panic:p antcicp_:o uketrpunetl
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*151221 89214 32767 0x10 0x4000000 0 syz-executor.3
236939 91763 0 0x14000 0x200 1 reaper
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff8257b2ef) at panic+0x177 sys/kern/subr_prf.c:198
tcp_output(ffff800000d898b0) at tcp_output+0x2cd2 sys/netinet/tcp_output.c:727
tcp_send(fffffd807d16ed90,fffffd8079a89000,0,fffffd80781e9100) at tcp_send+0xc4 sys/netinet/tcp_usrreq.c:953
sosend(fffffd807d16ed90,0,ffff80002e4a4460,0,fffffd80781e9100,0) at sosend+0x62a pru_send sys/sys/protosw.h:331 [inline]
sosend(fffffd807d16ed90,0,ffff80002e4a4460,0,fffffd80781e9100,0) at sosend+0x62a sys/kern/uipc_socket.c:646
sendit(ffff8000247b3cf0,5,ffff80002e4a45e0,0,ffff80002e4a46d0) at sendit+0x65d sys/kern/uipc_syscalls.c:694
sys_sendmsg(ffff8000247b3cf0,ffff80002e4a4688,ffff80002e4a46d0) at sys_sendmsg+0x198 sys/kern/uipc_syscalls.c:601
syscall(ffff80002e4a4750) at syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline]
syscall(ffff80002e4a4750) at syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xb93ce5b2890, 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: tcp_output
cpu1: kernel diagnostic assertion "!_kernel_lock_held()" failed: file "/syzkaller/managers/setuid/kernel/sys/uvm/uvm_map.c", line 2486
ddb{0}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff8257b2ef) at panic+0x177 sys/kern/subr_prf.c:198
tcp_output(ffff800000d898b0) at tcp_output+0x2cd2 sys/netinet/tcp_output.c:727
tcp_send(fffffd807d16ed90,fffffd8079a89000,0,fffffd80781e9100) at tcp_send+0xc4 sys/netinet/tcp_usrreq.c:953
sosend(fffffd807d16ed90,0,ffff80002e4a4460,0,fffffd80781e9100,0) at sosend+0x62a pru_send sys/sys/protosw.h:331 [inline]
sosend(fffffd807d16ed90,0,ffff80002e4a4460,0,fffffd80781e9100,0) at sosend+0x62a sys/kern/uipc_socket.c:646
sendit(ffff8000247b3cf0,5,ffff80002e4a45e0,0,ffff80002e4a46d0) at sendit+0x65d sys/kern/uipc_syscalls.c:694
sys_sendmsg(ffff8000247b3cf0,ffff80002e4a4688,ffff80002e4a46d0) at sys_sendmsg+0x198 sys/kern/uipc_syscalls.c:601
syscall(ffff80002e4a4750) at syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline]
syscall(ffff80002e4a4750) at syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xb93ce5b2890, count: -9
ddb{0}> show registers
rdi 0
rsi 0x1
rbp 0xffff80002e4a40c0
rbx 0xffffffff829a1b8f cpu_info_full_primary+0x2b8f
rdx 0xffff800000be4940
rcx 0
rax 0xffff8000247b3cf0
r8 0x101010101010101
r9 0x8080808080808080
r10 0x9ac660af431bd637
r11 0x466cbee1bb0f7f48
r12 0xffffffff829a1990 cpu_info_full_primary+0x2990
r13 0
r14 0
r15 0x1
rip 0xffffffff81a16d08 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff80002e4a40b0
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb{0}> show proc
PROC (syz-executor.3) pid=151221 stat=onproc
