panic: pfi_dynaddr_setup: dyn is 0xbbaa

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syzbot

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Apr 30, 2020, 2:06:17 AM4/30/20
to syzkaller-f...@googlegroups.com
Hello,

syzbot found the following crash on:

HEAD commit: 2338a28d Add nhop to the ifa_rtrequest() callback.
git tree: freebsd
console output: https://syzkaller.appspot.com/x/log.txt?x=15f1743fe00000
dashboard link: https://syzkaller.appspot.com/bug?extid=b9680bf1d5521a2c1eeb

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+b9680b...@syzkaller.appspotmail.com

panic: pfi_dynaddr_setup: dyn is 0xbbaa
cpuid = 1
time = 74
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe0025acc110
vpanic() at vpanic+0x1c7/frame 0xfffffe0025acc170
panic() at panic+0x43/frame 0xfffffe0025acc1d0
pfi_dynaddr_setup() at pfi_dynaddr_setup+0x590/frame 0xfffffe0025acc260
pfioctl() at pfioctl+0x6e4f/frame 0xfffffe0025acc790
devfs_ioctl() at devfs_ioctl+0x14e/frame 0xfffffe0025acc7f0
VOP_IOCTL_APV() at VOP_IOCTL_APV+0x78/frame 0xfffffe0025acc820
vn_ioctl() at vn_ioctl+0x27c/frame 0xfffffe0025acc940
devfs_ioctl_f() at devfs_ioctl_f+0x47/frame 0xfffffe0025acc980
kern_ioctl() at kern_ioctl+0x3d4/frame 0xfffffe0025acc9f0
sys_ioctl() at sys_ioctl+0x22b/frame 0xfffffe0025accac0
amd64_syscall() at amd64_syscall+0x262/frame 0xfffffe0025accbf0
fast_syscall_common() at fast_syscall_common+0x101/frame 0xfffffe0025accbf0
--- syscall (198, FreeBSD ELF64, nosys), rip = 0x80071d48a, rsp = 0x7fffdfffdf38, rbp = 0x3 ---
KDB: enter: panic
[ thread pid 3968 tid 100175 ]
Stopped at kdb_enter+0x67: movq $0,0x14a96a6(%rip)
db>
db> set $lines = 0
db> set $maxwidth = 0
db> show registers
cs 0x20
ds 0x3b ll+0x1a
es 0x3b ll+0x1a
fs 0x13
gs 0x1b
ss 0x28 ll+0x7
rax 0x12
rcx 0xfffffe002e000000
rdx 0x3ffff
rbx 0
rsp 0xfffffe0025acc0f0
rbp 0xfffffe0025acc110
rsi 0x40001
rdi 0xffffffff810b8f46 vprintf+0x176
r8 0
r9 0xffffffff
r10 0
r11 0xfffffe0025801300
r12 0xffffffff82068ea0 ddb_dbbe
r13 0
r14 0xffffffff8194403f
r15 0xffffffff8194403f
rip 0xffffffff810ae1c7 kdb_enter+0x67
rflags 0x86 ll+0x65
kdb_enter+0x67: movq $0,0x14a96a6(%rip)
db> show proc
Process 3968 (syz-executor.3) at 0xfffff800134f4a40:
state: NORMAL
uid: 0 gids: 0, 0, 5
parent: pid 3482 at 0xfffff80013676000
ABI: FreeBSD ELF64
arguments: /root/syz-executor.3
reaper: 0xfffff80003304000 reapsubtree: 1
sigparent: 20
vmspace: 0xfffffe0025852000
(map 0xfffffe0025852000)
(map.pmap 0xfffffe00258520c0)
(pmap 0xfffffe0025852120)
threads: 2
100321 Run CPU 0 syz-executor.3
100175 Run CPU 1 syz-executor.3
db> ps
pid ppid pgrp uid state wmesg wchan cmd
3973 3342 3342 0 R syz-executor.1
3972 3440 3440 0 R (threaded) syz-executor.2
100103 RunQ syz-executor.2
100177 RunQ syz-executor.2
3971 3259 3259 0 R syz-executor.0
