panic: uvm_fault: fault on non-pageable map (0xffffffff82559bf8, 0xffff800000aa7000)
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*217546 57071 0 0 0x4000000 0 syz-executor.1
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic() at panic+0x15c sys/kern/subr_prf.c:207
uvm_fault(ffffffff825597b0,ffff800000aa7000,1,4) at uvm_fault+0x2148 uvmfault_amapcopy sys/uvm/uvm_fault.c:463 [inline]
uvm_fault(ffffffff825597b0,ffff800000aa7000,1,4) at uvm_fault+0x2148 sys/uvm/uvm_fault.c:559
pageflttrap() at pageflttrap+0x239 sys/arch/amd64/amd64/trap.c:199
kerntrap(ffff80001798cf50) at kerntrap+0xdb sys/arch/amd64/amd64/trap.c:287
alltraps_kern_meltdown(6,ffff800017788000,fffffd802db818c8,11,ffff80000005bfe0,ffff80001798d1b8) at alltraps_kern_meltdown+0x7b
ffff800000aa7800(b,ffff80001798d118,83,ffff80001798d1b8,0,b) at 0xffff800000aa7800
rt_match(fffffd8037005198,0,1,0) at rt_match+0xbe rt_clone sys/net/route.c:266 [inline]
rt_match(fffffd8037005198,0,1,0) at rt_match+0xbe sys/net/route.c:242
in_pcbselsrc(ffff80001798d290,fffffd803037b120,fffffd8037005118) at in_pcbselsrc+0x219 sys/netinet/in_pcb.c:934
in_pcbconnect(fffffd8037005118,fffffd803037b100) at in_pcbconnect+0x107 sys/netinet/in_pcb.c:492
tcp_usrreq(fffffd8037006c00,4,0,fffffd803037b100,0,ffff8000ffff2508) at tcp_usrreq+0xada sys/netinet/tcp_usrreq.c:228
sys_connect(ffff8000ffff2508,ffff80001798d438,ffff80001798d480) at sys_connect+0x3df sys/kern/uipc_syscalls.c:388
syscall(ffff80001798d500) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555
Xsyscall(6,0,fffffffffffffecf,0,3,1bb846df010) at Xsyscall+0x128
end of kernel
end trace frame: 0x1be772d3400, count: 1
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>
ddb> set $lines = 0
ddb> set $maxwidth = 0
ddb> show panic
uvm_fault: fault on non-pageable map (0xffffffff82559bf8, 0xffff800000aa7000)
ddb> 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
uvm_fault(ffffffff825597b0,ffff800000aa7000,1,4) at uvm_fault+0x2148 uvmfault_amapcopy sys/uvm/uvm_fault.c:463 [inline]
uvm_fault(ffffffff825597b0,ffff800000aa7000,1,4) at uvm_fault+0x2148 sys/uvm/uvm_fault.c:559
pageflttrap() at pageflttrap+0x239 sys/arch/amd64/amd64/trap.c:199
kerntrap(ffff80001798cf50) at kerntrap+0xdb sys/arch/amd64/amd64/trap.c:287
alltraps_kern_meltdown(6,ffff800017788000,fffffd802db818c8,11,ffff80000005bfe0,ffff80001798d1b8) at alltraps_kern_meltdown+0x7b
ffff800000aa7800(b,ffff80001798d118,83,ffff80001798d1b8,0,b) at 0xffff800000aa7800
rt_match(fffffd8037005198,0,1,0) at rt_match+0xbe rt_clone sys/net/route.c:266 [inline]
rt_match(fffffd8037005198,0,1,0) at rt_match+0xbe sys/net/route.c:242
