panic: ffs_valloc: dup alloc
Stopped at db_enter+0x25: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
94754 45154 0 0 0 1 syz-executor
*426561 50689 0 0x2 0 0K syz-executor
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff830e5590) at panic+0x1e5 sys/kern/subr_prf.c:198
ffs_inode_alloc(fffffd8079186660,41c0,fffffd807f7d3000,ffff800032d88538) at ffs_inode_alloc+0x96c sys/ufs/ffs/ffs_alloc.c:404
ufs_mkdir(ffff800032d885a0) at ufs_mkdir+0x113 sys/ufs/ufs/ufs_vnops.c:1112
VOP_MKDIR(fffffd806eacbcd8,ffff800032d88700,ffff800032d88730,ffff800032d88630) at VOP_MKDIR+0x102 sys/kern/vfs_vops.c:394
domkdirat(ffff8000ffff6f50,ffffff9c,7d998155d710,1c0) at domkdirat+0x179 sys/kern/vfs_syscalls.c:3099
syscall(ffff800032d888b0) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff800032d888b0) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7d998155d6d0, count: 7
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: ffs_valloc: dup alloc
ddb{0}> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff830e5590) at panic+0x1e5 sys/kern/subr_prf.c:198
ffs_inode_alloc(fffffd8079186660,41c0,fffffd807f7d3000,ffff800032d88538) at ffs_inode_alloc+0x96c sys/ufs/ffs/ffs_alloc.c:404
ufs_mkdir(ffff800032d885a0) at ufs_mkdir+0x113 sys/ufs/ufs/ufs_vnops.c:1112
VOP_MKDIR(fffffd806eacbcd8,ffff800032d88700,ffff800032d88730,ffff800032d88630) at VOP_MKDIR+0x102 sys/kern/vfs_vops.c:394
domkdirat(ffff8000ffff6f50,ffffff9c,7d998155d710,1c0) at domkdirat+0x179 sys/kern/vfs_syscalls.c:3099
syscall(ffff800032d888b0) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff800032d888b0) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7d998155d6d0, count: -8
ddb{0}> show registers
rdi 0
rsi 0x1
rbp 0xffff800032d882c0
rbx 0xffffffff83473d87 cpu_info_full_primary+0x2d87
rdx 0
rcx 0xffff8000ffff6f50
rax 0xffffffff83472ff0 cpu_info_full_primary+0x1ff0
r8 0x101010101010101
r9 0x8080808080808080
r10 0x6c9b8460a3425983
r11 0x73d8a769a54814a8
r12 0xffffffff83473b88 cpu_info_full_primary+0x2b88
r13 0
r14 0
r15 0x1
rip 0xffffffff826b1a55 db_enter+0x25
cs 0x8
rflags 0x246
rsp 0xffff800032d882b0
ss 0x10
db_enter+0x25: addq $0x8,%rsp
ddb{0}> show proc
PROC (syz-executor) tid=426561 pid=50689 tcnt=1 stat=onproc
flags process=2<EXEC> proc=0
runpri=50, usrpri=50, slppri=32, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff8000ffff5c00,0xffff8000ffff6a50
process=0xffff8000ffff1fd0 user=0xffff800032d83000, vmspace=0xfffffd80695f7898
estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
45154 94754 50212 0 7 0 syz-executor
45154 366574 50212 0 2 0x4000000 syz-executor
34511 459399 16219 0 2 0 syz-executor
*50689 426561 46357 0 7 0x2 syz-executor
63912 48172 69973 0 3 0x80 nanoslp syz-executor
63912 455704 69973 0 3 0x4000080 tunread syz-executor
34825 194445 20168 0 2 0x480 syz-executor
34825 200992 20168 0 3 0x4000080 kqsel syz-executor
34825 212347 20168 0 3 0x4000080 fsleep syz-executor
52434 76972 1 0 3 0x100083 ttyopn getty
60997 516957 0 0 3 0x14200 bored sosplice
15162 243892 46357 0 3 0x82 wait syz-executor
69973 343221 46357 0 2 0x482 syz-executor
50212 17541 46357 0 3 0x82 nanoslp syz-executor
