panic: attempt to execute user address 0x0 in supervipasnoirc: mokdeern
e
lStopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*456615 69609 0 0 0x4000000 0 syz-executor.1
18840 29870 0 0 0x4000000 1 syz-executor.0
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic() at panic+0x15c sys/kern/subr_prf.c:207
pageflttrap() at pageflttrap+0x40b
kerntrap(ffff800023ba6ae0) at kerntrap+0xec sys/arch/amd64/amd64/trap.c:287
alltraps_kern_meltdown(6,ffff800022d96000,fffffd80667c2158,10,ffff8000000253f0,ffff800023ba6d48) at alltraps_kern_meltdown+0x7b
0(b,ffff800023ba6ca8,83,ffff800023ba6d48,0,b) at 0
rt_clone(ffff800023ba6db8,fffffd806f6ca198,0) at rt_clone+0x78 sys/net/route.c:266
rtalloc_mpath(fffffd806f6ca198,fffffd8067e6a5f0,0) at rtalloc_mpath+0xba rt_match sys/net/route.c:244 [inline]
rtalloc_mpath(fffffd806f6ca198,fffffd8067e6a5f0,0) at rtalloc_mpath+0xba sys/net/route.c:359
ip_output(fffffd8067e6a500,0,fffffd806f6ca188,20,0,fffffd806f6ca118) at ip_output+0x4f2 sys/netinet/ip_output.c:204
rip_output(fffffd8067e6a500,fffffd8066942008,ffff800023ba6fc8,ffff800022d96000) at rip_output+0x252 sys/netinet/raw_ip.c:289
rip_usrreq(fffffd8066942008,9,fffffd8067e6a500,0,0,ffff800020ab0ee8) at rip_usrreq+0x46a sys/netinet/raw_ip.c:538
sosend(fffffd8066942008,0,ffff800023ba7130,0,0,0) at sosend+0x645 sys/kern/uipc_socket.c:524
sendit(ffff800020ab0ee8,5,ffff800023ba7210,0,ffff800023ba72f0) at sendit+0x52b sys/kern/uipc_syscalls.c:662
sys_sendto(ffff800020ab0ee8,ffff800023ba72a8,ffff800023ba72f0) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:527
end trace frame: 0xffff800023ba7360, count: 0
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
attempt to execute user address 0x0 in supervisor mode
ddb{0}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic() at panic+0x15c sys/kern/subr_prf.c:207
pageflttrap() at pageflttrap+0x40b
kerntrap(ffff800023ba6ae0) at kerntrap+0xec sys/arch/amd64/amd64/trap.c:287
alltraps_kern_meltdown(6,ffff800022d96000,fffffd80667c2158,10,ffff8000000253f0,ffff800023ba6d48) at alltraps_kern_meltdown+0x7b
0(b,ffff800023ba6ca8,83,ffff800023ba6d48,0,b) at 0
rt_clone(ffff800023ba6db8,fffffd806f6ca198,0) at rt_clone+0x78 sys/net/route.c:266
rtalloc_mpath(fffffd806f6ca198,fffffd8067e6a5f0,0) at rtalloc_mpath+0xba rt_match sys/net/route.c:244 [inline]
rtalloc_mpath(fffffd806f6ca198,fffffd8067e6a5f0,0) at rtalloc_mpath+0xba sys/net/route.c:359
ip_output(fffffd8067e6a500,0,fffffd806f6ca188,20,0,fffffd806f6ca118) at ip_output+0x4f2 sys/netinet/ip_output.c:204
rip_output(fffffd8067e6a500,fffffd8066942008,ffff800023ba6fc8,ffff800022d96000) at rip_output+0x252 sys/netinet/raw_ip.c:289
rip_usrreq(fffffd8066942008,9,fffffd8067e6a500,0,0,ffff800020ab0ee8) at rip_usrreq+0x46a sys/netinet/raw_ip.c:538
sosend(fffffd8066942008,0,ffff800023ba7130,0,0,0) at sosend+0x645 sys/kern/uipc_socket.c:524
sendit(ffff800020ab0ee8,5,ffff800023ba7210,0,ffff800023ba72f0) at sendit+0x52b sys/kern/uipc_syscalls.c:662
sys_sendto(ffff800020ab0ee8,ffff800023ba72a8,ffff800023ba72f0) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:527
