panic: ufsdirhash_lookup: bad offset in hash array
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syzbot
2022年5月15日 23:42:292022/5/15
收件人 syzkaller-o...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 9d7872c9260d Use strncmp() and IFNAMSIZ for if_xname in ve..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=156b5711f00000
kernel config: https://syzkaller.appspot.com/x/.config?x=fe55924c11e64b0a
dashboard link: https://syzkaller.appspot.com/bug?extid=23d9e4f8a92d9fc8c87b
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+23d9e4...@syzkaller.appspotmail.com
panic: ufsdirhash_lookup: bad offset in hash array
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*255810 28133 0 0 0x4000000 0 syz-executor.4
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff8262e73e) at panic+0x161 sys/kern/subr_prf.c:202
ufsdirhash_lookup(fffffd806e91f5a0,ffffffff8260c77c,2,fffffd806e91f64c,ffff80002e83b5b8,0) at ufsdirhash_lookup+0x8b8 sys/ufs/ufs/ufs_dirhash.c:343
ufs_lookup() at ufs_lookup+0xc15 sys/ufs/ufs/ufs_lookup.c:216
VOP_LOOKUP(fffffd8065a62d78,ffff80002e83b758,ffff80002e83b6f8) at VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85
unveil_find_cover(fffffd8065a62d78,ffff800025d0bcf0) at unveil_find_cover+0x130 sys/kern/kern_unveil.c:280
unveil_start_relative(ffff800025d0bcf0,ffff80002e83b978,fffffd8065a62d78) at unveil_start_relative+0xf6 sys/kern/kern_unveil.c:609
namei(ffff80002e83b978) at namei+0x7c9 sys/kern/vfs_lookup.c:232
dorenameat(ffff800025d0bcf0,4,200000c0,ffffff9c,20000140) at dorenameat+0x7b sys/kern/vfs_syscalls.c:2978
syscall(ffff80002e83bb70) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x1294443eb40, count: 4
https://www.openbsd.org/ddb.html describes the minimum info required in bug
reports. Insufficient info makes it difficult to find and fix bugs.
ddb>
ddb> set $lines = 0
ddb> set $maxwidth = 0
ddb> show panic
*cpu0: ufsdirhash_lookup: bad offset in hash array
ddb> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff8262e73e) at panic+0x161 sys/kern/subr_prf.c:202
ufsdirhash_lookup(fffffd806e91f5a0,ffffffff8260c77c,2,fffffd806e91f64c,ffff80002e83b5b8,0) at ufsdirhash_lookup+0x8b8 sys/ufs/ufs/ufs_dirhash.c:343
ufs_lookup() at ufs_lookup+0xc15 sys/ufs/ufs/ufs_lookup.c:216
VOP_LOOKUP(fffffd8065a62d78,ffff80002e83b758,ffff80002e83b6f8) at VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85
unveil_find_cover(fffffd8065a62d78,ffff800025d0bcf0) at unveil_find_cover+0x130 sys/kern/kern_unveil.c:280
unveil_start_relative(ffff800025d0bcf0,ffff80002e83b978,fffffd8065a62d78) at unveil_start_relative+0xf6 sys/kern/kern_unveil.c:609
namei(ffff80002e83b978) at namei+0x7c9 sys/kern/vfs_lookup.c:232
dorenameat(ffff800025d0bcf0,4,200000c0,ffffff9c,20000140) at dorenameat+0x7b sys/kern/vfs_syscalls.c:2978
syscall(ffff80002e83bb70) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x1294443eb40, count: -11
ddb> show registers
rdi 0
rsi 0x1
rbp 0xffff80002e83b3e0
rbx 0
rdx 0
rcx 0
rax 0xffff800025d0bcf0
r8 0x101010101010101
r9 0x8080808080808080
r10 0xeac646875e8f1375
r11 0x98fd0bee09499c33
r12 0
r13 0xffff800000cb3650
r14 0
r15 0x1
rip 0xffffffff81067a58 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff80002e83b3d0
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb> show proc
PROC (syz-executor.4) pid=255810 stat=onproc
flags process=0 proc=4000000<THREAD>
pri=32, usrpri=84, nice=20
