*cpu1: uvm_fault(0xfffffd800b063b70, 0x0, 0, 1) -> e
ddb{0}> trace
proc_trampoline() at proc_trampoline+0xc7
end of kernel
end trace frame: 0x7277f69f6ad0, count: -1
ddb{0}> show registers
rdi 0
rsi 0
rbp 0xffff80002a348870
rbx 0
rdx 0
rcx 0xffff80003c440aa0
rax 0x2a
r8 0xffff80002a3487a0
r9 0x1
r10 0x8e7e8be68b9f2cbc
r11 0xfd5702e9fc68dcf5
r12 0
r13 0
r14 0
r15 0
rip 0xffffffff81fe54c7 proc_trampoline+0xc7
cs 0x8
rflags 0x246
rsp 0xffff80002a3487f0
ss 0
proc_trampoline+0xc7: movl $0,%gs:0x688
ddb{0}> show proc
PROC (syz-executor) tid=225016 pid=3658 tcnt=2 stat=onproc
flags process=0 proc=0
runpri=50, usrpri=50, slppri=32, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff80003c441a30,0xffff80002a260d20
process=0xffff8000fffed828 user=0xffff80002a343000, vmspace=0xfffffd800b0631e8
estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
69001 447474 79222 0 2 0 syz-executor
* 3658 225016 19725 0 7 0 syz-executor
3658 319465 19725 0 3 0x4000080 fsleep syz-executor
783 101139 2136 0 2 0 syz-executor
783 279703 2136 0 2 0x4000000 syz-executor
783 265734 2136 0 3 0x4000080 fsleep syz-executor
783 196061 2136 0 3 0x4000080 fsleep syz-executor
53175 206816 31298 0 2 0 syz-executor
53175 386757 31298 0 3 0x4000080 fsleep syz-executor
53175 162886 31298 0 3 0x4000080 fsleep syz-executor
81591 257813 23640 0 2 0 syz-executor
81591 14606 23640 0 3 0x4000080 netacc syz-executor
81591 285623 23640 0 3 0x4000080 fsleep syz-executor
81591 399621 23640 0 2 0x4000000 syz-executor
36130 259389 80693 0 2 0x1 syz-executor
36130 421390 80693 0 3 0x4000080 fsleep syz-executor
36130 413972 80693 0 7 0x4000000 syz-executor
36130 339150 80693 0 3 0x4000080 fsleep syz-executor
24879 358163 41546 0 2 0x1 syz-executor
24879 397652 41546 0 2 0x4000000 syz-executor
24879 44782 41546 0 3 0x4000000 inode syz-executor
24879 99895 41546 0 3 0x4000000 fltagain2 syz-executor
24879 309012 41546 0 3 0x4000000 pipecl syz-executor
24879 70071 41546 0 3 0x4000080 fsleep syz-executor
51503 428997 0 0 3 0x14200 acct acct
47087 184266 0 0 3 0x14280 nfsidl nfsio
5925 14560 0 0 3 0x14280 nfsidl nfsio
49944 74373 0 0 3 0x14280 nfsidl nfsio
49465 91563 0 0 3 0x14280 nfsidl nfsio
23640 327040 20961 0 3 0x82 nanoslp syz-executor
80831 80020 20961 0 2 0x10000003 syz-executor
43053 485944 1 0 3 0x100083 ttyin getty
19725 166712 20961 0 3 0x82 nanoslp syz-executor
2136 373889 20961 0 2 0x3 syz-executor
80693 510170 20961 0 3 0x82 nanoslp syz-executor
31298 120916 20961 0 3 0x82 nanoslp syz-executor
79222 229060 20961 0 3 0x82 nanoslp syz-executor
41546 139567 20961 0 2 0x2 syz-executor
20961 292560 39468 0 3 0x82 kqread syz-executor
39468 347962 88294 0 3 0x10008a sigsusp ksh
88294 64331 59396 0 3 0x98 kqread sshd-session
59396 219289 83723 0 3 0x92 kqread sshd-session
83723 176795 1 0 3 0x88 kqread sshd
60988 320009 40618 74 3 0x1100092 bpf pflogd
40618 442426 1 0 3 0x80 sbwait pflogd
40725 434034 67604 73 3 0x1100090 kqread syslogd
67604 322502 1 0 3 0x100082 sbwait syslogd
7736 14863 1 0 3 0x100080 kqread resolvd
