panic: attempt to execute user address 0x0 in supervisor mode
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syzbot
Sep 11, 2019, 1:57:07 AM9/11/19
to syzkaller-o...@googlegroups.com
Hello,
syzbot found the following crash on:
HEAD commit: ce97d859 document EVP_PKEY_CTX_get_signature_md(3); jsing@..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=13343411600000
kernel config: https://syzkaller.appspot.com/x/.config?x=d0fe83f82fe104d4
dashboard link: https://syzkaller.appspot.com/bug?extid=e4016149b5a9922e4712
Unfortunately, I don't have any reproducer for this crash yet.
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+e40161...@syzkaller.appspotmail.com
panic: attempt to execute user address 0x0 in supervisor mode
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*417886 4131 0 0 0x4000000 0 syz-executor.1
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic() at panic+0x15c sys/kern/subr_prf.c:207
pageflttrap() at pageflttrap+0x3eb
kerntrap(ffff800018b5bf00) at kerntrap+0xdb sys/arch/amd64/amd64/trap.c:287
alltraps_kern_meltdown(6,ffff800015709000,fffffd802ef110e8,10,ffff80000005b870,ffff800018b5c168)
at
alltraps_kern_meltdown+0x7b
0(b,ffff800018b5c0c8,83,ffff800018b5c168,0,b) at 0
rt_match(fffffd80370205f8,fffffd802ec58874,1,0) at rt_match+0xbe rt_clone
sys/net/route.c:266 [inline]
rt_match(fffffd80370205f8,fffffd802ec58874,1,0) at rt_match+0xbe
sys/net/route.c:242
ip_output(fffffd80345d1600,0,fffffd80370205e8,20,0,fffffd8037020578) at
ip_output+0x4d2 sys/netinet/ip_output.c:204
rip_output(fffffd80345d1600,fffffd802e2857d8,ffff800018b5c378,ffff800015709000)
at
rip_output+0x22b sys/netinet/raw_ip.c:289
rip_usrreq(fffffd802e2857d8,9,fffffd80345d1600,0,0,ffff8000ffff3b40) at
rip_usrreq+0x46a sys/netinet/raw_ip.c:538
sosend(fffffd802e2857d8,0,ffff800018b5c4e0,0,0,0) at sosend+0x63d
sys/kern/uipc_socket.c:524
sendit(ffff8000ffff3b40,5,ffff800018b5c5c0,0,ffff800018b5c6a0) at
sendit+0x52b sys/kern/uipc_syscalls.c:662
sys_sendto(ffff8000ffff3b40,ffff800018b5c658,ffff800018b5c6a0) at
sys_sendto+0x80 sys/kern/uipc_syscalls.c:527
syscall(ffff800018b5c720) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555
end trace frame: 0xffff800018b5c7a0, count: 0
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
attempt to execute user address 0x0 in supervisor mode
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
pageflttrap() at pageflttrap+0x3eb
kerntrap(ffff800018b5bf00) at kerntrap+0xdb sys/arch/amd64/amd64/trap.c:287
alltraps_kern_meltdown(6,ffff800015709000,fffffd802ef110e8,10,ffff80000005b870,ffff800018b5c168)
at
alltraps_kern_meltdown+0x7b
0(b,ffff800018b5c0c8,83,ffff800018b5c168,0,b) at 0
rt_match(fffffd80370205f8,fffffd802ec58874,1,0) at rt_match+0xbe rt_clone
sys/net/route.c:266 [inline]
rt_match(fffffd80370205f8,fffffd802ec58874,1,0) at rt_match+0xbe
sys/net/route.c:242
ip_output(fffffd80345d1600,0,fffffd80370205e8,20,0,fffffd8037020578) at
