uvm_fault(0xfffffd8066e2ad88, 0x0, 0, 1) -> e
fatal page fault in supervisor mode
trap type 6 code 0 rip ffffffff832d2c88 cs 8 rflags 10207 cr2 0 cpl 0 rsp ffff8000317d6610
gsbase 0xffff8000299edff0 kgsbase 0x0
panic: trap type 6, code=0, pc=ffffffff832d2c88
Starting stack trace...
panic(ffffffff833b8594) at panic+0x1d0 sys/kern/subr_prf.c:229
kerntrap(ffff8000317d6560) at kerntrap+0x30b
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
dt_ioctl_record_stop(ffff80000149e000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593
dtclose(21e5f,81,2000,ffff80003c504a98) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline]
dtclose(21e5f,81,2000,ffff80003c504a98) at dtclose+0x109 sys/dev/dt/dt_dev.c:239
spec_close(ffff8000317d6710) at spec_close+0x466 sys/kern/spec_vnops.c:-1
VOP_CLOSE(fffffd805b5f1490,81,fffffd80097fb3a8,ffff80003c504a98) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156
vn_closefile(fffffd806c23d678,ffff80003c504a98) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline]
vn_closefile(fffffd806c23d678,ffff80003c504a98) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615
fdrop(fffffd806c23d678,ffff80003c504a98) at fdrop+0x121 sys/kern/kern_descrip.c:1280
closef(fffffd806c23d678,ffff80003c504a98) at closef+0x192 sys/kern/kern_descrip.c:1264
fdfree(ffff80003c504a98) at fdfree+0x116 sys/kern/kern_descrip.c:1195
exit1(ffff80003c504a98,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215
sys_exit(ffff80003c504a98,ffff8000317d6a80,ffff8000317d69d0) at sys_exit+0x1a sys/kern/kern_exit.c:-1
syscall(ffff8000317d6a80) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff8000317d6a80) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7c2262404d10, count: 242
End of stack trace.
WARNING: SPL NOT LOWERED ON TRAP EXIT 4 0
Stopped at alltraps_kern_meltdown+0xb8: movl %ebx,%gs:0x688
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*414832 57461 0 0 0x4000000 1K syz-executor
194420 26774 60929 0x10 0x4000000 0 syz-executor
alltraps_kern_meltdown() at alltraps_kern_meltdown+0xb8
copystr_fault() at copystr_fault
namei(ffff80003c429700) at namei+0x190 sys/kern/vfs_lookup.c:156
vn_open(ffff80003c429700,11,0) at vn_open+0x15a sys/kern/vfs_vnops.c:140
doopenat(ffff80002a2be2b0,ffffff9c,200000000080,10,0,ffff80003c4298b0) at doopenat+0x35b sys/kern/vfs_syscalls.c:1138
syscall(ffff80003c429960) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c429960) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x719cf5fb220, count: 8
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{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
*cpu1: uvm_fault(0xfffffd8066e2ad88, 0x0, 0, 1) -> e
ddb{1}> trace
alltraps_kern_meltdown() at alltraps_kern_meltdown+0xb8
copystr_fault() at copystr_fault
namei(ffff80003c429700) at namei+0x190 sys/kern/vfs_lookup.c:156
