kernel: privileged instruction fault trap, code=NUM

已查看 1 次
跳至第一个未读帖子

syzbot

未读,
2022年2月7日 02:58:232022/2/7
收件人 syzkaller-o...@googlegroups.com
Hello,

syzbot found the following issue on:

HEAD commit: f05e79799977 Avoid touching "locked" DARTs. While there, ..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=15558c1c700000
kernel config: https://syzkaller.appspot.com/x/.config?x=bf87b6915a88cd0d
dashboard link: https://syzkaller.appspot.com/bug?extid=0bd4244b02b1ee24b3cd

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+0bd424...@syzkaller.appspotmail.com

kernel: privileged instruction fault trap, code=0
Stopped at vmptrld+0xb: rdrand 0(%rdi)
ddb{0}>
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
the kernel did not panic
ddb{0}> trace
vmptrld() at vmptrld+0xb
vm_create(ffff800000d03800,ffff8000211627e8) at vm_create+0x2d3 sys/arch/amd64/amd64/vmm.c:1545
vmmioctl(a00,c5005601,ffff800000d03800,1,ffff8000211627e8) at vmmioctl+0x1f2
VOP_IOCTL(fffffd8077b92ad0,c5005601,ffff800000d03800,1,fffffd807f7d86c0,ffff8000211627e8) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264
vn_ioctl(fffffd807d2fc0b8,c5005601,ffff800000d03800,ffff8000211627e8) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:531
sys_ioctl(ffff8000211627e8,ffff80002e3660d8,ffff80002e366130) at sys_ioctl+0x4a2
syscall(ffff80002e3661a0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff80002e3661a0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x66c44703ef0, count: -8
ddb{0}> show registers
rdi 0xffff80002e360b50
rsi 0x1
rbp 0xffff80002e365d30
rbx 0xffff800000679c00
rdx 0
rcx 0x11e57ed0 __kernel_phys_end+0xf257ed0
rax 0xfffffd8066156000
r8 0
r9 0
r10 0x605a30b90ceabc54
r11 0x22e1d6db1273d0e5
r12 0x1
r13 0
r14 0xffff80002e360800
r15 0xffff80002e360b50
rip 0xffffffff818e18a4 vmptrld+0xb
cs 0x8
rflags 0x10202 __ALIGN_SIZE+0xf202
rsp 0xffff80002e365cf8
ss 0
vmptrld+0xb: rdrand 0(%rdi)
ddb{0}> show proc
PROC (syz-executor.1) pid=177798 stat=onproc
flags process=0 proc=4000000<THREAD>
pri=32, usrpri=82, nice=20
forw=0xffffffffffffffff, list=0xffff800021162a88,0xffff800021162018
process=0xffff80002789edd0 user=0xffff80002e361000, vmspace=0xfffffd807e7c9740
estcpu=36, cpticks=1, pctcpu=0.0
user=0, sys=1, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
23541 25865 71748 0 7 0 syz-executor.7
23541 377769 71748 0 2 0x4000000 syz-executor.7
2168 98637 59752 0 2 0 syz-executor.3
2168 123372 59752 0 3 0x4000080 fsleep syz-executor.3
73317 293600 70228 0 2 0 syz-executor.5
73317 28832 70228 0 3 0x4000080 fsleep syz-executor.5
73317 68309 70228 0 3 0x4000080 fsleep syz-executor.5
80450 427923 30408 0 2 0 syz-executor.4
80450 132769 30408 0 3 0x4000080 fsleep syz-executor.4
92026 149835 86211 0 2 0 syz-executor.1
92026 387094 86211 0 3 0x4000080 fsleep syz-executor.1
*92026 177798 86211 0 7 0x4000000 syz-executor.1
60522 294864 47321 0 2 0 syz-executor.2
60522 117342 47321 0 2 0x4000080 syz-executor.2
