panic: pr_find_pagehead: mbufpl: page header missing
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff824249be) at panic+0x15c sys/kern/subr_prf.c:207
pool_do_put(ffffffff82848690,fffffd8052000000) at pool_do_put+0x36a
pool_put(ffffffff82848690,fffffd8052000000) at pool_put+0x4b sys/kern/subr_pool.c:794
m_free(fffffd8052000000) at m_free+0x119 sys/kern/uipc_mbuf.c:459
ml_purge(ffff80001d780998) at ml_purge+0x50 m_freem sys/kern/uipc_mbuf.c:538 [inline]
ml_purge(ffff80001d780998) at ml_purge+0x50 sys/kern/uipc_mbuf.c:1628
ifq_purge(ffff800000ac4a78) at ifq_purge+0x97 sys/net/ifq.c:462
tun_dev_close(5d01,7) at tun_dev_close+0xc8 sys/net/if_tun.c:460
spec_close(ffff80001d780ac0) at spec_close+0x311 sys/kern/spec_vnops.c:560
VOP_CLOSE(fffffd805db598f0,7,fffffd806c3bf960,ffff80001d6aa388) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174
vn_closefile(fffffd80576e61f0,ffff80001d6aa388) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline]
vn_closefile(fffffd80576e61f0,ffff80001d6aa388) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614
fdrop(fffffd80576e61f0,ffff80001d6aa388) at fdrop+0xc2 sys/kern/kern_descrip.c:1279
closef(fffffd80576e61f0,ffff80001d6aa388) at closef+0x117 sys/kern/kern_descrip.c:1263
fdfree(ffff80001d6aa388) at fdfree+0x100 sys/kern/kern_descrip.c:1195
end trace frame: 0xffff80001d780d10, count: 0
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>
ddb> set $lines = 0
ddb> set $maxwidth = 0
ddb> show panic
pr_find_pagehead: mbufpl: page header missing
ddb> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff824249be) at panic+0x15c sys/kern/subr_prf.c:207
pool_do_put(ffffffff82848690,fffffd8052000000) at pool_do_put+0x36a
pool_put(ffffffff82848690,fffffd8052000000) at pool_put+0x4b sys/kern/subr_pool.c:794
m_free(fffffd8052000000) at m_free+0x119 sys/kern/uipc_mbuf.c:459
ml_purge(ffff80001d780998) at ml_purge+0x50 m_freem sys/kern/uipc_mbuf.c:538 [inline]
ml_purge(ffff80001d780998) at ml_purge+0x50 sys/kern/uipc_mbuf.c:1628
ifq_purge(ffff800000ac4a78) at ifq_purge+0x97 sys/net/ifq.c:462
tun_dev_close(5d01,7) at tun_dev_close+0xc8 sys/net/if_tun.c:460
spec_close(ffff80001d780ac0) at spec_close+0x311 sys/kern/spec_vnops.c:560
VOP_CLOSE(fffffd805db598f0,7,fffffd806c3bf960,ffff80001d6aa388) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174
vn_closefile(fffffd80576e61f0,ffff80001d6aa388) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline]
vn_closefile(fffffd80576e61f0,ffff80001d6aa388) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614
fdrop(fffffd80576e61f0,ffff80001d6aa388) at fdrop+0xc2 sys/kern/kern_descrip.c:1279
closef(fffffd80576e61f0,ffff80001d6aa388) at closef+0x117 sys/kern/kern_descrip.c:1263
fdfree(ffff80001d6aa388) at fdfree+0x100 sys/kern/kern_descrip.c:1195
exit1(ffff80001d6aa388,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197
postsig(ffff80001d6aa388,19) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline]
postsig(ffff80001d6aa388,19) at postsig+0x4b2 sys/kern/kern_sig.c:1415
