login: uvm_fault(0xfffffd806c7135d0, 0x98, 0, 1) -> e
fatal page fault in supervisor mode
trap type 6 code 0 rip ffffffff81e97628 cs 8 rflags 10246 cr2 98 cpl 0 rsp ffff80002ef9f0a0
gsbase 0xffff8000299adff0 kgsbase 0x0
panic: trap type 6, code=0, pc=ffffffff81e97628
Starting stack trace...
panic(ffffffff8347f8d1) at panic+0x1d0 sys/kern/subr_prf.c:229
kerntrap(ffff80002ef9eff0) at kerntrap+0x30b
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
dovutimens(ffff8000ffffdc90,fffffd806a55e878,ffff80002ef9f1d0) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2771
sys_futimes(ffff8000ffffdc90,ffff80002ef9f320,ffff80002ef9f270) at sys_futimes+0x208 sys/kern/vfs_syscalls.c:2813
syscall(ffff80002ef9f320) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002ef9f320) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xf48fea31f30, count: 250
End of stack trace.
WARNING: SPL NOT LOWERED ON TRAP EXIT 4 0
Stopped at alltraps_kern_meltdown+0xb8: movl %ebx,%gs:0x688
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*191686 14034 60929 0x10 0x4000000 1K syz-executor
alltraps_kern_meltdown() at alltraps_kern_meltdown+0xb8
copyout() at copyout+0x64
mmrw(20c,ffff80002a2fa140,0) at mmrw+0x3d6 sys/arch/amd64/amd64/mem.c:-1
spec_read(ffff80002a2f9f20) at spec_read+0x14b sys/kern/spec_vnops.c:215
VOP_READ(fffffd806e6da120,ffff80002a2fa140,0,fffffd80097fd410) at VOP_READ+0x101 sys/kern/vfs_vops.c:227
vn_read(fffffd806c4a4c20,ffff80002a2fa140,1) at vn_read+0x17b sys/kern/vfs_vnops.c:375
dofilereadv(ffff80003c42b788,6,ffff80002a2fa140,1,ffff80002a2fa200) at dofilereadv+0x25a sys/kern/sys_generic.c:252
sys_preadv(ffff80003c42b788,ffff80002a2fa2b0,ffff80002a2fa200) at sys_preadv+0xe3 sys/kern/vfs_syscalls.c:3366
syscall(ffff80002a2fa2b0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a2fa2b0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x6ff6d7f1660, count: 5
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}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
*cpu1: uvm_fault(0xfffffd806c7135d0, 0x98, 0, 1) -> e
ddb{1}> trace
alltraps_kern_meltdown() at alltraps_kern_meltdown+0xb8
copyout() at copyout+0x64
mmrw(20c,ffff80002a2fa140,0) at mmrw+0x3d6 sys/arch/amd64/amd64/mem.c:-1
spec_read(ffff80002a2f9f20) at spec_read+0x14b sys/kern/spec_vnops.c:215
VOP_READ(fffffd806e6da120,ffff80002a2fa140,0,fffffd80097fd410) at VOP_READ+0x101 sys/kern/vfs_vops.c:227
vn_read(fffffd806c4a4c20,ffff80002a2fa140,1) at vn_read+0x17b sys/kern/vfs_vnops.c:375
dofilereadv(ffff80003c42b788,6,ffff80002a2fa140,1,ffff80002a2fa200) at dofilereadv+0x25a sys/kern/sys_generic.c:252
sys_preadv(ffff80003c42b788,ffff80002a2fa2b0,ffff80002a2fa200) at sys_preadv+0xe3 sys/kern/vfs_syscalls.c:3366
syscall(ffff80002a2fa2b0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a2fa2b0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x6ff6d7f1660, count: -10
ddb{1}> show registers
rdi 0
rsi 0
rbp 0xffff80002a2f9d10
rbx 0
rdx 0xffff8000015cea40
rcx 0xffff80003c42b788
