panic: unhandled af
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syzbot
Jan 3, 2020, 5:55:08 AM1/3/20
to syzkaller-o...@googlegroups.com
Hello,
syzbot found the following crash on:
HEAD commit: e22fe1b6 avoid build race condition: our make has an "expe..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=168919fee00000
kernel config: https://syzkaller.appspot.com/x/.config?x=bf87b6915a88cd0d
dashboard link: https://syzkaller.appspot.com/bug?extid=92be143c2dd1746cf2af
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+92be14...@syzkaller.appspotmail.com
panic: unhandled af 12
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
123676 32849 0 0 0 1 syz-executor.1
*451016 32849 0 0 0x4000000 0K syz-executor.1
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff821d7d9a) at panic+0x15c sys/kern/subr_prf.c:207
unhandled_af(c) at unhandled_af+0x16
pf_addrcpy(ffff800021bb6b18,ffff800021bb6e10,c) at pf_addrcpy+0x99
sys/net/pf.c:409
pfioctl(4900,c0504417,ffff800021bb6e10,1,ffff800020ac93d8) at
pfioctl+0x43cf sys/net/pf_ioctl.c:1827
VOP_IOCTL(fffffd806f6cc290,c0504417,ffff800021bb6e10,1,fffffd807f7be6c0,ffff800020ac93d8)
at
VOP_IOCTL+0x88 sys/kern/vfs_vops.c:291
vn_ioctl(fffffd80648b5150,c0504417,ffff800021bb6e10,ffff800020ac93d8) at
vn_ioctl+0xb7 sys/kern/vfs_vnops.c:533
sys_ioctl(ffff800020ac93d8,ffff800021bb6f28,ffff800021bb6f70) at
sys_ioctl+0x5b9
syscall(ffff800021bb6ff0) at syscall+0x4a4 mi_syscall
sys/sys/syscall_mi.h:92 [inline]
syscall(ffff800021bb6ff0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xfdc5a648f10, 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
unhandled af 12
ddb{0}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff821d7d9a) at panic+0x15c sys/kern/subr_prf.c:207
unhandled_af(c) at unhandled_af+0x16
pf_addrcpy(ffff800021bb6b18,ffff800021bb6e10,c) at pf_addrcpy+0x99
sys/net/pf.c:409
pfioctl(4900,c0504417,ffff800021bb6e10,1,ffff800020ac93d8) at
pfioctl+0x43cf sys/net/pf_ioctl.c:1827
VOP_IOCTL(fffffd806f6cc290,c0504417,ffff800021bb6e10,1,fffffd807f7be6c0,ffff800020ac93d8)
at
VOP_IOCTL+0x88 sys/kern/vfs_vops.c:291
vn_ioctl(fffffd80648b5150,c0504417,ffff800021bb6e10,ffff800020ac93d8) at
vn_ioctl+0xb7 sys/kern/vfs_vnops.c:533
sys_ioctl(ffff800020ac93d8,ffff800021bb6f28,ffff800021bb6f70) at
sys_ioctl+0x5b9
syscall(ffff800021bb6ff0) at syscall+0x4a4 mi_syscall
sys/sys/syscall_mi.h:92 [inline]
syscall(ffff800021bb6ff0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xfdc5a648f10, count: -10
ddb{0}> show registers
rdi 0xffffffff81f3d997 db_enter+0x17
rsi 0xb4a
rbp 0xffff800021bb69d0
rbx 0xffff800021bb6a80
rdx 0xb4b
rcx 0xffff800022f9a000
rax 0xffff800022f9a000
r8 0xffffffff81dfe84f kprintf+0x16f
r9 0x1
r10 0x25
r11 0x3e524cae8d5264f
r12 0x3000000008
r13 0xffff800021bb69e0
r14 0x100
r15 0x1
rip 0xffffffff81f3d998 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff800021bb69c0
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb{0}> show proc
PROC (syz-executor.1) pid=451016 stat=onproc
flags process=0 proc=4000000<THREAD>
pri=86, usrpri=86, nice=20
forw=0xffffffffffffffff, list=0xffff800020ac8508,0xffffffff82623980
process=0xffff800020af4728 user=0xffff800021bb2000,
vmspace=0xfffffd807efff8a0
estcpu=36, cpticks=0, pctcpu=0.0
user=0, sys=0, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
32849 123676 21845 0 7 0 syz-executor.1
32849 394070 21845 0 2 0x4000000 syz-executor.1
*32849 451016 21845 0 7 0x4000000 syz-executor.1
92748 202083 73866 0 2 0 syz-executor.0
92748 295474 73866 0 3 0x4000080 poll syz-executor.0
92748 289728 73866 0 3 0x4000080 fsleep syz-executor.0
21845 278798 70332 0 3 0x82 nanosleep syz-executor.1
246 195616 0 0 3 0x14200 bored sosplice
73866 189798 70332 0 3 0x82 nanosleep syz-executor.0
70332 183801 31333 0 3 0x82 kqread syz-fuzzer
70332 340511 31333 0 3 0x4000082 thrsleep syz-fuzzer
70332 180809 31333 0 3 0x4000082 thrsleep syz-fuzzer
70332 235815 31333 0 3 0x4000082 thrsleep syz-fuzzer
70332 71936 31333 0 3 0x4000082 thrsleep syz-fuzzer
70332 384910 31333 0 3 0x4000082 thrsleep syz-fuzzer
70332 249655 31333 0 3 0x4000082 thrsleep syz-fuzzer
70332 240442 31333 0 3 0x4000082 thrsleep syz-fuzzer
70332 309283 31333 0 3 0x4000082 thrsleep syz-fuzzer
70332 250603 31333 0 3 0x4000082 thrsleep syz-fuzzer
31333 175274 66900 0 3 0x10008a pause ksh
66900 5302 19025 0 3 0x92 select sshd
90184 52323 1 0 3 0x100083 ttyin getty
19025 508478 1 0 3 0x80 select sshd
81810 42938 26595 74 3 0x100092 bpf pflogd
26595 330048 1 0 3 0x80 netio pflogd
41534 421611 22047 73 3 0x100090 kqread syslogd
22047 397559 1 0 3 0x100082 netio syslogd
96632 510408 1 77 3 0x100090 poll dhclient
88966 337145 1 0 3 0x80 poll dhclient
21789 251284 0 0 2 0x14200 zerothread
3849 203806 0 0 3 0x14200 aiodoned aiodoned
53475 157157 0 0 3 0x14200 syncer update
83216 274543 0 0 3 0x14200 cleaner cleaner
73423 451164 0 0 3 0x14200 reaper reaper
78117 37300 0 0 3 0x14200 pgdaemon pagedaemon
75431 185671 0 0 3 0x14200 bored crynlk
6589 469026 0 0 3 0x14200 bored crypto
95193 39310 0 0 3 0x40014200 acpi0 acpi0
20198 392823 0 0 3 0x40014200 idle1
22639 69550 0 0 3 0x14200 bored softnet
29593 3672 0 0 3 0x14200 bored systqmp
35563 110640 0 0 3 0x14200 bored systq
6931 191464 0 0 3 0x40014200 bored softclock
32258 409260 0 0 3 0x40014200 idle0
36139 84813 0 0 3 0x14200 bored smr
1 476200 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
Process 32849 (syz-executor.1) thread 0xffff800020ac93d8 (451016)
exclusive rwlock netlock r = 0 (0xffffffff82471638)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1163
#1 pfioctl+0x15f sys/net/pf_ioctl.c:1028
#2 VOP_IOCTL+0x88 sys/kern/vfs_vops.c:291
#3 vn_ioctl+0xb7 sys/kern/vfs_vnops.c:533
#4 sys_ioctl+0x5b9
#5 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline]
#5 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
#6 Xsyscall+0x128
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8261e160)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1163
#1 syscall+0x400 mi_syscall sys/sys/syscall_mi.h:83 [inline]
#1 syscall+0x400 sys/arch/amd64/amd64/trap.c:555
#2 Xsyscall+0x128
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 9477 6414K 6801K 78643K 41703 0
pcb 13 8K 8K 78643K 1442 0
rtable 115 5K 6K 78643K 271 0
ifaddr 45 10K 10K 78643K 53 0
counters 39 33K 33K 78643K 39 0
ioctlops 0 0K 4K 78643K 2201 0
iov 0 0K 16K 78643K 1350 0
mount 1 1K 1K 78643K 1 0
vnodes 1265 79K 79K 78643K 27969 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 9K 78643K 192 0
VM map 2 1K 1K 78643K 2 0
sem 12 0K 0K 78643K 194 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1809 196K 290K 78643K 12766 0
file desc 6 17K 25K 78643K 24673 0
sigio 1 0K 0K 78643K 564 0
proc 61 63K 83K 78643K 638 0
subproc 32 2K 2K 78643K 51 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 49 0
in_multi 33 2K 2K 78643K 44 0
ether_multi 1 0K 0K 78643K 1 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 49 228K 228K 78643K 49 0
exec 0 0K 1K 78643K 248 0
pagedep 1 8K 8K 78643K 1 0
inodedep 1 32K 32K 78643K 1 0
newblk 1 0K 0K 78643K 1 0
VM swap 7 26K 26K 78643K 7 0