in_pcbselsrc(ffff80001798d290,fffffd803037b120,fffffd8037005118) at in_pcbselsrc+0x219 sys/netinet/in_pcb.c:934
in_pcbconnect(fffffd8037005118,fffffd803037b100) at in_pcbconnect+0x107 sys/netinet/in_pcb.c:492
tcp_usrreq(fffffd8037006c00,4,0,fffffd803037b100,0,ffff8000ffff2508) at tcp_usrreq+0xada sys/netinet/tcp_usrreq.c:228
sys_connect(ffff8000ffff2508,ffff80001798d438,ffff80001798d480) at sys_connect+0x3df sys/kern/uipc_syscalls.c:388
syscall(ffff80001798d500) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555
Xsyscall(6,0,fffffffffffffecf,0,3,1bb846df010) at Xsyscall+0x128
end of kernel
end trace frame: 0x1be772d3400, count: -14
ddb> show registers
rdi 0xffffffff817df537 db_enter+0x17
rsi 0x31a1 __ALIGN_SIZE+0x21a1
rbp 0xffff80001798cb80
rbx 0xffff80001798cc30
rdx 0x31a2 __ALIGN_SIZE+0x21a2
rcx 0xffff800017788000
rax 0xffff800017788000
r8 0xffff80001798cb40
r9 0x1
r10 0xffff800000a64540
r11 0x11f88dab1730682b
r12 0x3000000008
r13 0xffff80001798cb90
r14 0x100
r15 0x1
rip 0xffffffff817df538 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff80001798cb70
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb> show proc
PROC (syz-executor.1) pid=217546 stat=onproc
flags process=0 proc=4000000<THREAD>
pri=79, usrpri=79, nice=20
forw=0xffffffffffffffff, list=0xffff8000ffff2780,0xffffffff825a6d38
process=0xffff8000ffff66d0 user=0xffff800017988000, vmspace=0xfffffd803f013cc0
estcpu=36, cpticks=1, pctcpu=0.0
user=0, sys=1, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
57071 172558 22756 0 2 0 syz-executor.1
*57071 217546 22756 0 7 0x4000000 syz-executor.1
22756 182987 85534 0 3 0x82 nanosleep syz-executor.1
62520 437310 85534 0 3 0x2 biowait syz-executor.0
70003 100525 0 0 3 0x14200 acct acct
69277 262392 0 0 3 0x14200 bored sosplice
85534 289423 5196 0 3 0x82 thrsleep syz-fuzzer
85534 333552 5196 0 3 0x4000082 nanosleep syz-fuzzer
85534 114138 5196 0 3 0x4000082 thrsleep syz-fuzzer
85534 253636 5196 0 3 0x4000082 thrsleep syz-fuzzer
85534 203984 5196 0 3 0x4000082 thrsleep syz-fuzzer
85534 79477 5196 0 3 0x4000082 kqread syz-fuzzer
85534 373427 5196 0 3 0x4000082 thrsleep syz-fuzzer
5196 305814 15222 0 3 0x10008a pause ksh
15222 387388 56838 0 3 0x92 select sshd
67028 111798 1 0 3 0x100083 ttyin getty
56838 160628 1 0 3 0x80 select sshd
64867 369830 26409 73 3 0x100090 kqread syslogd
26409 478297 1 0 3 0x100082 netio syslogd
47591 411282 1 77 3 0x100090 poll dhclient
24305 111791 1 0 3 0x80 poll dhclient
28905 489029 0 0 2 0x14200 zerothread
89447 267733 0 0 3 0x14200 aiodoned aiodoned
72839 521883 0 0 3 0x14200 syncer update
86511 267762 0 0 3 0x14200 cleaner cleaner
