uvm_fault(0xffffffff82875c78, 0xfffffd0000000018, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at tun_dev_read+0x138: movl 0x18(%rbx),%r12d
ddb{1}>
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
kernel page fault
uvm_fault(0xffffffff82875c78, 0xfffffd0000000018, 0, 1) -> e
tun_dev_read(5d01,ffff800022513088,10) at tun_dev_read+0x138 sys/net/if_tun.c:790
end trace frame: 0xffff800022512ec0, count: 0
ddb{1}> trace
tun_dev_read(5d01,ffff800022513088,10) at tun_dev_read+0x138 sys/net/if_tun.c:790
spec_read(ffff800022512ed0) at spec_read+0xf1 sys/kern/spec_vnops.c:222
VOP_READ(fffffd806edbb008,ffff800022513088,10,fffffd807f7bf780) at VOP_READ+0xbf sys/kern/vfs_vops.c:247
vn_read(fffffd80681f54e0,ffff800022513088,0) at vn_read+0x124 sys/kern/vfs_vnops.c:375
dofilereadv(ffff800020e0d878,f0,ffff800022513088,0,ffff800022513170) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237
sys_read(ffff800020e0d878,ffff800022513120,ffff800022513170) at sys_read+0x83 sys/kern/sys_generic.c:157
syscall(ffff8000225131f0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000225131f0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x576c314b1a0, count: -8
ddb{1}> show registers
rdi 0
rsi 0x3da
rbp 0xffff800022512e10
rbx 0xfffffd0000000000
rdx 0x153
rcx 0xffff800000ae8140
rax 0xffffffff81f143b3 tun_dev_read+0x133
r8 0x7f7fffffc000
r9 0x5
r10 0xe405418b809efff
r11 0xeabc9aaca795e855
r12 0
r13 0x3da
r14 0xffff800000af3660
r15 0xffff800022513088
rip 0xffffffff81f143b8 tun_dev_read+0x138
cs 0x8
rflags 0x10202 __ALIGN_SIZE+0xf202
rsp 0xffff800022512db0
ss 0x10
tun_dev_read+0x138: movl 0x18(%rbx),%r12d
ddb{1}> show proc
PROC (syz-executor.1) pid=460633 stat=onproc
flags process=0 proc=4000000<THREAD>
pri=73, usrpri=73, nice=20
forw=0xffffffffffffffff, list=0xffff800020e0c018,0xffffffff828ad340
process=0xffff800020e57738 user=0xffff80002250e000, vmspace=0xfffffd807efff730
estcpu=36, cpticks=1, pctcpu=0.0
user=0, sys=1, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
22125 397357 826 0 2 0 syz-executor.1
*22125 460633 826 0 7 0x4000000 syz-executor.1
65558 143641 13031 0 7 0 syz-executor.0
65558 1068 13031 0 3 0x4000000 biowait syz-executor.0
13031 270638 81793 0 3 0x82 nanosleep syz-executor.0
31061 386286 0 0 3 0x14200 bored sosplice
826 359535 81793 0 3 0x82 nanosleep syz-executor.1
81793 343810 66241 0 3 0x82 thrsleep syz-fuzzer
81793 182255 66241 0 3 0x4000082 nanosleep syz-fuzzer
81793 43437 66241 0 3 0x4000082 thrsleep syz-fuzzer
81793 420731 66241 0 3 0x4000082 thrsleep syz-fuzzer
81793 175015 66241 0 3 0x4000082 kqread syz-fuzzer
81793 465163 66241 0 3 0x4000082 thrsleep syz-fuzzer
81793 2408 66241 0 3 0x4000082 thrsleep syz-fuzzer
81793 520155 66241 0 3 0x4000082 thrsleep syz-fuzzer
81793 98854 66241 0 3 0x4000082 thrsleep syz-fuzzer
81793 164456 66241 0 3 0x4000082 thrsleep syz-fuzzer
66241 85561 23810 0 3 0x10008a pause ksh
23810 32670 25417 0 3 0x92 select sshd
5165 308427 1 0 3 0x100083 ttyin getty
25417 386885 1 0 3 0x80 select sshd
