8 0
dino2pl 256 8084 0 6691 88 0 88 88 0 8 0
ffsino 240 8084 0 6691 83 0 83 83 0 8 0
nchpl 144 15427 0 13845 60 0 60 60 0 8 0
rtmask 32 20 0 20 3 3 0 1 0 8 0
uvmvnodes 72 5964 0 0 109 0 109 109 0 8 0
vnodes 208 5964 0 0 314 0 314 314 0 8 0
namei 1024 46747 0 46746 8 7 1 1 0 8 0
vcpupl 1984 18 0 0 3 0 3 3 0 8 0
vmpool 528 39 0 21 2 0 2 2 0 8 0
pfiaddrpl 120 286 0 212 6 3 3 3 0 8 0
scsiplug 72 6 0 6 5 5 0 1 0 8 0
scxspl 200 57297 0 57297 2 1 1 1 0 8 1
plimitpl 152 268 0 262 1 0 1 1 0 8 0
sigapl 424 5834 0 5786 6 0 6 6 0 8 0
futexpl 56 99984 0 99984 8 7 1 1 0 8 1
knotepl 112 554 0 534 1 0 1 1 0 8 0
kqueuepl 152 507 0 499 1 0 1 1 0 8 0
pipepl 272 637 0 626 13 11 2 2 0 8 1
fdescpl 432 5797 0 5785 2 0 2 2 0 8 0
filepl 120 42188 0 42099 10 6 4 5 0 8 1
lockfpl 104 9673 0 9673 6 5 1 1 0 8 1
lockfspl 48 1273 0 1273 6 5 1 1 0 8 1
sessionpl 120 36 0 28 1 0 1 1 0 8 0
pgrppl 48 64 0 56 1 0 1 1 0 8 0
ucredpl 96 2870 0 2864 1 0 1 1 0 8 0
zombiepl 144 5786 0 5786 2 1 1 1 0 8 1
processpl 944 5834 0 5786 8 1 7 7 0 8 0
procpl 632 14045 0 13990 15 9 6 6 0 8 0
sosppl 144 51 0 51 17 17 0 1 0 8 0
sockpl 400 20756 0 20731 38 34 4 5 0 8 1
mcl64k 65536 1008 0 1008 119 103 16 65 0 8 16
mcl16k 16384 24 0 24 16 16 0 1 0 8 0
mcl12k 12288 138 0 138 27 27 0 1 0 8 0
mcl9k 9216 82 0 82 34 34 0 1 0 8 0
mcl8k 8192 150 0 150 23 23 0 1 0 8 0
mcl4k 4096 373 0 373 19 18 1 1 0 8 1
mcl2k2 2112 31 0 31 23 23 0 1 0 8 0
mcl2k 2048 98884 0 98842 19 13 6 14 0 8 0
mtagpl 96 556 0 544 9 8 1 5 0 8 0
mbufpl 256 190882 0 190643 130 114 16 38 0 8 0
bufpl 280 16966 0 10995 428 1 427 427 0 8 0
anonpl 16 582439 0 564227 212 126 86 99 0 107 2
amapchunkpl 152 30197 0 30009 133 111 22 22 0 158 13
amappl16 192 22284 0 21193 190 133 57 67 0 8 2
amappl15 184 620 0 615 1 0 1 1 0 8 0
amappl14 176 499 0 494 1 0 1 1 0 8 0
amappl13 168 2074 0 2073 1 0 1 1 0 8 0
amappl12 160 369 0 364 2 1 1 1 0 8 0
amappl11 152 1076 0 1072 1 0 1 1 0 8 0
amappl10 144 631 0 628 1 0 1 1 0 8 0
amappl9 136 838 0 837 1 0 1 1 0 8 0
amappl8 128 918 0 849 3 0 3 3 0 8 0
amappl7 120 1005 0 999 1 0 1 1 0 8 0
amappl6 112 1194 0 1176 1 0 1 1 0 8 0
amappl5 104 5116 0 5106 1 0 1 1 0 8 0
amappl4 96 3249 0 3219 1 0 1 1 0 8 0
amappl3 88 749 0 743 1 0 1 1 0 8 0
amappl2 80 40286 0 40222 2 0 2 2 0 8 0
amappl1 72 166599 0 166196 22 12 10 18 0 8 0
amappl 80 14568 0 14509 2 0 2 2 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 64 198 0 67 3 0 3 3 0 8 0
uaddrrnd 24 5836 0 5806 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 5836 0 5806 1 0 1 1 0 8 0
vmmpekpl 168 36359 0 36321 2 0 2 2 0 8 0
vmmpepl 168 736647 0 734421 479 370 109 146 0 357 3
vmsppl 272 5835 0 5806 4 1 3 3 0 8 1
pdppl 4096 11678 0 11630 10 3 7 7 0 8 0