54534 510270 0 0 3 0x14200 reaper reaper
13967 41034 0 0 3 0x14200 pgdaemon pagedaemon
47263 13042 0 0 3 0x14200 bored crynlk
17978 329564 0 0 3 0x14200 bored crypto
47875 167863 0 0 3 0x40014200 acpi0 acpi0
23973 417553 0 0 3 0x14200 bored softnet
8456 61792 0 0 3 0x14200 bored systqmp
47210 383533 0 0 3 0x14200 bored systq
24732 248441 0 0 3 0x40014200 bored softclock
50769 6647 0 0 3 0x40014200 idle0
78632 523185 0 0 3 0x14200 bored smr
1 127393 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 Kern Lim
devbuf 9606 6799K 14566K 78643K 14448 0 0
pcb 13 10K 12K 78643K 446 0 0
rtable 120 8K 9K 78643K 1220 0 0
ifaddr 81 17K 18K 78643K 338 0 0
counters 19 16K 16K 78643K 19 0 0
ioctlops 0 0K 2K 78643K 129 0 0
iov 0 0K 26K 78643K 418 0 0
mount 1 1K 1K 78643K 1 0 0
vnodes 1214 76K 77K 78643K 2611 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 28 0 0
VM map 23 5K 5K 78643K 36 0 0
sem 12 0K 1K 78643K 363 0 0
dirhash 12 2K 2K 78643K 12 0 0
ACPI 1793 195K 288K 78643K 12645 0 0
file desc 5 13K 25K 78643K 1627 0 0
sigio 0 0K 0K 78643K 44 0 0
proc 50 38K 63K 78643K 804 0 0
subproc 32 2K 2K 78643K 170 0 0
NFS srvsock 1 0K 0K 78643K 1 0 0
NFS daemon 1 16K 16K 78643K 1 0 0
ip_moptions 0 0K 0K 78643K 143 0 0
in_multi 30 2K 2K 78643K 231 0 0
ether_multi 1 0K 0K 78643K 9 0 0
mrt 0 0K 0K 78643K 10 0 0
ISOFS mount 1 32K 32K 78643K 1 0 0
MSDOSFS mount 1 16K 16K 78643K 1 0 0
ttys 162 715K 715K 78643K 162 0 0
exec 0 0K 1K 78643K 454 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 151 234K 234K 78643K 4959 0 0
UVM aobj 130 6K 6K 78643K 142 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 401 0 0
NDP 19 0K 0K 78643K 106 0 0
temp 219 3540K 3612K 78643K 26044 0 0
kqueue 0 0K 0K 78643K 25 0 0
SYN cache 2 16K 16K 78643K 2 0 0
ddb> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
arp 64 44 0 38 1 0 1 1 0 8 0
rtpcb 80 200 0 198 1 0 1 1 0 8 0
rtentry 112 239 0 195 2 0 2 2 0 8 0
unpcb 120 1338 0 1330 3 2 1 2 0 8 0
syncache 264 15 0 15 5 4 1 1 0 8 1
tcpqe 32 68 0 68 2 1 1 1 0 8 1
tcpcb 544 843 0 838 18 16 2 15 0 8 1
ipq 40 9 0 9 3 3 0 1 0 8 0
ipqe 40 63 0 63 3 3 0 1 0 8 0
inpcb 280 2176 0 2168 20 18 2 9 0 8 1
rttmr 72 5 0 4 2 1 1 1 0 8 0
nd6 48 28 0 25 2 1 1 1 0 8 0
pkpcb 40 4 0 4 2 2 0 1 0 8 0
ppxss 1128 31 0 31 6 5 1 1 0 8 1
art_heap8 4096 11 0 10 7 6 1 3 0 8 0
art_heap4 256 1002 0 761 26 9 17 17 0 8 1
art_table 32 1013 0 771 3 0 3 3 0 8 0
art_node 16 238 0 197 1 0 1 1 0 8 0
sysvmsgpl 40 53 0 38 1 0 1 1 0 8 0
semapl 112 361 0 351 1 0 1 1 0 8 0
shmpl 112 140 0 12 4 0 4 4 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino1pl 128 4423 0 3021 46 0 46 46 0 8 0
ffsino 240 4423 0 3021 83 0 83 83 0 8 0
