uvm_fault(0xffffef007efcdba0, 0x9fc00, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at uvm_fault_upper_lookup+0x18b: movq 0(%r14),%rax
TID PID UID PRFLAGS PFLAGS CPU COMMAND
* 54639 52312 0 0x40 0 1 syz-executor
12602 55835 32767 0x10 0 0 syz-executor
uvm_fault_upper_lookup(ffff80003c42bc50,ffff80003c42bc88,ffff80003c42bb50,ffff80003c42bbd0) at uvm_fault_upper_lookup+0x18b sys/uvm/uvm_fault.c:968
uvm_fault(ffffef007efcdba0,d6c44f33000,0,1) at uvm_fault+0x159 sys/uvm/uvm_fault.c:632
upageflttrap(ffff80003c42bdf0,d6c44f33918) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
usertrap(ffff80003c42bdf0) at usertrap+0x430 sys/arch/amd64/amd64/trap.c:640
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7b6a249adee0, count: 10
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(0xffffef007efcdba0, 0x9fc00, 0, 1) -> e
ddb{1}> show kasan
No such command
ddb{1}> trace
uvm_fault_upper_lookup(ffff80003c42bc50,ffff80003c42bc88,ffff80003c42bb50,ffff80003c42bbd0) at uvm_fault_upper_lookup+0x18b sys/uvm/uvm_fault.c:968
uvm_fault(ffffef007efcdba0,d6c44f33000,0,1) at uvm_fault+0x159 sys/uvm/uvm_fault.c:632
upageflttrap(ffff80003c42bdf0,d6c44f33918) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
usertrap(ffff80003c42bdf0) at usertrap+0x430 sys/arch/amd64/amd64/trap.c:640
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7b6a249adee0, count: -5
ddb{1}> show registers
rdi 0
rsi 0x3
rbp 0xffff80003c42bb40
rbx 0
rdx 0
rcx 0xffff80003bbdd250
rax 0xffff80003c42bb50
r8 0xffffffff81ecdfe0 uvm_map_inentry_sp
r9 0
r10 0xd409377e6230058
r11 0xc225e482ad34e723
r12 0xffff80003c42bc88
r13 0xd6c44f30000
r14 0x9fc00 acpi_pdirpa+0x8ba71
r15 0x3
rip 0xffffffff82b6db2b uvm_fault_upper_lookup+0x18b
cs 0x8
rflags 0x10293 __ALIGN_SIZE+0xf293
rsp 0xffff80003c42bab0
ss 0
uvm_fault_upper_lookup+0x18b: movq 0(%r14),%rax
ddb{1}> show proc
PROC (syz-executor) tid=54639 pid=52312 tcnt=1 stat=onproc
flags process=40<PPWAIT> proc=0
runpri=51, usrpri=51, slppri=32, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff80003bbdcd20,0xffffffff839e66e8
process=0xffff80003afc1360 user=0xffff80003c426000, vmspace=0xffffef007efcdba0
estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0
ddb{1}> ps
PID TID PPID UID S PRLAGS PFLAGS WAIT COMMAND
*52312 54639 41976 0 7 0x40 0 syz-executor
63947 90080 76048 32767 2 0x10 0 syz-executor
63947 216344 76048 32767 3 0x10 0x4000080 fsleep syz-executor
63947 75006 76048 32767 3 0x10 0x4000080 fsleep syz-executor
63947 121143 76048 32767 3 0x10 0x4000080 fsleep syz-executor
55835 12602 6997 32767 7 0x10 0 syz-executor
55835 189619 6997 32767 2 0x10 0x4000080 syz-executor
23376 312949 42421 32767 2 0x10 0 syz-executor
23376 429405 42421 32767 3 0x10 0x4000080 fsleep syz-executor
23376 290720 42421 32767 2 0x10 0x4000000 syz-executor
79171 427879 37232 32767 2 0x10 0 syz-executor
79171 90147 37232 32767 3 0x10 0x4000080 fsleep syz-executor
43537 128561 17864 32767 2 0x10 0 syz-executor
43537 64216 17864 32767 3 0x10 0x4000080 fsleep syz-executor
38222 343150 29981 0 2 0x100002 0 ndp
29981 146166 52749 0 3 0x100002 0x88 sigsusp sh
10390 392281 49748 32767 2 0x10 0 syz-executor
10390 388401 49748 32767 3 0x10 0x4000080 fsleep syz-executor
10390 463238 49748 32767 3 0x10 0x4000080 fsleep syz-executor
41976 235502 11488 0 3 0x80 0 ppwait syz-executor
6997 327256 70888 32767 3 0x10 0x80 nanoslp syz-executor
76048 251272 44522 32767 3 0x10 0x80 nanoslp syz-executor
