witness: reversal: pf_lock netlock (2)
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syzbot
Apr 8, 2022, 11:01:20 PM4/8/22
to syzkaller-o...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 6497b0ad1c46 When calculating the with of spanned columns,..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=15d57467700000
kernel config: https://syzkaller.appspot.com/x/.config?x=bf87b6915a88cd0d
dashboard link: https://syzkaller.appspot.com/bug?extid=2945769fc3e6fd9ee413
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+294576...@syzkaller.appspotmail.com
witness: lock order reversal:
1st 0xffffffff828fc2c0 pf_lock (pf_lock)
2nd 0xffffffff82952300 netlock (netlock)
lock order "netlock"(rwlock) -> "pf_lock"(rwlock) first seen at:
#0 rw_enter_write+0x5b sys/kern/kern_rwlock.c:128
#1 pfioctl+0x3fbc sys/net/pf_ioctl.c:2968
#2 VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264
#3 vn_ioctl+0xbc sys/kern/vfs_vnops.c:531
#4 sys_ioctl+0x4a2
#5 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#5 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#6 Xsyscall+0x128
lock order "pf_lock"(rwlock) -> "netlock"(rwlock) first seen at:
#0 rw_enter_write+0x5b sys/kern/kern_rwlock.c:128
#1 uvn_io+0x418 sys/uvm/uvm_vnode.c:1243
#2 uvn_get+0x1df sys/uvm/uvm_vnode.c:1076
#3 uvm_fault_lower+0x36c sys/uvm/uvm_fault.c:1275
#4 uvm_fault+0x248
#5 kpageflttrap+0x209
#6 kerntrap+0xef sys/arch/amd64/amd64/trap.c:318
#7 alltraps_kern_meltdown+0x7b
#8 copyin+0x53
#9 VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264
#10 vn_ioctl+0xbc sys/kern/vfs_vnops.c:531
#11 sys_ioctl+0x4a2
#12 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#12 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#13 Xsyscall+0x128
Stopped at db_enter+0x18: addq $0x8,%rsp
ddb{1}>
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
the kernel did not panic
ddb{1}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440
witness_checkorder(ffffffff82952300,9,0) at witness_checkorder+0x10b7 witness_debugger sys/kern/subr_witness.c:2502 [inline]
witness_checkorder(ffffffff82952300,9,0) at witness_checkorder+0x10b7 sys/kern/subr_witness.c:1105
rw_enter_write(ffffffff829522f0) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128
uvn_io(fffffd8068fdb130,ffff80002e33c3c8,1,202,0) at uvn_io+0x418 sys/uvm/uvm_vnode.c:1243
uvn_get(fffffd8068fdb130,0,ffff80002e33c488,ffff80002e33c458,0,1,1e6f94c85faf33d5,0) at uvn_get+0x1df sys/uvm/uvm_vnode.c:1076
uvm_fault_lower(ffff80002e33c5f0,ffff80002e33c628,ffff80002e33c570,0) at uvm_fault_lower+0x36c sys/uvm/uvm_fault.c:1275
uvm_fault(fffffd806aa02a20,20001000,0,1) at uvm_fault+0x248
kpageflttrap(ffff80002e33c780,20001000) at kpageflttrap+0x209
kerntrap(ffff80002e33c780) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:318
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
copyin() at copyin+0x53
VOP_IOCTL(fffffd806f6898e8,c0104453,ffff80002e33cb70,2,fffffd807f7d8600,ffff8000ffff5ce0) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264
vn_ioctl(fffffd8079b20280,c0104453,ffff80002e33cb70,ffff8000ffff5ce0) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:531
sys_ioctl(ffff8000ffff5ce0,ffff80002e33cc88,ffff80002e33cce0) at sys_ioctl+0x4a2
syscall(ffff80002e33cd50) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff80002e33cd50) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x4afec235520, count: -16
ddb{1}> show registers
rdi 0x3
rsi 0x40000 acpi_pdirpa+0x2be68
rbp 0xffff80002e33c190
rbx 0x3
rdx 0xffff800000c04500
rcx 0
rax 0x3ffff acpi_pdirpa+0x2be67
r8 0xffff80002e33c100
r9 0x8080808080808080
r10 0x6a55b1634caf93ee
r11 0x375038852069a854
r12 0xffffffff82aa0890 w_lodata+0x52960
r13 0
r14 0xffffffff82a8ff30 w_lodata+0x42000
r15 0xfffffd8002f6a780
rip 0xffffffff81d38498 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff80002e33c180
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb{1}> show proc
PROC (syz-executor.4) pid=193463 stat=onproc
flags process=0 proc=4000000<THREAD>
pri=32, usrpri=83, nice=20
forw=0xffffffffffffffff, list=0xffff8000ffff4a80,0xffff800024ea82b8
process=0xffff8000ffff29a8 user=0xffff80002e337000, vmspace=0xfffffd806aa02a20
estcpu=36, cpticks=0, pctcpu=0.0
user=0, sys=0, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
29364 369780 47661 0 2 0 syz-executor.1
29364 118840 47661 0 3 0x4000080 fsleep syz-executor.1
56682 308653 77811 0 2 0 syz-executor.3
56682 308164 77811 0 3 0x4000080 fsleep syz-executor.3
56998 471917 23956 0 2 0 syz-executor.7
56998 126533 23956 0 3 0x4000080 fsleep syz-executor.7
89414 111484 51032 0 2 0 syz-executor.4
*89414 193463 51032 0 7 0x4000000 syz-executor.4
30490 507463 58329 0 2 0 syz-executor.6
30490 386683 58329 0 2 0x4000000 syz-executor.6
45517 461668 36828 0 2 0 syz-executor.5
45517 154905 36828 0 3 0x4000080 fsleep syz-executor.5
77811 212309 25596 0 3 0x82 nanoslp syz-executor.3
23956 262019 25596 0 3 0x82 nanoslp syz-executor.7
58329 102062 25596 0 3 0x82 nanoslp syz-executor.6
51032 352477 25596 0 3 0x82 nanoslp syz-executor.4
36828 17317 25596 0 3 0x82 nanoslp syz-executor.5
58097 147480 0 0 3 0x14200 acct acct
13113 11637 25596 0 3 0x82 nanoslp syz-executor.0
52394 111506 25596 0 3 0x82 nanoslp syz-executor.2
47661 53381 25596 0 3 0x82 nanoslp syz-executor.1
88467 157376 0 0 3 0x14280 nfsidl nfsio
22319 16992 0 0 3 0x14280 nfsidl nfsio
96384 58067 0 0 3 0x14280 nfsidl nfsio
32347 121566 0 0 3 0x14280 nfsidl nfsio
66706 377289 0 0 3 0x14280 nfsidl nfsio
72493 362741 0 0 3 0x14280 nfsidl nfsio
72134 89951 0 0 3 0x14280 nfsidl nfsio
76343 424198 0 0 3 0x14280 nfsidl nfsio
46349 481102 0 0 3 0x14280 nfsidl nfsio
19281 506225 0 0 3 0x14280 nfsidl nfsio
65083 508575 0 0 3 0x14280 nfsidl nfsio
26419 42104 0 0 3 0x14280 nfsidl nfsio
58716 493705 0 0 3 0x14280 nfsidl nfsio
47606 108488 0 0 3 0x14280 nfsidl nfsio
67456 60066 0 0 3 0x14280 nfsidl nfsio
72725 2630 0 0 3 0x14280 nfsidl nfsio
5265 522947 0 0 3 0x14280 nfsidl nfsio
22447 103007 0 0 3 0x14280 nfsidl nfsio
32037 8006 0 0 3 0x14280 nfsidl nfsio
44719 170128 0 0 3 0x14280 nfsidl nfsio
15457 174968 0 0 3 0x14200 bored sosplice
25596 410721 73584 0 3 0x82 thrsleep syz-fuzzer
25596 497189 73584 0 3 0x4000082 thrsleep syz-fuzzer
25596 194665 73584 0 3 0x4000082 kqread syz-fuzzer
25596 432394 73584 0 3 0x4000082 thrsleep syz-fuzzer
25596 193145 73584 0 3 0x4000082 thrsleep syz-fuzzer
25596 180296 73584 0 3 0x4000082 thrsleep syz-fuzzer
25596 454757 73584 0 3 0x4000082 thrsleep syz-fuzzer
