panic: pool_do_get: fdescpl free list modified: page 0xfffffd806648a000; item addr 0xfffffd806648ad98; offset 0x48=0xdead4113
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
462097 96757 32767 0x10 0 1 syz-executor.6
*202135 91371 32767 0x10 0 0K syz-executor.1
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff827bd7c7) at panic+0x177 sys/kern/subr_prf.c:198
pool_do_get(ffffffff82c89eb0,9,ffff800023cf8ef8) at pool_do_get+0x474 sys/kern/subr_pool.c:739
pool_get(ffffffff82c89eb0,9) at pool_get+0xe9 sys/kern/subr_pool.c:582
fdcopy(ffff8000ffff9928) at fdcopy+0x44 fdinit sys/kern/kern_descrip.c:1067 [inline]
fdcopy(ffff8000ffff9928) at fdcopy+0x44 sys/kern/kern_descrip.c:1106
process_new(ffff800029588350,ffff8000ffff9928,1) at process_new+0x2bc sys/kern/kern_fork.c:255
fork1(ffff8000212142d8,1,ffffffff81cbbb00,0,ffff800023cf9140,0) at fork1+0x30b sys/kern/kern_fork.c:379
syscall(ffff800023cf91c0) at syscall+0x555 mi_syscall sys/sys/syscall_mi.h:113 [inline]
syscall(ffff800023cf91c0) at syscall+0x555 sys/arch/amd64/amd64/trap.c:626
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7fffff9620, count: 6
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{0}>
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
*cpu0: pool_do_get: fdescpl free list modified: page 0xfffffd806648a000; item addr 0xfffffd806648ad98; offset 0x48=0xdead4113
ddb{0}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff827bd7c7) at panic+0x177 sys/kern/subr_prf.c:198
pool_do_get(ffffffff82c89eb0,9,ffff800023cf8ef8) at pool_do_get+0x474 sys/kern/subr_pool.c:739
pool_get(ffffffff82c89eb0,9) at pool_get+0xe9 sys/kern/subr_pool.c:582
fdcopy(ffff8000ffff9928) at fdcopy+0x44 fdinit sys/kern/kern_descrip.c:1067 [inline]
fdcopy(ffff8000ffff9928) at fdcopy+0x44 sys/kern/kern_descrip.c:1106
process_new(ffff800029588350,ffff8000ffff9928,1) at process_new+0x2bc sys/kern/kern_fork.c:255
fork1(ffff8000212142d8,1,ffffffff81cbbb00,0,ffff800023cf9140,0) at fork1+0x30b sys/kern/kern_fork.c:379
syscall(ffff800023cf91c0) at syscall+0x555 mi_syscall sys/sys/syscall_mi.h:113 [inline]
syscall(ffff800023cf91c0) at syscall+0x555 sys/arch/amd64/amd64/trap.c:626
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7fffff9620, count: -9
ddb{0}> show registers
rdi 0
rsi 0x1
rbp 0xffff800023cf8d40
rbx 0xffffffff82bf4b8f cpu_info_full_primary+0x2b8f
rdx 0
rcx 0
rax 0xffff8000212142d8
r8 0x101010101010101
r9 0x8080808080808080
r10 0x1dbfd82d95dba4d
r11 0xaf1a1758fd3da14f
r12 0xffffffff82bf4990 cpu_info_full_primary+0x2990
r13 0
r14 0
r15 0x1
rip 0xffffffff8149c648 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff800023cf8d30
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb{0}> show proc
PROC (syz-executor.1) pid=202135 stat=onproc
flags process=10<SUGID> proc=0
pri=81, usrpri=81, nice=20
forw=0xffffffffffffffff, list=0xffff800021214590,0xffff800021215338
process=0xffff8000ffff9928 user=0xffff800023cf4000, vmspace=0xfffffd807effba50
estcpu=36, cpticks=1, pctcpu=0.4