16219 162606 46357 0 3 0x82 nanoslp syz-executor
20168 375795 46357 0 2 0x482 syz-executor
46357 349268 86077 0 2 0x2 syz-executor
86077 455883 31430 0 3 0x10008a sigsusp ksh
31430 152025 95418 0 3 0x98 kqread sshd-session
95418 396835 1218 0 3 0x92 kqread sshd-session
1218 513101 1 0 3 0x88 kqread sshd
14011 259804 82199 74 3 0x1100092 bpf pflogd
82199 519033 1 0 3 0x80 sbwait pflogd
31462 49138 25964 73 3 0x1100090 kqread syslogd
25964 295777 1 0 3 0x100082 sbwait syslogd
4188 119687 1 0 3 0x100080 kqread resolvd
32250 299919 92362 77 3 0x100092 kqread dhcpleased
31760 494900 92362 77 3 0x100092 kqread dhcpleased
92362 485892 1 0 3 0x80 kqread dhcpleased
72844 322602 0 0 3 0x14200 bored smr
31024 76871 0 0 3 0x14200 pgzero zerothread
83666 269849 0 0 3 0x14200 aiodoned aiodoned
52819 389366 0 0 3 0x14200 syncer update
354 309590 0 0 3 0x14200 cleaner cleaner
15165 145106 0 0 3 0x14200 reaper reaper
93233 199204 0 0 3 0x14200 pgdaemon pagedaemon
13587 217155 0 0 3 0x14200 bored viomb
91018 134550 0 0 3 0x40014200 acpi0 acpi0
50140 280176 0 0 3 0x40014200 idle1
8836 513789 0 0 3 0x14200 bored softnet3
15763 271504 0 0 3 0x14200 bored softnet2
35907 155743 0 0 3 0x14200 bored softnet1
17298 442875 0 0 2 0x14200 softnet0
74566 281275 0 0 3 0x14200 bored systqmp
49566 293991 0 0 3 0x14200 bored systq
43158 472174 0 0 3 0x14200 tmoslp softclockmp
86753 133039 0 0 3 0x40014200 tmoslp softclock
45174 197599 0 0 3 0x40014200 idle0
1 101693 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
Process 45154 (syz-executor) thread 0xffff8000ffff6020 (94754)
shared rwlock vmmaplk r = 0 (0xfffffd80695f7460)
#0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151
#1 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1785
#2 uvm_fault_check+0x47 sys/uvm/uvm_fault.c:672
#3 uvm_fault+0x112 sys/uvm/uvm_fault.c:600
#4 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188
#5 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436
#6 recall_trap+0x8
Process 50689 (syz-executor) thread 0xffff8000ffff6f50 (426561)
exclusive rrwlock inode r = 0 (0xfffffd80638d20a8)
#0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151
#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 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:169
#5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1230
#6 ffs_inode_alloc+0x283 sys/ufs/ffs/ffs_alloc.c:393
#7 ufs_mkdir+0x113 sys/ufs/ufs/ufs_vnops.c:1112
#8 VOP_MKDIR+0x102 sys/kern/vfs_vops.c:394
#9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3099
#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 rrwlock inode r = 0 (0xfffffd80791866f8)
#0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151
#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 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418
#6 namei+0x7aa sys/kern/vfs_lookup.c:250
#7 domkdirat+0x8b sys/kern/vfs_syscalls.c:3084
#8 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
#8 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
#9 Xsyscall+0x128
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff835a3c08)
#0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151
