panic: kernel diagnosti
c assertion "(pg->pg_fl
ags & (PQ_INACTIVE|PQ_A
CTIVE)) == 0" failed: f
ile "/syzkaller/manager
s/main/kernel/sys/uvm/u
vm_page.c", line 1306
Stopped at db_ente
r+0x25: addq $0x8,%r
sp
TID PID UID P
RFLAGS PFLAGS CPU C
OMMAND
*160738 17253 0 0
0 0 syz-e
xecutor
db_enter() at db_enter+
0x25
panic(ffffffff833791f3)
at panic+0x1cf sys/kern/subr_prf.c:198
__assert(ffffffff833b9a
e2,ffffffff833a5ef6,51a
,ffffffff833eb71f) at _
_assert+0x29
uvm_pageactivate(fffffd
8006e5e300) at uvm_page
activate+0x1e2
uvm_fault_lower(ffff800
037e38e30,ffff800037e38
e68,ffff800037e38db0) a
t uvm_fault_lower+0x22a
uvm_fault(fffffd806c9cd
a28,200000000000,0,2) a
t uvm_fault+0x241
upageflttrap(ffff800037
e38fd0,200000000040) at
upageflttrap+0xa0
usertrap(ffff800037e38f
d0) at usertrap+0x413 sys/arch/amd64/amd64/trap.c:632
recall_trap() at recall
_trap+0x8
end of kernel
end trace frame: 0x7842
ab0b6c20, count: 6
https://www.openbsd.org
/ddb.html describes the
minimum info required i
n bug
reports. Insufficient i
nfo makes it difficult t
o find and fix bugs.
ddb>
ddb> set $lines = 0
ddb> set $maxwidth = 0
ddb> show panic
*cpu0: kernel diagnostic assertion "(pg->pg_flags & (PQ_INACTIVE|PQ_ACTIVE)) == 0" failed: file "/syzkaller/managers/main/kernel/sys/uvm/uvm_page.c", line 1306
ddb> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff833791f3) at panic+0x1cf sys/kern/subr_prf.c:198
__assert(ffffffff833b9ae2,ffffffff833a5ef6,51a,ffffffff833eb71f) at __assert+0x29 sys/kern/subr_prf.c:-1
uvm_pageactivate(fffffd8006e5e300) at uvm_pageactivate+0x1e2 sys/uvm/uvm_page.c:1303
uvm_fault_lower(ffff800037e38e30,ffff800037e38e68,ffff800037e38db0) at uvm_fault_lower+0x22a sys/uvm/uvm_fault.c:1391
uvm_fault(fffffd806c9cda28,200000000000,0,2) at uvm_fault+0x241 sys/uvm/uvm_fault.c:-1
upageflttrap(ffff800037e38fd0,200000000040) at upageflttrap+0xa0 sys/arch/amd64/amd64/trap.c:192
usertrap(ffff800037e38fd0) at usertrap+0x413 sys/arch/amd64/amd64/trap.c:632
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7842ab0b6c20, count: -9
ddb> show registers
rdi 0
rsi 0x1
rbp 0xffff800037e38b70
rbx 0
rdx 0
rcx 0
rax 0xffff80003c93afb0
r8 0x101010101010101
r9 0x8080808080808080
r10 0x735278ebe4b070e3
r11 0x75d7d3770a59dd82
r12 0
r13 0xfffffd8006e5e300
r14 0
r15 0x1
rip 0xffffffff81744d05 db_enter+0x25
cs 0x8
rflags 0x246
rsp 0xffff800037e38b60
ss 0
db_enter+0x25: addq $0x8,%rsp
ddb> show proc
PROC (syz-executor) tid=160738 pid=17253 tcnt=3 stat=onproc
flags process=0 proc=0
runpri=86, usrpri=86, slppri=32, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff80002a7a6010,0xffff80003c93b258
process=0xffff8000ffff8918 user=0xffff800037e34000, vmspace=0xfffffd806c9cda28
