uvm_fault(0xfffffd806efd2a58, 0x0, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at pool_do_get+0x2dc: movq 0(%rax),%rax
TID PID UID PRFLAGS PFLAGS CPU COMMAND
* 25884 91795 0 0x8000002 0 1 syz-executor.2
109507 39106 0 0x1a000002 0x4000000 0 syz-fuzzer
pool_do_get(ffffffff82e4fbd8,1,ffff80002f0f1118) at pool_do_get+0x2dc pool_update_curpage sys/kern/subr_pool.c:1059 [inline]
pool_do_get(ffffffff82e4fbd8,1,ffff80002f0f1118) at pool_do_get+0x2dc sys/kern/subr_pool.c:765
pool_get(ffffffff82e4fbd8,1) at pool_get+0xf0 sys/kern/subr_pool.c:582
pmap_create() at pmap_create+0x144 sys/arch/amd64/amd64/pmap.c:1369
uvmspace_fork(ffff8000ffffb0e0) at uvmspace_fork+0x64 uvmspace_init sys/uvm/uvm_map.c:3302 [inline]
uvmspace_fork(ffff8000ffffb0e0) at uvmspace_fork+0x64 uvmspace_alloc sys/uvm/uvm_map.c:3280 [inline]
uvmspace_fork(ffff8000ffffb0e0) at uvmspace_fork+0x64 sys/uvm/uvm_map.c:3852
process_new(ffff8000ffff6540,ffff8000ffffb0e0,1) at process_new+0x3dc sys/kern/kern_fork.c:278
fork1(ffff80002d6af228,1,ffffffff821ef240,0,ffff80002f0f13a0,0) at fork1+0x2ef sys/kern/kern_fork.c:399
syscall(ffff80002f0f1450) at syscall+0x854 mi_syscall sys/sys/syscall_mi.h:180 [inline]
syscall(ffff80002f0f1450) at syscall+0x854 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7212c53b6840, count: 7
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}>
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
*cpu1: uvm_fault(0xfffffd806efd2a58, 0x0, 0, 1) -> e
ddb{1}> trace
pool_do_get(ffffffff82e4fbd8,1,ffff80002f0f1118) at pool_do_get+0x2dc pool_update_curpage sys/kern/subr_pool.c:1059 [inline]
pool_do_get(ffffffff82e4fbd8,1,ffff80002f0f1118) at pool_do_get+0x2dc sys/kern/subr_pool.c:765
pool_get(ffffffff82e4fbd8,1) at pool_get+0xf0 sys/kern/subr_pool.c:582
pmap_create() at pmap_create+0x144 sys/arch/amd64/amd64/pmap.c:1369
uvmspace_fork(ffff8000ffffb0e0) at uvmspace_fork+0x64 uvmspace_init sys/uvm/uvm_map.c:3302 [inline]
uvmspace_fork(ffff8000ffffb0e0) at uvmspace_fork+0x64 uvmspace_alloc sys/uvm/uvm_map.c:3280 [inline]
uvmspace_fork(ffff8000ffffb0e0) at uvmspace_fork+0x64 sys/uvm/uvm_map.c:3852
process_new(ffff8000ffff6540,ffff8000ffffb0e0,1) at process_new+0x3dc sys/kern/kern_fork.c:278
fork1(ffff80002d6af228,1,ffffffff821ef240,0,ffff80002f0f13a0,0) at fork1+0x2ef sys/kern/kern_fork.c:399
syscall(ffff80002f0f1450) at syscall+0x854 mi_syscall sys/sys/syscall_mi.h:180 [inline]
syscall(ffff80002f0f1450) at syscall+0x854 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7212c53b6840, count: -8
ddb{1}> show registers
rdi 0x1
rsi 0xffffffff82e4fc40 pmap_pdp_pool+0x68
