uvm_fault(0xffffffff839d8080, 0xffuvm_fault(0xffffffff839d8080, 0xffff800029ee5000, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at pvclock_get+0x53: movl 0(%r15),%r12d
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*372076 10035 0 0 0x4000000 0 syz-executor
pvclock_get(ffffffff838b1bd0) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline]
pvclock_get(ffffffff838b1bd0) at pvclock_get+0x53 sys/dev/pv/pvclock.c:333
nsecuptime() at nsecuptime+0x62 tc_delta sys/kern/kern_tc.c:138 [inline]
nsecuptime() at nsecuptime+0x62 binuptime sys/kern/kern_tc.c:191 [inline]
nsecuptime() at nsecuptime+0x62 sys/kern/kern_tc.c:257
clockintr_dispatch(ffff800036cce710) at clockintr_dispatch+0xe8 sys/kern/kern_clockintr.c:180
lapic_clockintr(0,0) at lapic_clockintr+0x43 sys/arch/amd64/amd64/lapic.c:482
Xresume_lapic_ltimer() at Xresume_lapic_ltimer+0x2a
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(800,66) at comcnputc+0xd0 comcn_read_reg sys/dev/ic/com.c:1671 [inline]
comcnputc(800,66) at comcnputc+0xd0 sys/dev/ic/com.c:1264
cnputc(66) at cnputc+0x67 sys/dev/cons.c:218
db_putchar(66) at db_putchar+0x36d sys/ddb/db_output.c:155
kprintf() at kprintf+0x29c5 sys/kern/subr_prf.c:-1
db_printf(ffffffff83425c67) at db_printf+0x9b sys/kern/subr_prf.c:-1
fault(ffffffff834e0820) at fault+0xa3 sys/arch/amd64/amd64/trap.c:161
kpageflttrap(ffff800036ccebc0,ffff800029ee6000) at kpageflttrap+0x353 sys/arch/amd64/amd64/trap.c:296
kerntrap(ffff800036ccebc0) at kerntrap+0x18a sys/arch/amd64/amd64/trap.c:528
end trace frame: 0xffff800036ccec40, 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>
ddb> set $lines = 0
ddb> set $maxwidth = 0
ddb> show panic
*cpu0: uvm_fault(0xffffffff839d8080, 0xffff800029ee5000, 0, 1) -> e
ddb> trace
pvclock_get(ffffffff838b1bd0) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline]
pvclock_get(ffffffff838b1bd0) at pvclock_get+0x53 sys/dev/pv/pvclock.c:333
nsecuptime() at nsecuptime+0x62 tc_delta sys/kern/kern_tc.c:138 [inline]
nsecuptime() at nsecuptime+0x62 binuptime sys/kern/kern_tc.c:191 [inline]
nsecuptime() at nsecuptime+0x62 sys/kern/kern_tc.c:257
clockintr_dispatch(ffff800036cce710) at clockintr_dispatch+0xe8 sys/kern/kern_clockintr.c:180
lapic_clockintr(0,0) at lapic_clockintr+0x43 sys/arch/amd64/amd64/lapic.c:482
Xresume_lapic_ltimer() at Xresume_lapic_ltimer+0x2a
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(800,66) at comcnputc+0xd0 comcn_read_reg sys/dev/ic/com.c:1671 [inline]
comcnputc(800,66) at comcnputc+0xd0 sys/dev/ic/com.c:1264
cnputc(66) at cnputc+0x67 sys/dev/cons.c:218
db_putchar(66) at db_putchar+0x36d sys/ddb/db_output.c:155
kprintf() at kprintf+0x29c5 sys/kern/subr_prf.c:-1
db_printf(ffffffff83425c67) at db_printf+0x9b sys/kern/subr_prf.c:-1
