assert "dupe == NULL" failed in uvm_page.c (4)
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syzbot
Nov 9, 2023, 7:44:22 PM11/9/23
to syzkaller-o...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 8eb093d04bc2 Forgot to fix the RFC number in the new comment
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=1737a35b680000
kernel config: https://syzkaller.appspot.com/x/.config?x=1bc15e68cd2a49e5
dashboard link: https://syzkaller.appspot.com/bug?extid=2eb1db0751db0749a856
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/8351871ef13a/disk-8eb093d0.raw.xz
bsd.gdb: https://storage.googleapis.com/syzbot-assets/37ecc80f88d6/bsd-8eb093d0.gdb.xz
kernel image: https://storage.googleapis.com/syzbot-assets/118b9612889a/kernel-8eb093d0.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+2eb1db...@syzkaller.appspotmail.com
panic: kernel diagnostic assertion "dupe == NULL" failed: file "/syzkaller/managers/main/kernel/sys/uvm/uvm_page.c", line 144
Stopped at db_enter+0x1c: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
* 80468 41518 0 0 0 0 syz-executor.1
db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff827875bd) at panic+0x165 sys/kern/subr_prf.c:198
__assert(ffffffff82801481,ffffffff827b0ace,90,ffffffff8275fad6) at __assert+0x29 sys/kern/subr_prf.c:157
uvm_pagealloc_pg(fffffd8006a78700,fffffd806b3cc018,3e698bf000,0) at uvm_pagealloc_pg+0x427 uvm_pageinsert sys/uvm/uvm_page.c:138 [inline]
uvm_pagealloc_pg(fffffd8006a78700,fffffd806b3cc018,3e698bf000,0) at uvm_pagealloc_pg+0x427 sys/uvm/uvm_page.c:709
uvm_pagealloc(fffffd806b3cc018,3e698bf000,0,3) at uvm_pagealloc+0x1ec sys/uvm/uvm_page.c:917
pmap_get_ptp(fffffd806b3cc008,7cd317fe7000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1209
pmap_enter(fffffd806b3cc008,7cd317fe7000,6804a000,1,20) at pmap_enter+0x29d sys/arch/amd64/amd64/pmap.c:2716
uvm_fault_upper_lookup(ffff80002ba0c480,ffff80002ba0c4b8,ffff80002ba0c380,ffff80002ba0c400) at uvm_fault_upper_lookup+0x2a1 sys/uvm/uvm_fault.c:895
uvm_fault(fffffd806cb64a28,7cd317fe8000,0,1) at uvm_fault+0x109 sys/uvm/uvm_fault.c:605
upageflttrap(ffff80002ba0c600,7cd317fe8a20) at upageflttrap+0x80 sys/arch/amd64/amd64/trap.c:188
usertrap(ffff80002ba0c600) at usertrap+0x20d sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7cd317fe8a50, count: 3
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 "dupe == NULL" failed: file "/syzkaller/managers/main/kernel/sys/uvm/uvm_page.c", line 144
ddb> trace
db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff827875bd) at panic+0x165 sys/kern/subr_prf.c:198
__assert(ffffffff82801481,ffffffff827b0ace,90,ffffffff8275fad6) at __assert+0x29 sys/kern/subr_prf.c:157
uvm_pagealloc_pg(fffffd8006a78700,fffffd806b3cc018,3e698bf000,0) at uvm_pagealloc_pg+0x427 uvm_pageinsert sys/uvm/uvm_page.c:138 [inline]
uvm_pagealloc_pg(fffffd8006a78700,fffffd806b3cc018,3e698bf000,0) at uvm_pagealloc_pg+0x427 sys/uvm/uvm_page.c:709
uvm_pagealloc(fffffd806b3cc018,3e698bf000,0,3) at uvm_pagealloc+0x1ec sys/uvm/uvm_page.c:917
pmap_get_ptp(fffffd806b3cc008,7cd317fe7000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1209
pmap_enter(fffffd806b3cc008,7cd317fe7000,6804a000,1,20) at pmap_enter+0x29d sys/arch/amd64/amd64/pmap.c:2716
uvm_fault_upper_lookup(ffff80002ba0c480,ffff80002ba0c4b8,ffff80002ba0c380,ffff80002ba0c400) at uvm_fault_upper_lookup+0x2a1 sys/uvm/uvm_fault.c:895
uvm_fault(fffffd806cb64a28,7cd317fe8000,0,1) at uvm_fault+0x109 sys/uvm/uvm_fault.c:605
upageflttrap(ffff80002ba0c600,7cd317fe8a20) at upageflttrap+0x80 sys/arch/amd64/amd64/trap.c:188
usertrap(ffff80002ba0c600) at usertrap+0x20d sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7cd317fe8a50, count: -12
ddb> show registers
rdi 0
rsi 0x1
rbp 0xffff80002ba0bf90
rbx 0
rdx 0
rcx 0
rax 0xffff8000299d0aa0
r8 0x101010101010101
r9 0x8080808080808080
r10 0x680335a9788762f7
r11 0x223382c6ba0a995d
r12 0
r13 0x3e698bf000
r14 0
