assert "ifp != NULL" failed in rtsock.c (2)
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syzbot
Jun 7, 2020, 7:13:14 AM6/7/20
to syzkaller-o...@googlegroups.com
Hello,
syzbot found the following crash on:
HEAD commit: dfe2a243 Bootstrap a kernel pmap and enable translations.
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=119bf446100000
kernel config: https://syzkaller.appspot.com/x/.config?x=fe55924c11e64b0a
dashboard link: https://syzkaller.appspot.com/bug?extid=6e3f18d0e73c3612e74c
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+6e3f18...@syzkaller.appspotmail.com
panic: kernel diagnostic assertion "ifp != NULL" failed: file "/syzkaller/managers/main/kernel/sys/net/rtsock.c", line 939
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
* 76191 47766 0 0 0x4000000 0 syz-executor.1
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff821dd1e7) at panic+0x15c sys/kern/subr_prf.c:207
__assert(ffffffff82234954,ffffffff821f058d,3ab,ffffffff821bd5b1) at __assert+0x2b sys/kern/subr_prf.c:154
rtm_output(ffff800000a3e400,ffff80001d804640,ffff80001d804598,40,0) at rtm_output+0xba9 sys/net/rtsock.c:1120
route_output(fffffd805bce2800,fffffd805e55a960,0,0) at route_output+0x678 sys/net/rtsock.c:832
route_usrreq(fffffd805e55a960,9,fffffd805bce2800,0,0,ffff80001d7739e0) at route_usrreq+0x36f sys/net/rtsock.c:275
sosend(fffffd805e55a960,0,ffff80001d804830,0,0,0) at sosend+0x669 sys/kern/uipc_socket.c:549
sendit(ffff80001d7739e0,3,ffff80001d804910,0,ffff80001d8049f0) at sendit+0x52b sys/kern/uipc_syscalls.c:652
sys_sendto(ffff80001d7739e0,ffff80001d8049a8,ffff80001d8049f0) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:517
syscall(ffff80001d804a70) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x117fbb636c0, count: 4
https://www.openbsd.org/ddb.html describes the minimum info required in bug
reports. Insufficient info makes it difficult to find and fix bugs.
ddb>
ddb> set $lines = 0
ddb> set $maxwidth = 0
ddb> show panic
kernel diagnostic assertion "ifp != NULL" failed: file "/syzkaller/managers/main/kernel/sys/net/rtsock.c", line 939
ddb> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff821dd1e7) at panic+0x15c sys/kern/subr_prf.c:207
__assert(ffffffff82234954,ffffffff821f058d,3ab,ffffffff821bd5b1) at __assert+0x2b sys/kern/subr_prf.c:154
rtm_output(ffff800000a3e400,ffff80001d804640,ffff80001d804598,40,0) at rtm_output+0xba9 sys/net/rtsock.c:1120
route_output(fffffd805bce2800,fffffd805e55a960,0,0) at route_output+0x678 sys/net/rtsock.c:832
route_usrreq(fffffd805e55a960,9,fffffd805bce2800,0,0,ffff80001d7739e0) at route_usrreq+0x36f sys/net/rtsock.c:275
sosend(fffffd805e55a960,0,ffff80001d804830,0,0,0) at sosend+0x669 sys/kern/uipc_socket.c:549
sendit(ffff80001d7739e0,3,ffff80001d804910,0,ffff80001d8049f0) at sendit+0x52b sys/kern/uipc_syscalls.c:652
sys_sendto(ffff80001d7739e0,ffff80001d8049a8,ffff80001d8049f0) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:517
syscall(ffff80001d804a70) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x117fbb636c0, count: -11
ddb> show registers
rdi 0
rsi 0x1
rbp 0xffff80001d804410
rbx 0xffff80001d8044c0
rdx 0x2
rcx 0
rax 0x1
r8 0xffffffff813a55ef kprintf+0x15f
r9 0x1
r10 0x2
r11 0x3a992074015e5e3e
r12 0x3000000008
r13 0xffff80001d804420
r14 0x100
r15 0x1
rip 0xffffffff812bfa38 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff80001d804400
