assert "ps->ps_uvncount == NUM" failed in kern_unveil.c (3)
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syzbot
May 27, 2023, 1:25:44 PM5/27/23
to syzkaller-o...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 7c22bbb7276f prepare for 5.36, document methods in base cl..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=117b5069280000
kernel config: https://syzkaller.appspot.com/x/.config?x=1bc15e68cd2a49e5
dashboard link: https://syzkaller.appspot.com/bug?extid=c89b00c17335900f80cd
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/d3640f3850a7/disk-7c22bbb7.raw.xz
bsd.gdb: https://storage.googleapis.com/syzbot-assets/aa00f3a375c6/bsd-7c22bbb7.gdb.xz
kernel image: https://storage.googleapis.com/syzbot-assets/287c18168e01/kernel-7c22bbb7.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+c89b00...@syzkaller.appspotmail.com
panic: kernel diagnostic assertion "ps->ps_uvncount == 0" failed: file "/syzkaller/managers/main/kernel/sys/kern/kern_unveil.c", line 188
Stopped at db_enter+0x1c: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff82768aae) at panic+0x165 sys/kern/subr_prf.c:198
__assert(ffffffff827e8b8a,ffffffff82766232,bc,ffffffff8278648f) at __assert+0x29 sys/kern/subr_prf.c:157
unveil_destroy(ffff800021676be0) at unveil_destroy+0x1a4 sys/kern/kern_unveil.c:188
exit1(ffff8000ffff18b0,0,0,1) at exit1+0x3b5 sys/kern/kern_exit.c:220
sys_exit(ffff8000ffff18b0,ffff80002e719a60,ffff80002e719ab0) at sys_exit+0x1a sys/kern/kern_exit.c:89
syscall(ffff80002e719b30) at syscall+0x4a8 sys/arch/amd64/amd64/trap.c:632
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x766acbbd2ca0, count: 7
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: kernel diagnostic assertion "ps->ps_uvncount == 0" failed: file "/syzkaller/managers/main/kernel/sys/kern/kern_unveil.c", line 188
ddb> trace
db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff82768aae) at panic+0x165 sys/kern/subr_prf.c:198
__assert(ffffffff827e8b8a,ffffffff82766232,bc,ffffffff8278648f) at __assert+0x29 sys/kern/subr_prf.c:157
unveil_destroy(ffff800021676be0) at unveil_destroy+0x1a4 sys/kern/kern_unveil.c:188
exit1(ffff8000ffff18b0,0,0,1) at exit1+0x3b5 sys/kern/kern_exit.c:220
sys_exit(ffff8000ffff18b0,ffff80002e719a60,ffff80002e719ab0) at sys_exit+0x1a sys/kern/kern_exit.c:89
syscall(ffff80002e719b30) at syscall+0x4a8 sys/arch/amd64/amd64/trap.c:632
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x766acbbd2ca0, count: -8
ddb> show registers
rdi 0
rsi 0x1
rbp 0xffff80002e719880
rbx 0x2
rdx 0
rcx 0
rax 0xffff8000ffff18b0
r8 0x101010101010101
r9 0x8080808080808080
r10 0x857e033eb12e153f
r11 0x9d222c269b5a5023
r12 0
r13 0xffff800021676be0
r14 0
r15 0x1
rip 0xffffffff81e754cc db_enter+0x1c
cs 0x8
rflags 0x246
rsp 0xffff80002e719870
ss 0x10
db_enter+0x1c: addq $0x8,%rsp
ddb> show proc
PROC (syz-executor.6) pid=144399 stat=onproc
flags process=1008<EXITING,SINGLEEXIT> proc=2000<WEXIT>
pri=32, usrpri=86, nice=20
forw=0xffffffffffffffff, list=0xffff8000ffff1b68,0xffff8000216d58b0
process=0xffff800021676be0 user=0xffff80002e714000, vmspace=0xfffffd8069d4d740
estcpu=36, cpticks=26, pctcpu=0.21
user=0, sys=2, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
51582 18956 53909 0 2 0 syz-executor.7
51582 198136 53909 0 2 0x4000000 syz-executor.7
51582 118322 53909 0 3 0x4000080 fsleep syz-executor.7
76390 372443 2843 0 2 0 syz-executor.3
76390 12073 2843 0 3 0x4000080 fsleep syz-executor.3