38229 128588 45178 77 3 0x100092 kqread dhcpleased
88646 352324 45178 77 3 0x100092 kqread dhcpleased
45178 307023 1 0 3 0x80 kqread dhcpleased
16230 302264 0 0 3 0x14200 bored smr
33859 430064 0 0 2 0x14200 zerothread
42356 353571 0 0 3 0x14200 aiodoned aiodoned
30389 195334 0 0 3 0x14200 syncer update
40121 421195 0 0 3 0x14200 cleaner cleaner
79387 341408 0 0 3 0x14200 reaper reaper
46341 332598 0 0 3 0x14200 pgdaemon pagedaemon
39574 247240 0 0 3 0x14200 bored viomb
48622 142661 0 0 3 0x40014200 acpi0 acpi0
53271 352339 0 0 3 0x40014200 idle1
12706 420655 0 0 3 0x14200 bored softnet1
7093 286276 0 0 3 0x14200 bored softnet0
67798 471143 0 0 3 0x14200 bored systqmp
6677 142038 0 0 3 0x14200 bored systq
40978 95173 0 0 3 0x14200 tmoslp softclockmp
96569 508102 0 0 3 0x40014200 tmoslp softclock
67551 65612 0 0 3 0x40014200 idle0
1 224525 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 (0xfffffd806a061010)
#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_enter+0x24b rcr3 sys/arch/amd64/compile/SYZKALLER/obj/machine/cpufunc.h:139 [inline]
#2 pmap_enter+0x24b pmap_map_ptes sys/arch/amd64/amd64/pmap.c:437 [inline]
#2 pmap_enter+0x24b sys/arch/amd64/amd64/pmap.c:2767
#3 uvm_fault_lower_lookup+0x369 sys/uvm/uvm_fault.c:-1
#4 uvm_fault_lower+0x89 sys/uvm/uvm_fault.c:1334
#5 uvm_fault+0x274 sys/uvm/uvm_fault.c:-1
#6 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
#7 usertrap+0x42f sys/arch/amd64/amd64/trap.c:632
#8 recall_trap+0x8
Process 3658 (syz-executor) thread 0xffff80003c440aa0 (225016)
shared rwlock uobjlk r = 0 (0xfffffd807bdd8b78)
#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 uvm_fault_lower_lookup+0x53 sys/uvm/uvm_fault.c:1204
#3 uvm_fault_lower+0x89 sys/uvm/uvm_fault.c:1334
#4 uvm_fault+0x274 sys/uvm/uvm_fault.c:-1
#5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
#6 usertrap+0x42f sys/arch/amd64/amd64/trap.c:632
#7 recall_trap+0x8
shared rwlock vmmaplk r = 0 (0xfffffd800b0632e8)
#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+0x42f sys/arch/amd64/amd64/trap.c:632
#7 recall_trap+0x8
exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806a061010)
#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_enter+0x24b rcr3 sys/arch/amd64/compile/SYZKALLER/obj/machine/cpufunc.h:139 [inline]
#2 pmap_enter+0x24b pmap_map_ptes sys/arch/amd64/amd64/pmap.c:437 [inline]
#2 pmap_enter+0x24b sys/arch/amd64/amd64/pmap.c:2767
#3 uvm_fault_lower_lookup+0x369 sys/uvm/uvm_fault.c:-1
#4 uvm_fault_lower+0x89 sys/uvm/uvm_fault.c:1334
#5 uvm_fault+0x274 sys/uvm/uvm_fault.c:-1
#6 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
#7 usertrap+0x42f sys/arch/amd64/amd64/trap.c:632
#8 recall_trap+0x8
Process 36130 (syz-executor) thread 0xffff80003c4402d8 (413972)
exclusive rwlock dtlk r = 0 (0xffffffff837d06a8)
#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 dt_ioctl_record_stop+0x2e sys/dev/dt/dt_dev.c:572
#3 dtioctl+0x536 sys/dev/dt/dt_dev.c:325
#4 VOP_IOCTL+0xac sys/kern/vfs_vops.c:264
#5 vn_ioctl+0xf8 sys/kern/vfs_vnops.c:531
#6 sys_ioctl+0x674 sys/kern/sys_generic.c:-1