r15 0x1
rip 0xffffffff824aca5c db_enter+0x1c
cs 0x8
rflags 0x246
rsp 0xffff80002ba0bf80
ss 0
db_enter+0x1c: addq $0x8,%rsp
ddb> show proc
PROC (syz-executor.1) tid=80468 pid=41518 tcnt=2 stat=onproc
flags process=0 proc=0
runpri=81, usrpri=81, slppri=16, nice=20
wchan=0x0, wmesg=, ps_single=0x0
forw=0xffffffffffffffff, list=0xffff8000299cf560,0xffff8000299cf818
process=0xffff8000ffff0bd0 user=0xffff80002ba07000, vmspace=0xfffffd806cb64a28
estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
76250 239338 55012 0 2 0 syz-executor.2
76250 60534 55012 0 3 0x4000080 fsleep syz-executor.2
25342 11083 53677 0 2 0 syz-executor.0
25342 173496 53677 0 3 0x4000080 fsleep syz-executor.0
23326 211534 71742 0 2 0 syz-executor.4
23326 433664 71742 0 3 0x4000080 fsleep syz-executor.4
23326 6095 71742 0 3 0x4000080 fsleep syz-executor.4
52999 63057 14578 0 2 0 syz-executor.6
52999 219791 14578 0 2 0x4000000 syz-executor.6
374 120462 12348 0 2 0 syz-executor.7
374 368360 12348 0 3 0x4000080 fsleep syz-executor.7
21691 33913 54114 0 2 0 syz-executor.5
21691 44706 54114 0 3 0x4000080 fsleep syz-executor.5
*41518 80468 95986 0 7 0 syz-executor.1
41518 31948 95986 0 3 0x4000080 fsleep syz-executor.1
12348 397590 56437 0 3 0x82 nanoslp syz-executor.7
55012 227384 56437 0 3 0x82 nanoslp syz-executor.2
3466 58588 56437 0 2 0x2 syz-executor.3
91399 510825 0 0 3 0x14200 bored sosplice
83120 186376 0 0 3 0x14280 nfsidl nfsio
45495 72033 0 0 3 0x14280 nfsidl nfsio
81716 275515 0 0 3 0x14280 nfsidl nfsio
9402 103262 0 0 3 0x14280 nfsidl nfsio
35671 61017 0 0 3 0x14280 nfsidl nfsio
49780 319249 0 0 3 0x14280 nfsidl nfsio
4539 342193 0 0 3 0x14280 nfsidl nfsio
39661 414651 0 0 3 0x14280 nfsidl nfsio
85822 234816 0 0 3 0x14280 nfsidl nfsio
7824 214863 0 0 3 0x14280 nfsidl nfsio
50003 35656 0 0 3 0x14280 nfsidl nfsio
74551 445076 0 0 3 0x14280 nfsidl nfsio
69656 233894 0 0 3 0x14280 nfsidl nfsio
53120 465879 0 0 3 0x14280 nfsidl nfsio
69801 150404 0 0 3 0x14280 nfsidl nfsio
14763 512865 0 0 3 0x14280 nfsidl nfsio
49820 225949 0 0 3 0x14280 nfsidl nfsio
54877 126620 0 0 3 0x14280 nfsidl nfsio
48959 215791 0 0 3 0x14280 nfsidl nfsio
88340 237052 0 0 3 0x14280 nfsidl nfsio
35557 195177 0 0 3 0x14200 acct acct
14578 299801 56437 0 3 0x82 nanoslp syz-executor.6
71742 3106 56437 0 3 0x82 nanoslp syz-executor.4
54114 107599 56437 0 3 0x82 nanoslp syz-executor.5
53677 48010 56437 0 3 0x82 nanoslp syz-executor.0
95986 420654 56437 0 3 0x82 nanoslp syz-executor.1
56437 199662 92721 0 3 0x2000082 thrsleep syz-fuzzer
56437 444419 92721 0 3 0x6000082 thrsleep syz-fuzzer
56437 454660 92721 0 3 0x6000082 thrsleep syz-fuzzer
56437 502001 92721 0 3 0x6000082 wait syz-fuzzer
56437 494021 92721 0 3 0x6000082 wait syz-fuzzer
56437 448675 92721 0 3 0x6000082 wait syz-fuzzer
56437 132156 92721 0 3 0x6000082 wait syz-fuzzer
56437 26781 92721 0 3 0x6000082 wait syz-fuzzer
56437 265176 92721 0 3 0x6000082 wait syz-fuzzer
56437 203573 92721 0 3 0x6000082 thrsleep syz-fuzzer
56437 73208 92721 0 3 0x6000082 thrsleep syz-fuzzer
56437 158131 92721 0 3 0x6000082 wait syz-fuzzer
56437 488718 92721 0 3 0x6000082 wait syz-fuzzer
56437 137326 92721 0 3 0x6000082 kqread syz-fuzzer
92721 44877 21272 0 3 0x10008a sigsusp ksh
21272 238691 90209 0 3 0x9a kqread sshd
78187 222573 1 0 3 0x100083 ttyopn getty
90209 368929 1 0 3 0x88 kqread sshd
97578 323432 50717 73 3 0x1100090 kqread syslogd
50717 190509 1 0 3 0x100082 netio syslogd
94174 173179 1 0 3 0x100080 kqread resolvd
58651 286741 42020 77 3 0x100092 kqread dhcpleased
78637 474482 42020 77 3 0x100092 kqread dhcpleased
42020 263744 1 0 3 0x80 kqread dhcpleased
77638 139218 0 0 3 0x14200 bored smr
75849 93240 0 0 2 0x14200 zerothread
22511 234713 0 0 3 0x14200 aiodoned aiodoned
75786 154276 0 0 3 0x14200 syncer update
29769 1604 0 0 3 0x14200 cleaner cleaner
96491 94661 0 0 3 0x14200 reaper reaper
52098 37068 0 0 3 0x14200 pgdaemon pagedaemon
