uvm_fault: x86_ipi_db (8)
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syzbot
Feb 18, 2022, 9:28:19 PM2/18/22
to syzkaller-o...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 7831279e5843 Move prototypes for checklabel(), readlabel()..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=12b5be02700000
kernel config: https://syzkaller.appspot.com/x/.config?x=bf87b6915a88cd0d
dashboard link: https://syzkaller.appspot.com/bug?extid=8b6d073735f11e92c455
Unfortunately, I don't have any reproducer for this issue yet.
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+8b6d07...@syzkaller.appspotmail.com
*cpu1: uvm_fault(0xfffffd80762b4e70, 0x8, 0, 1) -> e
ddb{0}> trace
proc_trampoline() at proc_trampoline+0xdc
end of kernel
end trace frame: 0x7f7ffffbbb50, count: -1
ddb{0}> show registers
rdi 0
rsi 0
rbp 0xffff800027af88b0
rbx 0
rdx 0
rcx 0
rax 0x2a
r8 0xffff800027af87e0
r9 0
r10 0x28c77be3160478e3
r11 0x285c900cf82ec285
r12 0
r13 0
r14 0
r15 0
rip 0xffffffff823af50c proc_trampoline+0xdc
cs 0x8
rflags 0x246
rsp 0xffff800027af8830
ss 0
proc_trampoline+0xdc: movl $0,%gs:0x538
ddb{0}> show proc
PROC (syz-executor.3) pid=427184 stat=onproc
flags process=10<SUGID> proc=0
pri=81, usrpri=81, nice=20
forw=0xffffffffffffffff, list=0xffff8000ffff5ce8,0xffff8000ffff4a98
process=0xffff80002116d900 user=0xffff800027af3000, vmspace=0xfffffd8066a59e78
estcpu=36, cpticks=1, pctcpu=0.0
user=0, sys=1, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
*31165 427184 58708 32767 7 0x10 syz-executor.3
69192 346612 75684 32767 3 0x90 nanoslp syz-executor.2
69192 358861 75684 32767 3 0x4000090 fsleep syz-executor.2
69192 305775 75684 32767 2 0x4000010 syz-executor.2
54042 183253 75116 32767 2 0x10 syz-executor.0
54042 97026 75116 32767 3 0x4000090 netio syz-executor.0
81157 503514 35466 32767 2 0x10 syz-executor.5
81157 162630 35466 32767 7 0x4000010 syz-executor.5
81157 177708 35466 32767 2 0x4000010 syz-executor.5
84736 317076 64605 32767 3 0x90 nanoslp syz-executor.6
84736 297946 64605 32767 3 0x4000090 netio syz-executor.6
64605 197691 1482 32767 3 0x90 nanoslp syz-executor.6
1482 187718 14402 0 3 0x82 wait syz-executor.6
58708 249590 10888 32767 3 0x90 nanoslp syz-executor.3
10888 200213 14402 0 3 0x82 wait syz-executor.3
35466 106751 61194 32767 3 0x90 nanoslp syz-executor.5
61194 144873 14402 0 3 0x82 wait syz-executor.5
91180 414768 0 0 3 0x14200 bored sosplice
67420 188154 46010 32767 3 0x90 nanoslp syz-executor.7
46010 198247 14402 0 3 0x82 wait syz-executor.7
6485 355003 13990 32767 3 0x10 biowait syz-executor.4
13990 108634 14402 0 3 0x82 wait syz-executor.4
81503 55489 26425 32767 3 0x10 biowait syz-executor.1
75684 247753 79867 32767 3 0x90 nanoslp syz-executor.2
79867 14925 14402 0 3 0x82 wait syz-executor.2
26425 221526 14402 0 3 0x82 wait syz-executor.1
75116 317015 61496 32767 3 0x90 nanoslp syz-executor.0
61496 432654 14402 0 3 0x82 wait syz-executor.0
14402 52454 94740 0 3 0x82 thrsleep syz-fuzzer
14402 121786 94740 0 3 0x4000082 nanoslp syz-fuzzer
14402 121645 94740 0 3 0x4000082 thrsleep syz-fuzzer
14402 241420 94740 0 3 0x4000082 thrsleep syz-fuzzer
14402 218983 94740 0 3 0x4000082 kqread syz-fuzzer
14402 159364 94740 0 3 0x4000082 thrsleep syz-fuzzer
14402 521264 94740 0 3 0x4000082 thrsleep syz-fuzzer
14402 405421 94740 0 3 0x4000082 thrsleep syz-fuzzer
14402 26459 94740 0 3 0x4000082 thrsleep syz-fuzzer
14402 318084 94740 0 3 0x4000082 nanoslp syz-fuzzer
94740 247027 99308 0 3 0x10008a sigsusp ksh
99308 86165 85791 0 3 0x9a kqread sshd
45430 284632 1 0 3 0x100083 ttyin getty
85791 518851 1 0 3 0x88 kqread sshd
14026 243337 56893 73 3 0x1100090 kqread syslogd
56893 188294 1 0 3 0x100082 netio syslogd
56909 522565 1 0 3 0x100080 kqread resolvd
68651 292639 33520 77 3 0x100092 kqread dhcpleased
67478 369178 33520 77 3 0x100092 kqread dhcpleased
33520 72940 1 0 3 0x80 kqread dhcpleased
7673 337117 0 0 3 0x14200 bored smr
9444 192621 0 0 2 0x14200 zerothread
19557 389833 0 0 3 0x14200 aiodoned aiodoned
18086 132024 0 0 3 0x14200 syncer update
66165 207445 0 0 3 0x14200 cleaner cleaner
50542 60743 0 0 3 0x14200 reaper reaper
30828 106397 0 0 3 0x14200 pgdaemon pagedaemon
18510 163107 0 0 3 0x14200 bored viomb
86737 121181 0 0 3 0x40014200 acpi0 acpi0
32059 168564 0 0 3 0x40014200 idle1
36604 407328 0 0 3 0x14200 bored softnet
25588 462766 0 0 3 0x14200 bored systqmp
93095 77108 0 0 3 0x14200 bored systq
29081 340144 0 0 3 0x40014200 bored softclock
77281 12267 0 0 3 0x40014200 idle0
1 384419 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
CPU 0:
exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806a90eac8)
#0 witness_lock+0x44d
#1 mtx_enter_try+0x100
#2 mtx_enter+0x4b sys/kern/kern_lock.c:266
#3 pmap_extract+0xa2 sys/arch/amd64/amd64/pmap.c:1517
#4 uvm_fault_upper_lookup+0x129 sys/uvm/uvm_fault.c:852
#5 uvm_fault+0x139 sys/uvm/uvm_fault.c:607
#6 upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181
#7 usertrap+0x1aa sys/arch/amd64/amd64/trap.c:403
#8 recall_trap+0x8
Process 31165 (syz-executor.3) thread 0xffff8000ffff5508 (427184)
exclusive rwlock amaplk r = 0 (0xfffffd80679e5128)
#0 witness_lock+0x44d
#1 uvm_fault_check+0x3ca sys/uvm/uvm_fault.c:774
#2 uvm_fault+0x102 sys/uvm/uvm_fault.c:602
#3 upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181
#4 usertrap+0x1aa sys/arch/amd64/amd64/trap.c:403
#5 recall_trap+0x8
shared rwlock vmmaplk r = 0 (0xfffffd8066a59e90)
#0 witness_lock+0x44d
#1 uvmfault_lookup+0xd9 sys/uvm/uvm_fault.c:1758
#2 uvm_fault_check+0x3a sys/uvm/uvm_fault.c:674
#3 uvm_fault+0x102 sys/uvm/uvm_fault.c:602
#4 upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181
#5 usertrap+0x1aa sys/arch/amd64/amd64/trap.c:403
#6 recall_trap+0x8
exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806a90eac8)
#0 witness_lock+0x44d
#1 mtx_enter_try+0x100
#2 mtx_enter+0x4b sys/kern/kern_lock.c:266
#3 pmap_extract+0xa2 sys/arch/amd64/amd64/pmap.c:1517
#4 uvm_fault_upper_lookup+0x129 sys/uvm/uvm_fault.c:852
#5 uvm_fault+0x139 sys/uvm/uvm_fault.c:607
#6 upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181
#7 usertrap+0x1aa sys/arch/amd64/amd64/trap.c:403
#8 recall_trap+0x8
Process 81157 (syz-executor.5) thread 0xffff800027b27a50 (162630)
exclusive kernel_lock &kernel_lock r = 1 (0xffffffff829b2b50)
#0 witness_lock+0x44d
#1 __mp_acquire_count+0x48 sys/kern/kern_lock.c:227
#2 mi_switch+0x3d3 sys/kern/sched_bsd.c:416
#3 sleep_finish+0x198 sys/kern/kern_synch.c:433
#4 tsleep+0x12c sys/kern/kern_synch.c:158
#5 biowait+0x91 sys/kern/vfs_bio.c:1271
#6 bwrite+0x21b sys/kern/vfs_bio.c:772
#7 VOP_BWRITE+0x4a sys/kern/vfs_vops.c:656
#8 ufs_direnter+0x8fa sys/ufs/ufs/ufs_lookup.c:909
#9 ufs_makeinode+0x4cc sys/ufs/ufs/ufs_vnops.c:1868
#10 ufs_symlink+0x47 sys/ufs/ufs/ufs_vnops.c:1382
#11 VOP_SYMLINK+0xd0 sys/kern/vfs_vops.c:442
#12 dosymlinkat+0x154 sys/kern/vfs_syscalls.c:1804
#13 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#13 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#14 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd806eb214e0)
#0 witness_lock+0x44d
#1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461
#3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534
#4 vn_lock+0x84 sys/kern/vfs_vnops.c:579
#5 vget+0x1d3 sys/kern/vfs_subr.c:677
#6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119
#7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1318
#8 ffs_inode_alloc+0x1be sys/ufs/ffs/ffs_alloc.c:394
#9 ufs_makeinode+0xae sys/ufs/ufs/ufs_vnops.c:1830
#10 ufs_symlink+0x47 sys/ufs/ufs/ufs_vnops.c:1382
#11 VOP_SYMLINK+0xd0 sys/kern/vfs_vops.c:442
#12 dosymlinkat+0x154 sys/kern/vfs_syscalls.c:1804
#13 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#13 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#14 Xsyscall+0x128
Process 6485 (syz-executor.4) thread 0xffff80002116b7a0 (355003)
exclusive rrwlock inode r = 0 (0xfffffd806eb212c0)
#0 witness_lock+0x44d
#1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461
#3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534
#4 ufs_ihashins+0x42 sys/ufs/ufs/ufs_ihash.c:140
#5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1347
#6 ffs_inode_alloc+0x1be sys/ufs/ffs/ffs_alloc.c:394
#7 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1162
#8 VOP_MKDIR+0xbf sys/kern/vfs_vops.c:404
#9 domkdirat+0x121 sys/kern/vfs_syscalls.c:3101
#10 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#10 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#11 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd8068eff2b8)
#0 witness_lock+0x44d
#1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461
#3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534
#4 vn_lock+0x84 sys/kern/vfs_vnops.c:579
#5 vfs_lookup+0xd1 sys/kern/vfs_lookup.c:413
#6 namei+0x36a sys/kern/vfs_lookup.c:245
#7 domkdirat+0x75 sys/kern/vfs_syscalls.c:3086
#8 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#8 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#9 Xsyscall+0x128
Process 81503 (syz-executor.1) thread 0xffff80002116bce0 (55489)
exclusive rrwlock inode r = 0 (0xfffffd80677a3a38)
#0 witness_lock+0x44d