rbp 0xffff80002f0f10a0
rbx 0xfffffd806d188900
rdx 0
rcx 0xffff80002d6af228
rax 0
r8 0x7f8
r9 0
r10 0xb1172d297851f0ce
r11 0x8f9271219c908e3d
r12 0x1
r13 0x1
r14 0xffffffff82e4fbd8 pmap_pdp_pool
r15 0x8
rip 0xffffffff810672dc pool_do_get+0x2dc
cs 0x8
rflags 0x10246 __ALIGN_SIZE+0xf246
rsp 0xffff80002f0f1020
ss 0x10
pool_do_get+0x2dc: movq 0(%rax),%rax
ddb{1}> show proc
PROC (syz-executor.2) tid=25884 pid=91795 tcnt=1 stat=onproc
flags process=8000002<EXEC> proc=0
runpri=17, usrpri=76, slppri=17, nice=20
wchan=0x0, wmesg=, ps_single=0x0
forw=0xffffffffffffffff, list=0xffff80002f0c3220,0xffff80002f0c2fa0
process=0xffff8000ffffb0e0 user=0xffff80002f0ec000, vmspace=0xfffffd806efd2a58
estcpu=36, cpticks=17, pctcpu=0.0, user=0, sys=1, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
46412 185024 32690 0 2 0x8000000 syz-executor.1
42011 147207 39997 0 2 0x8000000 syz-executor.0
42011 370747 39997 0 3 0xc000080 fsleep syz-executor.0
23565 22275 97482 0 2 0x8000000 syz-executor.5
23565 144590 97482 0 3 0xc000080 lockf syz-executor.5
68931 5367 36256 0 3 0x8000080 nanoslp syz-executor.3
68931 59141 36256 0 3 0xc000080 netcon2 syz-executor.3
68931 476336 36256 0 3 0xc000080 fsleep syz-executor.3
10981 412570 66577 0 3 0x8000080 nanoslp syz-executor.6
10981 120807 66577 0 3 0xc000080 sbwait syz-executor.6
10981 137146 66577 0 3 0xc000080 fsleep syz-executor.6
*91795 25884 39106 0 7 0x8000002 syz-executor.2
36256 146941 39106 0 3 0x8000082 nanoslp syz-executor.3
46071 411734 39106 0 2 0x8000002 syz-executor.4
77328 180548 1 0 3 0x18100083 ttyin getty
66577 426507 39106 0 2 0x8000482 syz-executor.6
32690 126665 39106 0 2 0x8000002 syz-executor.1
39997 290099 39106 0 2 0x8000482 syz-executor.0
95686 231302 39106 0 2 0x8000482 syz-executor.7
97482 355679 39106 0 2 0x8000482 syz-executor.5
48210 95987 0 0 3 0x14200 acct acct
7683 493745 0 0 3 0x14280 nfsidl nfsio
9560 454652 0 0 3 0x14280 nfsidl nfsio
74032 517257 0 0 3 0x14280 nfsidl nfsio
59184 58440 0 0 3 0x14280 nfsidl nfsio
97446 204541 0 0 3 0x14280 nfsidl nfsio
76813 190235 0 0 3 0x14280 nfsidl nfsio
96485 61997 0 0 3 0x14280 nfsidl nfsio
51546 119832 0 0 3 0x14280 nfsidl nfsio
40241 453489 0 0 3 0x14280 nfsidl nfsio
8983 162971 0 0 3 0x14280 nfsidl nfsio
45486 266845 0 0 3 0x14280 nfsidl nfsio
82726 372181 0 0 3 0x14280 nfsidl nfsio
7633 315016 0 0 3 0x14280 nfsidl nfsio
41608 210577 0 0 3 0x14280 nfsidl nfsio
23527 446738 0 0 3 0x14280 nfsidl nfsio
1745 330479 0 0 3 0x14280 nfsidl nfsio
90909 135693 0 0 3 0x14280 nfsidl nfsio
58996 391349 0 0 3 0x14280 nfsidl nfsio
52651 358953 0 0 3 0x14280 nfsidl nfsio