estcpu=36, cpticks=6, pctcpu=0.0, user=4, sys=2, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
*17253 160738 1434 0 7 0 syz-executor
17253 167541 1434 0 3 0x4000080 fsleep syz-executor
17253 87000 1434 0 3 0x4000080 fsleep syz-executor
33634 402595 90861 0 2 0 syz-executor
33634 407213 90861 0 3 0x4000080 fsleep syz-executor
33634 203760 90861 0 3 0x4000080 fsleep syz-executor
65950 83865 94858 0 2 0 syz-executor
65950 348637 94858 0 3 0x4000080 lockf syz-executor
65950 231666 94858 0 3 0x4000080 fsleep syz-executor
65950 348255 94858 0 3 0x4000080 fsleep syz-executor
53503 253739 38124 0 2 0 syz-executor
53503 111527 38124 0 2 0x4000000 syz-executor
75098 221207 78961 0 2 0 syz-executor
47905 221780 64786 0 3 0x3000 suspend syz-executor
47905 249295 64786 0 2 0x4081000 syz-executor
47905 258123 64786 0 2 0x4081000 syz-executor
47905 182704 64786 0 2 0x4081000 syz-executor
74007 85003 69437 0 2 0 syz-executor
74007 283848 69437 0 3 0x4000080 fsleep syz-executor
74007 289095 69437 0 2 0x4000000 syz-executor
74007 455891 69437 0 2 0x4000000 syz-executor
78555 173961 10010 0 2 0 syz-executor
78555 505372 10010 0 3 0x4000080 ttyout syz-executor
78555 35499 10010 0 3 0x4000080 ttyin syz-executor
78555 125206 10010 0 3 0x4000080 fsleep syz-executor
78961 18763 86534 0 2 0xc82 syz-executor
94858 229853 86534 0 2 0xc82 syz-executor
47246 7655 1 0 3 0x100083 ttyopn getty
10010 198734 86534 0 2 0xc82 syz-executor
38124 43011 86534 0 2 0xc82 syz-executor
69437 517291 86534 0 2 0xc82 syz-executor
60754 48615 0 0 3 0x14280 nfsidl nfsio
31436 188286 0 0 3 0x14280 nfsidl nfsio
48601 515961 0 0 3 0x14280 nfsidl nfsio
99821 50136 0 0 3 0x14280 nfsidl nfsio
90871 483816 0 0 3 0x14280 nfsidl nfsio
7826 434982 0 0 3 0x14280 nfsidl nfsio
31427 365224 0 0 3 0x14280 nfsidl nfsio
23654 7212 0 0 3 0x14280 nfsidl nfsio
90410 463341 0 0 3 0x14280 nfsidl nfsio
8173 371016 0 0 3 0x14280 nfsidl nfsio
59955 297976 0 0 3 0x14280 nfsidl nfsio
42825 422332 0 0 3 0x14280 nfsidl nfsio
13295 295461 0 0 3 0x14280 nfsidl nfsio
21366 262291 0 0 3 0x14280 nfsidl nfsio
59843 270799 0 0 3 0x14280 nfsidl nfsio
560 508633 0 0 3 0x14280 nfsidl nfsio
12353 29695 0 0 3 0x14280 nfsidl nfsio
34749 466191 0 0 3 0x14280 nfsidl nfsio
53148 72358 0 0 3 0x14280 nfsidl nfsio
7397 215514 0 0 3 0x14280 nfsidl nfsio
64786 411196 86534 0 2 0xc82 syz-executor
90861 223158 86534 0 2 0xc82 syz-executor
1434 218531 86534 0 2 0xc82 syz-executor
86534 91421 93667 0 3 0x82 kqread syz-executor
93667 474782 10232 0 3 0x10008a sigsusp ksh
10232 190583 36750 0 3 0x98 kqread sshd-session
36750 515406 39347 0 3 0x92 kqread sshd-session
