panic: mutex 0xfffffd806c15f9f0 not held in mtx_leave
Stopped at db_enter+0x25: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
522856 60400 32767 0x10 0 1 syz-executor
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff83078e14) at panic+0x1e5 sys/kern/subr_prf.c:198
mtx_leave(fffffd806c15f9f0) at mtx_leave+0x17c sys/kern/kern_lock.c:335
msleep(fffffd806c15f908,fffffd806c15f9f0,4,ffffffff832a21d0,0) at msleep+0x125 sys/kern/kern_synch.c:249
vm_map_lock_ln(fffffd806c15f8d8,eecbf89d000,0) at vm_map_lock_ln+0xd4 sys/uvm/uvm_map.c:5250
uvm_map_protect(fffffd806c15f8d8,eecbf69e000,eecbf89d000,1,0,0,42a6187d16ee729d) at uvm_map_protect+0xe1 sys/uvm/uvm_map.c:3059
sys_mprotect(ffff80002a04f6f8,ffff80002a0b1fb0,ffff80002a0b1f00) at sys_mprotect+0x34c sys/uvm/uvm_mmap.c:585
syscall(ffff80002a0b1fb0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff80002a0b1fb0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7e88893cd0, 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: mutex 0xfffffd806c15f9f0 not held in mtx_leave
ddb{0}> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff83078e14) at panic+0x1e5 sys/kern/subr_prf.c:198
mtx_leave(fffffd806c15f9f0) at mtx_leave+0x17c sys/kern/kern_lock.c:335
msleep(fffffd806c15f908,fffffd806c15f9f0,4,ffffffff832a21d0,0) at msleep+0x125 sys/kern/kern_synch.c:249
vm_map_lock_ln(fffffd806c15f8d8,eecbf89d000,0) at vm_map_lock_ln+0xd4 sys/uvm/uvm_map.c:5250
uvm_map_protect(fffffd806c15f8d8,eecbf69e000,eecbf89d000,1,0,0,42a6187d16ee729d) at uvm_map_protect+0xe1 sys/uvm/uvm_map.c:3059
sys_mprotect(ffff80002a04f6f8,ffff80002a0b1fb0,ffff80002a0b1f00) at sys_mprotect+0x34c sys/uvm/uvm_mmap.c:585
syscall(ffff80002a0b1fb0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff80002a0b1fb0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7e88893cd0, count: -9
ddb{0}> show registers
rdi 0
rsi 0x1
rbp 0xffff80002a0b1bb0
rbx 0xffffffff834aedbf cpu_info_full_primary+0x2dbf
rdx 0
rcx 0xffff80002a04f6f8
rax 0xffffffff834adff0 cpu_info_full_primary+0x1ff0
r8 0x101010101010101
r9 0x8080808080808080
r10 0xc8b97c0c6d71e27a
r11 0x6760bb86d06818ee
r12 0xffffffff834aebc0 cpu_info_full_primary+0x2bc0
r13 0
r14 0
r15 0x1
rip 0xffffffff816a99e5 db_enter+0x25
cs 0x8
rflags 0x246
rsp 0xffff80002a0b1ba0
ss 0x10
db_enter+0x25: addq $0x8,%rsp
ddb{0}> show proc
PROC (syz-executor) tid=291538 pid=67508 tcnt=3 stat=sleep
flags process=10<SUGID> proc=20<WSLEEP>
runpri=32, usrpri=50, slppri=4, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff8000ffffd6d8,0xffff80002a04ef70
process=0xffff80002a391b30 user=0xffff80002a0ad000, vmspace=0xfffffd806c15f8d8
estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
57923 81279 14696 0 2 0x40 syz-executor
*67508 291538 74662 32767 3 0x30 syz-executor
67508 128188 74662 32767 3 0x4000090 fsleep syz-executor
67508 284190 74662 32767 3 0x4000090 fsleep syz-executor