userret(ffff80001d6aa388) at userret+0x159 sys/kern/kern_sig.c:1872
syscall(ffff80001d780f40) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline]
syscall(ffff80001d780f40) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffe3030, count: -19
ddb> show registers
rdi 0
rsi 0x1
rbp 0xffff80001d780740
rbx 0xffff80001d7807f0
rdx 0x2
rcx 0
rax 0x1
r8 0xffffffff815644df kprintf+0x15f
r9 0x1
r10 0x2
r11 0x3268c78c28458f85
r12 0x3000000008
r13 0xffff80001d780750
r14 0x100
r15 0x1
rip 0xffffffff8109a488 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff80001d780730
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb> show proc
PROC (syz-executor.1) pid=3177 stat=onproc
flags process=a<EXEC,EXITING,8ORPHAN> proc=2000<WEXIT>
pri=17, usrpri=74, nice=20
forw=0xffffffffffffffff, list=0xffff80001d6aa118,0xffff80001d6a9018
process=0xffff8000ffffb208 user=0xffff80001d77b000, vmspace=0xfffffd806bc0a440
estcpu=36, cpticks=1, pctcpu=0.0
user=0, sys=1, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
80072 41595 44985 0 3 0x80 nanosleep syz-executor.0
80072 331951 44985 0 3 0x4000080 netcon syz-executor.0
80072 283991 44985 0 3 0x4000080 fsleep syz-executor.0
6433 51668 0 0 3 0x14280 nfsidl nfsio
64931 480297 0 0 3 0x14280 nfsidl nfsio
14997 248982 0 0 3 0x14280 nfsidl nfsio
52933 252398 0 0 3 0x14280 nfsidl nfsio
68246 302938 0 0 3 0x14280 nfsidl nfsio
98104 220968 0 0 3 0x14280 nfsidl nfsio
32503 487538 0 0 3 0x14280 nfsidl nfsio
13256 112104 0 0 3 0x14280 nfsidl nfsio
26974 343205 0 0 3 0x14280 nfsidl nfsio
36701 137212 0 0 3 0x14280 nfsidl nfsio
21296 321568 0 0 3 0x14280 nfsidl nfsio
29642 346082 0 0 3 0x14280 nfsidl nfsio
89756 142440 0 0 3 0x14280 nfsidl nfsio
27572 1613 0 0 3 0x14280 nfsidl nfsio
1761 326478 0 0 3 0x14280 nfsidl nfsio
79958 227564 0 0 3 0x14280 nfsidl nfsio
42397 380607 0 0 3 0x14280 nfsidl nfsio
70602 498952 0 0 3 0x14280 nfsidl nfsio
30629 290984 0 0 3 0x14280 nfsidl nfsio
66572 22385 0 0 3 0x14280 nfsidl nfsio
99345 513191 0 0 3 0x14200 acct acct
42807 68980 0 0 3 0x14200 bored sosplice
44985 120736 61540 0 3 0x82 nanosleep syz-executor.0
61540 211440 26367 0 2 0x82 syz-fuzzer
61540 157180 26367 0 3 0x4000082 nanosleep syz-fuzzer
61540 414957 26367 0 3 0x4000082 thrsleep syz-fuzzer
61540 196455 26367 0 3 0x4000082 thrsleep syz-fuzzer
61540 272952 26367 0 3 0x4000082 thrsleep syz-fuzzer
61540 433932 26367 0 3 0x4000082 thrsleep syz-fuzzer
61540 119942 26367 0 3 0x4000082 thrsleep syz-fuzzer
61540 189193 26367 0 3 0x4000082 thrsleep syz-fuzzer
26367 280452 68838 0 3 0x10008a pause ksh
68838 517019 79714 0 3 0x92 select sshd
82949 236981 1 0 3 0x100083 ttyin getty
79714 291314 1 0 3 0x80 select sshd
91015 40602 86468 73 3 0x100090 kqread syslogd
86468 190640 1 0 3 0x100082 netio syslogd
38121 116437 1 77 3 0x100090 poll dhclient
14725 195901 1 0 3 0x80 poll dhclient
13870 150548 0 0 3 0x14200 bored smr
43013 361617 0 0 2 0x14200 zerothread
65813 487576 0 0 3 0x14200 aiodoned aiodoned
69524 161700 0 0 3 0x14200 syncer update