25596 181779 73584 0 3 0x4000082 thrsleep syz-fuzzer
25596 454426 73584 0 3 0x4000082 thrsleep syz-fuzzer
73584 238686 43264 0 3 0x10008a sigsusp ksh
43264 413930 82003 0 3 0x9a kqread sshd
145 505987 1 0 3 0x100083 ttyin getty
82003 462029 1 0 3 0x88 kqread sshd
43277 47554 93886 74 3 0x1100092 bpf pflogd
93886 471365 1 0 3 0x80 netio pflogd
76356 120791 29697 73 3 0x1100090 kqread syslogd
29697 238795 1 0 3 0x100082 netio syslogd
47094 146153 1 0 3 0x100080 kqread resolvd
68843 339486 60012 77 3 0x100092 kqread dhcpleased
75098 366172 60012 77 3 0x100092 kqread dhcpleased
60012 467084 1 0 3 0x80 kqread dhcpleased
72632 136442 0 0 3 0x14200 bored smr
54994 382180 0 0 2 0x14200 zerothread
7206 250138 0 0 3 0x14200 aiodoned aiodoned
25144 275015 0 0 3 0x14200 syncer update
97499 124582 0 0 3 0x14200 cleaner cleaner
13266 246744 0 0 7 0x14200 reaper
73480 188219 0 0 3 0x14200 pgdaemon pagedaemon
36192 267233 0 0 3 0x14200 bored viomb
27844 69883 0 0 3 0x40014200 acpi0 acpi0
67483 183920 0 0 3 0x40014200 idle1
26761 329225 0 0 3 0x14200 bored softnet
15017 402570 0 0 3 0x14200 bored systqmp
76255 130169 0 0 3 0x14200 bored systq
46279 376168 0 0 3 0x40014200 bored softclock
58577 313974 0 0 3 0x40014200 idle0
1 193171 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
Process 89414 (syz-executor.4) thread 0xffff8000ffff5ce0 (193463)
exclusive rwlock pf_lock r = 0 (0xffffffff828fc2c0)
#0 witness_lock+0x44d
#1 pfioctl+0x4397
#2 VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264
#3 vn_ioctl+0xbc sys/kern/vfs_vnops.c:531
#4 sys_ioctl+0x4a2
#5 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#5 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#6 Xsyscall+0x128
exclusive rwlock pfioctl_rw r = 0 (0xffffffff828fc320)
#0 witness_lock+0x44d
#1 pfioctl+0x15e sys/net/pf_ioctl.c:1148
#2 VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264
#3 vn_ioctl+0xbc sys/kern/vfs_vnops.c:531
#4 sys_ioctl+0x4a2
#5 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#5 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#6 Xsyscall+0x128
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82aeb288)
#0 witness_lock+0x44d
#1 vn_ioctl+0x41 sys/kern/vfs_vnops.c:514
#2 sys_ioctl+0x4a2
#3 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#3 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#4 Xsyscall+0x128
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10216 6562K 7539K 78643K 49903 0
pcb 13 14K 16K 78643K 606 0
rtable 239 11K 14K 78643K 1797 0
ifaddr 99 21K 23K 78643K 929 0
sysctl 3 1K 1K 78643K 3 0
counters 56 35K 36K 78643K 182 0
ioctlops 0 0K 8K 78643K 5874 0
iov 0 0K 16K 78643K 721 0
mount 1 1K 1K 78643K 1 0
log 0 0K 0K 78643K 5 0
vnodes 1493 93K 94K 78643K 11806 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 5K 78643K 53 0
VM map 2 1K 1K 78643K 2 0
sem 12 0K 0K 78643K 1269 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1697 195K 286K 78643K 12548 0
file desc 16 57K 82K 78643K 7673 0
sigio 0 0K 0K 78643K 43 0
proc 71 87K 112K 78643K 1462 0
subproc 104 6K 6K 78643K 403 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 363 0
in_multi 91 6K 6K 78643K 542 0
ether_multi 1 0K 0K 78643K 39 0
mrt 1 0K 0K 78643K 6 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 2365 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 346 426K 441K 78643K 46454 0
UVM aobj 131 8K 8K 78643K 142 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 190 0
NDP 13 0K 2K 78643K 154 0
temp 158 4772K 4902K 78643K 70434 0
kqueue 12 18K 28K 78643K 675 0
SYN cache 2 16K 16K 78643K 2 0
ddb{1}> 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 120 215 0 212 2 1 1 2 0 8 0
rtentry 112 510 0 409 4 1 3 4 0 8 0
unpcb 136 4543 0 4528 51 47 4 9 0 8 3
syncache 296 29 0 29 9 9 0 1 0 8 0
tcpqe 32 74 0 74 5 5 0 1 0 8 0
tcpcb 736 1385 0 1375 60 55 5 8 0 8 2
arp 120 71 0 52 1 0 1 1 0 8 0
inpcb 312 4643 0 4630 85 78 7 11 0 8 5
nd6 48 115 0 93 1 0 1 1 0 8 0
pkpcb 40 7 0 7 1 1 0 1 0 8 0
kcovpl 48 31 0 23 1 0 1 1 0 8 0
ppxss 1248 13 0 13 4 4 0 1 0 8 0
pfstscr 40 15 0 14 1 0 1 1 0 8 0
pffrag 232 54 0 50 4 3 1 1 0 482 0
pffrnode 88 54 0 50 4 3 1 1 0 8 0
pffrent 40 128 0 124 5 4 1 1 0 8 0
pfosfp 40 4241 0 3766 5 0 5 5 0 8 0
pfosfpen 112 4241 0 3357 26 0 26 26 0 8 0
pfrktable 1344 125 0 118 5 3 2 2 0 8 1
pftag 88 5 0 0 1 0 1 1 0 8 0
pfqueue 264 3 0 3 1 1 0 1 0 8 0
pfstitem 24 32 0 28 1 0 1 1 0 8 0
pfstkey 112 46 0 42 1 0 1 1 0 8 0
pfstate 320 34 0 31 2 1 1 2 0 8 0
pfrule 1360 288 0 278 5 4 1 4 0 8 0
art_heap8 4096 5 0 4 3 2 1 3 0 8 0
art_heap4 256 2317 0 1880 41 10 31 31 0 8 3
art_table 32 2322 0 1884 4 0 4 4 0 8 0
art_node 16 506 0 417 1 0 1 1 0 8 0
sysvmsgpl 40 8 0 3 1 0 1 1 0 8 0
semapl 112 1267 0 1257 1 0 1 1 0 8 0
shmpl 112 139 0 11 4 0 4 4 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 10523 0 9069 92 1 91 92 0 8 0
ffsino 272 10523 0 9069 98 1 97 98 0 8 0
nchpl 144 19924 0 18275 63 0 63 63 0 8 0
uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0
vnodes 224 5926 0 0 349 0 349 349 0 8 0
namei 1024 77357 0 77357 7 6 1 2 0 8 1
percpumem 16 103 0 63 1 0 1 1 0 8 0
vcpupl 2048 55 0 0 7 0 7 7 0 8 0
vmpool 560 65 0 10 5 1 4 4 0 8 0
pfiaddrpl 120 55 0 46 1 0 1 1 0 8 0
scsiplug 72 5 0 5 1 1 0 1 0 8 0
scxspl 216 57204 0 57204 21 20 1 8 0 8 1
plimitpl 152 1013 0 998 1 0 1 1 0 8 0
sigapl 424 7948 0 7881 8 0 8 8 0 8 0
futexpl 64 63523 0 63519 4 3 1 1 0 8 0
knotepl 120 573 0 0 10 1 9 10 0 8 0
kqueuepl 216 1790 0 1782 39 34 5 5 0 8 4
pipepl 336 2009 0 1981 40 37 3 11 0 8 0
fdescpl 496 7912 0 7883 7 3 4 5 0 8 0
filepl 152 53587 0 53343 105 90 15 22 0 8 5
lockfpl 104 12534 0 12532 18 16 2 5 0 8 1
lockfspl 48 6133 0 6131 4 3 1 3 0 8 0
sessionpl 144 47 0 30 1 0 1 1 0 8 0
pgrppl 48 54 0 37 1 0 1 1 0 8 0
ucredpl 96 4910 0 4898 1 0 1 1 0 8 0
zombiepl 144 7883 0 7881 5 4 1 1 0 8 0
processpl 1064 7948 0 7881 5 0 5 5 0 8 0
procpl 672 22121 0 22040 16 7 9 9 0 8 2
srpgc 96 26 0 26 7 7 0 1 0 8 0
sosppl 168 58 0 58 14 13 1 1 0 8 1
sockpl 480 9408 0 9377 254 241 13 34 0 8 8
mcl64k 65536 25 0 0 4 1 3 3 0 8 0
mcl16k 16384 17 0 0 3 0 3 3 0 8 1
mcl12k 12288 17 0 0 2 0 2 2 0 8 0
mcl9k 9216 17 0 0 2 0 2 2 0 8 0
mcl8k 8192 25 0 0 4 1 3 3 0 8 0
mcl4k 4096 25 0 0 4 1 3 3 0 8 0
mcl2k2 2112 11 0 0 1 0 1 1 0 8 0
mcl2k 2048 416 0 0 24 1 23 24 0 8 0
mtagpl 96 1765 0 0 42 0 42 42 0 8 0
mbufpl 256 5624 0 0 334 0 334 334 0 8 0
bufpl 288 13749 0 7419 453 0 453 453 0 8 0
anonpl 24 1505090 0 1487280 221 107 114 140 0 186 0
amapchunkpl 152 140039 0 139336 73 31 42 42 0 158 11