60400 522856 81391 32767 7 0x10 syz-executor
60400 484609 81391 32767 3 0x4000090 netacc syz-executor
14696 375511 71780 0 3 0x80 ppwait syz-executor
71780 496230 21140 0 3 0x82 wait syz-executor
8200 448929 64672 32767 3 0x90 nanoslp syz-executor
8200 366191 64672 32767 3 0x4000090 sbwait syz-executor
8200 70675 64672 32767 3 0x4000090 fsleep syz-executor
63058 368581 67017 32767 3 0x90 nanoslp syz-executor
63058 108982 67017 32767 3 0x4000090 pipewr syz-executor
63058 506725 67017 32767 3 0x4000090 fsleep syz-executor
9968 369259 10473 32767 3 0x90 nanoslp syz-executor
9968 23668 10473 32767 3 0x4000090 nanoslp syz-executor
9968 249359 10473 32767 3 0x4000090 fsleep syz-executor
23507 425228 86891 32767 3 0x90 nanoslp syz-executor
23507 507117 86891 32767 3 0x4000090 kqread syz-executor
23507 479950 86891 32767 3 0x4000090 fsleep syz-executor
64672 453775 85336 32767 3 0x90 nanoslp syz-executor
74662 11310 20385 32767 3 0x90 nanoslp syz-executor
49162 457952 79003 32767 3 0x90 nanoslp syz-executor
67017 172841 92549 32767 3 0x90 nanoslp syz-executor
86891 242363 37961 32767 3 0x90 nanoslp syz-executor
81391 38733 78058 32767 3 0x90 nanoslp syz-executor
10473 11777 93012 32767 3 0x90 nanoslp syz-executor
78058 79826 21140 0 3 0x82 wait syz-executor
79003 132341 21140 0 3 0x82 wait syz-executor
37961 522905 21140 0 3 0x82 wait syz-executor
20385 432455 21140 0 3 0x82 wait syz-executor
92549 216432 21140 0 3 0x82 wait syz-executor
85336 17821 21140 0 3 0x82 wait syz-executor
93012 217593 21140 0 3 0x82 wait syz-executor
3909 46823 0 0 3 0x14200 bored sosplice
21140 409607 68356 0 3 0x82 kqread syz-executor
68356 485696 41060 0 3 0x10008a sigsusp ksh
41060 435095 61474 0 3 0x98 kqread sshd-session
61474 160195 38445 0 3 0x92 kqread sshd-session
83897 179207 1 0 3 0x100083 ttyin getty
38445 168572 1 0 3 0x88 kqread sshd
35231 344362 70060 73 3 0x1100010 biowait syslogd
70060 62793 1 0 3 0x100082 sbwait syslogd
2765 288476 1 0 3 0x100080 kqread resolvd
16797 72617 5498 77 3 0x100092 kqread dhcpleased
42317 309257 5498 77 3 0x100092 kqread dhcpleased
5498 509372 1 0 3 0x80 kqread dhcpleased
60921 102918 0 0 3 0x14200 bored smr
48353 134088 0 0 2 0x14200 zerothread
36784 179501 0 0 3 0x14200 aiodoned aiodoned
27264 464896 0 0 3 0x14200 syncer update
16457 391301 0 0 3 0x14200 cleaner cleaner
58693 405227 0 0 3 0x14200 reaper reaper
46286 424052 0 0 3 0x14200 pgdaemon pagedaemon
69768 488903 0 0 3 0x14200 bored viomb
65194 123912 0 0 3 0x40014200 acpi0 acpi0
80217 69912 0 0 3 0x40014200 idle1
93711 264344 0 0 3 0x14200 bored softnet3
14674 184317 0 0 3 0x14200 bored softnet2
36944 487591 0 0 3 0x14200 bored softnet1
17810 86772 0 0 3 0x14200 bored softnet0
16948 493178 0 0 3 0x14200 bored systqmp
85825 88495 0 0 3 0x14200 bored systq
37616 123800 0 0 3 0x14200 tmoslp softclockmp
