login: uvm_fault(0xfffffd807effe170, 0x0, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at socreate+0x84: cmpq $0,0(%rax)
TID PID UID PRFLAGS PFLAGS CPU COMMAND
32029 22506 0 0x2 0 0 syz-executor252658238
*377589 22506 0 0x2 0x4000000 1K syz-executor252658238
socreate(18,ffff8000211c7d98,0,29) at socreate+0x84 sys/kern/uipc_socket.c:172
sys_socket(ffff8000ffff6010,ffff8000211c7e28,ffff8000211c7e80) at sys_socket+0xd8 sys/kern/uipc_syscalls.c:96
syscall(ffff8000211c7ef0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000211c7ef0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x4f18fe68210, count: 11
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(0xfffffd807effe170, 0x0, 0, 1) -> e
ddb{1}> trace
socreate(18,ffff8000211c7d98,0,29) at socreate+0x84 sys/kern/uipc_socket.c:172
sys_socket(ffff8000ffff6010,ffff8000211c7e28,ffff8000211c7e80) at sys_socket+0xd8 sys/kern/uipc_syscalls.c:96
syscall(ffff8000211c7ef0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000211c7ef0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x4f18fe68210, count: -4
ddb{1}> show registers
rdi 0
rsi 0
rbp 0xffff8000211c7d80
rbx 0x18
rdx 0
rcx 0x29
rax 0
r8 0xffffffff81e690f0 uvm_map_inentry_pc
r9 0x24
r10 0
r11 0x719e8506aa03dd4c
r12 0xffff8000211c7d98
r13 0xffffffff8288cca0 inet6sw
r14 0
r15 0x29
rip 0xffffffff81e82144 socreate+0x84
cs 0x8
rflags 0x10286 __ALIGN_SIZE+0xf286
rsp 0xffff8000211c7d20
ss 0x10
socreate+0x84: cmpq $0,0(%rax)
ddb{1}> show proc
PROC (syz-executor252658238) pid=377589 stat=onproc
flags process=2<EXEC> proc=4000000<THREAD>
pri=32, usrpri=51, nice=20
forw=0xffffffffffffffff, list=0xffff8000ffff6d30,0xffffffff82a987b8
process=0xffff8000211b6150 user=0xffff8000211c2000, vmspace=0xfffffd807effe170
estcpu=1, cpticks=1, pctcpu=0.0
user=0, sys=1, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
22506 32029 59302 0 7 0x2 syz-executor252658238
*22506 377589 59302 0 7 0x4000002 syz-executor252658238
59302 137927 76145 0 3 0x10008a sigsusp ksh
76145 517772 18992 0 3 0x9a kqread sshd
28544 78284 1 0 3 0x100083 ttyin getty
18992 120242 1 0 3 0x88 kqread sshd
19553 296776 70114 73 3 0x1100090 kqread syslogd
70114 328237 1 0 3 0x100082 netio syslogd
28187 456185 1 0 3 0x100080 kqread resolvd
7526 445309 64533 77 3 0x100092 kqread dhcpleased
49280 97087 64533 77 3 0x100092 kqread dhcpleased
64533 513252 1 0 3 0x80 kqread dhcpleased
91267 83492 0 0 3 0x14200 bored smr
46148 485544 0 0 3 0x14200 pgzero zerothread
38773 290175 0 0 3 0x14200 aiodoned aiodoned
44686 515594 0 0 3 0x14200 syncer update
67180 368950 0 0 3 0x14200 cleaner cleaner
90062 60054 0 0 3 0x14200 reaper reaper
90814 169482 0 0 3 0x14200 pgdaemon pagedaemon
1650 343388 0 0 3 0x14200 bored viomb
89419 396056 0 0 3 0x40014200 acpi0 acpi0
45681 465408 0 0 3 0x40014200 idle1
57007 141187 0 0 3 0x14200 bored softnet
