panic: receive 3: so ADDR, so_type 3, m ADDR, m_type 0
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syzbot
Nov 13, 2019, 2:09:11 AM11/13/19
to syzkaller-o...@googlegroups.com
Hello,
syzbot found the following crash on:
HEAD commit: 16e245ae refactor the nc pool loop to not shut down the so..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=10ffbd52e00000
kernel config: https://syzkaller.appspot.com/x/.config?x=26ca0a9c07f16a3a
dashboard link: https://syzkaller.appspot.com/bug?extid=5f608736d5087aa460c7
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+5f6087...@syzkaller.appspotmail.com
panic: receive 3: so 0xfffffd806f6d5300, so_type 3, m 0xfffffd8072d09900,
m_type 0
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*204171 38689 0 0 0 1K dhclient
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic() at panic+0x15c sys/kern/subr_prf.c:207
soreceive(fffffd806f6d5300,0,ffff800020aa55b8,0,0,ffff800020aa54c4) at
soreceive+0x1727
soo_read(fffffd80773ef1c8,ffff800020aa55b8,0) at soo_read+0x53
sys/kern/sys_socket.c:70
dofilereadv(ffff800020a5ec60,6,ffff800020aa55b8,0,ffff800020aa56a0) at
dofilereadv+0x1a2 sys/kern/sys_generic.c:236
sys_read(ffff800020a5ec60,ffff800020aa5650,ffff800020aa56a0) at
sys_read+0x83 sys/kern/sys_generic.c:156
syscall(ffff800020aa5720) at syscall+0x4a4 mi_syscall
sys/sys/syscall_mi.h:92 [inline]
syscall(ffff800020aa5720) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7fffff8980, count: 7
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{1}>
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
receive 3: so 0xfffffd806f6d5300, so_type 3, m 0xfffffd8072d09900, m_type 0
ddb{1}> 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
soreceive(fffffd806f6d5300,0,ffff800020aa55b8,0,0,ffff800020aa54c4) at
soreceive+0x1727
soo_read(fffffd80773ef1c8,ffff800020aa55b8,0) at soo_read+0x53
sys/kern/sys_socket.c:70
dofilereadv(ffff800020a5ec60,6,ffff800020aa55b8,0,ffff800020aa56a0) at
dofilereadv+0x1a2 sys/kern/sys_generic.c:236
sys_read(ffff800020a5ec60,ffff800020aa5650,ffff800020aa56a0) at
sys_read+0x83 sys/kern/sys_generic.c:156
syscall(ffff800020aa5720) at syscall+0x4a4 mi_syscall
sys/sys/syscall_mi.h:92 [inline]
syscall(ffff800020aa5720) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7fffff8980, count: -8
ddb{1}> show registers
rdi 0
rsi 0x1
rbp 0xffff800020aa5300
rbx 0xffff800020aa53b0
rdx 0xffff800020a5ec60
rcx 0
rax 0
r8 0xffffffff820f047f kprintf+0x16f
r9 0x1
r10 0x25
r11 0xb19a8f79105858f0
r12 0x3000000008
r13 0xffff800020aa5310
r14 0x100
r15 0x1
rip 0xffffffff812479b8 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff800020aa52f0
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb{1}> show proc
PROC (dhclient) pid=204171 stat=onproc
flags process=0 proc=0
pri=50, usrpri=50, nice=20
forw=0xffffffffffffffff, list=0xffff800020a5e4f8,0xffff800020a5f160
process=0xffff800020a8a390 user=0xffff800020aa0000,
vmspace=0xfffffd807f00b2e0
estcpu=0, cpticks=1, pctcpu=0.0
user=0, sys=1, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
54937 172825 33080 0 3 0x82 nanosleep syz-executor.1
58420 425079 33080 0 3 0x82 nanosleep syz-executor.0
69725 321890 1 0 3 0x100083 ttyin getty
39854 349124 0 0 3 0x14200 acct acct
61379 50164 0 0 3 0x14200 bored sosplice
33080 11701 89703 0 3 0x82 thrsleep syz-fuzzer
33080 62496 89703 0 3 0x4000082 thrsleep syz-fuzzer
33080 1510 89703 0 3 0x4000082 thrsleep syz-fuzzer
33080 347536 89703 0 3 0x4000082 thrsleep syz-fuzzer
33080 364675 89703 0 3 0x4000082 thrsleep syz-fuzzer
33080 514954 89703 0 3 0x4000082 thrsleep syz-fuzzer
33080 506782 89703 0 3 0x4000082 thrsleep syz-fuzzer
33080 329398 89703 0 3 0x4000082 thrsleep syz-fuzzer
33080 256851 89703 0 3 0x4000082 kqread syz-fuzzer
33080 429739 89703 0 3 0x4000082 thrsleep syz-fuzzer
33080 424362 89703 0 3 0x4000082 thrsleep syz-fuzzer
89703 435193 88912 0 3 0x10008a pause ksh
88912 474699 75204 0 3 0x92 select sshd
75204 208524 1 0 3 0x80 select sshd
81392 422960 25688 74 3 0x100092 bpf pflogd
25688 101045 1 0 3 0x80 netio pflogd
66897 468891 65697 73 3 0x100090 kqread syslogd
65697 503799 1 0 3 0x100082 netio syslogd
32471 493925 1 77 3 0x100090 poll dhclient
*38689 204171 1 0 7 0 dhclient
98065 300508 0 0 3 0x14200 pgzero zerothread
19419 117041 0 0 3 0x14200 aiodoned aiodoned
9130 467019 0 0 3 0x14200 syncer update
67954 261513 0 0 3 0x14200 cleaner cleaner
72412 189521 0 0 3 0x14200 reaper reaper
8887 352704 0 0 3 0x14200 pgdaemon pagedaemon
3231 432470 0 0 3 0x14200 bored crynlk
68872 415984 0 0 3 0x14200 bored crypto
72415 208315 0 0 3 0x40014200 acpi0 acpi0
21563 103735 0 0 3 0x40014200 idle1
51764 521083 0 0 3 0x14200 bored softnet
36858 260925 0 0 3 0x14200 bored systqmp
22513 62911 0 0 3 0x14200 bored systq