pvpl 32 1600235 0 1579793 648 354 294 329 0 265 110
pmappl 200 5835 0 5806 3 1 2 2 0 8 0
extentpl 40 53 0 36 1 0 1 1 0 8 0
phpool 112 633 0 382 10 0 10 10 0 8 0
ddb> machine ddbcpu 0
No such command
ddb> trace
nd6_dad_duplicated(0) at nd6_dad_duplicated+0x28 sys/netinet6/nd6_nbr.c:1265
nd6_ns_input(fffffd80532d4100,28,18) at nd6_ns_input+0xdd0 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline]
nd6_ns_input(fffffd80532d4100,28,18) at nd6_ns_input+0xdd0 sys/netinet6/nd6_nbr.c:301
icmp6_input(ffff80001d675fe8,ffff80001d675ff4,3a,18) at icmp6_input+0xa25 sys/netinet6/icmp6.c:687
ip_deliver(ffff80001d675fe8,ffff80001d675ff4,3a,18) at ip_deliver+0x2e3 sys/netinet/ip_input.c:604
ip6_input_if(ffff80001d675fe8,ffff80001d675ff4,29,0,ffff800000679000) at ip6_input_if+0xee1
ipv6_input(ffff800000679000,fffffd80532d4f00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171
if_input_local(ffff800000679000,fffffd80532d4f00,18) at if_input_local+0x11d sys/net/if.c:771
loinput(ffff800000679000,fffffd80532d4f00) at loinput+0x4d sys/net/if_loop.c:238
if_input_process(ffff800000679000,ffff80001d676128) at if_input_process+0xd2 sys/net/if.c:830
ifiq_process(ffff8000006793f0) at ifiq_process+0x80 sys/net/ifq.c:768
taskq_thread(ffff80000002b080) at taskq_thread+0x8d sys/kern/kern_task.c:449
end trace frame: 0x0, count: -11
ddb> machine ddbcpu 1
No such command
ddb> trace
nd6_dad_duplicated(0) at nd6_dad_duplicated+0x28 sys/netinet6/nd6_nbr.c:1265
nd6_ns_input(fffffd80532d4100,28,18) at nd6_ns_input+0xdd0 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline]
nd6_ns_input(fffffd80532d4100,28,18) at nd6_ns_input+0xdd0 sys/netinet6/nd6_nbr.c:301
icmp6_input(ffff80001d675fe8,ffff80001d675ff4,3a,18) at icmp6_input+0xa25 sys/netinet6/icmp6.c:687
ip_deliver(ffff80001d675fe8,ffff80001d675ff4,3a,18) at ip_deliver+0x2e3 sys/netinet/ip_input.c:604
ip6_input_if(ffff80001d675fe8,ffff80001d675ff4,29,0,ffff800000679000) at ip6_input_if+0xee1
ipv6_input(ffff800000679000,fffffd80532d4f00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171
if_input_local(ffff800000679000,fffffd80532d4f00,18) at if_input_local+0x11d sys/net/if.c:771
loinput(ffff800000679000,fffffd80532d4f00) at loinput+0x4d sys/net/if_loop.c:238
if_input_process(ffff800000679000,ffff80001d676128) at if_input_process+0xd2 sys/net/if.c:830
ifiq_process(ffff8000006793f0) at ifiq_process+0x80 sys/net/ifq.c:768
taskq_thread(ffff80000002b080) at taskq_thread+0x8d sys/kern/kern_task.c:449
end trace frame: 0x0, count: -11
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot found the following issue on:
HEAD commit: 42858fb0 Do not hardcode the key length.
