assert "pmap->pm_type != PMAP_TYPE_EPT" failed in pmap.c (2)
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syzbot
Dec 9, 2023, 10:03:32 PM12/9/23
to syzkaller-o...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 102443c78d43 Following a failed fetch, use a previously ca..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=157888b6e80000
kernel config: https://syzkaller.appspot.com/x/.config?x=7058272de1526588
dashboard link: https://syzkaller.appspot.com/bug?extid=fcc8a48ab31dae37924a
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/a2e81957497a/disk-102443c7.raw.xz
bsd.gdb: https://storage.googleapis.com/syzbot-assets/22522aaa3e5f/bsd-102443c7.gdb.xz
kernel image: https://storage.googleapis.com/syzbot-assets/d0156ad65067/kernel-102443c7.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+fcc8a4...@syzkaller.appspotmail.com
�e��#�`e@�Cڀ0|6�opanic: kernel diagnostic assertion "pmap->pm_type != PMAP_TYPE_EPT" failed: file "/syzkaller/managers/multicore/kernel/sys/arch/amd64/amd64/pmap.c", line 412
Stopped at db_enter+0x1c: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
150725 38284 0 0x2 0 1 syz-executor.4
*414107 89723 0 0x14000 0x200 0 reaper
db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff827b03e4) at panic+0x17b sys/kern/subr_prf.c:198
__assert(ffffffff8282b893,ffffffff827cea59,19c,ffffffff8283071f) at __assert+0x29 sys/kern/subr_prf.c:157
pmap_page_remove(fffffd80075e0740) at pmap_page_remove+0x5a4 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:426 [inline]
pmap_page_remove(fffffd80075e0740) at pmap_page_remove+0x5a4 sys/arch/amd64/amd64/pmap.c:1944
uvm_anfree_list(fffffd80691df360,ffff8000211af788) at uvm_anfree_list+0x98
amap_wipeout(fffffd80666cc7f0) at amap_wipeout+0x1c1 sys/uvm/uvm_amap.c:504
uvm_unmap_detach(ffff8000211af850,1) at uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1366
uvm_map_teardown(fffffd806e3a41e0) at uvm_map_teardown+0x2f5 sys/uvm/uvm_map.c:2585
uvmspace_free(fffffd806e3a41e0) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3503
reaper(ffff8000211a32a0) at reaper+0x19a sys/kern/kern_exit.c:458
end trace frame: 0x0, count: 5
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{0}>
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
*cpu0: kernel diagnostic assertion "pmap->pm_type != PMAP_TYPE_EPT" failed: file "/syzkaller/managers/multicore/kernel/sys/arch/amd64/amd64/pmap.c", line 412
ddb{0}> trace
db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff827b03e4) at panic+0x17b sys/kern/subr_prf.c:198
__assert(ffffffff8282b893,ffffffff827cea59,19c,ffffffff8283071f) at __assert+0x29 sys/kern/subr_prf.c:157
pmap_page_remove(fffffd80075e0740) at pmap_page_remove+0x5a4 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:426 [inline]
pmap_page_remove(fffffd80075e0740) at pmap_page_remove+0x5a4 sys/arch/amd64/amd64/pmap.c:1944
uvm_anfree_list(fffffd80691df360,ffff8000211af788) at uvm_anfree_list+0x98
amap_wipeout(fffffd80666cc7f0) at amap_wipeout+0x1c1 sys/uvm/uvm_amap.c:504
uvm_unmap_detach(ffff8000211af850,1) at uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1366
uvm_map_teardown(fffffd806e3a41e0) at uvm_map_teardown+0x2f5 sys/uvm/uvm_map.c:2585
uvmspace_free(fffffd806e3a41e0) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3503
reaper(ffff8000211a32a0) at reaper+0x19a sys/kern/kern_exit.c:458
end trace frame: 0x0, count: -10
ddb{0}> show registers
rdi 0
rsi 0x1
rbp 0xffff8000211af5d0
rbx 0xffffffff82bd5ba7 cpu_info_full_primary+0x2ba7
rdx 0
rcx 0xffff8000211a32a0
rax 0xffffffff82bd4ff0 cpu_info_full_primary+0x1ff0
