uvm_fault(0xfffffd8069ddecc8, 0x0, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at fifo_read+0x3b: movq 0(%rax),%rax
TID PID UID PRFLAGS PFLAGS CPU COMMAND
488721 92601 32767 0x10 0 0 syz-executor.6
*323287 92601 32767 0x10 0x4000000 1K syz-executor.6
fifo_read(ffff800026b38a30) at fifo_read+0x3b sys/miscfs/fifofs/fifo_vnops.c:240
VOP_READ(fffffd8074c82a60,ffff800026b38ac0,0,fffffd807f7d62d8) at VOP_READ+0xc3 sys/kern/vfs_vops.c:227
uvn_io(fffffd805c811100,ffff800026b38bd0,1,202,0) at uvn_io+0x3a7
uvn_get(fffffd805c811100,ffff000000000000,ffff800026b38c98,ffff800026b38c68,0,1,2825147444dd93cf,0) at uvn_get+0x1df sys/uvm/uvm_vnode.c:1110
uvm_fault_lower(ffff800026b38e00,ffff800026b38e38,ffff800026b38d80,0) at uvm_fault_lower+0x361 sys/uvm/uvm_fault.c:1284
uvm_fault(fffffd8069ddecc8,20000000,0,1) at uvm_fault+0x238
kpageflttrap(ffff800026b38fa0,20000180) at kpageflttrap+0x252 sys/arch/amd64/amd64/trap.c:279
kerntrap(ffff800026b38fa0) at kerntrap+0xf3 sys/arch/amd64/amd64/trap.c:332
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
_copyinstr() at _copyinstr+0x58
namei(ffff800026b39358) at namei+0x133 sys/kern/vfs_lookup.c:156
vn_open(ffff800026b39358,70f,0) at vn_open+0x17b sys/kern/vfs_vnops.c:107
doopenat(ffff8000211f7d38,ffffff9c,20000180,70e,0,ffff800026b39530) at doopenat+0x26e sys/kern/vfs_syscalls.c:1126
syscall(ffff800026b395b0) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline]
syscall(ffff800026b395b0) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623
end trace frame: 0xffff800026b39630, 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{1}>
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
*cpu1: uvm_fault(0xfffffd8069ddecc8, 0x0, 0, 1) -> e
ddb{1}> trace
fifo_read(ffff800026b38a30) at fifo_read+0x3b sys/miscfs/fifofs/fifo_vnops.c:240
VOP_READ(fffffd8074c82a60,ffff800026b38ac0,0,fffffd807f7d62d8) at VOP_READ+0xc3 sys/kern/vfs_vops.c:227
uvn_io(fffffd805c811100,ffff800026b38bd0,1,202,0) at uvn_io+0x3a7
uvn_get(fffffd805c811100,ffff000000000000,ffff800026b38c98,ffff800026b38c68,0,1,2825147444dd93cf,0) at uvn_get+0x1df sys/uvm/uvm_vnode.c:1110
uvm_fault_lower(ffff800026b38e00,ffff800026b38e38,ffff800026b38d80,0) at uvm_fault_lower+0x361 sys/uvm/uvm_fault.c:1284
uvm_fault(fffffd8069ddecc8,20000000,0,1) at uvm_fault+0x238
kpageflttrap(ffff800026b38fa0,20000180) at kpageflttrap+0x252 sys/arch/amd64/amd64/trap.c:279
kerntrap(ffff800026b38fa0) at kerntrap+0xf3 sys/arch/amd64/amd64/trap.c:332
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
_copyinstr() at _copyinstr+0x58
namei(ffff800026b39358) at namei+0x133 sys/kern/vfs_lookup.c:156
vn_open(ffff800026b39358,70f,0) at vn_open+0x17b sys/kern/vfs_vnops.c:107
doopenat(ffff8000211f7d38,ffffff9c,20000180,70e,0,ffff800026b39530) at doopenat+0x26e sys/kern/vfs_syscalls.c:1126