#7 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#7 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775
#8 Xsyscall+0x128
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff838d1540)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 vn_ioctl+0x4d sys/kern/vfs_vnops.c:514
#2 sys_ioctl+0x674 sys/kern/sys_generic.c:-1
#3 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#3 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775
#4 Xsyscall+0x128
Process 24879 (syz-executor) thread 0xffff80002a261ca0 (397652)
exclusive rrwlock inode r = 0 (0xfffffd806f0c8c98)
#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:570
#5 vn_write+0x18f sys/kern/vfs_vnops.c:405
#6 dofilewritev+0x242 sys/kern/sys_generic.c:380
#7 sys_write+0xa2 sys/kern/sys_generic.c:300
#8 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#8 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775
#9 Xsyscall+0x128
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 11120 12222K 14132K 166960K 17984 0
pcb 18 20K 40K 166960K 1571 0
rtable 244 15K 15K 166960K 1205 0
pf 37 18K 81K 166960K 554 0
ifaddr 38 8K 10K 166960K 376 0
ifgroup 58 2K 3K 166960K 744 0
sysctl 4 1K 9K 166960K 72 0
counters 70 37K 39K 166960K 760 0
ioctlops 0 0K 4K 166960K 2820 0
iov 0 0K 32K 166960K 495 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1450 91K 92K 166960K 4888 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 5K 166960K 22 0
VM map 2 1K 1K 166960K 2 0
sem 12 0K 0K 166960K 287 0
dirhash 12 2K 3K 166960K 120 0
ACPI 1692 195K 286K 166960K 12470 0
file desc 17 61K 110K 166960K 4714 0
sigio 0 0K 0K 166960K 150 0
proc 72 115K 196K 166960K 1273 0
subproc 72 4K 4K 166960K 164 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 690 0
in_multi 70 5K 7K 166960K 427 0
ether_multi 1 0K 0K 166960K 59 0
mrt 1 0K 0K 166960K 35 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 253 1129K 1129K 166960K 253 0
exec 0 0K 1K 166960K 1321 0
fusefs mount 1 32K 32K 166960K 1 0
pfkey data 0 0K 0K 166960K 41 0
tdb 3 0K 0K 166960K 3 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 269 169K 195K 166960K 43684 0
UVM aobj 77 38K 38K 166960K 98 0
pinsyscall 42 84K 108K 166960K 6216 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 1K 166960K 387 0
NDP 12 0K 2K 166960K 286 0
temp 87 8688K 8816K 166960K 232169 0
kqueue 14 22K 30K 166960K 962 0
SYN cache 2 8K 16K 166960K 3 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 120 327 0 324 1 0 1 1 0 8 0
rtentry 176 333 0 246 6 1 5 6 0 8 0
unpcb 144 3039 0 3021 27 23 4 6 0 8 3
syncache 336 35 0 35 9 8 1 1 0 8 1
tcpqe 32 47 0 47 5 4 1 1 0 8 1
tcpcb 736 1512 0 1496 28 26 2 7 0 8 0
arp 136 48 0 28 1 0 1 1 0 8 0
inpcb 328 5972 0 5952 62 56 6 15 0 8 3
nd6 152 64 0 44 2 1 1 2 0 8 0
pkpcb 40 147 0 147 11 10 1 1 0 8 1
kcovpl 48 18 0 10 1 0 1 1 0 8 0
mppekey 1024 6 0 6 5 5 0 1 0 8 0
ppxss 1192 257 0 257 5 4 1 1 0 8 1
pppxif 1504 42 0 42 10 9 1 1 0 8 1
pffrag 232 39 0 26 2 1 1 1 0 482 0
pffrnode 88 35 0 22 2 1 1 1 0 8 0
pffrent 40 101 0 88 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
