uvm_fault: witness_checkorder
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syzbot
Oct 19, 2019, 6:07:09 PM10/19/19
to syzkaller-o...@googlegroups.com
Hello,
syzbot found the following crash on:
HEAD commit: b1a12106 Don't check that the ipv6 source address of a nei..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=178f3ab0e00000
kernel config: https://syzkaller.appspot.com/x/.config?x=26ca0a9c07f16a3a
dashboard link: https://syzkaller.appspot.com/bug?extid=e5df02aad1d9e0ca30dd
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+e5df02...@syzkaller.appspotmail.com
login: uvm_fault(0xfffffd807f00a8a0, 0x8, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at witness_checkorder+0x121: movl 0x8(%r15),%ebx
ddb{0}>
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
kernel page fault
uvm_fault(0xfffffd807f00a8a0, 0x8, 0, 1) -> e
witness_checkorder(ffff800000b15618,9,0) at witness_checkorder+0x121
sys/kern/subr_witness.c:776
end trace frame: 0xffff800021b614a0, count: 0
ddb{0}> trace
witness_checkorder(ffff800000b15618,9,0) at witness_checkorder+0x121
sys/kern/subr_witness.c:776
mtx_enter(ffff800000b15608) at mtx_enter+0x3a sys/kern/kern_lock.c:265
filt_bpfread(fffffd806ebc47e0,0) at filt_bpfread+0x4e sys/net/bpf.c:1210
kqueue_register(fffffd80774ef9c0,ffff800021b61590,ffff800020abe508) at
kqueue_register+0x425 sys/kern/kern_event.c:664
sys_kevent(ffff800020abe508,ffff800021b61758,ffff800021b617a0) at
sys_kevent+0x2b1 sys/kern/kern_event.c:527
syscall(ffff800021b61820) at syscall+0x4a4 mi_syscall
sys/sys/syscall_mi.h:92 [inline]
syscall(ffff800021b61820) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
Xsyscall(6,0,ffffffffffffff80,0,6,d0aabf3b0e0) at Xsyscall+0x128
end of kernel
end trace frame: 0xd0d7d32fe50, count: -7
ddb{0}> show registers
rdi 0xffffffff81165884 witness_checkorder+0xf4
rsi 0x9e
rbp 0xffff800021b61460
rbx 0x70
rdx 0x9f
rcx 0xffff800022198000
rax 0xffffffff8248eff0 cpu_info_full_primary+0x1ff0
r8 0x7f7fffffc000
r9 0x23
r10 0x9d41ae5cece846fc
r11 0xe3e2b839bfb6c6ef
r12 0xdeafbeaddeafbead
r13 0
r14 0xffff800020abe508
r15 0
rip 0xffffffff811658b1 witness_checkorder+0x121
cs 0x8
rflags 0x10246 __ALIGN_SIZE+0xf246
rsp 0xffff800021b613c0
ss 0x10
witness_checkorder+0x121: movl 0x8(%r15),%ebx
ddb{0}> show proc
PROC (syz-executor.0) pid=64818 stat=onproc
flags process=0 proc=4000000<THREAD>
pri=73, usrpri=73, nice=20
forw=0xffffffffffffffff, list=0xffff800020abe290,0xffff800020abf660
process=0xffff800020adc700 user=0xffff800021b5c000,
vmspace=0xfffffd807f00a8a0
estcpu=23, cpticks=0, pctcpu=0.0
user=0, sys=0, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
69271 307634 46182 0 7 0 syz-executor.0
69271 52978 46182 0 3 0x4000080 kqread syz-executor.0
*69271 64818 46182 0 7 0x4000000 syz-executor.0
69271 226207 46182 0 3 0x4000080 fsleep syz-executor.0
35537 108562 25026 0 3 0x82 piperd syz-executor.1
46182 313657 25026 0 3 0x82 nanosleep syz-executor.0
50269 464683 1 0 3 0x100083 ttyin getty
19147 329310 0 0 3 0x14200 acct acct
28094 80777 0 0 3 0x14200 bored sosplice
25026 101273 40061 0 3 0x82 thrsleep syz-fuzzer
25026 411793 40061 0 3 0x4000082 thrsleep syz-fuzzer
25026 17543 40061 0 3 0x4000082 thrsleep syz-fuzzer
25026 352848 40061 0 3 0x4000082 thrsleep syz-fuzzer
25026 266285 40061 0 3 0x4000082 thrsleep syz-fuzzer
25026 79635 40061 0 3 0x4000082 thrsleep syz-fuzzer
25026 184148 40061 0 3 0x4000082 thrsleep syz-fuzzer
25026 305381 40061 0 3 0x4000082 thrsleep syz-fuzzer
25026 36445 40061 0 3 0x4000082 thrsleep syz-fuzzer
25026 120802 40061 0 3 0x4000082 kqread syz-fuzzer
40061 307005 8614 0 3 0x10008a pause ksh
8614 364784 13949 0 3 0x92 select sshd
13949 229173 1 0 3 0x80 select sshd
27173 259621 84213 74 3 0x100092 bpf pflogd
84213 221156 1 0 3 0x80 netio pflogd
21883 410786 64830 73 3 0x100090 kqread syslogd
64830 142625 1 0 3 0x100082 netio syslogd
76803 17248 1 77 3 0x100090 poll dhclient
36813 156561 1 0 3 0x80 poll dhclient
94582 147946 0 0 3 0x14200 pgzero zerothread
12781 103077 0 0 3 0x14200 aiodoned aiodoned
82979 459560 0 0 3 0x14200 syncer update
26402 225365 0 0 3 0x14200 cleaner cleaner
85772 365486 0 0 3 0x14200 reaper reaper
70950 247597 0 0 3 0x14200 pgdaemon pagedaemon
26574 335984 0 0 3 0x14200 bored crynlk
55824 184174 0 0 3 0x14200 bored crypto
