syzbot |
sign-in | mailing list | source | docs |
| 🐞 Open [133] 🐞 Fixed [269] 🐞 Invalid [575] 📈 Kernel Health 📈 Bug Lifetimes 📈 Fuzzing 📈 Crashes | 💬 Send us feedback |
login: panic: amap_pp_adjref: negative reference count
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*427126 19152 0 0x2 0 0 syz-executor1284
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic() at panic+0x15c sys/kern/subr_prf.c:207
amap_pp_adjref(fffffd80375a0640,7ff,200,1) at amap_pp_adjref+0x59e sys/uvm/uvm_amap.c:829
uvm_mapent_clone(ffff8000006a2400,0,200000,7fc000,7,7) at uvm_mapent_clone+0x14c sys/uvm/uvm_map.c:3733
uvm_share(ffff8000006a2400,0,7,fffffd803f011990,20800000,200000) at uvm_share+0x4b4 uvm_mapent_share sys/uvm/uvm_map.c:3767 [inline]
uvm_share(ffff8000006a2400,0,7,fffffd803f011990,20800000,200000) at uvm_share+0x4b4 sys/uvm/uvm_map.c:3668
vm_impl_init_vmx(ffff8000ffff3860,ffff8000ffff4010) at vm_impl_init_vmx+0xf1 sys/arch/amd64/amd64/vmm.c:1270
vm_create(ffff800000a65000,ffff8000ffff4010) at vm_create+0x193 vm_impl_init sys/arch/amd64/amd64/vmm.c:1385 [inline]
vm_create(ffff800000a65000,ffff8000ffff4010) at vm_create+0x193 sys/arch/amd64/amd64/vmm.c:1174
VOP_IOCTL(fffffd803a947680,c5005601,ffff800000a65000,1,fffffd803f7c6c00,ffff8000ffff4010) at VOP_IOCTL+0x88 sys/kern/vfs_vops.c:291
vn_ioctl(fffffd8036218a58,c5005601,ffff800000a65000,ffff8000ffff4010) at vn_ioctl+0xb7 sys/kern/vfs_vnops.c:533
sys_ioctl(ffff8000ffff4010,ffff8000148da848,ffff8000148da890) at sys_ioctl+0x5b9
syscall(ffff8000148da910) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffc8af0, 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
amap_pp_adjref: negative reference count
ddb> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic() at panic+0x15c sys/kern/subr_prf.c:207
amap_pp_adjref(fffffd80375a0640,7ff,200,1) at amap_pp_adjref+0x59e sys/uvm/uvm_amap.c:829
uvm_mapent_clone(ffff8000006a2400,0,200000,7fc000,7,7) at uvm_mapent_clone+0x14c sys/uvm/uvm_map.c:3733
uvm_share(ffff8000006a2400,0,7,fffffd803f011990,20800000,200000) at uvm_share+0x4b4 uvm_mapent_share sys/uvm/uvm_map.c:3767 [inline]
uvm_share(ffff8000006a2400,0,7,fffffd803f011990,20800000,200000) at uvm_share+0x4b4 sys/uvm/uvm_map.c:3668
vm_impl_init_vmx(ffff8000ffff3860,ffff8000ffff4010) at vm_impl_init_vmx+0xf1 sys/arch/amd64/amd64/vmm.c:1270
vm_create(ffff800000a65000,ffff8000ffff4010) at vm_create+0x193 vm_impl_init sys/arch/amd64/amd64/vmm.c:1385 [inline]
vm_create(ffff800000a65000,ffff8000ffff4010) at vm_create+0x193 sys/arch/amd64/amd64/vmm.c:1174
VOP_IOCTL(fffffd803a947680,c5005601,ffff800000a65000,1,fffffd803f7c6c00,ffff8000ffff4010) at VOP_IOCTL+0x88 sys/kern/vfs_vops.c:291
vn_ioctl(fffffd8036218a58,c5005601,ffff800000a65000,ffff8000ffff4010) at vn_ioctl+0xb7 sys/kern/vfs_vnops.c:533
sys_ioctl(ffff8000ffff4010,ffff8000148da848,ffff8000148da890) at sys_ioctl+0x5b9