rax 0x2a
r8 0xffff80002a2f9c40
r9 0x1
r10 0x1fe2da545ba8ca7b
r11 0xb14935680d87fd6e
r12 0x20000034f480
r13 0x1000 __ALIGN_SIZE
r14 0xffff80002a2fa140
r15 0
rip 0xffffffff833bd20b alltraps_kern_meltdown+0xb8
cs 0x8
rflags 0x246
rsp 0xffff80002a2f9c90
ss 0x10
alltraps_kern_meltdown+0xb8: movl %ebx,%gs:0x688
ddb{1}> show proc
PROC (syz-executor) tid=191686 pid=14034 tcnt=3 stat=onproc
flags process=10<SUGID> proc=4000000<THREAD>
runpri=86, usrpri=80, slppri=36, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff80003c42ad28,0xffff80003c42a2d8
process=0xffff80002a38ce88 user=0xffff80002a2f5000, vmspace=0xfffffd80664db5e0
estcpu=30, cpticks=2, pctcpu=0.2, user=0, sys=2, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
84030 361996 33831 0 2 0 syz-executor
90561 393476 31588 0 2 0 syz-executor
90561 371503 31588 0 3 0x4000000 sbar syz-executor
90561 472218 31588 0 2 0x4000000 syz-executor
1329 174892 51571 0 2 0 syz-executor
1329 25456 51571 0 3 0x4000080 kqsel syz-executor
1329 195838 51571 0 3 0x4000080 fsleep syz-executor
1329 417986 51571 0 3 0x4000080 fsleep syz-executor
64698 158472 91462 0 2 0x2 ndp
91462 144508 40060 0 3 0x10008a sigsusp sh
14034 389093 56677 60929 3 0x10 vmmaplk syz-executor
*14034 191686 56677 60929 7 0x4000010 syz-executor
14034 344842 56677 60929 2 0x4000010 syz-executor
51571 430292 24933 0 2 0xc82 syz-executor
40060 435087 24933 0 3 0x82 wait syz-executor
69903 243823 1 0 2 0x100083 getty
50829 395607 0 0 3 0x14280 nfsidl nfsio
61103 146449 0 0 3 0x14280 nfsidl nfsio
6613 8692 0 0 3 0x14280 nfsidl nfsio
93587 41964 0 0 3 0x14280 nfsidl nfsio
39738 159002 0 0 3 0x14280 nfsidl nfsio
11629 487926 0 0 3 0x14280 nfsidl nfsio
4555 126062 0 0 3 0x14280 nfsidl nfsio
18528 350900 0 0 3 0x14280 nfsidl nfsio
6541 128759 0 0 3 0x14280 nfsidl nfsio
76793 43826 0 0 3 0x14280 nfsidl nfsio
44647 154071 0 0 3 0x14280 nfsidl nfsio
77876 253965 0 0 3 0x14280 nfsidl nfsio
9585 174391 0 0 3 0x14280 nfsidl nfsio
41060 328057 0 0 3 0x14280 nfsidl nfsio
48269 509258 0 0 3 0x14280 nfsidl nfsio
19316 245499 0 0 3 0x14280 nfsidl nfsio
58913 192520 0 0 3 0x14280 nfsidl nfsio
87814 61002 0 0 3 0x14280 nfsidl nfsio
74440 162756 0 0 3 0x14280 nfsidl nfsio
38814 473751 0 0 3 0x14280 nfsidl nfsio
61726 438160 0 0 3 0x14200 acct acct
31588 61038 24933 0 2 0xc82 syz-executor
33831 221350 24933 0 2 0xc82 syz-executor
67021 413547 24933 0 2 0xc82 syz-executor
93671 299595 24933 0 2 0x3 syz-executor
68837 471318 24933 0 2 0x3 syz-executor
56677 244096 24933 0 2 0xc82 syz-executor
24933 235407 93602 0 2 0x82 syz-executor
93602 443143 88816 0 3 0x10008a sigsusp ksh
88816 199620 5353 0 3 0x98 kqread sshd-session
5353 251148 88428 0 3 0x92 kqread sshd-session
88428 226054 1 0 3 0x88 kqread sshd
52506 464141 54933 74 3 0x1100092 bpf pflogd
54933 184361 1 0 3 0x80 sbwait pflogd
77211 4730 2475 73 3 0x1100090 kqread syslogd
2475 285089 1 0 3 0x100082 sbwait syslogd
664 474416 1 0 3 0x100080 kqread resolvd
67978 198808 95248 77 3 0x100092 kqread dhcpleased
