uvm_fault: ufs_symlink
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syzbot
May 21, 2024, 9:45:32 AMMay 21
to syzkaller-o...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: d0fe8eba4c8c Introduce some macros for static intr. aggr. ..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=14c06634980000
kernel config: https://syzkaller.appspot.com/x/.config?x=1bc15e68cd2a49e5
dashboard link: https://syzkaller.appspot.com/bug?extid=ca7c8e61d26701e9a126
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/cc8f81ebe7e6/disk-d0fe8eba.raw.xz
bsd.gdb: https://storage.googleapis.com/syzbot-assets/be184ec5fae1/bsd-d0fe8eba.gdb.xz
kernel image: https://storage.googleapis.com/syzbot-assets/2e8434b94b7b/kernel-d0fe8eba.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+ca7c8e...@syzkaller.appspotmail.com
uvm_fault(0xfffffd8069084d80, 0x18, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at ufs_symlink+0xa2: movq 0x18(%rbx),%r14
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*177924 64706 0 0x8000000 0x4000000 0 syz-executor.4
ufs_symlink(ffff8000329b3b10) at ufs_symlink+0xa2 sys/ufs/ufs/ufs_vnops.c:1304
VOP_SYMLINK(fffffd80776197d8,ffff8000329b3c90,ffff8000329b3cc0,ffff8000329b3bc0,ffff80002a676000) at VOP_SYMLINK+0xd7 sys/kern/vfs_vops.c:432
dosymlinkat(ffff80002a678cf0,20000040,9,20000340) at dosymlinkat+0x158 sys/kern/vfs_syscalls.c:1810
syscall(ffff8000329b3e40) at syscall+0x72a sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xbd5504fb090, count: 10
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: uvm_fault(0xfffffd8069084d80, 0x18, 0, 1) -> e
ddb> trace
ufs_symlink(ffff8000329b3b10) at ufs_symlink+0xa2 sys/ufs/ufs/ufs_vnops.c:1304
VOP_SYMLINK(fffffd80776197d8,ffff8000329b3c90,ffff8000329b3cc0,ffff8000329b3bc0,ffff80002a676000) at VOP_SYMLINK+0xd7 sys/kern/vfs_vops.c:432
dosymlinkat(ffff80002a678cf0,20000040,9,20000340) at dosymlinkat+0x158 sys/kern/vfs_syscalls.c:1810
syscall(ffff8000329b3e40) at syscall+0x72a sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xbd5504fb090, count: -5
ddb> show registers
rdi 0xffff80002a676000
rsi 0xd2a
rbp 0xffff8000329b3b00
rbx 0
rdx 0x7
rcx 0xffcf9a939699d0d1
rax 0x7
r8 0x101010101010101
r9 0x8080808080808080
r10 0xf180eaa840c72b8f
r11 0x565d5687a3f0aa30
r12 0x7
r13 0xfffffd8077619898
r14 0xffff8000329b3c90
r15 0xffff8000329b3b10
rip 0xffffffff81838802 ufs_symlink+0xa2
cs 0x8
rflags 0x10246 __ALIGN_SIZE+0xf246
rsp 0xffff8000329b3ab0
ss 0
ufs_symlink+0xa2: movq 0x18(%rbx),%r14
ddb> show proc
PROC (syz-executor.4) tid=177924 pid=64706 tcnt=3 stat=onproc
flags process=8000000 proc=4000000<THREAD>
runpri=17, usrpri=85, slppri=17, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff80002d5242c0,0xffff80002a679740
process=0xffff800035c8f2c8 user=0xffff8000329ae000, vmspace=0xfffffd8069084d80
estcpu=35, cpticks=3, pctcpu=0.0, user=0, sys=1, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
67148 160599 50272 0 2 0x8000000 syz-executor.3
67148 229379 50272 0 3 0xc000080 ttyout syz-executor.3
62371 94373 44939 0 2 0x8000000 syz-executor.6
62371 220562 44939 0 3 0xc000080 fsleep syz-executor.6
1039 36826 31046 0 2 0x8000000 syz-executor.0
1039 169439 31046 0 2 0xc000000 syz-executor.0
75811 516679 46640 0 3 0x8000080 nanoslp syz-executor.5