ip_output+0x4d2 sys/netinet/ip_output.c:204
rip_output(fffffd80345d1600,fffffd802e2857d8,ffff800018b5c378,ffff800015709000)
at
rip_output+0x22b sys/netinet/raw_ip.c:289
rip_usrreq(fffffd802e2857d8,9,fffffd80345d1600,0,0,ffff8000ffff3b40) at
rip_usrreq+0x46a sys/netinet/raw_ip.c:538
sosend(fffffd802e2857d8,0,ffff800018b5c4e0,0,0,0) at sosend+0x63d
sys/kern/uipc_socket.c:524
sendit(ffff8000ffff3b40,5,ffff800018b5c5c0,0,ffff800018b5c6a0) at
sendit+0x52b sys/kern/uipc_syscalls.c:662
sys_sendto(ffff8000ffff3b40,ffff800018b5c658,ffff800018b5c6a0) at
sys_sendto+0x80 sys/kern/uipc_syscalls.c:527
syscall(ffff800018b5c720) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555
Xsyscall(6,0,ffffffffffffffd8,0,6,a71abe4b010) at Xsyscall+0x128
end of kernel
end trace frame: 0xa74251dd6b0, count: -15
ddb> show registers
rdi 0xffffffff814d3647 db_enter+0x17
rsi 0x21f9 __ALIGN_SIZE+0x11f9
rbp 0xffff800018b5bd70
rbx 0xffff800018b5be20
rdx 0x21fa __ALIGN_SIZE+0x11fa
rcx 0xffff800015709000
rax 0xffff800015709000
r8 0xffff800018b5bd30
r9 0x1
r10 0xffff800000b64980
r11 0x3c42576b6504d26f
r12 0x3000000008
r13 0xffff800018b5bd80
r14 0x100
r15 0x1
rip 0xffffffff814d3648 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff800018b5bd60
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb> show proc
PROC (syz-executor.1) pid=417886 stat=onproc
flags process=0 proc=4000000<THREAD>
pri=77, usrpri=77, nice=20
forw=0xffffffffffffffff, list=0xffff8000ffff3160,0xffffffff82585f08
process=0xffff8000ffff6d90 user=0xffff800018b57000,
vmspace=0xfffffd803f014770
estcpu=36, cpticks=0, pctcpu=0.0
user=0, sys=0, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
4131 474853 48945 0 2 0 syz-executor.1
* 4131 417886 48945 0 7 0x4000000 syz-executor.1
48945 23478 50236 0 3 0x82 nanosleep syz-executor.1
74504 512382 0 0 3 0x14200 acct acct
35488 505173 50236 0 2 0x2 syz-executor.0
43434 459226 1 0 3 0x100083 ttyin getty
21610 210681 0 0 3 0x14200 bored sosplice
50236 98392 33102 0 3 0x82 thrsleep syz-fuzzer
50236 84111 33102 0 3 0x4000082 nanosleep syz-fuzzer
50236 200233 33102 0 3 0x4000082 thrsleep syz-fuzzer
50236 296210 33102 0 3 0x4000082 thrsleep syz-fuzzer
50236 431163 33102 0 3 0x4000082 thrsleep syz-fuzzer
50236 75096 33102 0 3 0x4000082 kqread syz-fuzzer
50236 265426 33102 0 3 0x4000082 thrsleep syz-fuzzer
33102 32900 54031 0 3 0x10008a pause ksh
54031 310818 67206 0 3 0x92 select sshd
67206 50524 1 0 3 0x80 select sshd
97251 502287 7224 73 3 0x100090 kqread syslogd
7224 96787 1 0 3 0x100082 netio syslogd
95338 263230 0 0 2 0x14200 zerothread
59544 67656 0 0 3 0x14200 aiodoned aiodoned
38099 291200 0 0 3 0x14200 syncer update
17801 445396 0 0 3 0x14200 cleaner cleaner
63721 156695 0 0 3 0x14200 reaper reaper
87478 204530 0 0 3 0x14200 pgdaemon pagedaemon
47286 74919 0 0 3 0x14200 bored crynlk
63155 199433 0 0 3 0x14200 bored crypto
72811 330516 0 0 3 0x40014200 acpi0 acpi0
55725 100070 0 0 3 0x14200 bored softnet