2285 451802 0 0 3 0x40014200 acpi0 acpi0
99711 151982 0 0 3 0x40014200 idle1
52581 127726 0 0 3 0x14200 bored softnet
65224 488382 0 0 3 0x14200 bored systqmp
71445 243519 0 0 3 0x14200 bored systq
62163 355424 0 0 3 0x40014200 bored softclock
37997 473953 0 0 3 0x40014200 idle0
63267 170163 0 0 3 0x14200 bored smr
1 414532 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
Process 69271 (syz-executor.0) thread 0xffff800020abe508 (64818)
exclusive kernel_lock &kernel_lock r = 1 (0xffffffff82622388)
#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 Kern Lim
devbuf 9600 6462K 8472K 78643K 26972 0 0
pcb 13 12K 14K 78643K 831 0 0
rtable 107 13K 14K 78643K 2452 0 0
ifaddr 97 21K 24K 78643K 789 0 0
counters 39 33K 33K 78643K 39 0 0
ioctlops 0 0K 4K 78643K 1694 0 0
iov 0 0K 44K 78643K 763 0 0
mount 1 1K 1K 78643K 1 0 0
vnodes 1244 78K 78K 78643K 7515 0 0
UFS quota 1 32K 32K 78643K 1 0 0
UFS mount 5 36K 36K 78643K 5 0 0
shm 2 1K 9K 78643K 52 0 0
VM map 29 14K 14K 78643K 48 0 0
sem 12 0K 1K 78643K 725 0 0
dirhash 12 2K 2K 78643K 12 0 0
ACPI 1808 196K 290K 78643K 12765 0 0
file desc 5 13K 25K 78643K 3728 0 0
sigio 0 0K 0K 78643K 55 0 0
proc 62 63K 95K 78643K 1620 0 0
subproc 32 2K 2K 78643K 381 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 532 0 0
in_multi 27 1K 2K 78643K 457 0 0
ether_multi 1 0K 0K 78643K 47 0 0
mrt 0 0K 0K 78643K 18 0 0
ISOFS mount 1 32K 32K 78643K 1 0 0
MSDOSFS mount 1 16K 16K 78643K 1 0 0
ttys 78 344K 344K 78643K 78 0 0
exec 0 0K 1K 78643K 838 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 164 299K 300K 78643K 15266 0 0
UVM aobj 130 4K 4K 78643K 130 0 0
memdesc 1 4K 4K 78643K 1 0 0
crypto data 1 1K 1K 78643K 1 0 0
ip6_options 0 0K 0K 78643K 809 0 0
NDP 22 0K 1K 78643K 240 0 0
temp 244 3563K 4204K 78643K 174104 0 0
kqueue 0 0K 0K 78643K 70 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 72 0 67 1 0 1 1 0
8 0
plcache 128 20 0 0 1 0 1 1 0
8 0
rtpcb 80 364 0 361 1 0 1 1 0
8 0
rtentry 112 406 0 370 2 0 2 2 0
8 0
unpcb 120 2163 0 2151 5 4 1 2 0
8 0
syncache 264 27 0 27 10 10 0 1 0
8 0
tcpqe 32 19 0 19 8 8 0 1 0
8 0
tcpcb 544 2034 0 2029 36 35 1 12 0
8 0
inpcb 280 5526 0 5517 49 47 2 13 0
8 1
rttmr 72 4 0 3 3 2 1 1 0
8 0
nd6 48 59 0 57 4 3 1 1 0
8 0
pkpcb 40 53 0 53 10 10 0 1 0
8 0
swfcl 56 2 0 0 1 0 1 1 0
8 0
ppxss 1128 98 0 98 19 18 1 1 0
8 1
pffrag 232 96 0 96 17 17 0 1 0
482 0
pffrnode 88 95 0 95 17 17 0 1 0
8 0
pffrent 40 2806 0 2806 17 17 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 24 325 0 265 1 0 1 1 0
8 0
pfstkey 112 325 0 265 2 0 2 2 0
8 0
pfstate 328 325 0 264 6 0 6 6 0
8 0
pfrule 1360 21 0 16 2 1 1 2 0
8 0
art_heap8 4096 11 0 10 7 6 1 3 0
8 0
art_heap4 256 1772 0 1573 36 21 15 16 0
8 0
art_table 32 1783 0 1583 4 2 2 3 0
8 0
art_node 16 402 0 369 1 0 1 1 0
8 0
sysvmsgpl 40 66 0 38 1 0 1 1 0
8 0
semupl 112 3 0 3 1 1 0 1 0
8 0
semapl 112 723 0 713 1 0 1 1 0
8 0
shmpl 112 128 0 0 4 0 4 4 0
8 0
dirhash 1024 17 0 0 3 0 3 3 0
8 0
dino1pl 128 7038 0 5624 46 0 46 46 0
8 0
ffsino 272 7038 0 5624 95 0 95 95 0
8 0
nchpl 144 13388 0 12930 61 40 21 61 0
8 0
uvmvnodes 72 6194 0 0 113 0 113 113 0
8 0
vnodes 208 6194 0 0 326 0 326 326 0
8 0
namei 1024 48879 0 48879 1 0 1 1 0
8 1
percpumem 16 30 0 0 1 0 1 1 0
8 0
vcpupl 1984 27 0 0 4 0 4 4 0
8 0
vmpool 552 46 0 19 4 2 2 2 0
8 0
scsiplug 64 4 0 4 4 3 1 1 0
8 1
scxspl 192 43004 0 43004 34 33 1 7 0
8 1
plimitpl 152 304 0 296 1 0 1 1 0
8 0
sigapl 432 3870 0 3855 3 1 2 3 0
8 0
futexpl 56 88682 0 88681 1 0 1 1 0
8 0
knotepl 112 6129 0 6109 20 18 2 2 0
8 1
kqueuepl 104 7092 0 7088 10 9 1 4 0
8 0
pipepl 112 2566 0 2547 11 10 1 2 0
8 0
fdescpl 488 3871 0 3855 3 0 3 3 0
8 0
filepl 152 41347 0 41239 57 50 7 14 0
8 2
lockfpl 104 1282 0 1281 1 0 1 1 0
8 0
lockfspl 48 436 0 435 1 0 1 1 0
8 0
sessionpl 112 40 0 29 1 0 1 1 0
8 0
pgrppl 48 80 0 69 1 0 1 1 0
8 0
ucredpl 96 3640 0 3630 1 0 1 1 0
8 0
zombiepl 144 3856 0 3856 1 0 1 1 0
8 1
processpl 896 3889 0 3856 4 0 4 4 0
8 0
procpl 632 13371 0 13326 5 0 5 5 0
8 0
srpgc 64 30 0 30 12 12 0 1 0
8 0
sosppl 128 64 0 64 15 15 0 1 0
8 0
sockpl 384 8156 0 8131 65 59 6 22 0
8 2
mcl64k 65536 644 0 0 66 32 34 35 0
8 0
mcl16k 16384 12 0 0 2 0 2 2 0
8 0
mcl12k 12288 41 0 0 2 0 2 2 0
8 0
mcl9k 9216 11 0 0 1 0 1 1 0
8 0
mcl8k 8192 25 0 0 4 1 3 3 0
8 0