#1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461
#3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534
#4 vn_lock+0x84 sys/kern/vfs_vnops.c:579
#5 vget+0x1d3 sys/kern/vfs_subr.c:677
#6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119
#7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1318
#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:561
#11 namei+0x36a sys/kern/vfs_lookup.c:245
#12 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1850
#13 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#13 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#14 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd8068effb38)
#0 witness_lock+0x44d
#1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461
#3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534
#4 vn_lock+0x84 sys/kern/vfs_vnops.c:579
#5 vfs_lookup+0xd1 sys/kern/vfs_lookup.c:413
#6 namei+0x36a sys/kern/vfs_lookup.c:245
#7 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1850
#8 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#8 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#9 Xsyscall+0x128
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10201 6411K 6419K 78643K 11305 0
pcb 13 12K 14K 78643K 17 0
rtable 248 7K 7K 78643K 536 0
ifaddr 81 16K 16K 78643K 110 0
sysctl 2 0K 0K 78643K 2 0
counters 56 35K 35K 78643K 64 0
ioctlops 0 0K 2K 78643K 94 0
iov 0 0K 12K 78643K 433 0
mount 1 1K 1K 78643K 1 0
log 0 0K 0K 78643K 5 0
vnodes 1270 79K 79K 78643K 1845 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 5K 78643K 19 0
VM map 2 1K 1K 78643K 2 0
sem 12 0K 0K 78643K 906 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1697 195K 286K 78643K 12548 0
file desc 23 85K 125K 78643K 2807 0
sigio 0 0K 0K 78643K 16 0
proc 56 74K 99K 78643K 768 0
subproc 104 6K 6K 78643K 156 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 378 0
in_multi 99 6K 6K 78643K 177 0
ether_multi 1 0K 0K 78643K 18 0
mrt 2 0K 0K 78643K 3 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 223 996K 996K 78643K 223 0
exec 0 0K 2K 78643K 1046 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 7 26K 26K 78643K 7 0
UVM amap 374 95K 108K 78643K 37537 0
UVM aobj 52 6K 6K 78643K 52 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 93 0
NDP 11 0K 2K 78643K 39 0
temp 125 4703K 4767K 78643K 10643 0
kqueue 12 18K 26K 78643K 309 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 120 119 0 116 1 0 1 1 0 8 0
rtentry 112 161 0 46 4 0 4 4 0 8 0
unpcb 136 2652 0 2573 23 20 3 6 0 8 0
syncache 296 31 0 31 6 5 1 1 0 8 1
tcpqe 32 6 0 6 3 3 0 1 0 8 0
tcpcb 736 1328 0 1305 40 34 6 17 0 8 3
arp 120 27 0 8 1 0 1 1 0 8 0
ipq 40 1 0 1 1 1 0 1 0 8 0
ipqe 40 5 0 5 1 1 0 1 0 8 0
inpcb 304 5676 0 5563 42 32 10 15 0 8 1
ip6q 72 18 0 18 1 1 0 1 0 8 0
ip6af 40 35 0 35 1 1 0 1 0 8 0
nd6 48 41 0 13 1 0 1 1 0 8 0
kcovpl 48 12 0 4 1 0 1 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 638 0 177 29 0 29 29 0 8 0
art_table 32 639 0 177 4 0 4 4 0 8 0
art_node 16 160 0 55 1 0 1 1 0 8 0
sysvmsgpl 40 27 0 6 2 1 1 1 0 8 0
semapl 112 904 0 894 1 0 1 1 0 8 0
shmpl 112 49 0 0 2 0 2 2 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 5037 0 3606 91 0 91 91 0 8 0
ffsino 272 5037 0 3606 97 0 97 97 0 8 0
nchpl 144 8770 0 7146 62 0 62 62 0 8 0
uvmvnodes 80 5202 0 0 107 0 107 107 0 8 0
vnodes 224 5202 0 0 306 0 306 306 0 8 0
namei 1024 29768 0 29765 2 1 1 2 0 8 0
percpumem 16 44 0 4 1 0 1 1 0 8 0
scxspl 216 25267 0 25265 16 14 2 8 0 8 1
plimitpl 152 338 0 316 1 0 1 1 0 8 0
sigapl 424 3075 0 3025 7 1 6 7 0 8 0
futexpl 64 24140 0 24139 1 0 1 1 0 8 0
knotepl 120 216 0 0 6 0 6 6 0 8 0
kqueuepl 216 1178 0 1169 21 16 5 5 0 8 4
pipepl 336 990 0 962 23 17 6 8 0 8 3
fdescpl 496 3060 0 3026 6 1 5 6 0 8 0
filepl 152 22904 0 22502 43 27 16 19 0 8 0
lockfpl 104 520 0 518 1 0 1 1 0 8 0
lockfspl 48 187 0 185 1 0 1 1 0 8 0
sessionpl 144 27 0 11 1 0 1 1 0 8 0
pgrppl 48 119 0 103 1 0 1 1 0 8 0
ucredpl 96 2971 0 2953 1 0 1 1 0 8 0
zombiepl 144 3026 0 3025 1 0 1 1 0 8 0
processpl 1064 3075 0 3025 4 0 4 4 0 8 0
procpl 672 8507 0 8442 9 2 7 8 0 8 0
sosppl 168 26 0 26 5 4 1 1 0 8 1
sockpl 480 8694 0 8501 180 155 25 34 0 8 0
mcl64k 65536 23 0 0 3 0 3 3 0 8 0
mcl16k 16384 12 0 0 2 0 2 2 0 8 0
mcl12k 12288 17 0 0 2 0 2 2 0 8 0
mcl9k 9216 10 0 0 1 0 1 1 0 8 0
mcl8k 8192 25 0 0 3 0 3 3 0 8 0
mcl4k 4096 17 0 0 3 0 3 3 0 8 0
mcl2k2 2112 5 0 0 1 0 1 1 0 8 0
mcl2k 2048 165 0 0 18 1 17 18 0 8 0
mtagpl 96 3 0 0 1 0 1 1 0 8 0
mbufpl 256 355 0 0 18 0 18 18 0 8 0
bufpl 288 8232 0 1897 453 0 453 453 0 8 0
anonpl 24 855018 0 840386 186 53 133 133 0 186 26