UVM amap 203 27K 28K 78643K 56655 0
UVM aobj 130 4K 4K 78643K 198 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 8 0
NDP 6 0K 0K 78643K 13 0
temp 111 3028K 3094K 78643K 105697 0
kqueue 0 0K 0K 78643K 13 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
arp 64 8 0 2 1 0 1 1 0
8 0
plcache 128 20 0 0 1 0 1 1 0
8 0
rtpcb 80 126 0 124 1 0 1 1 0
8 0
rtentry 112 55 0 11 2 0 2 2 0
8 0
unpcb 120 17356 0 17342 5 4 1 2 0
8 0
syncache 264 4 0 4 1 1 0 1 0
8 0
sackhl 24 2 0 2 2 2 0 1 0
8 0
tcpcb 544 218 0 214 1 0 1 1 0
8 0
inpcb 280 20657 0 20648 37 35 2 3 0
8 1
nd6 48 6 0 2 1 0 1 1 0
8 0
pkpcb 40 21 0 21 1 1 0 1 0
8 0
pffrag 232 8 0 8 2 2 0 1 0
482 0
pffrnode 88 8 0 8 2 2 0 1 0
8 0
pffrent 40 24 0 24 2 2 0 1 0
8 0
pfosfp 40 846 0 846 5 5 0 5 0
8 0
pfosfpen 112 1428 0 1428 21 21 0 21 0
8 0
pfrktable 1344 4 0 1 1 0 1 1 0
8 0
pfstitem 24 18 0 15 1 0 1 1 0
8 0
pfstkey 112 18 0 15 1 0 1 1 0
8 0
pfstate 328 18 0 15 1 0 1 1 0
8 0
pfrule 1360 50 0 16 4 1 3 3 0
8 0
art_heap8 4096 1 0 0 1 0 1 1 0
8 0
art_heap4 256 256 0 43 14 0 14 14 0
8 0
art_table 32 257 0 43 2 0 2 2 0
8 0
art_node 16 54 0 14 1 0 1 1 0
8 0
semapl 112 192 0 182 1 0 1 1 0
8 0
shmpl 112 196 0 68 4 0 4 4 0
8 0
dirhash 1024 17 0 0 3 0 3 3 0
8 0
dino1pl 128 27487 0 26075 46 0 46 46 0
8 0
ffsino 272 27487 0 26075 95 0 95 95 0
8 0
nchpl 144 58817 0 57140 66 3 63 63 0
8 0
uvmvnodes 72 5926 0 0 108 0 108 108 0
8 0
vnodes 208 5926 0 0 312 0 312 312 0
8 0
namei 1024 172752 0 172752 1 0 1 1 0
8 1
percpumem 16 30 0 0 1 0 1 1 0
8 0
pfiaddrpl 120 7 0 0 1 0 1 1 0
8 0
scxspl 192 159846 0 159846 9 8 1 7 0
8 1
plimitpl 152 113 0 105 1 0 1 1 0
8 0
sigapl 432 24869 0 24853 3 1 2 3 0
8 0
futexpl 56 182423 0 182422 1 0 1 1 0
8 0
knotepl 112 251 0 232 1 0 1 1 0
8 0
kqueuepl 104 831 0 829 1 0 1 1 0
8 0
pipepl 112 10772 0 10751 2 1 1 2 0
8 0
fdescpl 488 24870 0 24853 3 0 3 3 0
8 0
filepl 152 133109 0 132996 56 50 6 8 0
8 1
lockfpl 104 2964 0 2963 1 0 1 1 0
8 0
lockfspl 48 1432 0 1431 1 0 1 1 0
8 0
sessionpl 112 19 0 8 1 0 1 1 0
8 0
pgrppl 48 774 0 763 1 0 1 1 0
8 0
ucredpl 96 15342 0 15333 1 0 1 1 0
8 0
zombiepl 144 24853 0 24853 1 0 1 1 0
8 1
processpl 904 24886 0 24853 4 0 4 4 0
8 0
procpl 632 55703 0 55657 26 21 5 5 0
8 1
srpgc 64 2 0 2 1 1 0 1 0
8 0
sosppl 128 4 0 4 2 2 0 1 0
8 0
sockpl 384 38368 0 38343 67 63 4 8 0
8 1
mcl64k 65536 17 0 0 3 0 3 3 0
8 0
mcl16k 16384 25 0 0 4 1 3 3 0
8 0
mcl12k 12288 33 0 0 2 0 2 2 0
8 0
mcl9k 9216 49 0 0 2 0 2 2 0
8 0
mcl8k 8192 31 0 0 3 0 3 3 0
8 0
mcl4k 4096 33 0 0 3 0 3 3 0
8 0
mcl2k2 2112 10 0 0 1 0 1 1 0
8 0
mcl2k 2048 419 0 0 27 20 7 25 0
8 0
mtagpl 80 10 0 0 1 0 1 1 0
8 0
mbufpl 256 1036 0 0 13 0 13 13 0
8 0
bufpl 280 31924 0 24854 506 0 506 506 0
8 0
anonpl 16 1510079 0 1502212 41 3 38 39 0
125 0
amapchunkpl 152 87536 0 87424 8 3 5 6 0
158 0
amappl16 192 110660 0 110173 25 0 25 25 0
8 0
amappl15 184 61 0 58 1 0 1 1 0
8 0
amappl14 176 37 0 34 1 0 1 1 0
8 0
amappl13 168 5938 0 5937 1 0 1 1 0
8 0
amappl12 160 3 0 2 2 1 1 1 0
8 0
amappl11 152 61 0 46 1 0 1 1 0
8 0
amappl10 144 16 0 11 1 0 1 1 0
8 0
amappl9 136 7228 0 7223 1 0 1 1 0
8 0
amappl8 128 6972 0 6865 4 0 4 4 0
8 0
amappl7 120 111 0 98 1 0 1 1 0
8 0
amappl6 112 73 0 60 1 0 1 1 0
8 0
amappl5 104 341 0 327 1 0 1 1 0
8 0
amappl4 96 24965 0 24932 2 1 1 2 0
8 0
amappl3 88 1061 0 1052 1 0 1 1 0
8 0
amappl2 80 202035 0 201954 3 1 2 3 0
8 0
amappl1 72 443777 0 443299 25 15 10 20 0
8 0
amappl 80 55963 0 55918 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 18 0 17 1 0 1 1 0
8 0
aobjpl 64 197 0 68 3 0 3 3 0
8 0
uaddrrnd 24 24870 0 24853 1 0 1 1 0
8 0
uaddrbest 32 2 0 0 1 0 1 1 0
8 0
uaddr 24 24870 0 24853 1 0 1 1 0
8 0
vmmpekpl 168 129902 0 129868 3 1 2 2 0
8 0
vmmpepl 168 2780843 0 2778963 149 66 83 88 0
357 1
vmsppl 368 24869 0 24853 2 0 2 2 0
8 0
pdppl 4096 49747 0 49706 6 0 6 6 0
8 0
pvpl 32 4814271 0 4803048 183 81 102 118 0
265 0
pmappl 232 24869 0 24853 2 1 1 2 0
8 0
extentpl 40 46 0 29 1 0 1 1 0
8 0
phpool 112 186 0 24 5 0 5 5 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: e22fe1b6 avoid build race condition: our make has an "expe..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=168919fee00000
kernel config: https://syzkaller.appspot.com/x/.config?x=bf87b6915a88cd0d
dashboard link: https://syzkaller.appspot.com/bug?extid=92be143c2dd1746cf2af
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+92be14...@syzkaller.appspotmail.com
panic: unhandled af 12
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
123676 32849 0 0 0 1 syz-executor.1
*451016 32849 0 0 0x4000000 0K syz-executor.1
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff821d7d9a) at panic+0x15c sys/kern/subr_prf.c:207
unhandled_af(c) at unhandled_af+0x16
pf_addrcpy(ffff800021bb6b18,ffff800021bb6e10,c) at pf_addrcpy+0x99
sys/net/pf.c:409
pfioctl(4900,c0504417,ffff800021bb6e10,1,ffff800020ac93d8) at
pfioctl+0x43cf sys/net/pf_ioctl.c:1827
VOP_IOCTL(fffffd806f6cc290,c0504417,ffff800021bb6e10,1,fffffd807f7be6c0,ffff800020ac93d8)
at
VOP_IOCTL+0x88 sys/kern/vfs_vops.c:291
vn_ioctl(fffffd80648b5150,c0504417,ffff800021bb6e10,ffff800020ac93d8) at
vn_ioctl+0xb7 sys/kern/vfs_vnops.c:533
sys_ioctl(ffff800020ac93d8,ffff800021bb6f28,ffff800021bb6f70) at
sys_ioctl+0x5b9
syscall(ffff800021bb6ff0) at syscall+0x4a4 mi_syscall
sys/sys/syscall_mi.h:92 [inline]
syscall(ffff800021bb6ff0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xfdc5a648f10, 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
unhandled af 12
ddb{0}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff821d7d9a) at panic+0x15c sys/kern/subr_prf.c:207
unhandled_af(c) at unhandled_af+0x16
pf_addrcpy(ffff800021bb6b18,ffff800021bb6e10,c) at pf_addrcpy+0x99
sys/net/pf.c:409
pfioctl(4900,c0504417,ffff800021bb6e10,1,ffff800020ac93d8) at
pfioctl+0x43cf sys/net/pf_ioctl.c:1827
VOP_IOCTL(fffffd806f6cc290,c0504417,ffff800021bb6e10,1,fffffd807f7be6c0,ffff800020ac93d8)
at
VOP_IOCTL+0x88 sys/kern/vfs_vops.c:291
vn_ioctl(fffffd80648b5150,c0504417,ffff800021bb6e10,ffff800020ac93d8) at
vn_ioctl+0xb7 sys/kern/vfs_vnops.c:533
sys_ioctl(ffff800020ac93d8,ffff800021bb6f28,ffff800021bb6f70) at
sys_ioctl+0x5b9
syscall(ffff800021bb6ff0) at syscall+0x4a4 mi_syscall
sys/sys/syscall_mi.h:92 [inline]
syscall(ffff800021bb6ff0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xfdc5a648f10, count: -10
ddb{0}> show registers
rdi 0xffffffff81f3d997 db_enter+0x17
rsi 0xb4a
rbp 0xffff800021bb69d0
rbx 0xffff800021bb6a80
rdx 0xb4b
rcx 0xffff800022f9a000
rax 0xffff800022f9a000
r8 0xffffffff81dfe84f kprintf+0x16f
r9 0x1
r10 0x25
r11 0x3e524cae8d5264f
r12 0x3000000008
r13 0xffff800021bb69e0
r14 0x100
r15 0x1
rip 0xffffffff81f3d998 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff800021bb69c0
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb{0}> show proc
PROC (syz-executor.1) pid=451016 stat=onproc
flags process=0 proc=4000000<THREAD>
pri=86, usrpri=86, nice=20
forw=0xffffffffffffffff, list=0xffff800020ac8508,0xffffffff82623980
process=0xffff800020af4728 user=0xffff800021bb2000,
vmspace=0xfffffd807efff8a0
estcpu=36, cpticks=0, pctcpu=0.0