73597 294241 4392 74 3 0x100092 bpf pflogd
4392 84676 1 0 3 0x80 netio pflogd
76504 513627 37238 73 3 0x100090 kqread syslogd
37238 208039 1 0 3 0x100082 netio syslogd
4375 394019 1 77 3 0x100090 poll dhclient
64255 484630 1 0 3 0x80 poll dhclient
17294 124866 0 0 3 0x14200 bored smr
70012 198022 0 0 2 0x14200 zerothread
16738 463680 0 0 3 0x14200 aiodoned aiodoned
64004 425682 0 0 3 0x14200 syncer update
15305 362914 0 0 3 0x14200 cleaner cleaner
57745 464419 0 0 3 0x14200 reaper reaper
88872 422088 0 0 3 0x14200 pgdaemon pagedaemon
31853 400275 0 0 3 0x14200 bored crynlk
83676 17862 0 0 3 0x14200 bored crypto
65828 375123 0 0 3 0x40014200 acpi0 acpi0
20449 226970 0 0 3 0x40014200 idle1
27680 53937 0 0 3 0x14200 bored softnet
68762 214924 0 0 3 0x14200 bored systqmp
70370 493431 0 0 3 0x14200 bored systq
10658 251840 0 0 3 0x40014200 bored softclock
4882 426188 0 0 3 0x40014200 idle0
1 324273 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
Process 22125 (syz-executor.1) thread 0xffff800020e0d878 (460633)
exclusive kernel_lock &kernel_lock r = 1 (0xffffffff82899198)
#0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1 vn_read+0x45 sys/kern/vfs_vnops.c:357
#2 dofilereadv+0x1a1 sys/kern/sys_generic.c:237
#3 sys_read+0x83 sys/kern/sys_generic.c:157
#4 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#4 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
#5 Xsyscall+0x128
Process 65558 (syz-executor.0) thread 0xffff800020e0c018 (1068)
exclusive rrwlock inode r = 0 (0xfffffd806edb85e8)
#0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1 rw_enter+0x453 sys/kern/kern_rwlock.c:311
#2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462
#3 ufs_ihashins+0x45 sys/ufs/ufs/ufs_ihash.c:140
#4 ffs_vget+0x13e sys/ufs/ffs/ffs_vfsops.c:1358
#5 ffs_inode_alloc+0x1e2 sys/ufs/ffs/ffs_alloc.c:394
#6 ufs_makeinode+0xaa sys/ufs/ufs/ufs_vnops.c:1830
#7 ufs_create+0x41 sys/ufs/ufs/ufs_vnops.c:152
#8 VOP_CREATE+0xc0 sys/kern/vfs_vops.c:112
#9 vn_open+0x2a4 sys/kern/vfs_vnops.c:122
#10 doopenat+0x28b sys/kern/vfs_syscalls.c:1141
#11 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#11 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
#12 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd806edb86f8)
#0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1 rw_enter+0x453 sys/kern/kern_rwlock.c:311
#2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462
#3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:603
#4 vn_lock+0x81 sys/kern/vfs_vnops.c:575
#5 vfs_lookup+0xe6 sys/kern/vfs_lookup.c:419
#6 namei+0x63c sys/kern/vfs_lookup.c:249
#7 vn_open+0x1a6 sys/kern/vfs_vnops.c:113
#8 doopenat+0x28b sys/kern/vfs_syscalls.c:1141
#9 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#9 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
#10 Xsyscall+0x128
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 9515 6414K 6672K 78643K 10871 0
pcb 13 8K 8K 78643K 56 0
rtable 114 5K 6K 78643K 353 0
ifaddr 67 13K 14K 78643K 128 0
counters 43 33K 34K 78643K 53 0