user=0, sys=1, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
60164 215570 19259 32767 2 0x10 syz-executor.4
513 177523 33638 32767 2 0x10 syz-executor.7
513 166871 33638 32767 3 0x4000090 fsleep syz-executor.7
513 41563 33638 32767 3 0x4000090 netcon syz-executor.7
59459 186362 79894 32767 2 0x490 syz-executor.3
59459 474206 79894 32767 3 0x4000090 netcon syz-executor.3
59459 171332 79894 32767 3 0x4000090 fsleep syz-executor.3
23166 296862 65012 32767 2 0x10 syz-executor.2
23166 246654 65012 32767 3 0x4000090 sysctllk syz-executor.2
23166 200147 65012 32767 3 0x4000090 fsleep syz-executor.2
31964 452784 78961 32767 3 0x90 nanoslp syz-executor.5
31964 177697 78961 32767 3 0x4000090 fsleep syz-executor.5
31964 74794 78961 32767 3 0x4000090 fsleep syz-executor.5
31964 286393 78961 32767 3 0x4000010 fdlock syz-executor.5
78961 54439 79761 32767 2 0x490 syz-executor.5
79761 210839 85745 0 3 0x82 wait syz-executor.5
11811 501194 0 0 3 0x14200 bored sosplice
96757 462097 62193 32767 7 0x10 syz-executor.6
33638 455854 96084 32767 3 0x90 nanoslp syz-executor.7
62193 80740 85745 0 3 0x82 wait syz-executor.6
96084 480925 85745 0 3 0x82 wait syz-executor.7
79894 92270 72898 32767 2 0x490 syz-executor.3
19259 476068 19711 32767 3 0x90 nanoslp syz-executor.4
19711 316236 85745 0 3 0x82 wait syz-executor.4
65012 397393 41945 32767 2 0x490 syz-executor.2
72898 336367 85745 0 3 0x82 wait syz-executor.3
*91371 202135 59115 32767 7 0x10 syz-executor.1
41945 138056 85745 0 3 0x82 wait syz-executor.2
5722 171030 84791 32767 2 0x10 syz-executor.0
59115 514002 85745 0 3 0x82 wait syz-executor.1
84791 424302 85745 0 3 0x82 wait syz-executor.0
85745 365494 50786 0 3 0x82 wait syz-fuzzer
85745 142573 50786 0 3 0x4000082 nanoslp syz-fuzzer
85745 343809 50786 0 3 0x4000082 wait syz-fuzzer
85745 302378 50786 0 3 0x4000082 thrsleep syz-fuzzer
85745 45203 50786 0 3 0x4000082 wait syz-fuzzer
85745 386878 50786 0 3 0x4000082 wait syz-fuzzer
85745 347191 50786 0 3 0x4000082 wait syz-fuzzer
85745 3710 50786 0 3 0x4000082 wait syz-fuzzer
85745 286050 50786 0 3 0x4000082 kqread syz-fuzzer
85745 425062 50786 0 3 0x4000082 thrsleep syz-fuzzer
85745 30307 50786 0 3 0x4000082 thrsleep syz-fuzzer
85745 49992 50786 0 3 0x4000082 thrsleep syz-fuzzer
85745 150463 50786 0 3 0x4000082 wait syz-fuzzer
85745 294238 50786 0 3 0x4000082 wait syz-fuzzer
85745 380959 50786 0 3 0x4000082 thrsleep syz-fuzzer
85745 70364 50786 0 3 0x4000082 thrsleep syz-fuzzer
50786 57812 69029 0 3 0x10008a sigsusp ksh
69029 349874 5778 0 3 0x9a kqread sshd
71767 159839 1 0 3 0x100083 ttyin getty
5778 156499 1 0 3 0x88 kqread sshd
62015 299867 49271 73 3 0x1100090 kqread syslogd
49271 25232 1 0 3 0x100082 netio syslogd
32326 508387 1 0 3 0x100080 kqread resolvd
48626 250184 11367 77 3 0x100092 kqread dhcpleased
26361 391838 11367 77 3 0x100092 kqread dhcpleased
11367 72788 1 0 3 0x80 kqread dhcpleased
81956 513405 0 0 3 0x14200 bored smr
63660 92351 0 0 2 0x14200 zerothread