28490 288160 0 0 3 0x14280 nfsidl nfsio
71343 518736 0 0 3 0x14200 bored sosplice
39106 458427 33006 0 3 0x1a000082 thrsleep syz-fuzzer
39106 344772 33006 0 3 0x1e000082 nanoslp syz-fuzzer
39106 239872 33006 0 3 0x1e000082 wait syz-fuzzer
39106 399 33006 0 3 0x1e000082 wait syz-fuzzer
39106 485072 33006 0 3 0x1e000082 thrsleep syz-fuzzer
39106 316246 33006 0 3 0x1e000082 wait syz-fuzzer
39106 259060 33006 0 2 0x1e000002 syz-fuzzer
39106 126030 33006 0 3 0x1e000082 thrsleep syz-fuzzer
39106 68526 33006 0 3 0x1e000082 wait syz-fuzzer
39106 314526 33006 0 3 0x1e000082 wait syz-fuzzer
39106 298026 33006 0 3 0x1e000082 thrsleep syz-fuzzer
39106 513442 33006 0 3 0x1e000082 thrsleep syz-fuzzer
39106 203384 33006 0 3 0x1e000082 wait syz-fuzzer
39106 158185 33006 0 3 0x1e000082 wait syz-fuzzer
39106 483671 33006 0 3 0x1e000082 wait syz-fuzzer
39106 109507 33006 0 7 0x1e000002 syz-fuzzer
33006 174674 70527 0 3 0x810008a sigsusp ksh
70527 454210 7022 0 3 0x1800009a kqread sshd
7022 482014 1 0 3 0x18000088 kqread sshd
28564 506287 35951 74 3 0x19100092 bpf pflogd
35951 274177 1 0 3 0x18000080 sbwait pflogd
11289 312523 77953 73 3 0x19100090 kqread syslogd
77953 69456 1 0 3 0x18100082 sbwait syslogd
40656 176564 1 0 3 0x18100080 kqread resolvd
91359 297197 34489 77 3 0x18100092 kqread dhcpleased
43169 369946 34489 77 3 0x18100092 kqread dhcpleased
34489 84078 1 0 3 0x18000080 kqread dhcpleased
45269 427727 0 0 3 0x14200 bored smr
76514 138760 0 0 2 0x14200 zerothread
33440 519396 0 0 3 0x14200 aiodoned aiodoned
5874 427197 0 0 3 0x14200 syncer update
2619 389769 0 0 3 0x14200 cleaner cleaner
9635 154464 0 0 3 0x14200 reaper reaper
50000 316833 0 0 3 0x14200 pgdaemon pagedaemon
17544 323171 0 0 3 0x14200 bored viomb
75804 68208 0 0 3 0x40014200 acpi0 acpi0
78999 42723 0 0 3 0x40014200 idle1
37038 447924 0 0 3 0x14200 bored softnet3
71136 69021 0 0 3 0x14200 bored softnet2
45375 465833 0 0 3 0x14200 bored softnet1
97130 67138 0 0 2 0x14200 softnet0
58592 483088 0 0 3 0x14200 bored systqmp
80457 96004 0 0 3 0x14200 bored systq
96781 493171 0 0 3 0x14200 tmoslp softclockmp
70489 275716 0 0 3 0x40014200 tmoslp softclock
93622 188037 0 0 3 0x40014200 idle0
1 370921 0 0 3 0x8080082 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
CPU 1:
exclusive mutex pdppl r = 0 (0xffffffff82e4fbe8)
#0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x446 sys/kern/subr_witness.c:1187
#1 mtx_enter_try+0x103
#2 mtx_enter+0x4e sys/kern/kern_lock.c:266
#3 pool_get+0xc4 sys/kern/subr_pool.c:579
#4 pmap_create+0x144 sys/arch/amd64/amd64/pmap.c:1369
#5 uvmspace_fork+0x64 uvmspace_init sys/uvm/uvm_map.c:3302 [inline]
