*cpu1: uvm_fault(0xfffffd806c71d5d0, 0x98, 0, 1) -> e
ddb{0}> trace
proc_trampoline() at proc_trampoline+0xc7
end of kernel
end trace frame: 0x7f4641aced10, count: -1
ddb{0}> show registers
rdi 0
rsi 0
rbp 0xffff80002a316890
rbx 0
rdx 0
rcx 0xffff8000333b1260
rax 0x2a
r8 0xffff80002a3167c0
r9 0
r10 0x4ec124ce7a85c586
r11 0x9f5340daa64a3391
r12 0
r13 0
r14 0
r15 0
rip 0xffffffff819aa4c7 proc_trampoline+0xc7
cs 0x8
rflags 0x246
rsp 0xffff80002a316810
ss 0
proc_trampoline+0xc7: movl $0,%gs:0x688
ddb{0}> show proc
PROC (syz-executor) tid=96251 pid=30007 tcnt=1 stat=onproc
flags process=0 proc=0
runpri=50, usrpri=86, slppri=17, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff8000333b0568,0xffffffff83983cb8
process=0xffff8000330621e0 user=0xffff80002a311000, vmspace=0xfffffd800b0633d0
estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=2, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
*30007 96251 74575 0 7 0 syz-executor
71195 374417 0 0 3 0x14280 nfsidl nfsio
84622 251698 0 0 3 0x14280 nfsidl nfsio
61208 261688 0 0 3 0x14280 nfsidl nfsio
30120 41632 0 0 3 0x14280 nfsidl nfsio
99832 292066 0 0 3 0x14280 nfsidl nfsio
42179 55883 0 0 3 0x14280 nfsidl nfsio
32730 205741 0 0 3 0x14280 nfsidl nfsio
65835 508925 0 0 3 0x14280 nfsidl nfsio
69269 436965 0 0 3 0x14280 nfsidl nfsio
76015 383754 0 0 3 0x14280 nfsidl nfsio
38863 9905 0 0 3 0x14280 nfsidl nfsio
48707 63233 0 0 3 0x14280 nfsidl nfsio
13811 69188 0 0 3 0x14280 nfsidl nfsio
83062 385116 0 0 3 0x14280 nfsidl nfsio
98806 308626 0 0 3 0x14280 nfsidl nfsio
35256 202616 0 0 3 0x14280 nfsidl nfsio
33092 58813 0 0 3 0x14280 nfsidl nfsio
92178 3176 0 0 3 0x14280 nfsidl nfsio
56800 217928 0 0 3 0x14280 nfsidl nfsio
58171 30503 0 0 3 0x14280 nfsidl nfsio
83490 120897 24542 0 2 0 syz-executor
83490 435220 24542 0 7 0x4000000 syz-executor
89206 439688 52283 0 2 0 syz-executor
89206 17298 52283 0 3 0x4000080 fsleep syz-executor
89206 250839 52283 0 3 0x4000080 fsleep syz-executor
83257 157798 2758 0 3 0x90 nanoslp syz-executor
83257 154919 2758 0 3 0x4000090 ttyin syz-executor
83257 395724 2758 0 3 0x4000090 fsleep syz-executor
83257 119490 2758 0 3 0x4000090 fsleep syz-executor
85630 259323 68311 0 2 0x2 syz-executor
24542 158178 68311 0 3 0x82 nanoslp syz-executor
74575 157024 68311 0 3 0x82 nanoslp syz-executor
51536 23657 68311 0 3 0x82 nanoslp syz-executor
2758 249793 68311 0 3 0x82 nanoslp syz-executor
52283 344780 68311 0 3 0x82 nanoslp syz-executor
60518 6106 68311 0 3 0x82 nanoslp syz-executor
55344 376793 68311 0 3 0x2 biowait syz-executor
68311 344630 13383 0 3 0x82 kqread syz-executor
13383 257515 22182 0 3 0x10008a sigsusp ksh
22182 66484 60944 0 3 0x98 kqread sshd-session
60944 439992 68453 0 3 0x92 kqread sshd-session
92359 198694 1 0 3 0x100083 ttyin getty
68453 197581 1 0 3 0x88 kqread sshd
81316 392784 16811 74 3 0x1100092 bpf pflogd
16811 500042 1 0 3 0x80 sbwait pflogd
35649 352960 73367 73 3 0x1100090 kqread syslogd
73367 281881 1 0 3 0x100082 sbwait syslogd