75811 484668 46640 0 3 0xc000080 kqpoll syz-executor.5
75811 379320 46640 0 3 0xc000080 fsleep syz-executor.5
64706 520815 27069 0 2 0x8000000 syz-executor.4
*64706 177924 27069 0 7 0xc000000 syz-executor.4
64706 18520 27069 0 3 0xc000080 fsleep syz-executor.4
27069 281291 52867 0 3 0x8000082 nanoslp syz-executor.4
46640 288579 52867 0 3 0x8000082 nanoslp syz-executor.5
99857 399748 52867 0 2 0x8000482 syz-executor.2
50272 399437 52867 0 3 0x8000082 nanoslp syz-executor.3
31046 109664 52867 0 3 0x8000082 nanoslp syz-executor.0
81787 326285 52867 0 2 0x8000482 syz-executor.7
44939 107949 52867 0 3 0x8000082 nanoslp syz-executor.6
68371 387417 0 0 3 0x14200 acct acct
47923 340179 24788 0 3 0x18100082 netio ndp
24788 75828 1 0 3 0x810008a sigsusp sh
27665 196372 0 0 3 0x14280 nfsidl nfsio
92475 43279 0 0 3 0x14280 nfsidl nfsio
73007 371201 0 0 3 0x14280 nfsidl nfsio
9766 308868 0 0 3 0x14280 nfsidl nfsio
93523 447553 0 0 3 0x14280 nfsidl nfsio
92498 140372 0 0 3 0x14280 nfsidl nfsio
51042 426192 0 0 3 0x14280 nfsidl nfsio
56011 367798 0 0 3 0x14280 nfsidl nfsio
91931 468018 0 0 3 0x14280 nfsidl nfsio
37907 447349 0 0 3 0x14280 nfsidl nfsio
63203 205328 0 0 3 0x14280 nfsidl nfsio
7121 62287 0 0 3 0x14280 nfsidl nfsio
26204 279063 0 0 3 0x14280 nfsidl nfsio
45100 235472 0 0 3 0x14280 nfsidl nfsio
33986 169607 0 0 3 0x14280 nfsidl nfsio
8798 305580 0 0 3 0x14280 nfsidl nfsio
45339 232146 0 0 3 0x14280 nfsidl nfsio
50450 260711 0 0 3 0x14280 nfsidl nfsio
66711 187880 0 0 3 0x14280 nfsidl nfsio
32912 364412 0 0 3 0x14280 nfsidl nfsio
4192 102918 1 0 3 0x18100083 ttyin getty
13830 105392 0 0 3 0x14200 bored sosplice
52867 371629 7000 0 3 0x1a000082 thrsleep syz-fuzzer
52867 401809 7000 0 3 0x1e000082 thrsleep syz-fuzzer
52867 421417 7000 0 3 0x1e000082 thrsleep syz-fuzzer
52867 477202 7000 0 3 0x1e000082 wait syz-fuzzer
52867 15697 7000 0 3 0x1e000082 wait syz-fuzzer
52867 37067 7000 0 3 0x1e000082 kqread syz-fuzzer
52867 31621 7000 0 3 0x1e000082 wait syz-fuzzer
52867 465040 7000 0 3 0x1e000082 wait syz-fuzzer
52867 183890 7000 0 3 0x1e000082 wait syz-fuzzer
52867 189130 7000 0 3 0x1e000082 wait syz-fuzzer
52867 105110 7000 0 3 0x1e000082 thrsleep syz-fuzzer
52867 83419 7000 0 3 0x1e000082 thrsleep syz-fuzzer
52867 38266 7000 0 3 0x1e000082 wait syz-fuzzer
52867 288358 7000 0 3 0x1e000082 wait syz-fuzzer
7000 137107 65870 0 3 0x810008a sigsusp ksh
65870 137858 25305 0 3 0x1800009a kqread sshd
25305 323096 1 0 3 0x18000088 kqread sshd
49534 341857 4968 73 2 0x19100010 syslogd
4968 315422 1 0 3 0x18100082 sbwait syslogd
23588 394402 1 0 3 0x18100080 kqread resolvd
60788 264494 3038 77 3 0x18100092 kqread dhcpleased
33429 65804 3038 77 3 0x18100092 kqread dhcpleased
3038 434465 1 0 3 0x18000080 kqread dhcpleased
9605 292443 0 0 3 0x14200 bored smr
41986 202323 0 0 2 0x14200 zerothread
19676 250367 0 0 3 0x14200 aiodoned aiodoned
50335 506059 0 0 3 0x14200 syncer update
65980 173001 0 0 3 0x14200 cleaner cleaner
81134 449790 0 0 3 0x14200 reaper reaper
14413 391106 0 0 3 0x14200 pgdaemon pagedaemon
62841 390302 0 0 3 0x14200 bored viomb
76753 286426 0 0 3 0x40014200 acpi0 acpi0
96024 366888 0 0 3 0x14200 bored softnet3
25226 290089 0 0 3 0x14200 bored softnet2
72323 419219 0 0 3 0x14200 bored softnet1