3968 3482 3482 0 R (threaded) syz-executor.3
100321 Run CPU 0 syz-executor.3
100175 Run CPU 1 syz-executor.3
3482 768 3482 0 Rs syz-executor.3
3440 768 3440 0 Rs syz-executor.2
3342 768 3342 0 Ss nanslp 0xffffffff8252c1e1 syz-executor.1
3291 3283 3291 0 Ss select 0xfffff800035227c0 dhclient
3287 1 3287 0 Ss select 0xfffff8006f3de7c0 dhclient
3283 3276 424 65 S select 0xfffff8002108a640 dhclient
3276 424 424 0 S wait 0xfffff800133dfa40 sh
3259 768 3259 0 Rs syz-executor.0
768 766 766 0 S (threaded) syz-fuzzer
100105 S uwait 0xfffff8000380b680 syz-fuzzer
100106 S uwait 0xfffff8000380e880 syz-fuzzer
100107 S uwait 0xfffff80003a33200 syz-fuzzer
100108 S uwait 0xfffff80003a33300 syz-fuzzer
100109 S uwait 0xfffff8000380b780 syz-fuzzer
100110 S uwait 0xfffff8000380b880 syz-fuzzer
100111 S uwait 0xfffff80003a33400 syz-fuzzer
100112 S uwait 0xfffff80003a34d80 syz-fuzzer
100113 S kqread 0xfffff80003a39800 syz-fuzzer
100115 S uwait 0xfffff8000380c580 syz-fuzzer
100119 S uwait 0xfffff8000380c680 syz-fuzzer
766 764 766 0 SWs pause 0xfffff800134f40a8 csh
764 682 764 0 Ss select 0xfffff8000380c7c0 sshd
748 1 748 0 Ss+ ttyin 0xfffff80003805cb0 getty
747 1 747 0 Ss+ ttyin 0xfffff80003b068b0 getty
746 1 746 0 Ss+ ttyin 0xfffff80003b06cb0 getty
745 1 745 0 Ss+ ttyin 0xfffff80003b050b0 getty
744 1 744 0 Ss+ ttyin 0xfffff80003b054b0 getty
743 1 743 0 Ss+ ttyin 0xfffff80003b058b0 getty
742 1 742 0 Ss+ ttyin 0xfffff80003b05cb0 getty
741 1 741 0 Ss+ ttyin 0xfffff80003b080b0 getty
740 1 740 0 Ss+ ttyin 0xfffff80003b084b0 getty
686 1 686 0 Ss nanslp 0xffffffff8252c1e1 cron
682 1 682 0 Ss select 0xfffff8000380b2c0 sshd
495 1 495 0 Ss select 0xfffff80003a33e40 syslogd
424 1 424 0 Ss wait 0xfffff80003cb4a40 devd
423 1 423 65 Ss select 0xfffff8000380b240 dhclient
338 1 338 0 Ss select 0xfffff8000380b1c0 dhclient
335 1 335 0 Ss select 0xfffff8000380cec0 dhclient
23 0 0 0 DL syncer 0xffffffff82618118 [syncer]
22 0 0 0 DL vlruwt 0xfffff800033c6a40 [vnlru]
21 0 0 0 DL (threaded) [bufdaemon]
100069 D qsleep 0xffffffff82617438 [bufdaemon]
100076 D - 0xffffffff8200aa00 [bufspacedaemon-0]
100085 D sdflush 0xfffff80003806ce8 [/ worker]
20 0 0 0 DL psleep 0xffffffff8263e308 [vmdaemon]
19 0 0 0 DL (threaded) [pagedaemon]
100067 D psleep 0xffffffff826328d8 [dom0]
100074 D launds 0xffffffff826328e4 [laundry: dom0]
100075 D umarcl 0xffffffff81545a10 [uma]
18 0 0 0 DL - 0xffffffff8235fe20 [rand_harvestq]
17 0 0 0 DL pftm 0xffffffff82c353a0 [pf purge]
16 0 0 0 DL waiting 0xffffffff8261a890 [sctp_iterator]
15 0 0 0 DL - 0xffffffff82616a2c [soaiod4]
9 0 0 0 DL - 0xffffffff82616a2c [soaiod3]
8 0 0 0 DL - 0xffffffff82616a2c [soaiod2]
7 0 0 0 DL - 0xffffffff82616a2c [soaiod1]
6 0 0 0 DL (threaded) [cam]
100033 D - 0xffffffff82237b40 [doneq0]
100066 D - 0xffffffff82237a10 [scanner]