mcl4k 4096 20 0 0 3 1 2 3 0
8 0
mcl2k2 2112 13 0 0 1 0 1 1 0
8 0
mcl2k 2048 183 0 0 21 1 20 21 0
8 0
mtagpl 80 53 0 0 2 0 2 2 0
8 0
mbufpl 256 1074 0 0 46 1 45 45 0
8 0
bufpl 256 21617 0 14569 441 0 441 441 0
8 0
anonpl 16 522654 0 505432 226 141 85 96 0
124 4
amapchunkpl 152 31001 0 30871 84 75 9 13 0
158 0
amappl16 192 23843 0 22721 238 181 57 69 0
8 0
amappl15 184 391 0 391 2 2 0 1 0
8 0
amappl14 176 1626 0 1622 1 0 1 1 0
8 0
amappl13 168 24 0 23 3 2 1 1 0
8 0
amappl12 160 293 0 291 6 5 1 1 0
8 0
amappl11 152 296 0 280 1 0 1 1 0
8 0
amappl10 144 362 0 358 1 0 1 1 0
8 0
amappl9 136 1372 0 1364 1 0 1 1 0
8 0
amappl8 128 967 0 926 2 0 2 2 0
8 0
amappl7 120 467 0 459 1 0 1 1 0
8 0
amappl6 112 288 0 273 1 0 1 1 0
8 0
amappl5 104 593 0 577 1 0 1 1 0
8 0
amappl4 96 4032 0 4004 1 0 1 1 0
8 0
amappl3 88 1019 0 1011 1 0 1 1 0
8 0
amappl2 80 29089 0 29013 3 1 2 3 0
8 0
amappl1 72 99165 0 98708 25 15 10 20 0
8 0
amappl 80 14017 0 13955 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 64 129 0 0 3 0 3 3 0
8 0
uaddrrnd 24 3917 0 3855 1 0 1 1 0
8 0
uaddrbest 32 2 0 0 1 0 1 1 0
8 0
uaddr 24 3917 0 3855 1 0 1 1 0
8 0
vmmpekpl 168 36495 0 36451 3 0 3 3 0
8 0
vmmpepl 168 505046 0 502699 428 279 149 151 0 357
37
vmsppl 368 3870 0 3855 2 0 2 2 0
8 0
pdppl 4096 7841 0 7775 9 0 9 9 0
8 0
pvpl 32 1430117 0 1410108 444 243 201 220 0 265
18
pmappl 232 3916 0 3874 7 4 3 3 0
8 0
extentpl 40 41 0 26 1 0 1 1 0
8 0
phpool 112 776 0 101 20 0 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: b1a12106 Don't check that the ipv6 source address of a nei..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=178f3ab0e00000
kernel config: https://syzkaller.appspot.com/x/.config?x=26ca0a9c07f16a3a
dashboard link: https://syzkaller.appspot.com/bug?extid=e5df02aad1d9e0ca30dd
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+e5df02...@syzkaller.appspotmail.com
login: uvm_fault(0xfffffd807f00a8a0, 0x8, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at witness_checkorder+0x121: movl 0x8(%r15),%ebx
ddb{0}>
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
kernel page fault
uvm_fault(0xfffffd807f00a8a0, 0x8, 0, 1) -> e
witness_checkorder(ffff800000b15618,9,0) at witness_checkorder+0x121
sys/kern/subr_witness.c:776
end trace frame: 0xffff800021b614a0, count: 0
ddb{0}> trace
witness_checkorder(ffff800000b15618,9,0) at witness_checkorder+0x121
sys/kern/subr_witness.c:776
mtx_enter(ffff800000b15608) at mtx_enter+0x3a sys/kern/kern_lock.c:265
filt_bpfread(fffffd806ebc47e0,0) at filt_bpfread+0x4e sys/net/bpf.c:1210
kqueue_register(fffffd80774ef9c0,ffff800021b61590,ffff800020abe508) at
kqueue_register+0x425 sys/kern/kern_event.c:664
sys_kevent(ffff800020abe508,ffff800021b61758,ffff800021b617a0) at
sys_kevent+0x2b1 sys/kern/kern_event.c:527
syscall(ffff800021b61820) at syscall+0x4a4 mi_syscall
sys/sys/syscall_mi.h:92 [inline]
syscall(ffff800021b61820) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
Xsyscall(6,0,ffffffffffffff80,0,6,d0aabf3b0e0) at Xsyscall+0x128
end of kernel
end trace frame: 0xd0d7d32fe50, count: -7
ddb{0}> show registers
rdi 0xffffffff81165884 witness_checkorder+0xf4
rsi 0x9e
rbp 0xffff800021b61460
rbx 0x70
rdx 0x9f
rcx 0xffff800022198000
rax 0xffffffff8248eff0 cpu_info_full_primary+0x1ff0
r8 0x7f7fffffc000
r9 0x23
r10 0x9d41ae5cece846fc
r11 0xe3e2b839bfb6c6ef
r12 0xdeafbeaddeafbead
r13 0
r14 0xffff800020abe508
r15 0
rip 0xffffffff811658b1 witness_checkorder+0x121
cs 0x8
rflags 0x10246 __ALIGN_SIZE+0xf246
rsp 0xffff800021b613c0
ss 0x10
witness_checkorder+0x121: movl 0x8(%r15),%ebx
ddb{0}> show proc
PROC (syz-executor.0) pid=64818 stat=onproc
flags process=0 proc=4000000<THREAD>
pri=73, usrpri=73, nice=20
forw=0xffffffffffffffff, list=0xffff800020abe290,0xffff800020abf660
process=0xffff800020adc700 user=0xffff800021b5c000,
vmspace=0xfffffd807f00a8a0
estcpu=23, cpticks=0, pctcpu=0.0
user=0, sys=0, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
69271 307634 46182 0 7 0 syz-executor.0
69271 52978 46182 0 3 0x4000080 kqread syz-executor.0
*69271 64818 46182 0 7 0x4000000 syz-executor.0
69271 226207 46182 0 3 0x4000080 fsleep syz-executor.0
35537 108562 25026 0 3 0x82 piperd syz-executor.1
46182 313657 25026 0 3 0x82 nanosleep syz-executor.0
50269 464683 1 0 3 0x100083 ttyin getty
