uvm_fault(0xffffffff82874878, 0xfffffd0000000008, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at ml_purge+0x38: movq 0x8(%r12),%r12
ddb{0}>
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
kernel page fault
uvm_fault(0xffffffff82874878, 0xfffffd0000000008, 0, 1) -> e
ml_purge(ffff800020ee1628) at ml_purge+0x38 sys/kern/uipc_mbuf.c:1627
end trace frame: 0xffff800020ee1670, count: 0
ddb{0}> trace
ml_purge(ffff800020ee1628) at ml_purge+0x38 sys/kern/uipc_mbuf.c:1627
ifq_purge(ffff800000ac5278) at ifq_purge+0x9a sys/net/ifq.c:462
tun_dev_close(5d00,7) at tun_dev_close+0xc8 sys/net/if_tun.c:460
spec_close(ffff800020ee1750) at spec_close+0x311 sys/kern/spec_vnops.c:560
VOP_CLOSE(fffffd80763430d8,7,fffffd807f7bf720,ffff800020ddc758) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174
vn_closefile(fffffd80681f2d28,ffff800020ddc758) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline]
vn_closefile(fffffd80681f2d28,ffff800020ddc758) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614
fdrop(fffffd80681f2d28,ffff800020ddc758) at fdrop+0xc2 sys/kern/kern_descrip.c:1279
closef(fffffd80681f2d28,ffff800020ddc758) at closef+0x11c sys/kern/kern_descrip.c:1263
fdfree(ffff800020ddc758) at fdfree+0x101 sys/kern/kern_descrip.c:1195
exit1(ffff800020ddc758,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197
postsig(ffff800020ddc758,19) at postsig+0x4ed sigexit sys/kern/kern_sig.c:1483 [inline]
postsig(ffff800020ddc758,19) at postsig+0x4ed sys/kern/kern_sig.c:1415
userret(ffff800020ddc758) at userret+0x199 sys/kern/kern_sig.c:1872
syscall(ffff800020ee1bd0) at syscall+0x55f mi_syscall_return sys/sys/syscall_mi.h:129 [inline]
syscall(ffff800020ee1bd0) at syscall+0x55f sys/arch/amd64/amd64/trap.c:592
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffd21c0, count: -14
ddb{0}> show registers
rdi 0
rsi 0
rbp 0xffff800020ee1610
rbx 0
rdx 0x6249e acpi_pdirpa+0x4e306
rcx 0
rax 0
r8 0xffffffff81826317 witness_assert+0x207
r9 0x5
r10 0x499f3a51900cb230
r11 0xf69a476f74728bba
r12 0xfffffd0000000000
r13 0x2000 __ALIGN_SIZE+0x1000
r14 0xffff800020ee1628
r15 0xfffffd0000000000
rip 0xffffffff821523f8 ml_purge+0x38
cs 0x8
rflags 0x10246 __ALIGN_SIZE+0xf246
rsp 0xffff800020ee15e0
ss 0x10
ml_purge+0x38: movq 0x8(%r12),%r12
ddb{0}> show proc
PROC (syz-executor.0) pid=409496 stat=onproc
flags process=a<EXEC,EXITING,8ORPHAN> proc=2000<WEXIT>
pri=17, usrpri=75, nice=20
forw=0xffffffffffffffff, list=0xffff800020dddad8,0xffff800020dddd58
process=0xffff800020df03e8 user=0xffff800020edc000, vmspace=0xfffffd807f000b80
estcpu=36, cpticks=1, pctcpu=0.24
