login: uvm_fault(0xfffffd806e8f4878, 0x110, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at mrt6_ioctl+0xa2: movl 0x110(%r12),%r15d
ddb{1}>
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
kernel page fault
uvm_fault(0xfffffd806e8f4878, 0x110, 0, 1) -> e
mrt6_ioctl(fffffd806ea94c08,c028756b,ffff800020ba7c10) at mrt6_ioctl+0xa2 get_mif6_cnt sys/netinet6/ip6_mroute.c:306 [inline]
mrt6_ioctl(fffffd806ea94c08,c028756b,ffff800020ba7c10) at mrt6_ioctl+0xa2 sys/netinet6/ip6_mroute.c:256
end trace frame: 0xffff800020ba7d10, count: 0
ddb{1}> trace
mrt6_ioctl(fffffd806ea94c08,c028756b,ffff800020ba7c10) at mrt6_ioctl+0xa2 get_mif6_cnt sys/netinet6/ip6_mroute.c:306 [inline]
mrt6_ioctl(fffffd806ea94c08,c028756b,ffff800020ba7c10) at mrt6_ioctl+0xa2 sys/netinet6/ip6_mroute.c:256
sys_ioctl(ffff800020b85078,ffff800020ba7d38,ffff800020ba7da0) at sys_ioctl+0x5b8
syscall(ffff800020ba7e10) at syscall+0x552 mi_syscall sys/sys/syscall_mi.h:99 [inline]
syscall(ffff800020ba7e10) at syscall+0x552 sys/arch/amd64/amd64/trap.c:574
Xsyscall(6,0,e7d3efec000,0,7f7ffffd3da8,7f7ffffd3d98) at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffd3d20, count: -4
ddb{1}> show registers
rdi 0
rsi 0
rbp 0xffff800020ba7c00
rbx 0xffff80000066e000
rdx 0x1
rcx 0
rax 0xd
r8 0xffffffff81937b14 mrt6_ioctl+0x44
r9 0x7
r10 0xb6bdb82d09df9263
r11 0x987b58a3e6efcc74
r12 0
r13 0x28
r14 0xffff800020ba7c10
r15 0xc028756b
rip 0xffffffff81937b72 mrt6_ioctl+0xa2
cs 0x8
rflags 0x10286 __ALIGN_SIZE+0xf286
rsp 0xffff800020ba7ba0
ss 0x10
mrt6_ioctl+0xa2: movl 0x110(%r12),%r15d
ddb{1}> show proc
PROC (syz-executor1923) pid=212281 stat=onproc
flags process=2<EXEC> proc=0
pri=50, usrpri=50, nice=20
forw=0xffffffffffffffff, list=0xffff800020b844c0,0xffffffff82374f30
process=0xffff800020b8c6a8 user=0xffff800020ba2000, vmspace=0xfffffd806e8f4878
estcpu=0, cpticks=1, pctcpu=0.0
user=0, sys=1, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
*30704 212281 25216 0 7 0x2 syz-executor1923
25216 305106 96822 0 3 0x10008a pause ksh
96822 292373 8286 0 7 0x12 sshd
30785 122503 1 0 3 0x100083 ttyin getty
8286 176758 1 0 3 0x80 select sshd
78994 424446 41711 73 2 0x100090 syslogd
41711 351014 1 0 3 0x100082 netio syslogd
82009 75731 1 77 3 0x100090 poll dhclient
78613 307554 1 0 3 0x80 poll dhclient
14202 69877 0 0 3 0x14200 pgzero zerothread
76992 231748 0 0 3 0x14200 aiodoned aiodoned
44397 497103 0 0 3 0x14200 syncer update
14132 277969 0 0 3 0x14200 cleaner cleaner