42421 340663 35911 32767 3 0x10 0x80 nanoslp syz-executor
37232 313540 8679 32767 3 0x10 0x80 nanoslp syz-executor
17864 296598 63815 32767 3 0x10 0x80 nanoslp syz-executor
52749 25442 95737 0 3 0 0x80 wait syz-executor
49748 471942 82607 32767 3 0x10 0x80 nanoslp syz-executor
11488 32990 96480 0 3 0x2 0x80 wait syz-executor
70888 437010 96480 0 3 0x2 0x80 wait syz-executor
44522 503396 96480 0 3 0x2 0x80 wait syz-executor
35911 267532 96480 0 3 0x2 0x80 wait syz-executor
8679 408432 96480 0 3 0x2 0x80 wait syz-executor
63815 98148 96480 0 3 0x2 0x80 wait syz-executor
82607 269355 96480 0 3 0x2 0x80 wait syz-executor
95737 136918 96480 0 3 0x2 0x80 wait syz-executor
96480 432290 59329 0 3 0x2 0x80 kqread syz-executor
59329 519488 88476 0 3 0x100002 0x88 sigsusp ksh
88476 263847 21294 0 3 0x10 0x88 kqread sshd-session
21294 213057 36631 0 3 0x12 0x80 kqread sshd-session
88500 127301 1 0 3 0x100003 0x80 ttyin getty
36631 45458 1 0 3 0 0x88 kqread sshd
22504 403936 82466 73 3 0x1100010 0x80 kqread syslogd
82466 427620 1 0 3 0x100002 0x80 sbwait syslogd
49135 226299 1 0 3 0x100000 0x80 kqread resolvd
94755 240835 55194 77 3 0x100012 0x80 kqread dhcpleased
48909 172574 55194 77 3 0x100012 0x80 kqread dhcpleased
55194 400723 1 0 3 0 0x80 kqread dhcpleased
59683 470169 0 0 3 0x14000 0x200 bored smr
25214 171853 0 0 2 0x14000 0x200 zerothread
57782 355543 0 0 3 0x14000 0x200 aiodoned aiodoned
90615 306678 0 0 3 0x14000 0x200 syncer update
77905 56258 0 0 3 0x14000 0x200 cleaner cleaner
45776 185144 0 0 3 0x14000 0x200 reaper reaper
68643 116414 0 0 3 0x14000 0x200 pgdaemon pagedaemon
82631 496002 0 0 3 0x14000 0x200 bored viomb
55151 375441 0 0 3 0x14000 0x40000200 acpi0 acpi0
52877 224324 0 0 3 0x14000 0x40000200 idle1
4162 407919 0 0 3 0x14000 0x200 bored softnet1
70339 356961 0 0 3 0x14000 0x200 bored softnet0
18897 463807 0 0 3 0x14000 0x200 smrbar systqmp
54441 403721 0 0 3 0x14000 0x200 bored systq
51236 412267 0 0 3 0x14000 0x200 tmoslp softclockmp
7150 267964 0 0 3 0x14000 0x40000200 tmoslp softclock
7553 8239 0 0 3 0x14000 0x40000200 idle0
1 499312 0 0 3 0x2 0x80 wait init
0 0 -1 0 3 0x10000 0x200 scheduler swapper
ddb{1}> show all locks
Process 52312 (syz-executor) thread 0xffff80003bbdd250 (54639)
shared rwlock amaplk r = 0 (0xffffef006d4a67d0)
#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_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 (0xffffef007efcdca0)
#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
Process 63947 (syz-executor) thread 0xffff80003bbdc2c0 (216344)
exclusive rwlock kobjlk r = 0 (0xffffffff83a33748)
#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_unmap_kill_entry_withlock+0x140 sys/uvm/uvm_map.c:1873
#3 uvm_unmap_remove+0x6c2 sys/uvm/uvm_map.c:2008
#4 uvm_unmap+0xa7 vm_map_unlock_ln sys/uvm/uvm_map.c:-1 [inline]
#4 uvm_unmap+0xa7 sys/uvm/uvm_map.c:1799
#5 km_free+0x85 sys/uvm/uvm_km.c:714
#6 pipe_destroy+0x265 pipe_buffer_free sys/kern/sys_pipe.c:768 [inline]
#6 pipe_destroy+0x265 sys/kern/sys_pipe.c:811
#7 pipe_close+0x43 sys/kern/sys_pipe.c:749
#8 fdrop+0x121 sys/kern/kern_descrip.c:1281
#9 dopipe+0x480 sys/kern/sys_pipe.c:224
#10 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#10 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
#11 Xsyscall+0x128
exclusive rwlock kmmaplk r = 0 (0xffffffff83b00a00)
#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:5170