forw=0xffffffffffffffff, list=0xffff800025d0b270,0xffff800025d0a2c0
process=0xffff8000215fcfc8 user=0xffff80002e836000, vmspace=0xfffffd80673ff010
estcpu=36, cpticks=0, pctcpu=0.0
user=0, sys=0, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
27032 416514 50518 0 2 0 syz-executor.3
27032 442409 50518 0 2 0x4000000 syz-executor.3
28133 349971 10684 0 2 0 syz-executor.4
28133 481175 10684 0 3 0x4000080 netio syz-executor.4
*28133 255810 10684 0 7 0x4000000 syz-executor.4
81447 513129 86360 0 2 0x2 syz-executor.5
47188 221245 86360 0 2 0x2 syz-executor.0
50518 272602 86360 0 3 0x82 nanoslp syz-executor.3
73605 315808 86360 0 3 0x82 piperd syz-executor.7
62473 309137 86360 0 3 0x82 nanoslp syz-executor.6
10684 176777 86360 0 3 0x82 nanoslp syz-executor.4
11528 486763 0 0 3 0x14200 acct acct
77453 260614 0 0 3 0x14280 nfsidl nfsio
82967 392622 0 0 3 0x14280 nfsidl nfsio
4760 275189 0 0 3 0x14280 nfsidl nfsio
54225 282773 0 0 3 0x14280 nfsidl nfsio
46941 124165 0 0 3 0x14280 nfsidl nfsio
59388 434957 0 0 3 0x14280 nfsidl nfsio
38592 498654 0 0 3 0x14200 bored sosplice
87258 114947 86360 0 3 0x82 nanoslp syz-executor.1
84675 114501 86360 0 3 0x82 nanoslp syz-executor.2
86360 168590 41027 0 3 0x82 thrsleep syz-fuzzer
86360 99861 41027 0 3 0x4000082 nanoslp syz-fuzzer
86360 474936 41027 0 3 0x4000082 thrsleep syz-fuzzer
86360 25531 41027 0 3 0x4000082 thrsleep syz-fuzzer
86360 211919 41027 0 3 0x4000082 thrsleep syz-fuzzer
86360 23592 41027 0 3 0x4000082 kqread syz-fuzzer
86360 231442 41027 0 3 0x4000082 thrsleep syz-fuzzer
86360 46575 41027 0 3 0x4000082 thrsleep syz-fuzzer
86360 136932 41027 0 3 0x4000082 thrsleep syz-fuzzer
41027 519717 26005 0 3 0x10008a sigsusp ksh
26005 246398 71375 0 3 0x9a kqread sshd
55919 24904 1 0 3 0x100083 ttyin getty
71375 370763 1 0 3 0x88 kqread sshd
32033 511853 85825 73 3 0x1100090 kqread syslogd
85825 162328 1 0 3 0x100082 netio syslogd
28143 50159 1 0 3 0x100080 kqread resolvd
16400 421396 64094 77 3 0x100092 kqread dhcpleased
81240 120901 64094 77 3 0x100092 kqread dhcpleased
64094 332829 1 0 3 0x80 kqread dhcpleased
15648 37185 0 0 3 0x14200 bored smr
15282 450977 0 0 2 0x14200 zerothread
38011 219806 0 0 3 0x14200 aiodoned aiodoned
66804 457938 0 0 3 0x14200 syncer update
81925 455841 0 0 3 0x14200 cleaner cleaner
81665 185621 0 0 3 0x14200 reaper reaper
8927 371010 0 0 3 0x14200 pgdaemon pagedaemon
64669 217278 0 0 3 0x14200 bored viomb
21238 122867 0 0 3 0x40014200 acpi0 acpi0
4619 319120 0 0 3 0x14200 bored softnet
60988 422922 0 0 3 0x14200 bored softnet
30173 160134 0 0 3 0x14200 bored softnet
41930 261640 0 0 3 0x14200 bored softnet
53712 522938 0 0 3 0x14200 bored systqmp
49181 48952 0 0 3 0x14200 bored systq
4610 429733 0 0 3 0x40014200 bored softclock
7892 250058 0 0 3 0x40014200 idle0
1 419200 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb> show all locks
No such command
ddb> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10190 6422K 7193K 78643K 27606 0
pcb 13 14K 19K 78643K 4120 0
rtable 223 24K 24K 78643K 2693 0
ifaddr 103 25K 26K 78643K 2203 0
sysctl 2 0K 0K 78643K 2 0
counters 26 17K 17K 78643K 153 0
ioctlops 0 0K 4K 78643K 6458 0
iov 0 0K 24K 78643K 773 0
mount 1 1K 1K 78643K 1 0
log 0 0K 0K 78643K 4 0
vnodes 1784 111K 112K 78643K 10065 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 9K 78643K 79 0
VM map 2 0K 0K 78643K 2 0
sem 19 2K 2K 78643K 109 0
dirhash 99 17K 19K 78643K 13317 0