amapchunkpl 152 104397 0 103556 66 29 37 50 0 158 1
amappl16 200 9608 0 9264 90 62 28 44 0 8 8
amappl15 192 437 0 429 1 0 1 1 0 8 0
amappl14 184 12 0 8 1 0 1 1 0 8 0
amappl13 176 103 0 102 1 0 1 1 0 8 0
amappl12 168 1039 0 1031 1 0 1 1 0 8 0
amappl11 160 701 0 682 1 0 1 1 0 8 0
amappl10 152 52 0 45 1 0 1 1 0 8 0
amappl9 144 1114 0 1107 1 0 1 1 0 8 0
amappl8 136 725 0 642 3 0 3 3 0 8 0
amappl7 128 131 0 119 1 0 1 1 0 8 0
amappl6 120 866 0 840 2 1 1 2 0 8 0
amappl5 112 2404 0 2385 1 0 1 1 0 8 0
amappl4 104 1942 0 1908 1 0 1 1 0 8 0
amappl3 96 1390 0 1373 1 0 1 1 0 8 0
amappl2 88 1114 0 1066 3 1 2 3 0 8 0
amappl1 80 58470 0 57845 23 9 14 18 0 8 0
amappl 88 36949 0 36679 8 0 8 8 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 51 0 0 1 0 1 1 0 8 0
uaddrrnd 24 3060 0 3026 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 3060 0 3026 1 0 1 1 0 8 0
vmmpekpl 168 30222 0 30178 3 0 3 3 0 8 0
vmmpepl 168 285230 0 282660 184 46 138 138 0 357 16
vmsppl 368 3059 0 3026 4 0 4 4 0 8 0
rwobjpl 56 76820 0 70238 97 0 97 97 0 8 1
pdppl 4096 6127 0 6052 158 77 81 95 0 8 6
pvpl 32 1493810 0 1473982 304 85 219 239 0 265 36
pmappl 248 3059 0 3026 3 0 3 3 0 8 0
extentpl 40 58 0 38 1 0 1 1 0 8 0
phpool 112 951 0 132 24 0 24 24 0 8 0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
proc_trampoline() at proc_trampoline+0xdc
end of kernel
end trace frame: 0x7f7ffffbbb50, count: -1
ddb{0}> machine ddbcpu 1
Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp
x86_ipi_db(ffff800020ce8ff0) 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_write_1(3f8,0,2d) at x86_bus_space_io_write_1+0x31 sys/arch/amd64/amd64/bus_space.c:759
comcnputc(800,2d) at comcnputc+0x128 bus_space_barrier machine/bus.h:481 [inline]
comcnputc(800,2d) at comcnputc+0x128 sys/dev/ic/com.c:1263
cnputc(2d) at cnputc+0x4b sys/dev/cons.c:239
db_putchar(2d) at db_putchar+0x3fc sys/ddb/db_output.c:155
kprintf() at kprintf+0x20ec sys/kern/subr_prf.c:1068
db_printf(ffffffff82627876) at db_printf+0x85 sys/kern/subr_prf.c:502
fault(ffffffff825d5252) at fault+0x95 sys/arch/amd64/amd64/trap.c:154
kpageflttrap(ffff800027b479b0,8) at kpageflttrap+0x25a sys/arch/amd64/amd64/trap.c:275
kerntrap(ffff800027b479b0) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:318
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
fifo_write(ffff800027b47ab0) at fifo_write+0x4e sys/miscfs/fifofs/fifo_vnops.c:271
end trace frame: 0xffff800027b47b20, count: 0
ddb{1}> trace
x86_ipi_db(ffff800020ce8ff0) 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_write_1(3f8,0,2d) at x86_bus_space_io_write_1+0x31 sys/arch/amd64/amd64/bus_space.c:759
comcnputc(800,2d) at comcnputc+0x128 bus_space_barrier machine/bus.h:481 [inline]
comcnputc(800,2d) at comcnputc+0x128 sys/dev/ic/com.c:1263
cnputc(2d) at cnputc+0x4b sys/dev/cons.c:239
db_putchar(2d) at db_putchar+0x3fc sys/ddb/db_output.c:155
kprintf() at kprintf+0x20ec sys/kern/subr_prf.c:1068
db_printf(ffffffff82627876) at db_printf+0x85 sys/kern/subr_prf.c:502
fault(ffffffff825d5252) at fault+0x95 sys/arch/amd64/amd64/trap.c:154
kpageflttrap(ffff800027b479b0,8) at kpageflttrap+0x25a sys/arch/amd64/amd64/trap.c:275
kerntrap(ffff800027b479b0) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:318
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
fifo_write(ffff800027b47ab0) at fifo_write+0x4e sys/miscfs/fifofs/fifo_vnops.c:271
VOP_WRITE(fffffd8079edad50,ffff800027b47b48,8,fffffd807f7d87e0) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245
vn_rdwr(1,fffffd8079edad50,ffff800021161800,ae,0,1,29fe8821b3e0b619,ffff800027b47c70,fffffd8079edad50,78) at vn_rdwr+0xe9 sys/kern/vfs_vnops.c:330
ufs_symlink(ffff800027b47c70) at ufs_symlink+0x142 sys/ufs/ufs/ufs_vnops.c:1398
VOP_SYMLINK(fffffd8079eda570,ffff800027b47df0,ffff800027b47e20,ffff800027b47d20,ffff800021161800) at VOP_SYMLINK+0xd0 sys/kern/vfs_vops.c:442
dosymlinkat(ffff800027b27a50,200000c0,5,20d06ff8) at dosymlinkat+0x154 sys/kern/vfs_syscalls.c:1804
syscall(ffff800027b47fa0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff800027b47fa0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xa63ddfab00, count: -21
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot found the following issue on:
HEAD commit: 7831279e5843 Move prototypes for checklabel(), readlabel()..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=12b5be02700000
kernel config: https://syzkaller.appspot.com/x/.config?x=bf87b6915a88cd0d
dashboard link: https://syzkaller.appspot.com/bug?extid=8b6d073735f11e92c455
Unfortunately, I don't have any reproducer for this issue yet.