syscall(ffff800026b395b0) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline]
syscall(ffff800026b395b0) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xa3ccc0de0d0, count: -15
ddb{1}> show registers
rdi 0xffff800026b38a30
rsi 0x1
rbp 0xffff800026b38a20
rbx 0x1
rdx 0
rcx 0xffff8000211f7d38
rax 0
r8 0
r9 0
r10 0x8dd41ae0255ff6c
r11 0xc86c5b720924bdaa
r12 0xfffffd8074c82a60
r13 0xffff800026b38ac0
r14 0xffff800026b38a30
r15 0xffff800026b38ac0
rip 0xffffffff8267728b fifo_read+0x3b
cs 0x8
rflags 0x10246 __ALIGN_SIZE+0xf246
rsp 0xffff800026b389c0
ss 0x10
fifo_read+0x3b: movq 0(%rax),%rax
ddb{1}> show proc
PROC (syz-executor.6) tid=323287 pid=92601 tcnt=3 stat=onproc
flags process=10<SUGID> proc=4000000<THREAD>
runpri=32, usrpri=82, slppri=32, nice=20
wchan=0x0, wmesg=, ps_single=0x0
forw=0xffffffffffffffff, list=0xffff8000211f62a8,0xffff8000211f7000
process=0xffff8000ffff90c8 user=0xffff800026b34000, vmspace=0xfffffd8069ddecc8
estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
73505 56354 13478 32767 2 0x10 syz-executor.2
92601 488721 87503 32767 7 0x10 syz-executor.6
92601 161340 87503 32767 2 0x4000010 syz-executor.6
*92601 323287 87503 32767 7 0x4000010 syz-executor.6
31916 299615 5616 32767 3 0x90 nanoslp syz-executor.4
31916 179557 5616 32767 3 0x4000090 fsleep syz-executor.4
31916 385624 5616 32767 3 0x4000090 fsleep syz-executor.4
52580 259050 11586 32767 3 0x90 nanoslp syz-executor.7
52580 390467 11586 32767 3 0x4000090 kqread syz-executor.7
52580 4013 11586 32767 3 0x4000090 fsleep syz-executor.7
13478 313881 36712 32767 3 0x90 nanoslp syz-executor.2
36712 409934 61493 0 3 0x82 wait syz-executor.2
7615 292657 29303 32767 3 0x90 nanoslp syz-executor.0
29303 204496 61493 0 3 0x82 wait syz-executor.0
11586 198605 8087 32767 3 0x90 nanoslp syz-executor.7
8087 92596 61493 0 3 0x82 wait syz-executor.7
93435 399596 24724 32767 3 0x90 nanoslp syz-executor.5
24724 350101 61493 0 3 0x82 wait syz-executor.5
35200 171170 99842 32767 3 0x10 biowait syz-executor.1
99842 480734 61493 0 3 0x82 wait syz-executor.1
87503 159645 88398 32767 3 0x90 nanoslp syz-executor.6
88398 241470 61493 0 3 0x82 wait syz-executor.6
5616 197843 11512 32767 3 0x90 nanoslp syz-executor.4
11512 295710 61493 0 3 0x82 wait syz-executor.4
60302 81286 73743 32767 3 0x10 biowait syz-executor.3
73743 200015 61493 0 3 0x82 wait syz-executor.3
55217 199156 0 0 3 0x14200 bored sosplice
61493 231540 22938 0 3 0x2000082 kqread syz-fuzzer
61493 178398 22938 0 3 0x6000082 nanoslp syz-fuzzer
61493 90423 22938 0 3 0x6000082 thrsleep syz-fuzzer
61493 385903 22938 0 3 0x6000082 wait syz-fuzzer
61493 66097 22938 0 3 0x6000082 thrsleep syz-fuzzer
61493 275461 22938 0 3 0x6000082 thrsleep syz-fuzzer
61493 82735 22938 0 3 0x6000082 wait syz-fuzzer
61493 51022 22938 0 3 0x6000082 thrsleep syz-fuzzer
61493 143891 22938 0 3 0x6000082 wait syz-fuzzer