user=0, sys=0, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
32849 123676 21845 0 7 0 syz-executor.1
32849 394070 21845 0 2 0x4000000 syz-executor.1
*32849 451016 21845 0 7 0x4000000 syz-executor.1
92748 202083 73866 0 2 0 syz-executor.0
92748 295474 73866 0 3 0x4000080 poll syz-executor.0
92748 289728 73866 0 3 0x4000080 fsleep syz-executor.0
21845 278798 70332 0 3 0x82 nanosleep syz-executor.1
246 195616 0 0 3 0x14200 bored sosplice
73866 189798 70332 0 3 0x82 nanosleep syz-executor.0
70332 183801 31333 0 3 0x82 kqread syz-fuzzer
70332 340511 31333 0 3 0x4000082 thrsleep syz-fuzzer
70332 180809 31333 0 3 0x4000082 thrsleep syz-fuzzer
70332 235815 31333 0 3 0x4000082 thrsleep syz-fuzzer
70332 71936 31333 0 3 0x4000082 thrsleep syz-fuzzer
70332 384910 31333 0 3 0x4000082 thrsleep syz-fuzzer
70332 249655 31333 0 3 0x4000082 thrsleep syz-fuzzer
70332 240442 31333 0 3 0x4000082 thrsleep syz-fuzzer
70332 309283 31333 0 3 0x4000082 thrsleep syz-fuzzer
70332 250603 31333 0 3 0x4000082 thrsleep syz-fuzzer
31333 175274 66900 0 3 0x10008a pause ksh
66900 5302 19025 0 3 0x92 select sshd
90184 52323 1 0 3 0x100083 ttyin getty
19025 508478 1 0 3 0x80 select sshd
81810 42938 26595 74 3 0x100092 bpf pflogd
26595 330048 1 0 3 0x80 netio pflogd
41534 421611 22047 73 3 0x100090 kqread syslogd
22047 397559 1 0 3 0x100082 netio syslogd
96632 510408 1 77 3 0x100090 poll dhclient
88966 337145 1 0 3 0x80 poll dhclient
21789 251284 0 0 2 0x14200 zerothread
3849 203806 0 0 3 0x14200 aiodoned aiodoned
53475 157157 0 0 3 0x14200 syncer update
83216 274543 0 0 3 0x14200 cleaner cleaner
73423 451164 0 0 3 0x14200 reaper reaper
78117 37300 0 0 3 0x14200 pgdaemon pagedaemon
75431 185671 0 0 3 0x14200 bored crynlk
6589 469026 0 0 3 0x14200 bored crypto
95193 39310 0 0 3 0x40014200 acpi0 acpi0
20198 392823 0 0 3 0x40014200 idle1
22639 69550 0 0 3 0x14200 bored softnet
29593 3672 0 0 3 0x14200 bored systqmp
35563 110640 0 0 3 0x14200 bored systq
6931 191464 0 0 3 0x40014200 bored softclock
32258 409260 0 0 3 0x40014200 idle0
36139 84813 0 0 3 0x14200 bored smr
1 476200 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
Process 32849 (syz-executor.1) thread 0xffff800020ac93d8 (451016)
exclusive rwlock netlock r = 0 (0xffffffff82471638)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1163
#1 pfioctl+0x15f sys/net/pf_ioctl.c:1028
#2 VOP_IOCTL+0x88 sys/kern/vfs_vops.c:291
#3 vn_ioctl+0xb7 sys/kern/vfs_vnops.c:533
#4 sys_ioctl+0x5b9
#5 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline]
#5 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
#6 Xsyscall+0x128
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8261e160)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1163
#1 syscall+0x400 mi_syscall sys/sys/syscall_mi.h:83 [inline]
#1 syscall+0x400 sys/arch/amd64/amd64/trap.c:555
#2 Xsyscall+0x128
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 9477 6414K 6801K 78643K 41703 0
pcb 13 8K 8K 78643K 1442 0
rtable 115 5K 6K 78643K 271 0
ifaddr 45 10K 10K 78643K 53 0
counters 39 33K 33K 78643K 39 0
ioctlops 0 0K 4K 78643K 2201 0
iov 0 0K 16K 78643K 1350 0
mount 1 1K 1K 78643K 1 0
vnodes 1265 79K 79K 78643K 27969 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 9K 78643K 192 0
VM map 2 1K 1K 78643K 2 0
sem 12 0K 0K 78643K 194 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1809 196K 290K 78643K 12766 0
file desc 6 17K 25K 78643K 24673 0
sigio 1 0K 0K 78643K 564 0
proc 61 63K 83K 78643K 638 0
subproc 32 2K 2K 78643K 51 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 49 0
in_multi 33 2K 2K 78643K 44 0
ether_multi 1 0K 0K 78643K 1 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 49 228K 228K 78643K 49 0
exec 0 0K 1K 78643K 248 0
pagedep 1 8K 8K 78643K 1 0
inodedep 1 32K 32K 78643K 1 0
newblk 1 0K 0K 78643K 1 0
VM swap 7 26K 26K 78643K 7 0
UVM amap 203 27K 28K 78643K 56655 0
UVM aobj 130 4K 4K 78643K 198 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 8 0
NDP 6 0K 0K 78643K 13 0
temp 111 3028K 3094K 78643K 105697 0
kqueue 0 0K 0K 78643K 13 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
arp 64 8 0 2 1 0 1 1 0
8 0
plcache 128 20 0 0 1 0 1 1 0
8 0
rtpcb 80 126 0 124 1 0 1 1 0
8 0
rtentry 112 55 0 11 2 0 2 2 0
8 0
unpcb 120 17356 0 17342 5 4 1 2 0
8 0
syncache 264 4 0 4 1 1 0 1 0
8 0
sackhl 24 2 0 2 2 2 0 1 0
8 0
tcpcb 544 218 0 214 1 0 1 1 0
8 0
inpcb 280 20657 0 20648 37 35 2 3 0
8 1
nd6 48 6 0 2 1 0 1 1 0
8 0
pkpcb 40 21 0 21 1 1 0 1 0
8 0
pffrag 232 8 0 8 2 2 0 1 0
482 0
pffrnode 88 8 0 8 2 2 0 1 0
8 0
pffrent 40 24 0 24 2 2 0 1 0
8 0
pfosfp 40 846 0 846 5 5 0 5 0
8 0
pfosfpen 112 1428 0 1428 21 21 0 21 0
8 0
pfrktable 1344 4 0 1 1 0 1 1 0
8 0
pfstitem 24 18 0 15 1 0 1 1 0
8 0
pfstkey 112 18 0 15 1 0 1 1 0
8 0
pfstate 328 18 0 15 1 0 1 1 0
8 0
pfrule 1360 50 0 16 4 1 3 3 0
8 0
art_heap8 4096 1 0 0 1 0 1 1 0
8 0
art_heap4 256 256 0 43 14 0 14 14 0
8 0
art_table 32 257 0 43 2 0 2 2 0
8 0
art_node 16 54 0 14 1 0 1 1 0
8 0
semapl 112 192 0 182 1 0 1 1 0
8 0
shmpl 112 196 0 68 4 0 4 4 0
8 0
dirhash 1024 17 0 0 3 0 3 3 0
8 0
dino1pl 128 27487 0 26075 46 0 46 46 0
8 0
ffsino 272 27487 0 26075 95 0 95 95 0
8 0
nchpl 144 58817 0 57140 66 3 63 63 0
8 0
uvmvnodes 72 5926 0 0 108 0 108 108 0
8 0
vnodes 208 5926 0 0 312 0 312 312 0
8 0
namei 1024 172752 0 172752 1 0 1 1 0
8 1
percpumem 16 30 0 0 1 0 1 1 0
8 0
pfiaddrpl 120 7 0 0 1 0 1 1 0
8 0
scxspl 192 159846 0 159846 9 8 1 7 0
8 1
plimitpl 152 113 0 105 1 0 1 1 0
8 0
sigapl 432 24869 0 24853 3 1 2 3 0
8 0
futexpl 56 182423 0 182422 1 0 1 1 0
8 0
knotepl 112 251 0 232 1 0 1 1 0
8 0
kqueuepl 104 831 0 829 1 0 1 1 0
8 0
pipepl 112 10772 0 10751 2 1 1 2 0
8 0
fdescpl 488 24870 0 24853 3 0 3 3 0
8 0
filepl 152 133109 0 132996 56 50 6 8 0
8 1
lockfpl 104 2964 0 2963 1 0 1 1 0
8 0
lockfspl 48 1432 0 1431 1 0 1 1 0
8 0
sessionpl 112 19 0 8 1 0 1 1 0
8 0
pgrppl 48 774 0 763 1 0 1 1 0
8 0
ucredpl 96 15342 0 15333 1 0 1 1 0
8 0
zombiepl 144 24853 0 24853 1 0 1 1 0
8 1
processpl 904 24886 0 24853 4 0 4 4 0
8 0
procpl 632 55703 0 55657 26 21 5 5 0
8 1
srpgc 64 2 0 2 1 1 0 1 0
8 0
sosppl 128 4 0 4 2 2 0 1 0
8 0
sockpl 384 38368 0 38343 67 63 4 8 0
8 1
mcl64k 65536 17 0 0 3 0 3 3 0
8 0
mcl16k 16384 25 0 0 4 1 3 3 0
8 0
mcl12k 12288 33 0 0 2 0 2 2 0
8 0
mcl9k 9216 49 0 0 2 0 2 2 0
8 0
mcl8k 8192 31 0 0 3 0 3 3 0
8 0
mcl4k 4096 33 0 0 3 0 3 3 0
8 0
mcl2k2 2112 10 0 0 1 0 1 1 0
8 0
mcl2k 2048 419 0 0 27 20 7 25 0
8 0
mtagpl 80 10 0 0 1 0 1 1 0
8 0
mbufpl 256 1036 0 0 13 0 13 13 0
8 0
bufpl 280 31924 0 24854 506 0 506 506 0
8 0
anonpl 16 1510079 0 1502212 41 3 38 39 0
125 0
amapchunkpl 152 87536 0 87424 8 3 5 6 0
158 0
amappl16 192 110660 0 110173 25 0 25 25 0
8 0
amappl15 184 61 0 58 1 0 1 1 0
8 0
amappl14 176 37 0 34 1 0 1 1 0
8 0
amappl13 168 5938 0 5937 1 0 1 1 0
8 0
amappl12 160 3 0 2 2 1 1 1 0
8 0
amappl11 152 61 0 46 1 0 1 1 0
8 0
amappl10 144 16 0 11 1 0 1 1 0
8 0
amappl9 136 7228 0 7223 1 0 1 1 0
8 0
amappl8 128 6972 0 6865 4 0 4 4 0
8 0
amappl7 120 111 0 98 1 0 1 1 0
8 0
amappl6 112 73 0 60 1 0 1 1 0
8 0
amappl5 104 341 0 327 1 0 1 1 0
8 0
amappl4 96 24965 0 24932 2 1 1 2 0
8 0