ioctlops 0 0K 4K 78643K 1505 0
iov 0 0K 48K 78643K 124 0
mount 1 1K 1K 78643K 1 0
vnodes 1221 77K 77K 78643K 1351 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 5K 78643K 5 0
VM map 2 1K 1K 78643K 2 0
sem 12 0K 0K 78643K 49 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1824 197K 290K 78643K 13058 0
file desc 6 17K 25K 78643K 294 0
proc 60 63K 83K 78643K 504 0
subproc 32 2K 2K 78643K 52 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 12 0
in_multi 49 3K 3K 78643K 64 0
ether_multi 1 0K 0K 78643K 5 0
mrt 0 0K 0K 78643K 3 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 61 281K 281K 78643K 61 0
exec 0 0K 1K 78643K 247 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 125 39K 48K 78643K 1975 0
UVM aobj 5 2K 2K 78643K 6 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 35 0
NDP 11 0K 0K 78643K 22 0
temp 97 3852K 3916K 78643K 5264 0
kqueue 3 4K 8K 78643K 11 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
arp 64 10 0 3 1 0 1 1 0 8 0
plcache 128 20 0 0 1 0 1 1 0 8 0
rtpcb 80 31 0 29 1 0 1 1 0 8 0
rtentry 112 59 0 14 2 0 2 2 0 8 0
unpcb 120 145 0 135 1 0 1 1 0 8 0
syncache 264 4 0 4 1 1 0 1 0 8 0
sackhl 24 1 0 1 1 1 0 1 0 8 0
tcpqe 32 342 0 342 1 1 0 1 0 8 0
tcpcb 544 92 0 88 1 0 1 1 0 8 0
inpcb 280 305 0 298 3 1 2 2 0 8 1
nd6 48 9 0 3 1 0 1 1 0 8 0
pkpcb 40 1 0 1 1 0 1 1 0 8 1
ppxss 1128 1 0 1 1 1 0 1 0 8 0
pffrag 232 1 0 0 1 0 1 1 0 482 0
pffrnode 88 1 0 0 1 0 1 1 0 8 0
pffrent 40 1 0 0 1 0 1 1 0 8 0
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 25 2 1 1 1 0 8 0
pftag 88 4 0 4 1 1 0 1 0 8 0
pfstitem 24 26 0 5 1 0 1 1 0 8 0
pfstkey 112 26 0 5 1 0 1 1 0 8 0
pfstate 328 26 0 5 2 0 2 2 0 8 0
pfrule 1360 26 0 20 2 1 1 2 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 239 0 45 13 0 13 13 0 8 0
art_table 32 240 0 45 2 0 2 2 0 8 0
art_node 16 58 0 17 1 0 1 1 0 8 0
sysvmsgpl 40 4 0 2 2 1 1 1 0 8 0
semapl 112 46 0 36 1 0 1 1 0 8 0
shmpl 112 4 0 1 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 1775 0 370 89 0 89 89 0 8 0
ffsino 272 1775 0 370 95 1 94 94 0 8 0
nchpl 144 2360 0 764 60 0 60 60 0 8 0
uvmvnodes 72 1897 0 0 35 0 35 35 0 8 0
vnodes 208 1897 0 0 100 0 100 100 0 8 0
namei 1024 6920 0 6919 2 1 1 1 0 8 0
percpumem 16 37 0 5 1 0 1 1 0 8 0
vcpupl 1984 2 0 0 1 0 1 1 0 8 0
vmpool 560 2 0 0 1 0 1 1 0 8 0
pfiaddrpl 120 9 0 8 2 1 1 1 0 8 0
scxspl 192 6979 0 6978 9 7 2 7 0 8 1
plimitpl 152 35 0 27 1 0 1 1 0 8 0
sigapl 424 507 0 474 4 0 4 4 0 8 0
futexpl 56 4039 0 4039 1 0 1 1 0 8 1
knotepl 112 83 0 64 1 0 1 1 0 8 0
kqueuepl 144 321 0 319 1 0 1 1 0 8 0
pipelkpl 48 123 0 113 1 0 1 1 0 8 0
pipepl 120 246 0 227 2 0 2 2 0 8 1
fdescpl 496 491 0 474 3 0 3 3 0 8 0
filepl 152 3140 0 3039 6 1 5 5 0 8 1
lockfpl 104 72 0 71 1 0 1 1 0 8 0
lockfspl 48 27 0 26 1 0 1 1 0 8 0
sessionpl 112 19 0 8 1 0 1 1 0 8 0
pgrppl 48 23 0 12 1 0 1 1 0 8 0
ucredpl 96 534 0 525 1 0 1 1 0 8 0
zombiepl 144 474 0 474 2 1 1 1 0 8 1
processpl 984 507 0 474 6 1 5 5 0 8 0
procpl 624 1080 0 1036 4 0 4 4 0 8 0
sosppl 128 8 0 8 2 2 0 1 0 8 0
sockpl 400 488 0 469 5 2 3 3 0 8 1