76390 381662 2843 0 3 0x4000080 fsleep syz-executor.3
76390 248479 2843 0 3 0x4000080 fsleep syz-executor.3
2792 192095 78746 0 2 0 syz-executor.0
2792 506004 78746 0 3 0x4000080 fsleep syz-executor.0
2792 440470 78746 0 3 0x4000080 fsleep syz-executor.0
53909 339698 10364 0 3 0x82 nanoslp syz-executor.7
2843 516464 10364 0 3 0x82 nanoslp syz-executor.3
56770 407347 10364 0 2 0x2 syz-executor.5
78746 305857 10364 0 3 0x82 nanoslp syz-executor.0
57103 1582 10364 0 2 0x2 syz-executor.2
37181 410007 10364 0 3 0x82 nanoslp syz-executor.6
466 345410 10364 0 2 0x2 syz-executor.4
46679 375316 0 0 3 0x14280 nfsidl nfsio
6319 373562 0 0 3 0x14280 nfsidl nfsio
14025 166979 0 0 3 0x14280 nfsidl nfsio
87885 192356 0 0 3 0x14280 nfsidl nfsio
80244 233693 0 0 3 0x14280 nfsidl nfsio
98188 257628 0 0 3 0x14280 nfsidl nfsio
99288 89868 0 0 3 0x14280 nfsidl nfsio
90889 461263 0 0 3 0x14280 nfsidl nfsio
64743 199284 0 0 3 0x14280 nfsidl nfsio
21962 239096 0 0 3 0x14280 nfsidl nfsio
7570 466911 0 0 3 0x14280 nfsidl nfsio
32019 466164 0 0 3 0x14280 nfsidl nfsio
27154 181820 0 0 3 0x14280 nfsidl nfsio
40931 217967 0 0 3 0x14280 nfsidl nfsio
63141 396642 0 0 3 0x14280 nfsidl nfsio
7500 208256 0 0 3 0x14280 nfsidl nfsio
63176 191702 0 0 3 0x14280 nfsidl nfsio
24814 415109 0 0 3 0x14280 nfsidl nfsio
20031 194516 0 0 3 0x14280 nfsidl nfsio
61834 407334 0 0 3 0x14280 nfsidl nfsio
22594 459439 0 0 3 0x14200 bored sosplice
60819 259865 10364 0 2 0x2 syz-executor.1
10364 192518 50904 0 3 0x82 thrsleep syz-fuzzer
10364 230675 50904 0 3 0x4000082 nanoslp syz-fuzzer
10364 237710 50904 0 3 0x4000082 wait syz-fuzzer
10364 278872 50904 0 3 0x4000082 wait syz-fuzzer
10364 144324 50904 0 3 0x4000082 wait syz-fuzzer
10364 136673 50904 0 3 0x4000082 thrsleep syz-fuzzer
10364 422599 50904 0 3 0x4000082 wait syz-fuzzer
10364 510981 50904 0 3 0x4000082 wait syz-fuzzer
10364 437404 50904 0 3 0x4000082 wait syz-fuzzer
10364 321972 50904 0 3 0x4000082 thrsleep syz-fuzzer
10364 426724 50904 0 3 0x4000082 wait syz-fuzzer
10364 85303 50904 0 3 0x4000082 kqread syz-fuzzer
10364 192889 50904 0 3 0x4000082 thrsleep syz-fuzzer
10364 490092 50904 0 3 0x4000082 wait syz-fuzzer
50904 136594 26876 0 3 0x10008a sigsusp ksh
26876 241587 90733 0 3 0x9a kqread sshd
11881 145943 1 0 3 0x100083 ttyin getty
90733 41351 1 0 3 0x88 kqread sshd
92377 395931 88884 73 3 0x1100090 kqread syslogd
88884 249159 1 0 3 0x100082 netio syslogd
95356 491456 1 0 3 0x100080 kqread resolvd
87203 308719 32920 77 3 0x100092 kqread dhcpleased
89546 112409 32920 77 3 0x100092 kqread dhcpleased
32920 495213 1 0 3 0x80 kqread dhcpleased
36198 492822 0 0 3 0x14200 bored smr
28497 42259 0 0 2 0x14200 zerothread
20149 337465 0 0 3 0x14200 aiodoned aiodoned
80045 258891 0 0 3 0x14200 syncer update
5022 72314 0 0 3 0x14200 cleaner cleaner
97675 360210 0 0 3 0x14200 reaper reaper
90706 441397 0 0 3 0x14200 pgdaemon pagedaemon
77181 449404 0 0 3 0x14200 bored viomb
34345 420509 0 0 3 0x40014200 acpi0 acpi0
36938 57377 0 0 3 0x14200 bored softnet3
89972 385291 0 0 3 0x14200 bored softnet2
75023 32805 0 0 3 0x14200 bored softnet1
72569 146262 0 0 3 0x14200 bored softnet0
83601 32501 0 0 3 0x14200 bored systqmp
44629 286167 0 0 3 0x14200 bored systq
66991 124242 0 0 2 0x40014200 softclock
56954 240868 0 0 3 0x40014200 idle0
1 413697 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 10184 6428K 6803K 78643K 23714 0