flags process=10<SUGID> proc=4000000<THREAD>
pri=32, usrpri=82, nice=20
forw=0xffffffffffffffff, list=0xffff8000247b3270,0xffffffff82af9b68
process=0xffff8000ffff2dd0 user=0xffff80002e49f000, vmspace=0xfffffd8068b17188
estcpu=36, cpticks=0, pctcpu=0.0
user=0, sys=0, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
85949 309215 4388 32767 2 0x10 syz-executor.7
85949 235690 4388 32767 3 0x4000090 fsleep syz-executor.7
85949 504480 4388 32767 3 0x4000090 fsleep syz-executor.7
85949 475718 4388 32767 2 0x4000010 syz-executor.7
89214 403202 35324 32767 2 0x10 syz-executor.3
*89214 151221 35324 32767 7 0x4000010 syz-executor.3
31560 9368 59379 32767 3 0x90 nanoslp syz-executor.1
31560 266176 59379 32767 3 0x4000090 fsleep syz-executor.1
37428 392788 23100 32767 2 0x10 syz-executor.0
37428 180532 23100 32767 3 0x4000090 fsleep syz-executor.0
55656 88267 42718 32767 2 0x10 syz-executor.5
59379 238086 29803 32767 3 0x90 nanoslp syz-executor.1
29803 416806 83845 0 3 0x82 wait syz-executor.1
35324 234000 41914 32767 3 0x90 nanoslp syz-executor.3
41914 410635 83845 0 3 0x82 wait syz-executor.3
4388 23650 64867 32767 3 0x90 nanoslp syz-executor.7
64867 172953 83845 0 3 0x82 wait syz-executor.7
42718 37871 5664 32767 3 0x90 nanoslp syz-executor.5
5664 256041 83845 0 3 0x82 wait syz-executor.5
23100 217663 66705 32767 3 0x90 nanoslp syz-executor.0
66705 176463 83845 0 3 0x82 wait syz-executor.0
39343 156302 46509 32767 3 0x90 nanoslp syz-executor.4
46509 73675 83845 0 3 0x82 wait syz-executor.4
5077 94864 97009 32767 2 0x10 syz-executor.2
97009 268104 83845 0 3 0x82 wait syz-executor.2
96980 128966 0 0 3 0x14200 bored sosplice
24752 85361 45881 32767 3 0x90 nanoslp syz-executor.6
45881 419461 83845 0 3 0x82 wait syz-executor.6
83845 376445 8615 0 3 0x82 wait syz-fuzzer
83845 198180 8615 0 3 0x4000082 nanoslp syz-fuzzer
83845 493719 8615 0 3 0x4000082 thrsleep syz-fuzzer
83845 140810 8615 0 3 0x4000082 wait syz-fuzzer
83845 435522 8615 0 3 0x4000082 wait syz-fuzzer
83845 407232 8615 0 3 0x4000082 thrsleep syz-fuzzer
83845 410877 8615 0 3 0x4000082 wait syz-fuzzer
83845 368331 8615 0 3 0x4000082 thrsleep syz-fuzzer
83845 391023 8615 0 3 0x4000082 kqread syz-fuzzer
83845 62469 8615 0 3 0x4000082 thrsleep syz-fuzzer
83845 2132 8615 0 3 0x4000082 wait syz-fuzzer
83845 4287 8615 0 3 0x4000082 wait syz-fuzzer
83845 424368 8615 0 3 0x4000082 wait syz-fuzzer
83845 481586 8615 0 3 0x4000082 nanoslp syz-fuzzer
83845 235064 8615 0 3 0x4000082 wait syz-fuzzer
83845 26033 8615 0 3 0x4000082 thrsleep syz-fuzzer
8615 269715 86700 0 3 0x10008a sigsusp ksh
86700 137441 74256 0 3 0x9a kqread sshd
4329 357818 1 0 3 0x100083 ttyin getty
74256 170963 1 0 3 0x88 kqread sshd
33908 367195 51128 73 3 0x1100090 kqread syslogd
51128 453150 1 0 3 0x100082 netio syslogd
46742 234122 1 0 3 0x100080 kqread resolvd