39347 88212 1 0 3 0x88 kqread sshd
77128 195617 10719 73 3 0x1100090 kqread syslogd
10719 126263 1 0 3 0x100082 sbwait syslogd
18815 189702 1 0 3 0x100080 kqread resolvd
27176 201587 55546 77 3 0x100092 kqread dhcpleased
70842 135512 55546 77 3 0x100092 kqread dhcpleased
55546 296448 1 0 3 0x80 kqread dhcpleased
41004 147682 0 0 3 0x14200 bored smr
59549 379171 0 0 2 0x14200 zerothread
92003 488335 0 0 3 0x14200 aiodoned aiodoned
25515 88843 0 0 3 0x14200 syncer update
68012 321568 0 0 3 0x14200 cleaner cleaner
34735 392263 0 0 3 0x14200 reaper reaper
40126 114242 0 0 3 0x14200 pgdaemon pagedaemon
95086 363557 0 0 3 0x14200 bored viomb
37510 346673 0 0 3 0x40014200 acpi0 acpi0
47769 365955 0 0 3 0x14200 bored softnet0
96968 131082 0 0 3 0x14200 bored systqmp
51997 417971 0 0 3 0x14200 bored systq
83737 74587 0 0 3 0x40014200 tmoslp softclock
74999 221668 0 0 3 0x40014200 idle0
1 105928 0 0 3 0x80082 wait init
0 0 -1 0 3 0x10010200 scheduler swapper
ddb> show all locks
No such command
ddb> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10217 11048K 12376K 166960K 15807 0
pcb 17 17K 25K 166960K 863 0
rtable 180 11K 11K 166960K 854 0
pf 35 14K 17K 166960K 328 0
ifaddr 31 5K 8K 166960K 181 0
ifgroup 55 2K 2K 166960K 328 0
sysctl 4 1K 9K 166960K 18 0
counters 35 18K 18K 166960K 181 0
ioctlops 0 0K 4K 166960K 658 0
iov 0 0K 28K 166960K 264 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1575 99K 99K 166960K 4075 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 9K 166960K 41 0
VM map 2 1K 1K 166960K 2 0
sem 12 0K 1K 166960K 87 0
dirhash 12 2K 2K 166960K 30 0
ACPI 1692 195K 286K 166960K 12470 0
file desc 18 65K 240K 166960K 2372 0
sigio 0 0K 0K 166960K 128 0
proc 61 59K 100K 166960K 1014 0
subproc 72 4K 4K 166960K 153 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 472 0
in_multi 53 4K 7K 166960K 262 0
ether_multi 1 0K 0K 166960K 20 0
mrt 0 0K 0K 166960K 12 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 277 1235K 1235K 166960K 277 0
exec 0 0K 1K 166960K 865 0
fusefs mount 1 32K 32K 166960K 1 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 238 144K 171K 166960K 22763 0
UVM aobj 53 16K 16K 166960K 56 0
pinsyscall 39 78K 94K 166960K 3706 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 0K 166960K 186 0
NDP 12 0K 1K 166960K 138 0
temp 79 8672K 8926K 166960K 97605 0
kqueue 16 24K 32K 166960K 410 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 120 207 0 200 1 0 1 1 0 8 0
rtentry 136 242 0 187 4 0 4 4 0 8 0
unpcb 144 1908 0 1892 4 0 4 4 0 8 3
syncache 336 15 0 15 2 1 1 1 0 8 1
tcpqe 32 18 0 18 2 1 1 1 0 8 1
tcpcb 736 893 0 889 16 8 8 10 0 8 7
arp 96 38 0 27 1 0 1 1 0 8 0