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=113e7134900000
kernel config: https://syzkaller.appspot.com/x/.config?x=fe55924c11e64b0a
dashboard link: https://syzkaller.appspot.com/bug?extid=0dca639bbac9d36577eb
Unfortunately, I don't have any reproducer for this issue yet.
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+0dca63...@syzkaller.appspotmail.com
uvm_fault(0xffffffff8281f6c8, 0x10, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at nd6_dad_duplicated+0x28: movq 0x10(%r14),%r13
ddb>
ddb> set $lines = 0
ddb> set $maxwidth = 0
ddb> show panic
kernel page fault
uvm_fault(0xffffffff8281f6c8, 0x10, 0, 1) -> e
nd6_dad_duplicated(0) at nd6_dad_duplicated+0x28 sys/netinet6/nd6_nbr.c:1265
end trace frame: 0xffff80001d675ce0, count: 0
ddb> trace
nd6_dad_duplicated(0) at nd6_dad_duplicated+0x28 sys/netinet6/nd6_nbr.c:1265
nd6_ns_input(fffffd80532d4100,28,18) at nd6_ns_input+0xdd0 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline]
nd6_ns_input(fffffd80532d4100,28,18) at nd6_ns_input+0xdd0 sys/netinet6/nd6_nbr.c:301
icmp6_input(ffff80001d675fe8,ffff80001d675ff4,3a,18) at icmp6_input+0xa25 sys/netinet6/icmp6.c:687
ip_deliver(ffff80001d675fe8,ffff80001d675ff4,3a,18) at ip_deliver+0x2e3 sys/netinet/ip_input.c:604
ip6_input_if(ffff80001d675fe8,ffff80001d675ff4,29,0,ffff800000679000) at ip6_input_if+0xee1
ipv6_input(ffff800000679000,fffffd80532d4f00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171
if_input_local(ffff800000679000,fffffd80532d4f00,18) at if_input_local+0x11d sys/net/if.c:771
loinput(ffff800000679000,fffffd80532d4f00) at loinput+0x4d sys/net/if_loop.c:238
if_input_process(ffff800000679000,ffff80001d676128) at if_input_process+0xd2 sys/net/if.c:830
ifiq_process(ffff8000006793f0) at ifiq_process+0x80 sys/net/ifq.c:768
taskq_thread(ffff80000002b080) at taskq_thread+0x8d sys/kern/kern_task.c:449
end trace frame: 0x0, count: -11
ddb> show registers
rdi 0
rsi 0
rbp 0xffff80001d675b70
rbx 0
rdx 0
rcx 0x7
rax 0xffff8000ffffe000
r8 0xc90f __ALIGN_SIZE+0xb90f
r9 0xffffffff81a27ffe nd6_ns_input+0x39e
r10 0x1
r11 0x8895d69caeaef91a
r12 0
r13 0x2
r14 0
r15 0xffff800000b9ab00
rip 0xffffffff81a2a7e8 nd6_dad_duplicated+0x28
cs 0x8
rflags 0x10246 __ALIGN_SIZE+0xf246
rsp 0xffff80001d675af0
ss 0x10
nd6_dad_duplicated+0x28: movq 0x10(%r14),%r13
ddb> show proc
PROC (softnet) pid=128355 stat=onproc
flags process=14000<NOZOMBIE,SYSTEM> proc=200<SYSTEM>
pri=32, usrpri=50, nice=20
forw=0xffffffffffffffff, list=0xffff8000ffffe278,0xffff8000ffffe500
process=0xffff8000ffffc000 user=0xffff80001d671000, vmspace=0xffffffff8281f6c8