47354 344215 0 0 3 0x40014200 bored softclock
15311 28605 0 0 3 0x40014200 idle0
80247 393521 0 0 3 0x14200 bored smr
1 362625 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
Process 38689 (dhclient) thread 0xffff800020a5ec60 (204171)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82634088)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1163
#1 solock+0x66 sys/kern/uipc_socket2.c:292
#2 soreceive+0x114 sys/kern/uipc_socket.c:706
#3 soo_read+0x53 sys/kern/sys_socket.c:70
#4 dofilereadv+0x1a2 sys/kern/sys_generic.c:236
#5 sys_read+0x83 sys/kern/sys_generic.c:156
#6 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline]
#6 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
#7 Xsyscall+0x128
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim
devbuf 9594 7226K 10970K 78643K 61413 0 0
pcb 13 10K 12K 78643K 1921 0 0
rtable 118 13K 13K 78643K 3375 0 0
ifaddr 302 34K 35K 78643K 1190 0 0
counters 39 33K 33K 78643K 39 0 0
ioctlops 0 0K 4K 78643K 1750 0 0
iov 0 0K 24K 78643K 3194 0 0
mount 1 1K 1K 78643K 1 0 0
vnodes 1222 77K 78K 78643K 18477 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 69 0 0
VM map 50 25K 25K 78643K 77 0 0
sem 12 1K 1K 78643K 244 0 0
dirhash 12 2K 2K 78643K 12 0 0
ACPI 1808 196K 290K 78643K 12765 0 0
file desc 5 13K 25K 78643K 9308 0 0
sigio 0 0K 0K 78643K 96 0 0
proc 62 63K 95K 78643K 2639 0 0
subproc 32 2K 2K 78643K 731 0 0
NFS srvsock 1 0K 0K 78643K 1 0 0
NFS daemon 1 16K 16K 78643K 1 0 0
ip_moptions 0 0K 1K 78643K 634 0 0
in_multi 80 4K 4K 78643K 717 0 0
ether_multi 1 0K 0K 78643K 59 0 0
mrt 0 0K 0K 78643K 25 0 0
ISOFS mount 1 32K 32K 78643K 1 0 0
MSDOSFS mount 1 16K 16K 78643K 1 0 0
ttys 114 503K 503K 78643K 114 0 0
exec 0 0K 1K 78643K 1131 0 0
pfkey data 0 0K 0K 78643K 2 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 230 400K 401K 78643K 28757 0 0
UVM aobj 130 5K 5K 78643K 133 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 1802 0 0
NDP 22 0K 0K 78643K 294 0 0
temp 178 3556K 4195K 78643K 179724 0 0
kqueue 0 0K 0K 78643K 58 0 0
SYN cache 2 16K 16K 78643K 2 0 0
ddb{1}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg
Idle
arp 64 136 0 129 1 0 1 1 0
8 0
plcache 128 20 0 0 1 0 1 1 0
8 0
rtpcb 80 400 0 398 1 0 1 1 0
8 0
rtentry 112 611 0 568 2 0 2 2 0
8 0
unpcb 120 25335 0 25322 21 20 1 2 0
8 0
syncache 264 22 0 22 11 11 0 1 0
8 0
tcpqe 32 206 0 206 5 5 0 1 0
8 0
tcpcb 544 4323 0 4318 64 62 2 14 0
8 1
inpcb 280 13108 0 13098 60 54 6 9 0
8 5
rttmr 72 6 0 6 6 6 0 1 0
8 0
ip6q 72 1 0 1 1 1 0 1 0
8 0
ip6af 40 1 0 1 1 1 0 1 0
8 0
nd6 48 89 0 86 2 1 1 1 0
8 0
pkpcb 40 40 0 40 13 13 0 1 0
8 0
ppxss 1128 121 0 121 21 20 1 1 0
8 1
pffrag 232 120 0 120 19 19 0 1 0
482 0
pffrnode 88 120 0 120 19 19 0 1 0
8 0
pffrent 40 4066 0 4066 19 19 0 1 0
8 0
pfosfp 40 846 0 423 5 0 5 5 0
8 0
pfosfpen 112 1428 0 714 21 0 21 21 0
8 0
pfstitem 24 441 0 368 1 0 1 1 0
8 0
pfstkey 112 441 0 368 4 1 3 3 0
8 0
pfstate 328 441 0 368 9 2 7 7 0
8 0
pfrule 1360 21 0 16 2 1 1 2 0
8 0
art_heap8 4096 12 0 11 5 4 1 3 0
8 0
art_heap4 256 2564 0 2355 35 20 15 16 0
8 0
art_table 32 2576 0 2366 3 1 2 3 0
8 0
art_node 16 610 0 570 1 0 1 1 0
8 0
sysvmsgpl 40 36 0 36 1 1 0 1 0
8 0
semupl 112 4 0 4 1 1 0 1 0
8 0
semapl 112 240 0 230 1 0 1 1 0
8 0
shmpl 112 131 0 3 4 0 4 4 0
8 0
dirhash 1024 17 0 0 3 0 3 3 0
8 0
dino1pl 128 21584 0 20136 47 0 47 47 0
8 0
ffsino 272 21584 0 20136 97 0 97 97 0
8 0
nchpl 144 36060 0 35559 61 41 20 61 0
8 0
uvmvnodes 72 6451 0 0 118 0 118 118 0
8 0
vnodes 208 6451 0 0 340 0 340 340 0
8 0
namei 1024 140820 0 140820 3 2 1 1 0
8 1
percpumem 16 30 0 0 1 0 1 1 0
8 0
vcpupl 1984 50 0 2 6 0 6 6 0
8 0
vmpool 552 75 0 27 5 1 4 4 0
8 0
scsiplug 64 3 0 3 2 2 0 1 0
8 0
scxspl 192 102991 0 102991 43 42 1 7 0
8 1
plimitpl 152 396 0 388 1 0 1 1 0
8 0
sigapl 432 9387 0 9372 3 1 2 3 0
8 0
futexpl 56 350946 0 350946 2 1 1 1 0
8 1
knotepl 112 1224 0 1205 5 4 1 3 0
8 0
kqueuepl 104 2551 0 2549 16 15 1 4 0
8 0
pipepl 160 4126 0 4107 17 16 1 2 0
8 0
fdescpl 488 9388 0 9372 3 0 3 3 0
8 0
filepl 152 116036 0 115935 69 62 7 14 0
8 3
lockfpl 104 4036 0 4035 1 0 1 1 0
8 0
lockfspl 48 1603 0 1602 1 0 1 1 0
8 0
sessionpl 112 63 0 52 1 0 1 1 0
8 0
pgrppl 48 96 0 85 1 0 1 1 0
8 0
ucredpl 96 13087 0 13077 1 0 1 1 0
8 0
zombiepl 144 9375 0 9373 2 1 1 1 0
8 0
processpl 896 9407 0 9373 4 0 4 4 0
8 0
procpl 632 25723 0 25679 8 3 5 5 0
8 1
srpgc 64 68 0 68 21 21 0 1 0
8 0
sosppl 128 201 0 201 21 20 1 1 0
8 1
sockpl 384 39004 0 38981 97 87 10 14 0
8 6
mcl64k 65536 332 0 0 38 9 29 34 0
8 0
mcl16k 16384 29 0 0 4 1 3 3 0
8 0
mcl12k 12288 25 0 0 2 0 2 2 0
8 0
mcl9k 9216 25 0 0 2 0 2 2 0
8 0
mcl8k 8192 49 0 0 5 2 3 3 0
8 0
mcl4k 4096 17 0 0 3 0 3 3 0
8 0
mcl2k2 2112 15 0 0 1 0 1 1 0
8 0
mcl2k 2048 311 0 0 26 14 12 26 0
8 0
mtagpl 80 140 0 0 2 1 1 2 0