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb> show proc
PROC (syz-executor.1) pid=76191 stat=onproc
flags process=0 proc=4000000<THREAD>
pri=32, usrpri=81, nice=20
forw=0xffffffffffffffff, list=0xffff80001d774130,0xffffffff825b67d0
process=0xffff800020c1a3c8 user=0xffff80001d7ff000, vmspace=0xfffffd8068931228
estcpu=36, cpticks=1, pctcpu=0.0
user=0, sys=1, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
47766 502904 29584 0 2 0 syz-executor.1
*47766 76191 29584 0 7 0x4000000 syz-executor.1
72350 209033 16548 0 2 0x2 syz-executor.0
29584 490247 16548 0 2 0x482 syz-executor.1
56057 375829 0 0 3 0x14200 bored sosplice
61254 263773 0 0 3 0x14280 nfsidl nfsio
81443 442306 0 0 3 0x14280 nfsidl nfsio
10112 432970 0 0 3 0x14280 nfsidl nfsio
33047 266738 0 0 3 0x14280 nfsidl nfsio
32007 265377 0 0 3 0x14280 nfsidl nfsio
20335 428746 0 0 3 0x14280 nfsidl nfsio
8326 517774 0 0 3 0x14280 nfsidl nfsio
30751 222275 0 0 3 0x14280 nfsidl nfsio
36545 122651 0 0 3 0x14280 nfsidl nfsio
69886 56544 0 0 3 0x14280 nfsidl nfsio
70078 317936 0 0 3 0x14280 nfsidl nfsio
94031 363902 0 0 3 0x14280 nfsidl nfsio
31382 4393 0 0 3 0x14280 nfsidl nfsio
1257 213330 0 0 3 0x14280 nfsidl nfsio
86462 178179 0 0 3 0x14280 nfsidl nfsio
22838 289276 0 0 3 0x14280 nfsidl nfsio
68617 51302 0 0 3 0x14280 nfsidl nfsio
82269 17118 0 0 3 0x14280 nfsidl nfsio
70060 206132 0 0 3 0x14280 nfsidl nfsio
38579 336690 0 0 3 0x14280 nfsidl nfsio
16548 515899 80779 0 3 0x82 kqread syz-fuzzer
16548 72682 80779 0 3 0x4000082 nanosleep syz-fuzzer
16548 207137 80779 0 3 0x4000082 thrsleep syz-fuzzer
16548 95541 80779 0 3 0x4000082 thrsleep syz-fuzzer
16548 258270 80779 0 3 0x4000082 thrsleep syz-fuzzer
16548 133862 80779 0 3 0x4000082 thrsleep syz-fuzzer
16548 107703 80779 0 3 0x4000082 thrsleep syz-fuzzer
16548 31817 80779 0 3 0x4000082 thrsleep syz-fuzzer
80779 239664 62990 0 3 0x10008a pause ksh
62990 124343 65296 0 3 0x92 select sshd
628 86654 1 0 3 0x100083 ttyin getty
65296 467493 1 0 3 0x80 select sshd
89074 517699 60925 73 3 0x100090 kqread syslogd
60925 204403 1 0 3 0x100082 netio syslogd
21826 491686 1 77 3 0x100090 poll dhclient
8895 32762 1 0 3 0x80 poll dhclient
80771 61065 0 0 3 0x14200 bored smr
93824 251401 0 0 2 0x14200 zerothread
63596 478815 0 0 3 0x14200 aiodoned aiodoned
46492 366076 0 0 3 0x14200 syncer update
31062 84245 0 0 3 0x14200 cleaner cleaner
57031 133268 0 0 3 0x14200 reaper reaper
11442 69310 0 0 3 0x14200 pgdaemon pagedaemon
47407 491904 0 0 3 0x14200 bored crynlk
35638 31093 0 0 3 0x14200 bored crypto
38573 65051 0 0 3 0x40014200 acpi0 acpi0
3954 417503 0 0 3 0x14200 bored softnet
84067 31233 0 0 3 0x14200 bored systqmp
48689 496465 0 0 3 0x14200 bored systq
22091 390182 0 0 3 0x40014200 bored softclock
92171 291430 0 0 3 0x40014200 idle0
1 349522 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb> show all locks
No such command
ddb> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 9513 6355K 7165K 78643K 11123 0
pcb 13 8K 8K 78643K 125 0
rtable 122 6K 9K 78643K 633 0
ifaddr 77 14K 15K 78643K 199 0
sysctl 2 0K 0K 78643K 4 0
counters 21 16K 16K 78643K 32 0
ioctlops 0 0K 4K 78643K 110 0
iov 0 0K 16K 78643K 112 0
mount 1 1K 1K 78643K 1 0
vnodes 1217 77K 77K 78643K 1479 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 5K 78643K 9 0
VM map 2 0K 0K 78643K 2 0