61089 142721 0 0 3 0x14200 bored viomb
39594 58376 0 0 3 0x40014200 acpi0 acpi0
37666 19834 0 0 3 0x14200 bored softnet3
51626 379077 0 0 3 0x14200 bored softnet2
4414 22379 0 0 3 0x14200 bored softnet1
36671 478696 0 0 3 0x14200 bored softnet0
51723 430112 0 0 3 0x14200 bored systqmp
944 24487 0 0 3 0x14200 bored systq
55509 522695 0 0 3 0x40014200 tmoslp softclock
17212 221808 0 0 3 0x40014200 idle0
1 197922 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 10182 6467K 7046K 78643K 15195 0
pcb 13 10K 12K 78643K 252 0
rtable 237 7K 7K 78643K 502 0
pf 32 9K 9K 78643K 70 0
ifaddr 44 11K 11K 78643K 76 0
ifgroup 55 2K 2K 78643K 121 0
sysctl 3 0K 1K 78643K 7 0
counters 29 17K 17K 78643K 45 0
ioctlops 0 0K 2K 78643K 2071 0
iov 0 0K 16K 78643K 329 0
mount 1 1K 1K 78643K 1 0
log 0 0K 0K 78643K 4 0
vnodes 1373 86K 86K 78643K 2466 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 5K 78643K 32 0
VM map 2 1K 1K 78643K 2 0
sem 12 1K 1K 78643K 103 0
dirhash 12 2K 2K 78643K 15 0
ACPI 1697 195K 286K 78643K 12548 0
file desc 17 61K 65K 78643K 6239 0
sigio 0 0K 0K 78643K 31 0
proc 58 59K 75K 78643K 672 0
subproc 104 6K 6K 78643K 156 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 239 0
in_multi 99 7K 7K 78643K 192 0
ether_multi 1 0K 0K 78643K 8 0
mrt 1 0K 0K 78643K 3 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 79 360K 360K 78643K 79 0
exec 0 0K 1K 78643K 764 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 380 142K 144K 78643K 57657 0
UVM aobj 131 4K 4K 78643K 132 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 63 0
NDP 12 0K 2K 78643K 52 0
temp 74 5912K 5977K 78643K 40122 0
kqueue 12 18K 24K 78643K 159 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 75 0 72 1 0 1 1 0 8 0
rtentry 112 156 0 46 4 0 4 4 0 8 0
unpcb 144 2358 0 2345 24 23 1 6 0 8 0
syncache 304 30 0 30 4 4 0 1 0 8 0
sackhl 24 1 0 1 1 1 0 1 0 8 0
tcpqe 32 252 0 252 4 4 0 1 0 8 0
tcpcb 808 418 0 406 14 12 2 9 0 8 0
arp 88 26 0 8 1 0 1 1 0 8 0
ipq 40 51 0 41 1 0 1 1 0 8 0
ipqe 40 2045 0 2033 1 0 1 1 0 8 0
inpcb 336 1320 0 1303 29 22 7 9 0 8 5
nd6 104 37 0 13 1 0 1 1 0 8 0
pkpcb 40 1 0 1 1 1 0 1 0 8 0
kcovpl 48 12 0 4 1 0 1 1 0 8 0
ppxss 1160 2 0 2 2 2 0 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 641 0 186 29 0 29 29 0 8 0
art_table 32 642 0 186 4 0 4 4 0 8 0
art_node 16 155 0 55 1 0 1 1 0 8 0
sysvmsgpl 40 21 0 16 1 0 1 1 0 8 0
semupl 112 1 0 1 1 1 0 1 0 8 0
semapl 112 92 0 82 1 0 1 1 0 8 0
shmpl 112 129 0 1 4 0 4 4 0 8 0
dirhash 1024 19 0 2 3 0 3 3 0 8 0
dino2pl 256 8171 0 6725 91 0 91 91 0 8 0
ffsino 240 8171 0 6725 86 0 86 86 0 8 0
nchpl 144 15431 0 13789 63 0 63 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 40635 0 40635 3 2 1 2 0 8 1
vcpupl 2048 9 0 1 2 0 2 2 0 8 0
vmpool 664 9 0 1 1 0 1 1 0 8 0
kstatmem 264 56 0 32 2 0 2 2 0 8 0
scxspl 216 44949 0 44949 12 11 1 8 1 8 1
plimitpl 152 177 0 162 1 0 1 1 0 8 0
sigapl 424 6551 0 6485 8 0 8 8 0 8 0
futexpl 64 34280 0 34273 1 0 1 1 0 8 0
knotepl 120 52675 0 52595 10 7 3 10 0 8 0
kqueuepl 184 382 0 374 8 7 1 4 0 8 0
pipepl 288 984 0 956 11 6 5 7 0 8 2
fdescpl 432 6513 0 6485 4 0 4 4 0 8 0
filepl 120 20864 0 20625 30 20 10 14 0 8 2
lockfpl 104 979 0 976 1 0 1 1 0 8 0
lockfspl 48 461 0 458 1 0 1 1 0 8 0
sessionpl 144 27 0 11 1 0 1 1 0 8 0
pgrppl 48 405 0 389 1 0 1 1 0 8 0
ucredpl 104 2178 0 2168 1 0 1 1 0 8 0
zombiepl 144 6485 0 6485 1 0 1 1 0 8 1
processpl 1008 6551 0 6485 10 1 9 9 0 8 0
procpl 680 14675 0 14588 10 1 9 9 0 8 1
sosppl 168 39 0 39 2 2 0 1 0 8 0
sockpl 456 3755 0 3722 117 104 13 32 0 8 8
mcl64k 65536 148 0 148 6 5 1 1 0 8 1
mcl16k 16384 58 0 58 9 8 1 1 0 8 1
mcl12k 12288 210 0 210 7 6 1 1 0 8 1
mcl9k 9216 152 0 152 9 8 1 1 0 8 1
mcl8k 8192 474 0 474 4 3 1 1 0 8 1
mcl4k 4096 456 0 456 4 3 1 1 0 8 1
mcl2k2 2112 32 0 32 6 5 1 1 0 8 1
mcl2k 2048 76094 0 76037 39 29 10 30 0 8 1
mtagpl 96 302 0 196 6 2 4 5 0 8 0
mbufpl 256 171162 0 170952 216 195 21 81 0 8 0