user=0, sys=1, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
87750 392566 0 0 3 0x14280 nfsidl nfsio
47046 340093 0 0 3 0x14280 nfsidl nfsio
76312 231321 0 0 3 0x14280 nfsidl nfsio
17343 49269 0 0 3 0x14280 nfsidl nfsio
75476 260467 0 0 3 0x14280 nfsidl nfsio
42584 232668 0 0 3 0x14280 nfsidl nfsio
14886 492251 0 0 3 0x14280 nfsidl nfsio
83934 83753 0 0 3 0x14280 nfsidl nfsio
21963 15303 0 0 3 0x14280 nfsidl nfsio
39766 40123 0 0 3 0x14280 nfsidl nfsio
84147 4770 0 0 3 0x14280 nfsidl nfsio
12477 317416 0 0 3 0x14280 nfsidl nfsio
36709 77707 0 0 3 0x14280 nfsidl nfsio
31789 162519 0 0 3 0x14280 nfsidl nfsio
37080 2309 0 0 3 0x14280 nfsidl nfsio
83362 300434 0 0 3 0x14280 nfsidl nfsio
11527 506346 0 0 3 0x14280 nfsidl nfsio
80261 346501 0 0 3 0x14280 nfsidl nfsio
81656 13744 0 0 3 0x14280 nfsidl nfsio
67097 190320 0 0 3 0x14280 nfsidl nfsio
78700 133110 0 0 3 0x14200 acct acct
66256 299809 0 0 3 0x14200 bored sosplice
9185 331228 49160 0 2 0x482 syz-executor.1
49160 180011 81312 0 3 0x82 thrsleep syz-fuzzer
49160 483947 81312 0 2 0x4000482 syz-fuzzer
49160 229765 81312 0 3 0x4000082 thrsleep syz-fuzzer
49160 115524 81312 0 3 0x4000082 thrsleep syz-fuzzer
49160 264508 81312 0 3 0x4000082 thrsleep syz-fuzzer
49160 391502 81312 0 3 0x4000082 thrsleep syz-fuzzer
49160 157347 81312 0 3 0x4000082 thrsleep syz-fuzzer
49160 105161 81312 0 3 0x4000082 thrsleep syz-fuzzer
49160 448919 81312 0 3 0x4000082 thrsleep syz-fuzzer
49160 130005 81312 0 7 0x4000082 syz-fuzzer
81312 96660 39698 0 3 0x10008a pause ksh
39698 366560 93803 0 3 0x92 select sshd
69364 104190 1 0 3 0x100083 ttyopn getty
93803 218483 1 0 3 0x80 select sshd
94765 469875 11881 74 3 0x100092 bpf pflogd
11881 29003 1 0 3 0x80 netio pflogd
91761 20722 81316 73 3 0x100090 kqread syslogd
81316 72286 1 0 3 0x100082 netio syslogd
89137 120919 1 77 3 0x100090 poll dhclient
44760 267187 1 0 3 0x80 poll dhclient
93588 392394 0 0 3 0x14200 bored smr
72133 308196 0 0 2 0x14200 zerothread
614 23479 0 0 3 0x14200 aiodoned aiodoned
65528 363265 0 0 3 0x14200 syncer update
4549 513843 0 0 3 0x14200 cleaner cleaner
17086 209769 0 0 3 0x14200 reaper reaper
10356 169809 0 0 3 0x14200 pgdaemon pagedaemon
16917 464948 0 0 3 0x14200 bored crynlk
62918 224847 0 0 3 0x14200 bored crypto
4353 488953 0 0 3 0x40014200 acpi0 acpi0
65413 475876 0 0 3 0x40014200 idle1
60146 187007 0 0 3 0x14200 bored softnet
51949 127360 0 0 3 0x14200 bored systqmp
15193 282005 0 0 3 0x14200 bored systq
74950 428510 0 0 2 0x40014200 softclock
29433 196402 0 0 3 0x40014200 idle0
1 43817 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 9528 6427K 7186K 78643K 12254 0