ACPI 1697 195K 286K 78643K 12548 0
file desc 12 41K 70K 78643K 13419 0
sigio 0 0K 0K 78643K 44 0
proc 60 67K 83K 78643K 2870 0
subproc 104 6K 6K 78643K 455 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 420 0
in_multi 68 4K 6K 78643K 474 0
ether_multi 1 0K 0K 78643K 16 0
mrt 1 0K 0K 78643K 16 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 175 784K 784K 78643K 175 0
exec 0 0K 2K 78643K 3340 0
pfkey data 0 0K 0K 78643K 4 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 326 508K 653K 78643K 75583 0
UVM aobj 131 8K 8K 78643K 133 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 989 0
NDP 12 0K 1K 78643K 211 0
temp 151 4772K 21114K 78643K 64234 0
kqueue 12 18K 26K 78643K 461 0
SYN cache 2 16K 16K 78643K 2 0
ddb> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
rtpcb 120 11563 0 11558 49 46 3 6 0 8 2
rtentry 112 467 0 389 4 0 4 4 0 8 0
unpcb 136 5872 0 5859 47 45 2 5 0 8 1
syncache 296 20 0 20 6 6 0 1 0 8 0
tcpqe 32 350 0 350 5 5 0 1 0 8 0
tcpcb 736 1590 0 1586 53 52 1 8 0 8 0
arp 88 79 0 65 1 0 1 1 0 8 0
ipq 40 3 0 3 1 1 0 1 0 8 0
ipqe 40 9 0 9 1 1 0 1 0 8 0
inpcb 312 8618 0 8611 76 75 1 11 0 8 0
nd6 48 115 0 96 1 0 1 1 0 8 0
pkpcb 40 16 0 16 3 3 0 1 0 8 0
kcovpl 48 35 0 27 1 0 1 1 0 8 0
ppxss 1152 38 0 38 8 8 0 1 0 8 0
pfstscr 40 73 0 66 1 0 1 1 0 8 0
pfrktable 1344 56 0 37 3 1 2 2 0 8 0
pftag 88 10 0 1 1 0 1 1 0 8 0
pfstitem 24 46 0 32 1 0 1 1 0 8 0
pfstkey 112 136 0 134 1 0 1 1 0 8 0
pfstate 336 68 0 61 1 0 1 1 0 8 0
pfrule 1360 2554 0 1786 64 0 64 64 0 8 0
rttmr 64 6 0 6 1 1 0 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 1992 0 1677 40 19 21 30 0 8 0
art_table 32 1993 0 1677 4 1 3 4 0 8 0
art_node 16 462 0 395 1 0 1 1 0 8 0
sysvmsgpl 40 6 0 0 1 0 1 1 0 8 0
semupl 112 5 0 5 3 3 0 1 0 8 0
semapl 112 105 0 88 1 0 1 1 0 8 0
shmpl 112 130 0 2 4 0 4 4 0 8 0
dirhash 1024 4452 0 4406 8 1 7 7 0 8 1
dino2pl 256 28280 0 26766 95 0 95 95 0 8 0
ffsino 240 28281 0 26766 90 0 90 90 0 8 0
nchpl 144 48651 0 47015 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 196167 0 196165 15 13 2 2 0 8 1
vcpupl 1984 29 0 0 4 0 4 4 0 8 0
vmpool 528 34 0 5 2 0 2 2 0 8 0
pfiaddrpl 120 52 0 6 2 0 2 2 0 8 0
kstatmem 264 278 0 254 2 0 2 2 0 8 0
scsiplug 72 6 0 6 2 2 0 1 0 8 0
scxspl 216 137862 0 137862 15 14 1 8 0 8 1
plimitpl 152 832 0 818 1 0 1 1 0 8 0
sigapl 424 13677 0 13627 8 1 7 8 0 8 0
futexpl 64 136024 0 136024 1 0 1 1 0 8 1
knotepl 120 136314 0 136234 34 30 4 17 0 8 0
kqueuepl 184 2408 0 2400 28 27 1 6 0 8 0
pipepl 304 2425 0 2397 58 53 5 8 0 8 2
fdescpl 432 13637 0 13614 5 1 4 4 0 8 0
filepl 120 107317 0 107078 94 83 11 16 0 8 3
lockfpl 104 2297 0 2295 4 3 1 2 0 8 0
lockfspl 48 588 0 586 1 0 1 1 0 8 0
sessionpl 144 50 0 34 1 0 1 1 0 8 0
pgrppl 48 83 0 67 1 0 1 1 0 8 0
ucredpl 96 25098 0 25083 1 0 1 1 0 8 0
zombiepl 144 13630 0 13627 1 0 1 1 0 8 0
processpl 1000 13677 0 13627 10 2 8 9 0 8 0
procpl 672 35086 0 35025 12 5 7 8 0 8 0
sosppl 168 55 0 55 8 8 0 1 0 8 0
sockpl 448 26077 0 26052 328 318 10 26 0 8 7
mcl64k 65536 262 0 262 21 20 1 1 0 8 1
mcl16k 16384 111 0 111 24 24 0 1 0 8 0
mcl12k 12288 259 0 259 22 21 1 1 0 8 1
mcl9k 9216 108 0 108 23 23 0 1 0 8 0
mcl8k 8192 633 0 633 14 13 1 1 0 8 1
mcl4k 4096 1326 0 1325 6 5 1 1 0 8 0
mcl2k2 2112 110 0 110 20 19 1 1 0 8 1
mcl2k 2048 88218 0 88149 28 17 11 16 0 8 1
mtagpl 96 2484 0 1758 22 4 18 18 0 8 0
mbufpl 256 245782 0 244846 377 316 61 201 0 8 0
bufpl 288 26781 0 20374 458 0 458 458 0 8 0