bufpl 288 10961 0 4564 458 0 458 458 0 8 0
anonpl 24 646682 0 632600 112 18 94 97 0 188 0
amapchunkpl 152 182045 0 181127 56 19 37 38 0 158 1
amappl16 200 12980 0 12495 43 17 26 30 0 8 0
amappl15 192 25 0 24 1 0 1 1 0 8 0
amappl14 184 159 0 148 2 1 1 2 0 8 0
amappl13 176 22 0 20 1 0 1 1 0 8 0
amappl12 168 7193 0 7162 2 0 2 2 0 8 0
amappl11 160 57 0 47 1 0 1 1 0 8 0
amappl10 152 36 0 26 1 0 1 1 0 8 0
amappl9 144 164 0 163 2 1 1 1 0 8 0
amappl8 136 338 0 250 4 0 4 4 0 8 0
amappl7 128 199 0 179 2 0 2 2 0 8 0
amappl6 120 305 0 297 1 0 1 1 0 8 0
amappl5 112 212 0 204 1 0 1 1 0 8 0
amappl4 104 461 0 437 2 1 1 2 0 8 0
amappl3 96 36664 0 36573 3 0 3 3 0 8 0
amappl2 88 7067 0 6994 3 1 2 3 0 8 0
amappl1 80 30880 0 30366 21 10 11 21 0 8 0
amappl 88 57044 0 56811 6 0 6 6 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 72 131 0 1 3 0 3 3 0 8 0
uaddrrnd 24 6522 0 6486 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 6522 0 6486 1 0 1 1 0 8 0
vmmpekpl 168 44405 0 44353 3 0 3 3 0 8 0
vmmpepl 168 379481 0 377099 155 48 107 115 0 357 3
vmsppl 368 6521 0 6486 4 0 4 4 0 8 0
rwobjpl 24 94567 0 86979 46 0 46 46 0 8 0
pdppl 4096 13050 0 12980 223 151 72 73 0 8 2
pvpl 32 1733931 0 1714595 342 174 168 285 0 265 0
pmappl 216 6521 0 6486 3 0 3 3 0 8 1
extentpl 40 56 0 38 1 0 1 1 0 8 0
phpool 112 1245 0 439 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(ffffffff827875bd) at panic+0x165 sys/kern/subr_prf.c:198
__assert(ffffffff82801481,ffffffff827b0ace,90,ffffffff8275fad6) at __assert+0x29 sys/kern/subr_prf.c:157
uvm_pagealloc_pg(fffffd8006a78700,fffffd806b3cc018,3e698bf000,0) at uvm_pagealloc_pg+0x427 uvm_pageinsert sys/uvm/uvm_page.c:138 [inline]
uvm_pagealloc_pg(fffffd8006a78700,fffffd806b3cc018,3e698bf000,0) at uvm_pagealloc_pg+0x427 sys/uvm/uvm_page.c:709
uvm_pagealloc(fffffd806b3cc018,3e698bf000,0,3) at uvm_pagealloc+0x1ec sys/uvm/uvm_page.c:917
pmap_get_ptp(fffffd806b3cc008,7cd317fe7000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1209
pmap_enter(fffffd806b3cc008,7cd317fe7000,6804a000,1,20) at pmap_enter+0x29d sys/arch/amd64/amd64/pmap.c:2716
uvm_fault_upper_lookup(ffff80002ba0c480,ffff80002ba0c4b8,ffff80002ba0c380,ffff80002ba0c400) at uvm_fault_upper_lookup+0x2a1 sys/uvm/uvm_fault.c:895
uvm_fault(fffffd806cb64a28,7cd317fe8000,0,1) at uvm_fault+0x109 sys/uvm/uvm_fault.c:605
upageflttrap(ffff80002ba0c600,7cd317fe8a20) at upageflttrap+0x80 sys/arch/amd64/amd64/trap.c:188
usertrap(ffff80002ba0c600) at usertrap+0x20d sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7cd317fe8a50, count: -12
ddb> machine ddbcpu 1
No such command
ddb> trace
db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff827875bd) at panic+0x165 sys/kern/subr_prf.c:198
__assert(ffffffff82801481,ffffffff827b0ace,90,ffffffff8275fad6) at __assert+0x29 sys/kern/subr_prf.c:157
uvm_pagealloc_pg(fffffd8006a78700,fffffd806b3cc018,3e698bf000,0) at uvm_pagealloc_pg+0x427 uvm_pageinsert sys/uvm/uvm_page.c:138 [inline]
uvm_pagealloc_pg(fffffd8006a78700,fffffd806b3cc018,3e698bf000,0) at uvm_pagealloc_pg+0x427 sys/uvm/uvm_page.c:709
uvm_pagealloc(fffffd806b3cc018,3e698bf000,0,3) at uvm_pagealloc+0x1ec sys/uvm/uvm_page.c:917
pmap_get_ptp(fffffd806b3cc008,7cd317fe7000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1209
pmap_enter(fffffd806b3cc008,7cd317fe7000,6804a000,1,20) at pmap_enter+0x29d sys/arch/amd64/amd64/pmap.c:2716
uvm_fault_upper_lookup(ffff80002ba0c480,ffff80002ba0c4b8,ffff80002ba0c380,ffff80002ba0c400) at uvm_fault_upper_lookup+0x2a1 sys/uvm/uvm_fault.c:895
uvm_fault(fffffd806cb64a28,7cd317fe8000,0,1) at uvm_fault+0x109 sys/uvm/uvm_fault.c:605
upageflttrap(ffff80002ba0c600,7cd317fe8a20) at upageflttrap+0x80 sys/arch/amd64/amd64/trap.c:188
usertrap(ffff80002ba0c600) at usertrap+0x20d sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7cd317fe8a50, count: -12
---
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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: 8eb093d04bc2 Forgot to fix the RFC number in the new comment
