uvm_fault(0xffffffff82557cf8, 0x7fbfbfffffa8, 0, 2) -> e
kernel: page fault trap, code=0
Stopped at pmap_page_remove+0x33d: xchgq %rax,0(%r12,%rcx,1)
ddb>
ddb> set $lines = 0
ddb> set $maxwidth = 0
ddb> show panic
kernel page fault
uvm_fault(0xffffffff82557cf8, 0x7fbfbfffffa8, 0, 2) -> e
pmap_page_remove(fffffd8003d23a80) at pmap_page_remove+0x33d _atomic_swap_64 machine/atomic.h:117 [inline]
pmap_page_remove(fffffd8003d23a80) at pmap_page_remove+0x33d sys/arch/amd64/amd64/pmap.c:1878
end trace frame: 0xffff800014842b70, count: 0
ddb> trace
pmap_page_remove(fffffd8003d23a80) at pmap_page_remove+0x33d _atomic_swap_64 machine/atomic.h:117 [inline]
pmap_page_remove(fffffd8003d23a80) at pmap_page_remove+0x33d sys/arch/amd64/amd64/pmap.c:1878
uvm_anfree(fffffd802f1f4f40) at uvm_anfree+0x4d sys/uvm/uvm_anon.c:104
amap_wipeout(fffffd803dcd4f18) at amap_wipeout+0x16d sys/uvm/uvm_amap.c:457
uvm_unmap_detach(ffff800014842c40,1) at uvm_unmap_detach+0x163 sys/uvm/uvm_map.c:1570
uvm_map_teardown(fffffd803f013ee0) at uvm_map_teardown+0x22c sys/uvm/uvm_map.c:2735
uvmspace_free(fffffd803f013ee0) at uvmspace_free+0x86 sys/uvm/uvm_map.c:3588
uvm_exit(ffff8000148a3458) at uvm_exit+0x29 sys/uvm/uvm_glue.c:297
reaper(ffff8000fffff8b0) at reaper+0x15c sys/kern/kern_exit.c:442
end trace frame: 0x0, count: -8
ddb> show registers
rdi 0
rsi 0
rbp 0xffff800014842b30
rbx 0
rdx 0xfffffd8003df5280
rcx 0x7f8000000000
rax 0
r8 0x1ac3c206e000
r9 0x7
r10 0x98f35c91d9dad9a9
r11 0x9be75d667aeba57e
r12 0x3fbfffffa8
r13 0xfffffd8038437548
r14 0x800000003f7be000
r15 0xfffffd8003d23c00
rip 0xffffffff810985dd pmap_page_remove+0x33d
cs 0x8
rflags 0x10246 __ALIGN_SIZE+0xf246
rsp 0xffff800014842aa0
ss 0x10
pmap_page_remove+0x33d: xchgq %rax,0(%r12,%rcx,1)
ddb> show proc
PROC (reaper) pid=325059 stat=onproc
flags process=14000<NOZOMBIE,SYSTEM> proc=200<SYSTEM>
pri=86, usrpri=86, nice=20
forw=0xffffffffffffffff, list=0xffff8000ffffe9e0,0xffff8000ffff93d8
process=0xffff8000ffffad88 user=0xffff80001483d000, vmspace=0xffffffff82557cf8
estcpu=36, cpticks=70, pctcpu=19.45
user=0, sys=3, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
14307 450339 81727 0 3 0x10008a pause sh
81727 9936 38382 0 3 0x82 wait syz-executor.0
87953 258145 0 0 3 0x14200 acct acct
98946 467773 0 0 3 0x14200 bored sosplice
38382 139421 98515 0 3 0x82 thrsleep syz-fuzzer
38382 75898 98515 0 2 0x4000482 syz-fuzzer
38382 278843 98515 0 3 0x4000082 thrsleep syz-fuzzer
38382 119819 98515 0 3 0x4000082 thrsleep syz-fuzzer
38382 354330 98515 0 3 0x4000082 wait syz-fuzzer
38382 476714 98515 0 3 0x4000082 thrsleep syz-fuzzer
38382 451037 98515 0 3 0x4000082 thrsleep syz-fuzzer
38382 320907 98515 0 3 0x4000082 thrsleep syz-fuzzer
98515 128992 93046 0 3 0x10008a pause ksh
93046 59002 20105 0 3 0x92 select sshd
80817 114612 1 0 3 0x100083 ttyin getty
20105 326031 1 0 3 0x80 select sshd
56756 6207 79998 73 2 0x100010 syslogd