amappl16 200 20693 0 20146 114 84 30 48 0 8 0
amappl15 192 2642 0 2639 1 0 1 1 0 8 0
amappl14 184 216 0 215 1 0 1 1 0 8 0
amappl13 176 1719 0 1712 1 0 1 1 0 8 0
amappl12 168 850 0 843 1 0 1 1 0 8 0
amappl11 160 122 0 103 1 0 1 1 0 8 0
amappl10 152 243 0 236 1 0 1 1 0 8 0
amappl9 144 959 0 954 1 0 1 1 0 8 0
amappl8 136 2750 0 2650 6 2 4 4 0 8 0
amappl7 128 1855 0 1837 1 0 1 1 0 8 0
amappl6 120 809 0 787 2 0 2 2 0 8 0
amappl5 112 6481 0 6463 1 0 1 1 0 8 0
amappl4 104 1522 0 1488 3 2 1 2 0 8 0
amappl3 96 24745 0 24693 2 0 2 2 0 8 0
amappl2 88 10112 0 10040 4 1 3 3 0 8 0
amappl1 80 187912 0 187254 21 6 15 20 0 8 0
amappl 88 45403 0 45207 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 72 141 0 11 3 0 3 3 0 8 0
uaddrrnd 24 7977 0 7893 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 7977 0 7893 1 0 1 1 0 8 0
vmmpekpl 168 65255 0 65185 4 0 4 4 0 8 0
vmmpepl 168 769687 0 766873 259 127 132 158 0 357 0
vmsppl 368 7976 0 7892 9 1 8 8 0 8 0
rwobjpl 56 192717 0 185019 127 17 110 112 0 8 0
pdppl 4096 15961 0 15839 520 396 124 124 0 8 2
pvpl 32 2992888 0 2970411 420 230 190 242 0 265 4
pmappl 248 7976 0 7892 7 1 6 6 0 8 0
extentpl 40 58 0 38 1 0 1 1 0 8 0
phpool 112 1799 0 597 35 0 35 35 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp
ddb{0}> trace
x86_ipi_db(ffffffff82973ff0) 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(ffffffff82aeb080) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82aeb080) at __mp_lock+0x122 sys/kern/kern_lock.c:147
intr_handler(ffff800021135150,ffff800000077500) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532
Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+0x18f
__mp_lock(ffffffff82aeb080) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82aeb080) at __mp_lock+0x122 sys/kern/kern_lock.c:147
softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:88
Xsoftclock() at Xsoftclock+0x1f
__mp_lock(ffffffff82aeb080) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82aeb080) at __mp_lock+0x122 sys/kern/kern_lock.c:147
uvm_unmap_detach(ffff800021135410,1) at uvm_unmap_detach+0x113 sys/uvm/uvm_map.c:1615
uvm_map_teardown(fffffd805b7ef008) at uvm_map_teardown+0x262 sys/uvm/uvm_map.c:2789
uvmspace_free(fffffd805b7ef008) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3685
reaper(ffff8000210f9a40) at reaper+0x19a sys/kern/kern_exit.c:454
end trace frame: 0x0, count: -14
ddb{0}> machine ddbcpu 1
Stopped at db_enter+0x18: addq $0x8,%rsp
ddb{1}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440
witness_checkorder(ffffffff82952300,9,0) at witness_checkorder+0x10b7 witness_debugger sys/kern/subr_witness.c:2502 [inline]
witness_checkorder(ffffffff82952300,9,0) at witness_checkorder+0x10b7 sys/kern/subr_witness.c:1105
rw_enter_write(ffffffff829522f0) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128
uvn_io(fffffd8068fdb130,ffff80002e33c3c8,1,202,0) at uvn_io+0x418 sys/uvm/uvm_vnode.c:1243
uvn_get(fffffd8068fdb130,0,ffff80002e33c488,ffff80002e33c458,0,1,1e6f94c85faf33d5,0) at uvn_get+0x1df sys/uvm/uvm_vnode.c:1076
uvm_fault_lower(ffff80002e33c5f0,ffff80002e33c628,ffff80002e33c570,0) at uvm_fault_lower+0x36c sys/uvm/uvm_fault.c:1275
uvm_fault(fffffd806aa02a20,20001000,0,1) at uvm_fault+0x248
kpageflttrap(ffff80002e33c780,20001000) at kpageflttrap+0x209
kerntrap(ffff80002e33c780) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:318
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
copyin() at copyin+0x53
VOP_IOCTL(fffffd806f6898e8,c0104453,ffff80002e33cb70,2,fffffd807f7d8600,ffff8000ffff5ce0) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264
vn_ioctl(fffffd8079b20280,c0104453,ffff80002e33cb70,ffff8000ffff5ce0) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:531
sys_ioctl(ffff8000ffff5ce0,ffff80002e33cc88,ffff80002e33cce0) at sys_ioctl+0x4a2
syscall(ffff80002e33cd50) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff80002e33cd50) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x4afec235520, count: -16
---
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: 6497b0ad1c46 When calculating the with of spanned columns,..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=15d57467700000
kernel config: https://syzkaller.appspot.com/x/.config?x=bf87b6915a88cd0d
dashboard link: https://syzkaller.appspot.com/bug?extid=2945769fc3e6fd9ee413
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+294576...@syzkaller.appspotmail.com
witness: lock order reversal:
1st 0xffffffff828fc2c0 pf_lock (pf_lock)
2nd 0xffffffff82952300 netlock (netlock)
lock order "netlock"(rwlock) -> "pf_lock"(rwlock) first seen at:
#0 rw_enter_write+0x5b sys/kern/kern_rwlock.c:128
#1 pfioctl+0x3fbc sys/net/pf_ioctl.c:2968
#2 VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264
#3 vn_ioctl+0xbc sys/kern/vfs_vnops.c:531
#4 sys_ioctl+0x4a2
#5 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#5 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#6 Xsyscall+0x128
lock order "pf_lock"(rwlock) -> "netlock"(rwlock) first seen at:
#0 rw_enter_write+0x5b sys/kern/kern_rwlock.c:128
#1 uvn_io+0x418 sys/uvm/uvm_vnode.c:1243
#2 uvn_get+0x1df sys/uvm/uvm_vnode.c:1076
#3 uvm_fault_lower+0x36c sys/uvm/uvm_fault.c:1275
#4 uvm_fault+0x248
#5 kpageflttrap+0x209
#6 kerntrap+0xef sys/arch/amd64/amd64/trap.c:318
#7 alltraps_kern_meltdown+0x7b
#8 copyin+0x53
#9 VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264
#10 vn_ioctl+0xbc sys/kern/vfs_vnops.c:531
#11 sys_ioctl+0x4a2
#12 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#12 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#13 Xsyscall+0x128
Stopped at db_enter+0x18: addq $0x8,%rsp
ddb{1}>
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
the kernel did not panic
ddb{1}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440
witness_checkorder(ffffffff82952300,9,0) at witness_checkorder+0x10b7 witness_debugger sys/kern/subr_witness.c:2502 [inline]
witness_checkorder(ffffffff82952300,9,0) at witness_checkorder+0x10b7 sys/kern/subr_witness.c:1105
rw_enter_write(ffffffff829522f0) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128
uvn_io(fffffd8068fdb130,ffff80002e33c3c8,1,202,0) at uvn_io+0x418 sys/uvm/uvm_vnode.c:1243
uvn_get(fffffd8068fdb130,0,ffff80002e33c488,ffff80002e33c458,0,1,1e6f94c85faf33d5,0) at uvn_get+0x1df sys/uvm/uvm_vnode.c:1076
uvm_fault_lower(ffff80002e33c5f0,ffff80002e33c628,ffff80002e33c570,0) at uvm_fault_lower+0x36c sys/uvm/uvm_fault.c:1275