fault(ffffffff834e0820) at fault+0xa3 sys/arch/amd64/amd64/trap.c:161
kpageflttrap(ffff800036ccebc0,ffff800029ee6000) at kpageflttrap+0x353 sys/arch/amd64/amd64/trap.c:296
kerntrap(ffff800036ccebc0) at kerntrap+0x18a sys/arch/amd64/amd64/trap.c:528
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
kcov_remote_enter(0,ffff80002a79c010) at kcov_remote_enter+0x122 sys/dev/kcov.c:670
timeout_run(ffffffff838be2a0,ffff80002a7360a0) at timeout_run+0xdf sys/kern/kern_timeout.c:696
softclock_process_tick_timeout(ffff80002a7360a0,0) at softclock_process_tick_timeout+0x230 sys/kern/kern_timeout.c:756
softclock(0) at softclock+0x152 sys/kern/kern_timeout.c:788
softintr_dispatch(0) at softintr_dispatch+0xf9 sys/kern/kern_softintr.c:87
dosoftint(0) at dosoftint+0x48 sys/arch/amd64/amd64/intr.c:862
Xsoftclock() at Xsoftclock+0x27
writedisklabel(d02,ffffffff810a2fd0,ffff800000039000) at writedisklabel+0x1b8 sys/arch/amd64/amd64/disksubr.c:158
sdioctl(d01,84946467,ffff8000015c1000,3,ffff80003c8f8028) at sdioctl+0x959 sys/scsi/sd.c:919
VOP_IOCTL(fffffd80654d01e8,84946467,ffff8000015c1000,3,fffffd8007ffd750,ffff80003c8f8028) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264
vn_ioctl(fffffd806a87e168,84946467,ffff8000015c1000,ffff80003c8f8028) at vn_ioctl+0xea sys/kern/vfs_vnops.c:537
sys_ioctl(ffff80003c8f8028,ffff800036ccf320,ffff800036ccf270) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1
syscall(ffff800036ccf320) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff800036ccf320) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xa8a4b95d030, count: -29
ddb> show registers
rdi 0xffffffff
rsi 0xd
rbp 0xffff800036cce600
rbx 0x9
rdx 0xffff8000015baf00
rcx 0
rax 0xc
r8 0
r9 0
r10 0
r11 0x5bcb25bf4e5ccb51
r12 0x14f1 __ALIGN_SIZE+0x4f1
r13 0xffffffff838b8b90 th0
r14 0xffffffff838b1bd0 pvclock_timecounter
r15 0xffff800029ee5000
rip 0xffffffff81488223 pvclock_get+0x53
cs 0x8
rflags 0x10246 __ALIGN_SIZE+0xf246
rsp 0xffff800036cce5b0
ss 0x10
pvclock_get+0x53: movl 0(%r15),%r12d
ddb> show proc
PROC (syz-executor) tid=372076 pid=10035 tcnt=2 stat=onproc
flags process=0 proc=4000000<THREAD>
runpri=32, usrpri=86, slppri=32, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff80003c8f94e8,0xffffffff8399cbe0
process=0xffff80002cca7aa0 user=0xffff800036cca000, vmspace=0xfffffd800c1afb98
estcpu=36, cpticks=291, pctcpu=0.0, user=0, sys=291, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
10035 123707 69815 0 2 0 syz-executor
*10035 372076 69815 0 7 0x4000000 syz-executor
99591 505241 91078 0 2 0 syz-executor
99591 333417 91078 0 3 0x4000080 ttyretype syz-executor
99591 287918 91078 0 3 0x4000080 ttyretype syz-executor
5557 83074 68175 0 2 0 syz-executor
5557 940 68175 0 3 0x4000080 fsleep syz-executor