syscall(ffff8000148da910) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffc8af0, count: -12
ddb> show registers
rdi 0
rsi 0x1
rbp 0xffff8000148da1a0
rbx 0xffff8000148da250
rdx 0x2
rcx 0x1
rax 0x1
r8 0xffff8000148da160
r9 0x1
r10 0xa5583dfe5ceec6a4
r11 0x2b07f159e1c94563
r12 0x3000000008
r13 0xffff8000148da1b0
r14 0x100
r15 0x1
rip 0xffffffff812012d8 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff8000148da190
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb> show proc
PROC (syz-executor1284) pid=427126 stat=onproc
flags process=2<EXEC> proc=0
pri=86, usrpri=86, nice=20
forw=0xffffffffffffffff, list=0xffff8000ffff4c68,0xffffffff825a1c50
process=0xffff8000148a2018 user=0xffff8000148d5000, vmspace=0xfffffd803f011990
estcpu=36, cpticks=94, pctcpu=2.55
user=0, sys=362, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
*19152 427126 90367 0 7 0x2 syz-executor1284
90367 44126 19333 0 3 0x10008a pause ksh
19333 281632 7398 0 2 0x12 sshd
88982 307274 1 0 3 0x100083 ttyin getty
7398 280111 1 0 3 0x80 select sshd
21012 206759 47589 73 3 0x100090 kqread syslogd
47589 166148 1 0 3 0x100082 netio syslogd
95255 372560 1 77 3 0x100090 poll dhclient
94034 296357 1 0 3 0x80 poll dhclient
75173 474186 0 0 2 0x14200 zerothread
52991 265656 0 0 3 0x14200 aiodoned aiodoned
15812 341109 0 0 2 0x14200 update
52542 515431 0 0 3 0x14200 cleaner cleaner
95256 29038 0 0 3 0x14200 reaper reaper
26964 307942 0 0 3 0x14200 pgdaemon pagedaemon
33568 296996 0 0 3 0x14200 bored crynlk
86959 139080 0 0 3 0x14200 bored crypto
16373 516327 0 0 3 0x40014200 acpi0 acpi0
96933 37590 0 0 2 0x14200 softnet
30309 460263 0 0 2 0x14200 systqmp
93197 174532 0 0 3 0x14200 bored systq
97761 479780 0 0 2 0x40014200 softclock
27048 27355 0 0 3 0x40014200 idle0
37284 76635 0 0 3 0x14200 bored smr
1 156937 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 Kern Lim
devbuf 9438 6318K 6319K 78643K 10535 0 0
pcb 13 8K 8K 78643K 13 0 0
rtable 61 1K 2K 78643K 115 0 0
ifaddr 24 7K 7K 78643K 24 0 0
counters 19 16K 16K 78643K 19 0 0
ioctlops 1 2K 2K 78643K 14 0 0
mount 1 1K 1K 78643K 1 0 0
vnodes 1180 74K 74K 78643K 1185 0 0
UFS quota 1 32K 32K 78643K 1 0 0
UFS mount 5 36K 36K 78643K 5 0 0
shm 2 1K 1K 78643K 2 0 0
VM map 3 0K 0K 78643K 3 0 0
sem 2 0K 0K 78643K 2 0 0
dirhash 12 2K 2K 78643K 12 0 0
ACPI 1794 195K 288K 78643K 12646 0 0
file desc 1 0K 0K 78643K 1 0 0
proc 47 38K 46K 78643K 278 0 0
NFS srvsock 1 0K 0K 78643K 1 0 0
NFS daemon 1 16K 16K 78643K 1 0 0
in_multi 11 0K 0K 78643K 11 0 0
ether_multi 1 0K 0K 78643K 1 0 0
ISOFS mount 1 32K 32K 78643K 1 0 0
MSDOSFS mount 1 16K 16K 78643K 1 0 0
ttys 18 79K 79K 78643K 18 0 0
exec 0 0K 1K 78643K 151 0 0
pagedep 1 8K 8K 78643K 1 0 0
inodedep 1 32K 32K 78643K 1 0 0
newblk 1 0K 0K 78643K 1 0 0
VM swap 7 26K 26K 78643K 7 0 0
UVM amap 52 11K 11K 78643K 686 0 0