r8 0
r9 0x8080808080808080
r10 0x36ce3d0b90da5e76
r11 0xf2c6e1f0bf15b5ee
r12 0xffffffff82bd59a8 cpu_info_full_primary+0x29a8
r13 0
r14 0
r15 0x1
rip 0xffffffff8255b0cc db_enter+0x1c
cs 0x8
rflags 0x246
rsp 0xffff8000211af5c0
ss 0
db_enter+0x1c: addq $0x8,%rsp
ddb{0}> show proc
PROC (reaper) tid=414107 pid=89723 tcnt=1 stat=onproc
flags process=14000<NOZOMBIE,SYSTEM> proc=200<SYSTEM>
runpri=4, usrpri=57, slppri=4, nice=20
wchan=0x0, wmesg=, ps_single=0x0
forw=0xffffffffffffffff, list=0xffff8000211a37f0,0xffff8000211a2ab8
process=0xffff8000fffff240 user=0xffff8000211aa000, vmspace=0xffffffff82c9b3b8
estcpu=7, cpticks=13, pctcpu=1.2, user=0, sys=1, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
44125 156828 38284 0 2 0 syz-executor.4
78719 345811 9149 0 2 0 syz-executor.2
78719 405067 9149 0 2 0x4000000 syz-executor.2
18410 51383 96619 0 2 0 syz-executor.1
18410 266990 96619 0 2 0x4000000 syz-executor.1
97591 64126 64533 0 2 0x2 syz-executor.5
70385 353904 64533 0 2 0x2 syz-executor.6
9149 368077 64533 0 2 0x482 syz-executor.2
96619 381996 64533 0 2 0x482 syz-executor.1
20950 15531 0 0 3 0x14200 acct acct
94750 362295 1 0 3 0x100083 ttyin getty
47240 342515 64533 0 2 0x2 syz-executor.0
68373 245048 0 0 3 0x14200 bored sosplice
38284 150725 64533 0 7 0x2 syz-executor.4
98500 66933 64533 0 2 0x2 syz-executor.3
64533 358903 19403 0 3 0x2000082 thrsleep syz-fuzzer
64533 505679 19403 0 2 0x6000482 syz-fuzzer
64533 94905 19403 0 3 0x6000082 wait syz-fuzzer
64533 469505 19403 0 3 0x6000082 wait syz-fuzzer
64533 475573 19403 0 3 0x6000082 wait syz-fuzzer
64533 399771 19403 0 3 0x6000082 wait syz-fuzzer
64533 517488 19403 0 3 0x6000082 thrsleep syz-fuzzer
64533 8658 19403 0 2 0x6000002 syz-fuzzer
64533 514342 19403 0 3 0x6000082 thrsleep syz-fuzzer
64533 269262 19403 0 3 0x6000082 wait syz-fuzzer
64533 435735 19403 0 3 0x6000082 thrsleep syz-fuzzer
64533 214033 19403 0 2 0x6000002 syz-fuzzer
64533 18041 19403 0 3 0x6000082 thrsleep syz-fuzzer
64533 150280 19403 0 3 0x6000082 wait syz-fuzzer
64533 33759 19403 0 3 0x6000082 wait syz-fuzzer
64533 416617 19403 0 3 0x6000082 wait syz-fuzzer
19403 175477 39428 0 3 0x10008a sigsusp ksh
39428 86721 90252 0 3 0x9a kqread sshd
90252 164305 1 0 3 0x88 kqread sshd
25258 78352 63158 74 3 0x1100092 bpf pflogd
63158 150187 1 0 3 0x80 netio pflogd
62400 358659 23145 73 3 0x1100090 kqread syslogd
23145 9088 1 0 3 0x100082 netio syslogd
23979 78252 1 0 3 0x100080 kqread resolvd
7024 278970 64068 77 3 0x100092 kqread dhcpleased
59712 136465 64068 77 3 0x100092 kqread dhcpleased
64068 450642 1 0 3 0x80 kqread dhcpleased
11401 294578 0 0 3 0x14200 bored smr
28955 480002 0 0 2 0x14200 zerothread
5775 266389 0 0 3 0x14200 aiodoned aiodoned
27914 382493 0 0 3 0x14200 syncer update
45348 315238 0 0 3 0x14200 cleaner cleaner
*89723 414107 0 0 7 0x14200 reaper
60135 53072 0 0 3 0x14200 pgdaemon pagedaemon
77656 506104 0 0 3 0x14200 bored viomb
14208 334035 0 0 3 0x40014200 acpi0 acpi0
83453 441167 0 0 3 0x40014200 idle1
32697 163902 0 0 3 0x14200 bored softnet3
67461 242995 0 0 3 0x14200 bored softnet2
48374 80647 0 0 3 0x14200 bored softnet1
5423 49810 0 0 3 0x14200 bored softnet0
7287 371191 0 0 3 0x14200 bored systqmp
7834 359683 0 0 3 0x14200 bored systq
61258 323667 0 0 3 0x14200 tmoslp softclockmp
96983 385034 0 0 2 0x40014200 softclock
48558 63471 0 0 3 0x40014200 idle0
1 64561 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
Process 89723 (reaper) thread 0xffff8000211a32a0 (414107)
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10227 6488K 7370K 78643K 34572 0