#3 uvm_unmap+0x7d sys/uvm/uvm_map.c:1798
#4 km_free+0x85 sys/uvm/uvm_km.c:714
#5 pipe_destroy+0x265 pipe_buffer_free sys/kern/sys_pipe.c:768 [inline]
#5 pipe_destroy+0x265 sys/kern/sys_pipe.c:811
#6 pipe_close+0x43 sys/kern/sys_pipe.c:749
#7 fdrop+0x121 sys/kern/kern_descrip.c:1281
#8 dopipe+0x480 sys/kern/sys_pipe.c:224
#9 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#9 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
#10 Xsyscall+0x128
exclusive rwlock pipelk r = 0 (0xffffef006d460138)
#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 pipe_destroy+0x3b pipe_wakeup sys/kern/sys_pipe.c:-1 [inline]
#2 pipe_destroy+0x3b sys/kern/sys_pipe.c:788
#3 pipe_close+0x43 sys/kern/sys_pipe.c:749
#4 fdrop+0x121 sys/kern/kern_descrip.c:1281
#5 dopipe+0x480 sys/kern/sys_pipe.c:224
#6 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#6 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
#7 Xsyscall+0x128
Process 18897 (systqmp) thread 0xffff800045ffea60 (463807)
shared rwlock systqmp r = 0 (0xffffffff838e42b8)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 taskq_thread+0x12a sys/kern/kern_task.c:442
#2 proc_trampoline+0x10
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 11047 12018K 12034K 166960K 12138 0
pcb 17 12K 12K 166960K 17 0
rtable 233 6K 6K 166960K 343 0
pf 31 16K 16K 166960K 31 0
ifaddr 42 7K 7K 166960K 44 0
ifgroup 50 2K 2K 166960K 50 0
sysctl 1 1K 9K 166960K 5 0
counters 70 37K 37K 166960K 70 0
ioctlops 0 0K 2K 166960K 29 0
iov 0 0K 12K 166960K 1 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1287 81K 81K 166960K 1352 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 1K 166960K 2 0
VM map 2 1K 1K 166960K 2 0
sem 2 0K 0K 166960K 2 0
dirhash 12 2K 2K 166960K 12 0
ACPI 1734 201K 291K 166960K 11964 0
file desc 27 101K 129K 166960K 150 0
sigio 0 0K 0K 166960K 1 0
proc 58 99K 163K 166960K 496 0
subproc 72 4K 4K 166960K 72 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
in_multi 99 7K 7K 166960K 99 0
ether_multi 1 0K 0K 166960K 1 0
mrt 0 0K 0K 166960K 1 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 43 201K 201K 166960K 43 0
exec 0 0K 1K 166960K 366 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 249 161K 169K 166960K 2925 0
UVM aobj 3 2K 2K 166960K 3 0
pinsyscall 49 98K 114K 166960K 1255 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 0K 166960K 2 0
NDP 27 2K 2K 166960K 27 0
temp 37 9114K 9120K 166960K 3801 0
kqueue 13 20K 22K 166960K 27 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 28 0 0 1 0 1 1 0 8 0
rtpcb 120 36 0 32 1 0 1 1 0 8 0
rtentry 176 109 0 1 5 0 5 5 0 8 0
unpcb 144 37 0 22 1 0 1 1 0 8 0
syncache 336 4 0 4 1 0 1 1 0 8 1
tcpcb 736 12 0 8 1 0 1 1 0 8 0
arp 136 18 0 0 1 0 1 1 0 8 0
inpcb 328 73 0 64 2 0 2 2 0 8 1
nd6 152 22 0 0 1 0 1 1 0 8 0
kcovpl 48 8 0 0 1 0 1 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 450 0 0 29 0 29 29 0 8 0
art_table 40 451 0 0 5 0 5 5 0 8 0
art_node 32 109 0 10 1 0 1 1 0 8 0
sysvmsgpl 40 2 0 2 1 0 1 1 0 8 1
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 1563 0 104 92 0 92 92 0 8 0
ffsino 296 1563 0 104 113 0 113 113 0 8 0
nchpl 144 1762 0 74 63 0 63 63 0 8 0
vnodes 216 1644 0 0 92 0 92 92 0 8 0
namei 1024 5258 0 5258 2 0 2 2 0 8 2
percpumem 16 51 0 0 1 0 1 1 0 8 0
kstatmem 264 25 0 0 2 0 2 2 0 8 0
scxspl 216 6212 0 6212 3 2 1 3 1 8 1
plimitpl 152 37 0 13 1 0 1 1 0 8 0
sigapl 424 451 0 396 7 0 7 7 0 8 0
knotepl 120 274 0 0 9 0 9 9 0 8 0