70122 487010 0 0 3 0x14200 cleaner cleaner
75820 147745 0 0 3 0x14200 reaper reaper
80954 201297 0 0 3 0x14200 pgdaemon pagedaemon
52166 374145 0 0 3 0x14200 bored crynlk
81340 129215 0 0 3 0x14200 bored crypto
54175 145249 0 0 3 0x40014200 acpi0 acpi0
20855 245864 0 0 3 0x14200 bored softnet
77077 390391 0 0 3 0x14200 bored systqmp
21801 283313 0 0 3 0x14200 bored systq
91373 507621 0 0 3 0x40014200 bored softclock
47282 203565 0 0 3 0x40014200 idle0
1 208989 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
devbuf 9535 6506K 6762K 78643K 12477 0
pcb 13 8K 9K 78643K 1132 0
rtable 130 10K 12K 78643K 1113 0
ifaddr 133 28K 28K 78643K 437 0
counters 21 16K 16K 78643K 47 0
ioctlops 0 0K 4K 78643K 230 0
iov 0 0K 20K 78643K 231 0
mount 1 1K 1K 78643K 1 0
vnodes 1218 77K 77K 78643K 1811 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 5K 78643K 14 0
VM map 2 0K 0K 78643K 2 0
sem 12 0K 0K 78643K 166 0
dirhash 9 1K 2K 78643K 12 0
ACPI 1809 195K 288K 78643K 12938 0
file desc 5 13K 25K 78643K 1151 0
sigio 0 0K 0K 78643K 17 0
proc 50 38K 63K 78643K 503 0
subproc 23 1K 2K 78643K 38 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 85 0
in_multi 159 6K 6K 78643K 413 0
ether_multi 1 0K 0K 78643K 33 0
mrt 0 0K 0K 78643K 14 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 55 254K 254K 78643K 55 0
exec 0 0K 1K 78643K 298 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 168 203K 203K 78643K 4029 0
UVM aobj 95 8K 8K 78643K 106 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 173 0
NDP 15 0K 0K 78643K 74 0
temp 162 3900K 3965K 78643K 60863 0
kqueue 4 6K 24K 78643K 58 0
SYN cache 2 16K 16K 78643K 2 0
ddb> 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
rtpcb 80 100 0 98 1 0 1 1 0 8 0
rtentry 112 119 0 79 2 0 2 2 0 8 0
unpcb 120 431 0 423 1 0 1 1 0 8 0
syncache 264 17 0 17 5 5 0 1 0 8 0
sackhl 24 1 0 1 1 1 0 1 0 8 0
tcpqe 32 62 0 62 2 2 0 1 0 8 0
tcpcb 544 1033 0 1028 2 1 1 2 0 8 0
ipq 40 9 0 9 4 3 1 1 0 8 1
ipqe 40 192 0 192 4 3 1 1 0 8 1
inpcb 296 2735 0 2727 4 2 2 3 0 8 1
rttmr 72 4 0 4 2 2 0 1 0 8 0
ip6q 72 4 0 4 2 2 0 1 0 8 0
ip6af 40 12 0 12 2 2 0 1 0 8 0
nd6 48 49 0 47 1 0 1 1 0 8 0
pkpcb 40 18 0 18 4 4 0 1 0 8 0
ppxss 1128 3 0 3 3 3 0 1 0 8 0
pfstscr 40 10 0 5 1 0 1 1 0 8 0
pfosfp 40 1 0 0 1 0 1 1 0 8 0
pfosfpen 112 1 0 0 1 0 1 1 0 8 0
pfrktable 1344 264 0 252 6 5 1 2 0 8 0
pftag 88 36 0 32 3 2 1 1 0 8 0
pfstitem 24 16 0 4 1 0 1 1 0 8 0
pfstkey 112 22 0 10 1 0 1 1 0 8 0
pfstate 328 11 0 5 1 0 1 1 0 8 0
pfrule 1360 72 0 42 3 0 3 3 0 8 0
art_heap8 4096 2 0 0 2 0 2 2 0 8 0
art_heap4 256 449 0 282 15 3 12 14 0 8 0
art_table 32 451 0 282 2 0 2 2 0 8 0
art_node 16 118 0 82 1 0 1 1 0 8 0
sysvmsgpl 40 46 0 15 1 0 1 1 0 8 0
semapl 112 164 0 154 1 0 1 1 0 8 0
shmpl 112 104 0 12 3 0 3 3 0 8 0
dirhash 1024 17 0 10 3 1 2 3 0 8 0
dino2pl 256 3087 0 1695 88 0 88 88 0 8 0
ffsino 240 3087 0 1695 83 0 83 83 0 8 0
nchpl 144 4945 0 3352 60 0 60 60 0 8 0
uvmvnodes 72 3519 0 0 64 0 64 64 0 8 0
vnodes 208 3519 0 0 186 0 186 186 0 8 0
namei 1024 14023 0 14023 2 1 1 1 0 8 1