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=1737a35b680000
kernel config: https://syzkaller.appspot.com/x/.config?x=1bc15e68cd2a49e5
dashboard link: https://syzkaller.appspot.com/bug?extid=2eb1db0751db0749a856
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/8351871ef13a/disk-8eb093d0.raw.xz
bsd.gdb: https://storage.googleapis.com/syzbot-assets/37ecc80f88d6/bsd-8eb093d0.gdb.xz
kernel image: https://storage.googleapis.com/syzbot-assets/118b9612889a/kernel-8eb093d0.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+2eb1db...@syzkaller.appspotmail.com
panic: kernel diagnostic assertion "dupe == NULL" failed: file "/syzkaller/managers/main/kernel/sys/uvm/uvm_page.c", line 144
Stopped at db_enter+0x1c: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
* 80468 41518 0 0 0 0 syz-executor.1
db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff827875bd) at panic+0x165 sys/kern/subr_prf.c:198
__assert(ffffffff82801481,ffffffff827b0ace,90,ffffffff8275fad6) at __assert+0x29 sys/kern/subr_prf.c:157
uvm_pagealloc_pg(fffffd8006a78700,fffffd806b3cc018,3e698bf000,0) at uvm_pagealloc_pg+0x427 uvm_pageinsert sys/uvm/uvm_page.c:138 [inline]
uvm_pagealloc_pg(fffffd8006a78700,fffffd806b3cc018,3e698bf000,0) at uvm_pagealloc_pg+0x427 sys/uvm/uvm_page.c:709
uvm_pagealloc(fffffd806b3cc018,3e698bf000,0,3) at uvm_pagealloc+0x1ec sys/uvm/uvm_page.c:917
pmap_get_ptp(fffffd806b3cc008,7cd317fe7000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1209
pmap_enter(fffffd806b3cc008,7cd317fe7000,6804a000,1,20) at pmap_enter+0x29d sys/arch/amd64/amd64/pmap.c:2716
uvm_fault_upper_lookup(ffff80002ba0c480,ffff80002ba0c4b8,ffff80002ba0c380,ffff80002ba0c400) at uvm_fault_upper_lookup+0x2a1 sys/uvm/uvm_fault.c:895
uvm_fault(fffffd806cb64a28,7cd317fe8000,0,1) at uvm_fault+0x109 sys/uvm/uvm_fault.c:605
upageflttrap(ffff80002ba0c600,7cd317fe8a20) at upageflttrap+0x80 sys/arch/amd64/amd64/trap.c:188
usertrap(ffff80002ba0c600) at usertrap+0x20d sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7cd317fe8a50, count: 3
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 "dupe == NULL" failed: file "/syzkaller/managers/main/kernel/sys/uvm/uvm_page.c", line 144
ddb> trace
db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff827875bd) at panic+0x165 sys/kern/subr_prf.c:198
__assert(ffffffff82801481,ffffffff827b0ace,90,ffffffff8275fad6) at __assert+0x29 sys/kern/subr_prf.c:157
uvm_pagealloc_pg(fffffd8006a78700,fffffd806b3cc018,3e698bf000,0) at uvm_pagealloc_pg+0x427 uvm_pageinsert sys/uvm/uvm_page.c:138 [inline]
uvm_pagealloc_pg(fffffd8006a78700,fffffd806b3cc018,3e698bf000,0) at uvm_pagealloc_pg+0x427 sys/uvm/uvm_page.c:709
uvm_pagealloc(fffffd806b3cc018,3e698bf000,0,3) at uvm_pagealloc+0x1ec sys/uvm/uvm_page.c:917
pmap_get_ptp(fffffd806b3cc008,7cd317fe7000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1209
pmap_enter(fffffd806b3cc008,7cd317fe7000,6804a000,1,20) at pmap_enter+0x29d sys/arch/amd64/amd64/pmap.c:2716
uvm_fault_upper_lookup(ffff80002ba0c480,ffff80002ba0c4b8,ffff80002ba0c380,ffff80002ba0c400) at uvm_fault_upper_lookup+0x2a1 sys/uvm/uvm_fault.c:895
uvm_fault(fffffd806cb64a28,7cd317fe8000,0,1) at uvm_fault+0x109 sys/uvm/uvm_fault.c:605
upageflttrap(ffff80002ba0c600,7cd317fe8a20) at upageflttrap+0x80 sys/arch/amd64/amd64/trap.c:188
usertrap(ffff80002ba0c600) at usertrap+0x20d sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7cd317fe8a50, count: -12
ddb> show registers
rdi 0
rsi 0x1
rbp 0xffff80002ba0bf90
rbx 0
rdx 0
rcx 0
rax 0xffff8000299d0aa0
r8 0x101010101010101
r9 0x8080808080808080
r10 0x680335a9788762f7
r11 0x223382c6ba0a995d
r12 0
r13 0x3e698bf000
r14 0
r15 0x1
rip 0xffffffff824aca5c db_enter+0x1c
cs 0x8
rflags 0x246
rsp 0xffff80002ba0bf80
ss 0
db_enter+0x1c: addq $0x8,%rsp
ddb> show proc
PROC (syz-executor.1) tid=80468 pid=41518 tcnt=2 stat=onproc