uvm_fault(fffffd806aa02a20,20001000,0,1) at uvm_fault+0x248
kpageflttrap(ffff80002e33c780,20001000) at kpageflttrap+0x209
kerntrap(ffff80002e33c780) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:318
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
copyin() at copyin+0x53
VOP_IOCTL(fffffd806f6898e8,c0104453,ffff80002e33cb70,2,fffffd807f7d8600,ffff8000ffff5ce0) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264
vn_ioctl(fffffd8079b20280,c0104453,ffff80002e33cb70,ffff8000ffff5ce0) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:531
sys_ioctl(ffff8000ffff5ce0,ffff80002e33cc88,ffff80002e33cce0) at sys_ioctl+0x4a2
syscall(ffff80002e33cd50) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff80002e33cd50) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x4afec235520, count: -16
ddb{1}> show registers
rdi 0x3
rsi 0x40000 acpi_pdirpa+0x2be68
rbp 0xffff80002e33c190
rbx 0x3
rdx 0xffff800000c04500
rcx 0
rax 0x3ffff acpi_pdirpa+0x2be67
r8 0xffff80002e33c100
r9 0x8080808080808080
r10 0x6a55b1634caf93ee
r11 0x375038852069a854
r12 0xffffffff82aa0890 w_lodata+0x52960
r13 0
r14 0xffffffff82a8ff30 w_lodata+0x42000
r15 0xfffffd8002f6a780
rip 0xffffffff81d38498 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff80002e33c180
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb{1}> show proc
PROC (syz-executor.4) pid=193463 stat=onproc
flags process=0 proc=4000000<THREAD>
pri=32, usrpri=83, nice=20
forw=0xffffffffffffffff, list=0xffff8000ffff4a80,0xffff800024ea82b8
process=0xffff8000ffff29a8 user=0xffff80002e337000, vmspace=0xfffffd806aa02a20
estcpu=36, cpticks=0, pctcpu=0.0
user=0, sys=0, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
29364 369780 47661 0 2 0 syz-executor.1
29364 118840 47661 0 3 0x4000080 fsleep syz-executor.1
56682 308653 77811 0 2 0 syz-executor.3
56682 308164 77811 0 3 0x4000080 fsleep syz-executor.3
56998 471917 23956 0 2 0 syz-executor.7
56998 126533 23956 0 3 0x4000080 fsleep syz-executor.7
89414 111484 51032 0 2 0 syz-executor.4
*89414 193463 51032 0 7 0x4000000 syz-executor.4
30490 507463 58329 0 2 0 syz-executor.6
30490 386683 58329 0 2 0x4000000 syz-executor.6
45517 461668 36828 0 2 0 syz-executor.5
45517 154905 36828 0 3 0x4000080 fsleep syz-executor.5
77811 212309 25596 0 3 0x82 nanoslp syz-executor.3
23956 262019 25596 0 3 0x82 nanoslp syz-executor.7
58329 102062 25596 0 3 0x82 nanoslp syz-executor.6
51032 352477 25596 0 3 0x82 nanoslp syz-executor.4
36828 17317 25596 0 3 0x82 nanoslp syz-executor.5
58097 147480 0 0 3 0x14200 acct acct
13113 11637 25596 0 3 0x82 nanoslp syz-executor.0
52394 111506 25596 0 3 0x82 nanoslp syz-executor.2
47661 53381 25596 0 3 0x82 nanoslp syz-executor.1
88467 157376 0 0 3 0x14280 nfsidl nfsio
22319 16992 0 0 3 0x14280 nfsidl nfsio
96384 58067 0 0 3 0x14280 nfsidl nfsio
32347 121566 0 0 3 0x14280 nfsidl nfsio
66706 377289 0 0 3 0x14280 nfsidl nfsio
72493 362741 0 0 3 0x14280 nfsidl nfsio
72134 89951 0 0 3 0x14280 nfsidl nfsio
76343 424198 0 0 3 0x14280 nfsidl nfsio
46349 481102 0 0 3 0x14280 nfsidl nfsio
19281 506225 0 0 3 0x14280 nfsidl nfsio
65083 508575 0 0 3 0x14280 nfsidl nfsio
26419 42104 0 0 3 0x14280 nfsidl nfsio
58716 493705 0 0 3 0x14280 nfsidl nfsio
47606 108488 0 0 3 0x14280 nfsidl nfsio
67456 60066 0 0 3 0x14280 nfsidl nfsio
72725 2630 0 0 3 0x14280 nfsidl nfsio
5265 522947 0 0 3 0x14280 nfsidl nfsio
22447 103007 0 0 3 0x14280 nfsidl nfsio
32037 8006 0 0 3 0x14280 nfsidl nfsio
44719 170128 0 0 3 0x14280 nfsidl nfsio
15457 174968 0 0 3 0x14200 bored sosplice
25596 410721 73584 0 3 0x82 thrsleep syz-fuzzer
25596 497189 73584 0 3 0x4000082 thrsleep syz-fuzzer
25596 194665 73584 0 3 0x4000082 kqread syz-fuzzer
25596 432394 73584 0 3 0x4000082 thrsleep syz-fuzzer
25596 193145 73584 0 3 0x4000082 thrsleep syz-fuzzer
25596 180296 73584 0 3 0x4000082 thrsleep syz-fuzzer
25596 454757 73584 0 3 0x4000082 thrsleep syz-fuzzer
25596 181779 73584 0 3 0x4000082 thrsleep syz-fuzzer
25596 454426 73584 0 3 0x4000082 thrsleep syz-fuzzer
73584 238686 43264 0 3 0x10008a sigsusp ksh
43264 413930 82003 0 3 0x9a kqread sshd
145 505987 1 0 3 0x100083 ttyin getty
82003 462029 1 0 3 0x88 kqread sshd
43277 47554 93886 74 3 0x1100092 bpf pflogd
93886 471365 1 0 3 0x80 netio pflogd
76356 120791 29697 73 3 0x1100090 kqread syslogd
29697 238795 1 0 3 0x100082 netio syslogd
47094 146153 1 0 3 0x100080 kqread resolvd
68843 339486 60012 77 3 0x100092 kqread dhcpleased
75098 366172 60012 77 3 0x100092 kqread dhcpleased
60012 467084 1 0 3 0x80 kqread dhcpleased
72632 136442 0 0 3 0x14200 bored smr
54994 382180 0 0 2 0x14200 zerothread
7206 250138 0 0 3 0x14200 aiodoned aiodoned
25144 275015 0 0 3 0x14200 syncer update
97499 124582 0 0 3 0x14200 cleaner cleaner
13266 246744 0 0 7 0x14200 reaper
73480 188219 0 0 3 0x14200 pgdaemon pagedaemon
36192 267233 0 0 3 0x14200 bored viomb
27844 69883 0 0 3 0x40014200 acpi0 acpi0
67483 183920 0 0 3 0x40014200 idle1
26761 329225 0 0 3 0x14200 bored softnet
15017 402570 0 0 3 0x14200 bored systqmp
76255 130169 0 0 3 0x14200 bored systq
46279 376168 0 0 3 0x40014200 bored softclock
58577 313974 0 0 3 0x40014200 idle0
1 193171 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
Process 89414 (syz-executor.4) thread 0xffff8000ffff5ce0 (193463)
exclusive rwlock pf_lock r = 0 (0xffffffff828fc2c0)
#0 witness_lock+0x44d
#1 pfioctl+0x4397
#2 VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264
#3 vn_ioctl+0xbc sys/kern/vfs_vnops.c:531
#4 sys_ioctl+0x4a2
#5 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#5 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#6 Xsyscall+0x128
exclusive rwlock pfioctl_rw r = 0 (0xffffffff828fc320)
#0 witness_lock+0x44d
#1 pfioctl+0x15e sys/net/pf_ioctl.c:1148
#2 VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264
#3 vn_ioctl+0xbc sys/kern/vfs_vnops.c:531
#4 sys_ioctl+0x4a2
#5 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#5 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#6 Xsyscall+0x128
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82aeb288)
#0 witness_lock+0x44d
#1 vn_ioctl+0x41 sys/kern/vfs_vnops.c:514
#2 sys_ioctl+0x4a2
#3 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#3 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#4 Xsyscall+0x128
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10216 6562K 7539K 78643K 49903 0
pcb 13 14K 16K 78643K 606 0
rtable 239 11K 14K 78643K 1797 0
ifaddr 99 21K 23K 78643K 929 0
sysctl 3 1K 1K 78643K 3 0
counters 56 35K 36K 78643K 182 0