#5 uvmspace_fork+0x64 uvmspace_alloc sys/uvm/uvm_map.c:3280 [inline]
#5 uvmspace_fork+0x64 sys/uvm/uvm_map.c:3852
#6 process_new+0x3dc sys/kern/kern_fork.c:278
#7 fork1+0x2ef sys/kern/kern_fork.c:399
#8 syscall+0x854 mi_syscall sys/sys/syscall_mi.h:180 [inline]
#8 syscall+0x854 sys/arch/amd64/amd64/trap.c:577
#9 Xsyscall+0x128
Process 91795 (syz-executor.2) thread 0xffff80002d6af228 (25884)
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10206 6638K 6948K 166960K 12744 0
pcb 17 12K 12K 166960K 257 0
rtable 207 15K 16K 166960K 1278 0
pf 34 9K 10K 166960K 141 0
ifaddr 40 14K 16K 166960K 171 0
ifgroup 59 2K 3K 166960K 225 0
sysctl 3 0K 1K 166960K 8 0
counters 66 36K 37K 166960K 154 0
ioctlops 0 0K 4K 166960K 1602 0
iov 0 0K 33K 166960K 153 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1380 87K 87K 166960K 2622 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 9K 166960K 34 0
VM map 2 1K 1K 166960K 2 0
sem 12 0K 1K 166960K 172 0
dirhash 12 2K 2K 166960K 30 0
ACPI 1697 195K 286K 166960K 12548 0
file desc 16 57K 85K 166960K 2327 0
sigio 0 0K 0K 166960K 52 0
proc 70 91K 127K 166960K 1430 0
subproc 104 6K 7K 166960K 418 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 393 0
in_multi 77 5K 7K 166960K 460 0
ether_multi 1 0K 0K 166960K 14 0
mrt 1 0K 0K 166960K 7 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 91 413K 413K 166960K 91 0
exec 0 0K 1K 166960K 931 0
pfkey data 0 0K 0K 166960K 4 0
tdb 3 0K 0K 166960K 3 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 322 111K 132K 166960K 22203 0
UVM aobj 84 3K 3K 166960K 97 0
pinsyscall 40 80K 108K 166960K 4193 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 1K 166960K 169 0
NDP 13 0K 2K 166960K 121 0
temp 74 6816K 7312K 166960K 62954 0
kqueue 12 18K 26K 166960K 277 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 24 0 0 1 0 1 1 0 8 0
rtpcb 120 265 0 261 1 0 1 1 0 8 0
rtentry 112 422 0 332 4 0 4 4 0 8 0
unpcb 144 1787 0 1766 8 7 1 5 0 8 0
syncache 336 12 0 12 6 6 0 1 0 8 0
tcpqe 32 15 42 15 1 1 0 1 0 8 0
tcpcb 808 693 0 679 8 6 2 8 0 8 0
arp 120 89 0 72 1 0 1 1 0 8 0
inpcb 392 2335 0 2315 12 9 3 8 0 8 0
nd6 136 103 0 85 1 0 1 1 0 8 0
pkpcb 40 20 0 20 7 6 1 1 0 8 1
kcovpl 48 32 0 24 1 0 1 1 0 8 0
ppxss 1168 11 0 11 9 8 1 1 0 8 1
pool(0xffffffff82da0c78:ppxss): page inconsistency: page 0x0; 0 on list, 0 missing, 14 items per page
pffrag 232 14 0 9 1 0 1 1 0 482 0
pffrnode 88 14 0 9 1 0 1 1 0 8 0
pffrent 40 235 0 230 2 1 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
pfstitem 24 212 0 158 1 0 1 1 0 8 0
pfstkey 128 212 0 158 3 0 3 3 0 8 0