92450 473154 37331 0 3 0x1000080 nanoslp syz-executor
92450 309678 37331 0 3 0x5000080 ttyout syz-executor
92450 462801 37331 0 3 0x5000080 ttyout syz-executor
92450 322335 37331 0 3 0x5000080 fsleep syz-executor
85206 191076 71103 0 3 0x81 nanoslp syz-executor
85206 183379 71103 0 3 0x4000081 kqread syz-executor
85206 95637 71103 0 3 0x4000081 fsleep syz-executor
87491 391680 57197 0 2 0xc90 syz-executor
87491 328966 57197 0 3 0x4000090 ttyin syz-executor
90060 95505 1 0 3 0x100083 ttyin getty
4276 389297 0 0 3 0x14200 acct acct
76121 280527 0 0 3 0x14280 nfsidl nfsio
61773 471137 0 0 3 0x14280 nfsidl nfsio
99410 48795 0 0 3 0x14280 nfsidl nfsio
36790 149449 0 0 3 0x14280 nfsidl nfsio
31015 65679 0 0 3 0x14280 nfsidl nfsio
908 79962 0 0 3 0x14280 nfsidl nfsio
98997 515461 0 0 3 0x14280 nfsidl nfsio
998 102296 0 0 3 0x14280 nfsidl nfsio
25950 223073 0 0 3 0x14280 nfsidl nfsio
3613 453209 0 0 3 0x14280 nfsidl nfsio
92334 161041 0 0 3 0x14280 nfsidl nfsio
65213 101351 0 0 3 0x14280 nfsidl nfsio
81549 171251 0 0 3 0x14280 nfsidl nfsio
55783 29599 0 0 3 0x14280 nfsidl nfsio
8922 458626 0 0 3 0x14280 nfsidl nfsio
89306 10656 0 0 3 0x14280 nfsidl nfsio
49266 276771 0 0 3 0x14280 nfsidl nfsio
93500 460904 0 0 3 0x14280 nfsidl nfsio
50574 150550 0 0 3 0x14280 nfsidl nfsio
24315 275324 0 0 3 0x14280 nfsidl nfsio
71103 43109 311 0 3 0x82 nanoslp syz-executor
57197 344101 311 0 3 0x82 nanoslp syz-executor
68175 193075 311 0 3 0x82 nanoslp syz-executor
43485 418016 311 0 3 0x82 wait syz-executor
91078 143887 311 0 3 0x82 nanoslp syz-executor
37331 437378 311 0 3 0x82 nanoslp syz-executor
18890 48370 311 0 2 0x2 syz-executor
69815 49494 311 0 3 0x82 nanoslp syz-executor
311 392875 90861 0 3 0x82 kqread syz-executor
90861 104507 27140 0 3 0x10008a sigsusp ksh
27140 107281 79126 0 3 0x98 kqread sshd-session
79126 467021 16305 0 3 0x92 kqread sshd-session
16305 21316 1 0 3 0x88 kqread sshd
29036 498683 60139 73 3 0x1100090 kqread syslogd
60139 263367 1 0 3 0x100082 sbwait syslogd
36040 227006 1 0 3 0x100080 kqread resolvd
36136 482109 81729 77 3 0x100092 kqread dhcpleased
66172 503779 81729 77 3 0x100092 kqread dhcpleased
81729 453144 1 0 3 0x80 kqread dhcpleased
92246 275179 0 0 3 0x14200 bored smr
47315 241889 0 0 2 0x14200 zerothread
47664 413382 0 0 3 0x14200 aiodoned aiodoned
94317 54180 0 0 3 0x14200 syncer update
71497 43823 0 0 3 0x14200 cleaner cleaner
31013 417190 0 0 3 0x14200 reaper reaper
78382 336140 0 0 3 0x14200 pgdaemon pagedaemon
50762 68225 0 0 3 0x14200 bored viomb
59254 315799 0 0 3 0x40014200 acpi0 acpi0
19507 250846 0 0 3 0x14200 bored softnet0
44871 410388 0 0 3 0x14200 bored systqmp
4590 86711 0 0 3 0x14200 bored systq
97649 438472 0 0 3 0x40014200 tmoslp softclock
