panic: kernel diagnostic assertion "pg->wire_count == 1" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/vfs_biomem.c", line 310
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*314865 22888 0 0x2 0 0K syz-executor.3
285538 22991 0 0x2 0 1 syz-executor.2
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff82751deb) at panic+0x177 sys/kern/subr_prf.c:198
__assert(ffffffff827cd2be,ffffffff827b612f,136,ffffffff82795411) at __assert+0x25 sys/kern/subr_prf.c:157
buf_free_pages(fffffd8058ffb040) at buf_free_pages+0x1c2 sys/kern/vfs_biomem.c:299
buf_dealloc_mem(fffffd8058ffb040) at buf_dealloc_mem+0xdf sys/kern/vfs_biomem.c:179
buf_put(fffffd8058ffb040) at buf_put+0x161 sys/kern/vfs_bio.c:129
brelse(fffffd8058ffb040) at brelse+0x5b3 sys/kern/vfs_bio.c:957
vinvalbuf(fffffd807275fbd0,2,fffffd807f7d7888,ffff8000212435e8,0,ffffffffffffffff) at vinvalbuf+0x391 sys/kern/vfs_subr.c:2021
ffs_truncate(fffffd8067817780,0,4,fffffd807f7d7888) at ffs_truncate+0xf2a sys/ufs/ffs/ffs_inode.c:326
ufs_rmdir(ffff80002c9fb9e8) at ufs_rmdir+0x3a9 sys/ufs/ufs/ufs_vnops.c:1343
VOP_RMDIR(fffffd8067ce4cf8,fffffd807275fbd0,ffff80002c9fbac8) at VOP_RMDIR+0x122 sys/kern/vfs_vops.c:407
dounlinkat(ffff8000212435e8,ffffff9c,7f7ffffc7ee0,8) at dounlinkat+0x20e sys/kern/vfs_syscalls.c:1881
syscall(ffff80002c9fbc40) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline]
syscall(ffff80002c9fbc40) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:625
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffc7ed0, count: 1
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: kernel diagnostic assertion "pg->wire_count == 1" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/vfs_biomem.c", line 310
ddb{0}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff82751deb) at panic+0x177 sys/kern/subr_prf.c:198
__assert(ffffffff827cd2be,ffffffff827b612f,136,ffffffff82795411) at __assert+0x25 sys/kern/subr_prf.c:157
buf_free_pages(fffffd8058ffb040) at buf_free_pages+0x1c2 sys/kern/vfs_biomem.c:299
buf_dealloc_mem(fffffd8058ffb040) at buf_dealloc_mem+0xdf sys/kern/vfs_biomem.c:179
buf_put(fffffd8058ffb040) at buf_put+0x161 sys/kern/vfs_bio.c:129
brelse(fffffd8058ffb040) at brelse+0x5b3 sys/kern/vfs_bio.c:957
vinvalbuf(fffffd807275fbd0,2,fffffd807f7d7888,ffff8000212435e8,0,ffffffffffffffff) at vinvalbuf+0x391 sys/kern/vfs_subr.c:2021
ffs_truncate(fffffd8067817780,0,4,fffffd807f7d7888) at ffs_truncate+0xf2a sys/ufs/ffs/ffs_inode.c:326
ufs_rmdir(ffff80002c9fb9e8) at ufs_rmdir+0x3a9 sys/ufs/ufs/ufs_vnops.c:1343
VOP_RMDIR(fffffd8067ce4cf8,fffffd807275fbd0,ffff80002c9fbac8) at VOP_RMDIR+0x122 sys/kern/vfs_vops.c:407
dounlinkat(ffff8000212435e8,ffffff9c,7f7ffffc7ee0,8) at dounlinkat+0x20e sys/kern/vfs_syscalls.c:1881
syscall(ffff80002c9fbc40) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline]
syscall(ffff80002c9fbc40) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:625
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffc7ed0, count: -14
ddb{0}> show registers
rdi 0
rsi 0x1
rbp 0xffff80002c9fb4d0
rbx 0xffffffff82b25b8f cpu_info_full_primary+0x2b8f