19147 329310 0 0 3 0x14200 acct acct
28094 80777 0 0 3 0x14200 bored sosplice
25026 101273 40061 0 3 0x82 thrsleep syz-fuzzer
25026 411793 40061 0 3 0x4000082 thrsleep syz-fuzzer
25026 17543 40061 0 3 0x4000082 thrsleep syz-fuzzer
25026 352848 40061 0 3 0x4000082 thrsleep syz-fuzzer
25026 266285 40061 0 3 0x4000082 thrsleep syz-fuzzer
25026 79635 40061 0 3 0x4000082 thrsleep syz-fuzzer
25026 184148 40061 0 3 0x4000082 thrsleep syz-fuzzer
25026 305381 40061 0 3 0x4000082 thrsleep syz-fuzzer
25026 36445 40061 0 3 0x4000082 thrsleep syz-fuzzer
25026 120802 40061 0 3 0x4000082 kqread syz-fuzzer
40061 307005 8614 0 3 0x10008a pause ksh
8614 364784 13949 0 3 0x92 select sshd
13949 229173 1 0 3 0x80 select sshd
27173 259621 84213 74 3 0x100092 bpf pflogd
84213 221156 1 0 3 0x80 netio pflogd
21883 410786 64830 73 3 0x100090 kqread syslogd
64830 142625 1 0 3 0x100082 netio syslogd
76803 17248 1 77 3 0x100090 poll dhclient
36813 156561 1 0 3 0x80 poll dhclient
94582 147946 0 0 3 0x14200 pgzero zerothread
12781 103077 0 0 3 0x14200 aiodoned aiodoned
82979 459560 0 0 3 0x14200 syncer update
26402 225365 0 0 3 0x14200 cleaner cleaner
85772 365486 0 0 3 0x14200 reaper reaper
70950 247597 0 0 3 0x14200 pgdaemon pagedaemon
26574 335984 0 0 3 0x14200 bored crynlk
55824 184174 0 0 3 0x14200 bored crypto
2285 451802 0 0 3 0x40014200 acpi0 acpi0
99711 151982 0 0 3 0x40014200 idle1
52581 127726 0 0 3 0x14200 bored softnet
65224 488382 0 0 3 0x14200 bored systqmp
71445 243519 0 0 3 0x14200 bored systq
62163 355424 0 0 3 0x40014200 bored softclock
37997 473953 0 0 3 0x40014200 idle0
63267 170163 0 0 3 0x14200 bored smr
1 414532 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
Process 69271 (syz-executor.0) thread 0xffff800020abe508 (64818)
exclusive kernel_lock &kernel_lock r = 1 (0xffffffff82622388)
#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 Kern Lim
devbuf 9600 6462K 8472K 78643K 26972 0 0
pcb 13 12K 14K 78643K 831 0 0
rtable 107 13K 14K 78643K 2452 0 0
ifaddr 97 21K 24K 78643K 789 0 0
counters 39 33K 33K 78643K 39 0 0
ioctlops 0 0K 4K 78643K 1694 0 0
iov 0 0K 44K 78643K 763 0 0
mount 1 1K 1K 78643K 1 0 0
vnodes 1244 78K 78K 78643K 7515 0 0
UFS quota 1 32K 32K 78643K 1 0 0
UFS mount 5 36K 36K 78643K 5 0 0
shm 2 1K 9K 78643K 52 0 0
VM map 29 14K 14K 78643K 48 0 0
sem 12 0K 1K 78643K 725 0 0
dirhash 12 2K 2K 78643K 12 0 0
ACPI 1808 196K 290K 78643K 12765 0 0
file desc 5 13K 25K 78643K 3728 0 0
sigio 0 0K 0K 78643K 55 0 0
proc 62 63K 95K 78643K 1620 0 0
subproc 32 2K 2K 78643K 381 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 532 0 0
in_multi 27 1K 2K 78643K 457 0 0
ether_multi 1 0K 0K 78643K 47 0 0
mrt 0 0K 0K 78643K 18 0 0
ISOFS mount 1 32K 32K 78643K 1 0 0
MSDOSFS mount 1 16K 16K 78643K 1 0 0
ttys 78 344K 344K 78643K 78 0 0
exec 0 0K 1K 78643K 838 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 164 299K 300K 78643K 15266 0 0
UVM aobj 130 4K 4K 78643K 130 0 0
memdesc 1 4K 4K 78643K 1 0 0
crypto data 1 1K 1K 78643K 1 0 0
ip6_options 0 0K 0K 78643K 809 0 0
NDP 22 0K 1K 78643K 240 0 0
temp 244 3563K 4204K 78643K 174104 0 0
kqueue 0 0K 0K 78643K 70 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 72 0 67 1 0 1 1 0
8 0
plcache 128 20 0 0 1 0 1 1 0
8 0
rtpcb 80 364 0 361 1 0 1 1 0
8 0
rtentry 112 406 0 370 2 0 2 2 0
8 0
unpcb 120 2163 0 2151 5 4 1 2 0
8 0
syncache 264 27 0 27 10 10 0 1 0
8 0
tcpqe 32 19 0 19 8 8 0 1 0
8 0
tcpcb 544 2034 0 2029 36 35 1 12 0
8 0
inpcb 280 5526 0 5517 49 47 2 13 0
8 1
rttmr 72 4 0 3 3 2 1 1 0
8 0
nd6 48 59 0 57 4 3 1 1 0
8 0
pkpcb 40 53 0 53 10 10 0 1 0
8 0
swfcl 56 2 0 0 1 0 1 1 0
8 0
ppxss 1128 98 0 98 19 18 1 1 0
8 1
pffrag 232 96 0 96 17 17 0 1 0
482 0
pffrnode 88 95 0 95 17 17 0 1 0
8 0
pffrent 40 2806 0 2806 17 17 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 24 325 0 265 1 0 1 1 0
8 0
pfstkey 112 325 0 265 2 0 2 2 0
8 0
pfstate 328 325 0 264 6 0 6 6 0
8 0
pfrule 1360 21 0 16 2 1 1 2 0
8 0
art_heap8 4096 11 0 10 7 6 1 3 0
8 0
art_heap4 256 1772 0 1573 36 21 15 16 0
8 0
art_table 32 1783 0 1583 4 2 2 3 0
8 0
art_node 16 402 0 369 1 0 1 1 0
8 0
sysvmsgpl 40 66 0 38 1 0 1 1 0
8 0
semupl 112 3 0 3 1 1 0 1 0
8 0
semapl 112 723 0 713 1 0 1 1 0
8 0
shmpl 112 128 0 0 4 0 4 4 0
8 0
dirhash 1024 17 0 0 3 0 3 3 0
8 0
dino1pl 128 7038 0 5624 46 0 46 46 0