anonpl 24 2440577 0 2424673 149 40 109 125 0 188 0
amapchunkpl 152 253174 0 252635 405 380 25 339 0 158 0
amappl16 200 33569 0 32972 65 32 33 45 0 8 0
amappl15 192 1000 0 999 4 3 1 1 0 8 0
amappl14 184 1052 0 1048 1 0 1 1 0 8 0
amappl13 176 914 0 912 1 0 1 1 0 8 0
amappl12 168 1397 0 1389 1 0 1 1 0 8 0
amappl11 160 3818 0 3801 2 1 1 2 0 8 0
amappl10 152 854 0 849 1 0 1 1 0 8 0
amappl9 144 2959 0 2950 1 0 1 1 0 8 0
amappl8 136 4106 0 4012 5 1 4 4 0 8 0
amappl7 128 3183 0 3171 1 0 1 1 0 8 0
amappl6 120 2878 0 2856 2 1 1 2 0 8 0
amappl5 112 10586 0 10575 1 0 1 1 0 8 0
amappl4 104 6865 0 6831 4 3 1 2 0 8 0
amappl3 96 40263 0 40227 2 0 2 2 0 8 0
amappl2 88 16379 0 16317 3 1 2 3 0 8 0
amappl1 80 319963 0 319426 25 10 15 19 0 8 0
amappl 88 73288 0 73131 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 72 132 0 2 3 0 3 3 0 8 0
uaddrrnd 24 13671 0 13619 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 13671 0 13619 1 0 1 1 0 8 0
vmmpekpl 168 95071 0 95010 3 0 3 3 0 8 0
vmmpepl 168 1307620 0 1305349 220 97 123 143 0 357 0
vmsppl 272 13670 0 13619 7 3 4 4 0 8 0
rwobjpl 24 313546 0 305933 49 1 48 48 0 8 0
pdppl 4096 27348 0 27267 577 484 93 93 0 8 12
pvpl 32 4800824 0 4780908 333 156 177 254 0 265 0
pmappl 216 13670 0 13619 4 0 4 4 0 8 0
extentpl 40 58 0 38 1 0 1 1 0 8 0
phpool 112 2286 0 1362 30 3 27 29 0 8 0
ddb> machine ddbcpu 0
No such command
ddb> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff8262e73e) at panic+0x161 sys/kern/subr_prf.c:202
ufsdirhash_lookup(fffffd806e91f5a0,ffffffff8260c77c,2,fffffd806e91f64c,ffff80002e83b5b8,0) at ufsdirhash_lookup+0x8b8 sys/ufs/ufs/ufs_dirhash.c:343
ufs_lookup() at ufs_lookup+0xc15 sys/ufs/ufs/ufs_lookup.c:216
VOP_LOOKUP(fffffd8065a62d78,ffff80002e83b758,ffff80002e83b6f8) at VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85
unveil_find_cover(fffffd8065a62d78,ffff800025d0bcf0) at unveil_find_cover+0x130 sys/kern/kern_unveil.c:280
unveil_start_relative(ffff800025d0bcf0,ffff80002e83b978,fffffd8065a62d78) at unveil_start_relative+0xf6 sys/kern/kern_unveil.c:609
namei(ffff80002e83b978) at namei+0x7c9 sys/kern/vfs_lookup.c:232
dorenameat(ffff800025d0bcf0,4,200000c0,ffffff9c,20000140) at dorenameat+0x7b sys/kern/vfs_syscalls.c:2978
syscall(ffff80002e83bb70) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x1294443eb40, count: -11
ddb> machine ddbcpu 1
No such command
ddb> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff8262e73e) at panic+0x161 sys/kern/subr_prf.c:202
ufsdirhash_lookup(fffffd806e91f5a0,ffffffff8260c77c,2,fffffd806e91f64c,ffff80002e83b5b8,0) at ufsdirhash_lookup+0x8b8 sys/ufs/ufs/ufs_dirhash.c:343
ufs_lookup() at ufs_lookup+0xc15 sys/ufs/ufs/ufs_lookup.c:216
VOP_LOOKUP(fffffd8065a62d78,ffff80002e83b758,ffff80002e83b6f8) at VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85
unveil_find_cover(fffffd8065a62d78,ffff800025d0bcf0) at unveil_find_cover+0x130 sys/kern/kern_unveil.c:280
unveil_start_relative(ffff800025d0bcf0,ffff80002e83b978,fffffd8065a62d78) at unveil_start_relative+0xf6 sys/kern/kern_unveil.c:609
namei(ffff80002e83b978) at namei+0x7c9 sys/kern/vfs_lookup.c:232
dorenameat(ffff800025d0bcf0,4,200000c0,ffffff9c,20000140) at dorenameat+0x7b sys/kern/vfs_syscalls.c:2978
syscall(ffff80002e83bb70) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x1294443eb40, count: -11
---