estcpu=0, cpticks=1, pctcpu=0.0
user=0, sys=1, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
14986 117780 10581 0 2 0 syz-executor.0
14986 523675 10581 0 2 0x4000000 syz-executor.0
68769 173864 38268 0 2 0x2 syz-executor.1
10581 38172 38268 0 3 0x82 nanosleep syz-executor.0
83654 446375 0 0 3 0x14200 acct acct
8319 499750 0 0 3 0x14280 nfsidl nfsio
60853 137490 0 0 3 0x14280 nfsidl nfsio
61777 407011 0 0 3 0x14280 nfsidl nfsio
25535 281458 0 0 3 0x14280 nfsidl nfsio
36903 138716 0 0 3 0x14280 nfsidl nfsio
6012 343943 0 0 3 0x14280 nfsidl nfsio
19694 53535 0 0 3 0x14280 nfsidl nfsio
85470 127654 0 0 3 0x14280 nfsidl nfsio
34177 434971 0 0 3 0x14280 nfsidl nfsio
9639 204339 0 0 3 0x14280 nfsidl nfsio
83637 497649 0 0 3 0x14280 nfsidl nfsio
79300 132833 0 0 3 0x14280 nfsidl nfsio
63591 169994 0 0 3 0x14280 nfsidl nfsio
15045 216938 0 0 3 0x14280 nfsidl nfsio
60723 499388 0 0 3 0x14280 nfsidl nfsio
1537 353755 0 0 3 0x14280 nfsidl nfsio
22849 432583 0 0 3 0x14280 nfsidl nfsio
85124 292782 0 0 3 0x14280 nfsidl nfsio
98453 364073 0 0 3 0x14280 nfsidl nfsio
90631 142186 0 0 3 0x14280 nfsidl nfsio
14385 445216 0 0 3 0x14200 bored sosplice
38268 277977 83112 0 3 0x82 thrsleep syz-fuzzer
38268 203642 83112 0 3 0x4000082 nanosleep syz-fuzzer
38268 231024 83112 0 3 0x4000082 kqread syz-fuzzer
38268 284460 83112 0 3 0x4000082 thrsleep syz-fuzzer
38268 275143 83112 0 3 0x4000082 thrsleep syz-fuzzer
38268 225336 83112 0 3 0x4000082 thrsleep syz-fuzzer
38268 431598 83112 0 3 0x4000082 thrsleep syz-fuzzer
83112 58847 71395 0 3 0x10008a pause ksh
71395 175305 65063 0 3 0x92 select sshd
4485 82323 1 0 3 0x100083 ttyin getty
65063 503816 1 0 3 0x80 select sshd
85565 301865 81217 73 3 0x100090 kqread syslogd
81217 289187 1 0 3 0x100082 netio syslogd
87514 178522 0 0 3 0x14200 bored smr
38943 297085 0 0 2 0x14200 zerothread
45393 156260 0 0 3 0x14200 aiodoned aiodoned
26566 248638 0 0 3 0x14200 syncer update
10575 257950 0 0 3 0x14200 cleaner cleaner
8241 154720 0 0 3 0x14200 reaper reaper
27689 304528 0 0 3 0x14200 pgdaemon pagedaemon
54600 155630 0 0 3 0x14200 bored crynlk
76163 436755 0 0 3 0x14200 bored crypto
97068 386245 0 0 3 0x40014200 acpi0 acpi0
*88204 128355 0 0 7 0x14200 softnet
76023 138586 0 0 2 0x14200 systqmp
62476 432539 0 0 3 0x14200 bored systq
45610 494388 0 0 3 0x40014200 bored softclock
95901 297402 0 0 3 0x40014200 idle0
1 318854 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb> show all locks
No such command
ddb> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 9553 6322K 6956K 78643K 16495 0
pcb 13 8K 8K 78643K 777 0
rtable 178 33K 36K 78643K 3366 0