pcb 16 14K 19K 78643K 2435 0
rtable 178 15K 16K 78643K 3198 0
ifaddr 66 19K 23K 78643K 575 0
sysctl 3 1K 1K 78643K 6 0
counters 26 17K 17K 78643K 169 0
ioctlops 0 0K 4K 78643K 865 0
iov 0 0K 24K 78643K 1228 0
mount 1 1K 1K 78643K 1 0
log 0 0K 0K 78643K 4 0
vnodes 1559 97K 98K 78643K 15640 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 9K 78643K 93 0
VM map 2 1K 1K 78643K 2 0
sem 12 0K 1K 78643K 1089 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1697 195K 286K 78643K 12548 0
file desc 14 49K 69K 78643K 10779 0
sigio 0 0K 0K 78643K 1751 0
proc 62 75K 83K 78643K 1510 0
subproc 104 6K 8K 78643K 480 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 2 0K 0K 78643K 1152 0
in_multi 68 4K 7K 78643K 569 0
ether_multi 1 0K 0K 78643K 38 0
mrt 1 0K 0K 78643K 367 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 151 678K 678K 78643K 151 0
exec 0 0K 1K 78643K 2163 0
pfkey data 0 0K 0K 78643K 13 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 8 62K 64K 78643K 10 0
UVM amap 379 95K 105K 78643K 102717 0
UVM aobj 131 4K 4K 78643K 143 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 340 0
NDP 11 0K 1K 78643K 203 0
temp 124 5858K 14054K 78643K 103536 0
kqueue 12 18K 26K 78643K 577 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 1993 0 1989 17 16 1 3 0 8 0
rtentry 112 707 0 633 4 0 4 4 0 8 0
unpcb 144 5873 0 5860 72 71 1 10 0 8 0
syncache 296 48 0 48 12 12 0 1 0 8 0
tcpqe 32 241 0 241 6 6 0 1 0 8 0
tcpcb 776 3995 0 3988 115 114 1 8 0 8 0
arp 88 130 0 116 1 0 1 1 0 8 0
ipq 40 9 0 9 5 5 0 1 0 8 0
ipqe 40 153 0 153 5 5 0 1 0 8 0
inpcb 336 9778 0 9764 142 140 2 15 0 8 0
ip6q 72 3 0 3 1 1 0 1 0 8 0
ip6af 40 6 0 6 1 1 0 1 0 8 0
nd6 104 114 0 97 1 0 1 1 0 8 0
pkpcb 40 89 0 89 6 6 0 1 0 8 0
kcovpl 48 34 0 26 1 0 1 1 0 8 0
mppekey 1024 2 0 2 1 1 0 1 0 8 0
ppxss 1160 82 0 82 16 16 0 1 0 8 0
pppxif 1360 18 0 18 5 5 0 1 0 8 0
pfstscr 40 82 0 80 1 0 1 1 0 8 0
pfanchor 1288 889 331 377 43 0 43 43 0 8 0
pfstitem 24 11 0 8 1 0 1 1 0 8 0
pfstkey 128 150 0 140 1 0 1 1 0 8 0
pfstate 352 78 0 76 1 0 1 1 0 8 0
rttmr 136 28 0 28 3 3 0 1 0 8 0
art_heap8 4096 11 0 10 9 8 1 3 0 8 0
art_heap4 256 2546 0 2221 47 23 24 31 0 8 0
art_table 32 2557 0 2231 4 0 4 4 0 8 0
art_node 16 706 0 640 1 0 1 1 0 8 0
sysvmsgpl 40 70 0 41 1 0 1 1 0 8 0
semupl 112 6 0 6 1 1 0 1 0 8 0
semapl 112 1084 0 1074 1 0 1 1 0 8 0
shmpl 112 140 0 12 4 0 4 4 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 15645 0 14198 91 0 91 91 0 8 0
ffsino 240 15645 0 14198 86 0 86 86 0 8 0
nchpl 144 30138 0 29668 63 42 21 63 0 8 0
uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0
vnodes 216 5926 0 0 330 0 330 330 0 8 0
namei 1024 112774 0 112773 12 11 1 4 0 8 0
kstatmem 264 252 0 230 2 0 2 2 0 8 0
scsiplug 72 6 0 6 2 2 0 1 0 8 0
scxspl 216 86804 0 86804 30 29 1 8 0 8 1
plimitpl 152 585 0 570 1 0 1 1 0 8 0
sigapl 424 11046 0 10983 9 1 8 8 0 8 0
futexpl 64 119701 0 119695 5 4 1 1 0 8 0
knotepl 120 125545 0 125465 105 101 4 16 0 8 0
kqueuepl 184 1674 0 1666 26 25 1 7 0 8 0
pipepl 288 1862 0 1834 51 48 3 7 0 8 0
fdescpl 432 11008 0 10983 4 0 4 4 0 8 0
filepl 120 77794 0 77548 168 156 12 17 0 8 4
lockfpl 104 3894 0 3892 7 6 1 2 0 8 0
lockfspl 48 922 0 920 1 0 1 1 0 8 0
sessionpl 144 49 0 33 1 0 1 1 0 8 0
pgrppl 48 68 0 52 1 0 1 1 0 8 0
ucredpl 104 6224 0 6214 1 0 1 1 0 8 0
zombiepl 144 13561 0 13560 1 0 1 1 0 8 0
processpl 1008 11046 0 10983 10 1 9 9 0 8 0
procpl 696 27788 0 27705 21 12 9 10 0 8 0