8 0
mbufpl 256 891 0 0 34 0 34 34 0
8 0
bufpl 256 32135 0 24790 460 0 460 460 0
8 0
anonpl 16 952804 0 929197 233 132 101 109 0
124 4
amapchunkpl 152 55533 0 55348 93 81 12 21 0
158 2
amappl16 192 45385 0 44074 257 184 73 77 0
8 7
amappl15 184 1852 0 1852 5 5 0 1 0
8 0
amappl14 176 2211 0 2202 1 0 1 1 0
8 0
amappl13 168 1336 0 1336 6 6 0 1 0
8 0
amappl12 160 1387 0 1386 2 1 1 1 0
8 0
amappl11 152 604 0 588 1 0 1 1 0
8 0
amappl10 144 1754 0 1748 1 0 1 1 0
8 0
amappl9 136 1692 0 1689 1 0 1 1 0
8 0
amappl8 128 1287 0 1216 4 1 3 3 0
8 0
amappl7 120 1949 0 1939 1 0 1 1 0
8 0
amappl6 112 525 0 512 1 0 1 1 0
8 0
amappl5 104 1876 0 1862 1 0 1 1 0
8 0
amappl4 96 9745 0 9710 1 0 1 1 0
8 0
amappl3 88 5179 0 5163 1 0 1 1 0
8 0
amappl2 80 73195 0 73116 3 1 2 3 0
8 0
amappl1 72 193924 0 193483 26 16 10 20 0
8 0
amappl 80 26788 0 26715 2 0 2 2 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 17 0 17 1 1 0 1 0
8 0
aobjpl 64 132 0 3 3 0 3 3 0
8 0
uaddrrnd 24 9463 0 9372 1 0 1 1 0
8 0
uaddrbest 32 2 0 0 1 0 1 1 0
8 0
uaddr 24 9463 0 9372 1 0 1 1 0
8 0
vmmpekpl 168 66603 0 66561 3 0 3 3 0
8 0
vmmpepl 168 1163756 0 1161103 418 258 160 165 0 357
37
vmsppl 368 9387 0 9372 2 0 2 2 0
8 0
pdppl 4096 18933 0 18846 14 2 12 12 0
8 0
pvpl 32 2598086 0 2572917 462 234 228 247 0 265
19
pmappl 232 9462 0 9399 5 1 4 4 0
8 0
extentpl 40 41 0 26 1 0 1 1 0
8 0
phpool 112 797 0 119 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: 16e245ae refactor the nc pool loop to not shut down the so..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=10ffbd52e00000
kernel config: https://syzkaller.appspot.com/x/.config?x=26ca0a9c07f16a3a
dashboard link: https://syzkaller.appspot.com/bug?extid=5f608736d5087aa460c7
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+5f6087...@syzkaller.appspotmail.com
panic: receive 3: so 0xfffffd806f6d5300, so_type 3, m 0xfffffd8072d09900,
m_type 0
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*204171 38689 0 0 0 1K dhclient
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic() at panic+0x15c sys/kern/subr_prf.c:207
soreceive(fffffd806f6d5300,0,ffff800020aa55b8,0,0,ffff800020aa54c4) at
soreceive+0x1727
soo_read(fffffd80773ef1c8,ffff800020aa55b8,0) at soo_read+0x53
sys/kern/sys_socket.c:70
dofilereadv(ffff800020a5ec60,6,ffff800020aa55b8,0,ffff800020aa56a0) at
dofilereadv+0x1a2 sys/kern/sys_generic.c:236
sys_read(ffff800020a5ec60,ffff800020aa5650,ffff800020aa56a0) at
sys_read+0x83 sys/kern/sys_generic.c:156
syscall(ffff800020aa5720) at syscall+0x4a4 mi_syscall
sys/sys/syscall_mi.h:92 [inline]
syscall(ffff800020aa5720) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7fffff8980, count: 7
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{1}>
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
receive 3: so 0xfffffd806f6d5300, so_type 3, m 0xfffffd8072d09900, m_type 0
ddb{1}> 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
soreceive(fffffd806f6d5300,0,ffff800020aa55b8,0,0,ffff800020aa54c4) at
soreceive+0x1727
soo_read(fffffd80773ef1c8,ffff800020aa55b8,0) at soo_read+0x53
sys/kern/sys_socket.c:70
dofilereadv(ffff800020a5ec60,6,ffff800020aa55b8,0,ffff800020aa56a0) at
dofilereadv+0x1a2 sys/kern/sys_generic.c:236
sys_read(ffff800020a5ec60,ffff800020aa5650,ffff800020aa56a0) at
sys_read+0x83 sys/kern/sys_generic.c:156
syscall(ffff800020aa5720) at syscall+0x4a4 mi_syscall
sys/sys/syscall_mi.h:92 [inline]
syscall(ffff800020aa5720) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7fffff8980, count: -8
ddb{1}> show registers
rdi 0
rsi 0x1
rbp 0xffff800020aa5300
rbx 0xffff800020aa53b0
rdx 0xffff800020a5ec60
rcx 0
rax 0
r8 0xffffffff820f047f kprintf+0x16f
r9 0x1
r10 0x25
r11 0xb19a8f79105858f0
r12 0x3000000008
r13 0xffff800020aa5310
r14 0x100
r15 0x1
rip 0xffffffff812479b8 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff800020aa52f0
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb{1}> show proc
PROC (dhclient) pid=204171 stat=onproc
flags process=0 proc=0
pri=50, usrpri=50, nice=20
forw=0xffffffffffffffff, list=0xffff800020a5e4f8,0xffff800020a5f160
process=0xffff800020a8a390 user=0xffff800020aa0000,
vmspace=0xfffffd807f00b2e0
estcpu=0, cpticks=1, pctcpu=0.0
user=0, sys=1, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
54937 172825 33080 0 3 0x82 nanosleep syz-executor.1
58420 425079 33080 0 3 0x82 nanosleep syz-executor.0
69725 321890 1 0 3 0x100083 ttyin getty
39854 349124 0 0 3 0x14200 acct acct
61379 50164 0 0 3 0x14200 bored sosplice
33080 11701 89703 0 3 0x82 thrsleep syz-fuzzer
33080 62496 89703 0 3 0x4000082 thrsleep syz-fuzzer
33080 1510 89703 0 3 0x4000082 thrsleep syz-fuzzer
33080 347536 89703 0 3 0x4000082 thrsleep syz-fuzzer
33080 364675 89703 0 3 0x4000082 thrsleep syz-fuzzer
33080 514954 89703 0 3 0x4000082 thrsleep syz-fuzzer