8 0
ffsino 272 7038 0 5624 95 0 95 95 0
8 0
nchpl 144 13388 0 12930 61 40 21 61 0
8 0
uvmvnodes 72 6194 0 0 113 0 113 113 0
8 0
vnodes 208 6194 0 0 326 0 326 326 0
8 0
namei 1024 48879 0 48879 1 0 1 1 0
8 1
percpumem 16 30 0 0 1 0 1 1 0
8 0
vcpupl 1984 27 0 0 4 0 4 4 0
8 0
vmpool 552 46 0 19 4 2 2 2 0
8 0
scsiplug 64 4 0 4 4 3 1 1 0
8 1
scxspl 192 43004 0 43004 34 33 1 7 0
8 1
plimitpl 152 304 0 296 1 0 1 1 0
8 0
sigapl 432 3870 0 3855 3 1 2 3 0
8 0
futexpl 56 88682 0 88681 1 0 1 1 0
8 0
knotepl 112 6129 0 6109 20 18 2 2 0
8 1
kqueuepl 104 7092 0 7088 10 9 1 4 0
8 0
pipepl 112 2566 0 2547 11 10 1 2 0
8 0
fdescpl 488 3871 0 3855 3 0 3 3 0
8 0
filepl 152 41347 0 41239 57 50 7 14 0
8 2
lockfpl 104 1282 0 1281 1 0 1 1 0
8 0
lockfspl 48 436 0 435 1 0 1 1 0
8 0
sessionpl 112 40 0 29 1 0 1 1 0
8 0
pgrppl 48 80 0 69 1 0 1 1 0
8 0
ucredpl 96 3640 0 3630 1 0 1 1 0
8 0
zombiepl 144 3856 0 3856 1 0 1 1 0
8 1
processpl 896 3889 0 3856 4 0 4 4 0
8 0
procpl 632 13371 0 13326 5 0 5 5 0
8 0
srpgc 64 30 0 30 12 12 0 1 0
8 0
sosppl 128 64 0 64 15 15 0 1 0
8 0
sockpl 384 8156 0 8131 65 59 6 22 0
8 2
mcl64k 65536 644 0 0 66 32 34 35 0
8 0
mcl16k 16384 12 0 0 2 0 2 2 0
8 0
mcl12k 12288 41 0 0 2 0 2 2 0
8 0
mcl9k 9216 11 0 0 1 0 1 1 0
8 0
mcl8k 8192 25 0 0 4 1 3 3 0
8 0
mcl4k 4096 20 0 0 3 1 2 3 0
8 0
mcl2k2 2112 13 0 0 1 0 1 1 0
8 0
mcl2k 2048 183 0 0 21 1 20 21 0
8 0
mtagpl 80 53 0 0 2 0 2 2 0
8 0
mbufpl 256 1074 0 0 46 1 45 45 0
8 0
bufpl 256 21617 0 14569 441 0 441 441 0
8 0
anonpl 16 522654 0 505432 226 141 85 96 0
124 4
amapchunkpl 152 31001 0 30871 84 75 9 13 0
158 0
amappl16 192 23843 0 22721 238 181 57 69 0
8 0
amappl15 184 391 0 391 2 2 0 1 0
8 0
amappl14 176 1626 0 1622 1 0 1 1 0
8 0
amappl13 168 24 0 23 3 2 1 1 0
8 0
amappl12 160 293 0 291 6 5 1 1 0
8 0
amappl11 152 296 0 280 1 0 1 1 0
8 0
amappl10 144 362 0 358 1 0 1 1 0
8 0
amappl9 136 1372 0 1364 1 0 1 1 0
8 0
amappl8 128 967 0 926 2 0 2 2 0
8 0
amappl7 120 467 0 459 1 0 1 1 0
8 0
amappl6 112 288 0 273 1 0 1 1 0
8 0
amappl5 104 593 0 577 1 0 1 1 0
8 0
amappl4 96 4032 0 4004 1 0 1 1 0
8 0
amappl3 88 1019 0 1011 1 0 1 1 0
8 0
amappl2 80 29089 0 29013 3 1 2 3 0
8 0
amappl1 72 99165 0 98708 25 15 10 20 0
8 0
amappl 80 14017 0 13955 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 64 129 0 0 3 0 3 3 0
8 0
uaddrrnd 24 3917 0 3855 1 0 1 1 0
8 0
uaddrbest 32 2 0 0 1 0 1 1 0
8 0
uaddr 24 3917 0 3855 1 0 1 1 0
8 0
vmmpekpl 168 36495 0 36451 3 0 3 3 0
8 0
vmmpepl 168 505046 0 502699 428 279 149 151 0 357
37
vmsppl 368 3870 0 3855 2 0 2 2 0
8 0
pdppl 4096 7841 0 7775 9 0 9 9 0
8 0
pvpl 32 1430117 0 1410108 444 243 201 220 0 265
18
pmappl 232 3916 0 3874 7 4 3 3 0
8 0
extentpl 40 41 0 26 1 0 1 1 0
8 0
phpool 112 776 0 101 20 0 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
Oct 19, 2019, 6:32:09 PM10/19/19
to syzkaller-o...@googlegroups.com
syzbot has found a reproducer for the following crash on:
HEAD commit: b1a12106 Don't check that the ipv6 source address of a nei..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=1137f940e00000
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+e5df02...@syzkaller.appspotmail.com
sys/kern/subr_witness.c:776
end trace frame: 0xffff800020b67000, count: 0
ddb{0}> trace
witness_checkorder(ffff800000a5fe18,9,0) at witness_checkorder+0x121
sys/kern/subr_witness.c:776
mtx_enter(ffff800000a5fe08) at mtx_enter+0x3a sys/kern/kern_lock.c:265
filt_bpfread(fffffd806eb7e620,0) at filt_bpfread+0x4e sys/net/bpf.c:1210
kqueue_register(fffffd806e7f4b60,ffff800020b670f0,ffff800020ab1160) at
kqueue_register+0x425 sys/kern/kern_event.c:664
sys_kevent(ffff800020ab1160,ffff800020b672b8,ffff800020b67300) at
sys_kevent+0x2b1 sys/kern/kern_event.c:527
syscall(ffff800020b67380) at syscall+0x4a4 mi_syscall
sys/sys/syscall_mi.h:92 [inline]
syscall(ffff800020b67380) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
Xsyscall(6,0,ffffffffffffff80,0,6,6613bf580e0) at Xsyscall+0x128
end of kernel
end trace frame: 0x6637655c240, count: -7
rbp 0xffff800020b66fc0
rbx 0x70
rdx 0
rcx 0xfffffd8002fdab80
r10 0xc8f53ad9a7d7366e
r11 0x881cccb5ed16e230
r12 0xdeaf4152deaf4152
r13 0
r14 0xffff800020ab1160
flags process=0 proc=4000000<THREAD>
pri=50, usrpri=50, nice=20
forw=0xffffffffffffffff, list=0xffff800020ab13d8,0xffff800020ab0ef8