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+8b6d07...@syzkaller.appspotmail.com
*cpu1: uvm_fault(0xfffffd80762b4e70, 0x8, 0, 1) -> e
ddb{0}> trace
proc_trampoline() at proc_trampoline+0xdc
end of kernel
end trace frame: 0x7f7ffffbbb50, count: -1
ddb{0}> show registers
rdi 0
rsi 0
rbp 0xffff800027af88b0
rbx 0
rdx 0
rcx 0
rax 0x2a
r8 0xffff800027af87e0
r9 0
r10 0x28c77be3160478e3
r11 0x285c900cf82ec285
r12 0
r13 0
r14 0
r15 0
rip 0xffffffff823af50c proc_trampoline+0xdc
cs 0x8
rflags 0x246
rsp 0xffff800027af8830
ss 0
proc_trampoline+0xdc: movl $0,%gs:0x538
ddb{0}> show proc
PROC (syz-executor.3) pid=427184 stat=onproc
flags process=10<SUGID> proc=0
pri=81, usrpri=81, nice=20
forw=0xffffffffffffffff, list=0xffff8000ffff5ce8,0xffff8000ffff4a98
process=0xffff80002116d900 user=0xffff800027af3000, vmspace=0xfffffd8066a59e78
estcpu=36, cpticks=1, pctcpu=0.0
user=0, sys=1, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
*31165 427184 58708 32767 7 0x10 syz-executor.3
69192 346612 75684 32767 3 0x90 nanoslp syz-executor.2
69192 358861 75684 32767 3 0x4000090 fsleep syz-executor.2
69192 305775 75684 32767 2 0x4000010 syz-executor.2
54042 183253 75116 32767 2 0x10 syz-executor.0
54042 97026 75116 32767 3 0x4000090 netio syz-executor.0
81157 503514 35466 32767 2 0x10 syz-executor.5
81157 162630 35466 32767 7 0x4000010 syz-executor.5
81157 177708 35466 32767 2 0x4000010 syz-executor.5
84736 317076 64605 32767 3 0x90 nanoslp syz-executor.6
84736 297946 64605 32767 3 0x4000090 netio syz-executor.6
64605 197691 1482 32767 3 0x90 nanoslp syz-executor.6
1482 187718 14402 0 3 0x82 wait syz-executor.6
58708 249590 10888 32767 3 0x90 nanoslp syz-executor.3
10888 200213 14402 0 3 0x82 wait syz-executor.3
35466 106751 61194 32767 3 0x90 nanoslp syz-executor.5
61194 144873 14402 0 3 0x82 wait syz-executor.5
91180 414768 0 0 3 0x14200 bored sosplice
67420 188154 46010 32767 3 0x90 nanoslp syz-executor.7
46010 198247 14402 0 3 0x82 wait syz-executor.7
6485 355003 13990 32767 3 0x10 biowait syz-executor.4
13990 108634 14402 0 3 0x82 wait syz-executor.4
81503 55489 26425 32767 3 0x10 biowait syz-executor.1
75684 247753 79867 32767 3 0x90 nanoslp syz-executor.2
79867 14925 14402 0 3 0x82 wait syz-executor.2
26425 221526 14402 0 3 0x82 wait syz-executor.1
75116 317015 61496 32767 3 0x90 nanoslp syz-executor.0
61496 432654 14402 0 3 0x82 wait syz-executor.0
14402 52454 94740 0 3 0x82 thrsleep syz-fuzzer
14402 121786 94740 0 3 0x4000082 nanoslp syz-fuzzer
14402 121645 94740 0 3 0x4000082 thrsleep syz-fuzzer
14402 241420 94740 0 3 0x4000082 thrsleep syz-fuzzer
14402 218983 94740 0 3 0x4000082 kqread syz-fuzzer
14402 159364 94740 0 3 0x4000082 thrsleep syz-fuzzer
14402 521264 94740 0 3 0x4000082 thrsleep syz-fuzzer
14402 405421 94740 0 3 0x4000082 thrsleep syz-fuzzer
14402 26459 94740 0 3 0x4000082 thrsleep syz-fuzzer
14402 318084 94740 0 3 0x4000082 nanoslp syz-fuzzer
94740 247027 99308 0 3 0x10008a sigsusp ksh
99308 86165 85791 0 3 0x9a kqread sshd
45430 284632 1 0 3 0x100083 ttyin getty
85791 518851 1 0 3 0x88 kqread sshd
14026 243337 56893 73 3 0x1100090 kqread syslogd
56893 188294 1 0 3 0x100082 netio syslogd
56909 522565 1 0 3 0x100080 kqread resolvd
68651 292639 33520 77 3 0x100092 kqread dhcpleased
67478 369178 33520 77 3 0x100092 kqread dhcpleased
33520 72940 1 0 3 0x80 kqread dhcpleased
7673 337117 0 0 3 0x14200 bored smr
9444 192621 0 0 2 0x14200 zerothread
19557 389833 0 0 3 0x14200 aiodoned aiodoned
18086 132024 0 0 3 0x14200 syncer update
66165 207445 0 0 3 0x14200 cleaner cleaner
50542 60743 0 0 3 0x14200 reaper reaper
30828 106397 0 0 3 0x14200 pgdaemon pagedaemon
18510 163107 0 0 3 0x14200 bored viomb
86737 121181 0 0 3 0x40014200 acpi0 acpi0
32059 168564 0 0 3 0x40014200 idle1
36604 407328 0 0 3 0x14200 bored softnet
25588 462766 0 0 3 0x14200 bored systqmp
93095 77108 0 0 3 0x14200 bored systq
29081 340144 0 0 3 0x40014200 bored softclock
77281 12267 0 0 3 0x40014200 idle0
1 384419 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
CPU 0:
exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806a90eac8)
#0 witness_lock+0x44d
#1 mtx_enter_try+0x100
#2 mtx_enter+0x4b sys/kern/kern_lock.c:266
#3 pmap_extract+0xa2 sys/arch/amd64/amd64/pmap.c:1517
#4 uvm_fault_upper_lookup+0x129 sys/uvm/uvm_fault.c:852
#5 uvm_fault+0x139 sys/uvm/uvm_fault.c:607