69221 21192 0 0 3 0x14200 bored systqmp
78598 60 0 0 3 0x14200 bored systq
56343 311399 0 0 3 0x40014200 bored softclock
77838 502300 0 0 3 0x40014200 idle0
36187 317675 0 0 3 0x14200 bored smr
1 446188 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 9600 6573K 7467K 78643K 37101 0 0
pcb 13 8K 8K 78643K 1496 0 0
rtable 109 12K 13K 78643K 2782 0 0
ifaddr 79 22K 27K 78643K 1149 0 0
counters 19 16K 16K 78643K 19 0 0
ioctlops 0 0K 2K 78643K 622 0 0
iov 0 0K 32K 78643K 1245 0 0
mount 1 1K 1K 78643K 1 0 0
vnodes 1204 76K 77K 78643K 11649 0 0
UFS quota 1 32K 32K 78643K 1 0 0
UFS mount 5 36K 36K 78643K 5 0 0
shm 2 1K 5K 78643K 151 0 0
VM map 2 0K 0K 78643K 26 0 0
sem 12 0K 1K 78643K 1339 0 0
dirhash 12 2K 2K 78643K 12 0 0
ACPI 1793 195K 288K 78643K 12645 0 0
file desc 5 13K 25K 78643K 11706 0 0
sigio 0 0K 0K 78643K 256 0 0
proc 45 30K 63K 78643K 2876 0 0
subproc 32 2K 2K 78643K 720 0 0
NFS srvsock 1 0K 0K 78643K 1 0 0
NFS daemon 1 16K 16K 78643K 1 0 0
ip_moptions 0 0K 0K 78643K 1241 0 0
in_multi 24 1K 2K 78643K 815 0 0
ether_multi 1 0K 0K 78643K 48 0 0
mrt 0 0K 0K 78643K 57 0 0
ISOFS mount 1 32K 32K 78643K 1 0 0
MSDOSFS mount 1 16K 16K 78643K 1 0 0
ttys 198 874K 874K 78643K 198 0 0
exec 0 0K 1K 78643K 1753 0 0
pfkey data 0 0K 4K 78643K 4 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 116 22K 40K 78643K 28981 0 0
UVM aobj 130 4K 4K 78643K 141 0 0
memdesc 1 4K 4K 78643K 1 0 0
crypto data 1 1K 1K 78643K 1 0 0
ip6_options 0 0K 1K 78643K 1417 0 0
NDP 21 0K 1K 78643K 363 0 0
temp 218 3532K 4172K 78643K 176144 0 0
kqueue 0 0K 0K 78643K 114 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 64 279 0 275 1 0 1 1 0
8 0
rtpcb 80 699 0 699 31 30 1 1 0
8 1
rtentry 112 872 0 833 2 0 2 2 0
8 0
unpcb 120 7795 0 7773 32 30 2 3 0
8 1
syncache 264 4 0 4 1 1 0 1 0
8 0
sackhl 24 3 0 3 3 3 0 1 0
8 0
tcpqe 32 7156 0 7156 1 1 0 1 0
8 0
tcpcb 544 5991 0 5987 43 41 2 3 0
8 1
ipq 40 16 0 16 6 6 0 1 0
8 0
ipqe 40 41 0 41 6 6 0 1 0
8 0
inpcb 280 24047 0 24041 57 55 2 5 0
8 1
rttmr 72 13 0 13 11 11 0 1 0
8 0
nd6 48 82 0 80 2 1 1 1 0
8 0
pkpcb 40 60 0 60 25 25 0 1 0
8 0
swfcl 56 5 0 0 1 0 1 1 0
8 0
ppxss 1128 164 0 164 40 40 0 1 0
8 0
art_heap8 4096 1 0 0 1 0 1 1 0
8 0
art_heap4 256 2341 0 2138 33 17 16 17 0
8 1
art_table 32 2342 0 2138 3 1 2 3 0
8 0
art_node 16 662 0 627 1 0 1 1 0
8 0
sysvmsgpl 40 47 0 32 1 0 1 1 0
8 0
semupl 112 2 0 2 1 1 0 1 0
8 0
semapl 112 1333 0 1323 1 0 1 1 0
8 0
shmpl 112 139 0 11 4 0 4 4 0
8 0
dirhash 1024 17 0 0 3 0 3 3 0
8 0
dino1pl 128 19069 0 17667 46 0 46 46 0
8 0
ffsino 240 19069 0 17667 83 0 83 83 0
8 0
nchpl 144 36351 0 34738 63 1 62 62 0
8 0
uvmvnodes 72 8301 0 0 151 0 151 151 0
8 0
vnodes 208 8301 0 0 437 0 437 437 0
8 0
namei 1024 122528 0 122528 9 8 1 1 0
8 1
vmpool 520 24 0 24 9 9 0 1 0
8 0
scsiplug 64 17 0 17 11 11 0 1 0
8 0
scxspl 192 111664 0 111664 41 40 1 7 0
8 1
plimitpl 152 994 0 988 1 0 1 1 0
8 0
sigapl 432 11760 0 11749 2 0 2 2 0
8 0
futexpl 56 289751 0 289751 10 9 1 1 0