21473 15080 0 0 3 0x14200 bored systqmp
59463 420910 0 0 3 0x14200 bored systq
29891 237342 0 0 3 0x40014200 bored softclock
56585 161711 0 0 3 0x40014200 idle0
1 69016 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
Process 22506 (syz-executor252658238) thread 0xffff8000ffff6010 (377589)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82abcc60)
#0 witness_lock+0x44d
#1 kpageflttrap+0x23d sys/arch/amd64/amd64/trap.c:274
#2 kerntrap+0xef sys/arch/amd64/amd64/trap.c:318
#3 alltraps_kern_meltdown+0x7b
#4 socreate+0x84 sys/kern/uipc_socket.c:172
#5 sys_socket+0xd8 sys/kern/uipc_syscalls.c:96
#6 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#6 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#7 Xsyscall+0x128
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10143 6388K 6419K 78643K 11233 0
pcb 13 8K 8K 78643K 13 0
rtable 62 2K 2K 78643K 114 0
ifaddr 24 7K 7K 78643K 24 0
counters 40 33K 33K 78643K 40 0
ioctlops 0 0K 2K 78643K 25 0
mount 1 1K 1K 78643K 1 0
log 0 0K 0K 78643K 4 0
vnodes 1166 73K 73K 78643K 1179 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 1K 78643K 2 0
VM map 2 1K 1K 78643K 2 0
sem 2 0K 0K 78643K 2 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1697 195K 286K 78643K 12548 0
file desc 1 0K 0K 78643K 1 0
proc 55 74K 75K 78643K 226 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
in_multi 11 0K 0K 78643K 11 0
ether_multi 1 0K 0K 78643K 1 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 25 122K 122K 78643K 25 0
exec 0 0K 2K 78643K 404 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 7 26K 26K 78643K 7 0
UVM amap 83 3K 5K 78643K 2039 0
UVM aobj 3 2K 2K 78643K 3 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
NDP 3 0K 0K 78643K 3 0
temp 19 4686K 4749K 78643K 3108 0
kqueue 11 16K 18K 78643K 24 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 20 0 17 1 0 1 1 0 8 0
rtentry 112 23 0 1 1 0 1 1 0 8 0
unpcb 136 33 0 20 1 0 1 1 0 8 0
syncache 296 5 0 5 2 1 1 1 0 8 1
tcpcb 736 8 0 5 1 0 1 1 0 8 0
arp 120 2 0 0 1 0 1 1 0 8 0
inpcb 304 25 0 19 1 0 1 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 96 0 0 6 0 6 6 0 8 0
art_table 32 97 0 0 1 0 1 1 0 8 0
art_node 16 22 0 2 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 1415 0 38 87 0 87 87 0 8 0
ffsino 272 1415 0 38 92 0 92 92 0 8 0
nchpl 144 1590 0 47 58 0 58 58 0 8 0
uvmvnodes 80 1424 0 0 30 0 30 30 0 8 0
vnodes 224 1424 0 0 84 0 84 84 0 8 0
namei 1024 4177 0 4177 2 1 1 1 0 8 1
percpumem 16 32 0 0 1 0 1 1 0 8 0
scxspl 216 3744 0 3744 2 1 1 2 0 8 1
plimitpl 152 15 0 9 1 0 1 1 0 8 0
sigapl 424 300 0 273 4 0 4 4 0 8 0
futexpl 64 1 0 1 1 0 1 1 0 8 1
knotepl 120 51 0 0 2 0 2 2 0 8 0
kqueuepl 216 20 0 13 1 0 1 1 0 8 0
pipepl 336 82 0 79 2 1 1 1 0 8 0
fdescpl 496 286 0 273 3 0 3 3 0 8 0
filepl 152 1028 0 975 3 0 3 3 0 8 0
lockfpl 104 6 0 4 1 0 1 1 0 8 0