ioctlops 0 0K 8K 78643K 5874 0
iov 0 0K 16K 78643K 721 0
mount 1 1K 1K 78643K 1 0
log 0 0K 0K 78643K 5 0
vnodes 1493 93K 94K 78643K 11806 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 5K 78643K 53 0
VM map 2 1K 1K 78643K 2 0
sem 12 0K 0K 78643K 1269 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1697 195K 286K 78643K 12548 0
file desc 16 57K 82K 78643K 7673 0
sigio 0 0K 0K 78643K 43 0
proc 71 87K 112K 78643K 1462 0
subproc 104 6K 6K 78643K 403 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 363 0
in_multi 91 6K 6K 78643K 542 0
ether_multi 1 0K 0K 78643K 39 0
mrt 1 0K 0K 78643K 6 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 2365 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 346 426K 441K 78643K 46454 0
UVM aobj 131 8K 8K 78643K 142 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 190 0
NDP 13 0K 2K 78643K 154 0
temp 158 4772K 4902K 78643K 70434 0
kqueue 12 18K 28K 78643K 675 0
SYN cache 2 16K 16K 78643K 2 0
ddb{1}> 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 120 215 0 212 2 1 1 2 0 8 0
rtentry 112 510 0 409 4 1 3 4 0 8 0
unpcb 136 4543 0 4528 51 47 4 9 0 8 3
syncache 296 29 0 29 9 9 0 1 0 8 0
tcpqe 32 74 0 74 5 5 0 1 0 8 0
tcpcb 736 1385 0 1375 60 55 5 8 0 8 2
arp 120 71 0 52 1 0 1 1 0 8 0
inpcb 312 4643 0 4630 85 78 7 11 0 8 5
nd6 48 115 0 93 1 0 1 1 0 8 0
pkpcb 40 7 0 7 1 1 0 1 0 8 0
kcovpl 48 31 0 23 1 0 1 1 0 8 0
ppxss 1248 13 0 13 4 4 0 1 0 8 0
pfstscr 40 15 0 14 1 0 1 1 0 8 0
pffrag 232 54 0 50 4 3 1 1 0 482 0
pffrnode 88 54 0 50 4 3 1 1 0 8 0
pffrent 40 128 0 124 5 4 1 1 0 8 0
pfosfp 40 4241 0 3766 5 0 5 5 0 8 0
pfosfpen 112 4241 0 3357 26 0 26 26 0 8 0
pfrktable 1344 125 0 118 5 3 2 2 0 8 1
pftag 88 5 0 0 1 0 1 1 0 8 0
pfqueue 264 3 0 3 1 1 0 1 0 8 0
pfstitem 24 32 0 28 1 0 1 1 0 8 0
pfstkey 112 46 0 42 1 0 1 1 0 8 0
pfstate 320 34 0 31 2 1 1 2 0 8 0
pfrule 1360 288 0 278 5 4 1 4 0 8 0
art_heap8 4096 5 0 4 3 2 1 3 0 8 0
art_heap4 256 2317 0 1880 41 10 31 31 0 8 3
art_table 32 2322 0 1884 4 0 4 4 0 8 0
art_node 16 506 0 417 1 0 1 1 0 8 0
sysvmsgpl 40 8 0 3 1 0 1 1 0 8 0
semapl 112 1267 0 1257 1 0 1 1 0 8 0
shmpl 112 139 0 11 4 0 4 4 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 10523 0 9069 92 1 91 92 0 8 0
ffsino 272 10523 0 9069 98 1 97 98 0 8 0
nchpl 144 19924 0 18275 63 0 63 63 0 8 0
uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0
vnodes 224 5926 0 0 349 0 349 349 0 8 0
namei 1024 77357 0 77357 7 6 1 2 0 8 1
percpumem 16 103 0 63 1 0 1 1 0 8 0
vcpupl 2048 55 0 0 7 0 7 7 0 8 0
vmpool 560 65 0 10 5 1 4 4 0 8 0
pfiaddrpl 120 55 0 46 1 0 1 1 0 8 0
scsiplug 72 5 0 5 1 1 0 1 0 8 0
scxspl 216 57204 0 57204 21 20 1 8 0 8 1
plimitpl 152 1013 0 998 1 0 1 1 0 8 0
sigapl 424 7948 0 7881 8 0 8 8 0 8 0
futexpl 64 63523 0 63519 4 3 1 1 0 8 0
knotepl 120 573 0 0 10 1 9 10 0 8 0
kqueuepl 216 1790 0 1782 39 34 5 5 0 8 4
pipepl 336 2009 0 1981 40 37 3 11 0 8 0
fdescpl 496 7912 0 7883 7 3 4 5 0 8 0
filepl 152 53587 0 53343 105 90 15 22 0 8 5
lockfpl 104 12534 0 12532 18 16 2 5 0 8 1
lockfspl 48 6133 0 6131 4 3 1 3 0 8 0
sessionpl 144 47 0 30 1 0 1 1 0 8 0
pgrppl 48 54 0 37 1 0 1 1 0 8 0
ucredpl 96 4910 0 4898 1 0 1 1 0 8 0
zombiepl 144 7883 0 7881 5 4 1 1 0 8 0
processpl 1064 7948 0 7881 5 0 5 5 0 8 0
procpl 672 22121 0 22040 16 7 9 9 0 8 2
srpgc 96 26 0 26 7 7 0 1 0 8 0
sosppl 168 58 0 58 14 13 1 1 0 8 1
sockpl 480 9408 0 9377 254 241 13 34 0 8 8
mcl64k 65536 25 0 0 4 1 3 3 0 8 0
mcl16k 16384 17 0 0 3 0 3 3 0 8 1
mcl12k 12288 17 0 0 2 0 2 2 0 8 0
mcl9k 9216 17 0 0 2 0 2 2 0 8 0
mcl8k 8192 25 0 0 4 1 3 3 0 8 0
mcl4k 4096 25 0 0 4 1 3 3 0 8 0
mcl2k2 2112 11 0 0 1 0 1 1 0 8 0
mcl2k 2048 416 0 0 24 1 23 24 0 8 0
mtagpl 96 1765 0 0 42 0 42 42 0 8 0
mbufpl 256 5624 0 0 334 0 334 334 0 8 0
bufpl 288 13749 0 7419 453 0 453 453 0 8 0
anonpl 24 1505090 0 1487280 221 107 114 140 0 186 0
amapchunkpl 152 140039 0 139336 73 31 42 42 0 158 11
amappl16 200 20693 0 20146 114 84 30 48 0 8 0
amappl15 192 2642 0 2639 1 0 1 1 0 8 0
amappl14 184 216 0 215 1 0 1 1 0 8 0
amappl13 176 1719 0 1712 1 0 1 1 0 8 0
amappl12 168 850 0 843 1 0 1 1 0 8 0
amappl11 160 122 0 103 1 0 1 1 0 8 0
amappl10 152 243 0 236 1 0 1 1 0 8 0
amappl9 144 959 0 954 1 0 1 1 0 8 0
amappl8 136 2750 0 2650 6 2 4 4 0 8 0
amappl7 128 1855 0 1837 1 0 1 1 0 8 0
amappl6 120 809 0 787 2 0 2 2 0 8 0
amappl5 112 6481 0 6463 1 0 1 1 0 8 0
amappl4 104 1522 0 1488 3 2 1 2 0 8 0
amappl3 96 24745 0 24693 2 0 2 2 0 8 0
amappl2 88 10112 0 10040 4 1 3 3 0 8 0
amappl1 80 187912 0 187254 21 6 15 20 0 8 0
amappl 88 45403 0 45207 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 72 141 0 11 3 0 3 3 0 8 0
uaddrrnd 24 7977 0 7893 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 7977 0 7893 1 0 1 1 0 8 0
vmmpekpl 168 65255 0 65185 4 0 4 4 0 8 0
vmmpepl 168 769687 0 766873 259 127 132 158 0 357 0
vmsppl 368 7976 0 7892 9 1 8 8 0 8 0
rwobjpl 56 192717 0 185019 127 17 110 112 0 8 0
pdppl 4096 15961 0 15839 520 396 124 124 0 8 2
pvpl 32 2992888 0 2970411 420 230 190 242 0 265 4
pmappl 248 7976 0 7892 7 1 6 6 0 8 0
extentpl 40 58 0 38 1 0 1 1 0 8 0
phpool 112 1799 0 597 35 0 35 35 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp
ddb{0}> trace
x86_ipi_db(ffffffff82973ff0) 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(ffffffff82aeb080) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82aeb080) at __mp_lock+0x122 sys/kern/kern_lock.c:147
intr_handler(ffff800021135150,ffff800000077500) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532
Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+0x18f
__mp_lock(ffffffff82aeb080) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82aeb080) at __mp_lock+0x122 sys/kern/kern_lock.c:147
softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:88
Xsoftclock() at Xsoftclock+0x1f
__mp_lock(ffffffff82aeb080) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82aeb080) at __mp_lock+0x122 sys/kern/kern_lock.c:147
uvm_unmap_detach(ffff800021135410,1) at uvm_unmap_detach+0x113 sys/uvm/uvm_map.c:1615
uvm_map_teardown(fffffd805b7ef008) at uvm_map_teardown+0x262 sys/uvm/uvm_map.c:2789
uvmspace_free(fffffd805b7ef008) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3685
reaper(ffff8000210f9a40) at reaper+0x19a sys/kern/kern_exit.c:454
end trace frame: 0x0, count: -14
ddb{0}> machine ddbcpu 1
Stopped at db_enter+0x18: addq $0x8,%rsp
ddb{1}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440
witness_checkorder(ffffffff82952300,9,0) at witness_checkorder+0x10b7 witness_debugger sys/kern/subr_witness.c:2502 [inline]