14810 459653 37443 0 2 0 syz-executor.0
14810 364473 37443 0 3 0x4000080 fsleep syz-executor.0
1168 15365 90956 0 2 0 syz-executor.6
59752 140848 8966 0 3 0x82 nanoslp syz-executor.3
40376 430032 0 0 3 0x14200 bored sosplice
26675 301274 1 0 3 0x100083 ttyopn getty
71748 8855 8966 0 3 0x82 nanoslp syz-executor.7
90956 515623 8966 0 2 0x482 syz-executor.6
70228 460491 8966 0 3 0x82 nanoslp syz-executor.5
30408 147463 8966 0 3 0x82 nanoslp syz-executor.4
47321 343537 8966 0 3 0x82 nanoslp syz-executor.2
86211 87923 8966 0 3 0x82 nanoslp syz-executor.1
37443 109880 8966 0 3 0x82 nanoslp syz-executor.0
8966 401896 97546 0 3 0x82 thrsleep syz-fuzzer
8966 79130 97546 0 3 0x4000082 thrsleep syz-fuzzer
8966 419197 97546 0 3 0x4000082 thrsleep syz-fuzzer
8966 47356 97546 0 3 0x4000082 thrsleep syz-fuzzer
8966 222304 97546 0 3 0x4000082 thrsleep syz-fuzzer
8966 436739 97546 0 3 0x4000082 kqread syz-fuzzer
8966 315592 97546 0 3 0x4000082 thrsleep syz-fuzzer
8966 149874 97546 0 3 0x4000082 thrsleep syz-fuzzer
97546 446446 97816 0 3 0x10008a sigsusp ksh
97816 19192 17485 0 3 0x9a poll sshd
17485 384811 1 0 3 0x88 poll sshd
78582 11910 78896 74 3 0x100092 bpf pflogd
78896 416522 1 0 3 0x80 netio pflogd
81647 494224 7569 73 3 0x100090 kqread syslogd
7569 118791 1 0 3 0x100082 netio syslogd
31844 286038 1 0 3 0x100080 kqread resolvd
624 488302 57433 77 3 0x100092 kqread dhcpleased
70497 372153 57433 77 3 0x100092 kqread dhcpleased
57433 146748 1 0 3 0x80 kqread dhcpleased
65033 193977 0 0 2 0x14200 smr
54510 305429 0 0 2 0x14200 zerothread
60428 368153 0 0 3 0x14200 aiodoned aiodoned
72720 269049 0 0 3 0x14200 syncer update
39472 482213 0 0 3 0x14200 cleaner cleaner
12993 125701 0 0 3 0x14200 reaper reaper
33794 286904 0 0 3 0x14200 pgdaemon pagedaemon
45663 362474 0 0 3 0x14200 bored viomb
8068 23342 0 0 3 0x40014200 acpi0 acpi0
60836 350923 0 0 3 0x40014200 idle1
79631 98019 0 0 3 0x14200 bored softnet
37434 462392 0 0 3 0x14200 bored systqmp
58563 420827 0 0 3 0x14200 bored systq
82239 83632 0 0 2 0x40014200 softclock
57591 17524 0 0 3 0x40014200 idle0
1 168638 0 0 3 0x80082 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
Process 92026 (syz-executor.1) thread 0xffff8000211627e8 (177798)
exclusive rwlock vm_list r = 0 (0xffff800000679c88)
#0 witness_lock+0x44d
#1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2 vm_create+0xa4 sys/arch/amd64/amd64/vmm.c:1508
#3 vmmioctl+0x1f2
#4 VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264
#5 vn_ioctl+0xbc sys/kern/vfs_vnops.c:531
#6 sys_ioctl+0x4a2
#7 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#7 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#8 Xsyscall+0x128
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10213 6550K 6872K 78643K 12338 0
pcb 13 14K 16K 78643K 224 0
rtable 241 7K 10K 78643K 655 0
ifaddr 89 18K 19K 78643K 211 0
sysctl 2 0K 0K 78643K 2 0
counters 56 35K 35K 78643K 76 0
ioctlops 1 2K 4K 78643K 1584 0