24312 50465 95248 77 3 0x100092 kqread dhcpleased
95248 423808 1 0 3 0x80 kqread dhcpleased
28421 523234 0 0 3 0x14200 bored smr
20057 360320 0 0 2 0x14200 zerothread
20607 148499 0 0 3 0x14200 aiodoned aiodoned
74999 315329 0 0 2 0x14e00 update
8612 484811 0 0 3 0x14200 cleaner cleaner
3007 279115 0 0 3 0x14200 kmmaplk reaper
37293 355153 0 0 3 0x14200 pgdaemon pagedaemon
57025 268168 0 0 3 0x14200 bored viomb
76862 378071 0 0 3 0x40014200 acpi0 acpi0
58369 213851 0 0 3 0x40014200 idle1
50649 222366 0 0 3 0x14200 bored softnet1
86158 404686 0 0 2 0x14200 softnet0
41067 377943 0 0 2 0x14200 systqmp
26153 148153 0 0 3 0x14200 bored systq
92008 85250 0 0 2 0x14200 softclockmp
64523 176653 0 0 3 0x40014200 tmoslp softclock
64132 324024 0 0 3 0x40014200 idle0
1 260926 0 0 3 0x82 wait init
0 0 -1 0 3 0x10010200 scheduler swapper
ddb{1}> show all locks
Process 90561 (syz-executor) thread 0xffff8000ffffdc90 (371503)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff839d31c0)
#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 64698 (ndp) thread 0xffff80003c42a560 (158472)
exclusive rwlock kmmaplk r = 0 (0xffffffff83a390e0)
#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 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5171
#3 uvm_map_extract+0x5c7 sys/uvm/uvm_map.c:4278
#4 sys_kbind+0x6e4 sys/uvm/uvm_mmap.c:1279
#5 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#5 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
#6 Xsyscall+0x128
exclusive rwlock vmmaplk r = 0 (0xfffffd80664db128)
#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 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5171
#3 uvm_map_extract+0x17c sys/uvm/uvm_map.c:4242
#4 sys_kbind+0x6e4 sys/uvm/uvm_mmap.c:1279
#5 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#5 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
#6 Xsyscall+0x128
Process 14034 (syz-executor) thread 0xffff80003c42b788 (191686)
exclusive rwlock vmmaplk r = 0 (0xfffffd80664db6e0)
#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 kpageflttrap+0x2f4 sys/arch/amd64/amd64/trap.c:283
#6 kerntrap+0x19d sys/arch/amd64/amd64/trap.c:528
#7 alltraps_kern_meltdown+0x7b
#8 copyout+0x64
#9 mmrw+0x3d6 sys/arch/amd64/amd64/mem.c:-1
#10 spec_read+0x14b sys/kern/spec_vnops.c:215
#11 VOP_READ+0x101 sys/kern/vfs_vops.c:227
#12 vn_read+0x17b sys/kern/vfs_vnops.c:375
#13 dofilereadv+0x25a sys/kern/sys_generic.c:252
#14 sys_preadv+0xe3 sys/kern/vfs_syscalls.c:3366
#15 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#15 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
#16 Xsyscall+0x128
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 11069 12159K 12464K 166960K 12718 0
pcb 17 12K 12K 166960K 91 0
rtable 183 5K 7K 166960K 641 0
pf 33 17K 24K 166960K 134 0
ifaddr 37 6K 7K 166960K 98 0
ifgroup 51 2K 2K 166960K 128 0
sysctl 4 1K 9K 166960K 11 0
counters 68 36K 37K 166960K 114 0
ioctlops 0 0K 4K 166960K 1570 0