amappl3 88 1061 0 1052 1 0 1 1 0
8 0
amappl2 80 202035 0 201954 3 1 2 3 0
8 0
amappl1 72 443777 0 443299 25 15 10 20 0
8 0
amappl 80 55963 0 55918 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 18 0 17 1 0 1 1 0
8 0
aobjpl 64 197 0 68 3 0 3 3 0
8 0
uaddrrnd 24 24870 0 24853 1 0 1 1 0
8 0
uaddrbest 32 2 0 0 1 0 1 1 0
8 0
uaddr 24 24870 0 24853 1 0 1 1 0
8 0
vmmpekpl 168 129902 0 129868 3 1 2 2 0
8 0
vmmpepl 168 2780843 0 2778963 149 66 83 88 0
357 1
vmsppl 368 24869 0 24853 2 0 2 2 0
8 0
pdppl 4096 49747 0 49706 6 0 6 6 0
8 0
pvpl 32 4814271 0 4803048 183 81 102 118 0
265 0
pmappl 232 24869 0 24853 2 1 1 2 0
8 0
extentpl 40 46 0 29 1 0 1 1 0
8 0
phpool 112 186 0 24 5 0 5 5 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
Jan 3, 2020, 6:10:11 AM1/3/20
to syzkaller-o...@googlegroups.com
syzbot has found a reproducer for the following crash on:
HEAD commit: e22fe1b6 avoid build race condition: our make has an "expe..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=158919fee00000
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+92be14...@syzkaller.appspotmail.com
login: panic: unhandled af 12
*222504 46834 0 0 0x4000000 1K syz-executor.0
sys/net/pf.c:409
pfioctl(4900,c0504417,ffff800020b73ce0,1,ffff800020ac98c8) at
pfioctl+0x43cf sys/net/pf_ioctl.c:1827
VOP_IOCTL(fffffd806f6c4020,c0504417,ffff800020b73ce0,1,fffffd807f7becc0,ffff800020ac98c8)
at
VOP_IOCTL+0x88 sys/kern/vfs_vops.c:291
vn_ioctl(fffffd806cf134d0,c0504417,ffff800020b73ce0,ffff800020ac98c8) at
vn_ioctl+0xb7 sys/kern/vfs_vnops.c:533
sys_ioctl(ffff800020ac98c8,ffff800020b73df8,ffff800020b73e40) at
sys_ioctl+0x5b9
syscall(ffff800020b73ec0) at syscall+0x4a4 mi_syscall
sys/sys/syscall_mi.h:92 [inline]
syscall(ffff800020b73ec0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
unhandled af 12
ddb{1}> trace
sys/net/pf.c:409
pfioctl(4900,c0504417,ffff800020b73ce0,1,ffff800020ac98c8) at
pfioctl+0x43cf sys/net/pf_ioctl.c:1827
VOP_IOCTL(fffffd806f6c4020,c0504417,ffff800020b73ce0,1,fffffd807f7becc0,ffff800020ac98c8)
at
VOP_IOCTL+0x88 sys/kern/vfs_vops.c:291
vn_ioctl(fffffd806cf134d0,c0504417,ffff800020b73ce0,ffff800020ac98c8) at
vn_ioctl+0xb7 sys/kern/vfs_vnops.c:533
sys_ioctl(ffff800020ac98c8,ffff800020b73df8,ffff800020b73e40) at
sys_ioctl+0x5b9
syscall(ffff800020b73ec0) at syscall+0x4a4 mi_syscall
sys/sys/syscall_mi.h:92 [inline]
syscall(ffff800020b73ec0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
ddb{1}> show registers
rdi 0
rsi 0x1
rbp 0xffff800020b738a0
rbx 0xffff800020b73950
rdx 0x8b
rcx 0x2
rax 0x1
r11 0x8684bff7694655db
r12 0x3000000008
r13 0xffff800020b738b0
PROC (syz-executor.0) pid=222504 stat=onproc
flags process=0 proc=4000000<THREAD>
pri=50, usrpri=50, nice=20
forw=0xffffffffffffffff, list=0xffff800020ac8ee8,0xffff800020ac8c80
process=0xffff800020af4ab0 user=0xffff800020b6e000,
vmspace=0xfffffd807efffcf0
*46834 222504 74386 0 7 0x4000000 syz-executor.0
46834 339057 74386 0 2 0x4000000 syz-executor.0
74386 405330 69836 0 3 0x82 nanosleep syz-executor.0
69836 329654 98405 0 3 0x82 thrsleep syz-execprog
69836 242854 98405 0 3 0x4000082 nanosleep syz-execprog
69836 55497 98405 0 3 0x4000082 thrsleep syz-execprog
69836 3764 98405 0 3 0x4000082 thrsleep syz-execprog
69836 231375 98405 0 3 0x4000082 thrsleep syz-execprog
69836 249569 98405 0 3 0x4000082 thrsleep syz-execprog
69836 259905 98405 0 3 0x4000082 thrsleep syz-execprog
69836 70632 98405 0 3 0x4000082 kqread syz-execprog
98405 283809 23364 0 3 0x10008a pause ksh
23364 66585 89350 0 3 0x92 select sshd
83781 396291 1 0 3 0x100083 ttyin getty
89350 47909 1 0 3 0x80 select sshd
91192 353648 77313 74 3 0x100092 bpf pflogd
77313 360952 1 0 3 0x80 netio pflogd
45120 25082 81623 73 3 0x100090 kqread syslogd
81623 298403 1 0 3 0x100082 netio syslogd
67012 338693 1 77 3 0x100090 poll dhclient
17611 205171 1 0 3 0x80 poll dhclient
10938 36093 0 0 3 0x14200 pgzero zerothread
13363 123103 0 0 3 0x14200 aiodoned aiodoned
32597 135311 0 0 3 0x14200 syncer update
91149 494336 0 0 3 0x14200 cleaner cleaner
48857 203465 0 0 3 0x14200 reaper reaper
24577 124242 0 0 3 0x14200 pgdaemon pagedaemon
32386 428339 0 0 3 0x14200 bored crynlk
36387 102223 0 0 3 0x14200 bored crypto
71441 388569 0 0 3 0x40014200 acpi0 acpi0
70179 154372 0 0 3 0x40014200 idle1
24531 385778 0 0 3 0x14200 bored softnet
48209 160283 0 0 3 0x14200 bored systqmp
75764 498561 0 0 3 0x14200 bored systq
72081 221124 0 0 3 0x40014200 bored softclock
93481 383824 0 0 3 0x40014200 idle0
84724 182951 0 0 3 0x14200 bored smr
1 318290 0 0 3 0x82 wait init
Process 46834 (syz-executor.0) thread 0xffff800020ac98c8 (222504)
pcb 13 8K 8K 78643K 13 0
rtable 83 2K 2K 78643K 165 0
ifaddr 37 9K 9K 78643K 38 0
proc 59 63K 83K 78643K 398 0
exec 0 0K 1K 78643K 197 0
UVM aobj 2 2K 2K 78643K 2 0
temp 32 3010K 3073K 78643K 3320 0
8 0
rtentry 112 34 0 1 1 0 1 1 0
8 0
unpcb 120 33 0 23 1 0 1 1 0
8 0
syncache 264 5 0 5 2 1 1 1 0
8 1
tcpcb 544 8 0 5 1 0 1 1 0
8 0
inpcb 280 35 0 27 1 0 1 1 0
8 0
nd6 48 2 0 0 1 0 1 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 10 0 0 1 0 1 1 0
8 0
pfstkey 112 10 0 0 1 0 1 1 0
8 0
pfstate 328 10 0 0 1 0 1 1 0
8 0
pfrule 1360 21 0 16 2 1 1 2 0
8 0
8 0
art_table 32 169 0 0 2 0 2 2 0
8 0
art_node 16 33 0 3 1 0 1 1 0
8 0
8 0
ffsino 272 1424 0 20 94 0 94 94 0
8 0
nchpl 144 1650 0 38 60 0 60 60 0
8 0
uvmvnodes 72 1434 0 0 27 0 27 27 0
8 0
vnodes 208 1434 0 0 76 0 76 76 0
8 0
namei 1024 4158 0 4158 2 1 1 1 0
8 1
plimitpl 152 15 0 8 1 0 1 1 0
8 0
sigapl 432 225 0 211 2 0 2 2 0
8 0
futexpl 56 6 0 6 1 0 1 1 0
8 1
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 112 148 0 135 2 1 1 1 0
8 0
fdescpl 488 226 0 211 3 0 3 3 0
8 0
filepl 152 1143 0 1081 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 144 211 0 211 2 1 1 1 0
8 1
processpl 904 241 0 211 4 0 4 4 0
8 0
procpl 632 250 0 211 4 0 4 4 0
8 0
sockpl 384 85 0 65 3 0 3 3 0
8 0
mcl4k 4096 3 0 0 1 0 1 1 0
8 0
mcl2k 2048 56 0 0 7 0 7 7 0
8 0
mtagpl 80 2 0 0 1 0 1 1 0
8 0
mbufpl 256 93 0 0 5 0 5 5 0
8 0
bufpl 280 5948 0 1340 330 0 330 330 0
8 0
anonpl 16 22254 0 20648 15 2 13 13 0
125 5
amapchunkpl 152 795 0 723 5 0 5 5 0
158 2
amappl16 192 74 0 50 3 1 2 2 0
8 0
amappl15 184 58 0 54 1 0 1 1 0
8 0
amappl14 176 23 0 20 2 1 1 1 0
8 0
amappl13 168 1 0 0 1 0 1 1 0
8 0
amappl12 160 8 0 4 2 1 1 1 0
8 0
amappl11 152 53 0 38 1 0 1 1 0
8 0
amappl10 144 19 0 15 1 0 1 1 0
8 0
amappl9 136 436 0 434 1 0 1 1 0
8 0
amappl8 128 90 0 80 1 0 1 1 0
8 0
amappl7 120 99 0 88 1 0 1 1 0
8 0
amappl6 112 57 0 54 1 0 1 1 0
8 0
amappl5 104 127 0 114 1 0 1 1 0
8 0
amappl4 96 493 0 464 1 0 1 1 0
8 0
amappl3 88 122 0 115 1 0 1 1 0
8 0
amappl2 80 975 0 904 4 1 3 3 0
8 1
amappl1 72 15434 0 14980 27 9 18 21 0
8 8
amappl 80 475 0 444 1 0 1 1 0
8 0
uaddrrnd 24 226 0 211 1 0 1 1 0
8 0
vmmpekpl 168 6186 0 6164 2 0 2 2 0
8 0
vmmpepl 168 33033 0 32014 90 9 81 81 0 357
36
vmsppl 368 225 0 211 2 0 2 2 0
8 0
pdppl 4096 459 0 422 6 0 6 6 0
8 1
pvpl 32 112559 0 108493 117 2 115 115 0 265
81
pmappl 232 225 0 211 1 0 1 1 0
8 0
8 0
ddb{1}>
HEAD commit: e22fe1b6 avoid build race condition: our make has an "expe..