8 1
knotepl 112 2951 0 2932 9 8 1 3 0
8 0
kqueuepl 104 9382 0 9380 1 0 1 1 0
8 0
pipepl 112 5992 0 5973 19 18 1 2 0
8 0
fdescpl 424 11761 0 11749 2 0 2 2 0
8 0
filepl 120 102964 0 102878 47 43 4 7 0
8 1
lockfpl 104 3601 0 3601 12 11 1 1 0
8 1
lockfspl 48 1212 0 1212 12 11 1 1 0
8 1
sessionpl 112 60 0 52 1 0 1 1 0
8 0
pgrppl 48 173 0 165 1 0 1 1 0
8 0
ucredpl 96 13851 0 13844 1 0 1 1 0
8 0
zombiepl 144 11750 0 11750 3 2 1 1 0
8 1
processpl 864 11778 0 11750 4 0 4 4 0
8 0
procpl 632 26271 0 26236 4 0 4 4 0
8 0
sosppl 128 160 0 160 39 39 0 1 0
8 0
sockpl 384 32745 0 32718 112 105 7 11 0
8 3
mcl64k 65536 2850 0 2850 345 345 0 129 0
8 0
mcl16k 16384 68 0 68 38 38 0 1 0
8 0
mcl12k 12288 199 0 199 34 33 1 1 0
8 1
mcl9k 9216 149 0 149 45 44 1 1 0
8 1
mcl8k 8192 331 0 331 31 30 1 1 0
8 1
mcl4k 4096 995 0 995 14 13 1 1 0
8 1
mcl2k2 2112 97 0 97 33 32 1 1 0
8 1
mcl2k 2048 74061 0 74017 32 26 6 14 0
8 0
mtagpl 80 310 0 308 8 7 1 1 0
8 0
mbufpl 256 197576 0 197486 171 162 9 70 0
8 0
bufpl 256 35974 0 27647 521 0 521 521 0
8 0
anonpl 16 1100776 0 1089539 339 276 63 78 0
62 0
amapchunkpl 152 52329 0 52231 112 107 5 18 0
158 0
amappl16 192 61162 0 60348 385 343 42 56 0
8 1
amappl15 184 2612 0 2611 8 7 1 1 0
8 0
amappl14 176 2904 0 2900 1 0 1 1 0
8 0
amappl13 168 1073 0 1073 8 8 0 1 0
8 0
amappl12 160 939 0 933 1 0 1 1 0
8 0
amappl11 152 729 0 725 1 0 1 1 0
8 0
amappl10 144 1582 0 1579 1 0 1 1 0
8 0
amappl9 136 2672 0 2664 1 0 1 1 0
8 0
amappl8 128 2237 0 2196 2 0 2 2 0
8 0
amappl7 120 1797 0 1789 1 0 1 1 0
8 0
amappl6 112 676 0 663 1 0 1 1 0
8 0
amappl5 104 1426 0 1417 1 0 1 1 0
8 0
amappl4 96 10485 0 10461 1 0 1 1 0
8 0
amappl3 88 5064 0 5058 1 0 1 1 0
8 0
amappl2 80 93605 0 93546 3 1 2 3 0
8 0
amappl1 72 219602 0 219220 26 16 10 20 0
8 0
amappl 80 27136 0 27105 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
dma64 64 259 0 259 1 1 0 1 0
8 0
dma32 32 7 0 7 1 1 0 1 0
8 0
dma16 16 17 0 17 1 1 0 1 0
8 0
aobjpl 64 140 0 11 3 0 3 3 0
8 0
uaddrrnd 24 11785 0 11749 1 0 1 1 0
8 0
uaddrbest 32 2 0 0 1 0 1 1 0
8 0
uaddr 24 11785 0 11749 1 0 1 1 0
8 0
vmmpekpl 168 68071 0 68043 2 0 2 2 0
8 0
vmmpepl 168 1415288 0 1413487 687 577 110 110 0 357
22
vmsppl 272 11760 0 11749 2 1 1 2 0
8 0
pdppl 4096 23576 0 23546 12 7 5 6 0
8 1
pvpl 32 3138919 0 3124656 865 716 149 290 0
265 0
pmappl 200 11784 0 11773 1 0 1 1 0
8 0
extentpl 40 41 0 26 1 0 1 1 0
8 0
phpool 112 1340 0 690 21 1 20 20 0
8 0
---
This bug is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this bug report. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot found the following crash on:
HEAD commit: ce97d859 document EVP_PKEY_CTX_get_signature_md(3); jsing@..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=13343411600000
kernel config: https://syzkaller.appspot.com/x/.config?x=d0fe83f82fe104d4
dashboard link: https://syzkaller.appspot.com/bug?extid=e4016149b5a9922e4712
Unfortunately, I don't have any reproducer for this crash yet.