iov 1 2K 12K 166960K 13 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1292 81K 82K 166960K 1756 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 5K 166960K 4 0
VM map 2 1K 1K 166960K 2 0
sem 12 0K 0K 166960K 55 0
dirhash 12 2K 2K 166960K 12 0
ACPI 1692 195K 286K 166960K 12470 0
file desc 16 57K 93K 166960K 614 0
sigio 0 0K 0K 166960K 6 0
proc 73 115K 164K 166960K 860 0
subproc 72 4K 4K 166960K 153 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 48 0
in_multi 78 5K 6K 166960K 204 0
ether_multi 1 0K 0K 166960K 2 0
mrt 0 0K 0K 166960K 19 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 73 334K 334K 166960K 73 0
exec 0 0K 1K 166960K 540 0
fusefs mount 1 32K 32K 166960K 1 0
tdb 3 0K 0K 166960K 3 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 213 167K 185K 166960K 6852 0
UVM aobj 12 4K 4K 166960K 14 0
pinsyscall 42 84K 104K 166960K 2029 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 0K 166960K 19 0
NDP 15 0K 1K 166960K 66 0
temp 49 9080K 9147K 166960K 31493 0
kqueue 13 20K 29K 166960K 82 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 26 0 0 1 0 1 1 0 8 0
rtpcb 120 99 0 96 2 1 1 2 0 8 0
rtentry 176 216 0 134 5 0 5 5 0 8 0
unpcb 144 266 0 249 5 4 1 4 0 8 0
syncache 336 9 0 9 4 3 1 1 0 8 1
tcpqe 32 2 0 2 1 0 1 1 0 8 1
tcpcb 736 115 0 110 4 2 2 4 0 8 1
arp 136 36 0 20 1 0 1 1 0 8 0
inpcb 328 520 0 510 12 8 4 7 0 8 3
nd6 152 52 0 35 1 0 1 1 0 8 0
pkpcb 40 4 0 4 2 2 0 1 0 8 0
kcovpl 48 17 0 9 1 0 1 1 0 8 0
ppxss 1192 7 0 7 2 1 1 1 0 8 1
pppxif 1576 1 0 1 1 1 0 1 0 8 0
pfstscr 40 1 0 1 1 1 0 1 0 8 0
pffrag 232 5 0 0 1 0 1 1 0 482 0
pffrnode 88 5 0 0 1 0 1 1 0 8 0
pffrent 40 8 0 3 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
pfsrclim 320 4 0 4 2 1 1 1 0 8 1
pfanchor 1288 5 0 1 1 0 1 1 0 8 0
pfqueue 320 2 0 2 2 1 1 1 0 8 1
pfstitem 24 50 0 15 1 0 1 1 0 8 0
pfstkey 128 52 0 17 2 0 2 2 0 8 0
pfstate 448 51 0 16 6 0 6 6 0 8 0
pfrule 1360 23 0 18 2 1 1 2 0 8 0
rttmr 136 2 0 2 1 1 0 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 942 0 579 30 6 24 29 0 8 1
art_table 40 943 0 579 5 0 5 5 0 8 0
art_node 32 216 0 143 1 0 1 1 0 8 0
sysvmsgpl 40 8 0 3 1 0 1 1 0 8 0
semupl 112 1 0 1 1 1 0 1 0 8 0
semapl 112 53 0 43 1 0 1 1 0 8 0
shmpl 112 11 0 2 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 2265 0 787 93 0 93 93 0 8 0
ffsino 296 2265 0 787 114 0 114 114 0 8 0
nchpl 144 2962 0 1224 65 0 65 65 0 8 0
vnodes 216 2603 0 0 145 0 145 145 0 8 0
namei 1024 10721 0 10721 5 4 1 2 0 8 1
percpumem 16 72 0 23 1 0 1 1 0 8 0
kstatmem 264 67 0 42 3 1 2 3 0 8 0
scsiplug 72 3 0 3 3 3 0 1 0 8 0
scxspl 216 10627 0 10627 9 8 1 8 1 8 1
plimitpl 152 61 0 44 1 0 1 1 0 8 0
sigapl 424 939 0 871 10 1 9 9 0 8 1
knotepl 120 322 0 0 10 0 10 10 0 8 0
kqueuepl 224 157 0 147 3 1 2 3 0 8 1
pipepl 344 266 0 239 6 0 6 6 0 8 3
fdescpl 528 901 0 871 3 0 3 3 0 8 0
filepl 160 4302 0 4087 18 5 13 15 0 8 3
lockfpl 104 124 0 122 1 0 1 1 0 8 0
lockfspl 48 59 0 57 1 0 1 1 0 8 0
sessionpl 144 52 0 43 1 0 1 1 0 8 0
pgrppl 48 135 0 118 1 0 1 1 0 8 0
ucredpl 104 368 0 354 1 0 1 1 0 8 0