UVM aobj 2 2K 2K 78643K 2 0 0
memdesc 1 4K 4K 78643K 1 0 0
crypto data 1 1K 1K 78643K 1 0 0
NDP 3 0K 0K 78643K 3 0 0
temp 21 3519K 3583K 78643K 1687 0 0
SYN cache 2 16K 16K 78643K 2 0 0
ddb> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
arp 64 2 0 0 1 0 1 1 0 8 0
rtpcb 80 15 0 13 1 0 1 1 0 8 0
rtentry 112 23 0 1 1 0 1 1 0 8 0
unpcb 120 27 0 19 1 0 1 1 0 8 0
syncache 264 5 0 5 1 0 1 1 0 8 1
tcpcb 544 8 0 5 1 0 1 1 0 8 0
inpcb 280 22 0 16 1 0 1 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 95 0 0 6 0 6 6 0 8 0
art_table 32 96 0 0 1 0 1 1 0 8 0
art_node 16 22 0 2 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino1pl 128 1389 0 15 45 0 45 45 0 8 0
ffsino 240 1389 0 15 81 0 81 81 0 8 0
nchpl 144 1576 0 44 57 0 57 57 0 8 0
uvmvnodes 72 1398 0 0 26 0 26 26 0 8 0
vnodes 208 1398 0 0 74 0 74 74 0 8 0
namei 1024 3453 0 3453 1 0 1 1 0 8 1
vmpool 520 1 0 0 1 0 1 1 0 8 0
scxspl 192 2380 0 2380 2 1 1 2 0 8 1
plimitpl 152 13 0 8 1 0 1 1 0 8 0
sigapl 432 175 0 165 2 0 2 2 0 8 0
knotepl 112 5 0 0 1 0 1 1 0 8 0
kqueuepl 104 1 0 0 1 0 1 1 0 8 0
pipepl 128 116 0 107 1 0 1 1 0 8 0
fdescpl 424 176 0 165 2 0 2 2 0 8 0
filepl 120 836 0 790 2 0 2 2 0 8 0
lockfpl 104 5 0 4 1 0 1 1 0 8 0
lockfspl 48 3 0 2 1 0 1 1 0 8 0
sessionpl 112 17 0 9 1 0 1 1 0 8 0
pgrppl 48 17 0 9 1 0 1 1 0 8 0
ucredpl 96 47 0 40 1 0 1 1 0 8 0
zombiepl 144 165 0 165 1 0 1 1 0 8 1
processpl 864 190 0 165 4 0 4 4 0 8 0
procpl 632 190 0 165 3 0 3 3 0 8 0
sockpl 384 64 0 48 2 0 2 2 0 8 0
mcl4k 4096 10 0 10 1 0 1 1 0 8 1
mcl2k 2048 5765 0 5733 7 1 6 7 0 8 1
mtagpl 80 2 0 2 1 1 0 1 0 8 0
mbufpl 256 9858 0 9811 7 2 5 6 0 8 1
bufpl 256 2046 0 240 113 0 113 113 0 8 0
anonpl 16 18942 0 15780 15 2 13 13 0 62 0
amapchunkpl 152 590 0 427 7 0 7 7 0 158 0
amappl16 192 69 0 65 1 0 1 1 0 8 0
amappl14 176 35 0 31 1 0 1 1 0 8 0
amappl12 160 5 0 5 1 0 1 1 0 8 1
amappl11 152 43 0 32 1 0 1 1 0 8 0
amappl10 144 1 0 1 1 1 0 1 0 8 0
amappl9 136 364 0 363 1 0 1 1 0 8 0
amappl8 128 83 0 79 1 0 1 1 0 8 0
amappl7 120 15 0 14 1 0 1 1 0 8 0
amappl6 112 42 0 38 1 0 1 1 0 8 0
amappl5 104 163 0 152 1 0 1 1 0 8 0
amappl4 96 394 0 372 1 0 1 1 0 8 0
amappl3 88 104 0 98 1 0 1 1 0 8 0
amappl2 80 693 0 644 2 0 2 2 0 8 0
amappl1 72 11944 0 11562 16 7 9 16 0 8 0
amappl 80 353 0 333 1 0 1 1 0 84 0
dma4096 4096 1 0 1 1 1 0 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 64 1 0 0 1 0 1 1 0 8 0
uaddrrnd 24 177 0 165 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 177 0 165 1 0 1 1 0 8 0
vmmpekpl 168 5295 0 5281 1 0 1 1 0 8 0
vmmpepl 168 25370 0 24630 48 9 39 48 0 357 5
vmsppl 272 175 0 165 1 0 1 1 0 8 0
pdppl 4096 360 0 330 5 0 5 5 0 8 0
pvpl 32 72235 0 67447 39 0 39 39 0 265 0
pmappl 200 176 0 165 1 0 1 1 0 8 0
extentpl 40 46 0 29 1 0 1 1 0 8 0
phpool 112 229 0 5 7 0 7 7 0 8 0
| Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2019/11/24 16:53 | openbsd | 978220ac0b15 | 598ca6c8 | .config | console log | report | syz | C | ci-openbsd-main | |||
| 2019/11/24 15:41 | openbsd | 978220ac0b15 | 598ca6c8 | .config | console log | report | ci-openbsd-main | |||||
| 2019/11/21 08:47 | openbsd | ddfcd1cc9cf3 | 8098ea0f | .config | console log | report | ci-openbsd-main | |||||
| 2019/11/20 00:25 | openbsd | 593a100ba7e7 | b7a277d2 | .config | console log | report | ci-openbsd-multicore | |||||
| 2019/11/19 17:11 | openbsd | 30d546f475f9 | 432c7650 | .config | console log | report | ci-openbsd-multicore | |||||
| 2019/11/19 05:47 | openbsd | d2a7ef3889e2 | 5bc70212 | .config | console log | report | ci-openbsd-main | |||||
| 2019/11/19 02:14 | openbsd | d2a7ef3889e2 | 5bc70212 | .config | console log | report | ci-openbsd-multicore | |||||
| 2019/11/18 23:35 | openbsd | d2a7ef3889e2 | 5bc70212 | .config | console log | report | ci-openbsd-main | |||||
| 2019/11/18 21:17 | openbsd | d2a7ef3889e2 | 5bc70212 | .config | console log | report | ci-openbsd-multicore | |||||
| 2019/11/18 17:26 | openbsd | 0f6aa5032768 | 1daed50a | .config | console log | report | ci-openbsd-main | |||||
| 2019/11/18 13:40 | openbsd | 0f6aa5032768 | 1daed50a | .config | console log | report | ci-openbsd-multicore | |||||
| 2019/11/18 09:36 | openbsd | 0f6aa5032768 | 1daed50a | .config | console log | report | ci-openbsd-multicore | |||||
| 2019/11/18 07:30 | openbsd | 4022b8731182 | d5696d51 | .config | console log | report | ci-openbsd-multicore | |||||
| 2019/11/17 05:12 | openbsd | e8d9fd7d60d7 | d5696d51 | .config | console log | report | ci-openbsd-main | |||||
| 2019/11/17 03:11 | openbsd | e8d9fd7d60d7 | d5696d51 | .config | console log | report | ci-openbsd-main | |||||
| 2019/11/17 01:18 | openbsd | d8449269f3d4 | d5696d51 | .config | console log | report | ci-openbsd-multicore | |||||
| 2019/11/16 22:18 | openbsd | b78dbe0757a3 | d5696d51 | .config | console log | report | ci-openbsd-multicore | |||||
| 2019/11/16 16:46 | openbsd | b78dbe0757a3 | d5696d51 | .config | console log | report | ci-openbsd-multicore | |||||
| 2019/11/16 15:14 | openbsd | b78dbe0757a3 | d5696d51 | .config | console log | report | ci-openbsd-main | |||||
| 2019/11/16 13:37 | openbsd | b78dbe0757a3 | d5696d51 | .config | console log | report | ci-openbsd-main | |||||
| 2019/11/16 12:01 | openbsd | b78dbe0757a3 | d5696d51 | .config | console log | report | ci-openbsd-multicore | |||||
| 2019/11/16 08:04 | openbsd | c982058ecee1 | cdac920b | .config | console log | report | ci-openbsd-main | |||||
| 2019/11/16 00:48 | openbsd | c982058ecee1 | cdac920b | .config | console log | report | ci-openbsd-multicore | |||||
| 2019/11/15 13:23 | openbsd | 096d667cd04e | 79248ee8 | .config | console log | report | ci-openbsd-multicore | |||||
| 2019/11/15 11:37 | openbsd | 096d667cd04e | 79248ee8 | .config | console log | report | ci-openbsd-multicore | |||||