#6 upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181
#7 usertrap+0x1aa sys/arch/amd64/amd64/trap.c:403
#8 recall_trap+0x8
Process 31165 (syz-executor.3) thread 0xffff8000ffff5508 (427184)
exclusive rwlock amaplk r = 0 (0xfffffd80679e5128)
#0 witness_lock+0x44d
#1 uvm_fault_check+0x3ca sys/uvm/uvm_fault.c:774
#2 uvm_fault+0x102 sys/uvm/uvm_fault.c:602
#3 upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181
#4 usertrap+0x1aa sys/arch/amd64/amd64/trap.c:403
#5 recall_trap+0x8
shared rwlock vmmaplk r = 0 (0xfffffd8066a59e90)
#0 witness_lock+0x44d
#1 uvmfault_lookup+0xd9 sys/uvm/uvm_fault.c:1758
#2 uvm_fault_check+0x3a sys/uvm/uvm_fault.c:674
#3 uvm_fault+0x102 sys/uvm/uvm_fault.c:602
#4 upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181
#5 usertrap+0x1aa sys/arch/amd64/amd64/trap.c:403
#6 recall_trap+0x8
exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806a90eac8)
#0 witness_lock+0x44d
#1 mtx_enter_try+0x100
#2 mtx_enter+0x4b sys/kern/kern_lock.c:266
#3 pmap_extract+0xa2 sys/arch/amd64/amd64/pmap.c:1517
#4 uvm_fault_upper_lookup+0x129 sys/uvm/uvm_fault.c:852
#5 uvm_fault+0x139 sys/uvm/uvm_fault.c:607
#6 upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181
#7 usertrap+0x1aa sys/arch/amd64/amd64/trap.c:403
#8 recall_trap+0x8
Process 81157 (syz-executor.5) thread 0xffff800027b27a50 (162630)
exclusive kernel_lock &kernel_lock r = 1 (0xffffffff829b2b50)
#0 witness_lock+0x44d
#1 __mp_acquire_count+0x48 sys/kern/kern_lock.c:227
#2 mi_switch+0x3d3 sys/kern/sched_bsd.c:416
#3 sleep_finish+0x198 sys/kern/kern_synch.c:433
#4 tsleep+0x12c sys/kern/kern_synch.c:158
#5 biowait+0x91 sys/kern/vfs_bio.c:1271
#6 bwrite+0x21b sys/kern/vfs_bio.c:772
#7 VOP_BWRITE+0x4a sys/kern/vfs_vops.c:656
#8 ufs_direnter+0x8fa sys/ufs/ufs/ufs_lookup.c:909
#9 ufs_makeinode+0x4cc sys/ufs/ufs/ufs_vnops.c:1868
#10 ufs_symlink+0x47 sys/ufs/ufs/ufs_vnops.c:1382
#11 VOP_SYMLINK+0xd0 sys/kern/vfs_vops.c:442
#12 dosymlinkat+0x154 sys/kern/vfs_syscalls.c:1804
#13 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#13 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#14 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd806eb214e0)
#0 witness_lock+0x44d
#1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461
#3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534
#4 vn_lock+0x84 sys/kern/vfs_vnops.c:579
#5 vget+0x1d3 sys/kern/vfs_subr.c:677
#6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119
#7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1318
#8 ffs_inode_alloc+0x1be sys/ufs/ffs/ffs_alloc.c:394
#9 ufs_makeinode+0xae sys/ufs/ufs/ufs_vnops.c:1830
#10 ufs_symlink+0x47 sys/ufs/ufs/ufs_vnops.c:1382
#11 VOP_SYMLINK+0xd0 sys/kern/vfs_vops.c:442
#12 dosymlinkat+0x154 sys/kern/vfs_syscalls.c:1804
#13 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#13 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#14 Xsyscall+0x128
Process 6485 (syz-executor.4) thread 0xffff80002116b7a0 (355003)
exclusive rrwlock inode r = 0 (0xfffffd806eb212c0)
#0 witness_lock+0x44d
#1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461
#3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534
#4 ufs_ihashins+0x42 sys/ufs/ufs/ufs_ihash.c:140
#5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1347
#6 ffs_inode_alloc+0x1be sys/ufs/ffs/ffs_alloc.c:394
#7 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1162
#8 VOP_MKDIR+0xbf sys/kern/vfs_vops.c:404
#9 domkdirat+0x121 sys/kern/vfs_syscalls.c:3101
#10 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#10 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#11 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd8068eff2b8)
#0 witness_lock+0x44d
#1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461
#3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534
#4 vn_lock+0x84 sys/kern/vfs_vnops.c:579
#5 vfs_lookup+0xd1 sys/kern/vfs_lookup.c:413
#6 namei+0x36a sys/kern/vfs_lookup.c:245
#7 domkdirat+0x75 sys/kern/vfs_syscalls.c:3086
#8 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#8 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#9 Xsyscall+0x128
Process 81503 (syz-executor.1) thread 0xffff80002116bce0 (55489)
exclusive rrwlock inode r = 0 (0xfffffd80677a3a38)
#0 witness_lock+0x44d
#1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461
#3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534