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: 9d7872c9260d Use strncmp() and IFNAMSIZ for if_xname in ve..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=156b5711f00000
kernel config: https://syzkaller.appspot.com/x/.config?x=fe55924c11e64b0a
dashboard link: https://syzkaller.appspot.com/bug?extid=23d9e4f8a92d9fc8c87b
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+23d9e4...@syzkaller.appspotmail.com
panic: ufsdirhash_lookup: bad offset in hash array
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*255810 28133 0 0 0x4000000 0 syz-executor.4
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff8262e73e) at panic+0x161 sys/kern/subr_prf.c:202
ufsdirhash_lookup(fffffd806e91f5a0,ffffffff8260c77c,2,fffffd806e91f64c,ffff80002e83b5b8,0) at ufsdirhash_lookup+0x8b8 sys/ufs/ufs/ufs_dirhash.c:343
ufs_lookup() at ufs_lookup+0xc15 sys/ufs/ufs/ufs_lookup.c:216
VOP_LOOKUP(fffffd8065a62d78,ffff80002e83b758,ffff80002e83b6f8) at VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85
unveil_find_cover(fffffd8065a62d78,ffff800025d0bcf0) at unveil_find_cover+0x130 sys/kern/kern_unveil.c:280
unveil_start_relative(ffff800025d0bcf0,ffff80002e83b978,fffffd8065a62d78) at unveil_start_relative+0xf6 sys/kern/kern_unveil.c:609
namei(ffff80002e83b978) at namei+0x7c9 sys/kern/vfs_lookup.c:232
dorenameat(ffff800025d0bcf0,4,200000c0,ffffff9c,20000140) at dorenameat+0x7b sys/kern/vfs_syscalls.c:2978
syscall(ffff80002e83bb70) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x1294443eb40, count: 4
https://www.openbsd.org/ddb.html describes the minimum info required in bug
reports. Insufficient info makes it difficult to find and fix bugs.
ddb>
ddb> set $lines = 0
ddb> set $maxwidth = 0
ddb> show panic
*cpu0: ufsdirhash_lookup: bad offset in hash array
ddb> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff8262e73e) at panic+0x161 sys/kern/subr_prf.c:202
ufsdirhash_lookup(fffffd806e91f5a0,ffffffff8260c77c,2,fffffd806e91f64c,ffff80002e83b5b8,0) at ufsdirhash_lookup+0x8b8 sys/ufs/ufs/ufs_dirhash.c:343
ufs_lookup() at ufs_lookup+0xc15 sys/ufs/ufs/ufs_lookup.c:216
VOP_LOOKUP(fffffd8065a62d78,ffff80002e83b758,ffff80002e83b6f8) at VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85
unveil_find_cover(fffffd8065a62d78,ffff800025d0bcf0) at unveil_find_cover+0x130 sys/kern/kern_unveil.c:280
unveil_start_relative(ffff800025d0bcf0,ffff80002e83b978,fffffd8065a62d78) at unveil_start_relative+0xf6 sys/kern/kern_unveil.c:609
namei(ffff80002e83b978) at namei+0x7c9 sys/kern/vfs_lookup.c:232
dorenameat(ffff800025d0bcf0,4,200000c0,ffffff9c,20000140) at dorenameat+0x7b sys/kern/vfs_syscalls.c:2978
syscall(ffff80002e83bb70) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x1294443eb40, count: -11
ddb> show registers
rdi 0
rsi 0x1
rbp 0xffff80002e83b3e0
rbx 0
rdx 0
rcx 0
rax 0xffff800025d0bcf0
r8 0x101010101010101
r9 0x8080808080808080
r10 0xeac646875e8f1375
r11 0x98fd0bee09499c33
r12 0
r13 0xffff800000cb3650
r14 0
r15 0x1
rip 0xffffffff81067a58 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff80002e83b3d0
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb> show proc
PROC (syz-executor.4) pid=255810 stat=onproc
flags process=0 proc=4000000<THREAD>
pri=32, usrpri=84, nice=20
forw=0xffffffffffffffff, list=0xffff800025d0b270,0xffff800025d0a2c0
process=0xffff8000215fcfc8 user=0xffff80002e836000, vmspace=0xfffffd80673ff010
estcpu=36, cpticks=0, pctcpu=0.0
user=0, sys=0, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
