panic: missing alias
Stopped at db_enter+0x25: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*486379 57321 0 0x2 0 0 syz-executor
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff83418b05) at panic+0x1cf sys/kern/subr_prf.c:198
vgonel(fffff5006d40aa70,ffff80002a76c540) at vgonel+0x663
vrecycle(fffff5006d40aa70,ffff80002a76c540) at vrecycle+0x7c sys/kern/vfs_subr.c:1136
ufs_inactive(ffff80002a7d2da0) at ufs_inactive+0x359 sys/ufs/ufs/ufs_inode.c:107
VOP_INACTIVE(fffff5006d40aa70,ffff80002a76c540) at VOP_INACTIVE+0xfb sys/kern/vfs_vops.c:498
vput(fffff5006d40aa70) at vput+0xdc sys/kern/vfs_subr.c:789
VOP_REMOVE(fffff5006d40b480,fffff5006d40aa70,ffff80002a7d2f08) at VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336
dounlinkat(ffff80002a76c540,ffffff9c,7c8aa1862bc0,0) at dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1842
syscall(ffff80002a7d3070) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80002a7d3070) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7c8aa1863070, count: 4
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
*cpu0: missing alias
ddb> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff83418b05) at panic+0x1cf sys/kern/subr_prf.c:198
vgonel(fffff5006d40aa70,ffff80002a76c540) at vgonel+0x663
vrecycle(fffff5006d40aa70,ffff80002a76c540) at vrecycle+0x7c sys/kern/vfs_subr.c:1136
ufs_inactive(ffff80002a7d2da0) at ufs_inactive+0x359 sys/ufs/ufs/ufs_inode.c:107
VOP_INACTIVE(fffff5006d40aa70,ffff80002a76c540) at VOP_INACTIVE+0xfb sys/kern/vfs_vops.c:498
vput(fffff5006d40aa70) at vput+0xdc sys/kern/vfs_subr.c:789
VOP_REMOVE(fffff5006d40b480,fffff5006d40aa70,ffff80002a7d2f08) at VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336
dounlinkat(ffff80002a76c540,ffffff9c,7c8aa1862bc0,0) at dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1842
syscall(ffff80002a7d3070) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80002a7d3070) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7c8aa1863070, count: -11
ddb> show registers
rdi 0
rsi 0x1
rbp 0xffff80002a7d2be0
rbx 0xfffff5006d40aa70
rdx 0
rcx 0
rax 0xffff80002a76c540
r8 0x101010101010101
r9 0x8080808080808080
r10 0xc1fecd945d96ef08
r11 0x62063b5b9fa33e3f
r12 0
r13 0x4
r14 0
r15 0x1
rip 0xffffffff8169c655 db_enter+0x25
cs 0x8
rflags 0x246
rsp 0xffff80002a7d2bd0
ss 0
db_enter+0x25: addq $0x8,%rsp
ddb> show proc
PROC (syz-executor) tid=486379 pid=57321 tcnt=1 stat=onproc
flags process=2<EXEC> proc=0
runpri=17, usrpri=50, slppri=17, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff80002a76c2a8,0xffff80002a76dca8
process=0xffff80002a78c490 user=0xffff80002a7ce000, vmspace=0xfffff5007ec62cf0
estcpu=36, cpticks=5, pctcpu=0.0, user=1, sys=3, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
20342 2396 96913 0 2 0 syz-executor