vn_open(ffff80003c429700,11,0) at vn_open+0x15a sys/kern/vfs_vnops.c:140
doopenat(ffff80002a2be2b0,ffffff9c,200000000080,10,0,ffff80003c4298b0) at doopenat+0x35b sys/kern/vfs_syscalls.c:1138
syscall(ffff80003c429960) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c429960) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x719cf5fb220, count: -7
ddb{1}> show registers
rdi 0
rsi 0
rbp 0xffff80003c4293c0
rbx 0
rdx 0
rcx 0xffff80002a2be2b0
rax 0x2a
r8 0xffff80003c4292f0
r9 0x1
r10 0xd50863e843581b56
r11 0x4b61a1b57a5ffacc
r12 0xffff80002a263800
r13 0xffff80003c429740
r14 0x400
r15 0x200000000080
rip 0xffffffff832f020b alltraps_kern_meltdown+0xb8
cs 0x8
rflags 0x246
rsp 0xffff80003c429340
ss 0x10
alltraps_kern_meltdown+0xb8: movl %ebx,%gs:0x688
ddb{1}> show proc
PROC (syz-executor) tid=414832 pid=57461 tcnt=4 stat=onproc
flags process=0 proc=4000000<THREAD>
runpri=36, usrpri=86, slppri=36, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff80002a2bf770,0xffff80002a2bfa18
process=0xffff8000fffece88 user=0xffff80003c424000, vmspace=0xfffffd8066e2a9b8
estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
57461 453303 25646 0 2 0 syz-executor
57461 128276 25646 0 3 0x4000080 fsleep syz-executor
*57461 414832 25646 0 7 0x4000000 syz-executor
57461 99887 25646 0 3 0x4000080 fsleep syz-executor
26774 66004 42372 60929 3 0x90 nanoslp syz-executor
26774 194420 42372 60929 7 0x4000010 syz-executor
26774 138130 42372 60929 3 0x4000090 fsleep syz-executor
26774 288682 42372 60929 2 0x4000010 syz-executor
85450 112949 50932 0 2 0 syz-executor
85450 114884 50932 0 3 0x4000080 fsleep syz-executor
20339 232019 61603 0 2 0 syz-executor
20339 500733 61603 0 2 0x4000000 syz-executor
20339 227811 61603 0 3 0x4000080 fsleep syz-executor
47532 183890 0 0 3 0x14280 nfsidl nfsio
49401 362198 17379 0 2 0x10000082 syz-executor
61603 182899 17379 0 3 0x82 nanoslp syz-executor
27138 408747 17379 0 3 0x82 nanoslp syz-executor
25646 408878 17379 0 3 0x82 nanoslp syz-executor
91642 204181 1 0 3 0x100083 ttyopn getty
82827 269134 0 0 3 0x14200 acct acct
92056 139650 17379 0 2 0x2 syz-executor
42372 435652 17379 0 3 0x82 nanoslp syz-executor
12126 56339 0 0 3 0x14200 bored sosplice
50932 289145 17379 0 3 0x82 nanoslp syz-executor
5876 299407 17379 0 3 0x82 nanoslp syz-executor
17379 16522 42936 0 3 0x82 kqread syz-executor
42936 174560 15756 0 3 0x10008a sigsusp ksh
15756 269811 64539 0 3 0x98 kqread sshd-session
64539 498780 69500 0 3 0x92 kqread sshd-session
69500 370486 1 0 3 0x88 kqread sshd
34081 31358 90871 74 3 0x1100092 bpf pflogd
90871 374122 1 0 3 0x80 sbwait pflogd
55833 163495 18966 73 3 0x1100090 kqread syslogd
18966 413286 1 0 3 0x100082 sbwait syslogd
63043 233043 1 0 3 0x100080 kqread resolvd
39305 279895 48324 77 3 0x100092 kqread dhcpleased