witness_checkorder(ffffffff82952300,9,0) at witness_checkorder+0x10b7 sys/kern/subr_witness.c:1105
rw_enter_write(ffffffff829522f0) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128
uvn_io(fffffd8068fdb130,ffff80002e33c3c8,1,202,0) at uvn_io+0x418 sys/uvm/uvm_vnode.c:1243
uvn_get(fffffd8068fdb130,0,ffff80002e33c488,ffff80002e33c458,0,1,1e6f94c85faf33d5,0) at uvn_get+0x1df sys/uvm/uvm_vnode.c:1076
uvm_fault_lower(ffff80002e33c5f0,ffff80002e33c628,ffff80002e33c570,0) at uvm_fault_lower+0x36c sys/uvm/uvm_fault.c:1275
uvm_fault(fffffd806aa02a20,20001000,0,1) at uvm_fault+0x248
kpageflttrap(ffff80002e33c780,20001000) at kpageflttrap+0x209
kerntrap(ffff80002e33c780) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:318
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
copyin() at copyin+0x53
VOP_IOCTL(fffffd806f6898e8,c0104453,ffff80002e33cb70,2,fffffd807f7d8600,ffff8000ffff5ce0) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264
vn_ioctl(fffffd8079b20280,c0104453,ffff80002e33cb70,ffff8000ffff5ce0) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:531
sys_ioctl(ffff8000ffff5ce0,ffff80002e33cc88,ffff80002e33cce0) at sys_ioctl+0x4a2
syscall(ffff80002e33cd50) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff80002e33cd50) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x4afec235520, count: -16
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
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syzbot
Apr 8, 2022, 11:15:23 PM4/8/22
to syzkaller-o...@googlegroups.com
syzbot has found a reproducer for the following issue on:
HEAD commit: 6497b0ad1c46 When calculating the with of spanned columns,..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=17dda6b0f00000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=163978ef700000
ddb{0}>
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
uvn_get(fffffd806d6e23d0,0,ffff8000211cdba8,ffff8000211cdb78,0,1,967aab93fa481079,0) at uvn_get+0x1df sys/uvm/uvm_vnode.c:1076
uvm_fault_lower(ffff8000211cdd10,ffff8000211cdd48,ffff8000211cdc90,0) at uvm_fault_lower+0x36c sys/uvm/uvm_fault.c:1275
uvm_fault(fffffd806ee9bcf8,20001000,0,1) at uvm_fault+0x248
kpageflttrap(ffff8000211cdea0,20001000) at kpageflttrap+0x209
kerntrap(ffff8000211cdea0) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:318
vn_ioctl(fffffd806e5ebdb8,c0104453,ffff8000211ce290,ffff800021143268) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:531
sys_ioctl(ffff800021143268,ffff8000211ce3a8,ffff8000211ce400) at sys_ioctl+0x4a2
syscall(ffff8000211ce470) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000211ce470) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
ddb{0}> show registers
rdi 0x3
rsi 0xffffffff82900ce0 __sancov_gen_cov_switch_values.134
rbp 0xffff8000211cd8b0
rbx 0x3
rdx 0x3fd
rcx 0
rax 0x1
r8 0xffff8000211cd820
r9 0x8080808080808080
r10 0xa17ceec1c30d82e7
r11 0x5e462530aaa0c827
r12 0xffffffff82aa07e0 w_lodata+0x528b0
r13 0
r14 0xffffffff82a9ca00 w_lodata+0x4ead0
PROC (syz-executor3576298726) pid=113883 stat=onproc
flags process=2<EXEC> proc=0
pri=17, usrpri=56, nice=20
forw=0xffffffffffffffff, list=0xffff800021142008,0xffffffff82a01350
process=0xffff8000211a1900 user=0xffff8000211c9000, vmspace=0xfffffd806ee9bcf8
estcpu=6, cpticks=1, pctcpu=0.0
user=0, sys=0, intr=0
ddb{0}> ps
26800 477428 2271 0 3 0x10008a sigsusp ksh
2271 431499 17313 0 3 0x9a kqread sshd
91497 516967 1 0 3 0x100083 ttyin getty
17313 258976 1 0 3 0x88 kqread sshd
14297 228898 5248 74 3 0x1100092 bpf pflogd
5248 59361 1 0 3 0x80 netio pflogd
54122 283421 29003 73 3 0x1100090 kqread syslogd
29003 43524 1 0 3 0x100082 netio syslogd
86658 244989 1 0 3 0x100080 kqread resolvd
81675 125718 45098 77 3 0x100092 kqread dhcpleased
96606 154059 45098 77 3 0x100092 kqread dhcpleased
45098 97401 1 0 3 0x80 kqread dhcpleased
78185 52793 0 0 3 0x14200 bored smr
11271 61952 0 0 3 0x14200 pgzero zerothread
85211 414023 0 0 3 0x14200 aiodoned aiodoned
4500 230863 0 0 3 0x14200 syncer update
35606 452893 0 0 3 0x14200 cleaner cleaner
15856 335078 0 0 3 0x14200 reaper reaper
87349 444540 0 0 3 0x14200 pgdaemon pagedaemon
46865 23601 0 0 3 0x14200 bored viomb
60063 366820 0 0 3 0x40014200 acpi0 acpi0
68680 377295 0 0 7 0x40014200 idle1
41648 97981 0 0 3 0x14200 bored softnet
3908 47991 0 0 3 0x14200 bored systqmp
98358 94506 0 0 3 0x14200 bored systq
60946 124142 0 0 3 0x40014200 bored softclock
55466 416362 0 0 3 0x40014200 idle0
1 311488 0 0 3 0x82 wait init
Process 53731 (syz-executor3576298726) thread 0xffff800021143268 (113883)
ddb{0}> show malloc
pcb 13 8K 8K 78643K 13 0
rtable 62 2K 2K 78643K 112 0
ifaddr 29 8K 8K 78643K 32 0
counters 40 33K 33K 78643K 40 0
ioctlops 0 0K 4K 78643K 1479 0
proc 67 87K 87K 78643K 282 0
ether_multi 1 0K 0K 78643K 1 0
exec 0 0K 2K 78643K 432 0
UVM aobj 3 2K 2K 78643K 3 0
temp 25 4709K 4769K 78643K 2508 0
kqueue 11 16K 18K 78643K 24 0
rtentry 112 23 0 1 1 0 1 1 0 8 0
unpcb 136 35 0 20 1 0 1 1 0 8 0
syncache 296 5 0 5 1 0 1 1 0 8 1
tcpcb 736 8 0 5 1 0 1 1 0 8 0
arp 120 2 0 0 1 0 1 1 0 8 0
inpcb 312 32 0 26 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 9 0 0 1 0 1 1 0 8 0
pfstkey 112 9 0 0 1 0 1 1 0 8 0
pfstate 320 9 0 0 1 0 1 1 0 8 0
pfrule 1360 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 97 0 0 7 0 7 7 0 8 0
art_table 32 98 0 0 1 0 1 1 0 8 0
art_node 16 22 0 2 1 0 1 1 0 8 0
ffsino 272 1426 0 39 93 0 93 93 0 8 0
nchpl 144 1614 0 49 58 0 58 58 0 8 0
uvmvnodes 80 1436 0 0 30 0 30 30 0 8 0
vnodes 224 1436 0 0 85 0 85 85 0 8 0
namei 1024 4474 0 4474 1 0 1 1 0 8 1
percpumem 16 32 0 0 1 0 1 1 0 8 0
scxspl 216 3787 0 3787 2 1 1 2 0 8 1
plimitpl 152 16 0 9 1 0 1 1 0 8 0
sigapl 424 320 0 291 4 0 4 4 0 8 0
knotepl 120 43 0 0 2 0 2 2 0 8 0
kqueuepl 216 20 0 13 1 0 1 1 0 8 0
pipepl 336 86 0 83 1 0 1 1 0 8 0
fdescpl 496 306 0 291 3 0 3 3 0 8 0
filepl 152 1184 0 1124 3 0 3 3 0 8 0
lockfpl 104 6 0 4 1 0 1 1 0 8 0
lockfspl 48 4 0 2 1 0 1 1 0 8 0
sessionpl 144 18 0 9 1 0 1 1 0 8 0
pgrppl 48 18 0 9 1 0 1 1 0 8 0
ucredpl 96 69 0 57 1 0 1 1 0 8 0
zombiepl 144 291 0 291 1 0 1 1 0 8 1
processpl 1064 320 0 291 3 0 3 3 0 8 0
procpl 672 320 0 291 3 0 3 3 0 8 0
sockpl 480 84 0 60 4 0 4 4 0 8 0
mcl8k 8192 3 0 0 1 0 1 1 0 8 0
mcl4k 4096 3 0 0 1 0 1 1 0 8 0
mcl2k 2048 57 0 0 8 0 8 8 0 8 0
mtagpl 96 3 0 0 1 0 1 1 0 8 0
mbufpl 256 105 0 0 7 0 7 7 0 8 0
bufpl 288 2011 0 92 138 0 138 138 0 8 0
anonpl 24 38815 0 36828 15 1 14 15 0 186 2
amapchunkpl 152 2829 0 2734 6 2 4 6 0 158 0