git tree: openbsd
kernel config: https://syzkaller.appspot.com/x/.config?x=bf87b6915a88cd0d
dashboard link: https://syzkaller.appspot.com/bug?extid=92be143c2dd1746cf2af
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15d58971e00000
dashboard link: https://syzkaller.appspot.com/bug?extid=92be143c2dd1746cf2af
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+92be14...@syzkaller.appspotmail.com
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
283871 46834 0 0 0 0 syz-executor.0
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*222504 46834 0 0 0x4000000 1K syz-executor.0
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff821d7d9a) at panic+0x15c sys/kern/subr_prf.c:207
unhandled_af(c) at unhandled_af+0x16
pf_addrcpy(ffff800020b739e8,ffff800020b73ce0,c) at pf_addrcpy+0x99
panic(ffffffff821d7d9a) at panic+0x15c sys/kern/subr_prf.c:207
unhandled_af(c) at unhandled_af+0x16
sys/net/pf.c:409
pfioctl(4900,c0504417,ffff800020b73ce0,1,ffff800020ac98c8) at
pfioctl+0x43cf sys/net/pf_ioctl.c:1827
VOP_IOCTL(fffffd806f6c4020,c0504417,ffff800020b73ce0,1,fffffd807f7becc0,ffff800020ac98c8)
at
VOP_IOCTL+0x88 sys/kern/vfs_vops.c:291
vn_ioctl(fffffd806cf134d0,c0504417,ffff800020b73ce0,ffff800020ac98c8) at
vn_ioctl+0xb7 sys/kern/vfs_vnops.c:533
sys_ioctl(ffff800020ac98c8,ffff800020b73df8,ffff800020b73e40) at
sys_ioctl+0x5b9
syscall(ffff800020b73ec0) at syscall+0x4a4 mi_syscall
sys/sys/syscall_mi.h:92 [inline]
syscall(ffff800020b73ec0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xdd7c43ab9d0, count: 5
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{1}>
reports. Insufficient info makes it difficult to find and fix bugs.
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
unhandled af 12
ddb{1}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff821d7d9a) at panic+0x15c sys/kern/subr_prf.c:207
unhandled_af(c) at unhandled_af+0x16
pf_addrcpy(ffff800020b739e8,ffff800020b73ce0,c) at pf_addrcpy+0x99
panic(ffffffff821d7d9a) at panic+0x15c sys/kern/subr_prf.c:207
unhandled_af(c) at unhandled_af+0x16
sys/net/pf.c:409
pfioctl(4900,c0504417,ffff800020b73ce0,1,ffff800020ac98c8) at
pfioctl+0x43cf sys/net/pf_ioctl.c:1827
VOP_IOCTL(fffffd806f6c4020,c0504417,ffff800020b73ce0,1,fffffd807f7becc0,ffff800020ac98c8)
at
VOP_IOCTL+0x88 sys/kern/vfs_vops.c:291
vn_ioctl(fffffd806cf134d0,c0504417,ffff800020b73ce0,ffff800020ac98c8) at
vn_ioctl+0xb7 sys/kern/vfs_vnops.c:533
sys_ioctl(ffff800020ac98c8,ffff800020b73df8,ffff800020b73e40) at
sys_ioctl+0x5b9
syscall(ffff800020b73ec0) at syscall+0x4a4 mi_syscall
sys/sys/syscall_mi.h:92 [inline]
syscall(ffff800020b73ec0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xdd7c43ab9d0, count: -10
end of kernel
ddb{1}> show registers
rdi 0
rsi 0x1
rbp 0xffff800020b738a0
rbx 0xffff800020b73950
rdx 0x8b
rcx 0x2
rax 0x1
r8 0xffffffff81dfe84f kprintf+0x16f
r9 0x1
r10 0xe38342cd4dfcee8d
r9 0x1
r11 0x8684bff7694655db
r12 0x3000000008
r13 0xffff800020b738b0
r14 0x100
r15 0x1
rip 0xffffffff81f3d998 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff800020b73890
r15 0x1
rip 0xffffffff81f3d998 db_enter+0x18
cs 0x8
rflags 0x246
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb{1}> show proc
db_enter+0x18: addq $0x8,%rsp
PROC (syz-executor.0) pid=222504 stat=onproc
flags process=0 proc=4000000<THREAD>
pri=50, usrpri=50, nice=20
forw=0xffffffffffffffff, list=0xffff800020ac8ee8,0xffff800020ac8c80
process=0xffff800020af4ab0 user=0xffff800020b6e000,
vmspace=0xfffffd807efffcf0
estcpu=36, cpticks=0, pctcpu=0.0
user=0, sys=0, intr=0
ddb{1}> ps
user=0, sys=0, intr=0
PID TID PPID UID S FLAGS WAIT COMMAND
46834 283871 74386 0 7 0 syz-executor.0
*46834 222504 74386 0 7 0x4000000 syz-executor.0
46834 339057 74386 0 2 0x4000000 syz-executor.0
74386 405330 69836 0 3 0x82 nanosleep syz-executor.0
69836 329654 98405 0 3 0x82 thrsleep syz-execprog
69836 242854 98405 0 3 0x4000082 nanosleep syz-execprog
69836 55497 98405 0 3 0x4000082 thrsleep syz-execprog
69836 3764 98405 0 3 0x4000082 thrsleep syz-execprog
69836 231375 98405 0 3 0x4000082 thrsleep syz-execprog
69836 249569 98405 0 3 0x4000082 thrsleep syz-execprog
69836 259905 98405 0 3 0x4000082 thrsleep syz-execprog
69836 70632 98405 0 3 0x4000082 kqread syz-execprog
98405 283809 23364 0 3 0x10008a pause ksh
23364 66585 89350 0 3 0x92 select sshd
83781 396291 1 0 3 0x100083 ttyin getty
89350 47909 1 0 3 0x80 select sshd
91192 353648 77313 74 3 0x100092 bpf pflogd
77313 360952 1 0 3 0x80 netio pflogd
45120 25082 81623 73 3 0x100090 kqread syslogd
81623 298403 1 0 3 0x100082 netio syslogd
67012 338693 1 77 3 0x100090 poll dhclient
17611 205171 1 0 3 0x80 poll dhclient
10938 36093 0 0 3 0x14200 pgzero zerothread
13363 123103 0 0 3 0x14200 aiodoned aiodoned
32597 135311 0 0 3 0x14200 syncer update
91149 494336 0 0 3 0x14200 cleaner cleaner
48857 203465 0 0 3 0x14200 reaper reaper
24577 124242 0 0 3 0x14200 pgdaemon pagedaemon
32386 428339 0 0 3 0x14200 bored crynlk
36387 102223 0 0 3 0x14200 bored crypto
71441 388569 0 0 3 0x40014200 acpi0 acpi0
70179 154372 0 0 3 0x40014200 idle1
24531 385778 0 0 3 0x14200 bored softnet
48209 160283 0 0 3 0x14200 bored systqmp
75764 498561 0 0 3 0x14200 bored systq
72081 221124 0 0 3 0x40014200 bored softclock
93481 383824 0 0 3 0x40014200 idle0
84724 182951 0 0 3 0x14200 bored smr
1 318290 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
Process 46834 (syz-executor.0) thread 0xffff800020ac98c8 (222504)
exclusive rwlock netlock r = 0 (0xffffffff82471638)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1163
#1 pfioctl+0x15f sys/net/pf_ioctl.c:1028
#2 VOP_IOCTL+0x88 sys/kern/vfs_vops.c:291
#3 vn_ioctl+0xb7 sys/kern/vfs_vnops.c:533
#4 sys_ioctl+0x5b9
#5 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline]
#5 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
#6 Xsyscall+0x128
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8261e160)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1163
#1 syscall+0x400 mi_syscall sys/sys/syscall_mi.h:83 [inline]
#1 syscall+0x400 sys/arch/amd64/amd64/trap.c:555
#2 Xsyscall+0x128
ddb{1}> show malloc
#0 witness_lock+0x52e sys/kern/subr_witness.c:1163
#1 pfioctl+0x15f sys/net/pf_ioctl.c:1028
#2 VOP_IOCTL+0x88 sys/kern/vfs_vops.c:291
#3 vn_ioctl+0xb7 sys/kern/vfs_vnops.c:533
#4 sys_ioctl+0x5b9
#5 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline]
#5 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
#6 Xsyscall+0x128
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8261e160)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1163
#1 syscall+0x400 mi_syscall sys/sys/syscall_mi.h:83 [inline]
#1 syscall+0x400 sys/arch/amd64/amd64/trap.c:555
#2 Xsyscall+0x128
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 9465 6395K 6395K 78643K 10556 0
pcb 13 8K 8K 78643K 13 0
rtable 83 2K 2K 78643K 165 0
ifaddr 37 9K 9K 78643K 38 0
counters 39 33K 33K 78643K 39 0