33080 506782 89703 0 3 0x4000082 thrsleep syz-fuzzer
33080 329398 89703 0 3 0x4000082 thrsleep syz-fuzzer
33080 256851 89703 0 3 0x4000082 kqread syz-fuzzer
33080 429739 89703 0 3 0x4000082 thrsleep syz-fuzzer
33080 424362 89703 0 3 0x4000082 thrsleep syz-fuzzer
89703 435193 88912 0 3 0x10008a pause ksh
88912 474699 75204 0 3 0x92 select sshd
75204 208524 1 0 3 0x80 select sshd
81392 422960 25688 74 3 0x100092 bpf pflogd
25688 101045 1 0 3 0x80 netio pflogd
66897 468891 65697 73 3 0x100090 kqread syslogd
65697 503799 1 0 3 0x100082 netio syslogd
32471 493925 1 77 3 0x100090 poll dhclient
*38689 204171 1 0 7 0 dhclient
98065 300508 0 0 3 0x14200 pgzero zerothread
19419 117041 0 0 3 0x14200 aiodoned aiodoned
9130 467019 0 0 3 0x14200 syncer update
67954 261513 0 0 3 0x14200 cleaner cleaner
72412 189521 0 0 3 0x14200 reaper reaper
8887 352704 0 0 3 0x14200 pgdaemon pagedaemon
3231 432470 0 0 3 0x14200 bored crynlk
68872 415984 0 0 3 0x14200 bored crypto
72415 208315 0 0 3 0x40014200 acpi0 acpi0
21563 103735 0 0 3 0x40014200 idle1
51764 521083 0 0 3 0x14200 bored softnet
36858 260925 0 0 3 0x14200 bored systqmp
22513 62911 0 0 3 0x14200 bored systq
47354 344215 0 0 3 0x40014200 bored softclock
15311 28605 0 0 3 0x40014200 idle0
80247 393521 0 0 3 0x14200 bored smr
1 362625 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
Process 38689 (dhclient) thread 0xffff800020a5ec60 (204171)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82634088)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1163
#1 solock+0x66 sys/kern/uipc_socket2.c:292
#2 soreceive+0x114 sys/kern/uipc_socket.c:706
#3 soo_read+0x53 sys/kern/sys_socket.c:70
#4 dofilereadv+0x1a2 sys/kern/sys_generic.c:236
#5 sys_read+0x83 sys/kern/sys_generic.c:156
#6 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline]
#6 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
#7 Xsyscall+0x128
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim
devbuf 9594 7226K 10970K 78643K 61413 0 0
pcb 13 10K 12K 78643K 1921 0 0
rtable 118 13K 13K 78643K 3375 0 0
ifaddr 302 34K 35K 78643K 1190 0 0
counters 39 33K 33K 78643K 39 0 0
ioctlops 0 0K 4K 78643K 1750 0 0
iov 0 0K 24K 78643K 3194 0 0
mount 1 1K 1K 78643K 1 0 0
vnodes 1222 77K 78K 78643K 18477 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 69 0 0
VM map 50 25K 25K 78643K 77 0 0
sem 12 1K 1K 78643K 244 0 0
dirhash 12 2K 2K 78643K 12 0 0
ACPI 1808 196K 290K 78643K 12765 0 0
file desc 5 13K 25K 78643K 9308 0 0
sigio 0 0K 0K 78643K 96 0 0
proc 62 63K 95K 78643K 2639 0 0
subproc 32 2K 2K 78643K 731 0 0
NFS srvsock 1 0K 0K 78643K 1 0 0
NFS daemon 1 16K 16K 78643K 1 0 0
ip_moptions 0 0K 1K 78643K 634 0 0
in_multi 80 4K 4K 78643K 717 0 0
ether_multi 1 0K 0K 78643K 59 0 0
mrt 0 0K 0K 78643K 25 0 0
ISOFS mount 1 32K 32K 78643K 1 0 0
MSDOSFS mount 1 16K 16K 78643K 1 0 0
ttys 114 503K 503K 78643K 114 0 0
exec 0 0K 1K 78643K 1131 0 0
pfkey data 0 0K 0K 78643K 2 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 230 400K 401K 78643K 28757 0 0
UVM aobj 130 5K 5K 78643K 133 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 1802 0 0
NDP 22 0K 0K 78643K 294 0 0
temp 178 3556K 4195K 78643K 179724 0 0
kqueue 0 0K 0K 78643K 58 0 0
SYN cache 2 16K 16K 78643K 2 0 0
ddb{1}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg
Idle
arp 64 136 0 129 1 0 1 1 0
8 0
plcache 128 20 0 0 1 0 1 1 0
8 0
rtpcb 80 400 0 398 1 0 1 1 0
8 0
rtentry 112 611 0 568 2 0 2 2 0
8 0
unpcb 120 25335 0 25322 21 20 1 2 0
8 0
syncache 264 22 0 22 11 11 0 1 0
8 0
tcpqe 32 206 0 206 5 5 0 1 0
8 0
tcpcb 544 4323 0 4318 64 62 2 14 0
8 1
inpcb 280 13108 0 13098 60 54 6 9 0
8 5
rttmr 72 6 0 6 6 6 0 1 0
8 0
ip6q 72 1 0 1 1 1 0 1 0
8 0
ip6af 40 1 0 1 1 1 0 1 0
8 0
nd6 48 89 0 86 2 1 1 1 0
8 0
pkpcb 40 40 0 40 13 13 0 1 0
8 0
ppxss 1128 121 0 121 21 20 1 1 0
8 1
pffrag 232 120 0 120 19 19 0 1 0
482 0
pffrnode 88 120 0 120 19 19 0 1 0
8 0
pffrent 40 4066 0 4066 19 19 0 1 0
8 0
pfosfp 40 846 0 423 5 0 5 5 0
8 0
pfosfpen 112 1428 0 714 21 0 21 21 0
8 0
pfstitem 24 441 0 368 1 0 1 1 0
8 0
pfstkey 112 441 0 368 4 1 3 3 0
8 0
pfstate 328 441 0 368 9 2 7 7 0
8 0
pfrule 1360 21 0 16 2 1 1 2 0
8 0
art_heap8 4096 12 0 11 5 4 1 3 0
8 0
art_heap4 256 2564 0 2355 35 20 15 16 0
8 0
art_table 32 2576 0 2366 3 1 2 3 0
8 0
art_node 16 610 0 570 1 0 1 1 0
8 0
sysvmsgpl 40 36 0 36 1 1 0 1 0
8 0
semupl 112 4 0 4 1 1 0 1 0
8 0
semapl 112 240 0 230 1 0 1 1 0
8 0
shmpl 112 131 0 3 4 0 4 4 0
8 0
dirhash 1024 17 0 0 3 0 3 3 0
8 0
dino1pl 128 21584 0 20136 47 0 47 47 0
8 0
ffsino 272 21584 0 20136 97 0 97 97 0
8 0
nchpl 144 36060 0 35559 61 41 20 61 0
8 0
uvmvnodes 72 6451 0 0 118 0 118 118 0
8 0
vnodes 208 6451 0 0 340 0 340 340 0
8 0
namei 1024 140820 0 140820 3 2 1 1 0
8 1
percpumem 16 30 0 0 1 0 1 1 0