44744 82319 36216 77 3 0x100092 kqread dhcpleased
12431 394672 36216 77 3 0x100092 kqread dhcpleased
36216 128017 1 0 3 0x80 kqread dhcpleased
57376 13789 0 0 3 0x14200 bored smr
47083 112512 0 0 2 0x14200 zerothread
25865 493879 0 0 3 0x14200 aiodoned aiodoned
98842 78030 0 0 3 0x14200 syncer update
23709 374088 0 0 3 0x14200 cleaner cleaner
91763 236939 0 0 7 0x14200 reaper
74889 419455 0 0 3 0x14200 pgdaemon pagedaemon
23511 90345 0 0 3 0x14200 bored viomb
82140 269008 0 0 3 0x40014200 acpi0 acpi0
90839 274797 0 0 3 0x40014200 idle1
47550 421617 0 0 3 0x14200 bored softnet
4344 273827 0 0 3 0x14200 bored softnet
77580 49018 0 0 3 0x14200 bored softnet
87908 239455 0 0 3 0x14200 bored softnet
13817 267634 0 0 3 0x14200 bored systqmp
24079 442665 0 0 3 0x14200 bored systq
575 151015 0 0 3 0x40014200 bored softclock
36195 403806 0 0 3 0x40014200 idle0
1 225308 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
CPU 1:
exclusive mutex &uvm.fpageqlock r = 0 (0xffffffff82add780)
#0 witness_lock+0x44d
#1 mtx_enter_try+0x100
#2 mtx_enter+0x4b sys/kern/kern_lock.c:266
#3 uvm_pmr_freepageq+0xcc sys/uvm/uvm_pmemrange.c:1333
#4 amap_wipeout+0x1ff sys/uvm/uvm_amap.c:523
#5 uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1351
#6 uvm_map_teardown+0x262 sys/uvm/uvm_map.c:2541
#7 uvmspace_free+0xa6 sys/uvm/uvm_map.c:3436
#8 reaper+0x19a sys/kern/kern_exit.c:448
#9 proc_trampoline+0x1c
Process 89214 (syz-executor.3) thread 0xffff8000247b3cf0 (151221)
exclusive rwlock netlock r = 0 (0xffffffff8291ebe0)
#0 witness_lock+0x44d
#1 sosend+0x500 sys/kern/uipc_socket.c:632
#2 sendit+0x65d sys/kern/uipc_syscalls.c:694
#3 sys_sendmsg+0x198 sys/kern/uipc_syscalls.c:601
#4 syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline]
#4 syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585
#5 Xsyscall+0x128
Process 5077 (syz-executor.2) thread 0xffff80002e48b7a8 (94864)
exclusive rrwlock inode r = 0 (0xfffffd806c5e8e70)
#0 witness_lock+0x44d
#1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2 rrw_enter+0x8b sys/kern/kern_rwlock.c:465
#3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:518
#4 ufs_ihashins+0x42 sys/ufs/ufs/ufs_ihash.c:140
#5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1353
#6 ffs_inode_alloc+0x1be sys/ufs/ffs/ffs_alloc.c:394
#7 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1150
#8 VOP_MKDIR+0xbf sys/kern/vfs_vops.c:388
#9 domkdirat+0x121 sys/kern/vfs_syscalls.c:3112
#10 syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline]
#10 syscall+0x435 sys/arch/amd64/amd64/trap.c:585
#11 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd806c0fc5f0)
#0 witness_lock+0x44d
#1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2 rrw_enter+0x8b sys/kern/kern_rwlock.c:465
#3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:518