20342 226442 96913 0 3 0x4000080 fsleep syz-executor
64345 304741 70817 0 2 0x2 ndp
70817 481502 39235 0 3 0x10008a sigsusp sh
39235 313908 91759 0 3 0x82 wait syz-executor
96913 289057 91759 0 3 0x82 nanoslp syz-executor
8286 311354 91759 0 3 0x82 wait syz-executor
97161 407174 91759 0 2 0x2 syz-executor
96014 230127 91759 0 2 0x2 syz-executor
76702 293557 91759 0 2 0x2 syz-executor
86818 175561 91759 0 2 0x2 syz-executor
*57321 486379 91759 0 7 0x2 syz-executor
91759 38446 48097 0 3 0x82 kqread syz-executor
48097 176106 15323 0 3 0x10008a sigsusp ksh
15323 291016 42469 0 3 0x98 kqread sshd-session
42469 107415 34665 0 3 0x92 kqread sshd-session
7924 13485 1 0 3 0x100083 ttyin getty
34665 114275 1 0 3 0x88 kqread sshd
61766 433928 2001 73 3 0x1100090 kqread syslogd
2001 18849 1 0 3 0x100082 sbwait syslogd
34940 443988 1 0 3 0x100080 kqread resolvd
45319 314311 47912 77 3 0x100092 kqread dhcpleased
23701 441538 47912 77 3 0x100092 kqread dhcpleased
47912 258570 1 0 3 0x80 kqread dhcpleased
31736 332386 0 0 3 0x14200 bored smr
17736 113974 0 0 2 0x14200 zerothread
45121 397023 0 0 3 0x14200 aiodoned aiodoned
91587 285246 0 0 3 0x14200 syncer update
67137 177369 0 0 3 0x14200 cleaner cleaner
96450 60526 0 0 3 0x14200 reaper reaper
89217 169919 0 0 3 0x14200 pgdaemon pagedaemon
97014 51161 0 0 3 0x14200 bored viomb
80797 64534 0 0 3 0x40014200 acpi0 acpi0
97453 230960 0 0 3 0x14200 bored softnet0
88563 409912 0 0 3 0x14200 smrbar systqmp
8493 522645 0 0 3 0x14200 bored systq
48765 296911 0 0 3 0x40014200 tmoslp softclock
52977 50565 0 0 3 0x40014200 idle0
1 406827 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 11053 12372K 12533K 166960K 12505 0
pcb 17 12K 12K 166960K 63 0
rtable 245 10K 10K 166960K 549 0
pf 35 14K 17K 166960K 64 0
ifaddr 38 6K 7K 166960K 60 0
ifgroup 46 2K 2K 166960K 66 0
sysctl 3 1K 9K 166960K 10 0
counters 32 17K 18K 166960K 42 0
ioctlops 0 0K 4K 166960K 88 0
iov 0 0K 16K 166960K 14 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1366 86K 86K 166960K 1657 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 9K 166960K 4 0
VM map 2 1K 1K 166960K 2 0
sem 11 0K 0K 166960K 12 0
dirhash 12 2K 2K 166960K 12 0
ACPI 1692 195K 286K 166960K 12470 0
file desc 14 49K 93K 166960K 396 0
sigio 0 0K 0K 166960K 9 0
proc 61 59K 116K 166960K 566 0
subproc 72 4K 4K 166960K 90 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 24 0
in_multi 88 6K 7K 166960K 135 0
ether_multi 1 0K 0K 166960K 1 0
mrt 1 0K 0K 166960K 11 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 79 360K 360K 166960K 79 0
exec 0 0K 1K 166960K 407 0
fusefs mount 1 32K 32K 166960K 1 0
tdb 3 0K 0K 166960K 3 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 179 150K 166K 166960K 5136 0
UVM aobj 7 2K 2K 166960K 8 0
pinsyscall 35 70K 94K 166960K 1557 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 0K 166960K 9 0