flags process=0 proc=0
runpri=81, usrpri=81, slppri=16, nice=20
wchan=0x0, wmesg=, ps_single=0x0
forw=0xffffffffffffffff, list=0xffff8000299cf560,0xffff8000299cf818
process=0xffff8000ffff0bd0 user=0xffff80002ba07000, vmspace=0xfffffd806cb64a28
estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
76250 239338 55012 0 2 0 syz-executor.2
76250 60534 55012 0 3 0x4000080 fsleep syz-executor.2
25342 11083 53677 0 2 0 syz-executor.0
25342 173496 53677 0 3 0x4000080 fsleep syz-executor.0
23326 211534 71742 0 2 0 syz-executor.4
23326 433664 71742 0 3 0x4000080 fsleep syz-executor.4
23326 6095 71742 0 3 0x4000080 fsleep syz-executor.4
52999 63057 14578 0 2 0 syz-executor.6
52999 219791 14578 0 2 0x4000000 syz-executor.6
374 120462 12348 0 2 0 syz-executor.7
374 368360 12348 0 3 0x4000080 fsleep syz-executor.7
21691 33913 54114 0 2 0 syz-executor.5
21691 44706 54114 0 3 0x4000080 fsleep syz-executor.5
*41518 80468 95986 0 7 0 syz-executor.1
41518 31948 95986 0 3 0x4000080 fsleep syz-executor.1
12348 397590 56437 0 3 0x82 nanoslp syz-executor.7
55012 227384 56437 0 3 0x82 nanoslp syz-executor.2
3466 58588 56437 0 2 0x2 syz-executor.3
91399 510825 0 0 3 0x14200 bored sosplice
83120 186376 0 0 3 0x14280 nfsidl nfsio
45495 72033 0 0 3 0x14280 nfsidl nfsio
81716 275515 0 0 3 0x14280 nfsidl nfsio
9402 103262 0 0 3 0x14280 nfsidl nfsio
35671 61017 0 0 3 0x14280 nfsidl nfsio
49780 319249 0 0 3 0x14280 nfsidl nfsio
4539 342193 0 0 3 0x14280 nfsidl nfsio
39661 414651 0 0 3 0x14280 nfsidl nfsio
85822 234816 0 0 3 0x14280 nfsidl nfsio
7824 214863 0 0 3 0x14280 nfsidl nfsio
50003 35656 0 0 3 0x14280 nfsidl nfsio
74551 445076 0 0 3 0x14280 nfsidl nfsio
69656 233894 0 0 3 0x14280 nfsidl nfsio
53120 465879 0 0 3 0x14280 nfsidl nfsio
69801 150404 0 0 3 0x14280 nfsidl nfsio
14763 512865 0 0 3 0x14280 nfsidl nfsio
49820 225949 0 0 3 0x14280 nfsidl nfsio
54877 126620 0 0 3 0x14280 nfsidl nfsio
48959 215791 0 0 3 0x14280 nfsidl nfsio
88340 237052 0 0 3 0x14280 nfsidl nfsio
35557 195177 0 0 3 0x14200 acct acct
14578 299801 56437 0 3 0x82 nanoslp syz-executor.6
71742 3106 56437 0 3 0x82 nanoslp syz-executor.4
54114 107599 56437 0 3 0x82 nanoslp syz-executor.5
53677 48010 56437 0 3 0x82 nanoslp syz-executor.0
95986 420654 56437 0 3 0x82 nanoslp syz-executor.1
56437 199662 92721 0 3 0x2000082 thrsleep syz-fuzzer
56437 444419 92721 0 3 0x6000082 thrsleep syz-fuzzer
56437 454660 92721 0 3 0x6000082 thrsleep syz-fuzzer
56437 502001 92721 0 3 0x6000082 wait syz-fuzzer
56437 494021 92721 0 3 0x6000082 wait syz-fuzzer
56437 448675 92721 0 3 0x6000082 wait syz-fuzzer
56437 132156 92721 0 3 0x6000082 wait syz-fuzzer
56437 26781 92721 0 3 0x6000082 wait syz-fuzzer
56437 265176 92721 0 3 0x6000082 wait syz-fuzzer
56437 203573 92721 0 3 0x6000082 thrsleep syz-fuzzer
56437 73208 92721 0 3 0x6000082 thrsleep syz-fuzzer
56437 158131 92721 0 3 0x6000082 wait syz-fuzzer
56437 488718 92721 0 3 0x6000082 wait syz-fuzzer
56437 137326 92721 0 3 0x6000082 kqread syz-fuzzer
92721 44877 21272 0 3 0x10008a sigsusp ksh
21272 238691 90209 0 3 0x9a kqread sshd
78187 222573 1 0 3 0x100083 ttyopn getty
90209 368929 1 0 3 0x88 kqread sshd
97578 323432 50717 73 3 0x1100090 kqread syslogd
50717 190509 1 0 3 0x100082 netio syslogd
94174 173179 1 0 3 0x100080 kqread resolvd
58651 286741 42020 77 3 0x100092 kqread dhcpleased
78637 474482 42020 77 3 0x100092 kqread dhcpleased
42020 263744 1 0 3 0x80 kqread dhcpleased
77638 139218 0 0 3 0x14200 bored smr
75849 93240 0 0 2 0x14200 zerothread
22511 234713 0 0 3 0x14200 aiodoned aiodoned
75786 154276 0 0 3 0x14200 syncer update
29769 1604 0 0 3 0x14200 cleaner cleaner
96491 94661 0 0 3 0x14200 reaper reaper
52098 37068 0 0 3 0x14200 pgdaemon pagedaemon
61089 142721 0 0 3 0x14200 bored viomb
39594 58376 0 0 3 0x40014200 acpi0 acpi0
37666 19834 0 0 3 0x14200 bored softnet3
51626 379077 0 0 3 0x14200 bored softnet2
4414 22379 0 0 3 0x14200 bored softnet1