79998 291483 1 0 3 0x100082 netio syslogd
56911 193150 1 77 3 0x100090 poll dhclient
88684 401863 1 0 3 0x80 poll dhclient
61049 9561 0 0 2 0x14200 zerothread
40208 500909 0 0 3 0x14200 aiodoned aiodoned
44785 4087 0 0 3 0x14200 syncer update
15529 37484 0 0 3 0x14200 cleaner cleaner
*48062 325059 0 0 7 0x14200 reaper
38129 34823 0 0 3 0x14200 pgdaemon pagedaemon
14016 48997 0 0 3 0x14200 bored crynlk
62031 512983 0 0 3 0x14200 bored crypto
34111 194480 0 0 3 0x40014200 acpi0 acpi0
85819 522162 0 0 3 0x14200 bored softnet
88232 191017 0 0 3 0x14200 bored systqmp
15983 215182 0 0 3 0x14200 bored systq
42470 33258 0 0 3 0x40014200 bored softclock
56306 315996 0 0 3 0x40014200 idle0
99794 2461 0 0 3 0x14200 bored smr
1 38425 0 0 3 0x82 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 Kern Lim
devbuf 9525 6357K 6999K 78643K 16546 0 0
pcb 13 10K 12K 78643K 389 0 0
rtable 77 11K 12K 78643K 1005 0 0
ifaddr 53 13K 16K 78643K 338 0 0
counters 19 16K 16K 78643K 19 0 0
ioctlops 0 0K 2K 78643K 142 0 0
iov 0 0K 24K 78643K 275 0 0
mount 1 1K 1K 78643K 1 0 0
vnodes 1211 76K 77K 78643K 3446 0 0
UFS quota 1 32K 32K 78643K 1 0 0
UFS mount 5 36K 36K 78643K 5 0 0
shm 2 1K 5K 78643K 24 0 0
VM map 2 0K 0K 78643K 6 0 0
sem 12 0K 1K 78643K 370 0 0
dirhash 12 2K 2K 78643K 12 0 0
ACPI 1793 195K 288K 78643K 12645 0 0
file desc 4 9K 25K 78643K 2597 0 0
sigio 0 0K 0K 78643K 19 0 0
proc 50 38K 63K 78643K 929 0 0
subproc 17 1K 2K 78643K 191 0 0
NFS srvsock 1 0K 0K 78643K 1 0 0
NFS daemon 1 16K 16K 78643K 1 0 0
ip_moptions 0 0K 0K 78643K 221 0 0
in_multi 12 0K 2K 78643K 180 0 0
ether_multi 1 0K 0K 78643K 13 0 0
mrt 0 0K 0K 78643K 6 0 0
ISOFS mount 1 32K 32K 78643K 1 0 0
MSDOSFS mount 1 16K 16K 78643K 1 0 0
ttys 114 503K 503K 78643K 114 0 0
exec 0 0K 1K 78643K 480 0 0
pagedep 1 8K 8K 78643K 1 0 0
inodedep 1 32K 32K 78643K 1 0 0
newblk 1 0K 0K 78643K 1 0 0
VM swap 7 26K 26K 78643K 7 0 0
UVM amap 106 22K 30K 78643K 8018 0 0
UVM aobj 106 6K 6K 78643K 113 0 0
memdesc 1 4K 4K 78643K 1 0 0
crypto data 1 1K 1K 78643K 1 0 0
ip6_options 0 0K 0K 78643K 364 0 0
NDP 12 0K 0K 78643K 101 0 0
temp 169 3535K 3634K 78643K 62162 0 0
kqueue 0 0K 0K 78643K 45 0 0
SYN cache 2 16K 16K 78643K 2 0 0
ddb> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
arp 64 24 0 21 1 0 1 1 0 8 0
rtpcb 80 167 0 165 1 0 1 1 0 8 0
rtentry 112 136 0 111 2 0 2 2 0 8 0
unpcb 120 1107 0 1098 1 0 1 1 0 8 0
syncache 264 13 0 13 6 6 0 1 0 8 0
tcpqe 32 3969 0 3969 3 3 0 1 0 8 0
tcpcb 544 690 0 686 1 0 1 1 0 8 0
ipq 40 4 0 4 2 2 0 1 0 8 0
ipqe 40 12 0 12 2 2 0 1 0 8 0
inpcb 280 2152 0 2145 22 21 1 13 0 8 0
rttmr 72 1 0 1 1 1 0 1 0 8 0
nd6 48 20 0 20 1 0 1 1 0 8 1
pkpcb 40 18 0 18 6 6 0 1 0 8 0
swfcl 56 2 0 0 1 0 1 1 0 8 0
ppxss 1128 49 0 49 18 18 0 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 590 0 462 14 0 14 14 0 8 3
art_table 32 591 0 462 2 0 2 2 0 8 0
art_node 16 133 0 110 1 0 1 1 0 8 0
sysvmsgpl 40 30 0 25 2 1 1 1 0 8 0
semupl 112 2 0 2 1 1 0 1 0 8 0