vcpupl 1984 20 0 0 3 0 3 3 0 8 0
vmpool 528 23 0 3 2 0 2 2 0 8 0
pfiaddrpl 120 116 0 92 3 2 1 1 0 8 0
scxspl 192 16036 0 16036 1 0 1 1 0 8 1
plimitpl 152 127 0 120 1 0 1 1 0 8 0
sigapl 424 1359 0 1309 6 0 6 6 0 8 0
futexpl 56 26536 0 26535 2 1 1 1 0 8 0
knotepl 112 184 0 164 2 1 1 2 0 8 0
kqueuepl 144 160 0 154 1 0 1 1 0 8 0
pipelkpl 16 198 0 188 1 0 1 1 0 8 0
pipepl 120 396 0 378 1 0 1 1 0 8 0
fdescpl 432 1323 0 1309 2 0 2 2 0 8 0
filepl 120 9421 0 9329 4 0 4 4 0 8 0
lockfpl 104 311 0 310 1 0 1 1 0 8 0
lockfspl 48 116 0 115 1 0 1 1 0 8 0
sessionpl 112 17 0 7 1 0 1 1 0 8 0
pgrppl 48 123 0 113 1 0 1 1 0 8 0
ucredpl 96 897 0 890 1 0 1 1 0 8 0
zombiepl 144 1310 0 1309 1 0 1 1 0 8 0
processpl 920 1359 0 1309 7 0 7 7 0 8 0
procpl 624 3240 0 3181 9 3 6 6 0 8 1
sosppl 128 26 0 26 6 5 1 1 0 8 1
sockpl 400 3302 0 3284 10 7 3 4 0 8 0
mcl64k 65536 358 0 358 33 32 1 29 0 8 1
mcl16k 16384 4 0 4 3 2 1 1 0 8 1
mcl12k 12288 43 0 43 7 6 1 1 0 8 1
mcl9k 9216 18 0 18 8 8 0 1 0 8 0
mcl8k 8192 51 0 51 8 7 1 1 0 8 1
mcl4k 4096 87 0 87 5 4 1 1 0 8 1
mcl2k2 2112 8 0 8 6 6 0 1 0 8 0
mcl2k 2048 76452 0 76400 17 9 8 12 0 8 0
mtagpl 96 157 0 68 5 1 4 4 0 8 0
mbufpl 256 137940 0 137552 93 47 46 57 0 8 0
bufpl 280 6880 0 1528 383 0 383 383 0 8 0
anonpl 16 144492 0 128253 120 49 71 82 0 107 3
amapchunkpl 152 7570 0 7411 45 36 9 16 0 158 2
amappl16 192 6473 0 5561 75 28 47 58 0 8 0
amappl15 184 569 0 567 1 0 1 1 0 8 0
amappl14 176 23 0 19 1 0 1 1 0 8 0
amappl13 168 26 0 23 1 0 1 1 0 8 0
amappl12 160 17 0 14 1 0 1 1 0 8 0
amappl11 152 613 0 603 1 0 1 1 0 8 0
amappl10 144 563 0 557 1 0 1 1 0 8 0
amappl9 136 351 0 349 1 0 1 1 0 8 0
amappl8 128 357 0 310 2 0 2 2 0 8 0
amappl7 120 658 0 644 1 0 1 1 0 8 0
amappl6 112 590 0 584 1 0 1 1 0 8 0
amappl5 104 751 0 739 1 0 1 1 0 8 0
amappl4 96 997 0 971 1 0 1 1 0 8 0
amappl3 88 159 0 153 1 0 1 1 0 8 0
amappl2 80 9790 0 9723 2 0 2 2 0 8 0
amappl1 72 33789 0 33375 23 13 10 17 0 8 0
amappl 80 3479 0 3423 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 64 105 0 11 2 0 2 2 0 8 0
uaddrrnd 24 1346 0 1312 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 1346 0 1312 1 0 1 1 0 8 0
vmmpekpl 168 12073 0 12033 2 0 2 2 0 8 0
vmmpepl 168 161436 0 159397 137 42 95 106 0 357 1
vmsppl 272 1345 0 1312 4 1 3 3 0 8 0
pdppl 4096 2698 0 2644 9 1 8 8 0 8 0
pvpl 32 392532 0 373239 256 81 175 196 0 265 13
pmappl 200 1345 0 1312 2 0 2 2 0 8 0
extentpl 40 53 0 36 1 0 1 1 0 8 0
phpool 112 391 0 121 9 0 9 9 0 8 0
ddb> machine ddbcpu 0
No such command
ddb> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff824249be) at panic+0x15c sys/kern/subr_prf.c:207
pool_do_put(ffffffff82848690,fffffd8052000000) at pool_do_put+0x36a
pool_put(ffffffff82848690,fffffd8052000000) at pool_put+0x4b sys/kern/subr_pool.c:794
m_free(fffffd8052000000) at m_free+0x119 sys/kern/uipc_mbuf.c:459
ml_purge(ffff80001d780998) at ml_purge+0x50 m_freem sys/kern/uipc_mbuf.c:538 [inline]
ml_purge(ffff80001d780998) at ml_purge+0x50 sys/kern/uipc_mbuf.c:1628
ifq_purge(ffff800000ac4a78) at ifq_purge+0x97 sys/net/ifq.c:462