60655 455377 0 0 3 0x14200 reaper reaper
43393 408102 0 0 3 0x14200 pgdaemon pagedaemon
21821 251113 0 0 3 0x14200 bored crynlk
46736 405267 0 0 3 0x14200 bored crypto
49510 269869 0 0 3 0x40014200 acpi0 acpi0
89516 469978 0 0 3 0x40014200 idle1
45768 411813 0 0 3 0x14200 bored softnet
85451 116372 0 0 3 0x14200 bored systqmp
40672 155684 0 0 3 0x14200 bored systq
35261 269846 0 0 3 0x40014200 bored softclock
52315 211888 0 0 3 0x40014200 idle0
58127 45024 0 0 3 0x14200 bored smr
1 163065 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
Process 30704 (syz-executor1923) thread 0xffff800020b85078 (212281)
shared rwlock netlock r = 0 (0xffffffff821d55b8)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1161
#1 mrt6_ioctl+0x91 mrt6_iflookupbymif sys/netinet6/ip6_mroute.c:1182 [inline]
#1 mrt6_ioctl+0x91 get_mif6_cnt sys/netinet6/ip6_mroute.c:306 [inline]
#1 mrt6_ioctl+0x91 sys/netinet6/ip6_mroute.c:256
#2 sys_ioctl+0x5b8
#3 syscall+0x552 mi_syscall sys/sys/syscall_mi.h:99 [inline]
#3 syscall+0x552 sys/arch/amd64/amd64/trap.c:574
#4 Xsyscall+0x128
exclusive kernel_lock &kernel_lock r = 1 (0xffffffff82373c68)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1161
#1 syscall+0x43a mi_syscall sys/sys/syscall_mi.h:91 [inline]
#1 syscall+0x43a sys/arch/amd64/amd64/trap.c:574
#2 Xsyscall+0x128
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim
devbuf 9442 6315K 6316K 78643K 10529 0 0
pcb 23 9K 9K 78643K 55 0 0
rtable 61 2K 2K 78643K 115 0 0
ifaddr 21 7K 7K 78643K 21 0 0
counters 39 33K 33K 78643K 39 0 0
ioctlops 0 0K 2K 78643K 13 0 0
mount 1 1K 1K 78643K 1 0 0
vnodes 1174 74K 74K 78643K 1179 0 0
UFS quota 1 32K 32K 78643K 1 0 0
UFS mount 5 36K 36K 78643K 5 0 0
shm 2 1K 1K 78643K 2 0 0
VM map 2 1K 1K 78643K 2 0 0
sem 2 0K 0K 78643K 2 0 0
dirhash 12 2K 2K 78643K 12 0 0
ACPI 1808 196K 290K 78643K 12628 0 0
file desc 1 0K 0K 78643K 1 0 0
proc 40 38K 46K 78643K 207 0 0
NFS srvsock 1 0K 0K 78643K 1 0 0
NFS daemon 1 16K 16K 78643K 1 0 0
in_multi 11 0K 0K 78643K 11 0 0
ether_multi 1 0K 0K 78643K 1 0 0
ISOFS mount 1 32K 32K 78643K 1 0 0
MSDOSFS mount 1 16K 16K 78643K 1 0 0
ttys 18 79K 79K 78643K 18 0 0
exec 0 0K 1K 78643K 152 0 0
pagedep 1 8K 8K 78643K 1 0 0
inodedep 1 32K 32K 78643K 1 0 0
newblk 1 0K 0K 78643K 1 0 0
VM swap 7 26K 26K 78643K 7 0 0
UVM amap 52 2K 3K 78643K 704 0 0
UVM aobj 2 2K 2K 78643K 2 0 0
memdesc 1 4K 4K 78643K 1 0 0
crypto data 1 1K 1K 78643K 1 0 0
NDP 3 0K 0K 78643K 3 0 0