8 0
vcpupl 1984 50 0 2 6 0 6 6 0
8 0
vmpool 552 75 0 27 5 1 4 4 0
8 0
scsiplug 64 3 0 3 2 2 0 1 0
8 0
scxspl 192 102991 0 102991 43 42 1 7 0
8 1
plimitpl 152 396 0 388 1 0 1 1 0
8 0
sigapl 432 9387 0 9372 3 1 2 3 0
8 0
futexpl 56 350946 0 350946 2 1 1 1 0
8 1
knotepl 112 1224 0 1205 5 4 1 3 0
8 0
kqueuepl 104 2551 0 2549 16 15 1 4 0
8 0
pipepl 160 4126 0 4107 17 16 1 2 0
8 0
fdescpl 488 9388 0 9372 3 0 3 3 0
8 0
filepl 152 116036 0 115935 69 62 7 14 0
8 3
lockfpl 104 4036 0 4035 1 0 1 1 0
8 0
lockfspl 48 1603 0 1602 1 0 1 1 0
8 0
sessionpl 112 63 0 52 1 0 1 1 0
8 0
pgrppl 48 96 0 85 1 0 1 1 0
8 0
ucredpl 96 13087 0 13077 1 0 1 1 0
8 0
zombiepl 144 9375 0 9373 2 1 1 1 0
8 0
processpl 896 9407 0 9373 4 0 4 4 0
8 0
procpl 632 25723 0 25679 8 3 5 5 0
8 1
srpgc 64 68 0 68 21 21 0 1 0
8 0
sosppl 128 201 0 201 21 20 1 1 0
8 1
sockpl 384 39004 0 38981 97 87 10 14 0
8 6
mcl64k 65536 332 0 0 38 9 29 34 0
8 0
mcl16k 16384 29 0 0 4 1 3 3 0
8 0
mcl12k 12288 25 0 0 2 0 2 2 0
8 0
mcl9k 9216 25 0 0 2 0 2 2 0
8 0
mcl8k 8192 49 0 0 5 2 3 3 0
8 0
mcl4k 4096 17 0 0 3 0 3 3 0
8 0
mcl2k2 2112 15 0 0 1 0 1 1 0
8 0
mcl2k 2048 311 0 0 26 14 12 26 0
8 0
mtagpl 80 140 0 0 2 1 1 2 0
8 0
mbufpl 256 891 0 0 34 0 34 34 0
8 0
bufpl 256 32135 0 24790 460 0 460 460 0
8 0
anonpl 16 952804 0 929197 233 132 101 109 0
124 4
amapchunkpl 152 55533 0 55348 93 81 12 21 0
158 2
amappl16 192 45385 0 44074 257 184 73 77 0
8 7
amappl15 184 1852 0 1852 5 5 0 1 0
8 0
amappl14 176 2211 0 2202 1 0 1 1 0
8 0
amappl13 168 1336 0 1336 6 6 0 1 0
8 0
amappl12 160 1387 0 1386 2 1 1 1 0
8 0
amappl11 152 604 0 588 1 0 1 1 0
8 0
amappl10 144 1754 0 1748 1 0 1 1 0
8 0
amappl9 136 1692 0 1689 1 0 1 1 0
8 0
amappl8 128 1287 0 1216 4 1 3 3 0
8 0
amappl7 120 1949 0 1939 1 0 1 1 0
8 0
amappl6 112 525 0 512 1 0 1 1 0
8 0
amappl5 104 1876 0 1862 1 0 1 1 0
8 0
amappl4 96 9745 0 9710 1 0 1 1 0
8 0
amappl3 88 5179 0 5163 1 0 1 1 0
8 0
amappl2 80 73195 0 73116 3 1 2 3 0
8 0
amappl1 72 193924 0 193483 26 16 10 20 0
8 0
amappl 80 26788 0 26715 2 0 2 2 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 17 0 17 1 1 0 1 0
8 0
aobjpl 64 132 0 3 3 0 3 3 0
8 0
uaddrrnd 24 9463 0 9372 1 0 1 1 0
8 0
uaddrbest 32 2 0 0 1 0 1 1 0
8 0
uaddr 24 9463 0 9372 1 0 1 1 0
8 0
vmmpekpl 168 66603 0 66561 3 0 3 3 0
8 0
vmmpepl 168 1163756 0 1161103 418 258 160 165 0 357
37
vmsppl 368 9387 0 9372 2 0 2 2 0
8 0
pdppl 4096 18933 0 18846 14 2 12 12 0
8 0
pvpl 32 2598086 0 2572917 462 234 228 247 0 265
19
pmappl 232 9462 0 9399 5 1 4 4 0
8 0
extentpl 40 41 0 26 1 0 1 1 0
8 0
phpool 112 797 0 119 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
Nov 15, 2019, 2:54:10 AM11/15/19
to syzkaller-o...@googlegroups.com
syzbot has found a reproducer for the following crash on:
HEAD commit: 3d133dcf Change window-size default from smallest to latest.
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=11c1925ae00000
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+5f6087...@syzkaller.appspotmail.com
login: panic: receive 3: so 0xfffffd806f6cf180, so_type 3, m
0xfffffd806d751500, m_type 0
429351 43182 0 0x14000 0x200 1 reaper
soreceive+0x1727
soo_read(fffffd80719fc558,ffff800020aa5188,0) at soo_read+0x53
sys/kern/sys_socket.c:70
dofilereadv(ffff800020a5f3c8,6,ffff800020aa5188,0,ffff800020aa5270) at
dofilereadv+0x1a2 sys/kern/sys_generic.c:236
sys_read(ffff800020a5f3c8,ffff800020aa5220,ffff800020aa5270) at
sys_read+0x83 sys/kern/sys_generic.c:156
syscall(ffff800020aa52f0) at syscall+0x4a4 mi_syscall
sys/sys/syscall_mi.h:92 [inline]
syscall(ffff800020aa52f0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
receive 3: so 0xfffffd806f6cf180, so_type 3, m 0xfffffd806d751500, m_type 0
ddb{0}> trace
soreceive+0x1727
soo_read(fffffd80719fc558,ffff800020aa5188,0) at soo_read+0x53
sys/kern/sys_socket.c:70
dofilereadv(ffff800020a5f3c8,6,ffff800020aa5188,0,ffff800020aa5270) at
dofilereadv+0x1a2 sys/kern/sys_generic.c:236
sys_read(ffff800020a5f3c8,ffff800020aa5220,ffff800020aa5270) at
sys_read+0x83 sys/kern/sys_generic.c:156
syscall(ffff800020aa52f0) at syscall+0x4a4 mi_syscall
sys/sys/syscall_mi.h:92 [inline]
syscall(ffff800020aa52f0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
ddb{0}> show registers
rdi 0
rsi 0x1
rbp 0xffff800020aa4ed0
rbx 0xffff800020aa4f80
rdx 0x8b
rcx 0x2
rax 0x1
r8 0xffffffff81c1ab0f kprintf+0x16f
r9 0x1
r10 0x2fa36030f898be75
r11 0x1c1253078b1e2257
r12 0x3000000008
r13 0xffff800020aa4ee0
r14 0x100
r15 0x1
rip 0xffffffff81406fc8 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff800020aa4ec0
PROC (dhclient) pid=402191 stat=onproc
process=0xffff800020a8a710 user=0xffff800020aa0000,
vmspace=0xfffffd807f007730
59550 29575 36260 0 3 0x4000082 nanosleep syz-execprog
59550 246848 36260 0 3 0x4000082 thrsleep syz-execprog