rdx 0
rcx 0
rax 0xffff8000212435e8
r8 0x101010101010101
r9 0x8080808080808080
r10 0xeab3375b6e75132e
r11 0x4d7966cbcb7da84f
r12 0xffffffff82b25990 cpu_info_full_primary+0x2990
r13 0
r14 0
r15 0x1
rip 0xffffffff81b420b8 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff80002c9fb4c0
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb{0}> show proc
PROC (syz-executor.3) pid=314865 stat=onproc
flags process=2<EXEC> proc=0
pri=17, usrpri=52, nice=20
forw=0xffffffffffffffff, list=0xffff800021242dc0,0xffff800021200858
process=0xffff800021288448 user=0xffff80002c9f6000, vmspace=0xfffffd8008a0a1b8
estcpu=2, cpticks=2, pctcpu=0.0
user=0, sys=1, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
38182 251133 94724 0 2 0 syz-executor.7
31181 417896 61451 0 2 0 syz-executor.0
31181 200559 61451 0 2 0x4000000 syz-executor.0
31181 185817 61451 0 3 0x4000080 netcon syz-executor.0
16980 413950 42088 0 2 0x2 syz-executor.5
22595 515161 42088 0 2 0x2 syz-executor.6
32360 518797 0 0 3 0x14200 bored sosplice
*22888 314865 42088 0 7 0x2 syz-executor.3
94724 359613 42088 0 3 0x82 nanoslp syz-executor.7
71157 154393 42088 0 2 0x2 syz-executor.4
22991 285538 42088 0 7 0x2 syz-executor.2
19243 410585 42088 0 2 0x2 syz-executor.1
61451 380474 42088 0 3 0x82 nanoslp syz-executor.0
42088 341151 21925 0 2 0x2 syz-fuzzer
42088 132683 21925 0 3 0x4000082 nanoslp syz-fuzzer
42088 43091 21925 0 3 0x4000082 thrsleep syz-fuzzer
42088 87314 21925 0 3 0x4000082 thrsleep syz-fuzzer
42088 68991 21925 0 3 0x4000082 wait syz-fuzzer
42088 95236 21925 0 3 0x4000082 wait syz-fuzzer
42088 167978 21925 0 3 0x4000082 wait syz-fuzzer
42088 12354 21925 0 3 0x4000082 wait syz-fuzzer
42088 505978 21925 0 3 0x4000082 thrsleep syz-fuzzer
42088 286813 21925 0 3 0x4000082 wait syz-fuzzer
42088 263908 21925 0 3 0x4000082 thrsleep syz-fuzzer
42088 327152 21925 0 3 0x4000082 thrsleep syz-fuzzer
42088 118104 21925 0 3 0x4000082 wait syz-fuzzer
42088 321403 21925 0 3 0x4000082 wait syz-fuzzer
42088 37780 21925 0 2 0x4000002 syz-fuzzer
42088 520946 21925 0 3 0x4000082 wait syz-fuzzer
21925 459605 80917 0 3 0x10008a sigsusp ksh
80917 177407 81869 0 3 0x9a kqread sshd
56994 484510 1 0 3 0x100083 ttyin getty
81869 154559 1 0 3 0x88 kqread sshd
5261 281534 36976 74 3 0x1100092 bpf pflogd
36976 389991 1 0 3 0x80 netio pflogd
38532 511343 99666 73 3 0x1100010 ffs_fsync syslogd
99666 3112 1 0 3 0x100082 netio syslogd
65583 499202 1 0 2 0x100000 resolvd
39532 463443 25139 77 2 0x100092 dhcpleased
35759 412272 25139 77 3 0x100092 kqread dhcpleased
25139 180704 1 0 3 0x80 kqread dhcpleased
14233 248402 0 0 3 0x14200 bored smr
89416 309987 0 0 2 0x14200 zerothread
30734 249428 0 0 3 0x14200 aiodoned aiodoned
76080 147877 0 0 3 0x14200 syncer update
32758 512748 0 0 3 0x14200 cleaner cleaner
30539 67370 0 0 3 0x14200 reaper reaper
17804 393392 0 0 3 0x14200 pgdaemon pagedaemon
32277 86685 0 0 3 0x14200 bored viomb
3974 522369 0 0 3 0x40014200 acpi0 acpi0
36925 37298 0 0 3 0x40014200 idle1
11221 272040 0 0 3 0x14200 bored softnet