#4 vn_lock+0x84 sys/kern/vfs_vnops.c:564
#5 vfs_lookup+0xd1 sys/kern/vfs_lookup.c:412
#6 namei+0x36a sys/kern/vfs_lookup.c:244
#7 domkdirat+0x75 sys/kern/vfs_syscalls.c:3097
#8 syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline]
#8 syscall+0x435 sys/arch/amd64/amd64/trap.c:585
#9 Xsyscall+0x128
Process 91763 (reaper) thread 0xffff800021232d28 (236939)
exclusive rwlock amaplk r = 0 (0xfffffd8078fcac50)
#0 witness_lock+0x44d
#1 amap_unref+0x2b sys/uvm/uvm_amap.c:1363
#2 uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1351
#3 uvm_map_teardown+0x262 sys/uvm/uvm_map.c:2541
#4 uvmspace_free+0xa6 sys/uvm/uvm_map.c:3436
#5 reaper+0x19a sys/kern/kern_exit.c:448
#6 proc_trampoline+0x1c
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10224 6414K 6419K 78643K 11439 0
pcb 13 16K 20K 78643K 19 0
rtable 242 6K 7K 78643K 3324 0
ifaddr 82 17K 17K 78643K 375 0
sysctl 3 1K 5K 78643K 7 0
counters 56 35K 35K 78643K 138 0
ioctlops 0 0K 2K 78643K 572 0
iov 0 0K 36K 78643K 4823 0
mount 1 1K 1K 78643K 1 0
log 0 0K 0K 78643K 4 0
vnodes 1271 79K 79K 78643K 8274 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 9K 78643K 317 0
VM map 2 1K 1K 78643K 2 0
sem 12 0K 0K 78643K 4602 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1697 195K 286K 78643K 12548 0
file desc 23 85K 121K 78643K 24654 0
sigio 0 0K 0K 78643K 925 0
proc 56 78K 115K 78643K 3534 0
subproc 104 6K 6K 78643K 637 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 2017 0
in_multi 99 6K 7K 78643K 813 0
ether_multi 1 0K 0K 78643K 85 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 325 1447K 1447K 78643K 325 0
exec 0 0K 2K 78643K 5485 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 62K 78643K 8 0
UVM amap 376 93K 108K 78643K 150658 0
UVM aobj 131 11K 11K 78643K 133 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 697 0
NDP 11 0K 2K 78643K 150 0
temp 124 4726K 4854K 78643K 63264 0
kqueue 13 20K 28K 78643K 2399 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 2890 0 2887 43 40 3 5 0 8 2
rtentry 112 583 0 469 4 0 4 4 0 8 0
unpcb 144 25244 0 25230 212 209 3 11 0 8 2
syncache 296 283 0 283 54 53 1 1 0 8 1
sackhl 24 1 0 1 1 1 0 1 0 8 0
tcpqe 32 96 0 96 29 28 1 1 0 8 1
tcpcb 768 29669 0 29649 636 625 11 29 0 8 7
arp 120 104 0 85 1 0 1 1 0 8 0
ipq 40 90 0 90 13 13 0 1 0 8 0
ipqe 40 277 0 277 13 13 0 1 0 8 0
inpcb 368 38679 0 38664 446 436 10 25 0 8 8
ip6q 72 1 0 1 1 1 0 1 0 8 0
ip6af 40 1 0 1 1 1 0 1 0 8 0
nd6 48 164 0 137 1 0 1 1 0 8 0
kcovpl 48 49 0 41 1 0 1 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 2325 0 1858 32 2 30 30 0 8 0
art_table 32 2326 0 1858 4 0 4 4 0 8 0
art_node 16 582 0 478 1 0 1 1 0 8 0
sysvmsgpl 40 13 0 10 2 1 1 1 0 8 0
semupl 112 4 0 4 1 1 0 1 0 8 0
semapl 112 4600 0 4590 1 0 1 1 0 8 0
shmpl 112 130 0 2 4 0 4 4 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 36735 0 35263 93 0 93 93 0 8 0