51297 66885 0 0 3 0x40014200 tmoslp softclock
13077 260605 0 0 3 0x40014200 idle0
1 439454 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
CPU 0:
exclusive mutex &map->flags_lock r = 0 (0xfffffd806c15fa30)
#0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5bb sys/kern/subr_witness.c:1155
#1 mtx_enter_try+0x178
#2 mtx_enter+0x60 sys/kern/kern_lock.c:239
#3 vm_map_lock_ln+0x153 sys/uvm/uvm_map.c:5258
#4 uvm_map_protect+0xe1 sys/uvm/uvm_map.c:3059
#5 sys_mprotect+0x34c sys/uvm/uvm_mmap.c:585
#6 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline]
#6 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
#7 Xsyscall+0x128
Process 67508 (syz-executor) thread 0xffff8000ffffccb8 (284190)
exclusive rrwlock inode r = 0 (0xfffffd806c4d11a8)
#0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5bb sys/kern/subr_witness.c:1155
#1 rw_enter+0x41b sys/kern/kern_rwlock.c:309
#2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464
#3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524
#4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564
#5 uvn_io+0x412 sys/uvm/uvm_vnode.c:1265
#6 uvn_put+0x125 sys/uvm/uvm_vnode.c:928
#7 uvm_pager_put+0x18e sys/uvm/uvm_pager.c:525
#8 uvn_flush+0x72a sys/uvm/uvm_vnode.c:727
#9 uvm_map_clean+0x87e sys/uvm/uvm_map.c:4578
#10 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
#10 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
#11 Xsyscall+0x128
exclusive kernel_lock &kernel_lock r = 1 (0xffffffff835a2200)
#0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5bb sys/kern/subr_witness.c:1155
#1 syscall+0xad6 mi_syscall sys/sys/syscall_mi.h:179 [inline]
#1 syscall+0xad6 sys/arch/amd64/amd64/trap.c:577
#2 Xsyscall+0x128
Process 8200 (syz-executor) thread 0xffff80002a04fc08 (366191)
exclusive rwlock sbufrcv r = 0 (0xffff8000012f8b50)
#0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5bb sys/kern/subr_witness.c:1155
#1 rw_enter+0x41b sys/kern/kern_rwlock.c:309
#2 sblock+0xb7 sys/kern/uipc_socket2.c:549
#3 soreceive+0x295 sys/kern/uipc_socket.c:947
#4 recvit+0x40a sys/kern/uipc_syscalls.c:1082
#5 sys_recvmmsg+0x3d3 sys/kern/uipc_syscalls.c:973
#6 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline]
#6 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
#7 Xsyscall+0x128
Process 35231 (syslogd) thread 0xffff8000ffffdbe8 (344362)
exclusive rrwlock inode r = 0 (0xfffffd806e6fbd60)
#0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5bb sys/kern/subr_witness.c:1155
#1 rw_enter+0x41b sys/kern/kern_rwlock.c:309
#2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464
#3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524
#4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564
#5 sys_fsync+0x152 sys/kern/vfs_syscalls.c:2926
#6 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
#6 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
#7 Xsyscall+0x128