25567 315166 0 0 2 0x14200 softnet0
923 82240 0 0 3 0x14200 bored systqmp
67458 280894 0 0 3 0x14200 bored systq
11427 391 0 0 2 0x40014200 softclock
35881 138996 0 0 3 0x40014200 idle0
1 203547 0 0 3 0x8000082 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 10204 6683K 10571K 166960K 14265 0
pcb 17 16K 18K 166960K 231 0
rtable 218 8K 9K 166960K 1960 0
pf 33 9K 10K 166960K 160 0
ifaddr 44 12K 12K 166960K 258 0
ifgroup 58 2K 2K 166960K 291 0
sysctl 3 0K 0K 166960K 3 0
counters 32 17K 17K 166960K 91 0
ioctlops 0 0K 2K 166960K 171 0
iov 0 0K 18K 166960K 91 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1417 89K 89K 166960K 3282 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 9K 166960K 27 0
VM map 2 1K 1K 166960K 2 0
sem 12 1K 1K 166960K 53 0
dirhash 12 2K 2K 166960K 51 0
ACPI 1697 195K 286K 166960K 12548 0
file desc 17 61K 101K 166960K 2009 0
sigio 1 0K 0K 166960K 28 0
proc 58 59K 116K 166960K 1857 0
subproc 117 7K 8K 166960K 793 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 224 0
in_multi 98 7K 7K 166960K 642 0
ether_multi 1 0K 0K 166960K 16 0
mrt 1 0K 0K 166960K 3 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 85 387K 387K 166960K 85 0
exec 0 0K 1K 166960K 1211 0
pfkey data 0 0K 0K 166960K 3 0
tdb 3 0K 0K 166960K 3 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 285 97K 116K 166960K 17343 0
UVM aobj 56 7K 7K 166960K 61 0
pinsyscall 38 76K 102K 166960K 4393 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 1K 166960K 71 0
NDP 13 0K 2K 166960K 180 0
temp 77 6812K 6940K 166960K 94537 0
kqueue 13 20K 26K 166960K 183 0
SYN cache 2 16K 16K 166960K 2 0
ddb> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
rtpcb 120 272 0 267 1 0 1 1 0 8 0
rtentry 112 696 0 599 4 0 4 4 0 8 1
unpcb 144 981 0 966 2 1 1 2 0 8 0
syncache 336 9 0 9 2 1 1 1 0 8 1
sackhl 24 2 0 2 1 0 1 1 0 8 1
tcpqe 32 5 0 5 1 0 1 1 0 8 1
tcpcb 808 451 0 445 6 4 2 5 0 8 1
arp 88 134 0 117 1 0 1 1 0 8 0
ipq 40 6 0 6 1 0 1 1 0 8 1
ipqe 40 97 0 97 1 0 1 1 0 8 1
inpcb 352 1792 0 1777 15 12 3 13 0 8 1
nd6 104 174 0 149 1 0 1 1 0 8 0
pkpcb 40 13 0 13 2 1 1 1 0 8 1
kcovpl 48 61 0 52 1 0 1 1 0 8 0
ppxss 1072 6 0 6 2 1 1 1 0 8 1
art_heap8 4096 2 0 0 2 0 2 2 0 8 0
art_heap4 256 2706 0 2250 56 27 29 30 0 8 0
art_table 32 2708 0 2250 4 0 4 4 0 8 0
art_node 16 689 0 602 1 0 1 1 0 8 0
sysvmsgpl 40 9 0 4 1 0 1 1 0 8 0
semupl 112 4 0 4 1 1 0 1 0 8 0
semapl 112 40 0 30 1 0 1 1 0 8 0
shmpl 112 58 0 5 2 0 2 2 0 8 0
dirhash 1024 43 0 26 3 0 3 3 0 8 0
dino2pl 256 3932 0 2415 96 0 96 96 0 8 0
ffsino 240 3932 0 2415 90 0 90 90 0 8 0
nchpl 144 6356 0 4623 67 0 67 67 0 8 0
uvmvnodes 80 5574 0 0 114 0 114 114 0 8 0
vnodes 216 5574 0 0 310 0 310 310 0 8 0
vnodes: pool(0xffffffff82d3acb8:vnodes): page inconsistency: page 0x0; at page head addr 0xfffffd80684f5f90 (p 0xfffffd80684f5000)
namei 1024 26746 0 26745 4 2 2 3 0 8 1
vcpupl 3904 5 0 1 1 0 1 1 0 8 0
vmpool 664 16 0 12 1 0 1 1 0 8 0
kstatmem 264 144 0 118 2 0 2 2 0 8 0
scsiplug 72 5 0 5 2 1 1 1 0 8 1
scxspl 216 43641 0 43641 9 7 2 8 1 8 2
plimitpl 152 303 0 287 1 0 1 1 0 8 0
sigapl 424 2228 0 2160 9 0 9 9 0 8 0
futexpl 64 25650 0 25647 1 0 1 1 0 8 0
knotepl 120 9541 0 9459 22 10 12 15 0 8 8
kqueuepl 184 398 0 387 1 0 1 1 0 8 0
pipepl 288 517 0 487 5 0 5 5 0 8 2