ffsino 272 36735 0 35263 99 0 99 99 0 8 0
nchpl 144 70188 0 68547 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 248641 0 248640 7 6 1 2 0 8 0
percpumem 16 81 0 41 1 0 1 1 0 8 0
kstatmem 264 104 0 82 2 0 2 2 0 8 0
scxspl 216 220718 0 220718 61 60 1 8 0 8 1
plimitpl 152 6231 0 6208 25 24 1 2 0 8 0
sigapl 424 24851 0 24797 7 0 7 7 0 8 0
futexpl 64 222836 0 222832 13 12 1 1 0 8 0
knotepl 120 1523 0 0 19 2 17 17 0 8 0
kqueuepl 216 8094 0 8085 151 150 1 10 0 8 0
pipepl 320 5723 0 5694 135 132 3 9 0 8 0
fdescpl 496 24833 0 24799 7 2 5 6 0 8 0
filepl 152 197827 0 197579 329 314 15 24 0 8 5
lockfpl 104 3501 0 3499 7 6 1 2 0 8 0
lockfspl 48 918 0 916 1 0 1 1 0 8 0
sessionpl 144 64 0 48 1 0 1 1 0 8 0
pgrppl 48 444 0 428 1 0 1 1 0 8 0
ucredpl 104 37075 0 37057 1 0 1 1 0 8 0
zombiepl 144 24799 0 24797 1 0 1 1 0 8 0
processpl 1064 24851 0 24797 5 1 4 5 0 8 0
procpl 672 73007 0 72931 45 37 8 9 0 8 0
sosppl 168 410 0 410 39 38 1 1 0 8 1
sockpl 488 67501 0 67471 1318 1305 13 51 0 8 8
mcl64k 65536 73 0 0 8 5 3 8 0 8 0
mcl16k 16384 25 0 0 3 0 3 3 0 8 0
mcl12k 12288 49 0 0 2 0 2 2 0 8 0
mcl9k 9216 20 0 0 2 0 2 2 0 8 0
mcl8k 8192 57 0 0 6 3 3 3 0 8 0
mcl4k 4096 81 0 0 4 1 3 4 0 8 0
mcl2k2 2112 25 0 0 2 0 2 2 0 8 0
mcl2k 2048 626 0 0 45 28 17 45 0 8 0
mtagpl 96 5 0 0 1 0 1 1 0 8 0
mbufpl 256 8078 0 0 430 1 429 429 0 8 0
bufpl 288 42517 0 36184 453 0 453 453 0 8 0
anonpl 24 8311998 0 8298344 531 399 132 157 0 186 3
amapchunkpl 152 490993 0 490325 281 251 30 50 0 158 1
amappl16 200 264049 0 263665 1169 1136 33 60 0 8 8
amappl15 192 660 0 651 1 0 1 1 0 8 0
amappl14 184 999 0 995 1 0 1 1 0 8 0
amappl13 176 4449 0 4446 1 0 1 1 0 8 0
amappl12 168 3447 0 3438 1 0 1 1 0 8 0
amappl11 160 5669 0 5648 1 0 1 1 0 8 0
amappl10 152 4312 0 4305 2 1 1 1 0 8 0
amappl9 144 4087 0 4085 1 0 1 1 0 8 0
amappl8 136 3925 0 3755 7 0 7 7 0 8 1
amappl7 128 2474 0 2453 1 0 1 1 0 8 0
amappl6 120 4187 0 4165 2 1 1 2 0 8 0
amappl5 112 20344 0 20327 1 0 1 1 0 8 0
amappl4 104 11457 0 11413 2 0 2 2 0 8 0
amappl3 96 81018 0 80948 5 2 3 3 0 8 1
amappl2 88 9509 0 9455 5 3 2 2 0 8 0
amappl1 80 622638 0 621895 20 3 17 19 0 8 0
amappl 88 148244 0 148046 8 2 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 72 132 0 2 3 0 3 3 0 8 0
uaddrrnd 24 24833 0 24798 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 24833 0 24798 1 0 1 1 0 8 0
vmmpekpl 168 203712 0 203659 3 0 3 3 0 8 0
vmmpepl 168 2655479 0 2652573 726 574 152 165 0 357 15
vmsppl 368 24832 0 24798 4 0 4 4 0 8 0
rwobjpl 56 802716 0 795146 155 41 114 118 0 8 0
pdppl 4096 49673 0 49596 698 617 81 93 0 8 4
pvpl 32 13138692 0 13119397 1093 872 221 257 0 265 14
pmappl 248 24832 0 24798 4 1 3 3 0 8 0
extentpl 40 56 0 38 1 0 1 1 0 8 0
phpool 112 2335 0 1101 36 0 36 36 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(ffffffff8257b2ef) at panic+0x177 sys/kern/subr_prf.c:198