sosppl 168 63 0 63 14 13 1 1 0 8 1
sockpl 456 17749 0 17718 446 441 5 34 0 8 0
mcl64k 65536 338 0 338 40 39 1 1 0 8 1
mcl16k 16384 132 0 132 40 39 1 1 0 8 1
mcl12k 12288 358 0 358 41 40 1 1 0 8 1
mcl9k 9216 187 0 187 38 38 0 1 0 8 0
mcl8k 8192 440 0 440 44 44 0 1 0 8 0
mcl4k 4096 1678 0 1678 13 12 1 1 0 8 1
mcl2k2 2112 65 0 65 29 29 0 1 0 8 0
mcl2k 2048 96670 0 96627 76 69 7 27 0 8 0
mtagpl 96 325 0 314 6 5 1 5 0 8 0
mbufpl 256 245860 0 245744 395 381 14 73 0 8 0
bufpl 288 19767 0 13373 457 0 457 457 0 8 0
anonpl 24 1271033 0 1254778 219 115 104 159 0 188 0
amapchunkpl 152 349429 0 348581 156 117 39 61 0 158 0
amappl16 200 31622 0 31094 67 38 29 39 0 8 0
amappl15 192 39 0 39 1 1 0 1 0 8 0
amappl14 184 234 0 222 2 1 1 2 0 8 0
amappl13 176 9 0 9 1 1 0 1 0 8 0
amappl12 168 12010 0 11983 2 0 2 2 0 8 0
amappl11 160 50 0 39 1 0 1 1 0 8 0
amappl10 152 74 0 65 1 0 1 1 0 8 0
amappl9 144 221 0 220 2 1 1 2 0 8 0
amappl8 136 460 0 353 4 0 4 4 0 8 0
amappl7 128 98 0 79 1 0 1 1 0 8 0
amappl6 120 489 0 463 2 1 1 2 0 8 0
amappl5 112 426 0 420 1 0 1 1 0 8 0
amappl4 104 1024 0 992 2 1 1 2 0 8 0
amappl3 96 64341 0 64267 3 0 3 3 0 8 0
amappl2 88 11497 0 11436 4 2 2 3 0 8 0
amappl1 80 48962 0 48461 22 11 11 22 0 8 0
amappl 88 101816 0 101594 7 1 6 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 72 142 0 12 3 0 3 3 0 8 0
uaddrrnd 24 11008 0 10982 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 11008 0 10982 1 0 1 1 0 8 0
vmmpekpl 168 79058 0 78998 4 0 4 4 0 8 0
vmmpepl 168 666311 0 664026 332 216 116 140 0 357 0
vmsppl 368 11007 0 10982 3 0 3 3 0 8 0
rwobjpl 24 169827 0 162200 48 1 47 47 0 8 0
pdppl 4096 22022 0 21964 709 645 64 66 0 8 6
pvpl 32 3371961 0 3350206 596 411 185 360 0 265 0
pmappl 216 11007 0 10982 2 0 2 2 0 8 0
extentpl 40 56 0 38 1 0 1 1 0 8 0
phpool 112 2227 0 1467 24 0 24 24 0 8 0
ddb> machine ddbcpu 0
No such command
ddb> trace
db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff82768aae) at panic+0x165 sys/kern/subr_prf.c:198
__assert(ffffffff827e8b8a,ffffffff82766232,bc,ffffffff8278648f) at __assert+0x29 sys/kern/subr_prf.c:157
unveil_destroy(ffff800021676be0) at unveil_destroy+0x1a4 sys/kern/kern_unveil.c:188
exit1(ffff8000ffff18b0,0,0,1) at exit1+0x3b5 sys/kern/kern_exit.c:220
sys_exit(ffff8000ffff18b0,ffff80002e719a60,ffff80002e719ab0) at sys_exit+0x1a sys/kern/kern_exit.c:89
syscall(ffff80002e719b30) at syscall+0x4a8 sys/arch/amd64/amd64/trap.c:632
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x766acbbd2ca0, count: -8
ddb> machine ddbcpu 1
No such command
ddb> trace
db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff82768aae) at panic+0x165 sys/kern/subr_prf.c:198
__assert(ffffffff827e8b8a,ffffffff82766232,bc,ffffffff8278648f) at __assert+0x29 sys/kern/subr_prf.c:157
unveil_destroy(ffff800021676be0) at unveil_destroy+0x1a4 sys/kern/kern_unveil.c:188
exit1(ffff8000ffff18b0,0,0,1) at exit1+0x3b5 sys/kern/kern_exit.c:220
sys_exit(ffff8000ffff18b0,ffff80002e719a60,ffff80002e719ab0) at sys_exit+0x1a sys/kern/kern_exit.c:89
syscall(ffff80002e719b30) at syscall+0x4a8 sys/arch/amd64/amd64/trap.c:632
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x766acbbd2ca0, count: -8
---
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 bug is already fixed, let syzbot know by replying with:
#syz fix: exact-commit-title
If you want to change bug's subsystems, reply with:
#syz set subsystems: new-subsystem