kqueuepl 224 24 0 15 1 0 1 1 0 8 0
pipepl 344 189 0 161 3 0 3 3 0 8 0
fdescpl 528 435 0 396 4 0 4 4 0 8 0
filepl 160 1596 0 1386 10 0 10 10 0 8 1
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 24 0 7 1 0 1 1 0 8 0
pgrppl 48 32 0 7 1 0 1 1 0 8 0
ucredpl 104 107 0 90 1 0 1 1 0 8 0
zombiepl 144 396 0 396 1 0 1 1 0 8 1
processpl 1232 451 0 396 5 0 5 5 0 8 0
procpl 664 473 0 408 6 0 6 6 0 8 0
sockpl 752 146 0 118 4 0 4 4 0 8 1
mcl64k 65536 1 0 0 1 0 1 1 0 8 0
mcl8k 8192 2 0 0 1 0 1 1 0 8 0
mcl4k 4096 120 0 0 15 0 15 15 0 8 0
mcl2k 2048 9 0 0 2 0 2 2 0 8 0
mextrefs 64 12 0 0 1 0 1 1 0 8 0
mtagpl 96 1 0 0 1 0 1 1 0 8 0
mbufpl 256 159 0 0 10 0 10 10 0 8 0
bufpl 272 2290 0 102 146 0 146 146 0 8 0
anonpl 32 5374 0 0 44 0 44 44 0 247 0
amapchunkpl 152 7974 0 7447 26 0 26 26 0 158 3
amappl16 200 1130 0 1113 4 0 4 4 0 8 3
amappl15 192 3 0 3 1 0 1 1 0 8 1
amappl14 184 411 0 409 1 0 1 1 0 8 0
amappl13 176 117 0 106 1 0 1 1 0 8 0
amappl12 168 674 0 639 2 0 2 2 0 8 0
amappl11 160 4 0 4 1 0 1 1 0 8 1
amappl10 152 81 0 71 1 0 1 1 0 8 0
amappl9 144 270 0 270 1 0 1 1 0 8 1
amappl8 136 95 0 94 1 0 1 1 0 8 0
amappl7 128 137 0 125 1 0 1 1 0 8 0
amappl6 120 145 0 143 1 0 1 1 0 8 0
amappl5 112 92 0 85 1 0 1 1 0 8 0
amappl4 104 282 0 267 1 0 1 1 0 8 0
amappl3 96 1445 0 1320 5 1 4 4 0 8 0
amappl2 88 518 0 466 2 0 2 2 0 8 0
amappl1 80 10257 0 9644 14 0 14 14 0 8 0
amappl 88 2241 0 2061 5 0 5 5 0 92 0
uvmvnodes 80 95 0 0 2 0 2 2 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 128 253 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 24 435 0 396 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 435 0 396 1 0 1 1 0 8 0
vmmpekpl 168 5587 0 5556 2 0 2 2 0 8 0
vmmpepl 168 36539 0 34434 93 0 93 93 0 357 0
vmsppl 488 434 0 396 7 1 6 6 0 8 0
rwobjpl 80 13525 0 12547 23 0 23 23 0 8 1
pdppl 4096 877 0 792 113 14 99 99 0 8 14
pvpl 32 11764 0 0 96 0 96 96 0 265 1
pmappl 256 434 0 396 4 1 3 3 0 8 0
extentpl 40 46 0 28 1 0 1 1 0 8 0
phpool 112 424 0 17 12 0 12 12 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x27: addq $0x8,%rsp
x86_ipi_db(ffffffff83925ff0) 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
end of kernel
end trace frame: 0x7c3097164090, count: 12
ddb{0}> trace
x86_ipi_db(ffffffff83925ff0) 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
end of kernel
end trace frame: 0x7c3097164090, count: -3
ddb{0}> machine ddbcpu 1
Stopped at uvm_fault_upper_lookup+0x18b: movq 0(%r14),%rax
uvm_fault_upper_lookup(ffff80003c42bc50,ffff80003c42bc88,ffff80003c42bb50,ffff80003c42bbd0) at uvm_fault_upper_lookup+0x18b sys/uvm/uvm_fault.c:968
uvm_fault(ffffef007efcdba0,d6c44f33000,0,1) at uvm_fault+0x159 sys/uvm/uvm_fault.c:632
upageflttrap(ffff80003c42bdf0,d6c44f33918) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
usertrap(ffff80003c42bdf0) at usertrap+0x430 sys/arch/amd64/amd64/trap.c:640
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7b6a249adee0, count: 10
ddb{1}> trace
uvm_fault_upper_lookup(ffff80003c42bc50,ffff80003c42bc88,ffff80003c42bb50,ffff80003c42bbd0) at uvm_fault_upper_lookup+0x18b sys/uvm/uvm_fault.c:968
uvm_fault(ffffef007efcdba0,d6c44f33000,0,1) at uvm_fault+0x159 sys/uvm/uvm_fault.c:632
upageflttrap(ffff80003c42bdf0,d6c44f33918) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
usertrap(ffff80003c42bdf0) at usertrap+0x430 sys/arch/amd64/amd64/trap.c:640
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7b6a249adee0, count: -5