fdescpl 432 2189 0 2161 5 0 5 5 0 8 0
filepl 120 13111 0 12836 15 5 10 14 0 8 1
lockfpl 104 504 0 501 1 0 1 1 0 8 0
lockfspl 48 226 0 223 1 0 1 1 0 8 0
sessionpl 144 70 0 53 1 0 1 1 0 8 0
pgrppl 48 84 0 67 1 0 1 1 0 8 0
ucredpl 104 1747 0 1737 1 0 1 1 0 8 0
zombiepl 144 2163 0 2160 1 0 1 1 0 8 0
processpl 1080 2228 0 2160 6 0 6 6 0 8 0
procpl 656 3740 0 3652 9 0 9 9 0 8 1
sosppl 168 5 0 5 2 1 1 1 0 8 1
sockpl 504 3075 0 3043 24 17 7 20 0 8 2
mcl64k 65536 12 0 12 2 1 1 1 0 8 1
mcl16k 16384 1 0 1 1 0 1 1 0 8 1
mcl12k 12288 4 0 4 2 1 1 1 0 8 1
mcl8k 8192 48 0 48 2 1 1 1 0 8 1
mcl4k 4096 10 0 10 1 0 1 1 0 8 1
mcl2k 2048 27705 0 27609 46 25 21 38 0 8 8
mtagpl 96 49 0 46 1 0 1 1 0 8 0
mbufpl 256 69167 0 68943 115 93 22 63 0 8 1
bufpl 280 11212 0 3088 581 0 581 581 0 8 0
anonpl 24 419046 0 412901 113 46 67 95 0 188 4
amapchunkpl 152 57827 0 57183 59 21 38 49 0 158 10
amappl16 200 9533 0 9385 39 18 21 21 0 8 9
amappl15 192 12 0 11 1 0 1 1 0 8 0
amappl14 184 302 0 289 2 1 1 2 0 8 0
amappl13 176 6 0 6 1 1 0 1 0 8 0
amappl12 168 3512 0 3483 2 0 2 2 0 8 0
amappl11 160 53 0 43 1 0 1 1 0 8 0
amappl10 152 100 0 90 1 0 1 1 0 8 0
amappl9 144 143 0 142 1 0 1 1 0 8 0
amappl8 136 169 0 139 2 0 2 2 0 8 0
amappl7 128 76 0 62 1 0 1 1 0 8 0
amappl6 120 927 0 912 2 1 1 2 0 8 0
amappl5 112 348 0 336 1 0 1 1 0 8 0
amappl4 104 847 0 815 3 1 2 2 0 8 1
amappl3 96 11031 0 10952 3 0 3 3 0 8 0
amappl2 88 2833 0 2757 3 1 2 3 0 8 0
amappl1 80 18226 0 17711 25 11 14 22 0 8 1
amappl 88 16367 0 16177 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 60 0 5 1 0 1 1 0 8 0
uaddrrnd 24 2205 0 2173 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 2205 0 2173 1 0 1 1 0 8 0
vmmpekpl 168 20521 0 20463 3 0 3 3 0 8 0
vmmpepl 168 166680 0 164797 134 27 107 112 0 357 12
vmsppl 344 2204 0 2173 4 0 4 4 0 8 0
rwobjpl 24 50302 0 43547 43 0 43 43 0 8 0
pdppl 4096 4416 0 4350 275 204 71 87 0 8 5
pvpl 32 1060062 0 1047470 416 240 176 359 0 265 37
pmappl 216 2204 0 2173 3 0 3 3 0 8 0
extentpl 40 56 0 38 1 0 1 1 0 8 0
phpool 112 733 0 377 12 0 12 12 0 8 0
ddb> machine ddbcpu 0
No such command
ddb> trace
ufs_symlink(ffff8000329b3b10) at ufs_symlink+0xa2 sys/ufs/ufs/ufs_vnops.c:1304
VOP_SYMLINK(fffffd80776197d8,ffff8000329b3c90,ffff8000329b3cc0,ffff8000329b3bc0,ffff80002a676000) at VOP_SYMLINK+0xd7 sys/kern/vfs_vops.c:432
dosymlinkat(ffff80002a678cf0,20000040,9,20000340) at dosymlinkat+0x158 sys/kern/vfs_syscalls.c:1810
syscall(ffff8000329b3e40) at syscall+0x72a sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xbd5504fb090, count: -5
ddb> machine ddbcpu 1
No such command
ddb> trace
ufs_symlink(ffff8000329b3b10) at ufs_symlink+0xa2 sys/ufs/ufs/ufs_vnops.c:1304
VOP_SYMLINK(fffffd80776197d8,ffff8000329b3c90,ffff8000329b3cc0,ffff8000329b3bc0,ffff80002a676000) at VOP_SYMLINK+0xd7 sys/kern/vfs_vops.c:432
dosymlinkat(ffff80002a678cf0,20000040,9,20000340) at dosymlinkat+0x158 sys/kern/vfs_syscalls.c:1810
syscall(ffff8000329b3e40) at syscall+0x72a sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xbd5504fb090, count: -5
---
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:
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If the report is already addressed, let syzbot know by replying with:
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If you want to overwrite report's subsystems, reply with:
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(See the list of subsystem names on the web dashboard)
If the report is a duplicate of another one, reply with:
#syz dup: exact-subject-of-another-report
If you want to undo deduplication, reply with:
#syz undup
syzbot found the following issue on:
HEAD commit: d0fe8eba4c8c Introduce some macros for static intr. aggr. ..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=14c06634980000
kernel config: https://syzkaller.appspot.com/x/.config?x=1bc15e68cd2a49e5
dashboard link: https://syzkaller.appspot.com/bug?extid=ca7c8e61d26701e9a126
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/cc8f81ebe7e6/disk-d0fe8eba.raw.xz
bsd.gdb: https://storage.googleapis.com/syzbot-assets/be184ec5fae1/bsd-d0fe8eba.gdb.xz
kernel image: https://storage.googleapis.com/syzbot-assets/2e8434b94b7b/kernel-d0fe8eba.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+ca7c8e...@syzkaller.appspotmail.com
uvm_fault(0xfffffd8069084d80, 0x18, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at ufs_symlink+0xa2: movq 0x18(%rbx),%r14
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*177924 64706 0 0x8000000 0x4000000 0 syz-executor.4
ufs_symlink(ffff8000329b3b10) at ufs_symlink+0xa2 sys/ufs/ufs/ufs_vnops.c:1304
VOP_SYMLINK(fffffd80776197d8,ffff8000329b3c90,ffff8000329b3cc0,ffff8000329b3bc0,ffff80002a676000) at VOP_SYMLINK+0xd7 sys/kern/vfs_vops.c:432
dosymlinkat(ffff80002a678cf0,20000040,9,20000340) at dosymlinkat+0x158 sys/kern/vfs_syscalls.c:1810
syscall(ffff8000329b3e40) at syscall+0x72a sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xbd5504fb090, count: 10
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: uvm_fault(0xfffffd8069084d80, 0x18, 0, 1) -> e
ddb> trace
ufs_symlink(ffff8000329b3b10) at ufs_symlink+0xa2 sys/ufs/ufs/ufs_vnops.c:1304
VOP_SYMLINK(fffffd80776197d8,ffff8000329b3c90,ffff8000329b3cc0,ffff8000329b3bc0,ffff80002a676000) at VOP_SYMLINK+0xd7 sys/kern/vfs_vops.c:432
dosymlinkat(ffff80002a678cf0,20000040,9,20000340) at dosymlinkat+0x158 sys/kern/vfs_syscalls.c:1810
syscall(ffff8000329b3e40) at syscall+0x72a sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xbd5504fb090, count: -5
ddb> show registers
rdi 0xffff80002a676000
rsi 0xd2a
rbp 0xffff8000329b3b00
rbx 0
rdx 0x7
rcx 0xffcf9a939699d0d1
rax 0x7
r8 0x101010101010101
r9 0x8080808080808080
r10 0xf180eaa840c72b8f
r11 0x565d5687a3f0aa30
r12 0x7
r13 0xfffffd8077619898
r14 0xffff8000329b3c90
r15 0xffff8000329b3b10
rip 0xffffffff81838802 ufs_symlink+0xa2
cs 0x8
rflags 0x10246 __ALIGN_SIZE+0xf246
rsp 0xffff8000329b3ab0
ss 0
ufs_symlink+0xa2: movq 0x18(%rbx),%r14
ddb> show proc
PROC (syz-executor.4) tid=177924 pid=64706 tcnt=3 stat=onproc
flags process=8000000 proc=4000000<THREAD>
runpri=17, usrpri=85, slppri=17, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff80002d5242c0,0xffff80002a679740
process=0xffff800035c8f2c8 user=0xffff8000329ae000, vmspace=0xfffffd8069084d80
estcpu=35, cpticks=3, pctcpu=0.0, user=0, sys=1, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
67148 160599 50272 0 2 0x8000000 syz-executor.3
67148 229379 50272 0 3 0xc000080 ttyout syz-executor.3
62371 94373 44939 0 2 0x8000000 syz-executor.6