ipq 40 10 0 9 1 0 1 1 0 8 0
ipqe 40 16 0 15 1 0 1 1 0 8 0
inpcb 328 2477 0 2466 18 10 8 12 0 8 7
ip6q 72 8 0 8 1 0 1 1 0 8 1
ip6af 40 13 0 13 1 0 1 1 0 8 1
nd6 112 56 0 45 1 0 1 1 0 8 0
pkpcb 40 47 0 47 2 1 1 1 0 8 1
kcovpl 48 17 0 9 1 0 1 1 0 8 0
mppekey 1024 2 0 2 1 1 0 1 0 8 0
ppxss 1072 111 0 110 2 1 1 1 0 8 0
pppxif 1384 10 0 9 2 1 1 1 0 8 0
pfrktable 1344 1 0 1 1 0 1 1 0 8 1
pfrule 1344 2 0 1 1 0 1 1 0 8 0
rttmr 136 1 0 1 1 1 0 1 0 8 0
art_heap8 4096 4 0 0 4 0 4 4 0 8 0
art_heap4 256 1076 0 818 30 11 19 29 0 8 0
art_table 40 1080 0 818 5 0 5 5 0 8 0
art_node 32 241 0 191 1 0 1 1 0 8 0
sysvmsgpl 40 51 0 12 1 0 1 1 0 8 0
semapl 112 84 0 74 1 0 1 1 0 8 0
shmpl 112 45 0 2 2 0 2 2 0 8 0
dirhash 1024 29 0 12 3 0 3 3 0 8 0
dino2pl 256 5721 0 4205 96 0 96 96 0 8 0
ffsino 256 5721 0 4205 96 0 96 96 0 8 0
nchpl 144 8935 0 7215 64 0 64 64 0 8 0
rtmask 32 25 0 25 2 1 1 1 0 8 1
vnodes 216 5926 0 0 330 0 330 330 0 8 0
namei 1024 32968 0 32966 3 2 1 2 0 8 0
vcpupl 3904 7 0 0 1 0 1 1 0 8 0
vmpool 808 8 0 1 1 0 1 1 0 8 0
kstatmem 264 206 0 182 3 1 2 3 0 8 0
acpiwqpl 32 1 0 1 1 0 1 1 1 8 1
scsiplug 72 7 0 7 1 1 0 1 0 8 0
scxspl 216 31410 0 31410 9 7 2 8 1 8 2
plimitpl 152 742 0 725 1 0 1 1 0 8 0
sigapl 424 2661 0 2598 8 0 8 8 0 8 0
knotepl 120 87222 0 87170 35 26 9 17 0 8 5
kqueuepl 184 798 0 785 5 2 3 3 0 8 2
pipepl 304 435 0 375 7 2 5 5 0 8 0
fdescpl 448 2624 0 2594 5 1 4 5 0 8 0
filepl 120 18163 0 17867 15 4 11 13 0 8 1
lockfpl 104 1457 0 1450 2 1 1 2 0 8 0
lockfspl 48 491 0 486 1 0 1 1 0 8 0
sessionpl 144 40 0 32 1 0 1 1 0 8 0
pgrppl 48 123 0 106 1 0 1 1 0 8 0
ucredpl 104 2828 0 2816 1 0 1 1 0 8 0
zombiepl 144 3002 0 3001 1 0 1 1 0 8 0
processpl 1152 2661 0 2598 5 0 5 5 0 8 0
procpl 664 6041 0 5960 8 1 7 8 0 8 0
sosppl 176 12 0 12 2 1 1 1 0 8 1
sockpl 552 4846 0 4812 17 6 11 13 0 8 8
mcl64k 65536 138 0 138 1 0 1 1 0 8 1
mcl16k 16384 3 0 3 2 1 1 1 0 8 1
mcl12k 12288 1 0 1 1 0 1 1 0 8 1
mcl9k 9216 3 0 3 2 1 1 1 0 8 1
mcl8k 8192 25 0 25 2 1 1 1 0 8 1
mcl4k 4096 5415 0 5361 13 5 8 13 0 8 0
mcl2k2 2112 3 0 3 1 1 0 1 0 8 0
mcl2k 2048 3569 0 3564 6 3 3 5 0 8 1
mtagpl 96 120 0 116 3 1 2 3 0 8 1
mbufpl 256 27866 0 27712 21 4 17 21 0 8 0
bufpl 280 11309 0 5088 445 0 445 445 0 8 0
anonpl 24 382301 0 379066 80 23 57 57 0 187 20
amapchunkpl 152 80009 0 79386 40 7 33 34 0 158 8
amappl16 200 6270 0 6233 35 21 14 15 0 8 8
amappl15 192 37 0 37 1 1 0 1 0 8 0
amappl14 184 103 0 103 2 1 1 1 0 8 1
amappl13 176 520 0 519 1 0 1 1 0 8 0
amappl12 168 3056 0 3017 3 1 2 3 0 8 0
amappl11 160 101 0 101 1 1 0 1 0 8 0
amappl10 152 54 0 44 1 0 1 1 0 8 0
amappl9 144 243 0 242 1 0 1 1 0 8 0
amappl8 136 19 0 16 1 0 1 1 0 8 0
amappl7 128 120 0 118 1 0 1 1 0 8 0