#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
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10194 14185K 14576K 166960K 11547 0
pcb 17 12K 12K 166960K 45 0
rtable 206 5K 6K 166960K 381 0
pf 35 17K 18K 166960K 48 0
ifaddr 39 6K 7K 166960K 48 0
ifgroup 56 2K 2K 166960K 60 0
counters 64 36K 36K 166960K 66 0
ioctlops 0 0K 4K 166960K 1491 0
iov 0 0K 12K 166960K 7 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1368 86K 86K 166960K 1477 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 3 5K 9K 166960K 6 0
VM map 2 1K 1K 166960K 2 0
sem 9 0K 0K 166960K 10 0
dirhash 12 2K 2K 166960K 12 0
ACPI 1690 195K 286K 166960K 12418 0
file desc 15 50K 97K 166960K 268 0
sigio 0 0K 0K 166960K 4 0
proc 72 91K 140K 166960K 557 0
subproc 91 5K 6K 166960K 104 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 10 0
in_multi 84 6K 7K 166960K 109 0
ether_multi 1 0K 0K 166960K 2 0
mrt 0 0K 0K 166960K 1 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 61 281K 281K 166960K 61 0
exec 0 0K 1K 166960K 381 0
tdb 3 0K 0K 166960K 3 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 209 64K 77K 166960K 4087 0
UVM aobj 3 2K 2K 166960K 3 0
pinsyscall 40 80K 106K 166960K 1353 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 0K 166960K 6 0
NDP 12 0K 2K 166960K 31 0
temp 34 6810K 6876K 166960K 6832 0
kqueue 13 20K 26K 166960K 48 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 44 0 41 1 0 1 1 0 8 0
rtentry 112 126 0 30 4 0 4 4 0 8 0
unpcb 144 125 0 108 1 0 1 1 0 8 0
syncache 336 6 0 6 1 0 1 1 0 8 1
tcpqe 32 1 0 1 1 0 1 1 0 8 1
tcpcb 808 58 0 53 2 0 2 2 0 8 0
arp 120 21 0 5 1 0 1 1 0 8 0
inpcb 336 194 0 186 2 0 2 2 0 8 0
nd6 136 27 0 8 1 0 1 1 0 8 0
kcovpl 48 8 0 1 1 0 1 1 0 8 0
pfosfp 40 1428 0 1005 5 0 5 5 0 8 0
pfosfpen 112 1428 0 714 21 0 21 21 0 8 0
pfstitem 24 35 0 0 1 0 1 1 0 8 0
pfstkey 128 35 0 0 2 0 2 2 0 8 0
pfstate 376 35 0 0 4 0 4 4 0 8 0
pfrule 1344 21 0 16 2 1 1 2 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 508 0 111 29 0 29 29 0 8 1
art_table 32 509 0 111 4 0 4 4 0 8 0
art_node 16 125 0 37 1 0 1 1 0 8 0
semupl 112 1 0 1 1 0 1 1 0 8 1
semapl 112 8 0 1 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 1791 0 283 95 0 95 95 0 8 0
ffsino 272 1793 0 285 102 0 102 102 0 8 0
nchpl 144 2172 0 484 63 0 63 63 0 8 0
uvmvnodes 80 1955 0 0 40 0 40 40 0 8 0
vnodes 216 1955 0 0 109 0 109 109 0 8 0
namei 1024 6596 0 6595 2 0 2 2 0 8 1
percpumem 16 47 0 1 1 0 1 1 0 8 0
kstatmem 264 26 0 2 2 0 2 2 0 8 0
scxspl 216 6734 0 6734 9 1 8 8 1 8 8
plimitpl 152 42 0 25 1 0 1 1 0 8 0
sigapl 424 570 0 522 8 1 7 7 0 8 1
futexpl 64 2201 0 2200 1 0 1 1 0 8 0
knotepl 120 300 0 0 10 0 10 10 0 8 0
kqueuepl 216 60 0 50 1 0 1 1 0 8 0
pipepl 320 119 0 92 3 0 3 3 0 8 0
fdescpl 496 551 0 522 6 0 6 6 0 8 1
filepl 152 2214 0 1987 11 0 11 11 0 8 0
lockfpl 104 54 0 52 1 0 1 1 0 8 0
lockfspl 48 27 0 25 1 0 1 1 0 8 0
sessionpl 144 25 0 16 1 0 1 1 0 8 0
pgrppl 48 37 0 20 1 0 1 1 0 8 0
ucredpl 104 200 0 187 1 0 1 1 0 8 0
zombiepl 144 525 0 522 1 0 1 1 0 8 0
processpl 1160 570 0 522 5 0 5 5 0 8 1
procpl 648 827 0 775 7 1 6 6 0 8 0
sosppl 168 3 0 3 1 0 1 1 0 8 1
sockpl 664 365 0 337 4 0 4 4 0 8 1
mcl64k 65536 2 0 0 1 0 1 1 0 8 0