process=0xffff800020adca80 user=0xffff800020b62000,
vmspace=0xfffffd807f00a8a0
estcpu=0, cpticks=0, pctcpu=0.0
1314 453099 83188 0 3 0x4000080 kqread syz-executor.0
* 1314 403766 83188 0 7 0x4000000 syz-executor.0
1314 255455 83188 0 3 0x4000080 fsleep syz-executor.0
83188 523964 20443 0 3 0x82 nanosleep syz-executor.0
20443 195881 22637 0 3 0x82 thrsleep syz-execprog
20443 142353 22637 0 3 0x4000082 thrsleep syz-execprog
20443 266975 22637 0 3 0x4000082 thrsleep syz-execprog
20443 128235 22637 0 3 0x4000082 thrsleep syz-execprog
20443 315228 22637 0 3 0x4000082 thrsleep syz-execprog
20443 321496 22637 0 3 0x4000082 thrsleep syz-execprog
20443 395764 22637 0 3 0x4000082 thrsleep syz-execprog
20443 261453 22637 0 3 0x4000082 thrsleep syz-execprog
20443 444214 22637 0 3 0x4000082 kqread syz-execprog
22637 331214 29853 0 3 0x10008a pause ksh
29853 215402 63743 0 3 0x92 select sshd
41624 359930 1 0 3 0x100083 ttyin getty
63743 353468 1 0 3 0x80 select sshd
72874 459548 429 74 3 0x100092 bpf pflogd
429 447148 1 0 3 0x80 netio pflogd
8982 129626 11831 73 3 0x100090 kqread syslogd
11831 234052 1 0 3 0x100082 netio syslogd
73687 85203 1 77 3 0x100090 poll dhclient
23513 2481 1 0 3 0x80 poll dhclient
37129 472318 0 0 3 0x14200 pgzero zerothread
93612 198165 0 0 3 0x14200 aiodoned aiodoned
91924 329769 0 0 3 0x14200 syncer update
72336 375675 0 0 3 0x14200 cleaner cleaner
36043 278028 0 0 3 0x14200 reaper reaper
35395 126339 0 0 3 0x14200 pgdaemon pagedaemon
95711 31691 0 0 3 0x14200 bored crynlk
33224 175211 0 0 3 0x14200 bored crypto
75911 30836 0 0 3 0x40014200 acpi0 acpi0
27633 435410 0 0 3 0x40014200 idle1
48884 332799 0 0 3 0x14200 bored softnet
72101 391742 0 0 3 0x14200 bored systqmp
87152 375043 0 0 3 0x14200 bored systq
11277 412940 0 0 3 0x40014200 bored softclock
77481 77 0 0 3 0x40014200 idle0
37736 16445 0 0 3 0x14200 bored smr
1 489779 0 0 3 0x82 wait init
pcb 13 8K 8K 78643K 15 0 0
rtable 63 2K 2K 78643K 169 0 0
ifaddr 26 8K 9K 78643K 34 0 0
VM map 2 1K 1K 78643K 2 0 0
sem 2 0K 0K 78643K 2 0 0
proc 59 63K 83K 78643K 384 0 0
ether_multi 1 0K 0K 78643K 1 0 0
exec 0 0K 1K 78643K 199 0 0
UVM aobj 2 2K 2K 78643K 2 0 0
temp 41 3544K 3606K 78643K 3338 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 2 2 0 1 0
8 0
tcpcb 544 8 0 5 1 0 1 1 0
8 0
inpcb 280 34 0 27 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 2 1 0 1 1 0
8 0
pfstate 328 11 0 2 1 0 1 1 0
8 0
art_heap4 256 167 0 47 11 0 11 11 0
8 2
art_table 32 168 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 1422 0 20 94 0 94 94 0
8 0
nchpl 144 1661 0 49 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 4146 0 4146 2 1 1 1 0
8 1
plimitpl 152 15 0 8 1 0 1 1 0
8 0
sigapl 432 226 0 212 2 0 2 2 0
8 0
futexpl 56 10 0 9 1 0 1 1 0
8 0
knotepl 112 40 0 28 1 0 1 1 0
8 0
kqueuepl 104 4 0 0 1 0 1 1 0
8 0
pipepl 112 154 0 141 2 1 1 1 0
8 0
fdescpl 488 227 0 212 3 0 3 3 0
8 0
filepl 152 1128 0 1064 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 0 212 2 1 1 1 0
8 1
processpl 896 242 0 212 4 0 4 4 0
8 0
procpl 632 253 0 212 4 0 4 4 0
8 0
srpgc 64 2 0 2 1 0 1 1 0
8 1
sockpl 384 81 0 61 2 0 2 2 0
8 0
mcl4k 4096 1 0 0 1 0 1 1 0
8 0
mcl2k 2048 81 0 0 10 0 10 10 0
8 0
mtagpl 80 1 0 0 1 0 1 1 0
8 0
mbufpl 256 184 0 0 10 0 10 10 0
8 0
bufpl 256 5886 0 1315 286 0 286 286 0
8 0
anonpl 16 22252 0 20614 15 2 13 13 0
124 6
amapchunkpl 152 806 0 734 5 0 5 5 0
158 2
amappl16 192 138 0 107 2 0 2 2 0
8 0
amappl14 176 35 0 30 2 1 1 1 0
8 0
amappl12 160 5 0 4 2 1 1 1 0
8 0
amappl11 152 54 0 39 1 0 1 1 0
8 0
amappl10 144 17 0 14 1 0 1 1 0
8 0
amappl9 136 463 0 457 1 0 1 1 0
8 0
amappl8 128 130 0 118 1 0 1 1 0
8 0
amappl7 120 33 0 30 1 0 1 1 0
8 0
amappl6 112 81 0 70 1 0 1 1 0
8 0
amappl5 104 122 0 109 1 0 1 1 0
8 0
amappl4 96 495 0 468 1 0 1 1 0
8 0
amappl3 88 118 0 112 1 0 1 1 0
8 0
amappl2 80 958 0 891 3 0 3 3 0
8 1
amappl1 72 15309 0 14874 26 8 18 20 0
8 8
amappl 80 483 0 451 1 0 1 1 0
8 0
uaddrrnd 24 227 0 212 1 0 1 1 0
8 0
vmmpekpl 168 6421 0 6399 2 0 2 2 0
8 0
vmmpepl 168 32710 0 31723 94 14 80 80 0 357
37
vmsppl 368 226 0 212 2 0 2 2 0
8 0
pdppl 4096 461 0 424 6 0 6 6 0
8 1
pvpl 32 112565 0 108479 119 4 115 115 0 265
81
pmappl 232 226 0 212 1 0 1 1 0
8 0
8 0
ddb{0}>
HEAD commit: b1a12106 Don't check that the ipv6 source address of a nei..