NDP 12 0K 2K 166960K 39 0
temp 42 9104K 9166K 166960K 9669 0
kqueue 13 20K 28K 166960K 61 0
SYN cache 2 16K 16K 166960K 2 0
ddb> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
rtpcb 120 56 0 53 1 0 1 1 0 8 0
rtentry 136 147 0 44 4 0 4 4 0 8 0
unpcb 144 256 0 241 6 5 1 6 0 8 0
syncache 336 8 0 8 1 1 0 1 0 8 0
tcpcb 736 126 0 122 7 6 1 7 0 8 0
arp 96 22 0 6 1 0 1 1 0 8 0
ipq 40 2 0 0 1 0 1 1 0 8 0
ipqe 40 3 0 0 1 0 1 1 0 8 0
inpcb 328 387 0 380 7 5 2 7 0 8 1
ip6q 72 3 0 3 1 1 0 1 0 8 0
ip6af 40 6 0 6 1 1 0 1 0 8 0
nd6 112 36 0 14 1 0 1 1 0 8 0
pkpcb 40 2 0 2 2 1 1 1 0 8 1
kcovpl 48 10 0 2 1 0 1 1 0 8 0
ppxss 1072 7 0 7 1 0 1 1 0 8 1
pfstscr 40 7 0 3 1 0 1 1 0 8 0
pfrktable 1344 4 0 1 1 0 1 1 0 8 0
pfsrclim 320 2 0 2 1 1 0 1 0 8 0
pfanchor 1288 2 0 0 1 0 1 1 0 8 0
pftag 88 1 0 0 1 0 1 1 0 8 0
pfstitem 24 3 0 0 1 0 1 1 0 8 0
pfstkey 128 6 0 3 1 0 1 1 0 8 0
pfstate 384 4 0 2 1 0 1 1 0 8 0
pfrule 1360 3 0 1 1 0 1 1 0 8 0
art_heap8 4096 2 0 0 2 0 2 2 0 8 0
art_heap4 256 617 0 195 31 4 27 30 0 8 0
art_table 40 619 0 195 5 0 5 5 0 8 0
art_node 32 147 0 52 1 0 1 1 0 8 0
sysvmsgpl 40 2 0 2 1 1 0 1 0 8 0
semapl 72 10 0 1 1 0 1 1 0 8 0
shmpl 112 5 0 1 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 2001 0 544 92 0 92 92 0 8 0
ffsino 256 2001 0 544 92 0 92 92 0 8 0
nchpl 144 2513 0 824 64 0 64 64 0 8 0
vnodes 216 2297 0 0 128 0 128 128 0 8 0
namei 1024 8278 0 8277 3 1 2 2 0 8 1
pfiaddrpl 120 1 0 0 1 0 1 1 0 8 0
kstatmem 264 35 0 14 2 0 2 2 0 8 0
scsiplug 72 2 0 2 2 1 1 1 0 8 1
scxspl 216 8691 0 8691 8 7 1 8 1 8 1
plimitpl 152 209 0 193 1 0 1 1 0 8 0
sigapl 424 690 0 651 6 1 5 6 0 8 0
knotepl 120 12659 0 12612 10 8 2 10 0 8 0
kqueuepl 184 88 0 79 1 0 1 1 0 8 0
pipepl 304 175 0 147 5 2 3 5 0 8 0
fdescpl 448 677 0 651 5 1 4 5 0 8 0
filepl 120 3467 0 3258 14 5 9 13 0 8 1
lockfpl 104 243 0 241 2 0 2 2 0 8 1
lockfspl 48 52 0 50 1 0 1 1 0 8 0
sessionpl 144 96 0 88 1 0 1 1 0 8 0
pgrppl 48 107 0 91 1 0 1 1 0 8 0
ucredpl 104 442 0 430 1 0 1 1 0 8 0
zombiepl 144 681 0 680 1 0 1 1 0 8 0
processpl 1152 690 0 651 4 0 4 4 0 8 0
procpl 664 1064 0 1024 6 1 5 6 0 8 0
sockpl 552 708 0 683 16 12 4 16 0 8 2
mcl64k 65536 16 0 16 2 1 1 1 0 8 1
mcl16k 16384 2 0 2 1 1 0 1 0 8 0
mcl8k 8192 9 0 9 2 1 1 1 0 8 1
mcl4k 4096 2834 0 2780 14 6 8 14 0 8 0
mcl2k2 2112 2 0 2 1 1 0 1 0 8 0
mcl2k 2048 366 0 363 1 0 1 1 0 8 0
mtagpl 96 6 0 4 1 0 1 1 0 8 0
mbufpl 256 7071 0 6894 18 6 12 18 0 8 0
bufpl 272 2859 0 104 184 0 184 184 0 8 0
anonpl 24 111652 0 108788 51 19 32 45 0 186 5
amapchunkpl 152 16203 0 15886 48 18 30 38 0 158 10
amappl16 200 1377 0 1358 5 2 3 5 0 8 0
amappl15 192 3 0 3 1 1 0 1 0 8 0
amappl14 184 438 0 436 1 0 1 1 0 8 0
amappl13 176 117 0 107 1 0 1 1 0 8 0
amappl12 168 921 0 897 2 0 2 2 0 8 0
amappl11 160 7 0 7 1 1 0 1 0 8 0
amappl10 152 55 0 45 1 0 1 1 0 8 0