61493 9820 22938 0 3 0x6000082 thrsleep syz-fuzzer
61493 253073 22938 0 3 0x6000082 thrsleep syz-fuzzer
61493 151654 22938 0 3 0x6000082 wait syz-fuzzer
61493 193235 22938 0 3 0x6000082 wait syz-fuzzer
61493 86507 22938 0 3 0x6000082 wait syz-fuzzer
61493 459565 22938 0 3 0x6000082 wait syz-fuzzer
61493 180038 22938 0 3 0x6000082 wait syz-fuzzer
22938 294157 10229 0 3 0x10008a sigsusp ksh
10229 463055 75242 0 3 0x9a kqread sshd
47873 119974 1 0 3 0x100083 ttyin getty
75242 336507 1 0 3 0x88 kqread sshd
16111 200147 76078 73 3 0x1100090 kqread syslogd
76078 291345 1 0 3 0x100082 netio syslogd
67335 117791 1 0 3 0x100080 kqread resolvd
50261 193425 89825 77 3 0x100092 kqread dhcpleased
25322 17654 89825 77 3 0x100092 kqread dhcpleased
89825 374235 1 0 3 0x80 kqread dhcpleased
29518 289147 0 0 3 0x14200 bored smr
4743 3631 0 0 2 0x14200 zerothread
65258 458553 0 0 3 0x14200 aiodoned aiodoned
6347 184128 0 0 3 0x14200 syncer update
55107 38925 0 0 3 0x14200 cleaner cleaner
5895 64678 0 0 3 0x14200 reaper reaper
93102 338758 0 0 3 0x14200 pgdaemon pagedaemon
51940 248670 0 0 3 0x14200 bored viomb
55461 26165 0 0 3 0x40014200 acpi0 acpi0
7576 361538 0 0 3 0x40014200 idle1
74648 261631 0 0 3 0x14200 bored softnet3
44443 268980 0 0 3 0x14200 bored softnet2
46541 256521 0 0 3 0x14200 bored softnet1
77158 265520 0 0 3 0x14200 bored softnet0
78930 418008 0 0 3 0x14200 bored systqmp
93129 489105 0 0 3 0x14200 bored systq
67012 497834 0 0 3 0x14200 tmoslp softclockmp
33531 325011 0 0 3 0x40014200 tmoslp softclock
90414 385936 0 0 3 0x40014200 idle0
1 104880 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
Process 92601 (syz-executor.6) thread 0xffff8000211f7d38 (323287)
exclusive rrwlock inode r = 0 (0xfffffd8062f00f88)
#0 witness_lock+0x447
#1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309
#2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464
#3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518
#4 vn_lock+0x84 sys/kern/vfs_vnops.c:564
#5 uvn_io+0x317 sys/uvm/uvm_vnode.c:1263
#6 uvn_get+0x1df sys/uvm/uvm_vnode.c:1110
#7 uvm_fault_lower+0x361 sys/uvm/uvm_fault.c:1284
#8 uvm_fault+0x238
#9 kpageflttrap+0x252 sys/arch/amd64/amd64/trap.c:279
#10 kerntrap+0xf3 sys/arch/amd64/amd64/trap.c:332
#11 alltraps_kern_meltdown+0x7b
#12 _copyinstr+0x58
#13 namei+0x133 sys/kern/vfs_lookup.c:156
#14 vn_open+0x17b sys/kern/vfs_vnops.c:107
#15 doopenat+0x26e sys/kern/vfs_syscalls.c:1126
#16 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline]
#16 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623
#17 Xsyscall+0x128
exclusive kernel_lock &kernel_lock r = 1 (0xffffffff82d1aa78)
#0 witness_lock+0x447
#1 syscall+0x5cd mi_syscall sys/sys/syscall_mi.h:110 [inline]
#1 syscall+0x5cd sys/arch/amd64/amd64/trap.c:623
#2 Xsyscall+0x128