90329 349255 1 0 3 0x100080 kqread resolvd
40357 356775 92265 77 3 0x100092 kqread dhcpleased
44808 57307 92265 77 3 0x100092 kqread dhcpleased
92265 216902 1 0 3 0x80 kqread dhcpleased
64123 64069 0 0 3 0x14200 bored smr
18026 21469 0 0 2 0x14200 zerothread
422 321650 0 0 3 0x14200 aiodoned aiodoned
70906 349228 0 0 3 0x14200 syncer update
15465 182380 0 0 3 0x14200 cleaner cleaner
9279 31719 0 0 3 0x14200 reaper reaper
69463 255973 0 0 3 0x14200 pgdaemon pagedaemon
97602 495131 0 0 3 0x14200 bored viomb
8790 391467 0 0 3 0x40014200 acpi0 acpi0
55363 404901 0 0 3 0x40014200 idle1
97454 324652 0 0 3 0x14200 bored softnet1
43505 394504 0 0 3 0x14200 bored softnet0
7828 395770 0 0 3 0x14200 bored systqmp
36826 36406 0 0 3 0x14200 bored systq
28550 326247 0 0 3 0x14200 tmoslp softclockmp
8655 40322 0 0 3 0x40014200 tmoslp softclock
69311 351922 0 0 3 0x40014200 idle0
1 311559 0 0 3 0x82 wait init
0 0 -1 0 3 0x10010200 scheduler swapper
ddb{0}> show all locks
CPU 0:
exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806c712610)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 mtx_enter+0x4b4 sys/kern/kern_lock.c:487
#2 pmap_extract+0xb1 sys/arch/amd64/amd64/pmap.c:1575
#3 uvm_fault_upper_lookup+0x20b sys/uvm/uvm_fault.c:975
#4 uvm_fault+0x159 sys/uvm/uvm_fault.c:632
#5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
#6 usertrap+0x430 sys/arch/amd64/amd64/trap.c:640
#7 recall_trap+0x8
Process 30007 (syz-executor) thread 0xffff8000333b1260 (96251)
exclusive rwlock amaplk r = 0 (0xfffffd807c21e548)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320
#2 uvm_fault_check+0x8a9 sys/uvm/uvm_fault.c:834
#3 uvm_fault+0x106 sys/uvm/uvm_fault.c:627
#4 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
#5 usertrap+0x430 sys/arch/amd64/amd64/trap.c:640
#6 recall_trap+0x8
shared rwlock vmmaplk r = 0 (0xfffffd800b0634d0)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 rw_do_enter_read+0x3e8 sys/kern/kern_rwlock.c:413
#2 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1880
#3 uvm_fault_check+0x4f sys/uvm/uvm_fault.c:693
#4 uvm_fault+0x106 sys/uvm/uvm_fault.c:627
#5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
#6 usertrap+0x430 sys/arch/amd64/amd64/trap.c:640
#7 recall_trap+0x8
exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806c712610)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 mtx_enter+0x4b4 sys/kern/kern_lock.c:487
#2 pmap_extract+0xb1 sys/arch/amd64/amd64/pmap.c:1575
#3 uvm_fault_upper_lookup+0x20b sys/uvm/uvm_fault.c:975
#4 uvm_fault+0x159 sys/uvm/uvm_fault.c:632
#5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
#6 usertrap+0x430 sys/arch/amd64/amd64/trap.c:640
#7 recall_trap+0x8
Process 83490 (syz-executor) thread 0xffff8000fffe6fb8 (435220)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83a1b940)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline]
#1 syscall+0xaf4 sys/arch/amd64/amd64/trap.c:783
#2 Xsyscall+0x128
Process 55344 (syz-executor) thread 0xffff8000ffffdc90 (376793)