pfstate 376 212 0 158 8 0 8 8 0 8 0
pfrule 1344 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 1626 0 1254 41 16 25 33 0 8 1
art_table 32 1627 0 1254 5 1 4 5 0 8 0
art_node 16 417 0 335 1 0 1 1 0 8 0
sysvmsgpl 40 20 0 10 1 0 1 1 0 8 0
semupl 112 5 0 5 1 1 0 1 0 8 0
semapl 112 164 0 154 1 0 1 1 0 8 0
shmpl 112 94 0 13 3 0 3 3 0 8 0
dirhash 1024 29 0 12 3 0 3 3 0 8 0
dino2pl 256 4977 0 3456 96 0 96 96 0 8 0
ffsino 272 4977 0 3456 102 0 102 102 0 8 0
nchpl 144 8409 0 6662 67 1 66 67 0 8 0
uvmvnodes 80 5847 0 0 120 0 120 120 0 8 0
vnodes 216 5847 0 0 325 0 325 325 0 8 0
namei 1024 28751 0 28751 4 3 1 2 0 8 1
percpumem 16 91 0 44 1 0 1 1 0 8 0
vcpupl 3904 10 0 2 1 0 1 1 0 8 0
vmpool 696 12 0 4 1 0 1 1 0 8 0
kstatmem 264 114 0 88 3 0 3 3 0 8 0
scsiplug 72 9 0 9 5 5 0 1 0 8 0
scxspl 216 33722 0 33722 16 15 1 8 1 8 1
plimitpl 152 289 0 273 1 0 1 1 0 8 0
sigapl 424 2630 0 2560 10 1 9 9 0 8 0
futexpl 64 30584 0 30581 3 2 1 1 0 8 0
knotepl 120 420 0 0 11 0 11 11 0 8 0
kqueuepl 216 598 0 590 5 4 1 5 0 8 0
pipepl 320 468 0 440 4 1 3 4 0 8 0
fdescpl 496 2590 0 2561 5 0 5 5 0 8 0
filepl 152 14906 0 14651 21 10 11 20 0 8 0
lockfpl 104 530 0 526 1 0 1 1 0 8 0
lockfspl 48 230 0 227 1 0 1 1 0 8 0
sessionpl 144 50 0 33 1 0 1 1 0 8 0
pgrppl 48 94 0 77 1 0 1 1 0 8 0
ucredpl 104 2433 0 2419 1 0 1 1 0 8 0
zombiepl 144 2561 0 2560 1 0 1 1 0 8 0
processpl 1136 2630 0 2560 6 0 6 6 0 8 0
procpl 656 5031 0 4940 10 1 9 9 0 8 0
srpgc 96 20 0 20 5 4 1 1 0 8 1
sosppl 168 46 0 46 8 7 1 1 0 8 1
sockpl 664 4450 0 4407 23 18 5 17 0 8 1
mcl64k 65536 12 0 0 2 0 2 2 0 8 0
mcl16k 16384 8 0 0 1 0 1 1 0 8 0
mcl12k 12288 8 0 0 1 0 1 1 0 8 0
mcl9k 9216 3 0 0 1 0 1 1 0 8 0
mcl8k 8192 12 0 0 2 0 2 2 0 8 0
mcl4k 4096 23 0 0 3 0 3 3 0 8 0
mcl2k2 2112 9 0 0 1 0 1 1 0 8 0
mcl2k 2048 315 0 0 39 1 38 39 0 8 0
mtagpl 96 21 0 0 1 0 1 1 0 8 0
mbufpl 256 1305 0 0 74 0 74 74 0 8 0
pool(0xffffffff82e2e178:mbufpl): page inconsistency: page 0x0; 0 on list, 0 missing, 16 items per page
pool(0xffffffff82e2e178:mbufpl): page inconsistency: page 0x0; 0 on list, 0 missing, 16 items per page
bufpl 280 9207 0 2952 447 0 447 447 0 8 0
anonpl 24 431724 0 425290 112 44 68 71 0 186 6
amapchunkpl 152 70290 0 69618 62 23 39 42 0 158 9
amappl16 200 10464 0 10349 57 37 20 20 0 8 7
amappl15 192 18 0 18 2 2 0 1 0 8 0
amappl14 184 259 0 239 4 2 2 2 0 8 0
amappl13 176 17 0 17 2 2 0 1 0 8 0
amappl12 168 3652 0 3621 4 2 2 3 0 8 0
amappl11 160 55 0 41 1 0 1 1 0 8 0
amappl10 152 69 0 60 1 0 1 1 0 8 0
amappl9 144 196 0 195 2 1 1 1 0 8 0
amappl8 136 524 0 428 5 0 5 5 0 8 0
amappl7 128 106 0 90 1 0 1 1 0 8 0
amappl6 120 730 0 704 2 0 2 2 0 8 0