zombiepl 144 956 0 955 1 0 1 1 0 8 0
processpl 1232 939 0 871 7 1 6 6 0 8 0
procpl 664 1544 0 1468 8 0 8 8 0 8 1
sosppl 176 1 0 1 1 1 0 1 0 8 0
sockpl 752 900 0 870 27 19 8 17 0 8 5
mcl64k 65536 3 0 0 1 0 1 1 0 8 0
mcl8k 8192 3 0 0 1 0 1 1 0 8 0
mcl4k 4096 126 0 0 16 0 16 16 0 8 0
mcl2k 2048 24 0 0 3 0 3 3 0 8 0
mtagpl 96 3 0 0 1 0 1 1 0 8 0
mbufpl 256 164 0 0 11 0 11 11 0 8 0
bufpl 280 3616 0 104 251 0 251 251 0 8 0
anonpl 32 7486 0 0 61 0 61 61 0 246 0
amapchunkpl 152 20595 0 20204 37 11 26 28 0 158 6
amappl16 200 1646 0 1566 18 13 5 15 0 8 0
amappl15 192 4 0 4 1 1 0 1 0 8 0
amappl14 184 536 0 534 1 0 1 1 0 8 0
amappl13 176 147 0 134 1 0 1 1 0 8 0
amappl12 168 1187 0 1159 2 0 2 2 0 8 0
amappl11 160 5 0 5 1 1 0 1 0 8 0
amappl10 152 62 0 48 1 0 1 1 0 8 0
amappl9 144 273 0 273 1 1 0 1 0 8 0
amappl8 136 135 0 132 1 0 1 1 0 8 0
amappl7 128 206 0 192 1 0 1 1 0 8 0
amappl6 120 266 0 262 1 0 1 1 0 8 0
amappl5 112 101 0 90 1 0 1 1 0 8 0
amappl4 104 335 0 314 1 0 1 1 0 8 0
amappl3 96 4151 0 4058 4 1 3 4 0 8 0
amappl2 88 645 0 582 2 0 2 2 0 8 0
amappl1 80 13688 0 13058 23 6 17 17 0 8 0
amappl 88 5882 0 5744 6 2 4 5 0 92 0
uvmvnodes 80 115 0 1 3 0 3 3 0 8 0
dma16384 16384 1 0 1 1 0 1 1 0 8 1
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 7 0 7 2 2 0 1 0 8 0
dma128 128 255 0 255 2 2 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 13 0 2 1 0 1 1 0 8 0
uaddrrnd 24 901 0 871 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 901 0 871 1 0 1 1 0 8 0
vmmpekpl 168 9787 0 9742 3 0 3 3 0 8 0
vmmpepl 168 66128 0 64244 116 17 99 99 0 357 3
vmsppl 488 900 0 870 6 1 5 5 0 8 0
rwobjpl 80 20599 0 19479 33 5 28 28 0 8 1
pdppl 4096 1809 0 1740 123 46 77 85 0 8 8
pvpl 32 14341 0 0 116 0 116 116 0 265 0
pmappl 256 900 0 870 3 0 3 3 0 8 0
extentpl 40 45 0 27 1 0 1 1 0 8 0
phpool 112 311 0 65 8 0 8 8 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x27: addq $0x8,%rsp
x86_ipi_db(ffffffff83898ff0) 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
__mp_lock(ffffffff839d29c0) at __mp_lock+0x190 __mp_lock_spin sys/kern/kern_lock.c:143 [inline]
__mp_lock(ffffffff839d29c0) at __mp_lock+0x190 sys/kern/kern_lock.c:173
softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83
dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862
Xsoftclock() at Xsoftclock+0x27
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0xf kd_curproc sys/dev/kcov.c:580 [inline]
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0xf sys/dev/kcov.c:153
pool_put(ffffffff8399a8e0,fffffd806c49b908) at pool_put+0xba sys/kern/subr_pool.c:805
uvm_unmap_detach(ffff80003c3d9540,0) at uvm_unmap_detach+0x8a sys/uvm/uvm_map.c:1359
uvm_map_teardown(fffffd806c7137b8) at uvm_map_teardown+0x360 sys/uvm/uvm_map.c:2536
exit1(ffff8000367ad4e8,0,0,1) at exit1+0x6fc sys/kern/kern_exit.c:260
sys_exit(ffff8000367ad4e8,ffff80003c3d9710,ffff80003c3d9660) at sys_exit+0x1a sys/kern/kern_exit.c:-1
syscall(ffff80003c3d9710) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c3d9710) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