36671 478696 0 0 3 0x14200 bored softnet0
51723 430112 0 0 3 0x14200 bored systqmp
944 24487 0 0 3 0x14200 bored systq
55509 522695 0 0 3 0x40014200 tmoslp softclock
17212 221808 0 0 3 0x40014200 idle0
1 197922 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 10182 6467K 7046K 78643K 15195 0
pcb 13 10K 12K 78643K 252 0
rtable 237 7K 7K 78643K 502 0
pf 32 9K 9K 78643K 70 0
ifaddr 44 11K 11K 78643K 76 0
ifgroup 55 2K 2K 78643K 121 0
sysctl 3 0K 1K 78643K 7 0
counters 29 17K 17K 78643K 45 0
ioctlops 0 0K 2K 78643K 2071 0
iov 0 0K 16K 78643K 329 0
mount 1 1K 1K 78643K 1 0
log 0 0K 0K 78643K 4 0
vnodes 1373 86K 86K 78643K 2466 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 5K 78643K 32 0
VM map 2 1K 1K 78643K 2 0
sem 12 1K 1K 78643K 103 0
dirhash 12 2K 2K 78643K 15 0
ACPI 1697 195K 286K 78643K 12548 0
file desc 17 61K 65K 78643K 6239 0
sigio 0 0K 0K 78643K 31 0
proc 58 59K 75K 78643K 672 0
subproc 104 6K 6K 78643K 156 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 239 0
in_multi 99 7K 7K 78643K 192 0
ether_multi 1 0K 0K 78643K 8 0
mrt 1 0K 0K 78643K 3 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 79 360K 360K 78643K 79 0
exec 0 0K 1K 78643K 764 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 380 142K 144K 78643K 57657 0
UVM aobj 131 4K 4K 78643K 132 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 63 0
NDP 12 0K 2K 78643K 52 0
temp 74 5912K 5977K 78643K 40122 0
kqueue 12 18K 24K 78643K 159 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 75 0 72 1 0 1 1 0 8 0
rtentry 112 156 0 46 4 0 4 4 0 8 0
unpcb 144 2358 0 2345 24 23 1 6 0 8 0
syncache 304 30 0 30 4 4 0 1 0 8 0
sackhl 24 1 0 1 1 1 0 1 0 8 0
tcpqe 32 252 0 252 4 4 0 1 0 8 0
tcpcb 808 418 0 406 14 12 2 9 0 8 0
arp 88 26 0 8 1 0 1 1 0 8 0
ipq 40 51 0 41 1 0 1 1 0 8 0
ipqe 40 2045 0 2033 1 0 1 1 0 8 0
inpcb 336 1320 0 1303 29 22 7 9 0 8 5
nd6 104 37 0 13 1 0 1 1 0 8 0
pkpcb 40 1 0 1 1 1 0 1 0 8 0
kcovpl 48 12 0 4 1 0 1 1 0 8 0
ppxss 1160 2 0 2 2 2 0 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 641 0 186 29 0 29 29 0 8 0
art_table 32 642 0 186 4 0 4 4 0 8 0
art_node 16 155 0 55 1 0 1 1 0 8 0
sysvmsgpl 40 21 0 16 1 0 1 1 0 8 0
semupl 112 1 0 1 1 1 0 1 0 8 0
semapl 112 92 0 82 1 0 1 1 0 8 0
shmpl 112 129 0 1 4 0 4 4 0 8 0
dirhash 1024 19 0 2 3 0 3 3 0 8 0
dino2pl 256 8171 0 6725 91 0 91 91 0 8 0
ffsino 240 8171 0 6725 86 0 86 86 0 8 0
nchpl 144 15431 0 13789 63 0 63 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 40635 0 40635 3 2 1 2 0 8 1
vcpupl 2048 9 0 1 2 0 2 2 0 8 0
vmpool 664 9 0 1 1 0 1 1 0 8 0
kstatmem 264 56 0 32 2 0 2 2 0 8 0
scxspl 216 44949 0 44949 12 11 1 8 1 8 1
plimitpl 152 177 0 162 1 0 1 1 0 8 0
sigapl 424 6551 0 6485 8 0 8 8 0 8 0
futexpl 64 34280 0 34273 1 0 1 1 0 8 0
knotepl 120 52675 0 52595 10 7 3 10 0 8 0
kqueuepl 184 382 0 374 8 7 1 4 0 8 0
pipepl 288 984 0 956 11 6 5 7 0 8 2
fdescpl 432 6513 0 6485 4 0 4 4 0 8 0
filepl 120 20864 0 20625 30 20 10 14 0 8 2
lockfpl 104 979 0 976 1 0 1 1 0 8 0
lockfspl 48 461 0 458 1 0 1 1 0 8 0
sessionpl 144 27 0 11 1 0 1 1 0 8 0
pgrppl 48 405 0 389 1 0 1 1 0 8 0
ucredpl 104 2178 0 2168 1 0 1 1 0 8 0
zombiepl 144 6485 0 6485 1 0 1 1 0 8 1
processpl 1008 6551 0 6485 10 1 9 9 0 8 0
procpl 680 14675 0 14588 10 1 9 9 0 8 1
sosppl 168 39 0 39 2 2 0 1 0 8 0
sockpl 456 3755 0 3722 117 104 13 32 0 8 8
mcl64k 65536 148 0 148 6 5 1 1 0 8 1
mcl16k 16384 58 0 58 9 8 1 1 0 8 1
mcl12k 12288 210 0 210 7 6 1 1 0 8 1
mcl9k 9216 152 0 152 9 8 1 1 0 8 1
mcl8k 8192 474 0 474 4 3 1 1 0 8 1
mcl4k 4096 456 0 456 4 3 1 1 0 8 1
mcl2k2 2112 32 0 32 6 5 1 1 0 8 1
mcl2k 2048 76094 0 76037 39 29 10 30 0 8 1
mtagpl 96 302 0 196 6 2 4 5 0 8 0
mbufpl 256 171162 0 170952 216 195 21 81 0 8 0
bufpl 288 10961 0 4564 458 0 458 458 0 8 0
anonpl 24 646682 0 632600 112 18 94 97 0 188 0
amapchunkpl 152 182045 0 181127 56 19 37 38 0 158 1
amappl16 200 12980 0 12495 43 17 26 30 0 8 0