pcb 13 16K 18K 78643K 740 0
rtable 223 6K 7K 78643K 1158 0
pf 33 9K 10K 78643K 186 0
ifaddr 42 15K 17K 78643K 147 0
ifgroup 56 2K 2K 78643K 300 0
sysctl 4 1K 1K 78643K 6 0
counters 60 35K 36K 78643K 194 0
ioctlops 0 0K 4K 78643K 6568 0
iov 0 0K 32K 78643K 990 0
mount 1 1K 1K 78643K 1 0
log 0 0K 0K 78643K 4 0
vnodes 1507 94K 94K 78643K 9018 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 9K 78643K 76 0
VM map 2 1K 1K 78643K 2 0
sem 12 0K 0K 78643K 2393 0
dirhash 12 2K 2K 78643K 42 0
ACPI 1697 195K 286K 78643K 12548 0
file desc 12 41K 89K 78643K 9062 0
sigio 0 0K 0K 78643K 279 0
proc 70 91K 127K 78643K 1213 0
subproc 91 5K 6K 78643K 262 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 575 0
in_multi 88 6K 7K 78643K 309 0
ether_multi 1 0K 0K 78643K 16 0
mrt 2 0K 0K 78643K 10 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 235 1049K 1049K 78643K 235 0
exec 0 0K 1K 78643K 1793 0
pfkey data 0 0K 0K 78643K 39 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 472 387K 411K 78643K 92139 0
UVM aobj 131 4K 4K 78643K 131 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 312 0
NDP 12 0K 1K 78643K 113 0
temp 74 5924K 6052K 78643K 85139 0
kqueue 12 18K 28K 78643K 1042 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 120 790 0 787 15 13 2 5 0 8 1
rtentry 112 302 0 199 4 0 4 4 0 8 0
unpcb 144 9336 0 9321 79 73 6 10 0 8 5
syncache 312 100 0 100 17 16 1 1 0 8 1
tcpqe 32 223 0 223 14 14 0 1 0 8 0
tcpcb 808 2169 0 2153 66 57 9 12 0 8 4
arp 120 39 0 22 1 0 1 1 0 8 0
inpcb 368 6821 0 6798 118 109 9 15 0 8 4
nd6 136 63 0 39 1 0 1 1 0 8 0
pkpcb 40 32 0 32 8 8 0 1 0 8 0
kcovpl 48 17 0 10 1 0 1 1 0 8 0
ppxss 1256 16 0 16 4 4 0 1 0 8 0
pffrag 232 40 0 36 1 0 1 1 0 482 0
pffrnode 88 36 0 32 1 0 1 1 0 8 0
pffrent 40 240 0 236 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
pfstitem 24 270 0 243 1 0 1 1 0 8 0
pfstkey 128 270 0 243 2 0 2 2 0 8 0
pfstate 376 270 0 243 6 2 4 5 0 8 0
pfrule 1344 21 0 16 2 1 1 2 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 915 0 491 30 0 30 30 0 8 0
art_table 32 916 0 491 4 0 4 4 0 8 0
art_node 16 224 0 130 1 0 1 1 0 8 0
sysvmsgpl 40 4 0 4 1 1 0 1 0 8 0
semapl 112 2391 0 2381 1 0 1 1 0 8 0
shmpl 112 128 0 0 4 0 4 4 0 8 0
dirhash 1024 37 0 20 3 0 3 3 0 8 0
dino2pl 256 13784 0 12305 93 0 93 93 0 8 0
ffsino 272 13784 0 12305 99 0 99 99 0 8 0
nchpl 144 25815 0 25269 63 39 24 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 92609 0 92609 14 13 1 2 0 8 1
percpumem 16 110 0 67 1 0 1 1 0 8 0
vcpupl 2048 116 0 3 15 0 15 15 0 8 0
vmpool 696 119 0 6 11 0 11 11 0 8 0
kstatmem 264 158 0 134 2 0 2 2 0 8 0
scxspl 216 75053 0 75053 28 27 1 8 1 8 1
plimitpl 152 992 0 976 1 0 1 1 0 8 0
sigapl 424 9401 0 9354 9 1 8 8 0 8 1
futexpl 64 79492 0 79492 4 3 1 1 0 8 1
knotepl 120 819 0 0 18 0 18 18 0 8 0
kqueuepl 216 3170 0 3162 61 56 5 8 0 8 4
pipepl 320 1916 0 1889 64 56 8 13 0 8 5
fdescpl 496 9357 0 9332 5 1 4 5 0 8 0
filepl 152 66737 0 66516 150 133 17 28 0 8 6
lockfpl 104 5588 0 5586 16 14 2 2 0 8 1
lockfspl 48 2325 0 2323 1 0 1 1 0 8 0
sessionpl 144 35 0 18 1 0 1 1 0 8 0
pgrppl 48 233 0 216 1 0 1 1 0 8 0
ucredpl 104 8808 0 8796 1 0 1 1 0 8 0
zombiepl 144 9356 0 9354 6 5 1 1 0 8 0
processpl 1072 9401 0 9354 5 0 5 5 0 8 0
procpl 680 26108 0 26044 11 2 9 9 0 8 0
sosppl 168 86 0 86 6 6 0 1 0 8 0
sockpl 488 17052 0 17015 333 315 18 38 0 8 8
mcl64k 65536 25 0 0 4 1 3 3 0 8 0
mcl16k 16384 16 0 0 2 0 2 2 0 8 0
mcl12k 12288 25 0 0 2 0 2 2 0 8 0
mcl9k 9216 20 0 0 2 0 2 2 0 8 0
mcl8k 8192 17 0 0 3 0 3 3 0 8 0
mcl4k 4096 49 0 0 4 0 4 4 0 8 0
mcl2k2 2112 11 0 0 1 0 1 1 0 8 0
mcl2k 2048 403 0 0 34 6 28 34 0 8 0