amappl16 200 98 0 93 1 0 1 1 0 8 0
amappl13 176 34 0 33 1 0 1 1 0 8 0
amappl12 168 3 0 3 1 0 1 1 0 8 1
amappl11 160 66 0 49 1 0 1 1 0 8 0
amappl10 152 3 0 1 1 0 1 1 0 8 0
amappl9 144 485 0 483 1 0 1 1 0 8 0
amappl8 136 364 0 363 1 0 1 1 0 8 0
amappl7 128 52 0 49 1 0 1 1 0 8 0
amappl6 120 105 0 95 1 0 1 1 0 8 0
amappl5 112 92 0 79 1 0 1 1 0 8 0
amappl4 104 627 0 606 1 0 1 1 0 8 0
amappl3 96 406 0 383 1 0 1 1 0 8 0
amappl2 88 454 0 416 1 0 1 1 0 8 0
amappl1 80 9522 0 9115 10 0 10 10 0 8 1
amappl 88 1268 0 1229 2 1 1 2 0 92 0
uaddrrnd 24 306 0 291 1 0 1 1 0 8 0
vmmpekpl 168 6254 0 6238 1 0 1 1 0 8 0
vmmpepl 168 27076 0 26218 43 1 42 42 0 357 3
vmsppl 368 305 0 291 2 0 2 2 0 8 0
rwobjpl 56 9788 0 7781 30 0 30 30 0 8 0
pdppl 4096 619 0 582 45 8 37 43 0 8 0
pvpl 32 131152 0 127209 35 0 35 35 0 265 0
pmappl 248 305 0 291 2 0 2 2 0 8 0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
uvn_get(fffffd806d6e23d0,0,ffff8000211cdba8,ffff8000211cdb78,0,1,967aab93fa481079,0) at uvn_get+0x1df sys/uvm/uvm_vnode.c:1076
uvm_fault_lower(ffff8000211cdd10,ffff8000211cdd48,ffff8000211cdc90,0) at uvm_fault_lower+0x36c sys/uvm/uvm_fault.c:1275
uvm_fault(fffffd806ee9bcf8,20001000,0,1) at uvm_fault+0x248
kpageflttrap(ffff8000211cdea0,20001000) at kpageflttrap+0x209
kerntrap(ffff8000211cdea0) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:318
vn_ioctl(fffffd806e5ebdb8,c0104453,ffff8000211ce290,ffff800021143268) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:531
sys_ioctl(ffff800021143268,ffff8000211ce3a8,ffff8000211ce400) at sys_ioctl+0x4a2
syscall(ffff8000211ce470) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000211ce470) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
ddb{1}> trace
x86_ipi_db(ffff800020ce8ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393
sched_idle(ffff800020ce8ff0) at sched_idle+0x417 sys/kern/kern_sched.c:178
end trace frame: 0x0, count: -5
ddb{1}>
HEAD commit: 6497b0ad1c46 When calculating the with of spanned columns,..
git tree: openbsd
kernel config: https://syzkaller.appspot.com/x/.config?x=bf87b6915a88cd0d
dashboard link: https://syzkaller.appspot.com/bug?extid=2945769fc3e6fd9ee413
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12daba88f00000
dashboard link: https://syzkaller.appspot.com/bug?extid=2945769fc3e6fd9ee413
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=163978ef700000
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
the kernel did not panic
ddb{0}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440
witness_checkorder(ffffffff82952300,9,0) at witness_checkorder+0x10b7 witness_debugger sys/kern/subr_witness.c:2502 [inline]
witness_checkorder(ffffffff82952300,9,0) at witness_checkorder+0x10b7 sys/kern/subr_witness.c:1105
rw_enter_write(ffffffff829522f0) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128
uvn_io(fffffd806d6e23d0,ffff8000211cdae8,1,202,0) at uvn_io+0x418 sys/uvm/uvm_vnode.c:1243
witness_checkorder(ffffffff82952300,9,0) at witness_checkorder+0x10b7 witness_debugger sys/kern/subr_witness.c:2502 [inline]
witness_checkorder(ffffffff82952300,9,0) at witness_checkorder+0x10b7 sys/kern/subr_witness.c:1105
rw_enter_write(ffffffff829522f0) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128
uvn_get(fffffd806d6e23d0,0,ffff8000211cdba8,ffff8000211cdb78,0,1,967aab93fa481079,0) at uvn_get+0x1df sys/uvm/uvm_vnode.c:1076
uvm_fault_lower(ffff8000211cdd10,ffff8000211cdd48,ffff8000211cdc90,0) at uvm_fault_lower+0x36c sys/uvm/uvm_fault.c:1275
uvm_fault(fffffd806ee9bcf8,20001000,0,1) at uvm_fault+0x248
kpageflttrap(ffff8000211cdea0,20001000) at kpageflttrap+0x209
kerntrap(ffff8000211cdea0) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:318
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
copyin() at copyin+0x53
VOP_IOCTL(fffffd806f68dc68,c0104453,ffff8000211ce290,2,fffffd807f7d8660,ffff800021143268) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264
copyin() at copyin+0x53
vn_ioctl(fffffd806e5ebdb8,c0104453,ffff8000211ce290,ffff800021143268) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:531
sys_ioctl(ffff800021143268,ffff8000211ce3a8,ffff8000211ce400) at sys_ioctl+0x4a2
syscall(ffff8000211ce470) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000211ce470) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffc54e0, count: -16
end of kernel
ddb{0}> show registers
rdi 0x3
rsi 0xffffffff82900ce0 __sancov_gen_cov_switch_values.134
rbp 0xffff8000211cd8b0
rbx 0x3
rdx 0x3fd
rcx 0
rax 0x1
r8 0xffff8000211cd820
r9 0x8080808080808080
r10 0xa17ceec1c30d82e7
r11 0x5e462530aaa0c827
r12 0xffffffff82aa07e0 w_lodata+0x528b0
r13 0
r14 0xffffffff82a9ca00 w_lodata+0x4ead0
r15 0xfffffd8002f6a780
rip 0xffffffff81d38498 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff8000211cd8a0
rip 0xffffffff81d38498 db_enter+0x18
cs 0x8
rflags 0x246
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb{0}> show proc
db_enter+0x18: addq $0x8,%rsp
PROC (syz-executor3576298726) pid=113883 stat=onproc
flags process=2<EXEC> proc=0
pri=17, usrpri=56, nice=20
forw=0xffffffffffffffff, list=0xffff800021142008,0xffffffff82a01350
process=0xffff8000211a1900 user=0xffff8000211c9000, vmspace=0xfffffd806ee9bcf8
estcpu=6, cpticks=1, pctcpu=0.0
user=0, sys=0, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
*53731 113883 26800 0 7 0x2 syz-executor3576298726
26800 477428 2271 0 3 0x10008a sigsusp ksh
2271 431499 17313 0 3 0x9a kqread sshd
91497 516967 1 0 3 0x100083 ttyin getty
17313 258976 1 0 3 0x88 kqread sshd
14297 228898 5248 74 3 0x1100092 bpf pflogd
5248 59361 1 0 3 0x80 netio pflogd
54122 283421 29003 73 3 0x1100090 kqread syslogd
29003 43524 1 0 3 0x100082 netio syslogd
86658 244989 1 0 3 0x100080 kqread resolvd
81675 125718 45098 77 3 0x100092 kqread dhcpleased
96606 154059 45098 77 3 0x100092 kqread dhcpleased
45098 97401 1 0 3 0x80 kqread dhcpleased
78185 52793 0 0 3 0x14200 bored smr
11271 61952 0 0 3 0x14200 pgzero zerothread
85211 414023 0 0 3 0x14200 aiodoned aiodoned
4500 230863 0 0 3 0x14200 syncer update
35606 452893 0 0 3 0x14200 cleaner cleaner
15856 335078 0 0 3 0x14200 reaper reaper
87349 444540 0 0 3 0x14200 pgdaemon pagedaemon
46865 23601 0 0 3 0x14200 bored viomb
60063 366820 0 0 3 0x40014200 acpi0 acpi0
68680 377295 0 0 7 0x40014200 idle1
41648 97981 0 0 3 0x14200 bored softnet
3908 47991 0 0 3 0x14200 bored systqmp
98358 94506 0 0 3 0x14200 bored systq
60946 124142 0 0 3 0x40014200 bored softclock
55466 416362 0 0 3 0x40014200 idle0