amappl15 192 25 0 24 1 0 1 1 0 8 0
amappl14 184 159 0 148 2 1 1 2 0 8 0
amappl13 176 22 0 20 1 0 1 1 0 8 0
amappl12 168 7193 0 7162 2 0 2 2 0 8 0
amappl11 160 57 0 47 1 0 1 1 0 8 0
amappl10 152 36 0 26 1 0 1 1 0 8 0
amappl9 144 164 0 163 2 1 1 1 0 8 0
amappl8 136 338 0 250 4 0 4 4 0 8 0
amappl7 128 199 0 179 2 0 2 2 0 8 0
amappl6 120 305 0 297 1 0 1 1 0 8 0
amappl5 112 212 0 204 1 0 1 1 0 8 0
amappl4 104 461 0 437 2 1 1 2 0 8 0
amappl3 96 36664 0 36573 3 0 3 3 0 8 0
amappl2 88 7067 0 6994 3 1 2 3 0 8 0
amappl1 80 30880 0 30366 21 10 11 21 0 8 0
amappl 88 57044 0 56811 6 0 6 6 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 72 131 0 1 3 0 3 3 0 8 0
uaddrrnd 24 6522 0 6486 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 6522 0 6486 1 0 1 1 0 8 0
vmmpekpl 168 44405 0 44353 3 0 3 3 0 8 0
vmmpepl 168 379481 0 377099 155 48 107 115 0 357 3
vmsppl 368 6521 0 6486 4 0 4 4 0 8 0
rwobjpl 24 94567 0 86979 46 0 46 46 0 8 0
pdppl 4096 13050 0 12980 223 151 72 73 0 8 2
pvpl 32 1733931 0 1714595 342 174 168 285 0 265 0
pmappl 216 6521 0 6486 3 0 3 3 0 8 1
extentpl 40 56 0 38 1 0 1 1 0 8 0
phpool 112 1245 0 439 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(ffffffff827875bd) at panic+0x165 sys/kern/subr_prf.c:198
__assert(ffffffff82801481,ffffffff827b0ace,90,ffffffff8275fad6) at __assert+0x29 sys/kern/subr_prf.c:157
uvm_pagealloc_pg(fffffd8006a78700,fffffd806b3cc018,3e698bf000,0) at uvm_pagealloc_pg+0x427 uvm_pageinsert sys/uvm/uvm_page.c:138 [inline]
uvm_pagealloc_pg(fffffd8006a78700,fffffd806b3cc018,3e698bf000,0) at uvm_pagealloc_pg+0x427 sys/uvm/uvm_page.c:709
uvm_pagealloc(fffffd806b3cc018,3e698bf000,0,3) at uvm_pagealloc+0x1ec sys/uvm/uvm_page.c:917
pmap_get_ptp(fffffd806b3cc008,7cd317fe7000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1209
pmap_enter(fffffd806b3cc008,7cd317fe7000,6804a000,1,20) at pmap_enter+0x29d sys/arch/amd64/amd64/pmap.c:2716
uvm_fault_upper_lookup(ffff80002ba0c480,ffff80002ba0c4b8,ffff80002ba0c380,ffff80002ba0c400) at uvm_fault_upper_lookup+0x2a1 sys/uvm/uvm_fault.c:895
uvm_fault(fffffd806cb64a28,7cd317fe8000,0,1) at uvm_fault+0x109 sys/uvm/uvm_fault.c:605
upageflttrap(ffff80002ba0c600,7cd317fe8a20) at upageflttrap+0x80 sys/arch/amd64/amd64/trap.c:188
usertrap(ffff80002ba0c600) at usertrap+0x20d sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7cd317fe8a50, count: -12
ddb> machine ddbcpu 1
No such command
ddb> trace
db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff827875bd) at panic+0x165 sys/kern/subr_prf.c:198
__assert(ffffffff82801481,ffffffff827b0ace,90,ffffffff8275fad6) at __assert+0x29 sys/kern/subr_prf.c:157
uvm_pagealloc_pg(fffffd8006a78700,fffffd806b3cc018,3e698bf000,0) at uvm_pagealloc_pg+0x427 uvm_pageinsert sys/uvm/uvm_page.c:138 [inline]
uvm_pagealloc_pg(fffffd8006a78700,fffffd806b3cc018,3e698bf000,0) at uvm_pagealloc_pg+0x427 sys/uvm/uvm_page.c:709
uvm_pagealloc(fffffd806b3cc018,3e698bf000,0,3) at uvm_pagealloc+0x1ec sys/uvm/uvm_page.c:917
pmap_get_ptp(fffffd806b3cc008,7cd317fe7000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1209
pmap_enter(fffffd806b3cc008,7cd317fe7000,6804a000,1,20) at pmap_enter+0x29d sys/arch/amd64/amd64/pmap.c:2716
uvm_fault_upper_lookup(ffff80002ba0c480,ffff80002ba0c4b8,ffff80002ba0c380,ffff80002ba0c400) at uvm_fault_upper_lookup+0x2a1 sys/uvm/uvm_fault.c:895
uvm_fault(fffffd806cb64a28,7cd317fe8000,0,1) at uvm_fault+0x109 sys/uvm/uvm_fault.c:605
upageflttrap(ffff80002ba0c600,7cd317fe8a20) at upageflttrap+0x80 sys/arch/amd64/amd64/trap.c:188
usertrap(ffff80002ba0c600) at usertrap+0x20d sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7cd317fe8a50, count: -12
---
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#syz fix: exact-commit-title
If you want to overwrite report's subsystems, reply with:
#syz set subsystems: new-subsystem
(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
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