mtagpl 96 826 0 0 18 0 18 18 0 8 0
mbufpl 256 1768 0 0 89 0 89 89 0 8 0
bufpl 288 17707 0 11384 452 0 452 452 0 8 0
anonpl 24 956748 0 942033 187 73 114 118 0 186 3
amapchunkpl 152 292564 0 291752 91 45 46 46 0 158 6
amappl16 200 17837 0 17299 87 51 36 41 0 8 7
amappl15 192 18 0 17 1 0 1 1 0 8 0
amappl14 184 190 0 175 2 1 1 2 0 8 0
amappl13 176 20 0 20 4 4 0 1 0 8 0
amappl12 168 10208 0 10176 4 2 2 3 0 8 0
amappl11 160 58 0 43 1 0 1 1 0 8 0
amappl10 152 34 0 25 1 0 1 1 0 8 0
amappl9 144 292 0 289 1 0 1 1 0 8 0
amappl8 136 609 0 474 5 0 5 5 0 8 0
amappl7 128 241 0 213 2 0 2 2 0 8 0
amappl6 120 495 0 478 1 0 1 1 0 8 0
amappl5 112 285 0 274 1 0 1 1 0 8 0
amappl4 104 676 0 644 2 1 1 2 0 8 0
amappl3 96 56999 0 56934 4 1 3 3 0 8 0
amappl2 88 10283 0 10208 3 1 2 3 0 8 0
amappl1 80 41660 0 41121 23 11 12 23 0 8 0
amappl 88 91207 0 90966 8 0 8 8 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 72 130 0 0 3 0 3 3 0 8 0
uaddrrnd 24 9476 0 9338 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 9476 0 9338 1 0 1 1 0 8 0
vmmpekpl 168 72653 0 72580 4 0 4 4 0 8 0
vmmpepl 168 559700 0 557217 299 172 127 143 0 357 5
vmsppl 464 9475 0 9337 20 2 18 18 0 8 0
rwobjpl 56 143083 0 135337 119 6 113 114 0 8 2
pdppl 4096 18960 0 18787 459 276 183 184 0 8 10
pvpl 32 2585275 0 2565208 519 311 208 328 0 265 21
pmappl 248 9475 0 9337 10 1 9 9 0 8 0
extentpl 40 56 0 38 1 0 1 1 0 8 0
phpool 112 1521 0 486 30 0 30 30 0 8 0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff827b03e4) at panic+0x17b sys/kern/subr_prf.c:198
__assert(ffffffff8282b893,ffffffff827cea59,19c,ffffffff8283071f) at __assert+0x29 sys/kern/subr_prf.c:157
pmap_page_remove(fffffd80075e0740) at pmap_page_remove+0x5a4 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:426 [inline]
pmap_page_remove(fffffd80075e0740) at pmap_page_remove+0x5a4 sys/arch/amd64/amd64/pmap.c:1944
uvm_anfree_list(fffffd80691df360,ffff8000211af788) at uvm_anfree_list+0x98
amap_wipeout(fffffd80666cc7f0) at amap_wipeout+0x1c1 sys/uvm/uvm_amap.c:504
uvm_unmap_detach(ffff8000211af850,1) at uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1366
uvm_map_teardown(fffffd806e3a41e0) at uvm_map_teardown+0x2f5 sys/uvm/uvm_map.c:2585
uvmspace_free(fffffd806e3a41e0) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3503
reaper(ffff8000211a32a0) at reaper+0x19a sys/kern/kern_exit.c:458
end trace frame: 0x0, count: -10
ddb{0}> machine ddbcpu 1
Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp
x86_ipi_db(ffff800020d48ff0) at x86_ipi_db+0x1e 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+0x27
__mp_lock(ffffffff82cd01e0) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82cd01e0) at __mp_lock+0x122 sys/kern/kern_lock.c:147
syscall(ffff800026747830) at syscall+0x5cd mi_syscall sys/sys/syscall_mi.h:110 [inline]
syscall(ffff800026747830) at syscall+0x5cd sys/arch/amd64/amd64/trap.c:623
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x78ba68516f30, count: 9
ddb{1}> trace
x86_ipi_db(ffff800020d48ff0) at x86_ipi_db+0x1e 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+0x27
__mp_lock(ffffffff82cd01e0) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82cd01e0) at __mp_lock+0x122 sys/kern/kern_lock.c:147
syscall(ffff800026747830) at syscall+0x5cd mi_syscall sys/sys/syscall_mi.h:110 [inline]
syscall(ffff800026747830) at syscall+0x5cd sys/arch/amd64/amd64/trap.c:623
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x78ba68516f30, count: -6
---
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syzbot found the following issue on:
HEAD commit: 102443c78d43 Following a failed fetch, use a previously ca..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=157888b6e80000
kernel config: https://syzkaller.appspot.com/x/.config?x=7058272de1526588
dashboard link: https://syzkaller.appspot.com/bug?extid=fcc8a48ab31dae37924a
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/a2e81957497a/disk-102443c7.raw.xz
bsd.gdb: https://storage.googleapis.com/syzbot-assets/22522aaa3e5f/bsd-102443c7.gdb.xz
kernel image: https://storage.googleapis.com/syzbot-assets/d0156ad65067/kernel-102443c7.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+fcc8a4...@syzkaller.appspotmail.com
�e��#�`e@�Cڀ0|6�opanic: kernel diagnostic assertion "pmap->pm_type != PMAP_TYPE_EPT" failed: file "/syzkaller/managers/multicore/kernel/sys/arch/amd64/amd64/pmap.c", line 412
Stopped at db_enter+0x1c: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
150725 38284 0 0x2 0 1 syz-executor.4
*414107 89723 0 0x14000 0x200 0 reaper
db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff827b03e4) at panic+0x17b sys/kern/subr_prf.c:198
__assert(ffffffff8282b893,ffffffff827cea59,19c,ffffffff8283071f) at __assert+0x29 sys/kern/subr_prf.c:157
pmap_page_remove(fffffd80075e0740) at pmap_page_remove+0x5a4 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:426 [inline]
pmap_page_remove(fffffd80075e0740) at pmap_page_remove+0x5a4 sys/arch/amd64/amd64/pmap.c:1944
uvm_anfree_list(fffffd80691df360,ffff8000211af788) at uvm_anfree_list+0x98
amap_wipeout(fffffd80666cc7f0) at amap_wipeout+0x1c1 sys/uvm/uvm_amap.c:504
uvm_unmap_detach(ffff8000211af850,1) at uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1366
uvm_map_teardown(fffffd806e3a41e0) at uvm_map_teardown+0x2f5 sys/uvm/uvm_map.c:2585
uvmspace_free(fffffd806e3a41e0) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3503
reaper(ffff8000211a32a0) at reaper+0x19a sys/kern/kern_exit.c:458
end trace frame: 0x0, count: 5
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{0}>
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
*cpu0: kernel diagnostic assertion "pmap->pm_type != PMAP_TYPE_EPT" failed: file "/syzkaller/managers/multicore/kernel/sys/arch/amd64/amd64/pmap.c", line 412
ddb{0}> trace
db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff827b03e4) at panic+0x17b sys/kern/subr_prf.c:198
__assert(ffffffff8282b893,ffffffff827cea59,19c,ffffffff8283071f) at __assert+0x29 sys/kern/subr_prf.c:157
pmap_page_remove(fffffd80075e0740) at pmap_page_remove+0x5a4 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:426 [inline]
pmap_page_remove(fffffd80075e0740) at pmap_page_remove+0x5a4 sys/arch/amd64/amd64/pmap.c:1944
uvm_anfree_list(fffffd80691df360,ffff8000211af788) at uvm_anfree_list+0x98
amap_wipeout(fffffd80666cc7f0) at amap_wipeout+0x1c1 sys/uvm/uvm_amap.c:504
uvm_unmap_detach(ffff8000211af850,1) at uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1366
uvm_map_teardown(fffffd806e3a41e0) at uvm_map_teardown+0x2f5 sys/uvm/uvm_map.c:2585
uvmspace_free(fffffd806e3a41e0) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3503
reaper(ffff8000211a32a0) at reaper+0x19a sys/kern/kern_exit.c:458
end trace frame: 0x0, count: -10
ddb{0}> show registers
rdi 0
rsi 0x1
rbp 0xffff8000211af5d0
rbx 0xffffffff82bd5ba7 cpu_info_full_primary+0x2ba7
rdx 0
rcx 0xffff8000211a32a0
rax 0xffffffff82bd4ff0 cpu_info_full_primary+0x1ff0
r8 0
r9 0x8080808080808080
r10 0x36ce3d0b90da5e76
r11 0xf2c6e1f0bf15b5ee
r12 0xffffffff82bd59a8 cpu_info_full_primary+0x29a8
r13 0
r14 0
r15 0x1
rip 0xffffffff8255b0cc db_enter+0x1c
cs 0x8
rflags 0x246
rsp 0xffff8000211af5c0
ss 0