mcl8k 8192 6 0 0 1 0 1 1 0 8 0
mcl4k 4096 3 0 0 1 0 1 1 0 8 0
mcl2k 2048 210 0 0 27 0 27 27 0 8 0
mtagpl 96 4 0 0 1 0 1 1 0 8 0
mbufpl 256 217 0 0 14 0 14 14 0 8 0
bufpl 280 3509 0 98 244 0 244 244 0 8 0
anonpl 24 165201 0 162019 46 0 46 46 0 185 21
amapchunkpl 152 13342 0 12927 25 0 25 25 0 158 5
amappl16 200 4384 0 4370 14 5 9 14 0 8 7
amappl15 192 81 0 81 1 1 0 1 0 8 0
amappl14 184 118 0 106 1 0 1 1 0 8 0
amappl13 176 10 0 10 1 1 0 1 0 8 0
amappl12 168 1200 0 1170 4 1 3 3 0 8 1
amappl11 160 58 0 44 1 0 1 1 0 8 0
amappl10 152 11 0 11 1 1 0 1 0 8 0
amappl9 144 156 0 156 2 1 1 1 0 8 1
amappl8 136 28 0 26 1 0 1 1 0 8 0
amappl7 128 111 0 99 1 0 1 1 0 8 0
amappl6 120 189 0 188 1 0 1 1 0 8 0
amappl5 112 158 0 147 1 0 1 1 0 8 0
amappl4 104 310 0 292 1 0 1 1 0 8 0
amappl3 96 2569 0 2473 4 0 4 4 0 8 0
amappl2 88 679 0 613 2 0 2 2 0 8 0
amappl1 80 8417 0 7856 14 0 14 14 0 8 0
amappl 88 3689 0 3542 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 2 0 0 1 0 1 1 0 8 0
uaddrrnd 24 551 0 522 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 551 0 522 1 0 1 1 0 8 0
vmmpekpl 168 6095 0 6046 3 0 3 3 0 8 0
vmmpepl 168 43340 0 41635 93 0 93 93 0 357 7
vmsppl 440 550 0 522 6 1 5 5 0 8 1
rwobjpl 56 18642 0 15808 41 0 41 41 0 8 0
pdppl 4096 1109 0 1044 103 30 73 87 0 8 8
pvpl 32 13833 0 0 112 0 112 112 0 265 0
pmappl 248 550 0 522 3 0 3 3 0 8 0
extentpl 40 56 0 38 1 0 1 1 0 8 0
phpool 112 387 0 32 11 0 11 11 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(ffffffff830e5590) at panic+0x1e5 sys/kern/subr_prf.c:198
ffs_inode_alloc(fffffd8079186660,41c0,fffffd807f7d3000,ffff800032d88538) at ffs_inode_alloc+0x96c sys/ufs/ffs/ffs_alloc.c:404
ufs_mkdir(ffff800032d885a0) at ufs_mkdir+0x113 sys/ufs/ufs/ufs_vnops.c:1112
VOP_MKDIR(fffffd806eacbcd8,ffff800032d88700,ffff800032d88730,ffff800032d88630) at VOP_MKDIR+0x102 sys/kern/vfs_vops.c:394
domkdirat(ffff8000ffff6f50,ffffff9c,7d998155d710,1c0) at domkdirat+0x179 sys/kern/vfs_syscalls.c:3099
syscall(ffff800032d888b0) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff800032d888b0) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7d998155d6d0, count: -8
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
__mp_lock(ffffffff835a3a00) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline]
__mp_lock(ffffffff835a3a00) at __mp_lock+0x192 sys/kern/kern_lock.c:144
uvm_fault(fffffd80695f7370,7d0e2c8d000,0,2) at uvm_fault+0x1ed sys/uvm/uvm_fault.c:622
upageflttrap(ffff8000371d0180,7d0e2c8d000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188
usertrap(ffff8000371d0180) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7df9ce474df0, count: 7
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
__mp_lock(ffffffff835a3a00) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline]
__mp_lock(ffffffff835a3a00) at __mp_lock+0x192 sys/kern/kern_lock.c:144
uvm_fault(fffffd80695f7370,7d0e2c8d000,0,2) at uvm_fault+0x1ed sys/uvm/uvm_fault.c:622
upageflttrap(ffff8000371d0180,7d0e2c8d000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188
usertrap(ffff8000371d0180) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7df9ce474df0, count: -8