pcb 13 8K 8K 78643K 66 0
rtable 125 16K 19K 78643K 411 0
ifaddr 90 18K 18K 78643K 169 0
sysctl 2 0K 0K 78643K 2 0
counters 43 33K 34K 78643K 59 0
ioctlops 0 0K 4K 78643K 1558 0
iov 0 0K 16K 78643K 162 0
mount 1 1K 1K 78643K 1 0
vnodes 1231 77K 78K 78643K 1665 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 5K 78643K 12 0
VM map 2 1K 1K 78643K 2 0
sem 12 0K 0K 78643K 212 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1824 197K 290K 78643K 13058 0
file desc 4 9K 25K 78643K 477 0
sigio 0 0K 0K 78643K 4 0
proc 61 63K 83K 78643K 487 0
subproc 23 1K 2K 78643K 34 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 57 0
in_multi 61 3K 3K 78643K 137 0
ether_multi 1 0K 0K 78643K 9 0
mrt 0 0K 0K 78643K 10 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 49 228K 228K 78643K 49 0
exec 0 0K 1K 78643K 261 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 145 72K 77K 78643K 2563 0
UVM aobj 29 2K 2K 78643K 30 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 44 0
NDP 13 0K 0K 78643K 32 0
temp 114 3869K 3934K 78643K 9572 0
kqueue 3 4K 9K 78643K 33 0
SYN cache 2 16K 16K 78643K 2 0
ddb{0}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
arp 64 7 0 1 1 0 1 1 0 8 0
plcache 128 20 0 0 1 0 1 1 0 8 0
rtpcb 80 33 0 31 1 0 1 1 0 8 0
rtentry 112 76 0 35 2 0 2 2 0 8 0
unpcb 120 283 0 273 1 0 1 1 0 8 0
syncache 264 12 0 12 4 3 1 1 0 8 1
tcpqe 32 859 0 859 2 2 0 1 0 8 0
tcpcb 544 183 0 172 2 1 1 2 0 8 0
inpcb 296 640 0 631 2 0 2 2 0 8 1
rttmr 72 4 0 4 1 1 0 1 0 8 0
nd6 48 18 0 14 1 0 1 1 0 8 0
pkpcb 40 2 0 2 1 1 0 1 0 8 0
pfstscr 40 1 0 0 1 0 1 1 0 8 0
pffrag 232 3 0 3 2 1 1 1 0 482 1
pffrnode 88 3 0 3 2 1 1 1 0 8 1
pffrent 40 12 0 12 2 1 1 1 0 8 1
pfosfp 40 846 0 423 5 0 5 5 0 8 0
pfosfpen 112 1428 0 714 21 0 21 21 0 8 0
pfrktable 1344 27 0 18 2 1 1 2 0 8 0
pftag 88 1 0 0 1 0 1 1 0 8 0
pfstitem 24 17 0 5 1 0 1 1 0 8 0
pfstkey 112 17 0 5 1 0 1 1 0 8 0
pfstate 328 15 0 5 2 0 2 2 0 8 0
pfsrctr 152 3 0 3 1 1 0 1 0 8 0
pfrule 1360 41 0 22 3 1 2 2 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 273 0 96 13 0 13 13 0 8 0
art_table 32 274 0 96 2 0 2 2 0 8 0
art_node 16 75 0 37 1 0 1 1 0 8 0
sysvmsgpl 40 20 0 15 1 0 1 1 0 8 0
semupl 112 4 0 4 1 1 0 1 0 8 0
semapl 112 210 0 200 1 0 1 1 0 8 0
shmpl 112 28 0 2 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 2054 0 650 89 0 89 89 0 8 0
ffsino 272 2054 0 650 95 0 95 95 0 8 0
nchpl 144 2929 0 1320 60 0 60 60 0 8 0
uvmvnodes 72 2478 0 0 46 0 46 46 0 8 0
vnodes 208 2478 0 0 131 0 131 131 0 8 0
namei 1024 8325 0 8325 1 0 1 1 0 8 1
percpumem 16 40 0 8 1 0 1 1 0 8 0
vcpupl 1984 6 0 0 1 0 1 1 0 8 0