ioctlops 0 0K 4K 78643K 1468 0
mount 1 1K 1K 78643K 1 0
vnodes 1181 74K 74K 78643K 1186 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 1K 78643K 2 0
UFS mount 5 36K 36K 78643K 5 0
VM map 2 1K 1K 78643K 2 0
sem 2 0K 0K 78643K 2 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1809 196K 290K 78643K 12766 0
file desc 3 8K 12K 78643K 18 0
ACPI 1809 196K 290K 78643K 12766 0
proc 59 63K 83K 78643K 398 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
in_multi 22 1K 1K 78643K 22 0
NFS daemon 1 16K 16K 78643K 1 0
ether_multi 1 0K 0K 78643K 1 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 19 95K 95K 78643K 19 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
exec 0 0K 1K 78643K 197 0
pagedep 1 8K 8K 78643K 1 0
inodedep 1 32K 32K 78643K 1 0
newblk 1 0K 0K 78643K 1 0
VM swap 7 26K 26K 78643K 7 0
UVM amap 82 12K 12K 78643K 975 0
inodedep 1 32K 32K 78643K 1 0
newblk 1 0K 0K 78643K 1 0
VM swap 7 26K 26K 78643K 7 0
UVM aobj 2 2K 2K 78643K 2 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
NDP 7 0K 0K 78643K 7 0
crypto data 1 1K 1K 78643K 1 0
temp 32 3010K 3073K 78643K 3320 0
SYN cache 2 16K 16K 78643K 2 0
ddb{1}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg
Idle
arp 64 4 0 0 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 1 1 0 1 1 0
8 0
unpcb 120 33 0 23 1 0 1 1 0
8 0
syncache 264 5 0 5 2 1 1 1 0
8 1
tcpcb 544 8 0 5 1 0 1 1 0
8 0
inpcb 280 35 0 27 1 0 1 1 0
8 0
nd6 48 2 0 0 1 0 1 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 10 0 0 1 0 1 1 0
8 0
pfstkey 112 10 0 0 1 0 1 1 0
8 0
pfstate 328 10 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
art_heap4 256 168 0 0 11 0 11 11 0
8 0
8 0
art_table 32 169 0 0 2 0 2 2 0
8 0
art_node 16 33 0 3 1 0 1 1 0
8 0
dirhash 1024 17 0 0 3 0 3 3 0
8 0
dino1pl 128 1424 0 20 46 0 46 46 0
8 0
8 0
ffsino 272 1424 0 20 94 0 94 94 0
8 0
nchpl 144 1650 0 38 60 0 60 60 0
8 0
uvmvnodes 72 1434 0 0 27 0 27 27 0
8 0
vnodes 208 1434 0 0 76 0 76 76 0
8 0
namei 1024 4158 0 4158 2 1 1 1 0
8 1
percpumem 16 30 0 0 1 0 1 1 0
8 0
scxspl 192 4117 0 4117 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 432 225 0 211 2 0 2 2 0
8 0
futexpl 56 6 0 6 1 0 1 1 0
8 1
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 112 148 0 135 2 1 1 1 0
8 0
fdescpl 488 226 0 211 3 0 3 3 0
8 0
filepl 152 1143 0 1081 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 144 211 0 211 2 1 1 1 0
8 1
processpl 904 241 0 211 4 0 4 4 0
8 0
procpl 632 250 0 211 4 0 4 4 0
8 0
sockpl 384 85 0 65 3 0 3 3 0
8 0
mcl4k 4096 3 0 0 1 0 1 1 0
8 0
mcl2k 2048 56 0 0 7 0 7 7 0
8 0
mtagpl 80 2 0 0 1 0 1 1 0
8 0
mbufpl 256 93 0 0 5 0 5 5 0
8 0
bufpl 280 5948 0 1340 330 0 330 330 0
8 0
anonpl 16 22254 0 20648 15 2 13 13 0
125 5
amapchunkpl 152 795 0 723 5 0 5 5 0
158 2
amappl16 192 74 0 50 3 1 2 2 0
8 0
amappl15 184 58 0 54 1 0 1 1 0
8 0
amappl14 176 23 0 20 2 1 1 1 0
8 0
amappl13 168 1 0 0 1 0 1 1 0
8 0
amappl12 160 8 0 4 2 1 1 1 0
8 0
amappl11 152 53 0 38 1 0 1 1 0
8 0
amappl10 144 19 0 15 1 0 1 1 0
8 0
amappl9 136 436 0 434 1 0 1 1 0
8 0
amappl8 128 90 0 80 1 0 1 1 0
8 0
amappl7 120 99 0 88 1 0 1 1 0
8 0
amappl6 112 57 0 54 1 0 1 1 0
8 0
amappl5 104 127 0 114 1 0 1 1 0
8 0
amappl4 96 493 0 464 1 0 1 1 0
8 0
amappl3 88 122 0 115 1 0 1 1 0
8 0
amappl2 80 975 0 904 4 1 3 3 0
8 1
amappl1 72 15434 0 14980 27 9 18 21 0
8 8
amappl 80 475 0 444 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
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
8 0
uaddrrnd 24 226 0 211 1 0 1 1 0
8 0
uaddrbest 32 2 0 0 1 0 1 1 0
8 0
uaddr 24 226 0 211 1 0 1 1 0
uaddrbest 32 2 0 0 1 0 1 1 0
8 0
8 0
vmmpekpl 168 6186 0 6164 2 0 2 2 0
8 0
vmmpepl 168 33033 0 32014 90 9 81 81 0 357
36
vmsppl 368 225 0 211 2 0 2 2 0
8 0
pdppl 4096 459 0 422 6 0 6 6 0
8 1
pvpl 32 112559 0 108493 117 2 115 115 0 265
81
pmappl 232 225 0 211 1 0 1 1 0
8 0
extentpl 40 46 0 29 1 0 1 1 0
8 0
phpool 112 141 0 4 4 0 4 4 0
8 0
8 0
ddb{1}>
syzbot
Jan 3, 2020, 6:42:10 AM1/3/20
to syzkaller-o...@googlegroups.com
syzbot has found a reproducer for the following crash on:
HEAD commit: e22fe1b6 avoid build race condition: our make has an "expe..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=1649ce15e00000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1485c6b9e00000
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+92be14...@syzkaller.appspotmail.com
login: panic: unhandled af 0
418029 65764 0 0x12 0 1 sshd
pf_addrcpy(ffff800020b1aef8,ffff800020b1b1f0,0) at pf_addrcpy+0x99
sys/net/pf.c:409
pfioctl(4900,c0504417,ffff800020b1b1f0,1,ffff800020ad8010) at
pfioctl+0x43cf sys/net/pf_ioctl.c:1827
VOP_IOCTL(fffffd806f6cd360,c0504417,ffff800020b1b1f0,1,fffffd807f7be960,ffff800020ad8010)
at
VOP_IOCTL+0x88 sys/kern/vfs_vops.c:291
vn_ioctl(fffffd807726cb48,c0504417,ffff800020b1b1f0,ffff800020ad8010) at
vn_ioctl+0xb7 sys/kern/vfs_vnops.c:533
sys_ioctl(ffff800020ad8010,ffff800020b1b308,ffff800020b1b350) at
sys_ioctl+0x5b9
syscall(ffff800020b1b3d0) at syscall+0x4a4 mi_syscall
sys/sys/syscall_mi.h:92 [inline]
syscall(ffff800020b1b3d0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
pf_addrcpy(ffff800020b1aef8,ffff800020b1b1f0,0) at pf_addrcpy+0x99
sys/net/pf.c:409
pfioctl(4900,c0504417,ffff800020b1b1f0,1,ffff800020ad8010) at
pfioctl+0x43cf sys/net/pf_ioctl.c:1827
VOP_IOCTL(fffffd806f6cd360,c0504417,ffff800020b1b1f0,1,fffffd807f7be960,ffff800020ad8010)
at
VOP_IOCTL+0x88 sys/kern/vfs_vops.c:291
vn_ioctl(fffffd807726cb48,c0504417,ffff800020b1b1f0,ffff800020ad8010) at
vn_ioctl+0xb7 sys/kern/vfs_vnops.c:533
sys_ioctl(ffff800020ad8010,ffff800020b1b308,ffff800020b1b350) at
sys_ioctl+0x5b9
syscall(ffff800020b1b3d0) at syscall+0x4a4 mi_syscall
sys/sys/syscall_mi.h:92 [inline]
syscall(ffff800020b1b3d0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
rbp 0xffff800020b1adb0
rbx 0xffff800020b1ae60
r11 0xf665b2eda11a7d66
r12 0x3000000008
r13 0xffff800020b1adc0
flags process=2<EXEC> proc=0
pri=55, usrpri=55, nice=20
forw=0xffffffffffffffff, list=0xffff800020ad9158,0xffffffff82623980
process=0xffff800020aa2e30 user=0xffff800020b16000,
vmspace=0xfffffd806e7ac738
estcpu=5, cpticks=1, pctcpu=0.0
user=0, sys=1, intr=0
7484 33041 65764 0 3 0x10008a pause ksh
65764 418029 79424 0 7 0x12 sshd
70273 167258 1 0 3 0x100083 ttyin getty
79424 75019 1 0 3 0x80 select sshd
78750 521666 13035 74 3 0x100092 bpf pflogd
13035 492831 1 0 3 0x80 netio pflogd
60502 182800 16925 73 3 0x100090 kqread syslogd
16925 454247 1 0 3 0x100082 netio syslogd
55311 304130 1 77 3 0x100090 poll dhclient
48653 6440 1 0 3 0x80 poll dhclient
4473 397383 0 0 3 0x14200 pgzero zerothread
18039 500865 0 0 3 0x14200 aiodoned aiodoned
53 203989 0 0 3 0x14200 syncer update
68871 11892 0 0 3 0x14200 cleaner cleaner
6244 517957 0 0 3 0x14200 reaper reaper
55735 270555 0 0 3 0x14200 pgdaemon pagedaemon
74135 508795 0 0 3 0x14200 bored crynlk
66851 442842 0 0 3 0x14200 bored crypto
67467 32370 0 0 3 0x40014200 acpi0 acpi0