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+e40161...@syzkaller.appspotmail.com
panic: attempt to execute user address 0x0 in supervisor mode
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*417886 4131 0 0 0x4000000 0 syz-executor.1
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic() at panic+0x15c sys/kern/subr_prf.c:207
pageflttrap() at pageflttrap+0x3eb
kerntrap(ffff800018b5bf00) at kerntrap+0xdb sys/arch/amd64/amd64/trap.c:287
alltraps_kern_meltdown(6,ffff800015709000,fffffd802ef110e8,10,ffff80000005b870,ffff800018b5c168)
at
alltraps_kern_meltdown+0x7b
0(b,ffff800018b5c0c8,83,ffff800018b5c168,0,b) at 0
rt_match(fffffd80370205f8,fffffd802ec58874,1,0) at rt_match+0xbe rt_clone
sys/net/route.c:266 [inline]
rt_match(fffffd80370205f8,fffffd802ec58874,1,0) at rt_match+0xbe
sys/net/route.c:242
ip_output(fffffd80345d1600,0,fffffd80370205e8,20,0,fffffd8037020578) at
ip_output+0x4d2 sys/netinet/ip_output.c:204
rip_output(fffffd80345d1600,fffffd802e2857d8,ffff800018b5c378,ffff800015709000)
at
rip_output+0x22b sys/netinet/raw_ip.c:289
rip_usrreq(fffffd802e2857d8,9,fffffd80345d1600,0,0,ffff8000ffff3b40) at
rip_usrreq+0x46a sys/netinet/raw_ip.c:538
sosend(fffffd802e2857d8,0,ffff800018b5c4e0,0,0,0) at sosend+0x63d
sys/kern/uipc_socket.c:524
sendit(ffff8000ffff3b40,5,ffff800018b5c5c0,0,ffff800018b5c6a0) at
sendit+0x52b sys/kern/uipc_syscalls.c:662
sys_sendto(ffff8000ffff3b40,ffff800018b5c658,ffff800018b5c6a0) at
sys_sendto+0x80 sys/kern/uipc_syscalls.c:527
syscall(ffff800018b5c720) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555
end trace frame: 0xffff800018b5c7a0, count: 0
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
attempt to execute user address 0x0 in supervisor mode
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
pageflttrap() at pageflttrap+0x3eb
kerntrap(ffff800018b5bf00) at kerntrap+0xdb sys/arch/amd64/amd64/trap.c:287
alltraps_kern_meltdown(6,ffff800015709000,fffffd802ef110e8,10,ffff80000005b870,ffff800018b5c168)
at
alltraps_kern_meltdown+0x7b
0(b,ffff800018b5c0c8,83,ffff800018b5c168,0,b) at 0
rt_match(fffffd80370205f8,fffffd802ec58874,1,0) at rt_match+0xbe rt_clone
sys/net/route.c:266 [inline]
rt_match(fffffd80370205f8,fffffd802ec58874,1,0) at rt_match+0xbe
sys/net/route.c:242
ip_output(fffffd80345d1600,0,fffffd80370205e8,20,0,fffffd8037020578) at
ip_output+0x4d2 sys/netinet/ip_output.c:204
rip_output(fffffd80345d1600,fffffd802e2857d8,ffff800018b5c378,ffff800015709000)
at
rip_output+0x22b sys/netinet/raw_ip.c:289
rip_usrreq(fffffd802e2857d8,9,fffffd80345d1600,0,0,ffff8000ffff3b40) at
rip_usrreq+0x46a sys/netinet/raw_ip.c:538
sosend(fffffd802e2857d8,0,ffff800018b5c4e0,0,0,0) at sosend+0x63d
sys/kern/uipc_socket.c:524