27032 416514 50518 0 2 0 syz-executor.3
27032 442409 50518 0 2 0x4000000 syz-executor.3
28133 349971 10684 0 2 0 syz-executor.4
28133 481175 10684 0 3 0x4000080 netio syz-executor.4
*28133 255810 10684 0 7 0x4000000 syz-executor.4
81447 513129 86360 0 2 0x2 syz-executor.5
47188 221245 86360 0 2 0x2 syz-executor.0
50518 272602 86360 0 3 0x82 nanoslp syz-executor.3
73605 315808 86360 0 3 0x82 piperd syz-executor.7
62473 309137 86360 0 3 0x82 nanoslp syz-executor.6
10684 176777 86360 0 3 0x82 nanoslp syz-executor.4
11528 486763 0 0 3 0x14200 acct acct
77453 260614 0 0 3 0x14280 nfsidl nfsio
82967 392622 0 0 3 0x14280 nfsidl nfsio
4760 275189 0 0 3 0x14280 nfsidl nfsio
54225 282773 0 0 3 0x14280 nfsidl nfsio
46941 124165 0 0 3 0x14280 nfsidl nfsio
59388 434957 0 0 3 0x14280 nfsidl nfsio
38592 498654 0 0 3 0x14200 bored sosplice
87258 114947 86360 0 3 0x82 nanoslp syz-executor.1
84675 114501 86360 0 3 0x82 nanoslp syz-executor.2
86360 168590 41027 0 3 0x82 thrsleep syz-fuzzer
86360 99861 41027 0 3 0x4000082 nanoslp syz-fuzzer
86360 474936 41027 0 3 0x4000082 thrsleep syz-fuzzer
86360 25531 41027 0 3 0x4000082 thrsleep syz-fuzzer
86360 211919 41027 0 3 0x4000082 thrsleep syz-fuzzer
86360 23592 41027 0 3 0x4000082 kqread syz-fuzzer
86360 231442 41027 0 3 0x4000082 thrsleep syz-fuzzer
86360 46575 41027 0 3 0x4000082 thrsleep syz-fuzzer
86360 136932 41027 0 3 0x4000082 thrsleep syz-fuzzer
41027 519717 26005 0 3 0x10008a sigsusp ksh
26005 246398 71375 0 3 0x9a kqread sshd
55919 24904 1 0 3 0x100083 ttyin getty
71375 370763 1 0 3 0x88 kqread sshd
32033 511853 85825 73 3 0x1100090 kqread syslogd
85825 162328 1 0 3 0x100082 netio syslogd
28143 50159 1 0 3 0x100080 kqread resolvd
16400 421396 64094 77 3 0x100092 kqread dhcpleased
81240 120901 64094 77 3 0x100092 kqread dhcpleased
64094 332829 1 0 3 0x80 kqread dhcpleased
15648 37185 0 0 3 0x14200 bored smr
15282 450977 0 0 2 0x14200 zerothread
38011 219806 0 0 3 0x14200 aiodoned aiodoned
66804 457938 0 0 3 0x14200 syncer update
81925 455841 0 0 3 0x14200 cleaner cleaner
81665 185621 0 0 3 0x14200 reaper reaper
8927 371010 0 0 3 0x14200 pgdaemon pagedaemon
64669 217278 0 0 3 0x14200 bored viomb
21238 122867 0 0 3 0x40014200 acpi0 acpi0
4619 319120 0 0 3 0x14200 bored softnet
60988 422922 0 0 3 0x14200 bored softnet
30173 160134 0 0 3 0x14200 bored softnet
41930 261640 0 0 3 0x14200 bored softnet
53712 522938 0 0 3 0x14200 bored systqmp
49181 48952 0 0 3 0x14200 bored systq
4610 429733 0 0 3 0x40014200 bored softclock
7892 250058 0 0 3 0x40014200 idle0
1 419200 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb> show all locks
No such command
ddb> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10190 6422K 7193K 78643K 27606 0
pcb 13 14K 19K 78643K 4120 0
rtable 223 24K 24K 78643K 2693 0
ifaddr 103 25K 26K 78643K 2203 0
sysctl 2 0K 0K 78643K 2 0
counters 26 17K 17K 78643K 153 0
ioctlops 0 0K 4K 78643K 6458 0
iov 0 0K 24K 78643K 773 0
mount 1 1K 1K 78643K 1 0
log 0 0K 0K 78643K 4 0
vnodes 1784 111K 112K 78643K 10065 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 9K 78643K 79 0
VM map 2 0K 0K 78643K 2 0
sem 19 2K 2K 78643K 109 0
dirhash 99 17K 19K 78643K 13317 0
ACPI 1697 195K 286K 78643K 12548 0
file desc 12 41K 70K 78643K 13419 0
sigio 0 0K 0K 78643K 44 0
proc 60 67K 83K 78643K 2870 0
subproc 104 6K 6K 78643K 455 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 420 0