62371 220562 44939 0 3 0xc000080 fsleep syz-executor.6
1039 36826 31046 0 2 0x8000000 syz-executor.0
1039 169439 31046 0 2 0xc000000 syz-executor.0
75811 516679 46640 0 3 0x8000080 nanoslp syz-executor.5
75811 484668 46640 0 3 0xc000080 kqpoll syz-executor.5
75811 379320 46640 0 3 0xc000080 fsleep syz-executor.5
64706 520815 27069 0 2 0x8000000 syz-executor.4
*64706 177924 27069 0 7 0xc000000 syz-executor.4
64706 18520 27069 0 3 0xc000080 fsleep syz-executor.4
27069 281291 52867 0 3 0x8000082 nanoslp syz-executor.4
46640 288579 52867 0 3 0x8000082 nanoslp syz-executor.5
99857 399748 52867 0 2 0x8000482 syz-executor.2
50272 399437 52867 0 3 0x8000082 nanoslp syz-executor.3
31046 109664 52867 0 3 0x8000082 nanoslp syz-executor.0
81787 326285 52867 0 2 0x8000482 syz-executor.7
44939 107949 52867 0 3 0x8000082 nanoslp syz-executor.6
68371 387417 0 0 3 0x14200 acct acct
47923 340179 24788 0 3 0x18100082 netio ndp
24788 75828 1 0 3 0x810008a sigsusp sh
27665 196372 0 0 3 0x14280 nfsidl nfsio
92475 43279 0 0 3 0x14280 nfsidl nfsio
73007 371201 0 0 3 0x14280 nfsidl nfsio
9766 308868 0 0 3 0x14280 nfsidl nfsio
93523 447553 0 0 3 0x14280 nfsidl nfsio
92498 140372 0 0 3 0x14280 nfsidl nfsio
51042 426192 0 0 3 0x14280 nfsidl nfsio
56011 367798 0 0 3 0x14280 nfsidl nfsio
91931 468018 0 0 3 0x14280 nfsidl nfsio
37907 447349 0 0 3 0x14280 nfsidl nfsio
63203 205328 0 0 3 0x14280 nfsidl nfsio
7121 62287 0 0 3 0x14280 nfsidl nfsio
26204 279063 0 0 3 0x14280 nfsidl nfsio
45100 235472 0 0 3 0x14280 nfsidl nfsio
33986 169607 0 0 3 0x14280 nfsidl nfsio
8798 305580 0 0 3 0x14280 nfsidl nfsio
45339 232146 0 0 3 0x14280 nfsidl nfsio
50450 260711 0 0 3 0x14280 nfsidl nfsio
66711 187880 0 0 3 0x14280 nfsidl nfsio
32912 364412 0 0 3 0x14280 nfsidl nfsio
4192 102918 1 0 3 0x18100083 ttyin getty
13830 105392 0 0 3 0x14200 bored sosplice
52867 371629 7000 0 3 0x1a000082 thrsleep syz-fuzzer
52867 401809 7000 0 3 0x1e000082 thrsleep syz-fuzzer
52867 421417 7000 0 3 0x1e000082 thrsleep syz-fuzzer
52867 477202 7000 0 3 0x1e000082 wait syz-fuzzer
52867 15697 7000 0 3 0x1e000082 wait syz-fuzzer
52867 37067 7000 0 3 0x1e000082 kqread syz-fuzzer
52867 31621 7000 0 3 0x1e000082 wait syz-fuzzer
52867 465040 7000 0 3 0x1e000082 wait syz-fuzzer
52867 183890 7000 0 3 0x1e000082 wait syz-fuzzer
52867 189130 7000 0 3 0x1e000082 wait syz-fuzzer
52867 105110 7000 0 3 0x1e000082 thrsleep syz-fuzzer
52867 83419 7000 0 3 0x1e000082 thrsleep syz-fuzzer
52867 38266 7000 0 3 0x1e000082 wait syz-fuzzer
52867 288358 7000 0 3 0x1e000082 wait syz-fuzzer
7000 137107 65870 0 3 0x810008a sigsusp ksh
65870 137858 25305 0 3 0x1800009a kqread sshd
25305 323096 1 0 3 0x18000088 kqread sshd
49534 341857 4968 73 2 0x19100010 syslogd
4968 315422 1 0 3 0x18100082 sbwait syslogd
23588 394402 1 0 3 0x18100080 kqread resolvd
60788 264494 3038 77 3 0x18100092 kqread dhcpleased
33429 65804 3038 77 3 0x18100092 kqread dhcpleased
3038 434465 1 0 3 0x18000080 kqread dhcpleased
9605 292443 0 0 3 0x14200 bored smr
41986 202323 0 0 2 0x14200 zerothread
19676 250367 0 0 3 0x14200 aiodoned aiodoned
50335 506059 0 0 3 0x14200 syncer update
65980 173001 0 0 3 0x14200 cleaner cleaner
81134 449790 0 0 3 0x14200 reaper reaper
14413 391106 0 0 3 0x14200 pgdaemon pagedaemon
62841 390302 0 0 3 0x14200 bored viomb