Process 35200 (syz-executor.1) thread 0xffff80002121a2c8 (171170)
exclusive rrwlock inode r = 0 (0xfffffd805b8393d8)
#0 witness_lock+0x447
#1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309
#2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464
#3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518
#4 vn_lock+0x84 sys/kern/vfs_vnops.c:564
#5 vget+0x200 sys/kern/vfs_subr.c:676
#6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119
#7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1314
#8 ufs_lookup+0x13ba sys/ufs/ufs/ufs_lookup.c:487
#9 VOP_LOOKUP+0x5c sys/kern/vfs_vops.c:85
#10 vfs_lookup+0x6e2 sys/kern/vfs_lookup.c:566
#11 namei+0x55a sys/kern/vfs_lookup.c:250
#12 dounlinkat+0x9d sys/kern/vfs_syscalls.c:1847
#13 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline]
#13 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623
#14 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd80639bc3d0)
#0 witness_lock+0x447
#1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309
#2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464
#3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518
#4 vn_lock+0x84 sys/kern/vfs_vnops.c:564
#5 vfs_lookup+0xd5 sys/kern/vfs_lookup.c:418
#6 namei+0x55a sys/kern/vfs_lookup.c:250
#7 dounlinkat+0x9d sys/kern/vfs_syscalls.c:1847
#8 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline]
#8 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623
#9 Xsyscall+0x128
Process 60302 (syz-executor.3) thread 0xffff8000211e52b0 (81286)
exclusive rrwlock inode r = 0 (0xfffffd807e8ca1b8)
#0 witness_lock+0x447
#1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309
#2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464
#3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518
#4 vn_lock+0x84 sys/kern/vfs_vnops.c:564
#5 vget+0x200 sys/kern/vfs_subr.c:676
#6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119
#7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1314
#8 ufs_lookup+0x13ba sys/ufs/ufs/ufs_lookup.c:487
#9 VOP_LOOKUP+0x5c sys/kern/vfs_vops.c:85
#10 vfs_lookup+0x6e2 sys/kern/vfs_lookup.c:566
#11 namei+0x55a sys/kern/vfs_lookup.c:250
#12 dounlinkat+0x9d sys/kern/vfs_syscalls.c:1847
#13 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline]
#13 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623
#14 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd8062f00708)
#0 witness_lock+0x447
#1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309
#2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464
#3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518
#4 vn_lock+0x84 sys/kern/vfs_vnops.c:564
#5 vfs_lookup+0xd5 sys/kern/vfs_lookup.c:418
#6 namei+0x55a sys/kern/vfs_lookup.c:250
#7 dounlinkat+0x9d sys/kern/vfs_syscalls.c:1847
#8 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline]