59550 445758 36260 0 3 0x4000082 thrsleep syz-execprog
59550 486990 36260 0 3 0x4000082 thrsleep syz-execprog
59550 478891 36260 0 3 0x4000082 nanosleep syz-execprog
59550 302680 36260 0 3 0x4000082 thrsleep syz-execprog
59550 261100 36260 0 3 0x4000082 wait syz-execprog
36260 424559 75113 0 3 0x10008a pause ksh
75113 149040 64089 0 3 0x92 select sshd
69329 383854 1 0 3 0x100083 ttyin getty
64089 426642 1 0 3 0x80 select sshd
9874 390769 10523 74 3 0x100092 bpf pflogd
10523 360284 1 0 3 0x80 netio pflogd
96036 346968 45852 73 3 0x100090 kqread syslogd
45852 497845 1 0 3 0x100082 netio syslogd
45130 101901 1 77 3 0x100090 poll dhclient
*97289 402191 1 0 7 0 dhclient
14976 123136 0 0 3 0x14200 pgzero zerothread
45189 418155 0 0 3 0x14200 aiodoned aiodoned
49217 474837 0 0 3 0x14200 syncer update
19230 78347 0 0 3 0x14200 cleaner cleaner
43182 429351 0 0 7 0x14200 reaper
62665 340105 0 0 3 0x14200 pgdaemon pagedaemon
74920 115789 0 0 3 0x14200 bored crynlk
5961 175511 0 0 3 0x14200 bored crypto
61334 58807 0 0 3 0x40014200 acpi0 acpi0
26339 429773 0 0 3 0x40014200 idle1
13011 497221 0 0 3 0x14200 bored softnet
31884 480837 0 0 3 0x14200 bored systqmp
28036 90160 0 0 3 0x14200 bored systq
10712 7042 0 0 3 0x40014200 bored softclock
30860 72722 0 0 3 0x40014200 idle0
28285 256931 0 0 3 0x14200 bored smr
1 192248 0 0 3 0x82 wait init
CPU 1:
exclusive mutex pvpl r = 0 (0xffffffff82658a70)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1163
#1 mtx_enter_try+0x102
#2 mtx_enter+0x4b sys/kern/kern_lock.c:266
#3 pool_put+0x64 sys/kern/subr_pool.c:800
#4 pmap_do_remove+0x61b sys/arch/amd64/amd64/pmap.c:1794
#5 uvm_map_teardown+0x195 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:206
[inline]
#5 uvm_map_teardown+0x195 sys/uvm/uvm_map.c:2719
#6 uvmspace_free+0x86 sys/uvm/uvm_map.c:3592
#7 uvm_exit+0x29 sys/uvm/uvm_glue.c:297
#8 reaper+0x189 sys/kern/kern_exit.c:442
#9 proc_trampoline+0x1c
Process 97289 (dhclient) thread 0xffff800020a5f3c8 (402191)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82656068)
pcb 13 8K 8K 78643K 13 0 0
rtable 63 2K 2K 78643K 165 0 0
ifaddr 30 8K 9K 78643K 39 0 0
VM map 2 1K 1K 78643K 2 0 0
sem 2 0K 0K 78643K 2 0 0
file desc 1 0K 12K 78643K 18 0 0
proc 59 63K 83K 78643K 398 0 0
ether_multi 1 0K 0K 78643K 1 0 0
exec 0 0K 1K 78643K 197 0 0
UVM aobj 2 2K 2K 78643K 2 0 0
temp 28 3537K 3601K 78643K 3291 0 0
8 0
rtentry 112 34 0 11 1 0 1 1 0
8 0
unpcb 120 29 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 34 0 28 1 0 1 1 0
8 0
nd6 48 2 0 2 1 0 1 1 0
8 1
8 0
pfstkey 112 11 0 0 1 0 1 1 0
8 0
pfstate 328 11 0 0 1 0 1 1 0
8 0
8 0
art_heap4 256 168 0 47 11 0 11 11 0
8 2
art_table 32 169 0 47 2 0 2 2 0
8 0
art_node 16 33 0 12 1 0 1 1 0
8 0
8 0
ffsino 272 1421 0 20 94 0 94 94 0
8 0
nchpl 144 1660 0 52 60 0 60 60 0
8 0
uvmvnodes 72 1431 0 0 27 0 27 27 0
8 0
vnodes 208 1431 0 0 76 0 76 76 0
8 0
namei 1024 4130 0 4130 1 0 1 1 0
8 1
plimitpl 152 15 0 8 1 0 1 1 0
8 0
sigapl 432 224 0 212 2 0 2 2 0
8 0
knotepl 112 39 0 28 1 0 1 1 0
8 0
kqueuepl 104 2 0 0 1 0 1 1 0
8 0
pipepl 160 148 0 138 1 0 1 1 0
8 0
fdescpl 488 225 0 212 3 0 3 3 0
8 0
filepl 152 1113 0 1059 3 0 3 3 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 19 0 9 1 0 1 1 0
8 0
pgrppl 48 19 0 9 1 0 1 1 0
8 0
ucredpl 96 52 0 43 1 0 1 1 0
8 0
zombiepl 144 212 0 211 1 0 1 1 0
8 0
processpl 896 240 0 211 4 0 4 4 0
8 0
procpl 632 247 0 211 4 0 4 4 0
8 1
srpgc 64 2 0 2 1 0 1 1 0
8 1
sockpl 384 80 0 62 2 0 2 2 0
8 0
mcl4k 4096 2 0 0 1 0 1 1 0
8 0
mcl2k 2048 56 0 0 7 0 7 7 0
8 0
mtagpl 80 1 0 0 1 0 1 1 0
8 0
mbufpl 256 121 0 0 8 0 8 8 0
8 0
bufpl 256 5882 0 1310 286 0 286 286 0
8 0
anonpl 16 21952 0 20393 14 1 13 13 0
124 5
amapchunkpl 152 829 0 764 5 0 5 5 0
158 2
amappl16 192 133 0 109 2 0 2 2 0
8 0
amappl15 184 1 0 0 1 0 1 1 0
8 0
amappl14 176 54 0 46 1 0 1 1 0
8 0
amappl12 160 15 0 12 1 0 1 1 0
8 0
amappl11 152 58 0 43 1 0 1 1 0
8 0
amappl10 144 15 0 12 1 0 1 1 0
8 0
amappl9 136 433 0 431 1 0 1 1 0
8 0
amappl8 128 128 0 116 1 0 1 1 0
8 0
amappl7 120 36 0 32 1 0 1 1 0
8 0
amappl6 112 58 0 51 1 0 1 1 0
8 0
amappl5 104 126 0 113 1 0 1 1 0
8 0
amappl4 96 492 0 465 1 0 1 1 0
8 0
amappl3 88 117 0 111 1 0 1 1 0
8 0
amappl2 80 940 0 879 3 0 3 3 0
8 1
amappl1 72 15398 0 14995 26 8 18 20 0
8 8
amappl 80 476 0 448 1 0 1 1 0
8 0
aobjpl 64 1 0 0 1 0 1 1 0
8 0
uaddrrnd 24 225 0 212 1 0 1 1 0
8 0
vmmpekpl 168 6385 0 6361 2 0 2 2 0
8 0
vmmpepl 168 32449 0 31560 85 6 79 79 0 357
37
vmsppl 368 224 0 211 2 0 2 2 0
8 0
pdppl 4096 457 0 422 6 0 6 6 0
8 1
pvpl 32 112543 0 108655 115 0 115 115 0 265
82
pmappl 232 224 0 211 1 0 1 1 0
8 0
extentpl 40 46 0 29 1 0 1 1 0
8 0
phpool 112 425 0 3 13 0 13 13 0
8 0
ddb{0}>
HEAD commit: 3d133dcf Change window-size default from smallest to latest.