| 2019/11/15 06:48 | openbsd | 3d133dcfcb5d | a24fe792 | .config | console log | report | ci-openbsd-main | |||||
| 2019/11/15 01:19 | openbsd | 3d133dcfcb5d | a24fe792 | .config | console log | report | ci-openbsd-main | |||||
| 2019/11/14 17:15 | openbsd | 9d8a210628dc | 5d15a967 | .config | console log | report | ci-openbsd-main | |||||
| 2019/11/14 12:01 | openbsd | 9d8a210628dc | 5d15a967 | .config | console log | report | ci-openbsd-multicore | |||||
| 2019/11/14 10:15 | openbsd | 9d8a210628dc | 5d15a967 | .config | console log | report | ci-openbsd-multicore | |||||
| 2019/11/13 22:21 | openbsd | 39b7db2742d3 | 048f2d49 | .config | console log | report | ci-openbsd-main | |||||
| 2019/11/13 14:52 | openbsd | 16e245ae7f37 | 048f2d49 | .config | console log | report | ci-openbsd-multicore | |||||
| 2019/11/13 11:36 | openbsd | 16e245ae7f37 | 048f2d49 | .config | console log | report | ci-openbsd-main | |||||
| 2019/11/13 10:12 | openbsd | 16e245ae7f37 | 048f2d49 | .config | console log | report | ci-openbsd-main | |||||
| 2019/11/13 04:25 | openbsd | f0c2caef18b3 | 048f2d49 | .config | console log | report | ci-openbsd-main | |||||
| 2019/11/12 21:16 | openbsd | f0c2caef18b3 | 048f2d49 | .config | console log | report | ci-openbsd-main | |||||
| 2019/11/12 06:49 | openbsd | 32906ae91db3 | 048f2d49 | .config | console log | report | ci-openbsd-multicore | |||||
| 2019/11/12 04:04 | openbsd | 32906ae91db3 | 048f2d49 | .config | console log | report | ci-openbsd-main | |||||
| 2019/11/12 01:03 | openbsd | 1511e2d13702 | 377d77fa | .config | console log | report | ci-openbsd-multicore | |||||
| 2019/11/11 18:19 | openbsd | 1511e2d13702 | 377d77fa | .config | console log | report | ci-openbsd-multicore | |||||
| 2019/11/11 17:12 | openbsd | 1511e2d13702 | 377d77fa | .config | console log | report | ci-openbsd-multicore | |||||
| 2019/11/11 14:57 | openbsd | 864e97e9f9ba | dc438b91 | .config | console log | report | ci-openbsd-multicore | |||||
| 2019/11/11 11:55 | openbsd | 864e97e9f9ba | dc438b91 | .config | console log | report | ci-openbsd-main | |||||
| 2019/11/11 09:25 | openbsd | 864e97e9f9ba | dc438b91 | .config | console log | report | ci-openbsd-main | |||||
| 2019/11/11 03:24 | openbsd | 58a0869c7088 | dc438b91 | .config | console log | report | ci-openbsd-multicore | |||||
| 2019/11/11 02:43 | openbsd | 58a0869c7088 | dc438b91 | .config | console log | report | ci-openbsd-main | |||||
| 2019/11/11 02:21 | openbsd | 58a0869c7088 | dc438b91 | .config | console log | report | ci-openbsd-multicore | |||||
| 2019/11/10 22:03 | openbsd | 58a0869c7088 | dc438b91 | .config | console log | report | ci-openbsd-main | |||||
| 2019/10/03 07:43 | openbsd | c722278fddec | 2e29b534 | .config | console log | report | ci-openbsd-multicore |