nchpl 144 7437 0 6941 60 41 19 60 0 8 0
uvmvnodes 72 5461 0 0 100 0 100 100 0 8 0
vnodes 208 5461 0 0 288 0 288 288 0 8 0
namei 1024 25056 0 25055 1 0 1 1 0 8 0
vcpupl 1984 21 0 0 3 0 3 3 0 8 0
vmpool 520 34 0 13 2 0 2 2 0 8 0
scsiplug 64 2 0 2 1 1 0 1 0 8 0
scxspl 192 23477 0 23476 15 11 4 7 0 8 3
plimitpl 152 148 0 141 1 0 1 1 0 8 0
sigapl 432 1774 0 1761 2 0 2 2 0 8 0
futexpl 56 47295 0 47295 1 0 1 1 0 8 1
knotepl 112 411 0 392 1 0 1 1 0 8 0
kqueuepl 104 561 0 559 4 3 1 4 0 8 0
pipepl 112 1484 0 1465 4 2 2 2 0 8 1
fdescpl 424 1775 0 1761 2 0 2 2 0 8 0
filepl 120 17143 0 17046 16 11 5 11 0 8 2
lockfpl 104 3422 0 3421 1 0 1 1 0 8 0
lockfspl 48 763 0 762 1 0 1 1 0 8 0
sessionpl 112 25 0 15 1 0 1 1 0 8 0
pgrppl 48 41 0 31 1 0 1 1 0 8 0
ucredpl 96 1823 0 1816 1 0 1 1 0 8 0
zombiepl 144 1761 0 1761 1 0 1 1 0 8 1
processpl 864 1791 0 1761 4 0 4 4 0 8 0
procpl 632 3789 0 3752 4 0 4 4 0 8 0
sosppl 128 38 0 38 6 5 1 1 0 8 1
sockpl 384 3768 0 3750 30 25 5 14 0 8 3
mcl64k 65536 452 0 452 34 33 1 33 0 8 1
mcl16k 16384 24 0 24 7 6 1 1 0 8 1
mcl12k 12288 52 0 52 4 3 1 1 0 8 1
mcl9k 9216 32 0 32 4 3 1 1 0 8 1
mcl8k 8192 58 0 56 2 1 1 1 0 8 0
mcl4k 4096 172 0 172 3 2 1 1 0 8 1
mcl2k2 2112 15 0 15 7 6 1 1 0 8 1
mcl2k 2048 70072 0 70026 16 9 7 13 0 8 0
mtagpl 80 88 0 77 2 1 1 1 0 8 0
mbufpl 256 125797 0 125648 53 37 16 24 0 8 1
bufpl 256 12519 0 6074 404 0 404 404 0 8 0
anonpl 16 244354 0 225559 136 50 86 107 0 62 6
amapchunkpl 152 9381 0 9256 39 29 10 15 0 158 3
amappl16 192 11596 0 10484 149 81 68 78 0 8 11
amappl15 184 8 0 8 1 1 0 1 0 8 0
amappl14 176 534 0 529 1 0 1 1 0 8 0
amappl13 168 86 0 86 1 0 1 1 0 8 1
amappl12 160 451 0 448 1 0 1 1 0 8 0
amappl11 152 70 0 59 1 0 1 1 0 8 0
amappl10 144 198 0 195 1 0 1 1 0 8 0
amappl9 136 1015 0 1008 1 0 1 1 0 8 0
amappl8 128 582 0 549 2 0 2 2 0 8 0
amappl7 120 242 0 236 1 0 1 1 0 8 0
amappl6 112 72 0 62 1 0 1 1 0 8 0
amappl5 104 665 0 654 1 0 1 1 0 8 0
amappl4 96 2024 0 1998 1 0 1 1 0 8 0
amappl3 88 641 0 631 1 0 1 1 0 8 0
amappl2 80 12959 0 12889 3 1 2 3 0 8 0
amappl1 72 41760 0 41347 26 16 10 20 0 8 0
amappl 80 4179 0 4127 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 17 0 17 1 1 0 1 0 8 0
aobjpl 64 141 0 12 3 0 3 3 0 8 0
uaddrrnd 24 1809 0 1761 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 1809 0 1761 1 0 1 1 0 8 0
vmmpekpl 168 16057 0 16025 2 0 2 2 0 8 0
vmmpepl 168 225248 0 222995 218 78 140 140 0 357 34
vmsppl 272 1774 0 1761 2 1 1 2 0 8 0
pdppl 4096 3624 0 3569 9 1 8 8 0 8 0
pvpl 32 666683 0 645296 324 97 227 310 0 265 45
pmappl 200 1808 0 1774 2 0 2 2 0 8 0
extentpl 40 41 0 26 1 0 1 1 0 8 0
phpool 112 670 0 123 17 1 16 17 0 8 0