amappl6 120 386 0 374 1 0 1 1 0 8 0
amappl5 112 78 0 70 1 0 1 1 0 8 0
amappl4 104 475 0 450 1 0 1 1 0 8 0
amappl3 96 15726 0 15616 4 0 4 4 0 8 0
amappl2 88 669 0 612 2 0 2 2 0 8 0
amappl1 80 19838 0 19298 15 2 13 15 0 8 0
amappl 88 21446 0 21276 5 0 5 5 0 92 0
uvmvnodes 80 165 0 0 4 0 4 4 0 8 0
dma65536 65536 1 0 1 1 1 0 1 0 8 0
dma4096 4096 1 0 1 1 1 0 1 0 8 0
dma2048 2048 1 0 1 1 1 0 1 0 8 0
dma1024 1024 2 0 1 1 0 1 1 0 8 0
dma256 256 6 0 6 1 1 0 1 0 8 0
dma128 128 254 0 254 1 1 0 1 0 8 0
dma64 64 9 0 9 2 1 1 1 0 8 1
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 55 0 3 1 0 1 1 0 8 0
uaddrrnd 24 2624 0 2594 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 2624 0 2594 1 0 1 1 0 8 0
vmmpekpl 168 20306 0 20244 3 0 3 3 0 8 0
vmmpepl 168 168207 0 166338 100 8 92 93 0 357 5
vmsppl 368 2623 0 2594 4 1 3 4 0 8 0
rwobjpl 40 42151 0 41074 14 0 14 14 0 8 0
pdppl 4096 5270 0 5197 124 51 73 82 0 8 0
pvpl 32 1116805 0 1108329 160 27 133 133 0 265 38
pmappl 216 2631 0 2595 3 0 3 3 0 8 0
extentpl 40 45 0 27 1 0 1 1 0 8 0
phpool 112 435 0 94 11 0 11 11 0 8 0
ddb> machine ddbcpu 0
No such command
ddb> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff833791f3) at panic+0x1cf sys/kern/subr_prf.c:198
__assert(ffffffff833b9ae2,ffffffff833a5ef6,51a,ffffffff833eb71f) at __assert+0x29 sys/kern/subr_prf.c:-1
uvm_pageactivate(fffffd8006e5e300) at uvm_pageactivate+0x1e2 sys/uvm/uvm_page.c:1303
uvm_fault_lower(ffff800037e38e30,ffff800037e38e68,ffff800037e38db0) at uvm_fault_lower+0x22a sys/uvm/uvm_fault.c:1391
uvm_fault(fffffd806c9cda28,200000000000,0,2) at uvm_fault+0x241 sys/uvm/uvm_fault.c:-1
upageflttrap(ffff800037e38fd0,200000000040) at upageflttrap+0xa0 sys/arch/amd64/amd64/trap.c:192
usertrap(ffff800037e38fd0) at usertrap+0x413 sys/arch/amd64/amd64/trap.c:632
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7842ab0b6c20, count: -9
ddb> machine ddbcpu 1
No such command
ddb> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff833791f3) at panic+0x1cf sys/kern/subr_prf.c:198
__assert(ffffffff833b9ae2,ffffffff833a5ef6,51a,ffffffff833eb71f) at __assert+0x29 sys/kern/subr_prf.c:-1
uvm_pageactivate(fffffd8006e5e300) at uvm_pageactivate+0x1e2 sys/uvm/uvm_page.c:1303
uvm_fault_lower(ffff800037e38e30,ffff800037e38e68,ffff800037e38db0) at uvm_fault_lower+0x22a sys/uvm/uvm_fault.c:1391
uvm_fault(fffffd806c9cda28,200000000000,0,2) at uvm_fault+0x241 sys/uvm/uvm_fault.c:-1
upageflttrap(ffff800037e38fd0,200000000040) at upageflttrap+0xa0 sys/arch/amd64/amd64/trap.c:192
usertrap(ffff800037e38fd0) at usertrap+0x413 sys/arch/amd64/amd64/trap.c:632
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7842ab0b6c20, count: -9