ifaddr 132 25K 26K 78643K 813 0
sysctl 2 0K 0K 78643K 2 0
counters 21 16K 17K 78643K 102 0
ioctlops 0 0K 4K 78643K 844 0
iov 0 0K 32K 78643K 447 0
mount 1 1K 1K 78643K 1 0
vnodes 1235 78K 78K 78643K 3357 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 5K 78643K 50 0
VM map 2 0K 0K 78643K 2 0
sem 12 0K 1K 78643K 834 0
dirhash 9 1K 2K 78643K 12 0
ACPI 1809 195K 288K 78643K 12938 0
file desc 5 13K 25K 78643K 5682 0
sigio 0 0K 0K 78643K 56 0
proc 46 30K 63K 78643K 1264 0
subproc 32 2K 3K 78643K 357 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 366 0
in_multi 29 2K 2K 78643K 644 0
ether_multi 1 0K 0K 78643K 106 0
mrt 0 0K 0K 78643K 16 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 85 387K 387K 78643K 85 0
exec 0 0K 2K 78643K 1052 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 166 139K 155K 78643K 15191 0
UVM aobj 132 8K 8K 78643K 199 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 534 0
NDP 21 0K 0K 78643K 155 0
temp 189 4013K 4080K 78643K 78366 0
kqueue 6 10K 22K 78643K 208 0
SYN cache 2 16K 16K 78643K 2 0
ddb> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
arp 64 47 0 43 1 0 1 1 0 8 0
rtpcb 88 1134 0 1134 20 19 1 1 0 8 1
rtentry 112 363 0 335 2 0 2 2 0 8 0
unpcb 120 11599 0 11589 2 1 1 2 0 8 0
syncache 272 30 0 30 14 14 0 1 0 8 0
tcpqe 32 82 0 82 2 2 0 1 0 8 0
tcpcb 592 1347 0 1335 22 20 2 3 0 8 1
ipq 40 22 0 22 9 9 0 1 0 8 0
ipqe 40 311 0 311 9 9 0 1 0 8 0
inpcb 296 7994 0 7979 19 17 2 2 0 8 0
rttmr 72 4 0 4 2 2 0 1 0 8 0
ip6q 72 1 0 1 1 1 0 1 0 8 0
ip6af 40 2 0 2 1 1 0 1 0 8 0
nd6 48 89 0 85 2 1 1 1 0 8 0
pkpcb 40 22 0 22 8 8 0 1 0 8 0
swfcl 56 2 0 0 1 0 1 1 0 8 0
ppxss 1136 11 0 11 8 8 0 1 0 8 0
pfstscr 40 18 0 17 1 0 1 1 0 8 0
pfosfp 40 4 0 0 1 0 1 1 0 8 0
pfosfpen 112 4 0 0 1 0 1 1 0 8 0
pfrke_plain 160 33 0 33 3 3 0 1 0 8 0
pfrktable 1344 675 0 633 12 8 4 4 0 8 0
pftag 88 63 0 50 3 2 1 1 0 8 0
pfstitem 24 10 0 8 1 0 1 1 0 8 0
pfstkey 112 26 0 24 1 0 1 1 0 8 0
pfstate 328 13 0 12 1 0 1 1 0 8 0
pfrule 1360 216 0 135 8 1 7 7 0 8 0
art_heap8 4096 6 0 5 6 5 1 4 0 8 0
art_heap4 256 1658 0 1478 30 16 14 14 0 8 2
art_table 32 1664 0 1483 2 0 2 2 0 8 0
art_node 16 354 0 328 1 0 1 1 0 8 0
sysvmsgpl 40 16 0 9 1 0 1 1 0 8 0
semupl 112 2 0 2 1 1 0 1 0 8 0
semapl 112 830 0 820 1 0 1 1 0 8 0
shmpl 112 196 0 68 5 1 4 4 0 8 0
dirhash 1024 17 0 10 3 1 2 3 0 8 0
dino2pl 256 8084 0 6691 88 0 88 88 0 8 0
ffsino 240 8084 0 6691 83 0 83 83 0 8 0
nchpl 144 15427 0 13845 60 0 60 60 0 8 0
rtmask 32 20 0 20 3 3 0 1 0 8 0
uvmvnodes 72 5964 0 0 109 0 109 109 0 8 0
vnodes 208 5964 0 0 314 0 314 314 0 8 0
namei 1024 46747 0 46746 8 7 1 1 0 8 0