temp 30 2711K 2775K 78643K 1720 0 0
SYN cache 2 16K 16K 78643K 2 0 0
ddb{1}> 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
inpcbpl 280 23 0 17 1 0 1 1 0 8 0
plimitpl 152 13 0 8 1 0 1 1 0 8 0
plcache 128 20 0 0 1 0 1 1 0 8 0
rtentry 112 23 0 1 1 0 1 1 0 8 0
syncache 264 5 0 5 2 1 1 1 0 8 1
tcpcb 544 9 0 5 1 0 1 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 97 0 0 7 0 7 7 0 8 0
art_table 32 98 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 1385 0 16 45 0 45 45 0 8 0
ffsino 272 1385 0 16 92 0 92 92 0 8 0
nchpl 144 1558 0 30 57 0 57 57 0 8 0
uvmvnodes 72 1394 0 0 26 0 26 26 0 8 0
vnodes 200 1394 0 0 74 0 74 74 0 8 0
namei 1024 3280 0 3280 3 2 1 1 0 8 1
percpumem 16 30 0 0 1 0 1 1 0 8 0
scxspl 192 2396 0 2396 10 9 1 6 0 8 1
sigapl 432 176 0 166 2 0 2 2 0 8 0
knotepl 112 5 0 0 1 0 1 1 0 8 0
kqueuepl 104 1 0 0 1 0 1 1 0 8 0
pipepl 112 118 0 111 3 2 1 1 0 8 0
fdescpl 488 177 0 166 2 0 2 2 0 8 0
filepl 152 817 0 774 2 0 2 2 0 8 0
lockfpl 104 6 0 6 1 1 0 1 0 8 0
lockfspl 48 3 0 3 1 1 0 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 3 2 1 1 0 8 1
processpl 840 192 0 166 4 0 4 4 0 8 0
procpl 600 192 0 166 3 0 3 3 0 8 0
sockpl 384 65 0 48 2 0 2 2 0 8 0
mcl4k 4096 5 0 0 1 0 1 1 0 8 0
mcl2k 2048 84 0 0 11 0 11 11 0 8 0
mtagpl 80 1 0 0 1 0 1 1 0 8 0
mbufpl 256 130 0 0 8 1 7 7 0 8 0
bufpl 256 2055 0 258 113 0 113 113 0 8 0
anonpl 16 17439 0 16327 7 2 5 6 0 125 0
amapchunkpl 152 493 0 458 2 0 2 2 0 158 0
amappl16 192 71 0 65 1 0 1 1 0 8 0
amappl14 176 14 0 13 3 2 1 1 0 8 0
amappl12 160 10 0 10 1 1 0 1 0 8 0
amappl11 152 39 0 25 1 0 1 1 0 8 0
amappl10 144 46 0 46 3 2 1 1 0 8 1
amappl9 136 385 0 383 1 0 1 1 0 8 0
amappl8 128 85 0 81 1 0 1 1 0 8 0
amappl7 120 14 0 13 1 0 1 1 0 8 0
amappl6 112 41 0 37 1 0 1 1 0 8 0
amappl5 104 114 0 102 1 0 1 1 0 8 0
amappl4 96 324 0 306 1 0 1 1 0 8 0
amappl3 88 155 0 145 1 0 1 1 0 8 0
amappl2 80 728 0 680 4 2 2 2 0 8 1
amappl1 72 11678 0 11302 14 5 9 14 0 8 0
amappl 80 370 0 351 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
dma64 64 259 0 259 1 1 0 1 0 8 0
dma32 32 7 0 7 1 1 0 1 0 8 0
dma16 16 17 0 17 1 1 0 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 5271 0 5252 1 0 1 1 0 8 0
vmmpepl 168 24940 0 24222 56 21 35 43 0 357 3
vmsppl 360 176 0 166 2 0 2 2 0 8 0
pdppl 4096 362 0 332 5 0 5 5 0 8 0
pvpl 32 71404 0 68656 38 11 27 27 0 265 4
pmappl 232 176 0 166 1 0 1 1 0 8 0
extentpl 40 41 0 26 1 0 1 1 0 8 0
phpool 112 247 0 5 7 0 7 7 0 8 0