5477 231824 0 0 3 0x40014200 idle0
1 204480 0 0 3 0x80082 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
devbuf 11069 12280K 13886K 166960K 14049 0
pcb 18 16K 17K 166960K 251 0
rtable 210 10K 14K 166960K 500 0
pf 32 14K 21K 166960K 160 0
ifaddr 29 5K 7K 166960K 72 0
ifgroup 38 1K 2K 166960K 113 0
sysctl 4 1K 9K 166960K 8 0
counters 30 17K 18K 166960K 61 0
ioctlops 1 2K 4K 166960K 183 0
iov 0 0K 16K 166960K 33 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1482 93K 94K 166960K 2501 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 9K 166960K 15 0
VM map 2 1K 1K 166960K 2 0
sem 12 0K 1K 166960K 164 0
dirhash 12 2K 3K 166960K 36 0
ACPI 1692 195K 286K 166960K 12470 0
file desc 17 61K 240K 166960K 1023 0
sigio 0 0K 0K 166960K 19 0
proc 61 67K 91K 166960K 616 0
subproc 72 4K 4K 166960K 72 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 2 0K 0K 166960K 129 0
in_multi 62 4K 7K 166960K 140 0
ether_multi 1 0K 0K 166960K 7 0
mrt 1 0K 0K 166960K 28 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 133 599K 599K 166960K 133 0
exec 0 0K 1K 166960K 765 0
fusefs mount 1 32K 32K 166960K 1 0
pfkey data 0 0K 0K 166960K 1 0
tdb 3 0K 0K 166960K 3 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 219 158K 178K 166960K 10344 0
UVM aobj 12 2K 2K 166960K 13 0
pinsyscall 38 76K 92K 166960K 2124 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 0K 166960K 33 0
NDP 8 0K 2K 166960K 51 0
temp 65 9113K 13212K 166960K 58976 0
kqueue 17 26K 33K 166960K 165 0
SYN cache 2 16K 16K 166960K 2 0
ddb> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
rtpcb 120 152 0 149 3 2 1 3 0 8 0
rtentry 136 132 0 52 4 0 4 4 0 8 0
unpcb 144 670 0 655 10 4 6 6 0 8 5
syncache 336 8 0 8 2 1 1 1 0 8 1
tcpcb 736 372 0 365 7 6 1 7 0 8 0
arp 96 22 0 7 1 0 1 1 0 8 0
ipq 40 3 0 0 1 0 1 1 0 8 0
ipqe 40 3 0 0 1 0 1 1 0 8 0
inpcb 328 1073 0 1061 18 11 7 13 0 8 5
ip6q 72 1 0 0 1 0 1 1 0 8 0
ip6af 40 1 0 0 1 0 1 1 0 8 0
nd6 112 28 0 14 1 0 1 1 0 8 0
pkpcb 40 9 0 9 2 1 1 1 0 8 1
kcovpl 48 8 0 0 1 0 1 1 0 8 0
mppekey 1024 1 0 1 1 1 0 1 0 8 0
ppxss 1072 22 0 22 2 1 1 1 0 8 1
pfstscr 40 13 0 10 1 0 1 1 0 8 0
pffrag 232 7 0 3 1 0 1 1 0 482 0
pffrnode 88 6 0 3 1 0 1 1 0 8 0
pffrent 40 13 0 7 1 0 1 1 0 8 0
pfrktable 1344 13 0 11 1 0 1 1 0 8 0
pfsrclim 320 2 0 2 2 1 1 1 0 8 1
pfanchor 1288 4 0 1 1 0 1 1 0 8 0
pftag 88 4 0 2 2 1 1 1 0 8 0
pfqueue 320 2 0 0 1 0 1 1 0 8 0
pfstitem 24 3 0 0 1 0 1 1 0 8 0
pfstkey 128 14 0 11 1 0 1 1 0 8 0
pfstate 384 8 0 6 1 0 1 1 0 8 0
pfrule 1360 18 0 16 1 0 1 1 0 8 0
rttmr 136 3 0 3 2 1 1 1 0 8 1
art_heap8 4096 2 0 0 2 0 2 2 0 8 0
art_heap4 256 525 0 205 30 3 27 30 0 8 5
art_table 40 527 0 205 5 0 5 5 0 8 0
art_node 32 130 0 57 1 0 1 1 0 8 0
sysvmsgpl 40 23 0 12 1 0 1 1 0 8 0