git tree: openbsd
kernel config: https://syzkaller.appspot.com/x/.config?x=26ca0a9c07f16a3a
dashboard link: https://syzkaller.appspot.com/bug?extid=e5df02aad1d9e0ca30dd
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17c28687600000
dashboard link: https://syzkaller.appspot.com/bug?extid=e5df02aad1d9e0ca30dd
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+e5df02...@syzkaller.appspotmail.com
uvm_fault(0xfffffd807f00a8a0, 0x8, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at witness_checkorder+0x121: movl 0x8(%r15),%ebx
ddb{0}>
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
kernel page fault
uvm_fault(0xfffffd807f00a8a0, 0x8, 0, 1) -> e
witness_checkorder(ffff800000a5fe18,9,0) at witness_checkorder+0x121
kernel: page fault trap, code=0
Stopped at witness_checkorder+0x121: movl 0x8(%r15),%ebx
ddb{0}>
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
kernel page fault
uvm_fault(0xfffffd807f00a8a0, 0x8, 0, 1) -> e
sys/kern/subr_witness.c:776
end trace frame: 0xffff800020b67000, count: 0
ddb{0}> trace
witness_checkorder(ffff800000a5fe18,9,0) at witness_checkorder+0x121
sys/kern/subr_witness.c:776
mtx_enter(ffff800000a5fe08) at mtx_enter+0x3a sys/kern/kern_lock.c:265
filt_bpfread(fffffd806eb7e620,0) at filt_bpfread+0x4e sys/net/bpf.c:1210
kqueue_register(fffffd806e7f4b60,ffff800020b670f0,ffff800020ab1160) at
kqueue_register+0x425 sys/kern/kern_event.c:664
sys_kevent(ffff800020ab1160,ffff800020b672b8,ffff800020b67300) at
sys_kevent+0x2b1 sys/kern/kern_event.c:527
syscall(ffff800020b67380) at syscall+0x4a4 mi_syscall
sys/sys/syscall_mi.h:92 [inline]
syscall(ffff800020b67380) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
Xsyscall(6,0,ffffffffffffff80,0,6,6613bf580e0) at Xsyscall+0x128
end of kernel
end trace frame: 0x6637655c240, count: -7
ddb{0}> show registers
rdi 0
rsi 0x20000 acpi_pdirpa+0xbe68
rdi 0
rbp 0xffff800020b66fc0
rbx 0x70
rdx 0
rcx 0xfffffd8002fdab80
rax 0xffffffff8248eff0 cpu_info_full_primary+0x1ff0
r8 0x7f7fffffc000
r9 0x2b
r8 0x7f7fffffc000
r10 0xc8f53ad9a7d7366e
r11 0x881cccb5ed16e230
r12 0xdeaf4152deaf4152
r13 0
r14 0xffff800020ab1160
r15 0
rip 0xffffffff811658b1 witness_checkorder+0x121
cs 0x8
rflags 0x10246 __ALIGN_SIZE+0xf246
rsp 0xffff800020b66f20
rip 0xffffffff811658b1 witness_checkorder+0x121
cs 0x8
rflags 0x10246 __ALIGN_SIZE+0xf246
ss 0x10
witness_checkorder+0x121: movl 0x8(%r15),%ebx
ddb{0}> show proc
PROC (syz-executor.0) pid=403766 stat=onproc
witness_checkorder+0x121: movl 0x8(%r15),%ebx
ddb{0}> show proc
flags process=0 proc=4000000<THREAD>
pri=50, usrpri=50, nice=20
forw=0xffffffffffffffff, list=0xffff800020ab13d8,0xffff800020ab0ef8
process=0xffff800020adca80 user=0xffff800020b62000,
vmspace=0xfffffd807f00a8a0
estcpu=0, cpticks=0, pctcpu=0.0
user=0, sys=0, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
1314 243670 83188 0 7 0 syz-executor.0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
1314 453099 83188 0 3 0x4000080 kqread syz-executor.0
* 1314 403766 83188 0 7 0x4000000 syz-executor.0
1314 255455 83188 0 3 0x4000080 fsleep syz-executor.0
83188 523964 20443 0 3 0x82 nanosleep syz-executor.0
20443 195881 22637 0 3 0x82 thrsleep syz-execprog
20443 142353 22637 0 3 0x4000082 thrsleep syz-execprog
20443 266975 22637 0 3 0x4000082 thrsleep syz-execprog
20443 128235 22637 0 3 0x4000082 thrsleep syz-execprog
20443 315228 22637 0 3 0x4000082 thrsleep syz-execprog
20443 321496 22637 0 3 0x4000082 thrsleep syz-execprog
20443 395764 22637 0 3 0x4000082 thrsleep syz-execprog
20443 261453 22637 0 3 0x4000082 thrsleep syz-execprog
20443 444214 22637 0 3 0x4000082 kqread syz-execprog
22637 331214 29853 0 3 0x10008a pause ksh
29853 215402 63743 0 3 0x92 select sshd
41624 359930 1 0 3 0x100083 ttyin getty
63743 353468 1 0 3 0x80 select sshd
72874 459548 429 74 3 0x100092 bpf pflogd
429 447148 1 0 3 0x80 netio pflogd
8982 129626 11831 73 3 0x100090 kqread syslogd
11831 234052 1 0 3 0x100082 netio syslogd
73687 85203 1 77 3 0x100090 poll dhclient
23513 2481 1 0 3 0x80 poll dhclient
37129 472318 0 0 3 0x14200 pgzero zerothread
93612 198165 0 0 3 0x14200 aiodoned aiodoned
91924 329769 0 0 3 0x14200 syncer update
72336 375675 0 0 3 0x14200 cleaner cleaner
36043 278028 0 0 3 0x14200 reaper reaper
35395 126339 0 0 3 0x14200 pgdaemon pagedaemon