sendit(ffff8000ffff3b40,5,ffff800018b5c5c0,0,ffff800018b5c6a0) at
sendit+0x52b sys/kern/uipc_syscalls.c:662
sys_sendto(ffff8000ffff3b40,ffff800018b5c658,ffff800018b5c6a0) at
sys_sendto+0x80 sys/kern/uipc_syscalls.c:527
syscall(ffff800018b5c720) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555
Xsyscall(6,0,ffffffffffffffd8,0,6,a71abe4b010) at Xsyscall+0x128
end of kernel
end trace frame: 0xa74251dd6b0, count: -15
ddb> show registers
rdi 0xffffffff814d3647 db_enter+0x17
rsi 0x21f9 __ALIGN_SIZE+0x11f9
rbp 0xffff800018b5bd70
rbx 0xffff800018b5be20
rdx 0x21fa __ALIGN_SIZE+0x11fa
rcx 0xffff800015709000
rax 0xffff800015709000
r8 0xffff800018b5bd30
r9 0x1
r10 0xffff800000b64980
r11 0x3c42576b6504d26f
r12 0x3000000008
r13 0xffff800018b5bd80
r14 0x100
r15 0x1
rip 0xffffffff814d3648 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff800018b5bd60
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb> show proc
PROC (syz-executor.1) pid=417886 stat=onproc
flags process=0 proc=4000000<THREAD>
pri=77, usrpri=77, nice=20
forw=0xffffffffffffffff, list=0xffff8000ffff3160,0xffffffff82585f08
process=0xffff8000ffff6d90 user=0xffff800018b57000,
vmspace=0xfffffd803f014770
estcpu=36, cpticks=0, pctcpu=0.0
user=0, sys=0, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
4131 474853 48945 0 2 0 syz-executor.1
* 4131 417886 48945 0 7 0x4000000 syz-executor.1
48945 23478 50236 0 3 0x82 nanosleep syz-executor.1
74504 512382 0 0 3 0x14200 acct acct
35488 505173 50236 0 2 0x2 syz-executor.0
43434 459226 1 0 3 0x100083 ttyin getty
21610 210681 0 0 3 0x14200 bored sosplice
50236 98392 33102 0 3 0x82 thrsleep syz-fuzzer
50236 84111 33102 0 3 0x4000082 nanosleep syz-fuzzer
50236 200233 33102 0 3 0x4000082 thrsleep syz-fuzzer
50236 296210 33102 0 3 0x4000082 thrsleep syz-fuzzer
50236 431163 33102 0 3 0x4000082 thrsleep syz-fuzzer
50236 75096 33102 0 3 0x4000082 kqread syz-fuzzer
50236 265426 33102 0 3 0x4000082 thrsleep syz-fuzzer
33102 32900 54031 0 3 0x10008a pause ksh
54031 310818 67206 0 3 0x92 select sshd
67206 50524 1 0 3 0x80 select sshd
97251 502287 7224 73 3 0x100090 kqread syslogd
7224 96787 1 0 3 0x100082 netio syslogd
95338 263230 0 0 2 0x14200 zerothread
59544 67656 0 0 3 0x14200 aiodoned aiodoned
38099 291200 0 0 3 0x14200 syncer update
17801 445396 0 0 3 0x14200 cleaner cleaner
63721 156695 0 0 3 0x14200 reaper reaper
87478 204530 0 0 3 0x14200 pgdaemon pagedaemon
47286 74919 0 0 3 0x14200 bored crynlk
63155 199433 0 0 3 0x14200 bored crypto
72811 330516 0 0 3 0x40014200 acpi0 acpi0
55725 100070 0 0 3 0x14200 bored softnet
69221 21192 0 0 3 0x14200 bored systqmp
78598 60 0 0 3 0x14200 bored systq
56343 311399 0 0 3 0x40014200 bored softclock
77838 502300 0 0 3 0x40014200 idle0
36187 317675 0 0 3 0x14200 bored smr