#4 vn_lock+0x84 sys/kern/vfs_vnops.c:579
#5 vget+0x1d3 sys/kern/vfs_subr.c:677
#6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119
#7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1318
#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:561
#11 namei+0x36a sys/kern/vfs_lookup.c:245
#12 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1850
#13 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#13 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#14 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd8068effb38)
#0 witness_lock+0x44d
#1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461
#3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534
#4 vn_lock+0x84 sys/kern/vfs_vnops.c:579
#5 vfs_lookup+0xd1 sys/kern/vfs_lookup.c:413
#6 namei+0x36a sys/kern/vfs_lookup.c:245
#7 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1850
#8 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#8 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#9 Xsyscall+0x128
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10201 6411K 6419K 78643K 11305 0
pcb 13 12K 14K 78643K 17 0
rtable 248 7K 7K 78643K 536 0
ifaddr 81 16K 16K 78643K 110 0
sysctl 2 0K 0K 78643K 2 0
counters 56 35K 35K 78643K 64 0
ioctlops 0 0K 2K 78643K 94 0
iov 0 0K 12K 78643K 433 0
mount 1 1K 1K 78643K 1 0
log 0 0K 0K 78643K 5 0
vnodes 1270 79K 79K 78643K 1845 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 5K 78643K 19 0
VM map 2 1K 1K 78643K 2 0
sem 12 0K 0K 78643K 906 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1697 195K 286K 78643K 12548 0
file desc 23 85K 125K 78643K 2807 0
sigio 0 0K 0K 78643K 16 0
proc 56 74K 99K 78643K 768 0
subproc 104 6K 6K 78643K 156 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 378 0
in_multi 99 6K 6K 78643K 177 0
ether_multi 1 0K 0K 78643K 18 0
mrt 2 0K 0K 78643K 3 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 223 996K 996K 78643K 223 0
exec 0 0K 2K 78643K 1046 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 7 26K 26K 78643K 7 0
UVM amap 374 95K 108K 78643K 37537 0
UVM aobj 52 6K 6K 78643K 52 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 93 0
NDP 11 0K 2K 78643K 39 0
temp 125 4703K 4767K 78643K 10643 0
kqueue 12 18K 26K 78643K 309 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 120 119 0 116 1 0 1 1 0 8 0
rtentry 112 161 0 46 4 0 4 4 0 8 0
unpcb 136 2652 0 2573 23 20 3 6 0 8 0
syncache 296 31 0 31 6 5 1 1 0 8 1
tcpqe 32 6 0 6 3 3 0 1 0 8 0
tcpcb 736 1328 0 1305 40 34 6 17 0 8 3
arp 120 27 0 8 1 0 1 1 0 8 0
ipq 40 1 0 1 1 1 0 1 0 8 0
ipqe 40 5 0 5 1 1 0 1 0 8 0
inpcb 304 5676 0 5563 42 32 10 15 0 8 1
ip6q 72 18 0 18 1 1 0 1 0 8 0
ip6af 40 35 0 35 1 1 0 1 0 8 0
nd6 48 41 0 13 1 0 1 1 0 8 0
kcovpl 48 12 0 4 1 0 1 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 638 0 177 29 0 29 29 0 8 0
art_table 32 639 0 177 4 0 4 4 0 8 0
art_node 16 160 0 55 1 0 1 1 0 8 0
sysvmsgpl 40 27 0 6 2 1 1 1 0 8 0
semapl 112 904 0 894 1 0 1 1 0 8 0
shmpl 112 49 0 0 2 0 2 2 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 5037 0 3606 91 0 91 91 0 8 0
ffsino 272 5037 0 3606 97 0 97 97 0 8 0
nchpl 144 8770 0 7146 62 0 62 62 0 8 0
uvmvnodes 80 5202 0 0 107 0 107 107 0 8 0
vnodes 224 5202 0 0 306 0 306 306 0 8 0
namei 1024 29768 0 29765 2 1 1 2 0 8 0
percpumem 16 44 0 4 1 0 1 1 0 8 0
scxspl 216 25267 0 25265 16 14 2 8 0 8 1
plimitpl 152 338 0 316 1 0 1 1 0 8 0
sigapl 424 3075 0 3025 7 1 6 7 0 8 0
futexpl 64 24140 0 24139 1 0 1 1 0 8 0
knotepl 120 216 0 0 6 0 6 6 0 8 0
kqueuepl 216 1178 0 1169 21 16 5 5 0 8 4
pipepl 336 990 0 962 23 17 6 8 0 8 3
fdescpl 496 3060 0 3026 6 1 5 6 0 8 0
filepl 152 22904 0 22502 43 27 16 19 0 8 0
lockfpl 104 520 0 518 1 0 1 1 0 8 0
lockfspl 48 187 0 185 1 0 1 1 0 8 0
sessionpl 144 27 0 11 1 0 1 1 0 8 0
pgrppl 48 119 0 103 1 0 1 1 0 8 0
ucredpl 96 2971 0 2953 1 0 1 1 0 8 0
zombiepl 144 3026 0 3025 1 0 1 1 0 8 0
processpl 1064 3075 0 3025 4 0 4 4 0 8 0
procpl 672 8507 0 8442 9 2 7 8 0 8 0
sosppl 168 26 0 26 5 4 1 1 0 8 1
sockpl 480 8694 0 8501 180 155 25 34 0 8 0
mcl64k 65536 23 0 0 3 0 3 3 0 8 0
mcl16k 16384 12 0 0 2 0 2 2 0 8 0
mcl12k 12288 17 0 0 2 0 2 2 0 8 0
mcl9k 9216 10 0 0 1 0 1 1 0 8 0
mcl8k 8192 25 0 0 3 0 3 3 0 8 0
mcl4k 4096 17 0 0 3 0 3 3 0 8 0
mcl2k2 2112 5 0 0 1 0 1 1 0 8 0
mcl2k 2048 165 0 0 18 1 17 18 0 8 0
mtagpl 96 3 0 0 1 0 1 1 0 8 0