#8 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623
#9 Xsyscall+0x128
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10219 6413K 6421K 78643K 11812 0
pcb 13 20K 24K 78643K 21 0
rtable 236 6K 7K 78643K 7712 0
pf 29 8K 8K 78643K 371 0
ifaddr 44 17K 18K 78643K 738 0
ifgroup 50 2K 2K 78643K 734 0
sysctl 4 1K 3K 78643K 21 0
counters 62 36K 36K 78643K 404 0
ioctlops 0 0K 2K 78643K 458 0
iov 0 0K 32K 78643K 6559 0
mount 1 1K 1K 78643K 1 0
log 0 0K 0K 78643K 4 0
vnodes 1279 80K 80K 78643K 12660 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 9K 78643K 898 0
VM map 2 1K 1K 78643K 2 0
sem 12 0K 0K 78643K 25458 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1697 195K 286K 78643K 12548 0
file desc 22 81K 125K 78643K 56769 0
sigio 0 0K 0K 78643K 926 0
proc 56 78K 103K 78643K 8135 0
subproc 104 6K 6K 78643K 2327 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 3751 0
in_multi 99 7K 7K 78643K 2412 0
ether_multi 1 0K 0K 78643K 53 0
mrt 1 0K 0K 78643K 1 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 235 1049K 1049K 78643K 235 0
exec 0 0K 1K 78643K 10083 0
tdb 3 0K 0K 78643K 3 0
pagedep 1 8K 8K 78643K 1 0
inodedep 1 32K 32K 78643K 1 0
newblk 1 0K 0K 78643K 1 0
VM swap 8 62K 64K 78643K 10 0
UVM amap 487 89K 112K 78643K 555843 0
UVM aobj 131 4K 5K 78643K 145 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 1135 0
NDP 11 0K 2K 78643K 540 0
temp 74 5924K 6052K 78643K 147388 0
kqueue 12 18K 29K 78643K 3580 0
SYN cache 2 16K 16K 78643K 2 0
ddb{1}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
plcache 128 22 0 0 1 0 1 1 0 8 0
rtpcb 120 3132 0 3129 40 39 1 3 0 8 0
rtentry 112 2106 0 1995 4 0 4 4 0 8 0
unpcb 144 39627 0 39614 364 361 3 11 0 8 2
syncache 312 666 0 666 100 99 1 1 0 8 1
sackhl 24 1 0 1 1 1 0 1 0 8 0
tcpqe 32 808 0 808 92 91 1 1 0 8 1
tcpcb 808 22237 0 22207 474 466 8 20 0 8 3
arp 120 373 0 354 1 0 1 1 0 8 0
ipq 40 114 0 112 32 31 1 1 0 8 0
ipqe 40 671 0 667 32 31 1 1 0 8 0
inpcb 368 41942 0 41903 520 510 10 22 0 8 4
nd6 136 638 0 614 8 7 1 2 0 8 0
kcovpl 48 179 0 171 1 0 1 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 8443 0 7980 43 13 30 32 0 8 0
art_table 32 8444 0 7980 5 1 4 5 0 8 0
art_node 16 2105 0 2004 1 0 1 1 0 8 0
sysvmsgpl 40 7 0 6 2 1 1 1 0 8 0
semapl 112 25456 0 25446 1 0 1 1 0 8 0
shmpl 112 142 0 14 4 0 4 4 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 84399 0 82882 95 0 95 95 0 8 0
ffsino 272 84399 0 82882 102 0 102 102 0 8 0
nchpl 144 168343 0 166700 63 0 63 63 0 8 0
uvmvnodes 80 7225 0 0 148 0 148 148 0 8 0
vnodes 216 7225 0 0 402 0 402 402 0 8 0
namei 1024 574448 0 574447 20 19 1 2 0 8 0
percpumem 16 215 0 171 1 0 1 1 0 8 0
kstatmem 264 364 0 342 2 0 2 2 0 8 0
scxspl 216 496727 0 496725 201 199 2 8 1 8 1
plimitpl 152 9235 0 9212 68 66 2 2 0 8 1
sigapl 424 56721 0 56667 7 0 7 7 0 8 0
futexpl 64 481870 0 481867 15 14 1 1 0 8 0