73355 402318 0 0 3 0x40014200 idle1
20275 316376 0 0 3 0x14200 bored softnet
41026 151323 0 0 3 0x14200 bored systqmp
45962 392753 0 0 3 0x14200 bored systq
99167 261102 0 0 3 0x40014200 bored softclock
48668 64127 0 0 3 0x40014200 idle0
4338 1734 0 0 3 0x14200 bored smr
1 238076 0 0 3 0x82 wait init
exclusive rwlock pipeglk r = 0 (0xffffffff824a30f0)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1163
#1 pipe_read+0x1ac sys/kern/sys_pipe.c:409
#2 dofilereadv+0x1a2 sys/kern/sys_generic.c:236
#3 sys_read+0x83 sys/kern/sys_generic.c:156
#4 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline]
#4 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
#5 Xsyscall+0x128
pcb 13 8K 8K 78643K 13 0
rtable 61 2K 2K 78643K 127 0
ifaddr 29 8K 8K 78643K 30 0
proc 59 63K 71K 78643K 358 0
exec 0 0K 1K 78643K 177 0
UVM aobj 2 2K 2K 78643K 2 0
temp 26 3007K 3071K 78643K 1978 0
8 0
8 0
rtentry 112 23 0 1 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 29 0 23 1 0 1 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 8 0 0 1 0 1 1 0
8 0
pfstkey 112 8 0 0 1 0 1 1 0
8 0
pfstate 328 8 0 0 1 0 1 1 0
8 0
pfrule 1360 21 0 16 2 1 1 2 0
8 0
8 0
art_table 32 97 0 0 1 0 1 1 0
8 0
art_node 16 22 0 2 1 0 1 1 0
8 0
8 0
ffsino 272 1401 0 16 93 0 93 93 0
8 0
nchpl 144 1577 0 34 58 0 58 58 0
8 0
uvmvnodes 72 1411 0 0 26 0 26 26 0
8 0
vnodes 208 1411 0 0 75 0 75 75 0
8 0
namei 1024 3773 0 3773 1 0 1 1 0
8 2
plimitpl 152 14 0 8 1 0 1 1 0
8 0
sigapl 432 204 0 192 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 112 128 0 121 1 0 1 1 0
8 0
fdescpl 488 205 0 192 3 0 3 3 0
8 0
filepl 152 997 0 948 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 18 0 9 1 0 1 1 0
8 0
pgrppl 48 18 0 9 1 0 1 1 0
8 0
ucredpl 96 52 0 43 1 0 1 1 0
8 0
zombiepl 144 192 0 192 1 0 1 1 0
8 1
processpl 904 220 0 192 4 0 4 4 0
8 0
procpl 632 220 0 192 3 0 3 3 0
8 0
sockpl 384 73 0 55 2 0 2 2 0
8 0
mcl4k 4096 2 0 0 1 0 1 1 0
8 0
mcl2k 2048 72 0 0 9 0 9 9 0
8 0
mtagpl 80 2 0 0 1 0 1 1 0
8 0
mbufpl 256 90 0 0 6 0 6 6 0
8 0
bufpl 280 2200 0 274 138 0 138 138 0
8 0
anonpl 16 19267 0 18019 7 1 6 7 0
125 0
amapchunkpl 152 525 0 487 2 0 2 2 0
158 0
amappl16 192 30 0 28 1 0 1 1 0
8 0
amappl15 184 50 0 47 1 0 1 1 0
8 0
amappl14 176 15 0 14 1 0 1 1 0
8 0
amappl12 160 1 0 1 1 0 1 1 0
8 1
amappl11 152 53 0 38 1 0 1 1 0
8 0
amappl10 144 6 0 3 1 0 1 1 0
8 0
amappl9 136 420 0 419 1 0 1 1 0
8 0
amappl8 128 68 0 64 1 0 1 1 0
8 0
amappl7 120 76 0 68 1 0 1 1 0
8 0
amappl6 112 48 0 45 1 0 1 1 0
8 0
amappl5 104 135 0 119 1 0 1 1 0
8 0
amappl4 96 466 0 440 1 0 1 1 0
8 0
amappl3 88 108 0 101 1 0 1 1 0
8 0
amappl2 80 778 0 720 2 0 2 2 0
8 0
amappl1 72 13874 0 13449 15 3 12 15 0
8 2
amappl 80 408 0 387 1 0 1 1 0
8 0
uaddrrnd 24 205 0 192 1 0 1 1 0
8 0
vmmpekpl 168 5347 0 5326 1 0 1 1 0
8 0
vmmpepl 168 29796 0 28940 49 2 47 49 0
357 5
vmsppl 368 204 0 192 2 0 2 2 0
8 0
pdppl 4096 417 0 384 5 0 5 5 0
8 0
pvpl 32 79275 0 76270 29 0 29 29 0
265 2
pmappl 232 204 0 192 1 0 1 1 0
8 0
8 0
HEAD commit: e22fe1b6 avoid build race condition: our make has an "expe..
git tree: openbsd
kernel config: https://syzkaller.appspot.com/x/.config?x=bf87b6915a88cd0d
dashboard link: https://syzkaller.appspot.com/bug?extid=92be143c2dd1746cf2af
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11557ab9e00000
dashboard link: https://syzkaller.appspot.com/bug?extid=92be143c2dd1746cf2af
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1485c6b9e00000
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+92be14...@syzkaller.appspotmail.com
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*431504 21063 0 0x2 0 0K syz-executor1752
TID PID UID PRFLAGS PFLAGS CPU COMMAND
418029 65764 0 0x12 0 1 sshd
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff821d7d9a) at panic+0x15c sys/kern/subr_prf.c:207
unhandled_af(0) at unhandled_af+0x16
panic(ffffffff821d7d9a) at panic+0x15c sys/kern/subr_prf.c:207
pf_addrcpy(ffff800020b1aef8,ffff800020b1b1f0,0) at pf_addrcpy+0x99
sys/net/pf.c:409
pfioctl(4900,c0504417,ffff800020b1b1f0,1,ffff800020ad8010) at
pfioctl+0x43cf sys/net/pf_ioctl.c:1827
VOP_IOCTL(fffffd806f6cd360,c0504417,ffff800020b1b1f0,1,fffffd807f7be960,ffff800020ad8010)
at
VOP_IOCTL+0x88 sys/kern/vfs_vops.c:291
vn_ioctl(fffffd807726cb48,c0504417,ffff800020b1b1f0,ffff800020ad8010) at
vn_ioctl+0xb7 sys/kern/vfs_vnops.c:533
sys_ioctl(ffff800020ad8010,ffff800020b1b308,ffff800020b1b350) at
sys_ioctl+0x5b9
syscall(ffff800020b1b3d0) at syscall+0x4a4 mi_syscall
sys/sys/syscall_mi.h:92 [inline]
syscall(ffff800020b1b3d0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffe3020, count: 5
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}>
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
unhandled af 0
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
ddb{0}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff821d7d9a) at panic+0x15c sys/kern/subr_prf.c:207
unhandled_af(0) at unhandled_af+0x16
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff821d7d9a) at panic+0x15c sys/kern/subr_prf.c:207
pf_addrcpy(ffff800020b1aef8,ffff800020b1b1f0,0) at pf_addrcpy+0x99
sys/net/pf.c:409
pfioctl(4900,c0504417,ffff800020b1b1f0,1,ffff800020ad8010) at
pfioctl+0x43cf sys/net/pf_ioctl.c:1827
VOP_IOCTL(fffffd806f6cd360,c0504417,ffff800020b1b1f0,1,fffffd807f7be960,ffff800020ad8010)
at
VOP_IOCTL+0x88 sys/kern/vfs_vops.c:291
vn_ioctl(fffffd807726cb48,c0504417,ffff800020b1b1f0,ffff800020ad8010) at
vn_ioctl+0xb7 sys/kern/vfs_vnops.c:533
sys_ioctl(ffff800020ad8010,ffff800020b1b308,ffff800020b1b350) at
sys_ioctl+0x5b9
syscall(ffff800020b1b3d0) at syscall+0x4a4 mi_syscall
sys/sys/syscall_mi.h:92 [inline]
syscall(ffff800020b1b3d0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffe3020, count: -10
end of kernel
ddb{0}> show registers
rdi 0
rsi 0x1
rdi 0
rbp 0xffff800020b1adb0
rbx 0xffff800020b1ae60
rdx 0x8b
rcx 0x2
rax 0x1
rcx 0x2
rax 0x1
r8 0xffffffff81dfe84f kprintf+0x16f
r9 0x1
r10 0x7736dfac603f6f46
r9 0x1
r11 0xf665b2eda11a7d66
r12 0x3000000008
r13 0xffff800020b1adc0
r14 0x100
r15 0x1
rip 0xffffffff81f3d998 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff800020b1ada0
r15 0x1
rip 0xffffffff81f3d998 db_enter+0x18
cs 0x8
rflags 0x246
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb{0}> show proc
PROC (syz-executor1752) pid=431504 stat=onproc
db_enter+0x18: addq $0x8,%rsp
ddb{0}> show proc
flags process=2<EXEC> proc=0
pri=55, usrpri=55, nice=20
forw=0xffffffffffffffff, list=0xffff800020ad9158,0xffffffff82623980
process=0xffff800020aa2e30 user=0xffff800020b16000,
vmspace=0xfffffd806e7ac738
estcpu=5, cpticks=1, pctcpu=0.0
user=0, sys=1, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
*21063 431504 7484 0 7 0x2 syz-executor1752
PID TID PPID UID S FLAGS WAIT COMMAND
7484 33041 65764 0 3 0x10008a pause ksh
65764 418029 79424 0 7 0x12 sshd
70273 167258 1 0 3 0x100083 ttyin getty
79424 75019 1 0 3 0x80 select sshd