syscall(ffff800023ba7370) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline]
syscall(ffff800023ba7370) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
Xsyscall(6,0,ffffffffffffffd7,0,6,cbed73d1010) at Xsyscall+0x128
end of kernel
end trace frame: 0xcc13610e4f0, count: -16
ddb{0}> show registers
rdi 0xffffffff812d2ac7 db_enter+0x17
rsi 0x206f __ALIGN_SIZE+0x106f
rbp 0xffff800023ba6950
rbx 0xffff800023ba6a00
rdx 0x2070 __ALIGN_SIZE+0x1070
rcx 0xffff800022d96000
rax 0xffff800022d96000
r8 0xffffffff81c6670f kprintf+0x16f
r9 0x1
r10 0x25
r11 0x5038aaa8f12e11e7
r12 0x3000000008
r13 0xffff800023ba6960
r14 0x100
r15 0x1
rip 0xffffffff812d2ac8 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff800023ba6940
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb{0}> show proc
PROC (syz-executor.1) pid=456615 stat=onproc
flags process=0 proc=4000000<THREAD>
pri=86, usrpri=86, nice=20
forw=0xffffffffffffffff, list=0xffff800020ab18c8,0xffffffff8264fc48
process=0xffff800020adc380 user=0xffff800023ba2000, vmspace=0xfffffd807f00b450
estcpu=36, cpticks=0, pctcpu=0.0
user=0, sys=0, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
69609 226886 27096 0 2 0 syz-executor.1
*69609 456615 27096 0 7 0x4000000 syz-executor.1
29870 403708 31618 0 2 0 syz-executor.0
29870 18840 31618 0 7 0x4000000 syz-executor.0
27096 253046 63459 0 3 0x82 nanosleep syz-executor.1
57236 376985 0 0 3 0x14200 bored sosplice
31618 240022 63459 0 3 0x82 nanosleep syz-executor.0
63459 262789 68107 0 3 0x82 thrsleep syz-fuzzer
63459 414769 68107 0 3 0x4000082 thrsleep syz-fuzzer
63459 83980 68107 0 3 0x4000082 thrsleep syz-fuzzer
63459 111090 68107 0 3 0x4000082 thrsleep syz-fuzzer
63459 418037 68107 0 3 0x4000082 kqread syz-fuzzer
63459 453771 68107 0 3 0x4000082 thrsleep syz-fuzzer
63459 326063 68107 0 3 0x4000082 thrsleep syz-fuzzer
63459 390805 68107 0 3 0x4000082 thrsleep syz-fuzzer
63459 429572 68107 0 3 0x4000082 thrsleep syz-fuzzer
63459 75786 68107 0 3 0x4000082 thrsleep syz-fuzzer
68107 492452 81209 0 3 0x10008a pause ksh
81209 317370 28490 0 3 0x92 select sshd
52590 205621 1 0 3 0x100083 ttyin getty
28490 215594 1 0 3 0x80 select sshd
3804 258529 80237 74 3 0x100092 bpf pflogd
80237 211775 1 0 3 0x80 netio pflogd
8839 383432 75336 73 3 0x100090 kqread syslogd
75336 421469 1 0 3 0x100082 netio syslogd
29987 407736 1 77 3 0x100090 poll dhclient
85231 375866 1 0 3 0x80 poll dhclient
48110 84915 0 0 2 0x14200 zerothread
57238 463835 0 0 3 0x14200 aiodoned aiodoned
33486 471303 0 0 3 0x14200 syncer update
44973 89346 0 0 3 0x14200 cleaner cleaner
37750 17625 0 0 3 0x14200 reaper reaper
33419 240345 0 0 3 0x14200 pgdaemon pagedaemon
55519 343216 0 0 3 0x14200 bored crynlk
44882 251073 0 0 3 0x14200 bored crypto
33344 34992 0 0 3 0x40014200 acpi0 acpi0
79121 384622 0 0 3 0x40014200 idle1
94861 246021 0 0 3 0x14200 bored softnet
87709 162456 0 0 3 0x14200 bored systqmp
42298 390826 0 0 3 0x14200 bored systq
45031 3891 0 0 3 0x40014200 bored softclock
84045 450622 0 0 3 0x40014200 idle0
11920 150832 0 0 3 0x14200 bored smr
1 462383 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
Process 69609 (syz-executor.1) thread 0xffff800020ab0ee8 (456615)