(See the list of subsystem names on the web dashboard)
If the bug is a duplicate of another bug, 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: 7c22bbb7276f prepare for 5.36, document methods in base cl..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=117b5069280000
kernel config: https://syzkaller.appspot.com/x/.config?x=1bc15e68cd2a49e5
dashboard link: https://syzkaller.appspot.com/bug?extid=c89b00c17335900f80cd
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/d3640f3850a7/disk-7c22bbb7.raw.xz
bsd.gdb: https://storage.googleapis.com/syzbot-assets/aa00f3a375c6/bsd-7c22bbb7.gdb.xz
kernel image: https://storage.googleapis.com/syzbot-assets/287c18168e01/kernel-7c22bbb7.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+c89b00...@syzkaller.appspotmail.com
panic: kernel diagnostic assertion "ps->ps_uvncount == 0" failed: file "/syzkaller/managers/main/kernel/sys/kern/kern_unveil.c", line 188
Stopped at db_enter+0x1c: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff82768aae) at panic+0x165 sys/kern/subr_prf.c:198
__assert(ffffffff827e8b8a,ffffffff82766232,bc,ffffffff8278648f) at __assert+0x29 sys/kern/subr_prf.c:157
unveil_destroy(ffff800021676be0) at unveil_destroy+0x1a4 sys/kern/kern_unveil.c:188
exit1(ffff8000ffff18b0,0,0,1) at exit1+0x3b5 sys/kern/kern_exit.c:220
sys_exit(ffff8000ffff18b0,ffff80002e719a60,ffff80002e719ab0) at sys_exit+0x1a sys/kern/kern_exit.c:89
syscall(ffff80002e719b30) at syscall+0x4a8 sys/arch/amd64/amd64/trap.c:632
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x766acbbd2ca0, count: 7
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: kernel diagnostic assertion "ps->ps_uvncount == 0" failed: file "/syzkaller/managers/main/kernel/sys/kern/kern_unveil.c", line 188
ddb> trace
db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff82768aae) at panic+0x165 sys/kern/subr_prf.c:198
__assert(ffffffff827e8b8a,ffffffff82766232,bc,ffffffff8278648f) at __assert+0x29 sys/kern/subr_prf.c:157
unveil_destroy(ffff800021676be0) at unveil_destroy+0x1a4 sys/kern/kern_unveil.c:188
exit1(ffff8000ffff18b0,0,0,1) at exit1+0x3b5 sys/kern/kern_exit.c:220
sys_exit(ffff8000ffff18b0,ffff80002e719a60,ffff80002e719ab0) at sys_exit+0x1a sys/kern/kern_exit.c:89
syscall(ffff80002e719b30) at syscall+0x4a8 sys/arch/amd64/amd64/trap.c:632
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x766acbbd2ca0, count: -8
ddb> show registers
rdi 0
rsi 0x1
rbp 0xffff80002e719880
rbx 0x2
rdx 0
rcx 0
rax 0xffff8000ffff18b0
r8 0x101010101010101
r9 0x8080808080808080
r10 0x857e033eb12e153f
r11 0x9d222c269b5a5023
r12 0
r13 0xffff800021676be0
r14 0
r15 0x1
rip 0xffffffff81e754cc db_enter+0x1c
cs 0x8
rflags 0x246
rsp 0xffff80002e719870
ss 0x10
db_enter+0x1c: addq $0x8,%rsp
ddb> show proc
PROC (syz-executor.6) pid=144399 stat=onproc
flags process=1008<EXITING,SINGLEEXIT> proc=2000<WEXIT>
pri=32, usrpri=86, nice=20
forw=0xffffffffffffffff, list=0xffff8000ffff1b68,0xffff8000216d58b0
process=0xffff800021676be0 user=0xffff80002e714000, vmspace=0xfffffd8069d4d740
estcpu=36, cpticks=26, pctcpu=0.21
user=0, sys=2, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
51582 18956 53909 0 2 0 syz-executor.7
51582 198136 53909 0 2 0x4000000 syz-executor.7
51582 118322 53909 0 3 0x4000080 fsleep syz-executor.7
76390 372443 2843 0 2 0 syz-executor.3
76390 12073 2843 0 3 0x4000080 fsleep syz-executor.3
76390 381662 2843 0 3 0x4000080 fsleep syz-executor.3