63755 397333 48324 77 3 0x100092 kqread dhcpleased
48324 8135 1 0 3 0x80 kqread dhcpleased
18392 499183 0 0 3 0x14200 bored smr
80520 47474 0 0 2 0x14200 zerothread
40899 307860 0 0 3 0x14200 aiodoned aiodoned
63120 89241 0 0 3 0x14200 syncer update
70410 15752 0 0 3 0x14200 cleaner cleaner
42810 192370 0 0 3 0x14200 reaper reaper
8096 145906 0 0 3 0x14200 pgdaemon pagedaemon
87903 407492 0 0 3 0x14200 bored viomb
89971 352973 0 0 3 0x40014200 acpi0 acpi0
3284 149816 0 0 3 0x40014200 idle1
19196 451602 0 0 3 0x14200 bored softnet1
98995 257468 0 0 2 0x14200 softnet0
2783 417134 0 0 2 0x40014200 systqmp
30161 123469 0 0 3 0x14200 bored systq
37238 52978 0 0 3 0x14200 tmoslp softclockmp
66025 250589 0 0 3 0x40014200 tmoslp softclock
68995 518729 0 0 3 0x40014200 idle0
1 33798 0 0 3 0x82 wait init
0 0 -1 0 3 0x10010200 scheduler swapper
ddb{1}> show all locks
Process 26774 (syz-executor) thread 0xffff80003c3fcd20 (194420)
Process 26774 (syz-executor) thread 0xffff80002a2bfca0 (288682)
Process 92056 (syz-executor) thread 0xffff8000fffeb4e0 (139650)
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10249 11133K 11725K 166960K 13335 0
pcb 18 16K 22K 166960K 469 0
rtable 242 11K 12K 166960K 1227 0
pf 36 18K 67487K 166960K 285 0
ifaddr 40 7K 8K 166960K 176 0
ifgroup 51 2K 2K 166960K 271 0
sysctl 4 1K 9K 166960K 23 0
counters 66 36K 37K 166960K 288 0
ioctlops 0 0K 5K 166960K 1961 0
iov 0 0K 24K 166960K 162 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1485 93K 94K 166960K 3156 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 3 620K 628K 166960K 43 0
VM map 2 1K 1K 166960K 2 0
sem 18 32K 32K 166960K 75 0
dirhash 12 2K 3K 166960K 96 0
ACPI 1692 195K 286K 166960K 12470 0
file desc 16 57K 236K 166960K 2415 0
sigio 0 0K 0K 166960K 175 0
proc 73 131K 180K 166960K 1007 0
subproc 72 4K 4K 166960K 144 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 1 0K 0K 166960K 610 0
in_multi 92 6K 7K 166960K 319 0
ether_multi 3 0K 0K 166960K 43 0
mrt 2 0K 0K 166960K 22 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 247 1102K 1102K 166960K 247 0
exec 0 0K 1K 166960K 1015 0
fusefs mount 1 32K 32K 166960K 1 0
pfkey data 0 0K 0K 166960K 3 0
tdb 3 0K 0K 166960K 3 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 246 176K 204K 166960K 23799 0
UVM aobj 66 3K 3K 166960K 73 0
pinsyscall 41 82K 103K 166960K 3776 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 1 0K 1K 166960K 244 0
NDP 11 0K 2K 166960K 117 0
temp 78 8656K 8906K 166960K 128073 0
kqueue 13 20K 34K 166960K 503 0
SYN cache 2 16K 16K 166960K 2 0
ddb{1}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
plcache 128 26 0 0 1 0 1 1 0 8 0
rtpcb 120 508 0 504 6 5 1 3 0 8 0
rtentry 176 365 0 266 6 0 6 6 0 8 0
unpcb 144 1658 0 1640 15 14 1 6 0 8 0