1 446188 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 9600 6573K 7467K 78643K 37101 0 0
pcb 13 8K 8K 78643K 1496 0 0
rtable 109 12K 13K 78643K 2782 0 0
ifaddr 79 22K 27K 78643K 1149 0 0
counters 19 16K 16K 78643K 19 0 0
ioctlops 0 0K 2K 78643K 622 0 0
iov 0 0K 32K 78643K 1245 0 0
mount 1 1K 1K 78643K 1 0 0
vnodes 1204 76K 77K 78643K 11649 0 0
UFS quota 1 32K 32K 78643K 1 0 0
UFS mount 5 36K 36K 78643K 5 0 0
shm 2 1K 5K 78643K 151 0 0
VM map 2 0K 0K 78643K 26 0 0
sem 12 0K 1K 78643K 1339 0 0
dirhash 12 2K 2K 78643K 12 0 0
ACPI 1793 195K 288K 78643K 12645 0 0
file desc 5 13K 25K 78643K 11706 0 0
sigio 0 0K 0K 78643K 256 0 0
proc 45 30K 63K 78643K 2876 0 0
subproc 32 2K 2K 78643K 720 0 0
NFS srvsock 1 0K 0K 78643K 1 0 0
NFS daemon 1 16K 16K 78643K 1 0 0
ip_moptions 0 0K 0K 78643K 1241 0 0
in_multi 24 1K 2K 78643K 815 0 0
ether_multi 1 0K 0K 78643K 48 0 0
mrt 0 0K 0K 78643K 57 0 0
ISOFS mount 1 32K 32K 78643K 1 0 0
MSDOSFS mount 1 16K 16K 78643K 1 0 0
ttys 198 874K 874K 78643K 198 0 0
exec 0 0K 1K 78643K 1753 0 0
pfkey data 0 0K 4K 78643K 4 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 116 22K 40K 78643K 28981 0 0
UVM aobj 130 4K 4K 78643K 141 0 0
memdesc 1 4K 4K 78643K 1 0 0
crypto data 1 1K 1K 78643K 1 0 0
ip6_options 0 0K 1K 78643K 1417 0 0
NDP 21 0K 1K 78643K 363 0 0
temp 218 3532K 4172K 78643K 176144 0 0
kqueue 0 0K 0K 78643K 114 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 64 279 0 275 1 0 1 1 0
8 0
rtpcb 80 699 0 699 31 30 1 1 0
8 1
rtentry 112 872 0 833 2 0 2 2 0
8 0
unpcb 120 7795 0 7773 32 30 2 3 0
8 1
syncache 264 4 0 4 1 1 0 1 0
8 0
sackhl 24 3 0 3 3 3 0 1 0
8 0
tcpqe 32 7156 0 7156 1 1 0 1 0
8 0
tcpcb 544 5991 0 5987 43 41 2 3 0
8 1
ipq 40 16 0 16 6 6 0 1 0
8 0
ipqe 40 41 0 41 6 6 0 1 0
8 0
inpcb 280 24047 0 24041 57 55 2 5 0
8 1
rttmr 72 13 0 13 11 11 0 1 0
8 0
nd6 48 82 0 80 2 1 1 1 0
8 0
pkpcb 40 60 0 60 25 25 0 1 0
8 0
swfcl 56 5 0 0 1 0 1 1 0
8 0
ppxss 1128 164 0 164 40 40 0 1 0
8 0
art_heap8 4096 1 0 0 1 0 1 1 0
8 0
art_heap4 256 2341 0 2138 33 17 16 17 0
8 1
art_table 32 2342 0 2138 3 1 2 3 0
8 0
art_node 16 662 0 627 1 0 1 1 0
8 0
sysvmsgpl 40 47 0 32 1 0 1 1 0
8 0
semupl 112 2 0 2 1 1 0 1 0
8 0
semapl 112 1333 0 1323 1 0 1 1 0
8 0
shmpl 112 139 0 11 4 0 4 4 0
8 0
dirhash 1024 17 0 0 3 0 3 3 0
8 0
dino1pl 128 19069 0 17667 46 0 46 46 0
8 0
ffsino 240 19069 0 17667 83 0 83 83 0
8 0
nchpl 144 36351 0 34738 63 1 62 62 0
8 0
uvmvnodes 72 8301 0 0 151 0 151 151 0
8 0
vnodes 208 8301 0 0 437 0 437 437 0
8 0
namei 1024 122528 0 122528 9 8 1 1 0
8 1
vmpool 520 24 0 24 9 9 0 1 0
8 0
scsiplug 64 17 0 17 11 11 0 1 0
8 0
scxspl 192 111664 0 111664 41 40 1 7 0
8 1
plimitpl 152 994 0 988 1 0 1 1 0
8 0
sigapl 432 11760 0 11749 2 0 2 2 0
8 0
futexpl 56 289751 0 289751 10 9 1 1 0