pfrktable 1344 1 0 1 1 1 0 1 0 8 0
pfstitem 24 1 0 0 1 0 1 1 0 8 0
pfstkey 128 1 0 0 1 0 1 1 0 8 0
pfstate 448 1 0 0 1 0 1 1 0 8 0
pfrule 1360 1 0 1 1 1 0 1 0 8 0
rttmr 136 7 0 7 6 6 0 1 0 8 0
art_heap8 4096 6 0 1 6 0 6 6 0 8 1
art_heap4 256 1577 0 1220 42 17 25 31 0 8 0
art_table 40 1583 0 1221 5 0 5 5 0 8 0
art_node 32 333 0 258 1 0 1 1 0 8 0
sysvmsgpl 40 22 0 20 1 0 1 1 0 8 0
semapl 112 281 0 271 1 0 1 1 0 8 0
shmpl 112 66 0 9 2 0 2 2 0 8 0
dirhash 1024 89 0 72 3 0 3 3 0 8 0
dino2pl 256 10863 0 9329 97 0 97 97 0 8 0
ffsino 296 10863 0 9329 120 1 119 119 0 8 0
nchpl 144 17273 0 15548 65 0 65 65 0 8 0
rtmask 32 47 0 47 8 7 1 1 0 8 1
vnodes 216 5926 0 0 330 0 330 330 0 8 0
namei 1024 62559 0 62559 5 4 1 2 0 8 1
percpumem 16 395 0 345 1 0 1 1 0 8 0
vcpupl 3968 22 0 5 3 0 3 3 0 8 0
vmpool 848 28 0 11 2 0 2 2 0 8 0
kstatmem 264 492 0 464 8 5 3 3 0 8 0
acpiwqpl 32 5 0 5 1 0 1 1 1 8 1
scsiplug 72 24 0 24 11 11 0 1 0 8 0
scxspl 216 172011 0 172011 17 16 1 8 1 8 1
plimitpl 152 1631 0 1612 1 0 1 1 0 8 0
sigapl 424 5046 0 4993 9 2 7 8 0 8 0
knotepl 120 908 0 0 24 0 24 24 0 8 0
kqueuepl 224 1795 0 1785 16 14 2 5 0 8 1
pipepl 344 972 0 942 13 10 3 9 0 8 0
fdescpl 528 4988 0 4957 3 0 3 3 0 8 0
filepl 160 36147 0 35911 41 28 13 18 0 8 0
lockfpl 104 1984 0 1980 5 4 1 2 0 8 0
lockfspl 48 631 0 627 1 0 1 1 0 8 0
sessionpl 144 62 0 53 1 0 1 1 0 8 0
pgrppl 48 240 0 223 1 0 1 1 0 8 0
ucredpl 104 6608 0 6593 1 0 1 1 0 8 0
zombiepl 144 5116 0 5115 1 0 1 1 0 8 0
processpl 1232 5046 0 4993 6 0 6 6 0 8 0
procpl 664 12757 0 12687 9 2 7 8 0 8 0
sosppl 176 35 0 35 9 8 1 1 0 8 1
sockpl 752 9772 0 9729 94 83 11 20 0 8 5
mcl64k 65536 11 0 0 2 0 2 2 0 8 0
mcl16k 16384 8 0 0 1 0 1 1 0 8 0
mcl12k 12288 4 0 0 1 0 1 1 0 8 0
mcl9k 9216 2 0 0 1 0 1 1 0 8 0
mcl8k 8192 5 0 0 1 0 1 1 0 8 0
mcl4k 4096 135 0 0 16 0 16 16 0 8 0
mcl2k2 2112 3 0 0 1 0 1 1 0 8 0
mcl2k 2048 142 0 0 8 0 8 8 0 8 1
mtagpl 96 25 0 0 1 0 1 1 0 8 0
mbufpl 256 1191 0 0 73 0 73 73 0 8 0
bufpl 280 75044 0 68907 439 0 439 439 0 8 0
anonpl 32 23741 0 0 191 0 191 191 0 246 0
amapchunkpl 152 157981 0 157330 87 51 36 37 0 158 8
amappl16 200 22651 0 22347 183 149 34 50 0 8 8
amappl15 192 5 0 5 1 1 0 1 0 8 0
amappl14 184 1 0 1 1 1 0 1 0 8 0
amappl13 176 545 0 544 1 0 1 1 0 8 0
amappl12 168 5523 0 5481 3 0 3 3 0 8 0
amappl11 160 11 0 11 2 2 0 1 0 8 0
amappl10 152 50 0 34 1 0 1 1 0 8 0
amappl9 144 251 0 251 1 1 0 1 0 8 0
amappl8 136 25 0 22 1 0 1 1 0 8 0
amappl7 128 128 0 124 1 0 1 1 0 8 0
amappl6 120 431 0 417 1 0 1 1 0 8 0
amappl5 112 152 0 141 1 0 1 1 0 8 0
amappl4 104 629 0 598 1 0 1 1 0 8 0
amappl3 96 27695 0 27590 4 1 3 3 0 8 0
amappl2 88 5304 0 5227 3 1 2 3 0 8 0
amappl1 80 35995 0 35400 19 4 15 17 0 8 0
amappl 88 41884 0 41696 5 0 5 5 0 92 0
uvmvnodes 80 255 0 0 6 0 6 6 0 8 0
dma65536 65536 1 0 1 1 1 0 1 0 8 0
dma8192 8192 1 0 1 1 1 0 1 0 8 0
dma4096 4096 4 0 4 4 4 0 1 0 8 0
dma2048 2048 1 0 1 1 1 0 1 0 8 0
dma1024 1024 1 0 0 1 0 1 1 0 8 0
dma512 512 21 0 21 4 4 0 1 0 8 0
dma256 256 7 0 7 2 2 0 1 0 8 0
dma128 128 259 0 259 4 4 0 1 0 8 0