syncache 336 16 0 16 5 5 0 1 0 8 0
tcpqe 32 11 0 11 2 2 0 1 0 8 0
tcpcb 736 779 0 771 13 12 1 7 0 8 0
arp 136 79 0 57 1 0 1 1 0 8 0
inpcb 328 2736 0 2723 39 34 5 12 0 8 3
nd6 152 55 0 29 2 0 2 2 0 8 0
pkpcb 40 85 0 83 8 7 1 1 0 8 0
kcovpl 48 16 0 8 1 0 1 1 0 8 0
mppekey 1024 2 0 2 2 2 0 1 0 8 0
ppxss 1192 83 0 83 7 7 0 1 0 8 0
pppxif 1504 10 0 10 4 4 0 1 0 8 0
pfstscr 40 5 0 4 1 0 1 1 0 8 0
pffrag 232 38 0 30 1 0 1 1 0 482 0
pffrnode 88 18 0 11 1 0 1 1 0 8 0
pffrent 40 68 0 60 1 0 1 1 0 8 0
pfosfp 40 1428 0 1005 5 0 5 5 0 8 0
pfosfpen 112 1428 0 714 21 0 21 21 0 8 0
pfrktable 1344 7 0 7 1 1 0 1 0 8 0
pfanchor 1288 6 0 1 1 0 1 1 0 8 0
pftag 88 1 0 0 1 0 1 1 0 8 0
pfstitem 24 214 0 132 1 0 1 1 0 8 0
pfstkey 128 220 0 139 4 0 4 4 0 8 0
pfstate 384 216 0 136 11 0 11 11 0 8 0
pfrule 1344 34 0 29 2 1 1 2 0 8 0
rttmr 136 4 0 4 3 3 0 1 0 8 0
art_heap8 4096 3 0 0 3 0 3 3 0 8 0
art_heap4 256 1423 0 1058 47 16 31 33 0 8 6
art_table 40 1426 0 1058 6 0 6 6 0 8 0
art_node 32 361 0 278 2 0 2 2 0 8 0
sysvmsgpl 40 11 0 8 2 1 1 1 0 8 0
semupl 112 1 0 1 1 1 0 1 0 8 0
semapl 112 70 0 54 1 0 1 1 0 8 0
shmpl 112 70 0 7 2 0 2 2 0 8 0
dirhash 1024 75 0 58 3 0 3 3 0 8 0
dino2pl 256 6020 0 4495 97 1 96 96 0 8 0
ffsino 296 6020 0 4495 119 1 118 118 0 8 0
nchpl 144 9348 0 8758 65 39 26 65 0 8 0
rtmask 32 13 0 13 6 6 0 1 0 8 0
vnodes 216 5926 0 0 330 0 330 330 0 8 0
namei 1024 34775 0 34773 7 6 1 2 0 8 0
percpumem 16 159 0 111 1 0 1 1 0 8 0
pfiaddrpl 120 2 0 2 1 1 0 1 0 8 0
kstatmem 264 172 0 148 5 3 2 3 0 8 0
scsiplug 72 11 0 11 8 7 1 1 0 8 1
scxspl 216 81471 0 81471 13 12 1 8 1 8 1
plimitpl 152 820 0 800 1 0 1 1 0 8 0
sigapl 424 2725 0 2675 9 2 7 8 0 8 0
knotepl 120 822 0 0 25 0 25 25 0 8 0
kqueuepl 224 1140 0 1065 21 16 5 5 0 8 0
pipepl 344 559 0 531 17 14 3 9 0 8 0
fdescpl 528 2681 0 2651 3 0 3 3 0 8 0
filepl 160 19271 0 18975 35 20 15 21 0 8 1
lockfpl 104 774 0 770 2 1 1 2 0 8 0
lockfspl 48 338 0 334 1 0 1 1 0 8 0
sessionpl 144 40 0 31 1 0 1 1 0 8 0
pgrppl 48 77 0 60 1 0 1 1 0 8 0
ucredpl 104 2707 0 2693 1 0 1 1 0 8 0
zombiepl 144 3611 0 3608 3 2 1 1 0 8 0
processpl 1232 2725 0 2675 7 2 5 6 0 8 0
procpl 664 6608 0 6549 8 1 7 8 0 8 0
sosppl 168 12 0 12 6 5 1 1 0 8 1
sockpl 752 5195 0 5158 75 65 10 20 0 8 6
mcl64k 65536 5 0 0 1 0 1 1 0 8 0
mcl16k 16384 2 0 0 1 0 1 1 0 8 0
mcl12k 12288 3 0 0 1 0 1 1 0 8 0
mcl9k 9216 1 0 0 1 0 1 1 0 8 0
mcl8k 8192 3 0 0 1 0 1 1 0 8 0
mcl4k 4096 138 0 0 16 0 16 16 0 8 0
mcl2k 2048 98 0 0 7 0 7 7 0 8 0
mtagpl 96 4 0 0 1 0 1 1 0 8 0
mbufpl 256 1210 0 0 74 0 74 74 0 8 0
bufpl 280 34544 0 28407 439 0 439 439 0 8 0
anonpl 32 14415 0 0 117 0 117 117 0 246 0
amapchunkpl 152 82110 0 81635 66 42 24 39 0 158 1
amappl16 200 11113 0 11078 66 56 10 30 0 8 0
amappl15 192 10 0 8 1 0 1 1 0 8 0
amappl14 184 3 0 3 1 1 0 1 0 8 0
amappl13 176 519 0 517 1 0 1 1 0 8 0