32397 301429 0 0 3 0x14200 aiodoned aiodoned
89921 463036 0 0 3 0x14200 syncer update
21400 398676 0 0 3 0x14200 cleaner cleaner
27824 520464 0 0 3 0x14200 reaper reaper
12880 304036 0 0 3 0x14200 pgdaemon pagedaemon
93493 155279 0 0 3 0x14200 bored viomb
32813 122091 0 0 3 0x40014200 acpi0 acpi0
59540 197634 0 0 3 0x40014200 idle1
47653 98917 0 0 3 0x14200 bored softnet
93708 385460 0 0 3 0x14200 bored softnet
83815 399997 0 0 3 0x14200 bored softnet
77085 506516 0 0 3 0x14200 bored softnet
5037 400538 0 0 3 0x14200 bored systqmp
52328 444146 0 0 3 0x14200 bored systq
12419 418127 0 0 2 0x40014200 softclock
80832 194363 0 0 3 0x40014200 idle0
1 22964 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
CPU 0:
exclusive mutex fdescpl r = 0 (0xffffffff82c89ec0)
#0 witness_lock+0x44d
#1 mtx_enter_try+0x100
#2 mtx_enter+0x4b sys/kern/kern_lock.c:266
#3 pool_get+0xbd sys/kern/subr_pool.c:579
#4 fdcopy+0x44 fdinit sys/kern/kern_descrip.c:1067 [inline]
#4 fdcopy+0x44 sys/kern/kern_descrip.c:1106
#5 process_new+0x2bc sys/kern/kern_fork.c:255
#6 fork1+0x30b sys/kern/kern_fork.c:379
#7 syscall+0x555 mi_syscall sys/sys/syscall_mi.h:113 [inline]
#7 syscall+0x555 sys/arch/amd64/amd64/trap.c:626
#8 Xsyscall+0x128
Process 31964 (syz-executor.5) thread 0xffff800023cfa2e8 (286393)
exclusive rwlock sysctllk r = 0 (0xffffffff82be1630)
#0 witness_lock+0x44d
#1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2 sys_sysctl+0x1b3 sys/kern/kern_sysctl.c:234
#3 syscall+0x555 mi_syscall sys/sys/syscall_mi.h:113 [inline]
#3 syscall+0x555 sys/arch/amd64/amd64/trap.c:626
#4 Xsyscall+0x128
Process 91371 (syz-executor.1) thread 0xffff8000212142d8 (202135)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82daf378)
#0 witness_lock+0x44d
#1 syscall+0x53d mi_syscall sys/sys/syscall_mi.h:112 [inline]
#1 syscall+0x53d sys/arch/amd64/amd64/trap.c:626
#2 Xsyscall+0x128
exclusive mutex fdescpl r = 0 (0xffffffff82c89ec0)
#0 witness_lock+0x44d
#1 mtx_enter_try+0x100
#2 mtx_enter+0x4b sys/kern/kern_lock.c:266
#3 pool_get+0xbd sys/kern/subr_pool.c:579
#4 fdcopy+0x44 fdinit sys/kern/kern_descrip.c:1067 [inline]
#4 fdcopy+0x44 sys/kern/kern_descrip.c:1106
#5 process_new+0x2bc sys/kern/kern_fork.c:255
#6 fork1+0x30b sys/kern/kern_fork.c:379
#7 syscall+0x555 mi_syscall sys/sys/syscall_mi.h:113 [inline]
#7 syscall+0x555 sys/arch/amd64/amd64/trap.c:626
#8 Xsyscall+0x128
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10216 6412K 6421K 78643K 11313 0
pcb 13 12K 14K 78643K 17 0
rtable 242 6K 7K 78643K 565 0
ifaddr 73 24K 24K 78643K 87 0
sysctl 3 1K 1K 78643K 3 0
counters 60 35K 35K 78643K 64 0
ioctlops 0 0K 2K 78643K 54 0
iov 0 0K 28K 78643K 1219 0
mount 1 1K 1K 78643K 1 0
log 0 0K 0K 78643K 4 0
vnodes 1272 80K 80K 78643K 2451 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 9K 78643K 102 0
VM map 2 1K 1K 78643K 2 0
sem 12 0K 0K 78643K 2698 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1697 195K 286K 78643K 12548 0
file desc 23 85K 121K 78643K 5673 0