vcpupl 1984 18 0 0 3 0 3 3 0 8 0
vmpool 528 39 0 21 2 0 2 2 0 8 0
pfiaddrpl 120 286 0 212 6 3 3 3 0 8 0
scsiplug 72 6 0 6 5 5 0 1 0 8 0
scxspl 200 57297 0 57297 2 1 1 1 0 8 1
plimitpl 152 268 0 262 1 0 1 1 0 8 0
sigapl 424 5834 0 5786 6 0 6 6 0 8 0
futexpl 56 99984 0 99984 8 7 1 1 0 8 1
knotepl 112 554 0 534 1 0 1 1 0 8 0
kqueuepl 152 507 0 499 1 0 1 1 0 8 0
pipepl 272 637 0 626 13 11 2 2 0 8 1
fdescpl 432 5797 0 5785 2 0 2 2 0 8 0
filepl 120 42188 0 42099 10 6 4 5 0 8 1
lockfpl 104 9673 0 9673 6 5 1 1 0 8 1
lockfspl 48 1273 0 1273 6 5 1 1 0 8 1
sessionpl 120 36 0 28 1 0 1 1 0 8 0
pgrppl 48 64 0 56 1 0 1 1 0 8 0
ucredpl 96 2870 0 2864 1 0 1 1 0 8 0
zombiepl 144 5786 0 5786 2 1 1 1 0 8 1
processpl 944 5834 0 5786 8 1 7 7 0 8 0
procpl 632 14045 0 13990 15 9 6 6 0 8 0
sosppl 144 51 0 51 17 17 0 1 0 8 0
sockpl 400 20756 0 20731 38 34 4 5 0 8 1
mcl64k 65536 1008 0 1008 119 103 16 65 0 8 16
mcl16k 16384 24 0 24 16 16 0 1 0 8 0
mcl12k 12288 138 0 138 27 27 0 1 0 8 0
mcl9k 9216 82 0 82 34 34 0 1 0 8 0
mcl8k 8192 150 0 150 23 23 0 1 0 8 0
mcl4k 4096 373 0 373 19 18 1 1 0 8 1
mcl2k2 2112 31 0 31 23 23 0 1 0 8 0
mcl2k 2048 98884 0 98842 19 13 6 14 0 8 0
mtagpl 96 556 0 544 9 8 1 5 0 8 0
mbufpl 256 190882 0 190643 130 114 16 38 0 8 0
bufpl 280 16966 0 10995 428 1 427 427 0 8 0
anonpl 16 582439 0 564227 212 126 86 99 0 107 2
amapchunkpl 152 30197 0 30009 133 111 22 22 0 158 13
amappl16 192 22284 0 21193 190 133 57 67 0 8 2
amappl15 184 620 0 615 1 0 1 1 0 8 0
amappl14 176 499 0 494 1 0 1 1 0 8 0
amappl13 168 2074 0 2073 1 0 1 1 0 8 0
amappl12 160 369 0 364 2 1 1 1 0 8 0
amappl11 152 1076 0 1072 1 0 1 1 0 8 0
amappl10 144 631 0 628 1 0 1 1 0 8 0
amappl9 136 838 0 837 1 0 1 1 0 8 0
amappl8 128 918 0 849 3 0 3 3 0 8 0
amappl7 120 1005 0 999 1 0 1 1 0 8 0
amappl6 112 1194 0 1176 1 0 1 1 0 8 0
amappl5 104 5116 0 5106 1 0 1 1 0 8 0
amappl4 96 3249 0 3219 1 0 1 1 0 8 0
amappl3 88 749 0 743 1 0 1 1 0 8 0
amappl2 80 40286 0 40222 2 0 2 2 0 8 0
amappl1 72 166599 0 166196 22 12 10 18 0 8 0
amappl 80 14568 0 14509 2 0 2 2 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 64 198 0 67 3 0 3 3 0 8 0
uaddrrnd 24 5836 0 5806 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 5836 0 5806 1 0 1 1 0 8 0
vmmpekpl 168 36359 0 36321 2 0 2 2 0 8 0
vmmpepl 168 736647 0 734421 479 370 109 146 0 357 3
vmsppl 272 5835 0 5806 4 1 3 3 0 8 1
pdppl 4096 11678 0 11630 10 3 7 7 0 8 0
pvpl 32 1600235 0 1579793 648 354 294 329 0 265 110
pmappl 200 5835 0 5806 3 1 2 2 0 8 0
extentpl 40 53 0 36 1 0 1 1 0 8 0
phpool 112 633 0 382 10 0 10 10 0 8 0
ddb> machine ddbcpu 0
No such command
ddb> trace