sem 12 0K 0K 78643K 230 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1809 195K 288K 78643K 12938 0
file desc 5 13K 25K 78643K 989 0
sigio 0 0K 0K 78643K 8 0
proc 50 38K 55K 78643K 491 0
subproc 32 2K 2K 78643K 68 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 74 0
in_multi 60 3K 3K 78643K 159 0
ether_multi 1 0K 0K 78643K 25 0
mrt 0 0K 0K 78643K 7 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 61 281K 281K 78643K 61 0
exec 0 0K 1K 78643K 273 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 133 40K 58K 78643K 3148 0
UVM aobj 49 2K 2K 78643K 55 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 134 0
NDP 15 0K 0K 78643K 35 0
temp 133 3045K 3110K 78643K 20285 0
kqueue 3 4K 12K 78643K 60 0
SYN cache 2 16K 16K 78643K 2 0
ddb> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
arp 64 11 0 4 1 0 1 1 0 8 0
rtpcb 80 46 0 43 1 0 1 1 0 8 0
rtentry 112 88 0 42 2 0 2 2 0 8 0
unpcb 120 276 0 268 1 0 1 1 0 8 0
syncache 264 14 0 14 3 3 0 1 0 8 0
tcpqe 32 48 0 48 3 3 0 1 0 8 0
tcpcb 544 306 0 302 2 1 1 2 0 8 0
ipq 40 2 0 2 1 0 1 1 0 8 1
ipqe 40 4 0 4 1 0 1 1 0 8 1
inpcb 280 684 0 677 3 2 1 2 0 8 0
rttmr 72 1 0 1 1 0 1 1 0 8 1
ip6q 72 1 0 1 1 1 0 1 0 8 0
ip6af 40 2 0 2 1 1 0 1 0 8 0
nd6 48 18 0 13 1 0 1 1 0 8 0
ppxss 1128 3 0 3 3 3 0 1 0 8 0
pfstscr 40 4 0 2 1 0 1 1 0 8 0
pfosfp 40 1 0 0 1 0 1 1 0 8 0
pfosfpen 112 2 0 0 1 0 1 1 0 8 0
pfrke_plain 160 10 0 10 1 0 1 1 0 8 1
pfrktable 1344 103 0 101 1 0 1 1 0 8 0
pftag 88 18 0 18 3 2 1 1 0 8 1
pfstitem 24 2 0 1 1 0 1 1 0 8 0
pfstkey 112 3 0 2 1 0 1 1 0 8 0
pfstate 328 2 0 1 1 0 1 1 0 8 0
pfrule 1360 24 0 18 1 0 1 1 0 8 0
art_heap8 4096 2 0 0 2 0 2 2 0 8 0
art_heap4 256 389 0 179 15 1 14 14 0 8 0
art_table 32 391 0 179 2 0 2 2 0 8 0
art_node 16 87 0 44 1 0 1 1 0 8 0
sysvmsgpl 40 14 0 7 2 1 1 1 0 8 0
semupl 112 4 0 4 1 1 0 1 0 8 0
semapl 112 226 0 216 1 0 1 1 0 8 0
shmpl 112 53 0 6 2 0 2 2 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 2690 0 1297 88 0 88 88 0 8 0
ffsino 240 2690 0 1297 83 0 83 83 0 8 0
nchpl 144 4246 0 2658 60 0 60 60 0 8 0
rtmask 32 12 0 12 1 0 1 1 0 8 1
uvmvnodes 72 2877 0 0 53 0 53 53 0 8 0
vnodes 208 2877 0 0 152 0 152 152 0 8 0
namei 1024 14189 0 14188 1 0 1 1 0 8 0
vcpupl 1984 3 0 1 1 0 1 1 0 8 0
vmpool 528 3 0 1 1 0 1 1 0 8 0
pfiaddrpl 120 30 0 28 1 0 1 1 0 8 0
scxspl 192 12107 0 12107 1 0 1 1 0 8 1
plimitpl 152 52 0 45 1 0 1 1 0 8 0
sigapl 424 1190 0 1141 6 0 6 6 0 8 0
futexpl 56 18373 0 18373 1 0 1 1 0 8 1
knotepl 112 163 0 144 1 0 1 1 0 8 0
kqueuepl 144 690 0 687 1 0 1 1 0 8 0
pipelkpl 16 169 0 159 1 0 1 1 0 8 0
pipepl 120 338 0 319 1 0 1 1 0 8 0
fdescpl 432 1155 0 1141 2 0 2 2 0 8 0
filepl 120 8163 0 8067 4 0 4 4 0 8 1
lockfpl 104 139 0 138 1 0 1 1 0 8 0
lockfspl 48 51 0 50 1 0 1 1 0 8 0
sessionpl 112 19 0 9 1 0 1 1 0 8 0
pgrppl 48 27 0 17 1 0 1 1 0 8 0
ucredpl 96 2207 0 2200 1 0 1 1 0 8 0
zombiepl 144 1141 0 1141 1 0 1 1 0 8 1
processpl 920 1190 0 1141 7 0 7 7 0 8 0
procpl 624 2336 0 2279 6 1 5 6 0 8 0
sosppl 128 8 0 8 3 2 1 1 0 8 1
sockpl 400 1010 0 992 5 2 3 4 0 8 1
mcl64k 65536 72 0 72 3 2 1 1 0 8 1
mcl16k 16384 10 0 10 3 3 0 1 0 8 0
mcl12k 12288 18 0 18 3 2 1 1 0 8 1
mcl9k 9216 14 0 14 2 2 0 1 0 8 0
mcl8k 8192 70 0 70 1 0 1 1 0 8 1
mcl4k 4096 243 0 243 2 1 1 1 0 8 1
mcl2k2 2112 4 0 4 2 2 0 1 0 8 0
mcl2k 2048 76665 0 76626 14 8 6 12 0 8 0
mtagpl 80 18 0 18 2 1 1 1 0 8 1
mbufpl 256 128076 0 127975 17 7 10 14 0 8 2