in_multi 68 4K 6K 78643K 474 0
ether_multi 1 0K 0K 78643K 16 0
mrt 1 0K 0K 78643K 16 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 175 784K 784K 78643K 175 0
exec 0 0K 2K 78643K 3340 0
pfkey data 0 0K 0K 78643K 4 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 326 508K 653K 78643K 75583 0
UVM aobj 131 8K 8K 78643K 133 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 989 0
NDP 12 0K 1K 78643K 211 0
temp 151 4772K 21114K 78643K 64234 0
kqueue 12 18K 26K 78643K 461 0
SYN cache 2 16K 16K 78643K 2 0
ddb> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
rtpcb 120 11563 0 11558 49 46 3 6 0 8 2
rtentry 112 467 0 389 4 0 4 4 0 8 0
unpcb 136 5872 0 5859 47 45 2 5 0 8 1
syncache 296 20 0 20 6 6 0 1 0 8 0
tcpqe 32 350 0 350 5 5 0 1 0 8 0
tcpcb 736 1590 0 1586 53 52 1 8 0 8 0
arp 88 79 0 65 1 0 1 1 0 8 0
ipq 40 3 0 3 1 1 0 1 0 8 0
ipqe 40 9 0 9 1 1 0 1 0 8 0
inpcb 312 8618 0 8611 76 75 1 11 0 8 0
nd6 48 115 0 96 1 0 1 1 0 8 0
pkpcb 40 16 0 16 3 3 0 1 0 8 0
kcovpl 48 35 0 27 1 0 1 1 0 8 0
ppxss 1152 38 0 38 8 8 0 1 0 8 0
pfstscr 40 73 0 66 1 0 1 1 0 8 0
pfrktable 1344 56 0 37 3 1 2 2 0 8 0
pftag 88 10 0 1 1 0 1 1 0 8 0
pfstitem 24 46 0 32 1 0 1 1 0 8 0
pfstkey 112 136 0 134 1 0 1 1 0 8 0
pfstate 336 68 0 61 1 0 1 1 0 8 0
pfrule 1360 2554 0 1786 64 0 64 64 0 8 0
rttmr 64 6 0 6 1 1 0 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 1992 0 1677 40 19 21 30 0 8 0
art_table 32 1993 0 1677 4 1 3 4 0 8 0
art_node 16 462 0 395 1 0 1 1 0 8 0
sysvmsgpl 40 6 0 0 1 0 1 1 0 8 0
semupl 112 5 0 5 3 3 0 1 0 8 0
semapl 112 105 0 88 1 0 1 1 0 8 0
shmpl 112 130 0 2 4 0 4 4 0 8 0
dirhash 1024 4452 0 4406 8 1 7 7 0 8 1
dino2pl 256 28280 0 26766 95 0 95 95 0 8 0
ffsino 240 28281 0 26766 90 0 90 90 0 8 0
nchpl 144 48651 0 47015 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 196167 0 196165 15 13 2 2 0 8 1
vcpupl 1984 29 0 0 4 0 4 4 0 8 0
vmpool 528 34 0 5 2 0 2 2 0 8 0
pfiaddrpl 120 52 0 6 2 0 2 2 0 8 0
kstatmem 264 278 0 254 2 0 2 2 0 8 0
scsiplug 72 6 0 6 2 2 0 1 0 8 0
scxspl 216 137862 0 137862 15 14 1 8 0 8 1
plimitpl 152 832 0 818 1 0 1 1 0 8 0
sigapl 424 13677 0 13627 8 1 7 8 0 8 0
futexpl 64 136024 0 136024 1 0 1 1 0 8 1
knotepl 120 136314 0 136234 34 30 4 17 0 8 0
kqueuepl 184 2408 0 2400 28 27 1 6 0 8 0
pipepl 304 2425 0 2397 58 53 5 8 0 8 2
fdescpl 432 13637 0 13614 5 1 4 4 0 8 0
filepl 120 107317 0 107078 94 83 11 16 0 8 3
lockfpl 104 2297 0 2295 4 3 1 2 0 8 0
lockfspl 48 588 0 586 1 0 1 1 0 8 0
sessionpl 144 50 0 34 1 0 1 1 0 8 0
pgrppl 48 83 0 67 1 0 1 1 0 8 0
ucredpl 96 25098 0 25083 1 0 1 1 0 8 0
zombiepl 144 13630 0 13627 1 0 1 1 0 8 0
processpl 1000 13677 0 13627 10 2 8 9 0 8 0
procpl 672 35086 0 35025 12 5 7 8 0 8 0
sosppl 168 55 0 55 8 8 0 1 0 8 0
sockpl 448 26077 0 26052 328 318 10 26 0 8 7
mcl64k 65536 262 0 262 21 20 1 1 0 8 1
mcl16k 16384 111 0 111 24 24 0 1 0 8 0
mcl12k 12288 259 0 259 22 21 1 1 0 8 1
mcl9k 9216 108 0 108 23 23 0 1 0 8 0
mcl8k 8192 633 0 633 14 13 1 1 0 8 1
mcl4k 4096 1326 0 1325 6 5 1 1 0 8 0
mcl2k2 2112 110 0 110 20 19 1 1 0 8 1
mcl2k 2048 88218 0 88149 28 17 11 16 0 8 1
mtagpl 96 2484 0 1758 22 4 18 18 0 8 0
mbufpl 256 245782 0 244846 377 316 61 201 0 8 0
bufpl 288 26781 0 20374 458 0 458 458 0 8 0
anonpl 24 2440577 0 2424673 149 40 109 125 0 188 0
amapchunkpl 152 253174 0 252635 405 380 25 339 0 158 0
amappl16 200 33569 0 32972 65 32 33 45 0 8 0
amappl15 192 1000 0 999 4 3 1 1 0 8 0
amappl14 184 1052 0 1048 1 0 1 1 0 8 0