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=11c1925ae00000
kernel config: https://syzkaller.appspot.com/x/.config?x=26ca0a9c07f16a3a
dashboard link: https://syzkaller.appspot.com/bug?extid=5f608736d5087aa460c7
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=113591e2e00000
dashboard link: https://syzkaller.appspot.com/bug?extid=5f608736d5087aa460c7
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+5f6087...@syzkaller.appspotmail.com
0xfffffd806d751500, m_type 0
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*402191 97289 0 0 0 0K dhclient
TID PID UID PRFLAGS PFLAGS CPU COMMAND
429351 43182 0 0x14000 0x200 1 reaper
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic() at panic+0x15c sys/kern/subr_prf.c:207
soreceive(fffffd806f6cf180,0,ffff800020aa5188,0,0,ffff800020aa5094) at
panic() at panic+0x15c sys/kern/subr_prf.c:207
soreceive+0x1727
soo_read(fffffd80719fc558,ffff800020aa5188,0) at soo_read+0x53
sys/kern/sys_socket.c:70
dofilereadv(ffff800020a5f3c8,6,ffff800020aa5188,0,ffff800020aa5270) at
dofilereadv+0x1a2 sys/kern/sys_generic.c:236
sys_read(ffff800020a5f3c8,ffff800020aa5220,ffff800020aa5270) at
sys_read+0x83 sys/kern/sys_generic.c:156
syscall(ffff800020aa52f0) at syscall+0x4a4 mi_syscall
sys/sys/syscall_mi.h:92 [inline]
syscall(ffff800020aa52f0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffef670, count: 7
end of kernel
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}>
reports. Insufficient info makes it difficult to find and fix bugs.
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
receive 3: so 0xfffffd806f6cf180, so_type 3, m 0xfffffd806d751500, m_type 0
ddb{0}> 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
soreceive(fffffd806f6cf180,0,ffff800020aa5188,0,0,ffff800020aa5094) at
panic() at panic+0x15c sys/kern/subr_prf.c:207
soreceive+0x1727
soo_read(fffffd80719fc558,ffff800020aa5188,0) at soo_read+0x53
sys/kern/sys_socket.c:70
dofilereadv(ffff800020a5f3c8,6,ffff800020aa5188,0,ffff800020aa5270) at
dofilereadv+0x1a2 sys/kern/sys_generic.c:236
sys_read(ffff800020a5f3c8,ffff800020aa5220,ffff800020aa5270) at
sys_read+0x83 sys/kern/sys_generic.c:156
syscall(ffff800020aa52f0) at syscall+0x4a4 mi_syscall
sys/sys/syscall_mi.h:92 [inline]
syscall(ffff800020aa52f0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffef670, count: -8
end of kernel
ddb{0}> show registers
rdi 0
rsi 0x1
rbp 0xffff800020aa4ed0
rbx 0xffff800020aa4f80
rdx 0x8b
rcx 0x2
rax 0x1
r8 0xffffffff81c1ab0f kprintf+0x16f
r9 0x1
r10 0x2fa36030f898be75
r11 0x1c1253078b1e2257
r12 0x3000000008
r13 0xffff800020aa4ee0
r14 0x100
r15 0x1
rip 0xffffffff81406fc8 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff800020aa4ec0
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb{0}> show proc
db_enter+0x18: addq $0x8,%rsp
PROC (dhclient) pid=402191 stat=onproc
flags process=0 proc=0
pri=50, usrpri=50, nice=20
forw=0xffffffffffffffff, list=0xffff800020a5e4f8,0xffff800020a5f650
pri=50, usrpri=50, nice=20
process=0xffff800020a8a710 user=0xffff800020aa0000,
vmspace=0xfffffd807f007730
estcpu=0, cpticks=1, pctcpu=0.0
user=0, sys=1, intr=0
ddb{0}> ps
user=0, sys=1, intr=0
PID TID PPID UID S FLAGS WAIT COMMAND
59550 419686 36260 0 3 0x82 thrsleep syz-execprog
59550 29575 36260 0 3 0x4000082 nanosleep syz-execprog
59550 246848 36260 0 3 0x4000082 thrsleep syz-execprog
59550 445758 36260 0 3 0x4000082 thrsleep syz-execprog
59550 486990 36260 0 3 0x4000082 thrsleep syz-execprog
59550 478891 36260 0 3 0x4000082 nanosleep syz-execprog
59550 302680 36260 0 3 0x4000082 thrsleep syz-execprog
59550 261100 36260 0 3 0x4000082 wait syz-execprog
36260 424559 75113 0 3 0x10008a pause ksh
75113 149040 64089 0 3 0x92 select sshd
69329 383854 1 0 3 0x100083 ttyin getty
64089 426642 1 0 3 0x80 select sshd
9874 390769 10523 74 3 0x100092 bpf pflogd
10523 360284 1 0 3 0x80 netio pflogd
96036 346968 45852 73 3 0x100090 kqread syslogd
45852 497845 1 0 3 0x100082 netio syslogd
45130 101901 1 77 3 0x100090 poll dhclient
*97289 402191 1 0 7 0 dhclient
14976 123136 0 0 3 0x14200 pgzero zerothread
45189 418155 0 0 3 0x14200 aiodoned aiodoned
49217 474837 0 0 3 0x14200 syncer update
19230 78347 0 0 3 0x14200 cleaner cleaner
43182 429351 0 0 7 0x14200 reaper
62665 340105 0 0 3 0x14200 pgdaemon pagedaemon
74920 115789 0 0 3 0x14200 bored crynlk
5961 175511 0 0 3 0x14200 bored crypto
61334 58807 0 0 3 0x40014200 acpi0 acpi0
26339 429773 0 0 3 0x40014200 idle1
13011 497221 0 0 3 0x14200 bored softnet
31884 480837 0 0 3 0x14200 bored systqmp
28036 90160 0 0 3 0x14200 bored systq
10712 7042 0 0 3 0x40014200 bored softclock
30860 72722 0 0 3 0x40014200 idle0
28285 256931 0 0 3 0x14200 bored smr
1 192248 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
CPU 1:
exclusive mutex pvpl r = 0 (0xffffffff82658a70)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1163
#1 mtx_enter_try+0x102
#2 mtx_enter+0x4b sys/kern/kern_lock.c:266
#3 pool_put+0x64 sys/kern/subr_pool.c:800
#4 pmap_do_remove+0x61b sys/arch/amd64/amd64/pmap.c:1794
#5 uvm_map_teardown+0x195 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:206
[inline]
#5 uvm_map_teardown+0x195 sys/uvm/uvm_map.c:2719
#6 uvmspace_free+0x86 sys/uvm/uvm_map.c:3592
#7 uvm_exit+0x29 sys/uvm/uvm_glue.c:297
#8 reaper+0x189 sys/kern/kern_exit.c:442
#9 proc_trampoline+0x1c