76753 286426 0 0 3 0x40014200 acpi0 acpi0
96024 366888 0 0 3 0x14200 bored softnet3
25226 290089 0 0 3 0x14200 bored softnet2
72323 419219 0 0 3 0x14200 bored softnet1
25567 315166 0 0 2 0x14200 softnet0
923 82240 0 0 3 0x14200 bored systqmp
67458 280894 0 0 3 0x14200 bored systq
11427 391 0 0 2 0x40014200 softclock
35881 138996 0 0 3 0x40014200 idle0
1 203547 0 0 3 0x8000082 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 10204 6683K 10571K 166960K 14265 0
pcb 17 16K 18K 166960K 231 0
rtable 218 8K 9K 166960K 1960 0
pf 33 9K 10K 166960K 160 0
ifaddr 44 12K 12K 166960K 258 0
ifgroup 58 2K 2K 166960K 291 0
sysctl 3 0K 0K 166960K 3 0
counters 32 17K 17K 166960K 91 0
ioctlops 0 0K 2K 166960K 171 0
iov 0 0K 18K 166960K 91 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1417 89K 89K 166960K 3282 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 9K 166960K 27 0
VM map 2 1K 1K 166960K 2 0
sem 12 1K 1K 166960K 53 0
dirhash 12 2K 2K 166960K 51 0
ACPI 1697 195K 286K 166960K 12548 0
file desc 17 61K 101K 166960K 2009 0
sigio 1 0K 0K 166960K 28 0
proc 58 59K 116K 166960K 1857 0
subproc 117 7K 8K 166960K 793 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 224 0
in_multi 98 7K 7K 166960K 642 0
ether_multi 1 0K 0K 166960K 16 0
mrt 1 0K 0K 166960K 3 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 85 387K 387K 166960K 85 0
exec 0 0K 1K 166960K 1211 0
pfkey data 0 0K 0K 166960K 3 0
tdb 3 0K 0K 166960K 3 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 285 97K 116K 166960K 17343 0
UVM aobj 56 7K 7K 166960K 61 0
pinsyscall 38 76K 102K 166960K 4393 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 1K 166960K 71 0
NDP 13 0K 2K 166960K 180 0
temp 77 6812K 6940K 166960K 94537 0
kqueue 13 20K 26K 166960K 183 0
SYN cache 2 16K 16K 166960K 2 0
ddb> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
rtpcb 120 272 0 267 1 0 1 1 0 8 0
rtentry 112 696 0 599 4 0 4 4 0 8 1
unpcb 144 981 0 966 2 1 1 2 0 8 0
syncache 336 9 0 9 2 1 1 1 0 8 1
sackhl 24 2 0 2 1 0 1 1 0 8 1
tcpqe 32 5 0 5 1 0 1 1 0 8 1
tcpcb 808 451 0 445 6 4 2 5 0 8 1
arp 88 134 0 117 1 0 1 1 0 8 0
ipq 40 6 0 6 1 0 1 1 0 8 1
ipqe 40 97 0 97 1 0 1 1 0 8 1
inpcb 352 1792 0 1777 15 12 3 13 0 8 1
nd6 104 174 0 149 1 0 1 1 0 8 0
pkpcb 40 13 0 13 2 1 1 1 0 8 1
kcovpl 48 61 0 52 1 0 1 1 0 8 0
ppxss 1072 6 0 6 2 1 1 1 0 8 1
art_heap8 4096 2 0 0 2 0 2 2 0 8 0
art_heap4 256 2706 0 2250 56 27 29 30 0 8 0
art_table 32 2708 0 2250 4 0 4 4 0 8 0
art_node 16 689 0 602 1 0 1 1 0 8 0
sysvmsgpl 40 9 0 4 1 0 1 1 0 8 0
semupl 112 4 0 4 1 1 0 1 0 8 0
semapl 112 40 0 30 1 0 1 1 0 8 0
shmpl 112 58 0 5 2 0 2 2 0 8 0
dirhash 1024 43 0 26 3 0 3 3 0 8 0
dino2pl 256 3932 0 2415 96 0 96 96 0 8 0
ffsino 240 3932 0 2415 90 0 90 90 0 8 0
nchpl 144 6356 0 4623 67 0 67 67 0 8 0
uvmvnodes 80 5574 0 0 114 0 114 114 0 8 0
vnodes 216 5574 0 0 310 0 310 310 0 8 0
vnodes: pool(0xffffffff82d3acb8:vnodes): page inconsistency: page 0x0; at page head addr 0xfffffd80684f5f90 (p 0xfffffd80684f5000)
namei 1024 26746 0 26745 4 2 2 3 0 8 1
vcpupl 3904 5 0 1 1 0 1 1 0 8 0
vmpool 664 16 0 12 1 0 1 1 0 8 0
kstatmem 264 144 0 118 2 0 2 2 0 8 0
scsiplug 72 5 0 5 2 1 1 1 0 8 1
scxspl 216 43641 0 43641 9 7 2 8 1 8 2
plimitpl 152 303 0 287 1 0 1 1 0 8 0