nd6_dad_duplicated(0) at nd6_dad_duplicated+0x28 sys/netinet6/nd6_nbr.c:1265
nd6_ns_input(fffffd80532d4100,28,18) at nd6_ns_input+0xdd0 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline]
nd6_ns_input(fffffd80532d4100,28,18) at nd6_ns_input+0xdd0 sys/netinet6/nd6_nbr.c:301
icmp6_input(ffff80001d675fe8,ffff80001d675ff4,3a,18) at icmp6_input+0xa25 sys/netinet6/icmp6.c:687
ip_deliver(ffff80001d675fe8,ffff80001d675ff4,3a,18) at ip_deliver+0x2e3 sys/netinet/ip_input.c:604
ip6_input_if(ffff80001d675fe8,ffff80001d675ff4,29,0,ffff800000679000) at ip6_input_if+0xee1
ipv6_input(ffff800000679000,fffffd80532d4f00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171
if_input_local(ffff800000679000,fffffd80532d4f00,18) at if_input_local+0x11d sys/net/if.c:771
loinput(ffff800000679000,fffffd80532d4f00) at loinput+0x4d sys/net/if_loop.c:238
if_input_process(ffff800000679000,ffff80001d676128) at if_input_process+0xd2 sys/net/if.c:830
ifiq_process(ffff8000006793f0) at ifiq_process+0x80 sys/net/ifq.c:768
taskq_thread(ffff80000002b080) at taskq_thread+0x8d sys/kern/kern_task.c:449
end trace frame: 0x0, count: -11
ddb> machine ddbcpu 1
No such command
ddb> trace
nd6_dad_duplicated(0) at nd6_dad_duplicated+0x28 sys/netinet6/nd6_nbr.c:1265
nd6_ns_input(fffffd80532d4100,28,18) at nd6_ns_input+0xdd0 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline]
nd6_ns_input(fffffd80532d4100,28,18) at nd6_ns_input+0xdd0 sys/netinet6/nd6_nbr.c:301
icmp6_input(ffff80001d675fe8,ffff80001d675ff4,3a,18) at icmp6_input+0xa25 sys/netinet6/icmp6.c:687
ip_deliver(ffff80001d675fe8,ffff80001d675ff4,3a,18) at ip_deliver+0x2e3 sys/netinet/ip_input.c:604
ip6_input_if(ffff80001d675fe8,ffff80001d675ff4,29,0,ffff800000679000) at ip6_input_if+0xee1
ipv6_input(ffff800000679000,fffffd80532d4f00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171
if_input_local(ffff800000679000,fffffd80532d4f00,18) at if_input_local+0x11d sys/net/if.c:771
loinput(ffff800000679000,fffffd80532d4f00) at loinput+0x4d sys/net/if_loop.c:238
if_input_process(ffff800000679000,ffff80001d676128) at if_input_process+0xd2 sys/net/if.c:830
ifiq_process(ffff8000006793f0) at ifiq_process+0x80 sys/net/ifq.c:768
taskq_thread(ffff80000002b080) at taskq_thread+0x8d sys/kern/kern_task.c:449
end trace frame: 0x0, count: -11
---
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syzbot
Nov 5, 2020, 8:33:11 PM11/5/20
to syzkaller-o...@googlegroups.com
Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.
Crashes did not happen for a while, no reproducer and no activity.
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