sigio 0 0K 0K 78643K 81 0
proc 56 78K 103K 78643K 905 0
subproc 104 6K 6K 78643K 130 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 809 0
in_multi 99 6K 7K 78643K 197 0
ether_multi 1 0K 0K 78643K 21 0
mrt 1 0K 0K 78643K 1 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 169 758K 758K 78643K 169 0
exec 0 0K 1K 78643K 1087 0
tdb 3 0K 0K 78643K 3 0
pagedep 1 8K 8K 78643K 1 0
inodedep 1 32K 32K 78643K 1 0
newblk 1 0K 0K 78643K 1 0
VM swap 8 62K 64K 78643K 10 0
UVM amap 385 95K 111K 78643K 43498 0
UVM aobj 131 4K 4K 78643K 131 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 281 0
NDP 11 0K 2K 78643K 33 0
temp 125 5779K 5906K 78643K 17359 0
kqueue 12 18K 25K 78643K 420 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
plcache 128 22 0 0 1 0 1 1 0 8 0
rtpcb 120 952 0 949 15 14 1 3 0 8 0
rtentry 112 139 0 25 4 0 4 4 0 8 0
unpcb 144 5090 0 5077 44 38 6 6 0 8 5
syncache 296 79 0 79 13 13 0 1 0 8 0
tcpqe 32 106 0 106 11 11 0 1 0 8 0
tcpcb 776 9543 0 9499 132 123 9 21 0 8 4
arp 120 24 0 5 1 0 1 1 0 8 0
ipq 40 10 0 6 4 3 1 1 0 8 0
ipqe 40 35 0 31 4 3 1 1 0 8 0
inpcb 368 12343 0 12294 136 127 9 19 0 8 4
nd6 48 34 0 7 1 0 1 1 0 8 0
kcovpl 48 10 0 2 1 0 1 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 555 0 91 30 0 30 30 0 8 0
art_table 32 556 0 91 4 0 4 4 0 8 0
art_node 16 138 0 34 1 0 1 1 0 8 0
sysvmsgpl 40 1 0 1 1 1 0 1 0 8 0
semapl 112 2694 0 2684 1 0 1 1 0 8 0
shmpl 112 128 0 0 4 0 4 4 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 9086 0 7643 92 1 91 91 0 8 0
ffsino 272 9086 0 7643 98 1 97 97 0 8 0
nchpl 144 16680 0 15046 63 0 63 63 0 8 0
uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0
vnodes 216 5926 0 0 330 0 330 330 0 8 0
namei 1024 59420 0 59420 2 1 1 2 0 8 1
percpumem 16 45 0 2 1 0 1 1 0 8 0
kstatmem 264 26 0 4 2 0 2 2 0 8 0
scxspl 216 54094 0 54094 25 23 2 8 0 8 2
plimitpl 152 1163 0 1139 11 9 2 2 0 8 1
sigapl 424 5962 0 5910 7 0 7 7 0 8 0
futexpl 64 57318 0 57313 1 0 1 1 0 8 0
knotepl 120 450 0 0 10 1 9 10 0 8 0
kqueuepl 216 1577 0 1569 42 41 1 6 0 8 0
pipepl 320 1875 0 1847 60 56 4 13 0 8 1
fdescpl 496 5944 0 5910 6 1 5 6 0 8 0
pool(0xffffffff82c89eb0:fdescpl): page inconsistency: page 0xfffffd806648a000; 2 on list, 5 missing, 8 items per page
filepl 152 49563 0 49290 94 78 16 20 0 8 5
lockfpl 104 513 0 511 1 0 1 1 0 8 0
lockfspl 48 208 0 206 1 0 1 1 0 8 0
sessionpl 144 25 0 9 1 0 1 1 0 8 0
pgrppl 48 668 0 652 1 0 1 1 0 8 0
ucredpl 104 6780 0 6762 1 0 1 1 0 8 0
zombiepl 144 5910 0 5910 1 0 1 1 0 8 1
processpl 1072 5963 0 5910 5 1 4 5 0 8 0
procpl 696 18196 0 18119 22 13 9 9 0 8 1
sosppl 168 64 0 62 11 10 1 1 0 8 0
sockpl 488 18550 0 18487 359 345 14 30 0 8 6
mcl64k 65536 25 0 0 4 1 3 3 0 8 0
mcl16k 16384 17 0 0 3 0 3 3 0 8 0
mcl12k 12288 25 0 0 2 0 2 2 0 8 0
mcl9k 9216 18 0 0 2 0 2 2 0 8 0
mcl8k 8192 26 0 0 4 1 3 3 0 8 0
mcl4k 4096 34 0 0 4 1 3 3 0 8 0
mcl2k2 2112 7 0 0 1 0 1 1 0 8 0
mcl2k 2048 328 0 0 31 3 28 31 0 8 0
mtagpl 96 4 0 0 1 0 1 1 0 8 0
mbufpl 256 1524 0 0 81 0 81 81 0 8 0