amappl12 168 3117 0 3076 3 0 3 3 0 8 0
amappl11 160 6 0 6 1 1 0 1 0 8 0
amappl10 152 52 0 38 1 0 1 1 0 8 0
amappl9 144 255 0 255 2 2 0 1 0 8 0
amappl8 136 32 0 30 1 0 1 1 0 8 0
amappl7 128 112 0 110 1 0 1 1 0 8 0
amappl6 120 384 0 370 1 0 1 1 0 8 0
amappl5 112 85 0 74 1 0 1 1 0 8 0
amappl4 104 500 0 469 1 0 1 1 0 8 0
amappl3 96 14745 0 14655 3 0 3 3 0 8 0
amappl2 88 2831 0 2755 2 0 2 2 0 8 0
amappl1 80 21177 0 20582 16 3 13 15 0 8 0
amappl 88 22459 0 22296 5 0 5 5 0 92 0
uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0
dma65536 65536 1 0 1 1 1 0 1 0 8 0
dma16384 16384 2 0 2 2 2 0 1 0 8 0
dma8192 8192 1 0 1 1 1 0 1 0 8 0
dma4096 4096 2 0 2 2 2 0 1 0 8 0
dma1024 1024 1 0 0 1 0 1 1 0 8 0
dma256 256 10 0 10 3 3 0 1 0 8 0
dma128 128 257 0 257 4 4 0 1 0 8 0
dma64 64 7 0 7 2 2 0 1 0 8 0
dma32 32 9 0 9 2 2 0 1 0 8 0
dma16 16 18 0 17 1 0 1 1 0 8 0
aobjpl 72 72 0 7 2 0 2 2 0 8 0
uaddrrnd 24 2681 0 2651 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 2681 0 2651 1 0 1 1 0 8 0
vmmpekpl 168 22929 0 22870 4 0 4 4 0 8 0
vmmpepl 168 180155 0 178253 133 37 96 112 0 357 1
vmsppl 488 2680 0 2651 7 2 5 5 0 8 0
rwobjpl 80 56227 0 49292 151 5 146 151 0 8 0
pdppl 4096 5370 0 5302 147 75 72 86 0 8 4
pvpl 32 24993 0 0 202 0 202 202 0 265 0
pmappl 256 2680 0 2651 3 0 3 3 0 8 0
extentpl 40 45 0 27 1 0 1 1 0 8 0
phpool 112 437 0 126 9 0 9 9 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x27: addq $0x8,%rsp
x86_ipi_db(ffffffff83868ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394
x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27
__mp_lock(ffffffff8394b8b0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline]
__mp_lock(ffffffff8394b8b0) at __mp_lock+0x192 sys/kern/kern_lock.c:165
softintr_dispatch(2) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83
dosoftint(2) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847
Xsofttty() at Xsofttty+0x27
__mp_lock(ffffffff8394b8b0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline]
__mp_lock(ffffffff8394b8b0) at __mp_lock+0x192 sys/kern/kern_lock.c:165
softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83
dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847
Xsoftclock() at Xsoftclock+0x27
__sanitizer_cov_trace_const_cmp4(0,0) at __sanitizer_cov_trace_const_cmp4+0x2e kd_curproc sys/dev/kcov.c:584 [inline]
__sanitizer_cov_trace_const_cmp4(0,0) at __sanitizer_cov_trace_const_cmp4+0x2e sys/dev/kcov.c:230
uvm_map_lookup_entry(fffffd8066e2a030,18000,ffff80002a304238) at uvm_map_lookup_entry+0x218 sys/uvm/uvm_map.c:1566
uvmfault_lookup(ffff80002a304210,0) at uvmfault_lookup+0x133 sys/uvm/uvm_fault.c:1902
end trace frame: 0xffff80002a304100, count: 0
ddb{0}> trace
x86_ipi_db(ffffffff83868ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394
x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27