78750 521666 13035 74 3 0x100092 bpf pflogd
13035 492831 1 0 3 0x80 netio pflogd
60502 182800 16925 73 3 0x100090 kqread syslogd
16925 454247 1 0 3 0x100082 netio syslogd
55311 304130 1 77 3 0x100090 poll dhclient
48653 6440 1 0 3 0x80 poll dhclient
4473 397383 0 0 3 0x14200 pgzero zerothread
18039 500865 0 0 3 0x14200 aiodoned aiodoned
53 203989 0 0 3 0x14200 syncer update
68871 11892 0 0 3 0x14200 cleaner cleaner
6244 517957 0 0 3 0x14200 reaper reaper
55735 270555 0 0 3 0x14200 pgdaemon pagedaemon
74135 508795 0 0 3 0x14200 bored crynlk
66851 442842 0 0 3 0x14200 bored crypto
67467 32370 0 0 3 0x40014200 acpi0 acpi0
73355 402318 0 0 3 0x40014200 idle1
20275 316376 0 0 3 0x14200 bored softnet
41026 151323 0 0 3 0x14200 bored systqmp
45962 392753 0 0 3 0x14200 bored systq
99167 261102 0 0 3 0x40014200 bored softclock
48668 64127 0 0 3 0x40014200 idle0
4338 1734 0 0 3 0x14200 bored smr
1 238076 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
Process 21063 (syz-executor1752) thread 0xffff800020ad8010 (431504)
ddb{0}> show all locks
exclusive rwlock netlock r = 0 (0xffffffff82471638)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1163
#1 pfioctl+0x15f sys/net/pf_ioctl.c:1028
#2 VOP_IOCTL+0x88 sys/kern/vfs_vops.c:291
#3 vn_ioctl+0xb7 sys/kern/vfs_vnops.c:533
#4 sys_ioctl+0x5b9
#5 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline]
#5 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
#6 Xsyscall+0x128
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8261e160)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1163
#1 syscall+0x400 mi_syscall sys/sys/syscall_mi.h:83 [inline]
#1 syscall+0x400 sys/arch/amd64/amd64/trap.c:555
#2 Xsyscall+0x128
Process 65764 (sshd) thread 0xffff800020ad98c0 (418029)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1163
#1 pfioctl+0x15f sys/net/pf_ioctl.c:1028
#2 VOP_IOCTL+0x88 sys/kern/vfs_vops.c:291
#3 vn_ioctl+0xb7 sys/kern/vfs_vnops.c:533
#4 sys_ioctl+0x5b9
#5 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline]
#5 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
#6 Xsyscall+0x128
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8261e160)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1163
#1 syscall+0x400 mi_syscall sys/sys/syscall_mi.h:83 [inline]
#1 syscall+0x400 sys/arch/amd64/amd64/trap.c:555
#2 Xsyscall+0x128
exclusive rwlock pipeglk r = 0 (0xffffffff824a30f0)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1163
#1 pipe_read+0x1ac sys/kern/sys_pipe.c:409
#2 dofilereadv+0x1a2 sys/kern/sys_generic.c:236
#3 sys_read+0x83 sys/kern/sys_generic.c:156
#4 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline]
#4 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
#5 Xsyscall+0x128
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 9461 6393K 6394K 78643K 10552 0
Type InUse MemUse HighUse Limit Requests Type Lim
pcb 13 8K 8K 78643K 13 0
rtable 61 2K 2K 78643K 127 0
ifaddr 29 8K 8K 78643K 30 0
counters 39 33K 33K 78643K 39 0
ioctlops 0 0K 4K 78643K 1467 0
mount 1 1K 1K 78643K 1 0
vnodes 1181 74K 74K 78643K 1186 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 1K 78643K 2 0
UFS mount 5 36K 36K 78643K 5 0
VM map 2 1K 1K 78643K 2 0
sem 2 0K 0K 78643K 2 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1809 196K 290K 78643K 12766 0
file desc 1 0K 0K 78643K 1 0
ACPI 1809 196K 290K 78643K 12766 0
proc 59 63K 71K 78643K 358 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
in_multi 11 0K 0K 78643K 11 0
NFS daemon 1 16K 16K 78643K 1 0
ether_multi 1 0K 0K 78643K 1 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 19 95K 95K 78643K 19 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
exec 0 0K 1K 78643K 177 0
pagedep 1 8K 8K 78643K 1 0
inodedep 1 32K 32K 78643K 1 0
newblk 1 0K 0K 78643K 1 0
VM swap 7 26K 26K 78643K 7 0
UVM amap 66 3K 4K 78643K 816 0
inodedep 1 32K 32K 78643K 1 0
newblk 1 0K 0K 78643K 1 0
VM swap 7 26K 26K 78643K 7 0
UVM aobj 2 2K 2K 78643K 2 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
NDP 4 0K 0K 78643K 4 0
crypto data 1 1K 1K 78643K 1 0
temp 26 3007K 3071K 78643K 1978 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
arp 64 2 0 0 1 0 1 1 0
ddb{0}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg
Idle
8 0
plcache 128 20 0 0 1 0 1 1 0
8 0
rtpcb 80 15 0 13 1 0 1 1 0
8 0
8 0
rtentry 112 23 0 1 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 29 0 23 1 0 1 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 8 0 0 1 0 1 1 0
8 0
pfstkey 112 8 0 0 1 0 1 1 0
8 0
pfstate 328 8 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
art_heap4 256 96 0 0 6 0 6 6 0
8 0
8 0
art_table 32 97 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 1401 0 16 45 0 45 45 0
8 0
8 0
ffsino 272 1401 0 16 93 0 93 93 0
8 0
nchpl 144 1577 0 34 58 0 58 58 0
8 0
uvmvnodes 72 1411 0 0 26 0 26 26 0
8 0
vnodes 208 1411 0 0 75 0 75 75 0
8 0
namei 1024 3773 0 3773 1 0 1 1 0
8 1
percpumem 16 30 0 0 1 0 1 1 0
8 0
scxspl 192 2519 0 2519 2 0 2 2 0
percpumem 16 30 0 0 1 0 1 1 0
8 0
8 2
plimitpl 152 14 0 8 1 0 1 1 0
8 0
sigapl 432 204 0 192 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 112 128 0 121 1 0 1 1 0
8 0
fdescpl 488 205 0 192 3 0 3 3 0
8 0
filepl 152 997 0 948 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 18 0 9 1 0 1 1 0
8 0
pgrppl 48 18 0 9 1 0 1 1 0
8 0
ucredpl 96 52 0 43 1 0 1 1 0
8 0
zombiepl 144 192 0 192 1 0 1 1 0
8 1
processpl 904 220 0 192 4 0 4 4 0
8 0
procpl 632 220 0 192 3 0 3 3 0
8 0
sockpl 384 73 0 55 2 0 2 2 0
8 0
mcl4k 4096 2 0 0 1 0 1 1 0
8 0
mcl2k 2048 72 0 0 9 0 9 9 0
8 0
mtagpl 80 2 0 0 1 0 1 1 0
8 0
mbufpl 256 90 0 0 6 0 6 6 0
8 0
bufpl 280 2200 0 274 138 0 138 138 0
8 0
anonpl 16 19267 0 18019 7 1 6 7 0
125 0
amapchunkpl 152 525 0 487 2 0 2 2 0
158 0
amappl16 192 30 0 28 1 0 1 1 0
8 0
amappl15 184 50 0 47 1 0 1 1 0
8 0
amappl14 176 15 0 14 1 0 1 1 0
8 0
amappl12 160 1 0 1 1 0 1 1 0
8 1
amappl11 152 53 0 38 1 0 1 1 0
8 0
amappl10 144 6 0 3 1 0 1 1 0
8 0
amappl9 136 420 0 419 1 0 1 1 0
8 0
amappl8 128 68 0 64 1 0 1 1 0
8 0
amappl7 120 76 0 68 1 0 1 1 0
8 0
amappl6 112 48 0 45 1 0 1 1 0
8 0
amappl5 104 135 0 119 1 0 1 1 0
8 0
amappl4 96 466 0 440 1 0 1 1 0
8 0
amappl3 88 108 0 101 1 0 1 1 0
8 0
amappl2 80 778 0 720 2 0 2 2 0
8 0
amappl1 72 13874 0 13449 15 3 12 15 0
8 2
amappl 80 408 0 387 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
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
8 0
uaddrrnd 24 205 0 192 1 0 1 1 0
8 0
uaddrbest 32 2 0 0 1 0 1 1 0
8 0
uaddr 24 205 0 192 1 0 1 1 0
uaddrbest 32 2 0 0 1 0 1 1 0
8 0
8 0
vmmpekpl 168 5347 0 5326 1 0 1 1 0
8 0
vmmpepl 168 29796 0 28940 49 2 47 49 0
357 5
vmsppl 368 204 0 192 2 0 2 2 0
8 0
pdppl 4096 417 0 384 5 0 5 5 0
8 0
pvpl 32 79275 0 76270 29 0 29 29 0
265 2
pmappl 232 204 0 192 1 0 1 1 0
8 0
extentpl 40 46 0 29 1 0 1 1 0
8 0
phpool 112 136 0 3 4 0 4 4 0
8 0
8 0
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