bufpl 288 13968 0 7647 452 0 452 452 0 8 0
anonpl 24 1333970 0 1319588 216 105 111 136 0 186 0
amapchunkpl 152 173250 0 172439 121 78 43 47 0 158 8
amappl16 200 16810 0 16455 129 108 21 42 0 8 0
amappl15 192 30 0 28 1 0 1 1 0 8 0
amappl14 184 160 0 146 2 1 1 2 0 8 0
amappl13 176 14 0 12 1 0 1 1 0 8 0
amappl12 168 430 0 427 1 0 1 1 0 8 0
amappl11 160 47 0 36 1 0 1 1 0 8 0
amappl10 152 41 0 29 1 0 1 1 0 8 0
amappl9 144 980 0 980 3 2 1 1 0 8 1
amappl8 136 409 0 297 4 0 4 4 0 8 0
amappl7 128 161 0 138 2 0 2 2 0 8 0
amappl6 120 224 0 212 2 1 1 2 0 8 0
amappl5 112 217 0 210 1 0 1 1 0 8 0
amappl4 104 620 0 595 2 1 1 2 0 8 0
amappl3 96 18581 0 18518 3 1 2 3 0 8 0
amappl2 88 6629 0 6554 3 1 2 3 0 8 0
amappl1 80 140353 0 139584 27 9 18 26 0 8 0
amappl 88 42708 0 42485 7 1 6 6 0 92 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 72 130 0 0 3 0 3 3 0 8 0
uaddrrnd 24 5944 0 5910 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 5944 0 5910 1 0 1 1 0 8 0
vmmpekpl 168 56470 0 56403 4 0 4 4 0 8 0
vmmpepl 168 561470 0 558644 213 76 137 148 0 357 2
vmsppl 440 5943 0 5910 5 0 5 5 0 8 0
rwobjpl 56 163262 0 155650 119 8 111 114 0 8 0
pdppl 4096 11895 0 11820 208 127 81 93 0 8 6
pvpl 32 2504110 0 2483630 491 292 199 361 0 265 12
pmappl 248 5943 0 5910 4 1 3 3 0 8 0
extentpl 40 56 0 38 1 0 1 1 0 8 0
phpool 112 1152 0 265 26 0 26 26 0 8 0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff827bd7c7) at panic+0x177 sys/kern/subr_prf.c:198
pool_do_get(ffffffff82c89eb0,9,ffff800023cf8ef8) at pool_do_get+0x474 sys/kern/subr_pool.c:739
pool_get(ffffffff82c89eb0,9) at pool_get+0xe9 sys/kern/subr_pool.c:582
fdcopy(ffff8000ffff9928) at fdcopy+0x44 fdinit sys/kern/kern_descrip.c:1067 [inline]
fdcopy(ffff8000ffff9928) at fdcopy+0x44 sys/kern/kern_descrip.c:1106
process_new(ffff800029588350,ffff8000ffff9928,1) at process_new+0x2bc sys/kern/kern_fork.c:255
fork1(ffff8000212142d8,1,ffffffff81cbbb00,0,ffff800023cf9140,0) at fork1+0x30b sys/kern/kern_fork.c:379
syscall(ffff800023cf91c0) at syscall+0x555 mi_syscall sys/sys/syscall_mi.h:113 [inline]
syscall(ffff800023cf91c0) at syscall+0x555 sys/arch/amd64/amd64/trap.c:626
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7fffff9620, count: -9
ddb{0}> machine ddbcpu 1
Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp
x86_ipi_db(ffff800020d68ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x7 sys/dev/kcov.c:144
syscall(ffff80002a9fde70) at syscall+0x53d mi_syscall sys/sys/syscall_mi.h:112 [inline]
syscall(ffff80002a9fde70) at syscall+0x53d sys/arch/amd64/amd64/trap.c:626
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7fffff0d80, count: 9
ddb{1}> trace
x86_ipi_db(ffff800020d68ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x7 sys/dev/kcov.c:144
syscall(ffff80002a9fde70) at syscall+0x53d mi_syscall sys/sys/syscall_mi.h:112 [inline]
syscall(ffff80002a9fde70) at syscall+0x53d sys/arch/amd64/amd64/trap.c:626
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7fffff0d80, count: -6