1 311488 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
Process 53731 (syz-executor3576298726) thread 0xffff800021143268 (113883)
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10149 6454K 6455K 78643K 11239 0
pcb 13 8K 8K 78643K 13 0
rtable 62 2K 2K 78643K 112 0
ifaddr 29 8K 8K 78643K 32 0
counters 40 33K 33K 78643K 40 0
ioctlops 0 0K 4K 78643K 1479 0
mount 1 1K 1K 78643K 1 0
log 0 0K 0K 78643K 5 0
vnodes 1167 73K 73K 78643K 1180 0
log 0 0K 0K 78643K 5 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 1K 78643K 2 0
UFS mount 5 36K 36K 78643K 5 0
VM map 2 1K 1K 78643K 2 0
sem 2 0K 0K 78643K 2 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1697 195K 286K 78643K 12548 0
file desc 1 0K 0K 78643K 1 0
ACPI 1697 195K 286K 78643K 12548 0
proc 67 87K 87K 78643K 282 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
in_multi 11 0K 0K 78643K 11 0
NFS daemon 1 16K 16K 78643K 1 0
ether_multi 1 0K 0K 78643K 1 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 25 122K 122K 78643K 25 0
MSDOSFS mount 1 16K 16K 78643K 1 0
exec 0 0K 2K 78643K 432 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 58 3K 5K 78643K 1550 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 aobj 3 2K 2K 78643K 3 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
NDP 4 0K 0K 78643K 4 0
crypto data 1 1K 1K 78643K 1 0
temp 25 4709K 4769K 78643K 2508 0
kqueue 11 16K 18K 78643K 24 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 17 0 14 1 0 1 1 0 8 0
plcache 128 22 0 0 1 0 1 1 0 8 0
rtentry 112 23 0 1 1 0 1 1 0 8 0
unpcb 136 35 0 20 1 0 1 1 0 8 0
syncache 296 5 0 5 1 0 1 1 0 8 1
tcpcb 736 8 0 5 1 0 1 1 0 8 0
arp 120 2 0 0 1 0 1 1 0 8 0
inpcb 312 32 0 26 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 9 0 0 1 0 1 1 0 8 0
pfstkey 112 9 0 0 1 0 1 1 0 8 0
pfstate 320 9 0 0 1 0 1 1 0 8 0
pfrule 1360 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 97 0 0 7 0 7 7 0 8 0
art_table 32 98 0 0 1 0 1 1 0 8 0
art_node 16 22 0 2 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 1426 0 39 87 0 87 87 0 8 0
ffsino 272 1426 0 39 93 0 93 93 0 8 0
nchpl 144 1614 0 49 58 0 58 58 0 8 0
uvmvnodes 80 1436 0 0 30 0 30 30 0 8 0
vnodes 224 1436 0 0 85 0 85 85 0 8 0
namei 1024 4474 0 4474 1 0 1 1 0 8 1
percpumem 16 32 0 0 1 0 1 1 0 8 0
scxspl 216 3787 0 3787 2 1 1 2 0 8 1
plimitpl 152 16 0 9 1 0 1 1 0 8 0
sigapl 424 320 0 291 4 0 4 4 0 8 0
knotepl 120 43 0 0 2 0 2 2 0 8 0
kqueuepl 216 20 0 13 1 0 1 1 0 8 0
pipepl 336 86 0 83 1 0 1 1 0 8 0
fdescpl 496 306 0 291 3 0 3 3 0 8 0
filepl 152 1184 0 1124 3 0 3 3 0 8 0
lockfpl 104 6 0 4 1 0 1 1 0 8 0
lockfspl 48 4 0 2 1 0 1 1 0 8 0
sessionpl 144 18 0 9 1 0 1 1 0 8 0
pgrppl 48 18 0 9 1 0 1 1 0 8 0
ucredpl 96 69 0 57 1 0 1 1 0 8 0
zombiepl 144 291 0 291 1 0 1 1 0 8 1
processpl 1064 320 0 291 3 0 3 3 0 8 0
procpl 672 320 0 291 3 0 3 3 0 8 0
sockpl 480 84 0 60 4 0 4 4 0 8 0
mcl8k 8192 3 0 0 1 0 1 1 0 8 0
mcl4k 4096 3 0 0 1 0 1 1 0 8 0
mcl2k 2048 57 0 0 8 0 8 8 0 8 0
mtagpl 96 3 0 0 1 0 1 1 0 8 0
mbufpl 256 105 0 0 7 0 7 7 0 8 0
bufpl 288 2011 0 92 138 0 138 138 0 8 0
anonpl 24 38815 0 36828 15 1 14 15 0 186 2
amapchunkpl 152 2829 0 2734 6 2 4 6 0 158 0
amappl16 200 98 0 93 1 0 1 1 0 8 0
amappl13 176 34 0 33 1 0 1 1 0 8 0
amappl12 168 3 0 3 1 0 1 1 0 8 1
amappl11 160 66 0 49 1 0 1 1 0 8 0
amappl10 152 3 0 1 1 0 1 1 0 8 0
amappl9 144 485 0 483 1 0 1 1 0 8 0
amappl8 136 364 0 363 1 0 1 1 0 8 0
amappl7 128 52 0 49 1 0 1 1 0 8 0
amappl6 120 105 0 95 1 0 1 1 0 8 0
amappl5 112 92 0 79 1 0 1 1 0 8 0
amappl4 104 627 0 606 1 0 1 1 0 8 0
amappl3 96 406 0 383 1 0 1 1 0 8 0
amappl2 88 454 0 416 1 0 1 1 0 8 0
amappl1 80 9522 0 9115 10 0 10 10 0 8 1
amappl 88 1268 0 1229 2 1 1 2 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
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
uaddrrnd 24 306 0 291 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 306 0 291 1 0 1 1 0 8 0
vmmpekpl 168 6254 0 6238 1 0 1 1 0 8 0
vmmpepl 168 27076 0 26218 43 1 42 42 0 357 3
vmsppl 368 305 0 291 2 0 2 2 0 8 0
rwobjpl 56 9788 0 7781 30 0 30 30 0 8 0
pdppl 4096 619 0 582 45 8 37 43 0 8 0
pvpl 32 131152 0 127209 35 0 35 35 0 265 0
pmappl 248 305 0 291 2 0 2 2 0 8 0
extentpl 40 58 0 38 1 0 1 1 0 8 0
phpool 112 402 0 11 12 0 12 12 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:440
witness_checkorder(ffffffff82952300,9,0) at witness_checkorder+0x10b7 witness_debugger sys/kern/subr_witness.c:2502 [inline]
witness_checkorder(ffffffff82952300,9,0) at witness_checkorder+0x10b7 sys/kern/subr_witness.c:1105
rw_enter_write(ffffffff829522f0) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128
uvn_io(fffffd806d6e23d0,ffff8000211cdae8,1,202,0) at uvn_io+0x418 sys/uvm/uvm_vnode.c:1243
witness_checkorder(ffffffff82952300,9,0) at witness_checkorder+0x10b7 witness_debugger sys/kern/subr_witness.c:2502 [inline]
witness_checkorder(ffffffff82952300,9,0) at witness_checkorder+0x10b7 sys/kern/subr_witness.c:1105
rw_enter_write(ffffffff829522f0) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128
uvn_get(fffffd806d6e23d0,0,ffff8000211cdba8,ffff8000211cdb78,0,1,967aab93fa481079,0) at uvn_get+0x1df sys/uvm/uvm_vnode.c:1076
uvm_fault_lower(ffff8000211cdd10,ffff8000211cdd48,ffff8000211cdc90,0) at uvm_fault_lower+0x36c sys/uvm/uvm_fault.c:1275
uvm_fault(fffffd806ee9bcf8,20001000,0,1) at uvm_fault+0x248
kpageflttrap(ffff8000211cdea0,20001000) at kpageflttrap+0x209
kerntrap(ffff8000211cdea0) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:318
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
copyin() at copyin+0x53
VOP_IOCTL(fffffd806f68dc68,c0104453,ffff8000211ce290,2,fffffd807f7d8660,ffff800021143268) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264
copyin() at copyin+0x53
vn_ioctl(fffffd806e5ebdb8,c0104453,ffff8000211ce290,ffff800021143268) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:531
sys_ioctl(ffff800021143268,ffff8000211ce3a8,ffff8000211ce400) at sys_ioctl+0x4a2
syscall(ffff8000211ce470) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000211ce470) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffc54e0, count: -16
end of kernel
ddb{0}> machine ddbcpu 1
Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp
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
acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
sched_idle(ffff800020ce8ff0) at sched_idle+0x417 sys/kern/kern_sched.c:178
end trace frame: 0x0, count: -5
ddb{1}>
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