amappl5 112 303 0 288 1 0 1 1 0 8 0
amappl4 104 841 0 786 3 1 2 3 0 8 0
amappl3 96 13802 0 13717 3 0 3 3 0 8 0
amappl2 88 3171 0 3092 4 2 2 4 0 8 0
amappl1 80 19293 0 18745 23 10 13 23 0 8 0
amappl 88 21226 0 21029 6 0 6 6 0 92 0
dma4096 4096 1 0 1 1 1 0 1 0 8 0
dma1024 1024 1 0 0 1 0 1 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 72 96 0 13 2 0 2 2 0 8 0
uaddrrnd 24 2601 0 2565 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 2601 0 2565 1 0 1 1 0 8 0
vmmpekpl 168 21907 0 21838 4 0 4 4 0 8 0
vmmpepl 168 180827 0 178794 158 49 109 121 0 357 1
vmsppl 440 2601 0 2565 6 1 5 5 0 8 0
rwobjpl 56 55040 0 47868 103 1 102 102 0 8 0
pdppl 4096 5210 0 5138 240 164 76 79 0 8 3
pool(0xffffffff82e4fbd8:pdppl): page inconsistency: page 0x60c500000000; 0 on list, 0 missing, 1 items per page
pool(0xffffffff82e4fbd8:pdppl): page inconsistency: page 0x2000; 0 on list, 0 missing, 1 items per page
pvpl 32 49242 0 0 398 0 398 398 0 265 0
pmappl 248 2601 0 2565 4 1 3 3 0 8 0
extentpl 40 56 0 38 1 0 1 1 0 8 0
phpool 112 634 0 206 13 0 13 13 0 8 0
phpool: pool(0xffffffff82d62010:phpool): page inconsistency: page 0x0; at page head addr 0xfffffd806488bf90 (p 0xfffffd806488b000)
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp
x86_ipi_db(ffffffff82d27ff0) at x86_ipi_db+0x1e sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x44 sys/dev/kcov.c:164
intr_handler(ffff8000373b0d40,ffff80000067b300) at intr_handler+0x62 sys/arch/amd64/amd64/intr.c:539
Xintr_ioapic_edge26_untramp() at Xintr_ioapic_edge26_untramp+0x18f
__sanitizer_cov_trace_const_cmp8(fffffd806f03f6c0,ffff8000373b1188) at __sanitizer_cov_trace_const_cmp8+0xf sys/dev/kcov.c:240
kqueue_scan(ffff8000373b0f80,8,ffff8000373b1080,ffff8000373b1188,ffff80002d6af9d8,ffff8000373b11c8) at kqueue_scan+0x1bc sys/kern/kern_event.c:1394
sys_kevent(ffff80002d6af9d8,ffff8000373b1310,ffff8000373b1260) at sys_kevent+0x567 sys/kern/kern_event.c:1062
syscall(ffff8000373b1310) at syscall+0x8cf mi_syscall sys/sys/syscall_mi.h:180 [inline]
syscall(ffff8000373b1310) at syscall+0x8cf sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x2650baa10, count: 4
ddb{0}> trace
x86_ipi_db(ffffffff82d27ff0) at x86_ipi_db+0x1e sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x44 sys/dev/kcov.c:164
intr_handler(ffff8000373b0d40,ffff80000067b300) at intr_handler+0x62 sys/arch/amd64/amd64/intr.c:539
Xintr_ioapic_edge26_untramp() at Xintr_ioapic_edge26_untramp+0x18f
__sanitizer_cov_trace_const_cmp8(fffffd806f03f6c0,ffff8000373b1188) at __sanitizer_cov_trace_const_cmp8+0xf sys/dev/kcov.c:240
kqueue_scan(ffff8000373b0f80,8,ffff8000373b1080,ffff8000373b1188,ffff80002d6af9d8,ffff8000373b11c8) at kqueue_scan+0x1bc sys/kern/kern_event.c:1394