bufpl 280 5361 0 126 374 0 374 374 0 8 0
anonpl 16 207444 0 195096 83 13 70 77 0 107 2
amapchunkpl 152 4952 0 4791 16 8 8 13 0 158 1
amappl16 192 11253 0 10348 60 11 49 60 0 8 2
amappl15 184 2 0 1 1 0 1 1 0 8 0
amappl14 176 287 0 281 1 0 1 1 0 8 0
amappl13 168 709 0 703 1 0 1 1 0 8 0
amappl12 160 6 0 6 2 2 0 1 0 8 0
amappl11 152 52 0 43 1 0 1 1 0 8 0
amappl10 144 38 0 33 1 0 1 1 0 8 0
amappl9 136 378 0 376 1 0 1 1 0 8 0
amappl8 128 397 0 353 2 0 2 2 0 8 0
amappl7 120 123 0 110 1 0 1 1 0 8 0
amappl6 112 26 0 19 1 0 1 1 0 8 0
amappl5 104 1018 0 1007 1 0 1 1 0 8 0
amappl4 96 1045 0 1016 1 0 1 1 0 8 0
amappl3 88 378 0 373 1 0 1 1 0 8 0
amappl2 80 7741 0 7677 2 0 2 2 0 8 0
amappl1 72 28484 0 28070 23 13 10 17 0 8 0
amappl 80 2589 0 2548 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 54 0 6 1 0 1 1 0 8 0
uaddrrnd 24 1158 0 1142 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 1158 0 1142 1 0 1 1 0 8 0
vmmpekpl 168 10233 0 10202 2 0 2 2 0 8 0
vmmpepl 168 144674 0 142682 167 44 123 123 0 357 32
vmsppl 272 1157 0 1142 2 0 2 2 0 8 0
pdppl 4096 2322 0 2286 6 1 5 6 0 8 0
pvpl 32 513768 0 498832 192 23 169 183 0 265 11
pmappl 200 1157 0 1142 1 0 1 1 0 8 0
extentpl 40 53 0 36 1 0 1 1 0 8 0
phpool 112 256 0 29 7 0 7 7 0 8 0
ddb> machine ddbcpu 0
No such command
ddb> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff821dd1e7) at panic+0x15c sys/kern/subr_prf.c:207
__assert(ffffffff82234954,ffffffff821f058d,3ab,ffffffff821bd5b1) at __assert+0x2b sys/kern/subr_prf.c:154
rtm_output(ffff800000a3e400,ffff80001d804640,ffff80001d804598,40,0) at rtm_output+0xba9 sys/net/rtsock.c:1120
route_output(fffffd805bce2800,fffffd805e55a960,0,0) at route_output+0x678 sys/net/rtsock.c:832
route_usrreq(fffffd805e55a960,9,fffffd805bce2800,0,0,ffff80001d7739e0) at route_usrreq+0x36f sys/net/rtsock.c:275
sosend(fffffd805e55a960,0,ffff80001d804830,0,0,0) at sosend+0x669 sys/kern/uipc_socket.c:549
sendit(ffff80001d7739e0,3,ffff80001d804910,0,ffff80001d8049f0) at sendit+0x52b sys/kern/uipc_syscalls.c:652
sys_sendto(ffff80001d7739e0,ffff80001d8049a8,ffff80001d8049f0) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:517
syscall(ffff80001d804a70) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x117fbb636c0, count: -11
ddb> machine ddbcpu 1
No such command
ddb> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff821dd1e7) at panic+0x15c sys/kern/subr_prf.c:207
__assert(ffffffff82234954,ffffffff821f058d,3ab,ffffffff821bd5b1) at __assert+0x2b sys/kern/subr_prf.c:154
rtm_output(ffff800000a3e400,ffff80001d804640,ffff80001d804598,40,0) at rtm_output+0xba9 sys/net/rtsock.c:1120
route_output(fffffd805bce2800,fffffd805e55a960,0,0) at route_output+0x678 sys/net/rtsock.c:832
route_usrreq(fffffd805e55a960,9,fffffd805bce2800,0,0,ffff80001d7739e0) at route_usrreq+0x36f sys/net/rtsock.c:275
sosend(fffffd805e55a960,0,ffff80001d804830,0,0,0) at sosend+0x669 sys/kern/uipc_socket.c:549
sendit(ffff80001d7739e0,3,ffff80001d804910,0,ffff80001d8049f0) at sendit+0x52b sys/kern/uipc_syscalls.c:652
sys_sendto(ffff80001d7739e0,ffff80001d8049a8,ffff80001d8049f0) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:517
syscall(ffff80001d804a70) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x117fbb636c0, count: -11
---
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: dfe2a243 Bootstrap a kernel pmap and enable translations.