__mp_lock(ffffffff8394b8b0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline]
__mp_lock(ffffffff8394b8b0) at __mp_lock+0x192 sys/kern/kern_lock.c:165
softintr_dispatch(2) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83
dosoftint(2) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847
Xsofttty() at Xsofttty+0x27
__mp_lock(ffffffff8394b8b0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline]
__mp_lock(ffffffff8394b8b0) at __mp_lock+0x192 sys/kern/kern_lock.c:165
softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83
dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847
Xsoftclock() at Xsoftclock+0x27
__sanitizer_cov_trace_const_cmp4(0,0) at __sanitizer_cov_trace_const_cmp4+0x2e kd_curproc sys/dev/kcov.c:584 [inline]
__sanitizer_cov_trace_const_cmp4(0,0) at __sanitizer_cov_trace_const_cmp4+0x2e sys/dev/kcov.c:230
uvm_map_lookup_entry(fffffd8066e2a030,18000,ffff80002a304238) at uvm_map_lookup_entry+0x218 sys/uvm/uvm_map.c:1566
uvmfault_lookup(ffff80002a304210,0) at uvmfault_lookup+0x133 sys/uvm/uvm_fault.c:1902
uvm_fault_check(ffff80002a304210,ffff80002a304248,ffff80002a304280,0) at uvm_fault_check+0x4f sys/uvm/uvm_fault.c:699
uvm_fault(fffffd8066e2a030,18000,0,2) at uvm_fault+0x106 sys/uvm/uvm_fault.c:633
kpageflttrap(ffff80002a3043c0,18020) at kpageflttrap+0x2f4 sys/arch/amd64/amd64/trap.c:283
kerntrap(ffff80002a3043c0) at kerntrap+0x198 sys/arch/amd64/amd64/trap.c:491
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
copyout() at copyout+0x64
syscall(ffff80002a304800) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a304800) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xe1c62cbec20, count: -22
ddb{0}> machine ddbcpu 1
Stopped at alltraps_kern_meltdown+0xb8: movl %ebx,%gs:0x688
alltraps_kern_meltdown() at alltraps_kern_meltdown+0xb8
copystr_fault() at copystr_fault
namei(ffff80003c429700) at namei+0x190 sys/kern/vfs_lookup.c:156
vn_open(ffff80003c429700,11,0) at vn_open+0x15a sys/kern/vfs_vnops.c:140
doopenat(ffff80002a2be2b0,ffffff9c,200000000080,10,0,ffff80003c4298b0) at doopenat+0x35b sys/kern/vfs_syscalls.c:1138
syscall(ffff80003c429960) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c429960) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x719cf5fb220, count: 8
ddb{1}> trace
alltraps_kern_meltdown() at alltraps_kern_meltdown+0xb8
copystr_fault() at copystr_fault
namei(ffff80003c429700) at namei+0x190 sys/kern/vfs_lookup.c:156
vn_open(ffff80003c429700,11,0) at vn_open+0x15a sys/kern/vfs_vnops.c:140
doopenat(ffff80002a2be2b0,ffffff9c,200000000080,10,0,ffff80003c4298b0) at doopenat+0x35b sys/kern/vfs_syscalls.c:1138
syscall(ffff80003c429960) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c429960) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x719cf5fb220, count: -7