exclusive kernel_lock &kernel_lock r = 1 (0xffffffff82651848)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1163
#1 rt_clone+0x5c sys/net/route.c:266
#2 rtalloc_mpath+0xba rt_match sys/net/route.c:244 [inline]
#2 rtalloc_mpath+0xba sys/net/route.c:359
#3 ip_output+0x4f2 sys/netinet/ip_output.c:204
#4 rip_output+0x252 sys/netinet/raw_ip.c:289
#5 rip_usrreq+0x46a sys/netinet/raw_ip.c:538
#6 sosend+0x645 sys/kern/uipc_socket.c:524
#7 sendit+0x52b sys/kern/uipc_syscalls.c:662
#8 sys_sendto+0x80 sys/kern/uipc_syscalls.c:527
#9 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline]
#9 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
#10 Xsyscall+0x128
exclusive rwlock netlock r = 0 (0xffffffff8246c0b8)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1163
#1 solock+0x5a sys/kern/uipc_socket2.c:282
#2 sosend+0x51b sys/kern/uipc_socket.c:512
#3 sendit+0x52b sys/kern/uipc_syscalls.c:662
#4 sys_sendto+0x80 sys/kern/uipc_syscalls.c:527
#5 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline]
#5 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
#6 Xsyscall+0x128
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim
devbuf 9546 6550K 7325K 78643K 12376 0 0
pcb 13 10K 12K 78643K 149 0 0
rtable 111 12K 12K 78643K 720 0 0
ifaddr 66 14K 15K 78643K 247 0 0
counters 39 33K 33K 78643K 39 0 0
ioctlops 0 0K 4K 78643K 1510 0 0
iov 0 0K 16K 78643K 156 0 0
mount 1 1K 1K 78643K 1 0 0
vnodes 1220 77K 77K 78643K 1826 0 0
UFS quota 1 32K 32K 78643K 1 0 0
UFS mount 5 36K 36K 78643K 5 0 0
shm 2 1K 5K 78643K 16 0 0
VM map 2 1K 1K 78643K 10 0 0
sem 11 1K 1K 78643K 11 0 0
dirhash 12 2K 2K 78643K 12 0 0
ACPI 1808 196K 290K 78643K 12765 0 0
file desc 6 17K 25K 78643K 731 0 0
sigio 1 0K 0K 78643K 8 0 0
proc 60 63K 83K 78643K 635 0 0
subproc 32 2K 2K 78643K 85 0 0
NFS srvsock 1 0K 0K 78643K 1 0 0
NFS daemon 1 16K 16K 78643K 1 0 0
ip_moptions 0 0K 1K 78643K 96 0 0
in_multi 30 2K 2K 78643K 107 0 0
ether_multi 1 0K 0K 78643K 10 0 0
mrt 0 0K 0K 78643K 6 0 0
ISOFS mount 1 32K 32K 78643K 1 0 0
MSDOSFS mount 1 16K 16K 78643K 1 0 0
ttys 60 265K 265K 78643K 60 0 0
exec 0 0K 1K 78643K 313 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 98 21K 30K 78643K 3502 0 0
UVM aobj 30 2K 2K 78643K 31 0 0
memdesc 1 4K 4K 78643K 1 0 0
crypto data 1 1K 1K 78643K 1 0 0
ip6_options 0 0K 0K 78643K 134 0 0
NDP 14 0K 0K 78643K 72 0 0
temp 185 3556K 3631K 78643K 22438 0 0
kqueue 0 0K 0K 78643K 15 0 0
SYN cache 2 16K 16K 78643K 2 0 0
ddb{0}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
arp 64 18 0 13 1 0 1 1 0 8 0
plcache 128 20 0 0 1 0 1 1 0 8 0
rtpcb 80 61 0 59 1 0 1 1 0 8 0
rtentry 112 113 0 69 2 0 2 2 0 8 0
unpcb 120 546 0 536 2 1 1 2 0 8 0
syncache 264 7 0 7 3 3 0 1 0 8 0
tcpqe 32 6157 0 6157 1 1 0 1 0 8 0
tcpcb 544 1615 0 1611 13 11 2 11 0 8 1
inpcb 280 2134 0 2125 13 10 3 9 0 8 2
rttmr 72 1 0 1 1 1 0 1 0 8 0
nd6 48 12 0 9 1 0 1 1 0 8 0
pkpcb 40 1 0 1 1 0 1 1 0 8 1
ppxss 1128 39 0 39 4 3 1 1 0 8 1
pffrag 232 9 0 9 5 4 1 1 0 482 1
pffrnode 88 9 0 9 5 4 1 1 0 8 1
pffrent 40 63 0 63 5 4 1 1 0 8 1
pfosfp 40 846 0 423 5 0 5 5 0 8 0
pfosfpen 112 1428 0 714 21 0 21 21 0 8 0