semapl 72 148 0 138 1 0 1 1 0 8 0
shmpl 112 10 0 1 1 0 1 1 0 8 0
dirhash 1024 33 0 16 3 0 3 3 0 8 0
dino2pl 256 3385 0 1929 92 0 92 92 0 8 0
ffsino 256 3385 0 1929 92 0 92 92 0 8 0
nchpl 144 4837 0 3136 64 0 64 64 0 8 0
rtmask 32 4 0 4 1 1 0 1 0 8 0
vnodes 216 3230 0 0 180 0 180 180 0 8 0
namei 1024 17091 0 17090 1 0 1 1 0 8 0
pfiaddrpl 120 5 0 4 1 0 1 1 0 8 0
acpiwqpl 32 1 0 1 1 0 1 1 1 8 1
kstatmem 264 69 0 52 2 0 2 2 0 8 0
scsiplug 72 3 0 3 2 1 1 1 0 8 1
scxspl 216 15956 0 15956 9 7 2 8 1 8 2
plimitpl 152 302 0 284 1 0 1 1 0 8 0
sigapl 424 1330 0 1267 8 0 8 8 0 8 0
knotepl 120 41101 0 41046 29 19 10 16 0 8 6
kqueuepl 184 278 0 265 3 0 3 3 0 8 2
pipepl 304 282 0 255 5 2 3 5 0 8 0
fdescpl 448 1296 0 1267 5 1 4 5 0 8 0
filepl 120 8525 0 8293 19 6 13 14 0 8 5
lockfpl 104 418 0 415 1 0 1 1 0 8 0
lockfspl 48 187 0 184 1 0 1 1 0 8 0
sessionpl 144 123 0 114 1 0 1 1 0 8 0
pgrppl 48 137 0 120 1 0 1 1 0 8 0
ucredpl 104 1750 0 1738 1 0 1 1 0 8 0
zombiepl 144 1268 0 1267 2 1 1 1 0 8 0
processpl 1152 1330 0 1267 5 0 5 5 0 8 0
procpl 664 2597 0 2524 7 0 7 7 0 8 0
sosppl 176 5 0 5 1 0 1 1 0 8 1
sockpl 552 1934 0 1903 35 25 10 19 0 8 7
mcl64k 65536 200 0 200 2 1 1 1 0 8 1
mcl16k 16384 1 0 1 1 1 0 1 0 8 0
mcl9k128 9344 1 0 1 1 1 0 1 0 8 0
mcl8k 8192 16 0 16 2 1 1 1 0 8 1
mcl4k 4096 3738 0 3685 14 6 8 13 0 8 0
mcl2k 2048 909 0 904 3 1 2 3 0 8 1
mtagpl 96 87 0 82 1 0 1 1 0 8 0
mbufpl 256 14497 0 14344 30 15 15 29 0 8 1
bufpl 280 7005 0 789 445 0 445 445 0 8 0
anonpl 24 181404 0 178128 50 2 48 48 0 186 23
amapchunkpl 152 35415 0 34950 35 2 33 33 0 158 14
amappl16 200 3490 0 3458 30 20 10 16 0 8 7
amappl15 192 3 0 3 1 1 0 1 0 8 0
amappl14 184 416 0 414 1 0 1 1 0 8 0
amappl13 176 120 0 110 1 0 1 1 0 8 0
amappl12 168 1538 0 1510 2 0 2 2 0 8 0
amappl11 160 9 0 8 1 0 1 1 0 8 0
amappl10 152 59 0 48 1 0 1 1 0 8 0
amappl9 144 279 0 279 1 1 0 1 0 8 0
amappl8 136 117 0 116 1 0 1 1 0 8 0
amappl7 128 147 0 135 1 0 1 1 0 8 0
amappl6 120 224 0 222 1 0 1 1 0 8 0
amappl5 112 91 0 83 1 0 1 1 0 8 0
amappl4 104 279 0 262 1 0 1 1 0 8 0
amappl3 96 7189 0 7080 5 1 4 4 0 8 1
amappl2 88 538 0 482 2 0 2 2 0 8 0
amappl1 80 13959 0 13404 13 1 12 13 0 8 0
amappl 88 9491 0 9335 5 1 4 5 0 92 0
uvmvnodes 80 128 0 0 3 0 3 3 0 8 0
dma8192 8192 1 0 1 1 1 0 1 0 8 0
dma4096 4096 2 0 2 1 1 0 1 0 8 0
dma1024 1024 1 0 0 1 0 1 1 0 8 0
dma512 512 1 0 1 1 1 0 1 0 8 0
dma256 256 7 0 7 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 22 0 21 1 0 1 1 0 8 0
aobjpl 72 12 0 1 1 0 1 1 0 8 0
uaddrrnd 24 1296 0 1267 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 1296 0 1267 1 0 1 1 0 8 0
vmmpekpl 168 11611 0 11578 2 0 2 2 0 8 0
vmmpepl 168 87133 0 85324 104 11 93 93 0 357 11
vmsppl 368 1295 0 1267 4 1 3 4 0 8 0
rwobjpl 40 24485 0 23494 15 2 13 13 0 8 1