dma64 64 9 0 9 2 2 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 97 0 21 2 0 2 2 0 8 0
uaddrrnd 24 4988 0 4957 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 4988 0 4957 1 0 1 1 0 8 0
vmmpekpl 168 40248 0 40185 4 0 4 4 0 8 0
vmmpepl 168 330386 0 328124 202 73 129 129 0 357 16
vmsppl 488 4987 0 4957 6 1 5 5 0 8 0
rwobjpl 80 89953 0 88369 62 16 46 46 0 8 4
pdppl 4096 10039 0 9953 166 78 88 92 0 8 2
pvpl 32 30960 0 0 248 0 248 248 0 265 0
pmappl 256 5015 0 4968 4 0 4 4 0 8 0
extentpl 40 45 0 27 1 0 1 1 0 8 0
phpool 112 482 0 152 10 0 10 10 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: 0x7277f69f6ad0, count: -1
ddb{0}> machine ddbcpu 1
Stopped at x86_ipi_db+0x27: addq $0x8,%rsp
x86_ipi_db(ffff8000299ddff0) 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(800,3e) at comcnputc+0x250 comcn_read_reg sys/dev/ic/com.c:1655 [inline]
comcnputc(800,3e) at comcnputc+0x250 sys/dev/ic/com.c:1269
cnputc(3e) at cnputc+0x67 sys/dev/cons.c:218
db_putchar(3e) at db_putchar+0x36d sys/ddb/db_output.c:155
kprintf() at kprintf+0x29c5 sys/kern/subr_prf.c:-1
db_printf(ffffffff8334df1b) at db_printf+0x9b sys/kern/subr_prf.c:-1
fault(ffffffff8340c159) at fault+0xa7 sys/arch/amd64/amd64/trap.c:161
kpageflttrap(ffff80002a32a010,0) at kpageflttrap+0x37d sys/arch/amd64/amd64/trap.c:296
kerntrap(ffff80002a32a010) at kerntrap+0x19c sys/arch/amd64/amd64/trap.c:520
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
dt_ioctl_record_stop(ffff800001729000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593
end trace frame: 0xffff80002a32a180, count: 0
ddb{1}> trace
x86_ipi_db(ffff8000299ddff0) 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(800,3e) at comcnputc+0x250 comcn_read_reg sys/dev/ic/com.c:1655 [inline]
comcnputc(800,3e) at comcnputc+0x250 sys/dev/ic/com.c:1269
cnputc(3e) at cnputc+0x67 sys/dev/cons.c:218
db_putchar(3e) at db_putchar+0x36d sys/ddb/db_output.c:155
kprintf() at kprintf+0x29c5 sys/kern/subr_prf.c:-1
db_printf(ffffffff8334df1b) at db_printf+0x9b sys/kern/subr_prf.c:-1
fault(ffffffff8340c159) at fault+0xa7 sys/arch/amd64/amd64/trap.c:161
kpageflttrap(ffff80002a32a010,0) at kpageflttrap+0x37d sys/arch/amd64/amd64/trap.c:296
kerntrap(ffff80002a32a010) at kerntrap+0x19c sys/arch/amd64/amd64/trap.c:520
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
dt_ioctl_record_stop(ffff800001729000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593
dtioctl(11e5f,80044403,ffff80002a32a350,81,ffff80003c4402d8) at dtioctl+0x536 sys/dev/dt/dt_dev.c:325
VOP_IOCTL(fffffd8061f14798,80044403,ffff80002a32a350,81,fffffd80097fd750,ffff80003c4402d8) at VOP_IOCTL+0xac sys/kern/vfs_vops.c:264
vn_ioctl(fffffd807bdf98d8,80044403,ffff80002a32a350,ffff80003c4402d8) at vn_ioctl+0xf8 sys/kern/vfs_vnops.c:531
sys_ioctl(ffff80003c4402d8,ffff80002a32a530,ffff80002a32a480) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1
syscall(ffff80002a32a530) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a32a530) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xf21b6d946f0, count: -20