pfstitem 24 55 0 28 1 0 1 1 0 8 0
pfstkey 112 55 0 28 1 0 1 1 0 8 0
pfstate 328 55 0 28 3 0 3 3 0 8 0
pfrule 1360 21 0 16 2 1 1 2 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 493 0 282 16 1 15 15 0 8 1
art_table 32 494 0 282 2 0 2 2 0 8 0
art_node 16 110 0 69 1 0 1 1 0 8 0
sysvmsgpl 40 100 0 61 1 0 1 1 0 8 0
semupl 112 1 0 1 1 1 0 1 0 8 0
semapl 112 9 0 0 1 0 1 1 0 8 0
shmpl 112 29 0 1 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino1pl 128 2499 0 1098 46 0 46 46 0 8 0
ffsino 272 2499 0 1098 94 0 94 94 0 8 0
nchpl 144 3710 0 2108 61 0 61 61 0 8 0
uvmvnodes 72 2971 0 0 55 0 55 55 0 8 0
vnodes 208 2971 0 0 157 0 157 157 0 8 0
namei 1024 11241 0 11241 5 4 1 1 0 8 1
percpumem 16 30 0 0 1 0 1 1 0 8 0
vmpool 552 8 0 8 3 2 1 1 0 8 1
scsiplug 64 1 0 1 1 0 1 1 0 8 1
scxspl 192 11782 0 11782 17 14 3 7 0 8 3
plimitpl 152 79 0 71 1 0 1 1 0 8 0
sigapl 432 922 0 906 3 1 2 3 0 8 0
futexpl 56 16330 0 16330 1 0 1 1 0 8 1
knotepl 112 212 0 193 1 0 1 1 0 8 0
kqueuepl 104 302 0 300 4 3 1 4 0 8 0
pipepl 112 562 0 543 3 2 1 2 0 8 0
fdescpl 488 923 0 906 3 0 3 3 0 8 0
filepl 152 7582 0 7479 19 13 6 14 0 8 2
lockfpl 104 256 0 255 1 0 1 1 0 8 0
lockfspl 48 83 0 82 1 0 1 1 0 8 0
sessionpl 112 21 0 10 1 0 1 1 0 8 0
pgrppl 48 29 0 18 1 0 1 1 0 8 0
ucredpl 96 785 0 776 1 0 1 1 0 8 0
zombiepl 144 906 0 906 4 3 1 1 0 8 1
processpl 896 939 0 906 4 0 4 4 0 8 0
procpl 632 2584 0 2540 7 2 5 5 0 8 1
srpgc 64 4 0 4 2 1 1 1 0 8 1
sosppl 128 7 0 7 2 2 0 1 0 8 0
sockpl 384 2749 0 2728 21 14 7 14 0 8 4
mcl64k 65536 271 0 0 33 0 33 33 0 8 0
mcl16k 16384 3 0 0 1 0 1 1 0 8 0
mcl12k 12288 4 0 0 1 0 1 1 0 8 0
mcl9k 9216 4 0 0 1 0 1 1 0 8 0
mcl8k 8192 4 0 0 1 0 1 1 0 8 0
mcl4k 4096 9 0 0 2 0 2 2 0 8 0
mcl2k2 2112 2 0 0 1 0 1 1 0 8 0
mcl2k 2048 173 0 0 21 0 21 21 0 8 0
mtagpl 80 39 0 0 1 0 1 1 0 8 0
mbufpl 256 448 0 0 26 1 25 25 0 8 0
bufpl 256 8547 0 1499 441 0 441 441 0 8 0
anonpl 16 121372 0 106068 89 4 85 85 0 124 14
amapchunkpl 152 5748 0 5640 12 6 6 10 0 158 0
amappl16 192 5149 0 4203 69 13 56 60 0 8 8
amappl15 184 382 0 380 1 0 1 1 0 8 0
amappl14 176 51 0 49 2 1 1 1 0 8 0
amappl13 168 392 0 390 2 1 1 1 0 8 0
amappl12 160 17 0 15 2 1 1 1 0 8 0
amappl11 152 64 0 49 1 0 1 1 0 8 0
amappl10 144 72 0 67 1 0 1 1 0 8 0
amappl9 136 659 0 652 1 0 1 1 0 8 0
amappl8 128 199 0 175 1 0 1 1 0 8 0
amappl7 120 116 0 109 1 0 1 1 0 8 0
amappl6 112 78 0 68 1 0 1 1 0 8 0
amappl5 104 165 0 151 1 0 1 1 0 8 0
amappl4 96 1208 0 1174 2 1 1 2 0 8 0
amappl3 88 128 0 122 1 0 1 1 0 8 0
amappl2 80 6890 0 6806 4 2 2 3 0 8 0
amappl1 72 30146 0 29703 26 16 10 20 0 8 0
amappl 80 2883 0 2845 3 1 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 17 0 17 1 1 0 1 0 8 0
aobjpl 64 30 0 1 1 0 1 1 0 8 0
uaddrrnd 24 931 0 906 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 931 0 906 1 0 1 1 0 8 0
vmmpekpl 168 10917 0 10880 2 0 2 2 0 8 0
vmmpepl 168 122557 0 120383 194 67 127 127 0 357 30
vmsppl 368 922 0 906 2 0 2 2 0 8 0
pdppl 4096 1869 0 1828 8 2 6 6 0 8 0
pvpl 32 345595 0 327044 227 27 200 200 0 265 34
pmappl 232 930 0 914 4 2 2 2 0 8 1
extentpl 40 41 0 26 1 0 1 1 0 8 0
phpool 112 671 0 22 19 0 19 19 0 8 0