db_enter+0x1c: addq $0x8,%rsp
ddb{0}> show proc
PROC (reaper) tid=414107 pid=89723 tcnt=1 stat=onproc
flags process=14000<NOZOMBIE,SYSTEM> proc=200<SYSTEM>
runpri=4, usrpri=57, slppri=4, nice=20
wchan=0x0, wmesg=, ps_single=0x0
forw=0xffffffffffffffff, list=0xffff8000211a37f0,0xffff8000211a2ab8
process=0xffff8000fffff240 user=0xffff8000211aa000, vmspace=0xffffffff82c9b3b8
estcpu=7, cpticks=13, pctcpu=1.2, user=0, sys=1, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
44125 156828 38284 0 2 0 syz-executor.4
78719 345811 9149 0 2 0 syz-executor.2
78719 405067 9149 0 2 0x4000000 syz-executor.2
18410 51383 96619 0 2 0 syz-executor.1
18410 266990 96619 0 2 0x4000000 syz-executor.1
97591 64126 64533 0 2 0x2 syz-executor.5
70385 353904 64533 0 2 0x2 syz-executor.6
9149 368077 64533 0 2 0x482 syz-executor.2
96619 381996 64533 0 2 0x482 syz-executor.1
20950 15531 0 0 3 0x14200 acct acct
94750 362295 1 0 3 0x100083 ttyin getty
47240 342515 64533 0 2 0x2 syz-executor.0
68373 245048 0 0 3 0x14200 bored sosplice
38284 150725 64533 0 7 0x2 syz-executor.4
98500 66933 64533 0 2 0x2 syz-executor.3
64533 358903 19403 0 3 0x2000082 thrsleep syz-fuzzer
64533 505679 19403 0 2 0x6000482 syz-fuzzer
64533 94905 19403 0 3 0x6000082 wait syz-fuzzer
64533 469505 19403 0 3 0x6000082 wait syz-fuzzer
64533 475573 19403 0 3 0x6000082 wait syz-fuzzer
64533 399771 19403 0 3 0x6000082 wait syz-fuzzer
64533 517488 19403 0 3 0x6000082 thrsleep syz-fuzzer
64533 8658 19403 0 2 0x6000002 syz-fuzzer
64533 514342 19403 0 3 0x6000082 thrsleep syz-fuzzer
64533 269262 19403 0 3 0x6000082 wait syz-fuzzer
64533 435735 19403 0 3 0x6000082 thrsleep syz-fuzzer
64533 214033 19403 0 2 0x6000002 syz-fuzzer
64533 18041 19403 0 3 0x6000082 thrsleep syz-fuzzer
64533 150280 19403 0 3 0x6000082 wait syz-fuzzer
64533 33759 19403 0 3 0x6000082 wait syz-fuzzer
64533 416617 19403 0 3 0x6000082 wait syz-fuzzer
19403 175477 39428 0 3 0x10008a sigsusp ksh
39428 86721 90252 0 3 0x9a kqread sshd
90252 164305 1 0 3 0x88 kqread sshd
25258 78352 63158 74 3 0x1100092 bpf pflogd
63158 150187 1 0 3 0x80 netio pflogd
62400 358659 23145 73 3 0x1100090 kqread syslogd
23145 9088 1 0 3 0x100082 netio syslogd
23979 78252 1 0 3 0x100080 kqread resolvd
7024 278970 64068 77 3 0x100092 kqread dhcpleased
59712 136465 64068 77 3 0x100092 kqread dhcpleased
64068 450642 1 0 3 0x80 kqread dhcpleased
11401 294578 0 0 3 0x14200 bored smr
28955 480002 0 0 2 0x14200 zerothread
5775 266389 0 0 3 0x14200 aiodoned aiodoned
27914 382493 0 0 3 0x14200 syncer update
45348 315238 0 0 3 0x14200 cleaner cleaner
*89723 414107 0 0 7 0x14200 reaper
60135 53072 0 0 3 0x14200 pgdaemon pagedaemon
77656 506104 0 0 3 0x14200 bored viomb
14208 334035 0 0 3 0x40014200 acpi0 acpi0
83453 441167 0 0 3 0x40014200 idle1
32697 163902 0 0 3 0x14200 bored softnet3
67461 242995 0 0 3 0x14200 bored softnet2
48374 80647 0 0 3 0x14200 bored softnet1
5423 49810 0 0 3 0x14200 bored softnet0
7287 371191 0 0 3 0x14200 bored systqmp
7834 359683 0 0 3 0x14200 bored systq
61258 323667 0 0 3 0x14200 tmoslp softclockmp
96983 385034 0 0 2 0x40014200 softclock
48558 63471 0 0 3 0x40014200 idle0
1 64561 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
Process 89723 (reaper) thread 0xffff8000211a32a0 (414107)
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10227 6488K 7370K 78643K 34572 0
pcb 13 16K 18K 78643K 740 0
rtable 223 6K 7K 78643K 1158 0
pf 33 9K 10K 78643K 186 0
ifaddr 42 15K 17K 78643K 147 0
ifgroup 56 2K 2K 78643K 300 0
sysctl 4 1K 1K 78643K 6 0
counters 60 35K 36K 78643K 194 0
ioctlops 0 0K 4K 78643K 6568 0