pdppl 4096 2598 0 2534 106 40 66 78 0 8 2
pvpl 32 555892 0 546990 133 10 123 123 0 265 36
pmappl 216 1295 0 1267 2 0 2 2 0 8 0
extentpl 40 45 0 27 1 0 1 1 0 8 0
phpool 112 403 0 82 11 1 10 11 0 8 0
ddb> machine ddbcpu 0
No such command
ddb> trace
pvclock_get(ffffffff838b1bd0) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline]
pvclock_get(ffffffff838b1bd0) at pvclock_get+0x53 sys/dev/pv/pvclock.c:333
nsecuptime() at nsecuptime+0x62 tc_delta sys/kern/kern_tc.c:138 [inline]
nsecuptime() at nsecuptime+0x62 binuptime sys/kern/kern_tc.c:191 [inline]
nsecuptime() at nsecuptime+0x62 sys/kern/kern_tc.c:257
clockintr_dispatch(ffff800036cce710) at clockintr_dispatch+0xe8 sys/kern/kern_clockintr.c:180
lapic_clockintr(0,0) at lapic_clockintr+0x43 sys/arch/amd64/amd64/lapic.c:482
Xresume_lapic_ltimer() at Xresume_lapic_ltimer+0x2a
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(800,66) at comcnputc+0xd0 comcn_read_reg sys/dev/ic/com.c:1671 [inline]
comcnputc(800,66) at comcnputc+0xd0 sys/dev/ic/com.c:1264
cnputc(66) at cnputc+0x67 sys/dev/cons.c:218
db_putchar(66) at db_putchar+0x36d sys/ddb/db_output.c:155
kprintf() at kprintf+0x29c5 sys/kern/subr_prf.c:-1
db_printf(ffffffff83425c67) at db_printf+0x9b sys/kern/subr_prf.c:-1
fault(ffffffff834e0820) at fault+0xa3 sys/arch/amd64/amd64/trap.c:161
kpageflttrap(ffff800036ccebc0,ffff800029ee6000) at kpageflttrap+0x353 sys/arch/amd64/amd64/trap.c:296
kerntrap(ffff800036ccebc0) at kerntrap+0x18a sys/arch/amd64/amd64/trap.c:528
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
kcov_remote_enter(0,ffff80002a79c010) at kcov_remote_enter+0x122 sys/dev/kcov.c:670
timeout_run(ffffffff838be2a0,ffff80002a7360a0) at timeout_run+0xdf sys/kern/kern_timeout.c:696
softclock_process_tick_timeout(ffff80002a7360a0,0) at softclock_process_tick_timeout+0x230 sys/kern/kern_timeout.c:756
softclock(0) at softclock+0x152 sys/kern/kern_timeout.c:788
softintr_dispatch(0) at softintr_dispatch+0xf9 sys/kern/kern_softintr.c:87
dosoftint(0) at dosoftint+0x48 sys/arch/amd64/amd64/intr.c:862
Xsoftclock() at Xsoftclock+0x27
writedisklabel(d02,ffffffff810a2fd0,ffff800000039000) at writedisklabel+0x1b8 sys/arch/amd64/amd64/disksubr.c:158
sdioctl(d01,84946467,ffff8000015c1000,3,ffff80003c8f8028) at sdioctl+0x959 sys/scsi/sd.c:919
VOP_IOCTL(fffffd80654d01e8,84946467,ffff8000015c1000,3,fffffd8007ffd750,ffff80003c8f8028) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264
vn_ioctl(fffffd806a87e168,84946467,ffff8000015c1000,ffff80003c8f8028) at vn_ioctl+0xea sys/kern/vfs_vnops.c:537
sys_ioctl(ffff80003c8f8028,ffff800036ccf320,ffff800036ccf270) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1