lockfspl 48 4 0 2 1 0 1 1 0 8 0
sessionpl 144 17 0 9 1 0 1 1 0 8 0
pgrppl 48 17 0 9 1 0 1 1 0 8 0
ucredpl 96 64 0 54 1 0 1 1 0 8 0
zombiepl 144 273 0 273 2 1 1 1 0 8 1
processpl 1064 300 0 273 3 0 3 3 0 8 0
procpl 672 301 0 273 3 0 3 3 0 8 0
sockpl 480 78 0 56 4 1 3 4 0 8 0
mcl8k 8192 4 0 0 1 0 1 1 0 8 0
mcl4k 4096 3 0 0 1 0 1 1 0 8 0
mcl2k 2048 70 0 0 9 0 9 9 0 8 0
mtagpl 96 3 0 0 1 0 1 1 0 8 0
mbufpl 256 118 0 0 8 0 8 8 0 8 0
bufpl 288 1946 0 84 133 0 133 133 0 8 0
anonpl 24 39484 0 37159 16 1 15 15 0 186 0
amapchunkpl 152 3760 0 3609 7 1 6 7 0 158 0
amappl16 200 25 0 25 1 1 0 1 0 8 0
amappl15 192 63 0 60 1 0 1 1 0 8 0
amappl13 176 32 0 31 2 1 1 1 0 8 0
amappl12 168 15 0 15 2 1 1 1 0 8 1
amappl11 160 41 0 31 1 0 1 1 0 8 0
amappl10 152 3 0 2 1 0 1 1 0 8 0
amappl9 144 449 0 447 1 0 1 1 0 8 0
amappl8 136 353 0 348 1 0 1 1 0 8 0
amappl7 128 61 0 57 1 0 1 1 0 8 0
amappl6 120 109 0 96 1 0 1 1 0 8 0
amappl5 112 177 0 169 1 0 1 1 0 8 0
amappl4 104 592 0 571 1 0 1 1 0 8 0
amappl3 96 116 0 107 1 0 1 1 0 8 0
amappl2 88 356 0 320 1 0 1 1 0 8 0
amappl1 80 8430 0 8067 9 0 9 9 0 8 0
amappl 88 1777 0 1710 2 0 2 2 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 2 0 0 1 0 1 1 0 8 0
uaddrrnd 24 286 0 273 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 286 0 273 1 0 1 1 0 8 0
vmmpekpl 168 6000 0 5984 1 0 1 1 0 8 0
vmmpepl 168 25275 0 24465 43 5 38 43 0 357 0
vmsppl 368 285 0 273 2 0 2 2 0 8 0
rwobjpl 56 9232 0 7276 30 1 29 29 0 8 0
pdppl 4096 579 0 546 51 18 33 41 0 8 0
pvpl 32 127328 0 123242 40 6 34 40 0 265 0
pmappl 248 285 0 273 2 1 1 2 0 8 0
extentpl 40 58 0 38 1 0 1 1 0 8 0
phpool 112 402 0 22 11 0 11 11 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp
x86_ipi_db(ffffffff828d5ff0) at x86_ipi_db+0x1a 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+0x23
end of kernel
end trace frame: 0x7f7ffffd8730, count: 12
ddb{0}> trace
x86_ipi_db(ffffffff828d5ff0) at x86_ipi_db+0x1a 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+0x23
end of kernel
end trace frame: 0x7f7ffffd8730, count: -3
ddb{0}> machine ddbcpu 1
Stopped at socreate+0x84: cmpq $0,0(%rax)
socreate(18,ffff8000211c7d98,0,29) at socreate+0x84 sys/kern/uipc_socket.c:172
sys_socket(ffff8000ffff6010,ffff8000211c7e28,ffff8000211c7e80) at sys_socket+0xd8 sys/kern/uipc_syscalls.c:96
syscall(ffff8000211c7ef0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000211c7ef0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x4f18fe68210, count: 11
ddb{1}> trace
socreate(18,ffff8000211c7d98,0,29) at socreate+0x84 sys/kern/uipc_socket.c:172
sys_socket(ffff8000ffff6010,ffff8000211c7e28,ffff8000211c7e80) at sys_socket+0xd8 sys/kern/uipc_syscalls.c:96
syscall(ffff8000211c7ef0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000211c7ef0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x4f18fe68210, count: -4
ddb{1}>