65081 65573 0 0 3 0x14200 bored softnet
93900 411342 0 0 2 0x14200 softnet
5556 32591 0 0 3 0x14200 bored softnet
6215 70926 0 0 3 0x14200 bored systqmp
48397 245487 0 0 3 0x14200 bored systq
4384 378493 0 0 3 0x40014200 bored softclock
77032 180187 0 0 3 0x40014200 idle0
1 141445 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
Process 22595 (syz-executor.6) thread 0xffff8000212e2dc8 (515161)
exclusive rrwlock inode r = 0 (0xfffffd807272e808)
#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+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline]
#10 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:625
#11 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd8067817708)
#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:418
#6 namei+0x55a sys/kern/vfs_lookup.c:250
#7 domkdirat+0x75 sys/kern/vfs_syscalls.c:3097
#8 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline]
#8 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:625
#9 Xsyscall+0x128
Process 22888 (syz-executor.3) thread 0xffff8000212435e8 (314865)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82db6228)
#0 witness_lock+0x44d
#1 __mp_acquire_count+0x48 sys/kern/kern_lock.c:227
#2 mi_switch+0x3bb sys/kern/sched_bsd.c:405
#3 sleep_finish+0x180 sys/kern/kern_synch.c:417
#4 tsleep+0x12c sys/kern/kern_synch.c:155
#5 biowait+0x91 sys/kern/vfs_bio.c:1268
#6 bwrite+0x21b sys/kern/vfs_bio.c:769
#7 ffs_update+0x27d sys/ufs/ffs/ffs_inode.c:113
#8 ffs_truncate+0xcec
#9 ufs_rmdir+0x3a9 sys/ufs/ufs/ufs_vnops.c:1343
#10 VOP_RMDIR+0x122 sys/kern/vfs_vops.c:407
#11 dounlinkat+0x20e sys/kern/vfs_syscalls.c:1881
#12 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline]
#12 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:625
#13 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd8067817818)
#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 vget+0x1fc sys/kern/vfs_subr.c:676
#6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119
#7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1324
#8 ufs_lookup+0x13ba sys/ufs/ufs/ufs_lookup.c:487
#9 VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85
#10 vfs_lookup+0x6e5 sys/kern/vfs_lookup.c:566
#11 namei+0x55a sys/kern/vfs_lookup.c:250
#12 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1848
#13 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline]
#13 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:625
#14 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd80678171b8)
#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:418
#6 namei+0x55a sys/kern/vfs_lookup.c:250
#7 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1848
#8 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline]
#8 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:625
#9 Xsyscall+0x128
Process 22991 (syz-executor.2) thread 0xffff800021202af0 (285538)
exclusive rrwlock inode r = 0 (0xfffffd807272e4d8)
#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+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline]
#10 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:625