76390 248479 2843 0 3 0x4000080 fsleep syz-executor.3
2792 192095 78746 0 2 0 syz-executor.0
2792 506004 78746 0 3 0x4000080 fsleep syz-executor.0
2792 440470 78746 0 3 0x4000080 fsleep syz-executor.0
53909 339698 10364 0 3 0x82 nanoslp syz-executor.7
2843 516464 10364 0 3 0x82 nanoslp syz-executor.3
56770 407347 10364 0 2 0x2 syz-executor.5
78746 305857 10364 0 3 0x82 nanoslp syz-executor.0
57103 1582 10364 0 2 0x2 syz-executor.2
37181 410007 10364 0 3 0x82 nanoslp syz-executor.6
466 345410 10364 0 2 0x2 syz-executor.4
46679 375316 0 0 3 0x14280 nfsidl nfsio
6319 373562 0 0 3 0x14280 nfsidl nfsio
14025 166979 0 0 3 0x14280 nfsidl nfsio
87885 192356 0 0 3 0x14280 nfsidl nfsio
80244 233693 0 0 3 0x14280 nfsidl nfsio
98188 257628 0 0 3 0x14280 nfsidl nfsio
99288 89868 0 0 3 0x14280 nfsidl nfsio
90889 461263 0 0 3 0x14280 nfsidl nfsio
64743 199284 0 0 3 0x14280 nfsidl nfsio
21962 239096 0 0 3 0x14280 nfsidl nfsio
7570 466911 0 0 3 0x14280 nfsidl nfsio
32019 466164 0 0 3 0x14280 nfsidl nfsio
27154 181820 0 0 3 0x14280 nfsidl nfsio
40931 217967 0 0 3 0x14280 nfsidl nfsio
63141 396642 0 0 3 0x14280 nfsidl nfsio
7500 208256 0 0 3 0x14280 nfsidl nfsio
63176 191702 0 0 3 0x14280 nfsidl nfsio
24814 415109 0 0 3 0x14280 nfsidl nfsio
20031 194516 0 0 3 0x14280 nfsidl nfsio
61834 407334 0 0 3 0x14280 nfsidl nfsio
22594 459439 0 0 3 0x14200 bored sosplice
60819 259865 10364 0 2 0x2 syz-executor.1
10364 192518 50904 0 3 0x82 thrsleep syz-fuzzer
10364 230675 50904 0 3 0x4000082 nanoslp syz-fuzzer
10364 237710 50904 0 3 0x4000082 wait syz-fuzzer
10364 278872 50904 0 3 0x4000082 wait syz-fuzzer
10364 144324 50904 0 3 0x4000082 wait syz-fuzzer
10364 136673 50904 0 3 0x4000082 thrsleep syz-fuzzer
10364 422599 50904 0 3 0x4000082 wait syz-fuzzer
10364 510981 50904 0 3 0x4000082 wait syz-fuzzer
10364 437404 50904 0 3 0x4000082 wait syz-fuzzer
10364 321972 50904 0 3 0x4000082 thrsleep syz-fuzzer
10364 426724 50904 0 3 0x4000082 wait syz-fuzzer
10364 85303 50904 0 3 0x4000082 kqread syz-fuzzer
10364 192889 50904 0 3 0x4000082 thrsleep syz-fuzzer
10364 490092 50904 0 3 0x4000082 wait syz-fuzzer
50904 136594 26876 0 3 0x10008a sigsusp ksh
26876 241587 90733 0 3 0x9a kqread sshd
11881 145943 1 0 3 0x100083 ttyin getty
90733 41351 1 0 3 0x88 kqread sshd
92377 395931 88884 73 3 0x1100090 kqread syslogd
88884 249159 1 0 3 0x100082 netio syslogd
95356 491456 1 0 3 0x100080 kqread resolvd
87203 308719 32920 77 3 0x100092 kqread dhcpleased
89546 112409 32920 77 3 0x100092 kqread dhcpleased
32920 495213 1 0 3 0x80 kqread dhcpleased
36198 492822 0 0 3 0x14200 bored smr
28497 42259 0 0 2 0x14200 zerothread
20149 337465 0 0 3 0x14200 aiodoned aiodoned
80045 258891 0 0 3 0x14200 syncer update
5022 72314 0 0 3 0x14200 cleaner cleaner
97675 360210 0 0 3 0x14200 reaper reaper
90706 441397 0 0 3 0x14200 pgdaemon pagedaemon
77181 449404 0 0 3 0x14200 bored viomb
34345 420509 0 0 3 0x40014200 acpi0 acpi0
36938 57377 0 0 3 0x14200 bored softnet3
89972 385291 0 0 3 0x14200 bored softnet2
75023 32805 0 0 3 0x14200 bored softnet1
72569 146262 0 0 3 0x14200 bored softnet0
83601 32501 0 0 3 0x14200 bored systqmp
44629 286167 0 0 3 0x14200 bored systq
66991 124242 0 0 2 0x40014200 softclock
56954 240868 0 0 3 0x40014200 idle0
1 413697 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 10184 6428K 6803K 78643K 23714 0
pcb 16 14K 19K 78643K 2435 0
rtable 178 15K 16K 78643K 3198 0
ifaddr 66 19K 23K 78643K 575 0