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=119bf446100000
kernel config: https://syzkaller.appspot.com/x/.config?x=fe55924c11e64b0a
dashboard link: https://syzkaller.appspot.com/bug?extid=6e3f18d0e73c3612e74c
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+6e3f18...@syzkaller.appspotmail.com
panic: kernel diagnostic assertion "ifp != NULL" failed: file "/syzkaller/managers/main/kernel/sys/net/rtsock.c", line 939
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
* 76191 47766 0 0 0x4000000 0 syz-executor.1
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff821dd1e7) at panic+0x15c sys/kern/subr_prf.c:207
__assert(ffffffff82234954,ffffffff821f058d,3ab,ffffffff821bd5b1) at __assert+0x2b sys/kern/subr_prf.c:154
rtm_output(ffff800000a3e400,ffff80001d804640,ffff80001d804598,40,0) at rtm_output+0xba9 sys/net/rtsock.c:1120
route_output(fffffd805bce2800,fffffd805e55a960,0,0) at route_output+0x678 sys/net/rtsock.c:832
route_usrreq(fffffd805e55a960,9,fffffd805bce2800,0,0,ffff80001d7739e0) at route_usrreq+0x36f sys/net/rtsock.c:275
sosend(fffffd805e55a960,0,ffff80001d804830,0,0,0) at sosend+0x669 sys/kern/uipc_socket.c:549
sendit(ffff80001d7739e0,3,ffff80001d804910,0,ffff80001d8049f0) at sendit+0x52b sys/kern/uipc_syscalls.c:652
sys_sendto(ffff80001d7739e0,ffff80001d8049a8,ffff80001d8049f0) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:517
syscall(ffff80001d804a70) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x117fbb636c0, count: 4
https://www.openbsd.org/ddb.html describes the minimum info required in bug
reports. Insufficient info makes it difficult to find and fix bugs.
ddb>
ddb> set $lines = 0
ddb> set $maxwidth = 0
ddb> show panic
kernel diagnostic assertion "ifp != NULL" failed: file "/syzkaller/managers/main/kernel/sys/net/rtsock.c", line 939
ddb> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff821dd1e7) at panic+0x15c sys/kern/subr_prf.c:207
__assert(ffffffff82234954,ffffffff821f058d,3ab,ffffffff821bd5b1) at __assert+0x2b sys/kern/subr_prf.c:154
rtm_output(ffff800000a3e400,ffff80001d804640,ffff80001d804598,40,0) at rtm_output+0xba9 sys/net/rtsock.c:1120
route_output(fffffd805bce2800,fffffd805e55a960,0,0) at route_output+0x678 sys/net/rtsock.c:832
route_usrreq(fffffd805e55a960,9,fffffd805bce2800,0,0,ffff80001d7739e0) at route_usrreq+0x36f sys/net/rtsock.c:275
sosend(fffffd805e55a960,0,ffff80001d804830,0,0,0) at sosend+0x669 sys/kern/uipc_socket.c:549
sendit(ffff80001d7739e0,3,ffff80001d804910,0,ffff80001d8049f0) at sendit+0x52b sys/kern/uipc_syscalls.c:652
sys_sendto(ffff80001d7739e0,ffff80001d8049a8,ffff80001d8049f0) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:517
syscall(ffff80001d804a70) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x117fbb636c0, count: -11
ddb> show registers
rdi 0
rsi 0x1
rbp 0xffff80001d804410
rbx 0xffff80001d8044c0
rdx 0x2
rcx 0
rax 0x1
r8 0xffffffff813a55ef kprintf+0x15f
r9 0x1
r10 0x2
r11 0x3a992074015e5e3e
r12 0x3000000008
r13 0xffff80001d804420
r14 0x100
r15 0x1
rip 0xffffffff812bfa38 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff80001d804400
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb> show proc
PROC (syz-executor.1) pid=76191 stat=onproc
flags process=0 proc=4000000<THREAD>
pri=32, usrpri=81, nice=20
forw=0xffffffffffffffff, list=0xffff80001d774130,0xffffffff825b67d0