vmpool 560 8 0 2 1 0 1 1 0 8 0
pfiaddrpl 120 11 0 3 1 0 1 1 0 8 0
scxspl 192 8944 0 8944 8 7 1 7 0 8 1
plimitpl 152 48 0 40 1 0 1 1 0 8 0
sigapl 424 714 0 662 7 0 7 7 0 8 1
futexpl 56 8375 0 8375 1 0 1 1 0 8 1
knotepl 112 93 0 74 1 0 1 1 0 8 0
kqueuepl 144 112 0 109 1 0 1 1 0 8 0
pipelkpl 48 148 0 138 1 0 1 1 0 8 0
pipepl 120 296 0 278 1 0 1 1 0 8 0
fdescpl 496 677 0 662 3 0 3 3 0 8 0
filepl 152 4176 0 4086 5 0 5 5 0 8 1
lockfpl 104 98 0 97 1 0 1 1 0 8 0
lockfspl 48 38 0 37 1 0 1 1 0 8 0
sessionpl 112 18 0 7 1 0 1 1 0 8 0
pgrppl 48 20 0 9 1 0 1 1 0 8 0
ucredpl 96 382 0 373 1 0 1 1 0 8 0
zombiepl 144 663 0 661 1 0 1 1 0 8 0
processpl 984 714 0 661 7 0 7 7 0 8 0
procpl 624 1765 0 1703 6 0 6 6 0 8 0
sosppl 128 8 0 8 2 1 1 1 0 8 1
sockpl 400 963 0 943 5 1 4 4 0 8 1
mcl64k 65536 6 0 0 1 0 1 1 0 8 0
mcl16k 16384 2 0 0 1 0 1 1 0 8 0
mcl12k 12288 6 0 0 1 0 1 1 0 8 0
mcl9k 9216 3 0 0 1 0 1 1 0 8 0
mcl8k 8192 9 0 0 2 0 2 2 0 8 0
mcl4k 4096 13 0 0 2 0 2 2 0 8 0
mcl2k2 2112 1 0 0 1 0 1 1 0 8 0
mcl2k 2048 185 0 0 23 0 23 23 0 8 0
mtagpl 96 40 0 0 1 0 1 1 0 8 0
mbufpl 256 333 0 0 20 0 20 20 0 8 0
bufpl 280 4419 0 132 307 0 307 307 0 8 0
anonpl 16 74747 0 57795 84 13 71 83 0 124 1
amapchunkpl 152 4799 0 4636 34 13 21 21 0 158 14
amappl16 192 3423 0 2517 58 11 47 57 0 8 1
amappl15 184 2 0 0 1 0 1 1 0 8 0
amappl14 176 28 0 21 1 0 1 1 0 8 0
amappl13 168 28 0 25 1 0 1 1 0 8 0
amappl12 160 14 0 11 1 0 1 1 0 8 0
amappl11 152 57 0 42 1 0 1 1 0 8 0
amappl10 144 236 0 230 1 0 1 1 0 8 0
amappl9 136 386 0 385 1 0 1 1 0 8 0
amappl8 128 366 0 321 2 0 2 2 0 8 0
amappl7 120 126 0 114 1 0 1 1 0 8 0
amappl6 112 32 0 24 1 0 1 1 0 8 0
amappl5 104 579 0 565 1 0 1 1 0 8 0
amappl4 96 491 0 460 1 0 1 1 0 8 0
amappl3 88 128 0 123 1 0 1 1 0 8 0
amappl2 80 4539 0 4477 2 0 2 2 0 8 0
amappl1 72 24837 0 24407 23 13 10 18 0 8 0
amappl 80 2000 0 1954 2 0 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
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 64 29 0 1 1 0 1 1 0 8 0
uaddrrnd 24 685 0 664 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 685 0 664 1 0 1 1 0 8 0
vmmpekpl 168 8933 0 8890 3 0 3 3 0 8 0
vmmpepl 168 88733 0 86731 117 18 99 110 0 357 2
vmsppl 368 684 0 664 3 0 3 3 0 8 1
pdppl 4096 1377 0 1334 7 1 6 7 0 8 0
pvpl 32 238258 0 218647 197 13 184 197 0 265 22
pmappl 232 684 0 664 2 0 2 2 0 8 0
extentpl 40 53 0 36 1 0 1 1 0 8 0
phpool 112 279 0 6 8 0 8 8 0 8 0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
ml_purge(ffff800020ee1628) at ml_purge+0x38 sys/kern/uipc_mbuf.c:1627
ifq_purge(ffff800000ac5278) at ifq_purge+0x9a sys/net/ifq.c:462
tun_dev_close(5d00,7) at tun_dev_close+0xc8 sys/net/if_tun.c:460