iov 0 0K 32K 78643K 990 0
mount 1 1K 1K 78643K 1 0
log 0 0K 0K 78643K 4 0
vnodes 1507 94K 94K 78643K 9018 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 9K 78643K 76 0
VM map 2 1K 1K 78643K 2 0
sem 12 0K 0K 78643K 2393 0
dirhash 12 2K 2K 78643K 42 0
ACPI 1697 195K 286K 78643K 12548 0
file desc 12 41K 89K 78643K 9062 0
sigio 0 0K 0K 78643K 279 0
proc 70 91K 127K 78643K 1213 0
subproc 91 5K 6K 78643K 262 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 575 0
in_multi 88 6K 7K 78643K 309 0
ether_multi 1 0K 0K 78643K 16 0
mrt 2 0K 0K 78643K 10 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 235 1049K 1049K 78643K 235 0
exec 0 0K 1K 78643K 1793 0
pfkey data 0 0K 0K 78643K 39 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 472 387K 411K 78643K 92139 0
UVM aobj 131 4K 4K 78643K 131 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 312 0
NDP 12 0K 1K 78643K 113 0
temp 74 5924K 6052K 78643K 85139 0
kqueue 12 18K 28K 78643K 1042 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 120 790 0 787 15 13 2 5 0 8 1
rtentry 112 302 0 199 4 0 4 4 0 8 0
unpcb 144 9336 0 9321 79 73 6 10 0 8 5
syncache 312 100 0 100 17 16 1 1 0 8 1
tcpqe 32 223 0 223 14 14 0 1 0 8 0
tcpcb 808 2169 0 2153 66 57 9 12 0 8 4
arp 120 39 0 22 1 0 1 1 0 8 0
inpcb 368 6821 0 6798 118 109 9 15 0 8 4
nd6 136 63 0 39 1 0 1 1 0 8 0
pkpcb 40 32 0 32 8 8 0 1 0 8 0
kcovpl 48 17 0 10 1 0 1 1 0 8 0
ppxss 1256 16 0 16 4 4 0 1 0 8 0
pffrag 232 40 0 36 1 0 1 1 0 482 0
pffrnode 88 36 0 32 1 0 1 1 0 8 0
pffrent 40 240 0 236 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
pfstitem 24 270 0 243 1 0 1 1 0 8 0
pfstkey 128 270 0 243 2 0 2 2 0 8 0
pfstate 376 270 0 243 6 2 4 5 0 8 0
pfrule 1344 21 0 16 2 1 1 2 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 915 0 491 30 0 30 30 0 8 0
art_table 32 916 0 491 4 0 4 4 0 8 0
art_node 16 224 0 130 1 0 1 1 0 8 0
sysvmsgpl 40 4 0 4 1 1 0 1 0 8 0
semapl 112 2391 0 2381 1 0 1 1 0 8 0
shmpl 112 128 0 0 4 0 4 4 0 8 0
dirhash 1024 37 0 20 3 0 3 3 0 8 0
dino2pl 256 13784 0 12305 93 0 93 93 0 8 0
ffsino 272 13784 0 12305 99 0 99 99 0 8 0
nchpl 144 25815 0 25269 63 39 24 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 92609 0 92609 14 13 1 2 0 8 1
percpumem 16 110 0 67 1 0 1 1 0 8 0
vcpupl 2048 116 0 3 15 0 15 15 0 8 0
vmpool 696 119 0 6 11 0 11 11 0 8 0
kstatmem 264 158 0 134 2 0 2 2 0 8 0
scxspl 216 75053 0 75053 28 27 1 8 1 8 1
plimitpl 152 992 0 976 1 0 1 1 0 8 0
sigapl 424 9401 0 9354 9 1 8 8 0 8 1
futexpl 64 79492 0 79492 4 3 1 1 0 8 1
knotepl 120 819 0 0 18 0 18 18 0 8 0
kqueuepl 216 3170 0 3162 61 56 5 8 0 8 4
pipepl 320 1916 0 1889 64 56 8 13 0 8 5
fdescpl 496 9357 0 9332 5 1 4 5 0 8 0
filepl 152 66737 0 66516 150 133 17 28 0 8 6
lockfpl 104 5588 0 5586 16 14 2 2 0 8 1
lockfspl 48 2325 0 2323 1 0 1 1 0 8 0
sessionpl 144 35 0 18 1 0 1 1 0 8 0
pgrppl 48 233 0 216 1 0 1 1 0 8 0
ucredpl 104 8808 0 8796 1 0 1 1 0 8 0
zombiepl 144 9356 0 9354 6 5 1 1 0 8 0
processpl 1072 9401 0 9354 5 0 5 5 0 8 0
procpl 680 26108 0 26044 11 2 9 9 0 8 0
sosppl 168 86 0 86 6 6 0 1 0 8 0
sockpl 488 17052 0 17015 333 315 18 38 0 8 8
mcl64k 65536 25 0 0 4 1 3 3 0 8 0
mcl16k 16384 16 0 0 2 0 2 2 0 8 0
mcl12k 12288 25 0 0 2 0 2 2 0 8 0
mcl9k 9216 20 0 0 2 0 2 2 0 8 0
mcl8k 8192 17 0 0 3 0 3 3 0 8 0
mcl4k 4096 49 0 0 4 0 4 4 0 8 0
mcl2k2 2112 11 0 0 1 0 1 1 0 8 0
mcl2k 2048 403 0 0 34 6 28 34 0 8 0
mtagpl 96 826 0 0 18 0 18 18 0 8 0
mbufpl 256 1768 0 0 89 0 89 89 0 8 0
bufpl 288 17707 0 11384 452 0 452 452 0 8 0
anonpl 24 956748 0 942033 187 73 114 118 0 186 3
amapchunkpl 152 292564 0 291752 91 45 46 46 0 158 6