amappl13 176 914 0 912 1 0 1 1 0 8 0
amappl12 168 1397 0 1389 1 0 1 1 0 8 0
amappl11 160 3818 0 3801 2 1 1 2 0 8 0
amappl10 152 854 0 849 1 0 1 1 0 8 0
amappl9 144 2959 0 2950 1 0 1 1 0 8 0
amappl8 136 4106 0 4012 5 1 4 4 0 8 0
amappl7 128 3183 0 3171 1 0 1 1 0 8 0
amappl6 120 2878 0 2856 2 1 1 2 0 8 0
amappl5 112 10586 0 10575 1 0 1 1 0 8 0
amappl4 104 6865 0 6831 4 3 1 2 0 8 0
amappl3 96 40263 0 40227 2 0 2 2 0 8 0
amappl2 88 16379 0 16317 3 1 2 3 0 8 0
amappl1 80 319963 0 319426 25 10 15 19 0 8 0
amappl 88 73288 0 73131 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 72 132 0 2 3 0 3 3 0 8 0
uaddrrnd 24 13671 0 13619 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 13671 0 13619 1 0 1 1 0 8 0
vmmpekpl 168 95071 0 95010 3 0 3 3 0 8 0
vmmpepl 168 1307620 0 1305349 220 97 123 143 0 357 0
vmsppl 272 13670 0 13619 7 3 4 4 0 8 0
rwobjpl 24 313546 0 305933 49 1 48 48 0 8 0
pdppl 4096 27348 0 27267 577 484 93 93 0 8 12
pvpl 32 4800824 0 4780908 333 156 177 254 0 265 0
pmappl 216 13670 0 13619 4 0 4 4 0 8 0
extentpl 40 58 0 38 1 0 1 1 0 8 0
phpool 112 2286 0 1362 30 3 27 29 0 8 0
ddb> machine ddbcpu 0
No such command
ddb> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff8262e73e) at panic+0x161 sys/kern/subr_prf.c:202
ufsdirhash_lookup(fffffd806e91f5a0,ffffffff8260c77c,2,fffffd806e91f64c,ffff80002e83b5b8,0) at ufsdirhash_lookup+0x8b8 sys/ufs/ufs/ufs_dirhash.c:343
ufs_lookup() at ufs_lookup+0xc15 sys/ufs/ufs/ufs_lookup.c:216
VOP_LOOKUP(fffffd8065a62d78,ffff80002e83b758,ffff80002e83b6f8) at VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85
unveil_find_cover(fffffd8065a62d78,ffff800025d0bcf0) at unveil_find_cover+0x130 sys/kern/kern_unveil.c:280
unveil_start_relative(ffff800025d0bcf0,ffff80002e83b978,fffffd8065a62d78) at unveil_start_relative+0xf6 sys/kern/kern_unveil.c:609
namei(ffff80002e83b978) at namei+0x7c9 sys/kern/vfs_lookup.c:232
dorenameat(ffff800025d0bcf0,4,200000c0,ffffff9c,20000140) at dorenameat+0x7b sys/kern/vfs_syscalls.c:2978
syscall(ffff80002e83bb70) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x1294443eb40, count: -11
ddb> machine ddbcpu 1
No such command
ddb> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff8262e73e) at panic+0x161 sys/kern/subr_prf.c:202
ufsdirhash_lookup(fffffd806e91f5a0,ffffffff8260c77c,2,fffffd806e91f64c,ffff80002e83b5b8,0) at ufsdirhash_lookup+0x8b8 sys/ufs/ufs/ufs_dirhash.c:343
ufs_lookup() at ufs_lookup+0xc15 sys/ufs/ufs/ufs_lookup.c:216
VOP_LOOKUP(fffffd8065a62d78,ffff80002e83b758,ffff80002e83b6f8) at VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85
unveil_find_cover(fffffd8065a62d78,ffff800025d0bcf0) at unveil_find_cover+0x130 sys/kern/kern_unveil.c:280
unveil_start_relative(ffff800025d0bcf0,ffff80002e83b978,fffffd8065a62d78) at unveil_start_relative+0xf6 sys/kern/kern_unveil.c:609
namei(ffff80002e83b978) at namei+0x7c9 sys/kern/vfs_lookup.c:232
dorenameat(ffff800025d0bcf0,4,200000c0,ffffff9c,20000140) at dorenameat+0x7b sys/kern/vfs_syscalls.c:2978
syscall(ffff80002e83bb70) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x1294443eb40, count: -11
---
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syzbot
2022年8月13日 23:42:232022/8/13
收件人 syzkaller-o...@googlegroups.com
Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.
Crashes did not happen for a while, no reproducer and no activity.
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