spec_close(ffff800020ee1750) at spec_close+0x311 sys/kern/spec_vnops.c:560
VOP_CLOSE(fffffd80763430d8,7,fffffd807f7bf720,ffff800020ddc758) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174
vn_closefile(fffffd80681f2d28,ffff800020ddc758) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline]
vn_closefile(fffffd80681f2d28,ffff800020ddc758) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614
fdrop(fffffd80681f2d28,ffff800020ddc758) at fdrop+0xc2 sys/kern/kern_descrip.c:1279
closef(fffffd80681f2d28,ffff800020ddc758) at closef+0x11c sys/kern/kern_descrip.c:1263
fdfree(ffff800020ddc758) at fdfree+0x101 sys/kern/kern_descrip.c:1195
exit1(ffff800020ddc758,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197
postsig(ffff800020ddc758,19) at postsig+0x4ed sigexit sys/kern/kern_sig.c:1483 [inline]
postsig(ffff800020ddc758,19) at postsig+0x4ed sys/kern/kern_sig.c:1415
userret(ffff800020ddc758) at userret+0x199 sys/kern/kern_sig.c:1872
syscall(ffff800020ee1bd0) at syscall+0x55f mi_syscall_return sys/sys/syscall_mi.h:129 [inline]
syscall(ffff800020ee1bd0) at syscall+0x55f sys/arch/amd64/amd64/trap.c:592
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffd21c0, count: -14
ddb{0}> machine ddbcpu 1
Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp
ddb{1}> trace
x86_ipi_db(ffff800020d70ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352
x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
__mp_lock(ffffffff828cb728) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff828cb728) at __mp_lock+0x127 sys/kern/kern_lock.c:147
__mp_acquire_count(ffffffff828cb728,2) at __mp_acquire_count+0x51 sys/kern/kern_lock.c:227
mi_switch() at mi_switch+0x392 sys/kern/sched_bsd.c:435
sleep_finish(ffff800020ebf2d0,1) at sleep_finish+0x113 sys/kern/kern_synch.c:418
sleep_finish_all(ffff800020ebf2d0,1) at sleep_finish_all+0x32 sleep_finish_timeout sys/kern/kern_synch.c:447 [inline]
sleep_finish_all(ffff800020ebf2d0,1) at sleep_finish_all+0x32 sys/kern/kern_synch.c:393
tsleep(fffffd806e90fd80,118,ffffffff8245f2b4,0) at tsleep+0x1cc sys/kern/kern_synch.c:155
kqueue_sleep(fffffd806e90fd80,0) at kqueue_sleep+0x1a0 sys/kern/kern_event.c:885
kqueue_scan(fffffd806e90fd80,40,c0000c7698,0,ffff800020dddad8,ffff800020ebf7ac) at kqueue_scan+0x2b6 sys/kern/kern_event.c:928
sys_kevent(ffff800020dddad8,ffff800020ebf820,ffff800020ebf870) at sys_kevent+0x464 sys/kern/kern_event.c:640
syscall(ffff800020ebf8f0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff800020ebf8f0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xc0000c7e98, count: -14