exclusive rrwlock inode r = 0 (0xfffffd806e6b86b0)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320
#2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
#3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527
#4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576
#5 vget+0x2a2 sys/kern/vfs_subr.c:686
#6 ufs_ihashget+0x185 sys/ufs/ufs/ufs_ihash.c:98
#7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1203
#8 ufs_lookup+0x1a36 sys/ufs/ufs/ufs_lookup.c:478
#9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
#10 vfs_lookup+0x98a sys/kern/vfs_lookup.c:567
#11 namei+0x7ca sys/kern/vfs_lookup.c:250
#12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1887
#13 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#13 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
#14 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd806d504550)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320
#2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
#3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527
#4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576
#5 vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1
#6 namei+0x7ca sys/kern/vfs_lookup.c:250
#7 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1887
#8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
#9 Xsyscall+0x128
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 11082 12162K 12953K 166960K 12937 0
pcb 18 16K 18K 166960K 157 0
rtable 213 8K 9K 166960K 815 0
pf 41 18K 23K 166960K 130 0
ifaddr 43 7K 7K 166960K 121 0
ifgroup 62 2K 2K 166960K 168 0
sysctl 4 1K 9K 166960K 10 0
counters 76 37K 37K 166960K 154 0
ioctlops 0 0K 4K 166960K 1626 0
iov 0 0K 12K 166960K 15 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1382 87K 87K 166960K 1938 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 5K 166960K 11 0
VM map 2 1K 1K 166960K 2 0
sem 12 0K 0K 166960K 29 0
dirhash 12 2K 2K 166960K 15 0
ACPI 1692 195K 286K 166960K 12470 0
file desc 16 57K 93K 166960K 777 0
sigio 0 0K 0K 166960K 9 0
proc 72 115K 180K 166960K 947 0
subproc 72 4K 4K 166960K 189 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 46 0
in_multi 89 6K 7K 166960K 249 0
ether_multi 1 0K 0K 166960K 6 0
mrt 1 0K 0K 166960K 20 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 85 387K 387K 166960K 85 0
exec 0 0K 1K 166960K 617 0
fusefs mount 1 32K 32K 166960K 1 0
pfkey data 0 0K 0K 166960K 2 0
tdb 3 0K 0K 166960K 3 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 234 168K 184K 166960K 8208 0
UVM aobj 17 2K 2K 166960K 20 0
pinsyscall 41 82K 104K 166960K 2296 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 0K 166960K 13 0
NDP 14 0K 2K 166960K 82 0
temp 52 9077K 9555K 166960K 36003 0
kqueue 13 20K 30K 166960K 101 0
SYN cache 2 16K 16K 166960K 2 0
ddb{0}> 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 120 167 0 162 3 2 1 3 0 8 0
rtentry 176 259 0 171 6 0 6 6 0 8 0
unpcb 144 283 0 266 2 1 1 2 0 8 0
syncache 336 6 0 6 2 2 0 1 0 8 0
tcpcb 736 265 0 260 13 1 12 13 0 8 11