tun_dev_close(5d01,7) at tun_dev_close+0xc8 sys/net/if_tun.c:460
spec_close(ffff80001d780ac0) at spec_close+0x311 sys/kern/spec_vnops.c:560
VOP_CLOSE(fffffd805db598f0,7,fffffd806c3bf960,ffff80001d6aa388) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174
vn_closefile(fffffd80576e61f0,ffff80001d6aa388) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline]
vn_closefile(fffffd80576e61f0,ffff80001d6aa388) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614
fdrop(fffffd80576e61f0,ffff80001d6aa388) at fdrop+0xc2 sys/kern/kern_descrip.c:1279
closef(fffffd80576e61f0,ffff80001d6aa388) at closef+0x117 sys/kern/kern_descrip.c:1263
fdfree(ffff80001d6aa388) at fdfree+0x100 sys/kern/kern_descrip.c:1195
exit1(ffff80001d6aa388,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197
postsig(ffff80001d6aa388,19) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline]
postsig(ffff80001d6aa388,19) at postsig+0x4b2 sys/kern/kern_sig.c:1415
userret(ffff80001d6aa388) at userret+0x159 sys/kern/kern_sig.c:1872
syscall(ffff80001d780f40) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline]
syscall(ffff80001d780f40) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffe3030, count: -19
ddb> machine ddbcpu 1
No such command
ddb> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff824249be) at panic+0x15c sys/kern/subr_prf.c:207
pool_do_put(ffffffff82848690,fffffd8052000000) at pool_do_put+0x36a
pool_put(ffffffff82848690,fffffd8052000000) at pool_put+0x4b sys/kern/subr_pool.c:794
m_free(fffffd8052000000) at m_free+0x119 sys/kern/uipc_mbuf.c:459
ml_purge(ffff80001d780998) at ml_purge+0x50 m_freem sys/kern/uipc_mbuf.c:538 [inline]
ml_purge(ffff80001d780998) at ml_purge+0x50 sys/kern/uipc_mbuf.c:1628
ifq_purge(ffff800000ac4a78) at ifq_purge+0x97 sys/net/ifq.c:462
tun_dev_close(5d01,7) at tun_dev_close+0xc8 sys/net/if_tun.c:460
spec_close(ffff80001d780ac0) at spec_close+0x311 sys/kern/spec_vnops.c:560
VOP_CLOSE(fffffd805db598f0,7,fffffd806c3bf960,ffff80001d6aa388) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174
vn_closefile(fffffd80576e61f0,ffff80001d6aa388) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline]
vn_closefile(fffffd80576e61f0,ffff80001d6aa388) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614
fdrop(fffffd80576e61f0,ffff80001d6aa388) at fdrop+0xc2 sys/kern/kern_descrip.c:1279
closef(fffffd80576e61f0,ffff80001d6aa388) at closef+0x117 sys/kern/kern_descrip.c:1263
fdfree(ffff80001d6aa388) at fdfree+0x100 sys/kern/kern_descrip.c:1195
exit1(ffff80001d6aa388,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197
postsig(ffff80001d6aa388,19) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline]
postsig(ffff80001d6aa388,19) at postsig+0x4b2 sys/kern/kern_sig.c:1415
userret(ffff80001d6aa388) at userret+0x159 sys/kern/kern_sig.c:1872
syscall(ffff80001d780f40) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline]
syscall(ffff80001d780f40) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffe3030, count: -19