95711 31691 0 0 3 0x14200 bored crynlk
33224 175211 0 0 3 0x14200 bored crypto
75911 30836 0 0 3 0x40014200 acpi0 acpi0
27633 435410 0 0 3 0x40014200 idle1
48884 332799 0 0 3 0x14200 bored softnet
72101 391742 0 0 3 0x14200 bored systqmp
87152 375043 0 0 3 0x14200 bored systq
11277 412940 0 0 3 0x40014200 bored softclock
77481 77 0 0 3 0x40014200 idle0
37736 16445 0 0 3 0x14200 bored smr
1 489779 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
Process 1314 (syz-executor.0) thread 0xffff800020ab1160 (403766)
ddb{0}> show all locks
exclusive kernel_lock &kernel_lock r = 1 (0xffffffff82622388)
#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 Kern Lim
devbuf 9453 6383K 6449K 78643K 10548 0 0
#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 Kern Lim
pcb 13 8K 8K 78643K 15 0 0
rtable 63 2K 2K 78643K 169 0 0
ifaddr 26 8K 9K 78643K 34 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 1182 74K 74K 78643K 1188 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 1808 196K 290K 78643K 12765 0 0
file desc 3 8K 12K 78643K 18 0 0
ACPI 1808 196K 290K 78643K 12765 0 0
proc 59 63K 83K 78643K 384 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 199 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 76 12K 12K 78643K 960 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 41 3544K 3606K 78643K 3338 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
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 18 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 2 2 0 1 0
8 0
tcpcb 544 8 0 5 1 0 1 1 0
8 0
inpcb 280 34 0 27 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 2 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 2 1 0 1 1 0
8 0
pfstate 328 11 0 2 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
pfrule 1360 21 0 16 2 1 1 2 0
8 0
8 0
art_heap4 256 167 0 47 11 0 11 11 0
8 2
art_table 32 168 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 1422 0 20 46 0 46 46 0
8 0
8 0
ffsino 272 1422 0 20 94 0 94 94 0
8 0
nchpl 144 1661 0 49 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 4146 0 4146 2 1 1 1 0
8 1
percpumem 16 30 0 0 1 0 1 1 0
8 0
scxspl 192 4243 0 4243 9 8 1 7 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 432 226 0 212 2 0 2 2 0
8 0
futexpl 56 10 0 9 1 0 1 1 0
8 0
knotepl 112 40 0 28 1 0 1 1 0
8 0
kqueuepl 104 4 0 0 1 0 1 1 0
8 0
pipepl 112 154 0 141 2 1 1 1 0
8 0
fdescpl 488 227 0 212 3 0 3 3 0
8 0
filepl 152 1128 0 1064 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 0 212 2 1 1 1 0
8 1
processpl 896 242 0 212 4 0 4 4 0
8 0
procpl 632 253 0 212 4 0 4 4 0
8 0
srpgc 64 2 0 2 1 0 1 1 0
8 1
sockpl 384 81 0 61 2 0 2 2 0
8 0
mcl4k 4096 1 0 0 1 0 1 1 0
8 0
mcl2k 2048 81 0 0 10 0 10 10 0
8 0
mtagpl 80 1 0 0 1 0 1 1 0
8 0
mbufpl 256 184 0 0 10 0 10 10 0
8 0
bufpl 256 5886 0 1315 286 0 286 286 0
8 0
anonpl 16 22252 0 20614 15 2 13 13 0
124 6
amapchunkpl 152 806 0 734 5 0 5 5 0
158 2
amappl16 192 138 0 107 2 0 2 2 0
8 0
amappl14 176 35 0 30 2 1 1 1 0
8 0
amappl12 160 5 0 4 2 1 1 1 0
8 0
amappl11 152 54 0 39 1 0 1 1 0
8 0
amappl10 144 17 0 14 1 0 1 1 0
8 0
amappl9 136 463 0 457 1 0 1 1 0
8 0
amappl8 128 130 0 118 1 0 1 1 0
8 0
amappl7 120 33 0 30 1 0 1 1 0
8 0
amappl6 112 81 0 70 1 0 1 1 0
8 0
amappl5 104 122 0 109 1 0 1 1 0
8 0
amappl4 96 495 0 468 1 0 1 1 0
8 0
amappl3 88 118 0 112 1 0 1 1 0
8 0
amappl2 80 958 0 891 3 0 3 3 0
8 1
amappl1 72 15309 0 14874 26 8 18 20 0
8 8
amappl 80 483 0 451 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 17 0 17 1 1 0 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 17 0 17 1 1 0 1 0
8 0
8 0
uaddrrnd 24 227 0 212 1 0 1 1 0
8 0
uaddrbest 32 2 0 0 1 0 1 1 0
8 0
uaddr 24 227 0 212 1 0 1 1 0
uaddrbest 32 2 0 0 1 0 1 1 0
8 0
8 0
vmmpekpl 168 6421 0 6399 2 0 2 2 0
8 0
vmmpepl 168 32710 0 31723 94 14 80 80 0 357
37
vmsppl 368 226 0 212 2 0 2 2 0
8 0
pdppl 4096 461 0 424 6 0 6 6 0
8 1
pvpl 32 112565 0 108479 119 4 115 115 0 265
81
pmappl 232 226 0 212 1 0 1 1 0
8 0
extentpl 40 41 0 26 1 0 1 1 0
8 0
phpool 112 431 0 4 13 0 13 13 0
8 0
8 0
ddb{0}>
Anton Lindqvist
Oct 22, 2019, 6:40:35 AM10/22/19
to syzbot, syzkaller-o...@googlegroups.com
#syz fix: put bpfdesc reference counting back, revert change introduced in 1.175 as: BPF: remove redundant reference counting of filedescriptors
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