syscall(ffff800036ccf320) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff800036ccf320) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xa8a4b95d030, count: -29
ddb> machine ddbcpu 1
No such command
ddb> trace
pvclock_get(ffffffff838b1bd0) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline]
pvclock_get(ffffffff838b1bd0) at pvclock_get+0x53 sys/dev/pv/pvclock.c:333
nsecuptime() at nsecuptime+0x62 tc_delta sys/kern/kern_tc.c:138 [inline]
nsecuptime() at nsecuptime+0x62 binuptime sys/kern/kern_tc.c:191 [inline]
nsecuptime() at nsecuptime+0x62 sys/kern/kern_tc.c:257
clockintr_dispatch(ffff800036cce710) at clockintr_dispatch+0xe8 sys/kern/kern_clockintr.c:180
lapic_clockintr(0,0) at lapic_clockintr+0x43 sys/arch/amd64/amd64/lapic.c:482
Xresume_lapic_ltimer() at Xresume_lapic_ltimer+0x2a
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(800,66) at comcnputc+0xd0 comcn_read_reg sys/dev/ic/com.c:1671 [inline]
comcnputc(800,66) at comcnputc+0xd0 sys/dev/ic/com.c:1264
cnputc(66) at cnputc+0x67 sys/dev/cons.c:218
db_putchar(66) at db_putchar+0x36d sys/ddb/db_output.c:155
kprintf() at kprintf+0x29c5 sys/kern/subr_prf.c:-1
db_printf(ffffffff83425c67) at db_printf+0x9b sys/kern/subr_prf.c:-1
fault(ffffffff834e0820) at fault+0xa3 sys/arch/amd64/amd64/trap.c:161
kpageflttrap(ffff800036ccebc0,ffff800029ee6000) at kpageflttrap+0x353 sys/arch/amd64/amd64/trap.c:296
kerntrap(ffff800036ccebc0) at kerntrap+0x18a sys/arch/amd64/amd64/trap.c:528
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
kcov_remote_enter(0,ffff80002a79c010) at kcov_remote_enter+0x122 sys/dev/kcov.c:670
timeout_run(ffffffff838be2a0,ffff80002a7360a0) at timeout_run+0xdf sys/kern/kern_timeout.c:696
softclock_process_tick_timeout(ffff80002a7360a0,0) at softclock_process_tick_timeout+0x230 sys/kern/kern_timeout.c:756
softclock(0) at softclock+0x152 sys/kern/kern_timeout.c:788
softintr_dispatch(0) at softintr_dispatch+0xf9 sys/kern/kern_softintr.c:87
dosoftint(0) at dosoftint+0x48 sys/arch/amd64/amd64/intr.c:862
Xsoftclock() at Xsoftclock+0x27
writedisklabel(d02,ffffffff810a2fd0,ffff800000039000) at writedisklabel+0x1b8 sys/arch/amd64/amd64/disksubr.c:158
sdioctl(d01,84946467,ffff8000015c1000,3,ffff80003c8f8028) at sdioctl+0x959 sys/scsi/sd.c:919
VOP_IOCTL(fffffd80654d01e8,84946467,ffff8000015c1000,3,fffffd8007ffd750,ffff80003c8f8028) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264
vn_ioctl(fffffd806a87e168,84946467,ffff8000015c1000,ffff80003c8f8028) at vn_ioctl+0xea sys/kern/vfs_vnops.c:537
sys_ioctl(ffff80003c8f8028,ffff800036ccf320,ffff800036ccf270) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1
syscall(ffff800036ccf320) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff800036ccf320) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xa8a4b95d030, count: -29