#11 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd80672de4e0)
#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:418
#6 namei+0x55a sys/kern/vfs_lookup.c:250
#7 domkdirat+0x75 sys/kern/vfs_syscalls.c:3097
#8 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline]
#8 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:625
#9 Xsyscall+0x128
Process 38532 (syslogd) thread 0xffff8000211bd880 (511343)
exclusive rrwlock inode r = 0 (0xfffffd806e6b4700)
#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 sys_fsync+0xf5 sys/kern/vfs_syscalls.c:2935
#6 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline]
#6 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:625
#7 Xsyscall+0x128
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10205 6476K 6672K 78643K 11701 0
pcb 13 10K 11K 78643K 102 0
rtable 215 6K 7K 78643K 392 0
ifaddr 75 24K 26K 78643K 117 0
counters 60 35K 36K 78643K 80 0
ioctlops 0 0K 4K 78643K 1556 0
iov 0 0K 12K 78643K 11 0
mount 1 1K 1K 78643K 1 0
log 0 0K 0K 78643K 4 0
vnodes 1407 88K 88K 78643K 1860 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 1K 78643K 2 0
VM map 2 1K 1K 78643K 2 0
sem 12 0K 0K 78643K 122 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1697 195K 286K 78643K 12548 0
file desc 12 41K 89K 78643K 489 0
sigio 0 0K 0K 78643K 7 0
proc 70 91K 127K 78643K 568 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 26 0
in_multi 88 5K 6K 78643K 117 0
ether_multi 1 0K 0K 78643K 7 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 67 307K 307K 78643K 67 0
exec 0 0K 1K 78643K 419 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 291 84K 90K 78643K 5224 0
UVM aobj 6 2K 2K 78643K 6 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 6 0
NDP 12 0K 1K 78643K 39 0
temp 106 5772K 5840K 78643K 13934 0
kqueue 13 20K 24K 78643K 107 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 79 0 76 2 1 1 2 0 8 0
rtentry 112 124 0 25 4 0 4 4 0 8 0
unpcb 144 222 0 207 4 3 1 4 0 8 0
syncache 296 6 0 6 2 2 0 1 0 8 0
tcpqe 32 395 0 395 2 2 0 1 0 8 0
tcpcb 776 35 0 30 1 0 1 1 0 8 0
arp 120 20 0 4 1 0 1 1 0 8 0
inpcb 368 283 0 275 7 6 1 5 0 8 0
nd6 48 27 0 6 1 0 1 1 0 8 0
pkpcb 40 3 0 3 1 1 0 1 0 8 0
kcovpl 48 10 0 2 1 0 1 1 0 8 0
ppxss 1256 1 0 1 1 1 0 1 0 8 0
pppxif 1456 1 0 1 1 1 0 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 15 0 5 1 0 1 1 0 8 0
pfstkey 128 15 0 5 1 0 1 1 0 8 0
pfstate 384 15 0 5 2 0 2 2 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 256 512 0 100 30 2 28 30 0 8 0
art_table 32 513 0 100 4 0 4 4 0 8 0
art_node 16 123 0 33 1 0 1 1 0 8 0
sysvmsgpl 40 8 0 2 1 0 1 1 0 8 0
semupl 112 2 0 2 1 1 0 1 0 8 0
semapl 112 118 0 108 1 0 1 1 0 8 0
shmpl 112 3 0 0 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 2227 0 789 91 0 91 91 0 8 0
ffsino 272 2227 0 789 97 0 97 97 0 8 0
nchpl 144 2973 0 1334 63 0 63 63 0 8 0
uvmvnodes 80 2611 0 0 54 0 54 54 0 8 0
vnodes 216 2611 0 0 146 0 146 146 0 8 0
namei 1024 11344 0 11342 2 1 1 2 0 8 0
percpumem 16 53 0 10 1 0 1 1 0 8 0
kstatmem 264 42 0 18 2 0 2 2 0 8 0
scxspl 216 9550 0 9549 10 9 1 8 0 8 0