iov 0 0K 28K 78643K 106 0
mount 1 1K 1K 78643K 1 0
log 0 0K 0K 78643K 5 0
vnodes 1435 90K 90K 78643K 1699 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 5K 78643K 11 0
VM map 2 1K 1K 78643K 2 0
sem 12 1K 1K 78643K 16 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1697 195K 286K 78643K 12548 0
file desc 18 65K 93K 78643K 1111 0
sigio 1 0K 0K 78643K 1 0
proc 69 87K 124K 78643K 651 0
subproc 104 6K 6K 78643K 117 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 34 0
in_multi 99 6K 6K 78643K 144 0
ether_multi 1 0K 0K 78643K 13 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 205 917K 917K 78643K 205 0
exec 0 0K 2K 78643K 725 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 361 104K 104K 78643K 15939 0
UVM aobj 84 6K 6K 78643K 87 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 112 0
NDP 12 0K 2K 78643K 40 0
temp 118 4702K 4766K 78643K 8211 0
kqueue 10 14K 18K 78643K 88 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 81 0 78 2 1 1 2 0 8 0
rtentry 112 126 0 15 4 0 4 4 0 8 0
unpcb 136 473 0 458 7 6 1 4 0 8 0
syncache 296 4 0 4 1 1 0 1 0 8 0
tcpcb 736 1575 0 1505 22 14 8 17 0 8 1
arp 120 20 0 2 1 0 1 1 0 8 0
inpcb 304 2269 0 2262 21 15 6 14 0 8 5
nd6 48 27 0 3 1 0 1 1 0 8 0
pkpcb 40 3 0 3 1 1 0 1 0 8 0
kcovpl 48 9 0 1 1 0 1 1 0 8 0
ppxss 1248 6 0 6 1 1 0 1 0 8 0
pfstscr 40 1 0 1 1 0 1 1 0 8 1
pffrag 232 2 0 0 1 0 1 1 0 482 0
pffrnode 88 2 0 0 1 0 1 1 0 8 0
pffrent 40 8 0 6 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
pfrke_plain 168 10 0 10 1 1 0 1 0 8 0
pfrktable 1344 74 0 74 4 4 0 1 0 8 0
pftag 88 10 0 10 2 2 0 1 0 8 0
pfstitem 24 53 0 32 1 0 1 1 0 8 0
pfstkey 112 55 0 34 1 0 1 1 0 8 0
pfstate 320 54 0 33 3 0 3 3 0 8 0
pfrule 1360 45 0 34 5 4 1 2 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 523 0 68 31 2 29 29 0 8 0
art_table 32 524 0 68 4 0 4 4 0 8 0
art_node 16 125 0 25 1 0 1 1 0 8 0
sysvmsgpl 40 30 0 7 2 1 1 1 0 8 0
semupl 112 3 0 3 1 1 0 1 0 8 0
semapl 112 10 0 0 1 0 1 1 0 8 0
shmpl 112 84 0 3 3 0 3 3 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 2703 0 1261 91 0 91 91 0 8 0
ffsino 272 2703 0 1261 97 0 97 97 0 8 0
nchpl 144 4311 0 2680 63 0 63 63 0 8 0
rtmask 32 20 0 20 1 1 0 1 0 8 0
uvmvnodes 80 3145 0 0 65 0 65 65 0 8 0
vnodes 224 3145 0 0 185 0 185 185 0 8 0
namei 1024 14563 0 14563 2 1 1 2 0 8 1
percpumem 16 50 0 10 1 0 1 1 0 8 0
vcpupl 2048 2 0 1 1 0 1 1 0 8 0
vmpool 560 5 0 4 2 1 1 1 0 8 0
pfiaddrpl 120 20 0 20 4 4 0 1 0 8 0
scxspl 216 12612 0 12612 10 9 1 8 0 8 1
plimitpl 152 161 0 146 1 0 1 1 0 8 0
sigapl 424 1412 0 1366 6 0 6 6 0 8 0
futexpl 64 8766 0 8760 1 0 1 1 0 8 0
knotepl 112 122 0 0 3 0 3 3 0 8 0
kqueuepl 216 306 0 300 10 6 4 5 0 8 3
pipepl 336 627 0 599 18 12 6 8 0 8 3
fdescpl 496 1397 0 1366 5 1 4 5 0 8 0
filepl 152 9303 0 9060 25 10 15 19 0 8 5
lockfpl 104 130 0 128 1 0 1 1 0 8 0
lockfspl 48 58 0 56 1 0 1 1 0 8 0
sessionpl 144 26 0 9 1 0 1 1 0 8 0
pgrppl 48 30 0 13 1 0 1 1 0 8 0