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10184 11047K 11059K 166960K 11289 0
pcb 17 12K 12K 166960K 17 0
rtable 232 6K 6K 166960K 613 0
pf 31 16K 16K 166960K 49 0
ifaddr 42 7K 7K 166960K 82 0
ifgroup 50 2K 2K 166960K 86 0
sysctl 2 0K 0K 166960K 2 0
counters 64 36K 36K 166960K 82 0
ioctlops 0 0K 2K 166960K 38 0
iov 1 4K 4K 166960K 3 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1468 92K 92K 166960K 1501 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 5K 166960K 5 0
VM map 2 1K 1K 166960K 2 0
sem 2 0K 0K 166960K 2 0
dirhash 12 2K 2K 166960K 15 0
ACPI 1690 195K 286K 166960K 12468 0
file desc 26 97K 157K 166960K 350 0
sigio 2 0K 0K 166960K 2 0
proc 65 91K 176K 166960K 740 0
subproc 104 6K 13K 166960K 221 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 1 0K 0K 166960K 10 0
in_multi 99 7K 7K 166960K 202 0
ether_multi 1 0K 0K 166960K 3 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 73 334K 334K 166960K 73 0
exec 0 0K 1K 166960K 484 0
tdb 3 0K 0K 166960K 3 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 258 74K 130K 166960K 3964 0
UVM aobj 5 2K 2K 166960K 6 0
pinsyscall 47 94K 126K 166960K 1567 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 2 0K 0K 166960K 7 0
NDP 13 0K 2K 166960K 54 0
temp 38 6810K 6938K 166960K 5005 0
kqueue 15 24K 28K 166960K 34 0
SYN cache 2 16K 16K 166960K 2 0
ddb{0}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
plcache 128 24 0 0 1 0 1 1 0 8 0
rtpcb 120 55 0 52 1 0 1 1 0 8 0
rtentry 112 210 0 101 4 0 4 4 0 8 0
unpcb 144 73 0 52 1 0 1 1 0 8 0
syncache 336 5 0 5 2 1 1 1 0 8 1
tcpqe 32 2 0 2 1 0 1 1 0 8 1
tcpcb 808 85 0 77 5 0 5 5 0 8 3
arp 120 36 0 18 1 0 1 1 0 8 0
ipq 40 1 0 1 1 0 1 1 0 8 1
ipqe 40 44 0 44 1 0 1 1 0 8 1
inpcb 336 250 0 235 7 0 7 7 0 8 5
nd6 136 51 0 28 1 0 1 1 0 8 0
kcovpl 48 17 0 9 1 0 1 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 862 0 407 31 2 29 29 0 8 0
art_table 32 863 0 407 4 0 4 4 0 8 0
art_node 16 209 0 110 1 0 1 1 0 8 0
sysvmsgpl 40 2 0 2 1 1 0 1 0 8 0
shmpl 112 3 0 1 1 0 1 1 0 8 0
dirhash 1024 19 0 2 3 0 3 3 0 8 0
dino2pl 256 1663 0 141 96 0 96 96 0 8 0
ffsino 272 1663 0 141 102 0 102 102 0 8 0
nchpl 144 1932 0 242 63 0 63 63 0 8 0
uvmvnodes 80 1893 0 0 39 0 39 39 0 8 0
vnodes 216 1893 0 0 106 0 106 106 0 8 0
namei 1024 6706 0 6706 3 1 2 2 0 8 2
percpumem 16 55 0 9 1 0 1 1 0 8 0
kstatmem 264 40 0 18 2 0 2 2 0 8 0
scxspl 216 8576 0 8575 5 2 3 3 1 8 2
plimitpl 152 136 0 108 2 0 2 2 0 8 0
sigapl 424 604 0 547 10 1 9 9 0 8 1
futexpl 64 1164 0 1158 2 1 1 1 0 8 0
knotepl 120 305 0 0 10 0 10 10 0 8 0
kqueuepl 216 36 0 25 1 0 1 1 0 8 0
pipepl 320 135 0 106 4 0 4 4 0 8 1
fdescpl 496 585 0 547 8 1 7 7 0 8 0
filepl 152 2081 0 1817 14 0 14 14 0 8 3
lockfpl 104 26 0 23 1 0 1 1 0 8 0
lockfspl 48 14 0 11 1 0 1 1 0 8 0
sessionpl 144 31 0 15 1 0 1 1 0 8 0
pgrppl 48 49 0 25 1 0 1 1 0 8 0
ucredpl 104 189 0 171 1 0 1 1 0 8 0