plimitpl 152 189 0 173 1 0 1 1 0 8 0
sigapl 424 795 0 751 8 1 7 7 0 8 0
futexpl 64 3772 0 3772 2 1 1 1 0 8 1
knotepl 120 237 0 0 7 0 7 7 0 8 0
kqueuepl 216 184 0 175 5 4 1 5 0 8 0
pipepl 320 294 0 266 9 6 3 8 0 8 0
fdescpl 496 777 0 752 5 0 5 5 0 8 0
filepl 152 5336 0 5093 20 10 10 19 0 8 0
lockfpl 104 70 0 68 1 0 1 1 0 8 0
lockfspl 48 33 0 31 1 0 1 1 0 8 0
sessionpl 144 26 0 9 1 0 1 1 0 8 0
pgrppl 48 29 0 12 1 0 1 1 0 8 0
ucredpl 104 1522 0 1510 1 0 1 1 0 8 0
zombiepl 144 752 0 751 1 0 1 1 0 8 0
processpl 1072 795 0 751 4 0 4 4 0 8 0
procpl 696 1484 0 1423 9 2 7 8 0 8 0
sosppl 168 10 0 10 2 2 0 1 0 8 0
sockpl 488 587 0 561 17 13 4 17 0 8 0
mcl64k 65536 4 0 0 1 0 1 1 0 8 0
mcl16k 16384 3 0 0 1 0 1 1 0 8 0
mcl12k 12288 7 0 0 1 0 1 1 0 8 0
mcl9k 9216 5 0 0 1 0 1 1 0 8 0
mcl8k 8192 6 0 0 1 0 1 1 0 8 0
mcl4k 4096 8 0 0 1 0 1 1 0 8 0
mcl2k 2048 537 0 0 67 1 66 67 0 8 0
mtagpl 96 141 0 0 4 0 4 4 0 8 0
mbufpl 256 665 0 0 40 0 40 40 0 8 0
bufpl 288 5943 0 149 414 0 414 414 0 8 0
anonpl 24 244805 0 229709 261 18 243 245 0 186 120
amapchunkpl 152 16659 0 15933 96 8 88 90 0 158 47
amappl16 200 3852 0 3326 44 14 30 43 0 8 0
amappl15 192 2 0 2 1 1 0 1 0 8 0
amappl14 184 169 0 154 2 0 2 2 0 8 0
amappl13 176 5 0 4 1 0 1 1 0 8 0
amappl12 168 432 0 427 1 0 1 1 0 8 0
amappl11 160 48 0 34 1 0 1 1 0 8 0
amappl10 152 43 0 34 1 0 1 1 0 8 0
amappl9 144 968 0 966 1 0 1 1 0 8 0
amappl8 136 164 0 120 2 0 2 2 0 8 0
amappl7 128 170 0 146 2 0 2 2 0 8 0
amappl6 120 178 0 166 2 1 1 2 0 8 0
amappl5 112 135 0 126 1 0 1 1 0 8 0
amappl4 104 511 0 479 2 1 1 2 0 8 0
amappl3 96 1753 0 1710 2 0 2 2 0 8 0
amappl2 88 1168 0 1092 4 2 2 4 0 8 0
amappl1 80 20069 0 19377 28 10 18 28 0 8 0
amappl 88 4680 0 4508 6 1 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 0 1 0 1 1 0 8 0
uaddrrnd 24 778 0 753 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 778 0 753 1 0 1 1 0 8 0
vmmpekpl 168 12631 0 12566 4 0 4 4 0 8 0
vmmpepl 168 82692 0 80224 169 21 148 152 0 357 22
vmsppl 440 777 0 753 6 2 4 5 0 8 0
rwobjpl 56 26732 0 22479 63 1 62 62 0 8 0
pdppl 4096 1563 0 1506 137 68 69 81 0 8 12
pvpl 32 541202 0 521110 481 48 433 438 0 265 219
pmappl 248 777 0 753 3 1 2 3 0 8 0
extentpl 40 56 0 38 1 0 1 1 0 8 0
phpool 112 897 0 81 24 0 24 24 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(ffffffff82751deb) at panic+0x177 sys/kern/subr_prf.c:198
__assert(ffffffff827cd2be,ffffffff827b612f,136,ffffffff82795411) at __assert+0x25 sys/kern/subr_prf.c:157
buf_free_pages(fffffd8058ffb040) at buf_free_pages+0x1c2 sys/kern/vfs_biomem.c:299
buf_dealloc_mem(fffffd8058ffb040) at buf_dealloc_mem+0xdf sys/kern/vfs_biomem.c:179
buf_put(fffffd8058ffb040) at buf_put+0x161 sys/kern/vfs_bio.c:129
brelse(fffffd8058ffb040) at brelse+0x5b3 sys/kern/vfs_bio.c:957
vinvalbuf(fffffd807275fbd0,2,fffffd807f7d7888,ffff8000212435e8,0,ffffffffffffffff) at vinvalbuf+0x391 sys/kern/vfs_subr.c:2021
ffs_truncate(fffffd8067817780,0,4,fffffd807f7d7888) at ffs_truncate+0xf2a sys/ufs/ffs/ffs_inode.c:326
ufs_rmdir(ffff80002c9fb9e8) at ufs_rmdir+0x3a9 sys/ufs/ufs/ufs_vnops.c:1343