amappl16 200 17837 0 17299 87 51 36 41 0 8 7
amappl15 192 18 0 17 1 0 1 1 0 8 0
amappl14 184 190 0 175 2 1 1 2 0 8 0
amappl13 176 20 0 20 4 4 0 1 0 8 0
amappl12 168 10208 0 10176 4 2 2 3 0 8 0
amappl11 160 58 0 43 1 0 1 1 0 8 0
amappl10 152 34 0 25 1 0 1 1 0 8 0
amappl9 144 292 0 289 1 0 1 1 0 8 0
amappl8 136 609 0 474 5 0 5 5 0 8 0
amappl7 128 241 0 213 2 0 2 2 0 8 0
amappl6 120 495 0 478 1 0 1 1 0 8 0
amappl5 112 285 0 274 1 0 1 1 0 8 0
amappl4 104 676 0 644 2 1 1 2 0 8 0
amappl3 96 56999 0 56934 4 1 3 3 0 8 0
amappl2 88 10283 0 10208 3 1 2 3 0 8 0
amappl1 80 41660 0 41121 23 11 12 23 0 8 0
amappl 88 91207 0 90966 8 0 8 8 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 72 130 0 0 3 0 3 3 0 8 0
uaddrrnd 24 9476 0 9338 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 9476 0 9338 1 0 1 1 0 8 0
vmmpekpl 168 72653 0 72580 4 0 4 4 0 8 0
vmmpepl 168 559700 0 557217 299 172 127 143 0 357 5
vmsppl 464 9475 0 9337 20 2 18 18 0 8 0
rwobjpl 56 143083 0 135337 119 6 113 114 0 8 2
pdppl 4096 18960 0 18787 459 276 183 184 0 8 10
pvpl 32 2585275 0 2565208 519 311 208 328 0 265 21
pmappl 248 9475 0 9337 10 1 9 9 0 8 0
extentpl 40 56 0 38 1 0 1 1 0 8 0
phpool 112 1521 0 486 30 0 30 30 0 8 0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff827b03e4) at panic+0x17b sys/kern/subr_prf.c:198
__assert(ffffffff8282b893,ffffffff827cea59,19c,ffffffff8283071f) at __assert+0x29 sys/kern/subr_prf.c:157
pmap_page_remove(fffffd80075e0740) at pmap_page_remove+0x5a4 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:426 [inline]
pmap_page_remove(fffffd80075e0740) at pmap_page_remove+0x5a4 sys/arch/amd64/amd64/pmap.c:1944
uvm_anfree_list(fffffd80691df360,ffff8000211af788) at uvm_anfree_list+0x98
amap_wipeout(fffffd80666cc7f0) at amap_wipeout+0x1c1 sys/uvm/uvm_amap.c:504
uvm_unmap_detach(ffff8000211af850,1) at uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1366
uvm_map_teardown(fffffd806e3a41e0) at uvm_map_teardown+0x2f5 sys/uvm/uvm_map.c:2585
uvmspace_free(fffffd806e3a41e0) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3503
reaper(ffff8000211a32a0) at reaper+0x19a sys/kern/kern_exit.c:458
end trace frame: 0x0, count: -10
ddb{0}> machine ddbcpu 1
Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp
x86_ipi_db(ffff800020d48ff0) at x86_ipi_db+0x1e 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+0x27
__mp_lock(ffffffff82cd01e0) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82cd01e0) at __mp_lock+0x122 sys/kern/kern_lock.c:147
syscall(ffff800026747830) at syscall+0x5cd mi_syscall sys/sys/syscall_mi.h:110 [inline]
syscall(ffff800026747830) at syscall+0x5cd sys/arch/amd64/amd64/trap.c:623
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x78ba68516f30, count: 9
ddb{1}> trace
x86_ipi_db(ffff800020d48ff0) at x86_ipi_db+0x1e 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+0x27
__mp_lock(ffffffff82cd01e0) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82cd01e0) at __mp_lock+0x122 sys/kern/kern_lock.c:147
syscall(ffff800026747830) at syscall+0x5cd mi_syscall sys/sys/syscall_mi.h:110 [inline]
syscall(ffff800026747830) at syscall+0x5cd sys/arch/amd64/amd64/trap.c:623
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x78ba68516f30, count: -6
---
This report is generated by a bot. It may contain errors.
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If you want to undo deduplication, reply with:
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syzbot
Mar 8, 2024, 10:03:14 PMMar 8
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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