process=0xffff800020c1a3c8 user=0xffff80001d7ff000, vmspace=0xfffffd8068931228
estcpu=36, cpticks=1, pctcpu=0.0
user=0, sys=1, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
47766 502904 29584 0 2 0 syz-executor.1
*47766 76191 29584 0 7 0x4000000 syz-executor.1
72350 209033 16548 0 2 0x2 syz-executor.0
29584 490247 16548 0 2 0x482 syz-executor.1
56057 375829 0 0 3 0x14200 bored sosplice
61254 263773 0 0 3 0x14280 nfsidl nfsio
81443 442306 0 0 3 0x14280 nfsidl nfsio
10112 432970 0 0 3 0x14280 nfsidl nfsio
33047 266738 0 0 3 0x14280 nfsidl nfsio
32007 265377 0 0 3 0x14280 nfsidl nfsio
20335 428746 0 0 3 0x14280 nfsidl nfsio
8326 517774 0 0 3 0x14280 nfsidl nfsio
30751 222275 0 0 3 0x14280 nfsidl nfsio
36545 122651 0 0 3 0x14280 nfsidl nfsio
69886 56544 0 0 3 0x14280 nfsidl nfsio
70078 317936 0 0 3 0x14280 nfsidl nfsio
94031 363902 0 0 3 0x14280 nfsidl nfsio
31382 4393 0 0 3 0x14280 nfsidl nfsio
1257 213330 0 0 3 0x14280 nfsidl nfsio
86462 178179 0 0 3 0x14280 nfsidl nfsio
22838 289276 0 0 3 0x14280 nfsidl nfsio
68617 51302 0 0 3 0x14280 nfsidl nfsio
82269 17118 0 0 3 0x14280 nfsidl nfsio
70060 206132 0 0 3 0x14280 nfsidl nfsio
38579 336690 0 0 3 0x14280 nfsidl nfsio
16548 515899 80779 0 3 0x82 kqread syz-fuzzer
16548 72682 80779 0 3 0x4000082 nanosleep syz-fuzzer
16548 207137 80779 0 3 0x4000082 thrsleep syz-fuzzer
16548 95541 80779 0 3 0x4000082 thrsleep syz-fuzzer
16548 258270 80779 0 3 0x4000082 thrsleep syz-fuzzer
16548 133862 80779 0 3 0x4000082 thrsleep syz-fuzzer
16548 107703 80779 0 3 0x4000082 thrsleep syz-fuzzer
16548 31817 80779 0 3 0x4000082 thrsleep syz-fuzzer
80779 239664 62990 0 3 0x10008a pause ksh
62990 124343 65296 0 3 0x92 select sshd
628 86654 1 0 3 0x100083 ttyin getty
65296 467493 1 0 3 0x80 select sshd
89074 517699 60925 73 3 0x100090 kqread syslogd
60925 204403 1 0 3 0x100082 netio syslogd
21826 491686 1 77 3 0x100090 poll dhclient
8895 32762 1 0 3 0x80 poll dhclient
80771 61065 0 0 3 0x14200 bored smr
93824 251401 0 0 2 0x14200 zerothread
63596 478815 0 0 3 0x14200 aiodoned aiodoned
46492 366076 0 0 3 0x14200 syncer update
31062 84245 0 0 3 0x14200 cleaner cleaner
57031 133268 0 0 3 0x14200 reaper reaper
11442 69310 0 0 3 0x14200 pgdaemon pagedaemon
47407 491904 0 0 3 0x14200 bored crynlk
35638 31093 0 0 3 0x14200 bored crypto
38573 65051 0 0 3 0x40014200 acpi0 acpi0
3954 417503 0 0 3 0x14200 bored softnet
84067 31233 0 0 3 0x14200 bored systqmp
48689 496465 0 0 3 0x14200 bored systq
22091 390182 0 0 3 0x40014200 bored softclock
92171 291430 0 0 3 0x40014200 idle0
1 349522 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb> show all locks
No such command
ddb> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 9513 6355K 7165K 78643K 11123 0
pcb 13 8K 8K 78643K 125 0
rtable 122 6K 9K 78643K 633 0
ifaddr 77 14K 15K 78643K 199 0
sysctl 2 0K 0K 78643K 4 0
counters 21 16K 16K 78643K 32 0
ioctlops 0 0K 4K 78643K 110 0
iov 0 0K 16K 78643K 112 0
mount 1 1K 1K 78643K 1 0
vnodes 1217 77K 77K 78643K 1479 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 5K 78643K 9 0
VM map 2 0K 0K 78643K 2 0
sem 12 0K 0K 78643K 230 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1809 195K 288K 78643K 12938 0
file desc 5 13K 25K 78643K 989 0
sigio 0 0K 0K 78643K 8 0
proc 50 38K 55K 78643K 491 0
subproc 32 2K 2K 78643K 68 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 74 0