arp 136 46 0 31 1 0 1 1 0 8 0
inpcb 328 837 0 826 19 10 9 12 0 8 7
nd6 152 60 0 39 1 0 1 1 0 8 0
pkpcb 40 5 0 5 2 2 0 1 0 8 0
kcovpl 48 21 0 13 1 0 1 1 0 8 0
ppxss 1192 21 0 19 2 1 1 1 0 8 0
pppxif 1576 3 0 2 2 1 1 1 0 8 0
pfstscr 40 2 0 2 1 1 0 1 0 8 0
pffrag 232 9 0 0 1 0 1 1 0 482 0
pffrnode 88 8 0 0 1 0 1 1 0 8 0
pffrent 40 10 0 1 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
pfstlim 224 1 0 1 1 1 0 1 0 8 0
pftag 88 1 0 0 1 0 1 1 0 8 0
pfstitem 24 26 0 11 1 0 1 1 0 8 0
pfstkey 128 27 0 12 1 0 1 1 0 8 0
pfstate 448 26 0 12 3 0 3 3 0 8 0
pfrule 1360 25 0 19 2 1 1 2 0 8 0
art_heap8 4096 3 0 0 3 0 3 3 0 8 0
art_heap4 256 1079 0 670 30 1 29 29 0 8 1
art_table 40 1082 0 670 5 0 5 5 0 8 0
art_node 32 258 0 179 1 0 1 1 0 8 0
sysvmsgpl 40 6 0 3 1 0 1 1 0 8 0
semupl 112 1 0 1 1 1 0 1 0 8 0
semapl 112 23 0 13 2 1 1 1 0 8 0
shmpl 112 17 0 3 1 0 1 1 0 8 0
dirhash 1024 19 0 2 3 0 3 3 0 8 0
dino2pl 256 2412 0 924 94 0 94 94 0 8 0
ffsino 296 2412 0 924 115 0 115 115 0 8 0
nchpl 144 3245 0 1505 65 0 65 65 0 8 0
rtmask 32 3 0 3 2 2 0 1 0 8 0
vnodes 216 2914 0 0 162 0 162 162 0 8 0
namei 1024 11818 0 11818 2 1 1 1 0 8 1
percpumem 16 92 0 39 1 0 1 1 0 8 0
kstatmem 264 87 0 56 4 1 3 3 0 8 0
scsiplug 72 4 0 4 2 1 1 1 0 8 1
scxspl 216 13548 0 13547 10 8 2 8 1 8 1
plimitpl 152 87 0 69 1 0 1 1 0 8 0
sigapl 424 1099 0 1033 9 1 8 8 0 8 0
knotepl 120 576 0 0 18 0 18 18 0 8 0
kqueuepl 224 179 0 168 3 2 1 3 0 8 0
pipepl 344 192 0 165 3 0 3 3 0 8 0
fdescpl 528 1062 0 1032 3 0 3 3 0 8 0
filepl 160 5273 0 5045 23 6 17 18 0 8 7
lockfpl 104 176 0 173 1 0 1 1 0 8 0
lockfspl 48 82 0 79 1 0 1 1 0 8 0
sessionpl 144 52 0 43 1 0 1 1 0 8 0
pgrppl 48 78 0 61 1 0 1 1 0 8 0
ucredpl 104 502 0 487 1 0 1 1 0 8 0
zombiepl 144 1035 0 1033 2 1 1 1 0 8 0
processpl 1232 1099 0 1033 7 1 6 6 0 8 0
procpl 664 1903 0 1831 8 1 7 7 0 8 0
sockpl 752 1307 0 1274 25 14 11 17 0 8 7
mcl64k 65536 3 0 0 1 0 1 1 0 8 0
mcl9k128 9344 1 0 0 1 0 1 1 0 8 0
mcl8k 8192 2 0 0 1 0 1 1 0 8 0
mcl4k 4096 124 0 0 16 0 16 16 0 8 0
mcl2k 2048 26 0 0 4 0 4 4 0 8 0
mtagpl 96 6 0 0 1 0 1 1 0 8 0
mbufpl 256 215 0 0 14 0 14 14 0 8 0
bufpl 280 4923 0 110 344 0 344 344 0 8 0
anonpl 32 7413 0 0 60 0 60 60 0 246 0
amapchunkpl 152 29540 0 29049 36 11 25 33 0 158 4
amappl16 200 2820 0 2789 27 16 11 15 0 8 8
amappl15 192 10 0 10 1 1 0 1 0 8 0
amappl14 184 596 0 595 1 0 1 1 0 8 0
amappl13 176 150 0 138 1 0 1 1 0 8 0
amappl12 168 1365 0 1337 2 0 2 2 0 8 0
amappl11 160 2 0 2 1 1 0 1 0 8 0
amappl10 152 64 0 50 1 0 1 1 0 8 0
amappl9 144 270 0 270 1 1 0 1 0 8 0
amappl8 136 157 0 154 1 0 1 1 0 8 0
amappl7 128 190 0 177 1 0 1 1 0 8 0
amappl6 120 284 0 282 1 0 1 1 0 8 0
amappl5 112 99 0 89 1 0 1 1 0 8 0
amappl4 104 338 0 318 1 0 1 1 0 8 0
amappl3 96 5080 0 4976 5 1 4 4 0 8 1
amappl2 88 667 0 603 2 0 2 2 0 8 0
amappl1 80 13415 0 12823 16 2 14 16 0 8 0
amappl 88 7166 0 7005 5 0 5 5 0 92 1
uvmvnodes 80 121 0 0 3 0 3 3 0 8 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 128 255 0 255 3 2 1 1 0 8 1
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 19 0 3 1 0 1 1 0 8 0