tcp_output(ffff800000d898b0) at tcp_output+0x2cd2 sys/netinet/tcp_output.c:727
tcp_send(fffffd807d16ed90,fffffd8079a89000,0,fffffd80781e9100) at tcp_send+0xc4 sys/netinet/tcp_usrreq.c:953
sosend(fffffd807d16ed90,0,ffff80002e4a4460,0,fffffd80781e9100,0) at sosend+0x62a pru_send sys/sys/protosw.h:331 [inline]
sosend(fffffd807d16ed90,0,ffff80002e4a4460,0,fffffd80781e9100,0) at sosend+0x62a sys/kern/uipc_socket.c:646
sendit(ffff8000247b3cf0,5,ffff80002e4a45e0,0,ffff80002e4a46d0) at sendit+0x65d sys/kern/uipc_syscalls.c:694
sys_sendmsg(ffff8000247b3cf0,ffff80002e4a4688,ffff80002e4a46d0) at sys_sendmsg+0x198 sys/kern/uipc_syscalls.c:601
syscall(ffff80002e4a4750) at syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline]
syscall(ffff80002e4a4750) at syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xb93ce5b2890, count: -9
ddb{0}> machine ddbcpu 1
Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp
x86_ipi_db(ffff800020dd8ff0) 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
x86_bus_space_io_read_1(3f8,5) at x86_bus_space_io_read_1+0x28 sys/arch/amd64/amd64/bus_space.c:651
comcnputc(800,64) at comcnputc+0x97 sys/dev/ic/com.c:1259
cnputc(64) at cnputc+0x4b sys/dev/cons.c:218
db_putchar(64) at db_putchar+0x3fc sys/ddb/db_output.c:155
kprintf() at kprintf+0x20ec sys/kern/subr_prf.c:1064
db_printf(ffffffff8261b4d8) at db_printf+0x85 sys/kern/subr_prf.c:498
panic(ffffffff825a14be) at panic+0xd7 sys/kern/subr_prf.c:216
__assert(ffffffff82619d34,ffffffff826406ea,9b6,ffffffff825d59fb) at __assert+0x25 sys/kern/subr_prf.c:157
uvm_map_teardown(fffffd806ff73a20) at uvm_map_teardown+0x2e8 sys/uvm/uvm_map.c:2488
uvmspace_free(fffffd806ff73a20) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3436
reaper(ffff800021232d28) at reaper+0x19a sys/kern/kern_exit.c:448
end trace frame: 0x0, count: 1
ddb{1}> trace
x86_ipi_db(ffff800020dd8ff0) 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
x86_bus_space_io_read_1(3f8,5) at x86_bus_space_io_read_1+0x28 sys/arch/amd64/amd64/bus_space.c:651
comcnputc(800,64) at comcnputc+0x97 sys/dev/ic/com.c:1259
cnputc(64) at cnputc+0x4b sys/dev/cons.c:218
db_putchar(64) at db_putchar+0x3fc sys/ddb/db_output.c:155
kprintf() at kprintf+0x20ec sys/kern/subr_prf.c:1064
db_printf(ffffffff8261b4d8) at db_printf+0x85 sys/kern/subr_prf.c:498
panic(ffffffff825a14be) at panic+0xd7 sys/kern/subr_prf.c:216
__assert(ffffffff82619d34,ffffffff826406ea,9b6,ffffffff825d59fb) at __assert+0x25 sys/kern/subr_prf.c:157
uvm_map_teardown(fffffd806ff73a20) at uvm_map_teardown+0x2e8 sys/uvm/uvm_map.c:2488
uvmspace_free(fffffd806ff73a20) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3436
reaper(ffff800021232d28) at reaper+0x19a sys/kern/kern_exit.c:448
end trace frame: 0x0, count: -14