end trace frame: 0xffff80003c3d9790, count: 0
ddb{0}> trace
x86_ipi_db(ffffffff83898ff0) 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
__mp_lock(ffffffff839d29c0) at __mp_lock+0x190 __mp_lock_spin sys/kern/kern_lock.c:143 [inline]
__mp_lock(ffffffff839d29c0) at __mp_lock+0x190 sys/kern/kern_lock.c:173
softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83
dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862
Xsoftclock() at Xsoftclock+0x27
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0xf kd_curproc sys/dev/kcov.c:580 [inline]
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0xf sys/dev/kcov.c:153
pool_put(ffffffff8399a8e0,fffffd806c49b908) at pool_put+0xba sys/kern/subr_pool.c:805
uvm_unmap_detach(ffff80003c3d9540,0) at uvm_unmap_detach+0x8a sys/uvm/uvm_map.c:1359
uvm_map_teardown(fffffd806c7137b8) at uvm_map_teardown+0x360 sys/uvm/uvm_map.c:2536
exit1(ffff8000367ad4e8,0,0,1) at exit1+0x6fc sys/kern/kern_exit.c:260
sys_exit(ffff8000367ad4e8,ffff80003c3d9710,ffff80003c3d9660) at sys_exit+0x1a sys/kern/kern_exit.c:-1
syscall(ffff80003c3d9710) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c3d9710) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7677d62be850, count: -15
ddb{0}> machine ddbcpu 1
Stopped at alltraps_kern_meltdown+0xb8: movl %ebx,%gs:0x688
alltraps_kern_meltdown() at alltraps_kern_meltdown+0xb8
copyout() at copyout+0x64
mmrw(20c,ffff80002a2fa140,0) at mmrw+0x3d6 sys/arch/amd64/amd64/mem.c:-1
spec_read(ffff80002a2f9f20) at spec_read+0x14b sys/kern/spec_vnops.c:215
VOP_READ(fffffd806e6da120,ffff80002a2fa140,0,fffffd80097fd410) at VOP_READ+0x101 sys/kern/vfs_vops.c:227
vn_read(fffffd806c4a4c20,ffff80002a2fa140,1) at vn_read+0x17b sys/kern/vfs_vnops.c:375
dofilereadv(ffff80003c42b788,6,ffff80002a2fa140,1,ffff80002a2fa200) at dofilereadv+0x25a sys/kern/sys_generic.c:252
sys_preadv(ffff80003c42b788,ffff80002a2fa2b0,ffff80002a2fa200) at sys_preadv+0xe3 sys/kern/vfs_syscalls.c:3366
syscall(ffff80002a2fa2b0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a2fa2b0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x6ff6d7f1660, count: 5
ddb{1}> trace
alltraps_kern_meltdown() at alltraps_kern_meltdown+0xb8
copyout() at copyout+0x64
mmrw(20c,ffff80002a2fa140,0) at mmrw+0x3d6 sys/arch/amd64/amd64/mem.c:-1
spec_read(ffff80002a2f9f20) at spec_read+0x14b sys/kern/spec_vnops.c:215
VOP_READ(fffffd806e6da120,ffff80002a2fa140,0,fffffd80097fd410) at VOP_READ+0x101 sys/kern/vfs_vops.c:227
vn_read(fffffd806c4a4c20,ffff80002a2fa140,1) at vn_read+0x17b sys/kern/vfs_vnops.c:375
dofilereadv(ffff80003c42b788,6,ffff80002a2fa140,1,ffff80002a2fa200) at dofilereadv+0x25a sys/kern/sys_generic.c:252
sys_preadv(ffff80003c42b788,ffff80002a2fa2b0,ffff80002a2fa200) at sys_preadv+0xe3 sys/kern/vfs_syscalls.c:3366
syscall(ffff80002a2fa2b0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a2fa2b0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x6ff6d7f1660, count: -10