knotepl 120 2605 0 0 22 4 18 18 0 8 0
kqueuepl 216 13120 0 13111 227 224 3 8 0 8 2
pipepl 320 13900 0 13872 284 276 8 11 0 8 5
fdescpl 496 56702 0 56669 9 4 5 6 0 8 0
filepl 152 404724 0 404485 538 523 15 21 0 8 5
lockfpl 104 7059 0 7056 4 3 1 2 0 8 0
lockfspl 48 2019 0 2016 1 0 1 1 0 8 0
sessionpl 144 194 0 178 1 0 1 1 0 8 0
pgrppl 48 1032 0 1016 1 0 1 1 0 8 0
ucredpl 104 53568 0 53550 1 0 1 1 0 8 0
zombiepl 144 56669 0 56667 2 1 1 1 0 8 0
processpl 1072 56721 0 56667 5 1 4 5 0 8 0
procpl 680 157541 0 157466 81 73 8 8 0 8 0
sosppl 168 692 0 689 52 51 1 1 0 8 0
sockpl 488 87375 0 87322 1391 1376 15 41 0 8 6
mcl64k 65536 81 0 0 5 2 3 3 0 8 0
mcl16k 16384 53 0 0 5 2 3 3 0 8 0
mcl12k 12288 42 0 0 2 0 2 2 0 8 0
mcl9k 9216 25 0 0 2 0 2 2 0 8 0
mcl8k 8192 89 0 0 4 1 3 4 0 8 0
mcl4k 4096 121 0 0 5 2 3 4 0 8 0
mcl2k2 2112 33 0 0 2 0 2 2 0 8 0
mcl2k 2048 935 0 0 44 24 20 37 0 8 0
mtagpl 96 16 0 0 1 0 1 1 0 8 0
mbufpl 256 3579 0 0 131 2 129 131 0 8 0
bufpl 288 100254 0 93028 517 0 517 517 0 8 0
anonpl 24 5185414 0 5173628 296 184 112 133 0 186 9
amapchunkpl 152 1774400 0 1773585 469 430 39 57 0 158 1
amappl16 200 93954 0 93644 363 341 22 42 0 8 0
amappl15 192 10 0 10 2 2 0 1 0 8 0
amappl14 184 707 0 691 2 1 1 2 0 8 0
amappl13 176 36 0 36 11 11 0 1 0 8 0
amappl12 168 59933 0 59893 4 2 2 3 0 8 0
amappl11 160 74 0 63 1 0 1 1 0 8 0
amappl10 152 208 0 196 1 0 1 1 0 8 0
amappl9 144 772 0 771 1 0 1 1 0 8 0
amappl8 136 2660 0 2365 12 1 11 11 0 8 0
amappl7 128 911 0 885 2 0 2 2 0 8 0
amappl6 120 3574 0 3541 2 0 2 2 0 8 0
amappl5 112 1396 0 1387 1 0 1 1 0 8 0
amappl4 104 2938 0 2895 4 2 2 2 0 8 0
amappl3 96 340405 0 340316 48 44 4 4 0 8 0
amappl2 88 60517 0 60431 23 20 3 3 0 8 0
amappl1 80 216793 0 216266 22 9 13 22 0 8 0
amappl 88 551719 0 551481 9 2 7 7 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 72 144 0 14 3 0 3 3 0 8 0
uaddrrnd 24 56702 0 56669 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 56702 0 56669 1 0 1 1 0 8 0
vmmpekpl 168 429386 0 429321 4 0 4 4 0 8 0
vmmpepl 168 3358350 0 3355787 490 352 138 174 0 357 0
vmsppl 464 56701 0 56669 6 1 5 6 0 8 0
rwobjpl 56 779837 0 770891 168 40 128 128 0 8 0
pdppl 4096 113412 0 113338 2332 2250 82 96 0 8 8
pvpl 32 16087750 0 16069668 911 675 236 343 0 265 54
pmappl 248 56701 0 56669 3 0 3 3 0 8 0
extentpl 40 56 0 38 1 0 1 1 0 8 0
phpool 112 4485 0 3465 30 0 30 30 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp
x86_ipi_db(ffffffff82bf9ff0) 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
intr_handler(ffff80002126b890,ffff80000007bd80) at intr_handler+0x62 sys/arch/amd64/amd64/intr.c:532
Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f
end of kernel
end trace frame: 0x7ded02e83720, count: 9
ddb{0}> trace
x86_ipi_db(ffffffff82bf9ff0) 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