sysctl 3 1K 1K 78643K 6 0
counters 26 17K 17K 78643K 169 0
ioctlops 0 0K 4K 78643K 865 0
iov 0 0K 24K 78643K 1228 0
mount 1 1K 1K 78643K 1 0
log 0 0K 0K 78643K 4 0
vnodes 1559 97K 98K 78643K 15640 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 9K 78643K 93 0
VM map 2 1K 1K 78643K 2 0
sem 12 0K 1K 78643K 1089 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1697 195K 286K 78643K 12548 0
file desc 14 49K 69K 78643K 10779 0
sigio 0 0K 0K 78643K 1751 0
proc 62 75K 83K 78643K 1510 0
subproc 104 6K 8K 78643K 480 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 2 0K 0K 78643K 1152 0
in_multi 68 4K 7K 78643K 569 0
ether_multi 1 0K 0K 78643K 38 0
mrt 1 0K 0K 78643K 367 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 151 678K 678K 78643K 151 0
exec 0 0K 1K 78643K 2163 0
pfkey data 0 0K 0K 78643K 13 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 8 62K 64K 78643K 10 0
UVM amap 379 95K 105K 78643K 102717 0
UVM aobj 131 4K 4K 78643K 143 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 340 0
NDP 11 0K 1K 78643K 203 0
temp 124 5858K 14054K 78643K 103536 0
kqueue 12 18K 26K 78643K 577 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 1993 0 1989 17 16 1 3 0 8 0
rtentry 112 707 0 633 4 0 4 4 0 8 0
unpcb 144 5873 0 5860 72 71 1 10 0 8 0
syncache 296 48 0 48 12 12 0 1 0 8 0
tcpqe 32 241 0 241 6 6 0 1 0 8 0
tcpcb 776 3995 0 3988 115 114 1 8 0 8 0
arp 88 130 0 116 1 0 1 1 0 8 0
ipq 40 9 0 9 5 5 0 1 0 8 0
ipqe 40 153 0 153 5 5 0 1 0 8 0
inpcb 336 9778 0 9764 142 140 2 15 0 8 0
ip6q 72 3 0 3 1 1 0 1 0 8 0
ip6af 40 6 0 6 1 1 0 1 0 8 0
nd6 104 114 0 97 1 0 1 1 0 8 0
pkpcb 40 89 0 89 6 6 0 1 0 8 0
kcovpl 48 34 0 26 1 0 1 1 0 8 0
mppekey 1024 2 0 2 1 1 0 1 0 8 0
ppxss 1160 82 0 82 16 16 0 1 0 8 0
pppxif 1360 18 0 18 5 5 0 1 0 8 0
pfstscr 40 82 0 80 1 0 1 1 0 8 0
pfanchor 1288 889 331 377 43 0 43 43 0 8 0
pfstitem 24 11 0 8 1 0 1 1 0 8 0
pfstkey 128 150 0 140 1 0 1 1 0 8 0
pfstate 352 78 0 76 1 0 1 1 0 8 0
rttmr 136 28 0 28 3 3 0 1 0 8 0
art_heap8 4096 11 0 10 9 8 1 3 0 8 0
art_heap4 256 2546 0 2221 47 23 24 31 0 8 0
art_table 32 2557 0 2231 4 0 4 4 0 8 0
art_node 16 706 0 640 1 0 1 1 0 8 0
sysvmsgpl 40 70 0 41 1 0 1 1 0 8 0
semupl 112 6 0 6 1 1 0 1 0 8 0
semapl 112 1084 0 1074 1 0 1 1 0 8 0
shmpl 112 140 0 12 4 0 4 4 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 15645 0 14198 91 0 91 91 0 8 0
ffsino 240 15645 0 14198 86 0 86 86 0 8 0
nchpl 144 30138 0 29668 63 42 21 63 0 8 0
uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0
vnodes 216 5926 0 0 330 0 330 330 0 8 0
namei 1024 112774 0 112773 12 11 1 4 0 8 0
kstatmem 264 252 0 230 2 0 2 2 0 8 0
scsiplug 72 6 0 6 2 2 0 1 0 8 0
scxspl 216 86804 0 86804 30 29 1 8 0 8 1
plimitpl 152 585 0 570 1 0 1 1 0 8 0
sigapl 424 11046 0 10983 9 1 8 8 0 8 0
futexpl 64 119701 0 119695 5 4 1 1 0 8 0
knotepl 120 125545 0 125465 105 101 4 16 0 8 0
kqueuepl 184 1674 0 1666 26 25 1 7 0 8 0
pipepl 288 1862 0 1834 51 48 3 7 0 8 0
fdescpl 432 11008 0 10983 4 0 4 4 0 8 0
filepl 120 77794 0 77548 168 156 12 17 0 8 4
lockfpl 104 3894 0 3892 7 6 1 2 0 8 0
lockfspl 48 922 0 920 1 0 1 1 0 8 0
sessionpl 144 49 0 33 1 0 1 1 0 8 0
pgrppl 48 68 0 52 1 0 1 1 0 8 0
ucredpl 104 6224 0 6214 1 0 1 1 0 8 0
zombiepl 144 13561 0 13560 1 0 1 1 0 8 0
processpl 1008 11046 0 10983 10 1 9 9 0 8 0
procpl 696 27788 0 27705 21 12 9 10 0 8 0
sosppl 168 63 0 63 14 13 1 1 0 8 1
sockpl 456 17749 0 17718 446 441 5 34 0 8 0