semapl 112 366 0 356 1 0 1 1 0 8 0
shmpl 112 111 0 7 3 0 3 3 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino1pl 128 5331 0 3948 46 0 46 46 0 8 0
ffsino 240 5331 0 3948 83 0 83 83 0 8 0
nchpl 144 9914 0 8299 64 3 61 61 0 8 0
uvmvnodes 72 6938 0 0 127 0 127 127 0 8 0
vnodes 208 6938 0 0 366 0 366 366 0 8 0
namei 1024 33882 0 33882 5 5 0 1 0 8 0
vmpool 520 4 0 4 2 2 0 1 0 8 0
scsiplug 64 4 0 4 2 2 0 1 0 8 0
scxspl 192 34690 0 34690 13 12 1 7 0 8 1
plimitpl 152 205 0 197 1 0 1 1 0 8 0
sigapl 432 2741 0 2728 2 0 2 2 0 8 0
futexpl 56 62051 0 62051 4 4 0 1 0 8 0
knotepl 112 3438 0 3419 14 13 1 2 0 8 0
kqueuepl 104 5181 0 5179 1 0 1 1 0 8 0
pipepl 112 1488 0 1473 8 7 1 2 0 8 0
fdescpl 424 2742 0 2729 2 0 2 2 0 8 0
filepl 120 26596 0 26522 30 27 3 11 0 8 0
lockfpl 104 844 0 843 1 0 1 1 0 8 0
lockfspl 48 277 0 276 1 0 1 1 0 8 0
sessionpl 112 26 0 16 1 0 1 1 0 8 0
pgrppl 48 44 0 34 1 0 1 1 0 8 0
ucredpl 96 2929 0 2921 1 0 1 1 0 8 0
zombiepl 144 2729 0 2726 3 2 1 1 0 8 0
processpl 864 2758 0 2726 4 0 4 4 0 8 0
procpl 632 6953 0 6914 11 7 4 5 0 8 0
sosppl 128 60 0 60 12 12 0 1 0 8 0
sockpl 384 3478 0 3460 29 26 3 21 0 8 0
mcl64k 65536 1090 0 1090 138 138 0 33 0 8 0
mcl16k 16384 18 0 18 14 14 0 1 0 8 0
mcl12k 12288 43 0 43 15 15 0 1 0 8 0
mcl9k 9216 26 0 26 13 13 0 1 0 8 0
mcl8k 8192 73 0 73 16 16 0 1 0 8 0
mcl4k 4096 250 0 250 5 5 0 1 0 8 0
mcl2k2 2112 22 0 22 9 9 0 1 0 8 0
mcl2k 2048 61257 0 61211 18 10 8 13 0 8 0
mtagpl 80 112 0 112 2 1 1 1 0 8 1
mbufpl 256 114287 0 114229 75 66 9 25 0 8 1
bufpl 256 17038 0 9688 460 0 460 460 0 8 0
anonpl 16 307397 0 296130 180 100 80 80 0 62 13
amapchunkpl 152 14425 0 14319 54 48 6 16 0 158 0
amappl16 192 15295 0 14449 154 99 55 56 0 8 11
amappl15 184 975 0 973 2 1 1 1 0 8 0
amappl14 176 594 0 592 2 1 1 1 0 8 0
amappl13 168 790 0 790 3 3 0 1 0 8 0
amappl12 160 297 0 295 1 0 1 1 0 8 0
amappl11 152 70 0 59 1 0 1 1 0 8 0
amappl10 144 12 0 9 1 0 1 1 0 8 0
amappl9 136 881 0 874 1 0 1 1 0 8 0
amappl8 128 467 0 437 2 0 2 2 0 8 0
amappl7 120 78 0 71 1 0 1 1 0 8 0
amappl6 112 82 0 68 1 0 1 1 0 8 0
amappl5 104 521 0 510 1 0 1 1 0 8 0
amappl4 96 2686 0 2659 1 0 1 1 0 8 0
amappl3 88 694 0 689 1 0 1 1 0 8 0
amappl2 80 22015 0 21956 4 2 2 3 0 8 0
amappl1 72 61127 0 60700 27 18 9 20 0 8 0
amappl 80 7280 0 7244 4 2 2 2 0 84 0
dma4096 4096 1 0 1 1 1 0 1 0 8 0
dma256 256 6 0 6 1 1 0 1 0 8 0
dma64 64 259 0 259 1 1 0 1 0 8 0
dma32 32 7 0 7 1 1 0 1 0 8 0
dma16 16 17 0 17 1 1 0 1 0 8 0
aobjpl 64 112 0 7 2 0 2 2 0 8 0
uaddrrnd 24 2746 0 2728 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 2746 0 2728 1 0 1 1 0 8 0
vmmpekpl 168 21859 0 21831 2 0 2 2 0 8 0
vmmpepl 168 334834 0 332998 346 225 121 131 0 357 30
vmsppl 272 2741 0 2727 4 3 1 2 0 8 0
pdppl 4096 5498 0 5462 6 1 5 6 0 8 0
pvpl 32 991036 0 976676 589 309 280 295 0 265 115
pmappl 200 2745 0 2731 1 0 1 1 0 8 0
extentpl 40 41 0 26 1 0 1 1 0 8 0
phpool 112 845 0 260 20 2 18 19 0 8 0