mcl64k 65536 4 0 0 1 0 1 1 0 8 0
mcl12k 12288 3 0 0 1 0 1 1 0 8 0
mcl9k 9216 3 0 0 1 0 1 1 0 8 0
mcl8k 8192 2 0 0 1 0 1 1 0 8 0
mcl4k 4096 4 0 0 1 0 1 1 0 8 0
mcl2k 2048 164 0 0 20 0 20 20 0 8 0
mtagpl 80 15 0 0 1 0 1 1 0 8 0
mbufpl 256 187 0 0 12 0 12 12 0 8 0
bufpl 280 3961 0 134 274 0 274 274 0 8 0
anonpl 16 68801 0 52429 82 10 72 81 0 124 6
amapchunkpl 152 3086 0 2917 16 5 11 12 0 158 4
amappl16 192 2377 0 1512 57 12 45 55 0 8 1
amappl15 184 1 0 1 1 1 0 1 0 8 0
amappl14 176 23 0 19 1 0 1 1 0 8 0
amappl13 168 160 0 155 1 0 1 1 0 8 0
amappl12 160 18 0 15 2 1 1 1 0 8 0
amappl11 152 113 0 96 1 0 1 1 0 8 0
amappl10 144 30 0 22 1 0 1 1 0 8 0
amappl9 136 380 0 379 1 0 1 1 0 8 0
amappl8 128 363 0 335 1 0 1 1 0 8 0
amappl7 120 132 0 120 1 0 1 1 0 8 0
amappl6 112 76 0 72 1 0 1 1 0 8 0
amappl5 104 390 0 372 1 0 1 1 0 8 0
amappl4 96 627 0 595 1 0 1 1 0 8 0
amappl3 88 111 0 105 1 0 1 1 0 8 0
amappl2 80 2861 0 2784 2 0 2 2 0 8 0
amappl1 72 21117 0 20662 23 13 10 18 0 8 0
amappl 80 1363 0 1313 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 5 0 1 1 0 1 1 0 8 0
uaddrrnd 24 493 0 474 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 493 0 474 1 0 1 1 0 8 0
vmmpekpl 168 7674 0 7639 3 0 3 3 0 8 0
vmmpepl 168 67664 0 65547 139 19 120 120 0 357 27
vmsppl 368 492 0 474 2 0 2 2 0 8 0
pdppl 4096 993 0 950 7 1 6 6 0 8 0
pvpl 32 206138 0 186649 191 15 176 191 0 265 18
pmappl 232 492 0 474 2 0 2 2 0 8 0
extentpl 40 53 0 36 1 0 1 1 0 8 0
phpool 112 261 0 8 8 0 8 8 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp
ddb{0}> trace
x86_ipi_db(ffffffff82711ff0) 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(ffffffff82898f90) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82898f90) at __mp_lock+0x127 sys/kern/kern_lock.c:147
intr_handler(ffff800020f00ff0,ffff80000004a400) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532
Xintr_ioapic_edge17_untramp() at Xintr_ioapic_edge17_untramp+0x19f
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x4f kd_curproc sys/dev/kcov.c:416 [inline]
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x4f sys/dev/kcov.c:79
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7fffff88f0, count: -8
ddb{0}> machine ddbcpu 1
Stopped at tun_dev_read+0x138: movl 0x18(%rbx),%r12d
ddb{1}> trace
tun_dev_read(5d01,ffff800022513088,10) at tun_dev_read+0x138 sys/net/if_tun.c:790
spec_read(ffff800022512ed0) at spec_read+0xf1 sys/kern/spec_vnops.c:222
VOP_READ(fffffd806edbb008,ffff800022513088,10,fffffd807f7bf780) at VOP_READ+0xbf sys/kern/vfs_vops.c:247
vn_read(fffffd80681f54e0,ffff800022513088,0) at vn_read+0x124 sys/kern/vfs_vnops.c:375
dofilereadv(ffff800020e0d878,f0,ffff800022513088,0,ffff800022513170) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237
sys_read(ffff800020e0d878,ffff800022513120,ffff800022513170) at sys_read+0x83 sys/kern/sys_generic.c:157
syscall(ffff8000225131f0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000225131f0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x576c314b1a0, count: -8