8 1
knotepl 112 2951 0 2932 9 8 1 3 0
8 0
kqueuepl 104 9382 0 9380 1 0 1 1 0
8 0
pipepl 112 5992 0 5973 19 18 1 2 0
8 0
fdescpl 424 11761 0 11749 2 0 2 2 0
8 0
filepl 120 102964 0 102878 47 43 4 7 0
8 1
lockfpl 104 3601 0 3601 12 11 1 1 0
8 1
lockfspl 48 1212 0 1212 12 11 1 1 0
8 1
sessionpl 112 60 0 52 1 0 1 1 0
8 0
pgrppl 48 173 0 165 1 0 1 1 0
8 0
ucredpl 96 13851 0 13844 1 0 1 1 0
8 0
zombiepl 144 11750 0 11750 3 2 1 1 0
8 1
processpl 864 11778 0 11750 4 0 4 4 0
8 0
procpl 632 26271 0 26236 4 0 4 4 0
8 0
sosppl 128 160 0 160 39 39 0 1 0
8 0
sockpl 384 32745 0 32718 112 105 7 11 0
8 3
mcl64k 65536 2850 0 2850 345 345 0 129 0
8 0
mcl16k 16384 68 0 68 38 38 0 1 0
8 0
mcl12k 12288 199 0 199 34 33 1 1 0
8 1
mcl9k 9216 149 0 149 45 44 1 1 0
8 1
mcl8k 8192 331 0 331 31 30 1 1 0
8 1
mcl4k 4096 995 0 995 14 13 1 1 0
8 1
mcl2k2 2112 97 0 97 33 32 1 1 0
8 1
mcl2k 2048 74061 0 74017 32 26 6 14 0
8 0
mtagpl 80 310 0 308 8 7 1 1 0
8 0
mbufpl 256 197576 0 197486 171 162 9 70 0
8 0
bufpl 256 35974 0 27647 521 0 521 521 0
8 0
anonpl 16 1100776 0 1089539 339 276 63 78 0
62 0
amapchunkpl 152 52329 0 52231 112 107 5 18 0
158 0
amappl16 192 61162 0 60348 385 343 42 56 0
8 1
amappl15 184 2612 0 2611 8 7 1 1 0
8 0
amappl14 176 2904 0 2900 1 0 1 1 0
8 0
amappl13 168 1073 0 1073 8 8 0 1 0
8 0
amappl12 160 939 0 933 1 0 1 1 0
8 0
amappl11 152 729 0 725 1 0 1 1 0
8 0
amappl10 144 1582 0 1579 1 0 1 1 0
8 0
amappl9 136 2672 0 2664 1 0 1 1 0
8 0
amappl8 128 2237 0 2196 2 0 2 2 0
8 0
amappl7 120 1797 0 1789 1 0 1 1 0
8 0
amappl6 112 676 0 663 1 0 1 1 0
8 0
amappl5 104 1426 0 1417 1 0 1 1 0
8 0
amappl4 96 10485 0 10461 1 0 1 1 0
8 0
amappl3 88 5064 0 5058 1 0 1 1 0
8 0
amappl2 80 93605 0 93546 3 1 2 3 0
8 0
amappl1 72 219602 0 219220 26 16 10 20 0
8 0
amappl 80 27136 0 27105 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
dma64 64 259 0 259 1 1 0 1 0
8 0
dma32 32 7 0 7 1 1 0 1 0
8 0
dma16 16 17 0 17 1 1 0 1 0
8 0
aobjpl 64 140 0 11 3 0 3 3 0
8 0
uaddrrnd 24 11785 0 11749 1 0 1 1 0
8 0
uaddrbest 32 2 0 0 1 0 1 1 0
8 0
uaddr 24 11785 0 11749 1 0 1 1 0
8 0
vmmpekpl 168 68071 0 68043 2 0 2 2 0
8 0
vmmpepl 168 1415288 0 1413487 687 577 110 110 0 357
22
vmsppl 272 11760 0 11749 2 1 1 2 0
8 0
pdppl 4096 23576 0 23546 12 7 5 6 0
8 1
pvpl 32 3138919 0 3124656 865 716 149 290 0
265 0
pmappl 200 11784 0 11773 1 0 1 1 0
8 0
extentpl 40 41 0 26 1 0 1 1 0
8 0
phpool 112 1340 0 690 21 1 20 20 0
8 0
---
This bug is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this bug report. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
Anton Lindqvist
Sep 27, 2019, 2:52:18 AM9/27/19
to syzbot, syzkaller-o...@googlegroups.com
#syz dup: panic: attempt to execute user address
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