sigapl 424 2228 0 2160 9 0 9 9 0 8 0
futexpl 64 25650 0 25647 1 0 1 1 0 8 0
knotepl 120 9541 0 9459 22 10 12 15 0 8 8
kqueuepl 184 398 0 387 1 0 1 1 0 8 0
pipepl 288 517 0 487 5 0 5 5 0 8 2
fdescpl 432 2189 0 2161 5 0 5 5 0 8 0
filepl 120 13111 0 12836 15 5 10 14 0 8 1
lockfpl 104 504 0 501 1 0 1 1 0 8 0
lockfspl 48 226 0 223 1 0 1 1 0 8 0
sessionpl 144 70 0 53 1 0 1 1 0 8 0
pgrppl 48 84 0 67 1 0 1 1 0 8 0
ucredpl 104 1747 0 1737 1 0 1 1 0 8 0
zombiepl 144 2163 0 2160 1 0 1 1 0 8 0
processpl 1080 2228 0 2160 6 0 6 6 0 8 0
procpl 656 3740 0 3652 9 0 9 9 0 8 1
sosppl 168 5 0 5 2 1 1 1 0 8 1
sockpl 504 3075 0 3043 24 17 7 20 0 8 2
mcl64k 65536 12 0 12 2 1 1 1 0 8 1
mcl16k 16384 1 0 1 1 0 1 1 0 8 1
mcl12k 12288 4 0 4 2 1 1 1 0 8 1
mcl8k 8192 48 0 48 2 1 1 1 0 8 1
mcl4k 4096 10 0 10 1 0 1 1 0 8 1
mcl2k 2048 27705 0 27609 46 25 21 38 0 8 8
mtagpl 96 49 0 46 1 0 1 1 0 8 0
mbufpl 256 69167 0 68943 115 93 22 63 0 8 1
bufpl 280 11212 0 3088 581 0 581 581 0 8 0
anonpl 24 419046 0 412901 113 46 67 95 0 188 4
amapchunkpl 152 57827 0 57183 59 21 38 49 0 158 10
amappl16 200 9533 0 9385 39 18 21 21 0 8 9
amappl15 192 12 0 11 1 0 1 1 0 8 0
amappl14 184 302 0 289 2 1 1 2 0 8 0
amappl13 176 6 0 6 1 1 0 1 0 8 0
amappl12 168 3512 0 3483 2 0 2 2 0 8 0
amappl11 160 53 0 43 1 0 1 1 0 8 0
amappl10 152 100 0 90 1 0 1 1 0 8 0
amappl9 144 143 0 142 1 0 1 1 0 8 0
amappl8 136 169 0 139 2 0 2 2 0 8 0
amappl7 128 76 0 62 1 0 1 1 0 8 0
amappl6 120 927 0 912 2 1 1 2 0 8 0
amappl5 112 348 0 336 1 0 1 1 0 8 0
amappl4 104 847 0 815 3 1 2 2 0 8 1
amappl3 96 11031 0 10952 3 0 3 3 0 8 0
amappl2 88 2833 0 2757 3 1 2 3 0 8 0
amappl1 80 18226 0 17711 25 11 14 22 0 8 1
amappl 88 16367 0 16177 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 60 0 5 1 0 1 1 0 8 0
uaddrrnd 24 2205 0 2173 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 2205 0 2173 1 0 1 1 0 8 0
vmmpekpl 168 20521 0 20463 3 0 3 3 0 8 0
vmmpepl 168 166680 0 164797 134 27 107 112 0 357 12
vmsppl 344 2204 0 2173 4 0 4 4 0 8 0
rwobjpl 24 50302 0 43547 43 0 43 43 0 8 0
pdppl 4096 4416 0 4350 275 204 71 87 0 8 5
pvpl 32 1060062 0 1047470 416 240 176 359 0 265 37
pmappl 216 2204 0 2173 3 0 3 3 0 8 0
extentpl 40 56 0 38 1 0 1 1 0 8 0
phpool 112 733 0 377 12 0 12 12 0 8 0
ddb> machine ddbcpu 0
No such command
ddb> trace
ufs_symlink(ffff8000329b3b10) at ufs_symlink+0xa2 sys/ufs/ufs/ufs_vnops.c:1304
VOP_SYMLINK(fffffd80776197d8,ffff8000329b3c90,ffff8000329b3cc0,ffff8000329b3bc0,ffff80002a676000) at VOP_SYMLINK+0xd7 sys/kern/vfs_vops.c:432
dosymlinkat(ffff80002a678cf0,20000040,9,20000340) at dosymlinkat+0x158 sys/kern/vfs_syscalls.c:1810
syscall(ffff8000329b3e40) at syscall+0x72a sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xbd5504fb090, count: -5
ddb> machine ddbcpu 1
No such command
ddb> trace
ufs_symlink(ffff8000329b3b10) at ufs_symlink+0xa2 sys/ufs/ufs/ufs_vnops.c:1304
VOP_SYMLINK(fffffd80776197d8,ffff8000329b3c90,ffff8000329b3cc0,ffff8000329b3bc0,ffff80002a676000) at VOP_SYMLINK+0xd7 sys/kern/vfs_vops.c:432
dosymlinkat(ffff80002a678cf0,20000040,9,20000340) at dosymlinkat+0x158 sys/kern/vfs_syscalls.c:1810
syscall(ffff8000329b3e40) at syscall+0x72a sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xbd5504fb090, count: -5
---
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