ucredpl 96 486 0 473 1 0 1 1 0 8 0
zombiepl 144 1366 0 1366 1 0 1 1 0 8 1
processpl 1064 1412 0 1366 4 0 4 4 0 8 0
procpl 672 3402 0 3340 8 1 7 7 0 8 1
srpgc 96 2 0 2 1 1 0 1 0 8 0
sosppl 168 11 0 11 3 2 1 1 0 8 1
sockpl 480 2831 0 2806 36 24 12 24 0 8 8
mcl64k 65536 13 0 0 2 0 2 2 0 8 0
mcl16k 16384 4 0 0 1 0 1 1 0 8 0
mcl12k 12288 12 0 0 2 0 2 2 0 8 0
mcl9k 9216 3 0 0 1 0 1 1 0 8 0
mcl8k 8192 22 0 0 3 1 2 3 0 8 0
mcl4k 4096 11 0 0 2 0 2 2 0 8 0
mcl2k2 2112 4 0 0 1 0 1 1 0 8 0
mcl2k 2048 178 0 0 22 0 22 22 0 8 0
mtagpl 96 86 0 0 3 0 3 3 0 8 0
mbufpl 256 459 0 0 28 0 28 28 0 8 0
bufpl 288 4933 0 148 342 0 342 342 0 8 0
anonpl 24 354378 0 334798 142 15 127 137 0 186 0
amapchunkpl 152 38861 0 37932 43 6 37 40 0 158 1
amappl16 200 3386 0 2788 47 14 33 45 0 8 1
amappl15 192 299 0 291 1 0 1 1 0 8 0
amappl14 184 4 0 2 1 0 1 1 0 8 0
amappl13 176 88 0 86 1 0 1 1 0 8 0
amappl12 168 212 0 207 1 0 1 1 0 8 0
amappl11 160 53 0 39 1 0 1 1 0 8 0
amappl10 152 165 0 159 1 0 1 1 0 8 0
amappl9 144 718 0 710 1 0 1 1 0 8 0
amappl8 136 874 0 810 3 0 3 3 0 8 0
amappl7 128 372 0 358 1 0 1 1 0 8 0
amappl6 120 450 0 428 2 1 1 2 0 8 0
amappl5 112 1269 0 1245 1 0 1 1 0 8 0
amappl4 104 870 0 844 1 0 1 1 0 8 0
amappl3 96 428 0 415 1 0 1 1 0 8 0
amappl2 88 685 0 641 3 1 2 3 0 8 0
amappl1 80 28440 0 27826 19 5 14 19 0 8 0
amappl 88 15435 0 15159 7 0 7 7 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 86 0 3 2 0 2 2 0 8 0
uaddrrnd 24 1402 0 1370 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 1402 0 1370 1 0 1 1 0 8 0
vmmpekpl 168 16502 0 16443 3 0 3 3 0 8 0
vmmpepl 168 131043 0 128341 140 20 120 128 0 357 2
vmsppl 368 1401 0 1370 4 0 4 4 0 8 0
rwobjpl 56 36263 0 31419 70 1 69 69 0 8 0
pdppl 4096 2811 0 2741 145 74 71 83 0 8 1
pvpl 32 712504 0 688353 258 54 204 245 0 265 2
pmappl 248 1401 0 1370 3 0 3 3 0 8 0
extentpl 40 58 0 38 1 0 1 1 0 8 0
phpool 112 823 0 110 21 0 21 21 0 8 0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
vmptrld() at vmptrld+0xb
vm_create(ffff800000d03800,ffff8000211627e8) at vm_create+0x2d3 sys/arch/amd64/amd64/vmm.c:1545
vmmioctl(a00,c5005601,ffff800000d03800,1,ffff8000211627e8) at vmmioctl+0x1f2
VOP_IOCTL(fffffd8077b92ad0,c5005601,ffff800000d03800,1,fffffd807f7d86c0,ffff8000211627e8) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264
vn_ioctl(fffffd807d2fc0b8,c5005601,ffff800000d03800,ffff8000211627e8) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:531
sys_ioctl(ffff8000211627e8,ffff80002e3660d8,ffff80002e366130) at sys_ioctl+0x4a2
syscall(ffff80002e3661a0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff80002e3661a0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x66c44703ef0, count: -8
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
end of kernel
end trace frame: 0x7f7ffffe9990, count: -3


---
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

未读,
2022年5月8日 03:58:162022/5/8
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.
回复全部
回复作者
转发
0 个新帖子