sys_kevent(ffff80002d6af9d8,ffff8000373b1310,ffff8000373b1260) at sys_kevent+0x567 sys/kern/kern_event.c:1062
syscall(ffff8000373b1310) at syscall+0x8cf mi_syscall sys/sys/syscall_mi.h:180 [inline]
syscall(ffff8000373b1310) at syscall+0x8cf sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x2650baa10, count: -11
ddb{0}> machine ddbcpu 1
Stopped at pool_do_get+0x2dc: movq 0(%rax),%rax
pool_do_get(ffffffff82e4fbd8,1,ffff80002f0f1118) at pool_do_get+0x2dc pool_update_curpage sys/kern/subr_pool.c:1059 [inline]
pool_do_get(ffffffff82e4fbd8,1,ffff80002f0f1118) at pool_do_get+0x2dc sys/kern/subr_pool.c:765
pool_get(ffffffff82e4fbd8,1) at pool_get+0xf0 sys/kern/subr_pool.c:582
pmap_create() at pmap_create+0x144 sys/arch/amd64/amd64/pmap.c:1369
uvmspace_fork(ffff8000ffffb0e0) at uvmspace_fork+0x64 uvmspace_init sys/uvm/uvm_map.c:3302 [inline]
uvmspace_fork(ffff8000ffffb0e0) at uvmspace_fork+0x64 uvmspace_alloc sys/uvm/uvm_map.c:3280 [inline]
uvmspace_fork(ffff8000ffffb0e0) at uvmspace_fork+0x64 sys/uvm/uvm_map.c:3852
process_new(ffff8000ffff6540,ffff8000ffffb0e0,1) at process_new+0x3dc sys/kern/kern_fork.c:278
fork1(ffff80002d6af228,1,ffffffff821ef240,0,ffff80002f0f13a0,0) at fork1+0x2ef sys/kern/kern_fork.c:399
syscall(ffff80002f0f1450) at syscall+0x854 mi_syscall sys/sys/syscall_mi.h:180 [inline]
syscall(ffff80002f0f1450) at syscall+0x854 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7212c53b6840, count: 7
ddb{1}> trace
pool_do_get(ffffffff82e4fbd8,1,ffff80002f0f1118) at pool_do_get+0x2dc pool_update_curpage sys/kern/subr_pool.c:1059 [inline]
pool_do_get(ffffffff82e4fbd8,1,ffff80002f0f1118) at pool_do_get+0x2dc sys/kern/subr_pool.c:765
pool_get(ffffffff82e4fbd8,1) at pool_get+0xf0 sys/kern/subr_pool.c:582
pmap_create() at pmap_create+0x144 sys/arch/amd64/amd64/pmap.c:1369
uvmspace_fork(ffff8000ffffb0e0) at uvmspace_fork+0x64 uvmspace_init sys/uvm/uvm_map.c:3302 [inline]
uvmspace_fork(ffff8000ffffb0e0) at uvmspace_fork+0x64 uvmspace_alloc sys/uvm/uvm_map.c:3280 [inline]
uvmspace_fork(ffff8000ffffb0e0) at uvmspace_fork+0x64 sys/uvm/uvm_map.c:3852
process_new(ffff8000ffff6540,ffff8000ffffb0e0,1) at process_new+0x3dc sys/kern/kern_fork.c:278
fork1(ffff80002d6af228,1,ffffffff821ef240,0,ffff80002f0f13a0,0) at fork1+0x2ef sys/kern/kern_fork.c:399
syscall(ffff80002f0f1450) at syscall+0x854 mi_syscall sys/sys/syscall_mi.h:180 [inline]
syscall(ffff80002f0f1450) at syscall+0x854 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7212c53b6840, count: -8