Process 97289 (dhclient) thread 0xffff800020a5f3c8 (402191)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82656068)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1163
#1 solock+0x66 sys/kern/uipc_socket2.c:292
#2 soreceive+0x114 sys/kern/uipc_socket.c:706
#3 soo_read+0x53 sys/kern/sys_socket.c:70
#4 dofilereadv+0x1a2 sys/kern/sys_generic.c:236
#5 sys_read+0x83 sys/kern/sys_generic.c:156
#6 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline]
#6 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
#7 Xsyscall+0x128
ddb{0}> show malloc
#1 solock+0x66 sys/kern/uipc_socket2.c:292
#2 soreceive+0x114 sys/kern/uipc_socket.c:706
#3 soo_read+0x53 sys/kern/sys_socket.c:70
#4 dofilereadv+0x1a2 sys/kern/sys_generic.c:236
#5 sys_read+0x83 sys/kern/sys_generic.c:156
#6 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline]
#6 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
#7 Xsyscall+0x128
Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim
devbuf 9461 6393K 6395K 78643K 10556 0 0
pcb 13 8K 8K 78643K 13 0 0
rtable 63 2K 2K 78643K 165 0 0
ifaddr 30 8K 9K 78643K 39 0 0
counters 39 33K 33K 78643K 39 0 0
ioctlops 0 0K 4K 78643K 1468 0 0
mount 1 1K 1K 78643K 1 0 0
vnodes 1181 74K 74K 78643K 1186 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
UFS mount 5 36K 36K 78643K 5 0 0
VM map 2 1K 1K 78643K 2 0 0
sem 2 0K 0K 78643K 2 0 0
dirhash 12 2K 2K 78643K 12 0 0
ACPI 1809 196K 290K 78643K 12766 0 0
file desc 1 0K 12K 78643K 18 0 0
proc 59 63K 83K 78643K 398 0 0
NFS srvsock 1 0K 0K 78643K 1 0 0
NFS daemon 1 16K 16K 78643K 1 0 0
in_multi 11 0K 1K 78643K 22 0 0
NFS daemon 1 16K 16K 78643K 1 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
MSDOSFS mount 1 16K 16K 78643K 1 0 0
exec 0 0K 1K 78643K 197 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 70 11K 12K 78643K 948 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 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 4 0K 0K 78643K 7 0 0
crypto data 1 1K 1K 78643K 1 0 0
temp 28 3537K 3601K 78643K 3291 0 0
SYN cache 2 16K 16K 78643K 2 0 0
ddb{0}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg
Idle
arp 64 4 0 2 1 0 1 1 0
Idle
8 0
plcache 128 20 0 0 1 0 1 1 0
8 0
rtpcb 80 17 0 15 1 0 1 1 0
plcache 128 20 0 0 1 0 1 1 0
8 0
8 0
rtentry 112 34 0 11 1 0 1 1 0
8 0
unpcb 120 29 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 34 0 28 1 0 1 1 0
8 0
nd6 48 2 0 2 1 0 1 1 0
8 1
pfosfp 40 846 0 423 5 0 5 5 0
8 0
pfosfpen 112 1428 0 714 21 0 21 21 0
8 0
pfstitem 24 11 0 0 1 0 1 1 0
8 0
pfosfpen 112 1428 0 714 21 0 21 21 0
8 0
8 0
pfstkey 112 11 0 0 1 0 1 1 0
8 0
pfstate 328 11 0 0 1 0 1 1 0
8 0
pfrule 1360 21 0 16 2 1 1 2 0
8 0
art_heap8 4096 1 0 0 1 0 1 1 0
8 0
8 0
art_heap4 256 168 0 47 11 0 11 11 0
8 2
art_table 32 169 0 47 2 0 2 2 0
8 0
art_node 16 33 0 12 1 0 1 1 0
8 0
dirhash 1024 17 0 0 3 0 3 3 0
8 0
dino1pl 128 1421 0 20 46 0 46 46 0
8 0
8 0
ffsino 272 1421 0 20 94 0 94 94 0
8 0
nchpl 144 1660 0 52 60 0 60 60 0
8 0
uvmvnodes 72 1431 0 0 27 0 27 27 0
8 0
vnodes 208 1431 0 0 76 0 76 76 0
8 0
namei 1024 4130 0 4130 1 0 1 1 0
8 1
percpumem 16 30 0 0 1 0 1 1 0
8 0
scxspl 192 4077 0 4077 2 1 1 2 0
percpumem 16 30 0 0 1 0 1 1 0
8 0
8 1
plimitpl 152 15 0 8 1 0 1 1 0
8 0
sigapl 432 224 0 212 2 0 2 2 0
8 0
knotepl 112 39 0 28 1 0 1 1 0
8 0
kqueuepl 104 2 0 0 1 0 1 1 0
8 0
pipepl 160 148 0 138 1 0 1 1 0
8 0
fdescpl 488 225 0 212 3 0 3 3 0
8 0
filepl 152 1113 0 1059 3 0 3 3 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 19 0 9 1 0 1 1 0
8 0
pgrppl 48 19 0 9 1 0 1 1 0
8 0
ucredpl 96 52 0 43 1 0 1 1 0
8 0
zombiepl 144 212 0 211 1 0 1 1 0
8 0
processpl 896 240 0 211 4 0 4 4 0
8 0
procpl 632 247 0 211 4 0 4 4 0
8 1
srpgc 64 2 0 2 1 0 1 1 0
8 1
sockpl 384 80 0 62 2 0 2 2 0
8 0
mcl4k 4096 2 0 0 1 0 1 1 0
8 0
mcl2k 2048 56 0 0 7 0 7 7 0
8 0
mtagpl 80 1 0 0 1 0 1 1 0
8 0
mbufpl 256 121 0 0 8 0 8 8 0
8 0
bufpl 256 5882 0 1310 286 0 286 286 0
8 0
anonpl 16 21952 0 20393 14 1 13 13 0
124 5
amapchunkpl 152 829 0 764 5 0 5 5 0
158 2
amappl16 192 133 0 109 2 0 2 2 0
8 0
amappl15 184 1 0 0 1 0 1 1 0
8 0
amappl14 176 54 0 46 1 0 1 1 0
8 0
amappl12 160 15 0 12 1 0 1 1 0
8 0
amappl11 152 58 0 43 1 0 1 1 0
8 0
amappl10 144 15 0 12 1 0 1 1 0
8 0
amappl9 136 433 0 431 1 0 1 1 0
8 0
amappl8 128 128 0 116 1 0 1 1 0
8 0
amappl7 120 36 0 32 1 0 1 1 0
8 0
amappl6 112 58 0 51 1 0 1 1 0
8 0
amappl5 104 126 0 113 1 0 1 1 0
8 0
amappl4 96 492 0 465 1 0 1 1 0
8 0
amappl3 88 117 0 111 1 0 1 1 0
8 0
amappl2 80 940 0 879 3 0 3 3 0
8 1
amappl1 72 15398 0 14995 26 8 18 20 0
8 8
amappl 80 476 0 448 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
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
8 0
aobjpl 64 1 0 0 1 0 1 1 0
8 0
uaddrrnd 24 225 0 212 1 0 1 1 0
8 0
uaddrbest 32 2 0 0 1 0 1 1 0
8 0
uaddr 24 225 0 212 1 0 1 1 0
uaddrbest 32 2 0 0 1 0 1 1 0
8 0
8 0
vmmpekpl 168 6385 0 6361 2 0 2 2 0
8 0
vmmpepl 168 32449 0 31560 85 6 79 79 0 357
37
vmsppl 368 224 0 211 2 0 2 2 0
8 0
pdppl 4096 457 0 422 6 0 6 6 0
8 1
pvpl 32 112543 0 108655 115 0 115 115 0 265
82
pmappl 232 224 0 211 1 0 1 1 0
8 0
extentpl 40 46 0 29 1 0 1 1 0
8 0
phpool 112 425 0 3 13 0 13 13 0
8 0
ddb{0}>
Anton Lindqvist
Feb 28, 2020, 3:38:31 AM2/28/20
to syzbot, syzkaller-o...@googlegroups.com
#syz dup: soreceive 3
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