in_multi 60 3K 3K 78643K 159 0
ether_multi 1 0K 0K 78643K 25 0
mrt 0 0K 0K 78643K 7 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 61 281K 281K 78643K 61 0
exec 0 0K 1K 78643K 273 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 133 40K 58K 78643K 3148 0
UVM aobj 49 2K 2K 78643K 55 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 134 0
NDP 15 0K 0K 78643K 35 0
temp 133 3045K 3110K 78643K 20285 0
kqueue 3 4K 12K 78643K 60 0
SYN cache 2 16K 16K 78643K 2 0
ddb> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
arp 64 11 0 4 1 0 1 1 0 8 0
rtpcb 80 46 0 43 1 0 1 1 0 8 0
rtentry 112 88 0 42 2 0 2 2 0 8 0
unpcb 120 276 0 268 1 0 1 1 0 8 0
syncache 264 14 0 14 3 3 0 1 0 8 0
tcpqe 32 48 0 48 3 3 0 1 0 8 0
tcpcb 544 306 0 302 2 1 1 2 0 8 0
ipq 40 2 0 2 1 0 1 1 0 8 1
ipqe 40 4 0 4 1 0 1 1 0 8 1
inpcb 280 684 0 677 3 2 1 2 0 8 0
rttmr 72 1 0 1 1 0 1 1 0 8 1
ip6q 72 1 0 1 1 1 0 1 0 8 0
ip6af 40 2 0 2 1 1 0 1 0 8 0
nd6 48 18 0 13 1 0 1 1 0 8 0
ppxss 1128 3 0 3 3 3 0 1 0 8 0
pfstscr 40 4 0 2 1 0 1 1 0 8 0
pfosfp 40 1 0 0 1 0 1 1 0 8 0
pfosfpen 112 2 0 0 1 0 1 1 0 8 0
pfrke_plain 160 10 0 10 1 0 1 1 0 8 1
pfrktable 1344 103 0 101 1 0 1 1 0 8 0
pftag 88 18 0 18 3 2 1 1 0 8 1
pfstitem 24 2 0 1 1 0 1 1 0 8 0
pfstkey 112 3 0 2 1 0 1 1 0 8 0
pfstate 328 2 0 1 1 0 1 1 0 8 0
pfrule 1360 24 0 18 1 0 1 1 0 8 0
art_heap8 4096 2 0 0 2 0 2 2 0 8 0
art_heap4 256 389 0 179 15 1 14 14 0 8 0
art_table 32 391 0 179 2 0 2 2 0 8 0
art_node 16 87 0 44 1 0 1 1 0 8 0
sysvmsgpl 40 14 0 7 2 1 1 1 0 8 0
semupl 112 4 0 4 1 1 0 1 0 8 0
semapl 112 226 0 216 1 0 1 1 0 8 0
shmpl 112 53 0 6 2 0 2 2 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 2690 0 1297 88 0 88 88 0 8 0
ffsino 240 2690 0 1297 83 0 83 83 0 8 0
nchpl 144 4246 0 2658 60 0 60 60 0 8 0
rtmask 32 12 0 12 1 0 1 1 0 8 1
uvmvnodes 72 2877 0 0 53 0 53 53 0 8 0
vnodes 208 2877 0 0 152 0 152 152 0 8 0
namei 1024 14189 0 14188 1 0 1 1 0 8 0
vcpupl 1984 3 0 1 1 0 1 1 0 8 0
vmpool 528 3 0 1 1 0 1 1 0 8 0
pfiaddrpl 120 30 0 28 1 0 1 1 0 8 0
scxspl 192 12107 0 12107 1 0 1 1 0 8 1
plimitpl 152 52 0 45 1 0 1 1 0 8 0
sigapl 424 1190 0 1141 6 0 6 6 0 8 0
futexpl 56 18373 0 18373 1 0 1 1 0 8 1
knotepl 112 163 0 144 1 0 1 1 0 8 0
kqueuepl 144 690 0 687 1 0 1 1 0 8 0
pipelkpl 16 169 0 159 1 0 1 1 0 8 0
pipepl 120 338 0 319 1 0 1 1 0 8 0
fdescpl 432 1155 0 1141 2 0 2 2 0 8 0
filepl 120 8163 0 8067 4 0 4 4 0 8 1
lockfpl 104 139 0 138 1 0 1 1 0 8 0
lockfspl 48 51 0 50 1 0 1 1 0 8 0
sessionpl 112 19 0 9 1 0 1 1 0 8 0
pgrppl 48 27 0 17 1 0 1 1 0 8 0
ucredpl 96 2207 0 2200 1 0 1 1 0 8 0
zombiepl 144 1141 0 1141 1 0 1 1 0 8 1
processpl 920 1190 0 1141 7 0 7 7 0 8 0
procpl 624 2336 0 2279 6 1 5 6 0 8 0
sosppl 128 8 0 8 3 2 1 1 0 8 1
sockpl 400 1010 0 992 5 2 3 4 0 8 1
mcl64k 65536 72 0 72 3 2 1 1 0 8 1
mcl16k 16384 10 0 10 3 3 0 1 0 8 0
mcl12k 12288 18 0 18 3 2 1 1 0 8 1
mcl9k 9216 14 0 14 2 2 0 1 0 8 0
mcl8k 8192 70 0 70 1 0 1 1 0 8 1
mcl4k 4096 243 0 243 2 1 1 1 0 8 1
mcl2k2 2112 4 0 4 2 2 0 1 0 8 0
mcl2k 2048 76665 0 76626 14 8 6 12 0 8 0
mtagpl 80 18 0 18 2 1 1 1 0 8 1
mbufpl 256 128076 0 127975 17 7 10 14 0 8 2
bufpl 280 5361 0 126 374 0 374 374 0 8 0
anonpl 16 207444 0 195096 83 13 70 77 0 107 2
amapchunkpl 152 4952 0 4791 16 8 8 13 0 158 1
amappl16 192 11253 0 10348 60 11 49 60 0 8 2
amappl15 184 2 0 1 1 0 1 1 0 8 0
amappl14 176 287 0 281 1 0 1 1 0 8 0