mcl64k 65536 338 0 338 40 39 1 1 0 8 1
mcl16k 16384 132 0 132 40 39 1 1 0 8 1
mcl12k 12288 358 0 358 41 40 1 1 0 8 1
mcl9k 9216 187 0 187 38 38 0 1 0 8 0
mcl8k 8192 440 0 440 44 44 0 1 0 8 0
mcl4k 4096 1678 0 1678 13 12 1 1 0 8 1
mcl2k2 2112 65 0 65 29 29 0 1 0 8 0
mcl2k 2048 96670 0 96627 76 69 7 27 0 8 0
mtagpl 96 325 0 314 6 5 1 5 0 8 0
mbufpl 256 245860 0 245744 395 381 14 73 0 8 0
bufpl 288 19767 0 13373 457 0 457 457 0 8 0
anonpl 24 1271033 0 1254778 219 115 104 159 0 188 0
amapchunkpl 152 349429 0 348581 156 117 39 61 0 158 0
amappl16 200 31622 0 31094 67 38 29 39 0 8 0
amappl15 192 39 0 39 1 1 0 1 0 8 0
amappl14 184 234 0 222 2 1 1 2 0 8 0
amappl13 176 9 0 9 1 1 0 1 0 8 0
amappl12 168 12010 0 11983 2 0 2 2 0 8 0
amappl11 160 50 0 39 1 0 1 1 0 8 0
amappl10 152 74 0 65 1 0 1 1 0 8 0
amappl9 144 221 0 220 2 1 1 2 0 8 0
amappl8 136 460 0 353 4 0 4 4 0 8 0
amappl7 128 98 0 79 1 0 1 1 0 8 0
amappl6 120 489 0 463 2 1 1 2 0 8 0
amappl5 112 426 0 420 1 0 1 1 0 8 0
amappl4 104 1024 0 992 2 1 1 2 0 8 0
amappl3 96 64341 0 64267 3 0 3 3 0 8 0
amappl2 88 11497 0 11436 4 2 2 3 0 8 0
amappl1 80 48962 0 48461 22 11 11 22 0 8 0
amappl 88 101816 0 101594 7 1 6 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 72 142 0 12 3 0 3 3 0 8 0
uaddrrnd 24 11008 0 10982 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 11008 0 10982 1 0 1 1 0 8 0
vmmpekpl 168 79058 0 78998 4 0 4 4 0 8 0
vmmpepl 168 666311 0 664026 332 216 116 140 0 357 0
vmsppl 368 11007 0 10982 3 0 3 3 0 8 0
rwobjpl 24 169827 0 162200 48 1 47 47 0 8 0
pdppl 4096 22022 0 21964 709 645 64 66 0 8 6
pvpl 32 3371961 0 3350206 596 411 185 360 0 265 0
pmappl 216 11007 0 10982 2 0 2 2 0 8 0
extentpl 40 56 0 38 1 0 1 1 0 8 0
phpool 112 2227 0 1467 24 0 24 24 0 8 0
ddb> machine ddbcpu 0
No such command
ddb> trace
db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff82768aae) at panic+0x165 sys/kern/subr_prf.c:198
__assert(ffffffff827e8b8a,ffffffff82766232,bc,ffffffff8278648f) at __assert+0x29 sys/kern/subr_prf.c:157
unveil_destroy(ffff800021676be0) at unveil_destroy+0x1a4 sys/kern/kern_unveil.c:188
exit1(ffff8000ffff18b0,0,0,1) at exit1+0x3b5 sys/kern/kern_exit.c:220
sys_exit(ffff8000ffff18b0,ffff80002e719a60,ffff80002e719ab0) at sys_exit+0x1a sys/kern/kern_exit.c:89
syscall(ffff80002e719b30) at syscall+0x4a8 sys/arch/amd64/amd64/trap.c:632
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x766acbbd2ca0, count: -8
ddb> machine ddbcpu 1
No such command
ddb> trace
db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff82768aae) at panic+0x165 sys/kern/subr_prf.c:198
__assert(ffffffff827e8b8a,ffffffff82766232,bc,ffffffff8278648f) at __assert+0x29 sys/kern/subr_prf.c:157
unveil_destroy(ffff800021676be0) at unveil_destroy+0x1a4 sys/kern/kern_unveil.c:188
exit1(ffff8000ffff18b0,0,0,1) at exit1+0x3b5 sys/kern/kern_exit.c:220
sys_exit(ffff8000ffff18b0,ffff80002e719a60,ffff80002e719ab0) at sys_exit+0x1a sys/kern/kern_exit.c:89
syscall(ffff80002e719b30) at syscall+0x4a8 sys/arch/amd64/amd64/trap.c:632
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x766acbbd2ca0, count: -8
---
This report is generated by a bot. It may contain errors.
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If you want to undo deduplication, reply with:
#syz undup
syzbot
Feb 16, 2024, 8:00:19 PMFeb 16
to 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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