zombiepl 144 548 0 547 1 0 1 1 0 8 0
processpl 1160 604 0 547 6 0 6 6 0 8 1
procpl 648 720 0 652 7 0 7 7 0 8 1
sosppl 168 2 0 2 2 1 1 1 0 8 1
sockpl 664 378 0 338 10 1 9 9 0 8 5
mcl64k 65536 3 0 0 1 0 1 1 0 8 0
mcl16k 16384 1 0 0 1 0 1 1 0 8 0
mcl12k 12288 1 0 0 1 0 1 1 0 8 0
mcl8k 8192 4 0 0 1 0 1 1 0 8 0
mcl4k 4096 147 0 0 19 0 19 19 0 8 0
mcl2k 2048 20 0 0 3 0 3 3 0 8 0
mtagpl 96 3 0 0 1 0 1 1 0 8 0
mbufpl 256 284 0 0 18 0 18 18 0 8 0
bufpl 280 4973 0 95 349 0 349 349 0 8 0
anonpl 24 159857 0 156418 51 0 51 51 0 185 27
amapchunkpl 152 12792 0 12211 35 0 35 35 0 158 11
amappl16 200 3990 0 3976 5 3 2 5 0 8 0
amappl15 192 11 0 11 2 2 0 1 0 8 0
amappl14 184 121 0 111 1 0 1 1 0 8 0
amappl13 176 9 0 9 1 1 0 1 0 8 0
amappl12 168 1328 0 1292 3 0 3 3 0 8 0
amappl11 160 53 0 43 1 0 1 1 0 8 0
amappl10 152 10 0 10 1 1 0 1 0 8 0
amappl9 144 138 0 138 1 1 0 1 0 8 0
amappl8 136 18 0 17 1 0 1 1 0 8 0
amappl7 128 113 0 102 1 0 1 1 0 8 0
amappl6 120 250 0 249 1 0 1 1 0 8 0
amappl5 112 174 0 166 1 0 1 1 0 8 0
amappl4 104 299 0 285 1 0 1 1 0 8 0
amappl3 96 2383 0 2250 4 0 4 4 0 8 0
amappl2 88 762 0 700 2 0 2 2 0 8 0
amappl1 80 8483 0 7944 13 0 13 13 0 8 0
amappl 88 3561 0 3358 5 0 5 5 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 5 0 1 1 0 1 1 0 8 0
uaddrrnd 24 585 0 547 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 585 0 547 1 0 1 1 0 8 0
vmmpekpl 168 6016 0 5961 5 0 5 5 0 8 0
vmmpepl 168 43972 0 41943 95 0 95 95 0 357 4
vmsppl 448 584 0 547 6 0 6 6 0 8 1
rwobjpl 56 18614 0 15869 41 0 41 41 0 8 1
pdppl 4096 1177 0 1094 141 54 87 113 0 8 4
pvpl 32 28162 0 0 229 1 228 228 0 265 0
pmappl 248 584 0 547 5 1 4 4 0 8 0
extentpl 40 55 0 38 1 0 1 1 0 8 0
phpool 112 443 0 60 12 0 12 12 0 8 0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff83078e14) at panic+0x1e5 sys/kern/subr_prf.c:198
mtx_leave(fffffd806c15f9f0) at mtx_leave+0x17c sys/kern/kern_lock.c:335
msleep(fffffd806c15f908,fffffd806c15f9f0,4,ffffffff832a21d0,0) at msleep+0x125 sys/kern/kern_synch.c:249
vm_map_lock_ln(fffffd806c15f8d8,eecbf89d000,0) at vm_map_lock_ln+0xd4 sys/uvm/uvm_map.c:5250
uvm_map_protect(fffffd806c15f8d8,eecbf69e000,eecbf89d000,1,0,0,42a6187d16ee729d) at uvm_map_protect+0xe1 sys/uvm/uvm_map.c:3059
sys_mprotect(ffff80002a04f6f8,ffff80002a0b1fb0,ffff80002a0b1f00) at sys_mprotect+0x34c sys/uvm/uvm_mmap.c:585
syscall(ffff80002a0b1fb0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff80002a0b1fb0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7e88893cd0, count: -9
ddb{0}> machine ddbcpu 1
Stopped at x86_ipi_db+0x27: addq $0x8,%rsp
x86_ipi_db(ffff800029b7bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27
end of kernel
end trace frame: 0x784b580022f0, count: 12
ddb{1}> trace
x86_ipi_db(ffff800029b7bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27
end of kernel
end trace frame: 0x784b580022f0, count: -3