amappl13 168 709 0 703 1 0 1 1 0 8 0
amappl12 160 6 0 6 2 2 0 1 0 8 0
amappl11 152 52 0 43 1 0 1 1 0 8 0
amappl10 144 38 0 33 1 0 1 1 0 8 0
amappl9 136 378 0 376 1 0 1 1 0 8 0
amappl8 128 397 0 353 2 0 2 2 0 8 0
amappl7 120 123 0 110 1 0 1 1 0 8 0
amappl6 112 26 0 19 1 0 1 1 0 8 0
amappl5 104 1018 0 1007 1 0 1 1 0 8 0
amappl4 96 1045 0 1016 1 0 1 1 0 8 0
amappl3 88 378 0 373 1 0 1 1 0 8 0
amappl2 80 7741 0 7677 2 0 2 2 0 8 0
amappl1 72 28484 0 28070 23 13 10 17 0 8 0
amappl 80 2589 0 2548 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 54 0 6 1 0 1 1 0 8 0
uaddrrnd 24 1158 0 1142 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 1158 0 1142 1 0 1 1 0 8 0
vmmpekpl 168 10233 0 10202 2 0 2 2 0 8 0
vmmpepl 168 144674 0 142682 167 44 123 123 0 357 32
vmsppl 272 1157 0 1142 2 0 2 2 0 8 0
pdppl 4096 2322 0 2286 6 1 5 6 0 8 0
pvpl 32 513768 0 498832 192 23 169 183 0 265 11
pmappl 200 1157 0 1142 1 0 1 1 0 8 0
extentpl 40 53 0 36 1 0 1 1 0 8 0
phpool 112 256 0 29 7 0 7 7 0 8 0
ddb> machine ddbcpu 0
No such command
ddb> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff821dd1e7) at panic+0x15c sys/kern/subr_prf.c:207
__assert(ffffffff82234954,ffffffff821f058d,3ab,ffffffff821bd5b1) at __assert+0x2b sys/kern/subr_prf.c:154
rtm_output(ffff800000a3e400,ffff80001d804640,ffff80001d804598,40,0) at rtm_output+0xba9 sys/net/rtsock.c:1120
route_output(fffffd805bce2800,fffffd805e55a960,0,0) at route_output+0x678 sys/net/rtsock.c:832
route_usrreq(fffffd805e55a960,9,fffffd805bce2800,0,0,ffff80001d7739e0) at route_usrreq+0x36f sys/net/rtsock.c:275
sosend(fffffd805e55a960,0,ffff80001d804830,0,0,0) at sosend+0x669 sys/kern/uipc_socket.c:549
sendit(ffff80001d7739e0,3,ffff80001d804910,0,ffff80001d8049f0) at sendit+0x52b sys/kern/uipc_syscalls.c:652
sys_sendto(ffff80001d7739e0,ffff80001d8049a8,ffff80001d8049f0) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:517
syscall(ffff80001d804a70) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x117fbb636c0, count: -11
ddb> machine ddbcpu 1
No such command
ddb> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff821dd1e7) at panic+0x15c sys/kern/subr_prf.c:207
__assert(ffffffff82234954,ffffffff821f058d,3ab,ffffffff821bd5b1) at __assert+0x2b sys/kern/subr_prf.c:154
rtm_output(ffff800000a3e400,ffff80001d804640,ffff80001d804598,40,0) at rtm_output+0xba9 sys/net/rtsock.c:1120
route_output(fffffd805bce2800,fffffd805e55a960,0,0) at route_output+0x678 sys/net/rtsock.c:832
route_usrreq(fffffd805e55a960,9,fffffd805bce2800,0,0,ffff80001d7739e0) at route_usrreq+0x36f sys/net/rtsock.c:275
sosend(fffffd805e55a960,0,ffff80001d804830,0,0,0) at sosend+0x669 sys/kern/uipc_socket.c:549
sendit(ffff80001d7739e0,3,ffff80001d804910,0,ffff80001d8049f0) at sendit+0x52b sys/kern/uipc_syscalls.c:652
sys_sendto(ffff80001d7739e0,ffff80001d8049a8,ffff80001d8049f0) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:517
syscall(ffff80001d804a70) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x117fbb636c0, count: -11
---
This bug is generated by a bot. It may contain errors.
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syzbot
Aug 9, 2020, 3:27:11 PM8/9/20
to syzkaller-o...@googlegroups.com
Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.
Crashes did not happen for a while, no reproducer and no activity.
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