amappl9 144 273 0 272 1 0 1 1 0 8 0
amappl8 136 100 0 99 1 0 1 1 0 8 0
amappl7 128 163 0 150 1 0 1 1 0 8 0
amappl6 120 184 0 181 1 0 1 1 0 8 0
amappl5 112 93 0 86 1 0 1 1 0 8 0
amappl4 104 263 0 247 1 0 1 1 0 8 0
amappl3 96 3029 0 2955 5 1 4 4 0 8 0
amappl2 88 546 0 486 2 0 2 2 0 8 0
amappl1 80 11533 0 10976 13 1 12 13 0 8 0
amappl 88 4372 0 4257 5 0 5 5 0 92 0
uvmvnodes 80 104 0 0 3 0 3 3 0 8 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 7 0 1 1 0 1 1 0 8 0
uaddrrnd 24 677 0 651 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 677 0 651 1 0 1 1 0 8 0
vmmpekpl 168 7264 0 7224 3 0 3 3 0 8 0
vmmpepl 168 50680 0 49124 85 3 82 83 0 357 2
vmsppl 368 676 0 651 4 1 3 4 0 8 0
rwobjpl 40 16605 0 15678 11 0 11 11 0 8 0
pdppl 4096 1360 0 1302 96 28 68 80 0 8 10
pvpl 32 308714 0 301455 139 42 97 123 0 265 16
pmappl 216 676 0 651 3 0 3 3 0 8 0
extentpl 40 45 0 27 1 0 1 1 0 8 0
phpool 112 562 0 59 16 0 16 16 0 8 0
ddb> machine ddbcpu 0
No such command
ddb> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff83418b05) at panic+0x1cf sys/kern/subr_prf.c:198
vgonel(fffff5006d40aa70,ffff80002a76c540) at vgonel+0x663
vrecycle(fffff5006d40aa70,ffff80002a76c540) at vrecycle+0x7c sys/kern/vfs_subr.c:1136
ufs_inactive(ffff80002a7d2da0) at ufs_inactive+0x359 sys/ufs/ufs/ufs_inode.c:107
VOP_INACTIVE(fffff5006d40aa70,ffff80002a76c540) at VOP_INACTIVE+0xfb sys/kern/vfs_vops.c:498
vput(fffff5006d40aa70) at vput+0xdc sys/kern/vfs_subr.c:789
VOP_REMOVE(fffff5006d40b480,fffff5006d40aa70,ffff80002a7d2f08) at VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336
dounlinkat(ffff80002a76c540,ffffff9c,7c8aa1862bc0,0) at dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1842
syscall(ffff80002a7d3070) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80002a7d3070) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7c8aa1863070, count: -11
ddb> machine ddbcpu 1
No such command
ddb> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff83418b05) at panic+0x1cf sys/kern/subr_prf.c:198
vgonel(fffff5006d40aa70,ffff80002a76c540) at vgonel+0x663
vrecycle(fffff5006d40aa70,ffff80002a76c540) at vrecycle+0x7c sys/kern/vfs_subr.c:1136
ufs_inactive(ffff80002a7d2da0) at ufs_inactive+0x359 sys/ufs/ufs/ufs_inode.c:107
VOP_INACTIVE(fffff5006d40aa70,ffff80002a76c540) at VOP_INACTIVE+0xfb sys/kern/vfs_vops.c:498
vput(fffff5006d40aa70) at vput+0xdc sys/kern/vfs_subr.c:789
VOP_REMOVE(fffff5006d40b480,fffff5006d40aa70,ffff80002a7d2f08) at VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336
dounlinkat(ffff80002a76c540,ffffff9c,7c8aa1862bc0,0) at dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1842
syscall(ffff80002a7d3070) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80002a7d3070) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7c8aa1863070, count: -11