VOP_RMDIR(fffffd8067ce4cf8,fffffd807275fbd0,ffff80002c9fbac8) at VOP_RMDIR+0x122 sys/kern/vfs_vops.c:407
dounlinkat(ffff8000212435e8,ffffff9c,7f7ffffc7ee0,8) at dounlinkat+0x20e sys/kern/vfs_syscalls.c:1881
syscall(ffff80002c9fbc40) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline]
syscall(ffff80002c9fbc40) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:625
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffc7ed0, count: -14
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
__mp_lock(ffffffff82db6020) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82db6020) at __mp_lock+0x122 sys/kern/kern_lock.c:147
__mp_acquire_count(ffffffff82db6020,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227
mi_switch() at mi_switch+0x3bb sys/kern/sched_bsd.c:405
sleep_finish(ffff800023d3e930,1) at sleep_finish+0x180 sys/kern/kern_synch.c:417
tsleep(fffffd807e996db8,11,ffffffff82818941,0) at tsleep+0x12c sys/kern/kern_synch.c:155
getblk(fffffd807efb46c0,320,4000,0,ffffffffffffffff) at getblk+0x13c sys/kern/vfs_bio.c:1028
bread(fffffd807efb46c0,320,4000,ffff800023d3ebd8) at bread+0x3a bio_doread sys/kern/vfs_bio.c:433 [inline]
bread(fffffd807efb46c0,320,4000,ffff800023d3ebd8) at bread+0x3a sys/kern/vfs_bio.c:478
ffs_update(fffffd807272e440,1) at ffs_update+0x14b sys/ufs/ffs/ffs_inode.c:91
ufs_mkdir(ffff800023d3edd0) at ufs_mkdir+0x662 sys/ufs/ufs/ufs_vnops.c:1220
VOP_MKDIR(fffffd8065a5c1d8,ffff800023d3ef30,ffff800023d3ef60,ffff800023d3ee60) at VOP_MKDIR+0xbf sys/kern/vfs_vops.c:388
domkdirat(ffff800021202af0,ffffff9c,7f7fffff1e20,1ff) at domkdirat+0x121 sys/kern/vfs_syscalls.c:3112
end trace frame: 0xffff800023d3f0d0, count: 0
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
__mp_lock(ffffffff82db6020) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82db6020) at __mp_lock+0x122 sys/kern/kern_lock.c:147
__mp_acquire_count(ffffffff82db6020,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227
mi_switch() at mi_switch+0x3bb sys/kern/sched_bsd.c:405
sleep_finish(ffff800023d3e930,1) at sleep_finish+0x180 sys/kern/kern_synch.c:417
tsleep(fffffd807e996db8,11,ffffffff82818941,0) at tsleep+0x12c sys/kern/kern_synch.c:155
getblk(fffffd807efb46c0,320,4000,0,ffffffffffffffff) at getblk+0x13c sys/kern/vfs_bio.c:1028
bread(fffffd807efb46c0,320,4000,ffff800023d3ebd8) at bread+0x3a bio_doread sys/kern/vfs_bio.c:433 [inline]
bread(fffffd807efb46c0,320,4000,ffff800023d3ebd8) at bread+0x3a sys/kern/vfs_bio.c:478
ffs_update(fffffd807272e440,1) at ffs_update+0x14b sys/ufs/ffs/ffs_inode.c:91
ufs_mkdir(ffff800023d3edd0) at ufs_mkdir+0x662 sys/ufs/ufs/ufs_vnops.c:1220
VOP_MKDIR(fffffd8065a5c1d8,ffff800023d3ef30,ffff800023d3ef60,ffff800023d3ee60) at VOP_MKDIR+0xbf sys/kern/vfs_vops.c:388
domkdirat(ffff800021202af0,ffffff9c,7f7fffff1e20,1ff) at domkdirat+0x121 sys/kern/vfs_syscalls.c:3112
syscall(ffff800023d3f0e0) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline]
syscall(ffff800023d3f0e0) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:625
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7fffff1e90, count: -16