mbufpl 256 355 0 0 18 0 18 18 0 8 0
bufpl 288 8232 0 1897 453 0 453 453 0 8 0
anonpl 24 855018 0 840386 186 53 133 133 0 186 26
amapchunkpl 152 104397 0 103556 66 29 37 50 0 158 1
amappl16 200 9608 0 9264 90 62 28 44 0 8 8
amappl15 192 437 0 429 1 0 1 1 0 8 0
amappl14 184 12 0 8 1 0 1 1 0 8 0
amappl13 176 103 0 102 1 0 1 1 0 8 0
amappl12 168 1039 0 1031 1 0 1 1 0 8 0
amappl11 160 701 0 682 1 0 1 1 0 8 0
amappl10 152 52 0 45 1 0 1 1 0 8 0
amappl9 144 1114 0 1107 1 0 1 1 0 8 0
amappl8 136 725 0 642 3 0 3 3 0 8 0
amappl7 128 131 0 119 1 0 1 1 0 8 0
amappl6 120 866 0 840 2 1 1 2 0 8 0
amappl5 112 2404 0 2385 1 0 1 1 0 8 0
amappl4 104 1942 0 1908 1 0 1 1 0 8 0
amappl3 96 1390 0 1373 1 0 1 1 0 8 0
amappl2 88 1114 0 1066 3 1 2 3 0 8 0
amappl1 80 58470 0 57845 23 9 14 18 0 8 0
amappl 88 36949 0 36679 8 0 8 8 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 51 0 0 1 0 1 1 0 8 0
uaddrrnd 24 3060 0 3026 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 3060 0 3026 1 0 1 1 0 8 0
vmmpekpl 168 30222 0 30178 3 0 3 3 0 8 0
vmmpepl 168 285230 0 282660 184 46 138 138 0 357 16
vmsppl 368 3059 0 3026 4 0 4 4 0 8 0
rwobjpl 56 76820 0 70238 97 0 97 97 0 8 1
pdppl 4096 6127 0 6052 158 77 81 95 0 8 6
pvpl 32 1493810 0 1473982 304 85 219 239 0 265 36
pmappl 248 3059 0 3026 3 0 3 3 0 8 0
extentpl 40 58 0 38 1 0 1 1 0 8 0
phpool 112 951 0 132 24 0 24 24 0 8 0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
proc_trampoline() at proc_trampoline+0xdc
end of kernel
end trace frame: 0x7f7ffffbbb50, count: -1
ddb{0}> machine ddbcpu 1
Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp
x86_ipi_db(ffff800020ce8ff0) 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_write_1(3f8,0,2d) at x86_bus_space_io_write_1+0x31 sys/arch/amd64/amd64/bus_space.c:759
comcnputc(800,2d) at comcnputc+0x128 bus_space_barrier machine/bus.h:481 [inline]
comcnputc(800,2d) at comcnputc+0x128 sys/dev/ic/com.c:1263
cnputc(2d) at cnputc+0x4b sys/dev/cons.c:239
db_putchar(2d) at db_putchar+0x3fc sys/ddb/db_output.c:155
kprintf() at kprintf+0x20ec sys/kern/subr_prf.c:1068
db_printf(ffffffff82627876) at db_printf+0x85 sys/kern/subr_prf.c:502
fault(ffffffff825d5252) at fault+0x95 sys/arch/amd64/amd64/trap.c:154
kpageflttrap(ffff800027b479b0,8) at kpageflttrap+0x25a sys/arch/amd64/amd64/trap.c:275
kerntrap(ffff800027b479b0) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:318
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
fifo_write(ffff800027b47ab0) at fifo_write+0x4e sys/miscfs/fifofs/fifo_vnops.c:271
end trace frame: 0xffff800027b47b20, count: 0
ddb{1}> trace
x86_ipi_db(ffff800020ce8ff0) 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_write_1(3f8,0,2d) at x86_bus_space_io_write_1+0x31 sys/arch/amd64/amd64/bus_space.c:759
comcnputc(800,2d) at comcnputc+0x128 bus_space_barrier machine/bus.h:481 [inline]
comcnputc(800,2d) at comcnputc+0x128 sys/dev/ic/com.c:1263
cnputc(2d) at cnputc+0x4b sys/dev/cons.c:239
db_putchar(2d) at db_putchar+0x3fc sys/ddb/db_output.c:155
kprintf() at kprintf+0x20ec sys/kern/subr_prf.c:1068
db_printf(ffffffff82627876) at db_printf+0x85 sys/kern/subr_prf.c:502
fault(ffffffff825d5252) at fault+0x95 sys/arch/amd64/amd64/trap.c:154
kpageflttrap(ffff800027b479b0,8) at kpageflttrap+0x25a sys/arch/amd64/amd64/trap.c:275
kerntrap(ffff800027b479b0) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:318
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
fifo_write(ffff800027b47ab0) at fifo_write+0x4e sys/miscfs/fifofs/fifo_vnops.c:271
VOP_WRITE(fffffd8079edad50,ffff800027b47b48,8,fffffd807f7d87e0) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245
vn_rdwr(1,fffffd8079edad50,ffff800021161800,ae,0,1,29fe8821b3e0b619,ffff800027b47c70,fffffd8079edad50,78) at vn_rdwr+0xe9 sys/kern/vfs_vnops.c:330
ufs_symlink(ffff800027b47c70) at ufs_symlink+0x142 sys/ufs/ufs/ufs_vnops.c:1398
VOP_SYMLINK(fffffd8079eda570,ffff800027b47df0,ffff800027b47e20,ffff800027b47d20,ffff800021161800) at VOP_SYMLINK+0xd0 sys/kern/vfs_vops.c:442
dosymlinkat(ffff800027b27a50,200000c0,5,20d06ff8) at dosymlinkat+0x154 sys/kern/vfs_syscalls.c:1804
syscall(ffff800027b47fa0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff800027b47fa0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xa63ddfab00, count: -21
---
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