intr_handler(ffff80002126b890,ffff80000007bd80) at intr_handler+0x62 sys/arch/amd64/amd64/intr.c:532
Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f
end of kernel
end trace frame: 0x7ded02e83720, count: -6
ddb{0}> machine ddbcpu 1
Stopped at fifo_read+0x3b: movq 0(%rax),%rax
fifo_read(ffff800026b38a30) at fifo_read+0x3b sys/miscfs/fifofs/fifo_vnops.c:240
VOP_READ(fffffd8074c82a60,ffff800026b38ac0,0,fffffd807f7d62d8) at VOP_READ+0xc3 sys/kern/vfs_vops.c:227
uvn_io(fffffd805c811100,ffff800026b38bd0,1,202,0) at uvn_io+0x3a7
uvn_get(fffffd805c811100,ffff000000000000,ffff800026b38c98,ffff800026b38c68,0,1,2825147444dd93cf,0) at uvn_get+0x1df sys/uvm/uvm_vnode.c:1110
uvm_fault_lower(ffff800026b38e00,ffff800026b38e38,ffff800026b38d80,0) at uvm_fault_lower+0x361 sys/uvm/uvm_fault.c:1284
uvm_fault(fffffd8069ddecc8,20000000,0,1) at uvm_fault+0x238
kpageflttrap(ffff800026b38fa0,20000180) at kpageflttrap+0x252 sys/arch/amd64/amd64/trap.c:279
kerntrap(ffff800026b38fa0) at kerntrap+0xf3 sys/arch/amd64/amd64/trap.c:332
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
_copyinstr() at _copyinstr+0x58
namei(ffff800026b39358) at namei+0x133 sys/kern/vfs_lookup.c:156
vn_open(ffff800026b39358,70f,0) at vn_open+0x17b sys/kern/vfs_vnops.c:107
doopenat(ffff8000211f7d38,ffffff9c,20000180,70e,0,ffff800026b39530) at doopenat+0x26e sys/kern/vfs_syscalls.c:1126
syscall(ffff800026b395b0) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline]
syscall(ffff800026b395b0) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623
end trace frame: 0xffff800026b39630, count: 0
ddb{1}> trace
fifo_read(ffff800026b38a30) at fifo_read+0x3b sys/miscfs/fifofs/fifo_vnops.c:240
VOP_READ(fffffd8074c82a60,ffff800026b38ac0,0,fffffd807f7d62d8) at VOP_READ+0xc3 sys/kern/vfs_vops.c:227
uvn_io(fffffd805c811100,ffff800026b38bd0,1,202,0) at uvn_io+0x3a7
uvn_get(fffffd805c811100,ffff000000000000,ffff800026b38c98,ffff800026b38c68,0,1,2825147444dd93cf,0) at uvn_get+0x1df sys/uvm/uvm_vnode.c:1110
uvm_fault_lower(ffff800026b38e00,ffff800026b38e38,ffff800026b38d80,0) at uvm_fault_lower+0x361 sys/uvm/uvm_fault.c:1284
uvm_fault(fffffd8069ddecc8,20000000,0,1) at uvm_fault+0x238
kpageflttrap(ffff800026b38fa0,20000180) at kpageflttrap+0x252 sys/arch/amd64/amd64/trap.c:279
kerntrap(ffff800026b38fa0) at kerntrap+0xf3 sys/arch/amd64/amd64/trap.c:332
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
_copyinstr() at _copyinstr+0x58
namei(ffff800026b39358) at namei+0x133 sys/kern/vfs_lookup.c:156
vn_open(ffff800026b39358,70f,0) at vn_open+0x17b sys/kern/vfs_vnops.c:107
doopenat(ffff8000211f7d38,ffffff9c,20000180,70e,0,ffff800026b39530) at doopenat+0x26e sys/kern/vfs_syscalls.c:1126
syscall(ffff800026b395b0) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline]
syscall(ffff800026b395b0) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xa3ccc0de0d0, count: -15