uaddrrnd 24 1062 0 1032 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 1062 0 1032 1 0 1 1 0 8 0
vmmpekpl 168 9961 0 9917 3 0 3 3 0 8 0
vmmpepl 168 74703 0 72826 101 10 91 96 0 357 4
vmsppl 488 1061 0 1032 5 0 5 5 0 8 0
rwobjpl 80 22822 0 21755 29 3 26 27 0 8 3
pdppl 4096 2131 0 2064 133 60 73 85 0 8 6
pvpl 32 13159 0 0 107 1 106 106 0 265 0
pmappl 256 1061 0 1032 3 0 3 3 0 8 0
extentpl 40 45 0 27 1 0 1 1 0 8 0
phpool 112 327 0 68 8 0 8 8 0 8 0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
proc_trampoline() at proc_trampoline+0xc7
end of kernel
end trace frame: 0x7f4641aced10, count: -1
ddb{0}> machine ddbcpu 1
Stopped at x86_ipi_db+0x27: addq $0x8,%rsp
x86_ipi_db(ffff8000299adff0) 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
x86_bus_space_io_read_1(3f8,5) at x86_bus_space_io_read_1+0x37 sys/arch/amd64/amd64/bus_space.c:670
comcnputc(800,d) at comcnputc+0x250 comcn_read_reg sys/dev/ic/com.c:1652 [inline]
comcnputc(800,d) at comcnputc+0x250 sys/dev/ic/com.c:1269
db_putchar(a) at db_putchar+0x498 sys/ddb/db_output.c:168
kprintf() at kprintf+0x223 sys/kern/subr_prf.c:723
db_printf(ffffffff833f4246) at db_printf+0x9b sys/kern/subr_prf.c:-1
fault(ffffffff834b2000) at fault+0xa7 sys/arch/amd64/amd64/trap.c:161
kpageflttrap(ffff800032fca840,98) at kpageflttrap+0x37d sys/arch/amd64/amd64/trap.c:296
kerntrap(ffff800032fca840) at kerntrap+0x19d sys/arch/amd64/amd64/trap.c:528
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
dovutimens(ffff8000fffe6fb8,fffffd806b693cd0,ffff800032fcaa00) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2771
sys_futimens(ffff8000fffe6fb8,ffff800032fcab50,ffff800032fcaaa0) at sys_futimens+0xb3 sys/kern/vfs_syscalls.c:2847
end trace frame: 0xffff800032fcab40, count: 0
ddb{1}> trace
x86_ipi_db(ffff8000299adff0) 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
x86_bus_space_io_read_1(3f8,5) at x86_bus_space_io_read_1+0x37 sys/arch/amd64/amd64/bus_space.c:670
comcnputc(800,d) at comcnputc+0x250 comcn_read_reg sys/dev/ic/com.c:1652 [inline]
comcnputc(800,d) at comcnputc+0x250 sys/dev/ic/com.c:1269
db_putchar(a) at db_putchar+0x498 sys/ddb/db_output.c:168
kprintf() at kprintf+0x223 sys/kern/subr_prf.c:723
db_printf(ffffffff833f4246) at db_printf+0x9b sys/kern/subr_prf.c:-1
fault(ffffffff834b2000) at fault+0xa7 sys/arch/amd64/amd64/trap.c:161
kpageflttrap(ffff800032fca840,98) at kpageflttrap+0x37d sys/arch/amd64/amd64/trap.c:296
kerntrap(ffff800032fca840) at kerntrap+0x19d sys/arch/amd64/amd64/trap.c:528
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
dovutimens(ffff8000fffe6fb8,fffffd806b693cd0,ffff800032fcaa00) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2771
sys_futimens(ffff8000fffe6fb8,ffff800032fcab50,ffff800032fcaaa0) at sys_futimens+0xb3 sys/kern/vfs_syscalls.c:2847
syscall(ffff800032fcab50) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff800032fcab50) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xcb5e3f557f0, count: -16