5 0 0 0 DL crypto_ 0xfffff80003202d90 [crypto returns 1]
4 0 0 0 DL crypto_ 0xfffff80003202d30 [crypto returns 0]
3 0 0 0 DL crypto_ 0xffffffff826300c0 [crypto]
14 0 0 0 DL seqstat 0xfffff80003351488 [sequencer 00]
13 0 0 0 DL (threaded) [geom]
100024 D - 0xffffffff8250b180 [g_event]
100025 D - 0xffffffff8250b188 [g_up]
100026 D - 0xffffffff8250b190 [g_down]
2 0 0 0 DL (threaded) [KTLS]
100017 D - 0xfffff800032fac80 [thr_0]
100018 D - 0xfffff800032facc0 [thr_1]
12 0 0 0 WL (threaded) [intr]
100010 I [swi6: Giant taskq]
100013 I [swi5: fast taskq]
100016 I [swi6: task queue]
100019 I [swi3: vm]
100020 I [swi4: clock (0)]
100021 I [swi4: clock (1)]
100022 I [swi1: netisr 0]
100034 I [irq24: virtio_pci0]
100035 I [irq25: virtio_pci0]
100036 I [irq26: virtio_pci0]
100037 I [irq27: virtio_pci0]
100038 I [irq28: virtio_pci1]
100039 I [irq29: virtio_pci1]
100040 I [irq30: virtio_pci1]
100041 I [irq31: virtio_pci1]
100042 I [irq32: virtio_pci1]
100047 I [irq10: virtio_pci2]
100049 I [irq1: atkbd0]
100050 I [irq12: psm0]
100051 I [swi0: uart uart++]
100060 I [swi1: pf send]
100072 I [swi1: hpts]
100073 I [swi1: hpts]
11 0 0 0 RL (threaded) [idle]
100003 CanRun [idle: cpu0]
100004 CanRun [idle: cpu1]
1 0 1 0 SLs wait 0xfffff80003304000 [init]
10 0 0 0 DL audit_w 0xffffffff82630598 [audit]
0 0 0 0 DLs (threaded) [kernel]
100000 D swapin 0xffffffff8250b710 [swapper]
100005 D - 0xfffff80003325000 [if_config_tqg_0]
100006 D - 0xfffff80003326e00 [softirq_0]
100007 D - 0xfffff80003326d00 [softirq_1]
100008 D - 0xfffff80003326c00 [if_io_tqg_0]
100009 D - 0xfffff80003326b00 [if_io_tqg_1]
100011 D - 0xfffff80003333600 [in6m_free taskq]
100012 D - 0xfffff80003333500 [thread taskq]
100014 D - 0xfffff80003333200 [kqueue_ctx taskq]
100015 D - 0xfffff80003333100 [aiod_kick taskq]
100023 D - 0xfffff80003334800 [firmware taskq]
100028 D - 0xfffff80003331c00 [crypto_0]
100029 D - 0xfffff80003331c00 [crypto_1]
100043 D - 0xfffff80003562c00 [vtnet0 rxq 0]
100044 D - 0xfffff80003562b00 [vtnet0 txq 0]
100045 D - 0xfffff80003562a00 [vtnet0 rxq 1]
100046 D - 0xfffff80003562900 [vtnet0 txq 1]
100048 D vtbslp 0xfffff80003522680 [virtio_balloon]
100052 D - 0xfffff80003335700 [mca taskq]
100057 D - 0xffffffff81ce7760 [deadlkres]
100062 D - 0xfffff80003331800 [acpi_task_0]
100063 D - 0xfffff80003331800 [acpi_task_1]
100064 D - 0xfffff80003331800 [acpi_task_2]
100065 D - 0xfffff80003331500 [CAM taskq]
db> show all locks
Process 3968 (syz-executor.3) thread 0xfffffe0025800e00 (100175)
exclusive rm pf rulesets (pf rulesets) r = 0 (0xffffffff82c87290) locked @ /syzkaller/managers/main/kernel/sys/netpfil/pf/pf_ioctl.c:1585
db> show malloc
Type InUse MemUse Requests
pf_hash 5 11524K 5
devbuf 4213 4851K 4241
tcp_hpts 5 3201K 5
vtbuf 24 1968K 46
sysctloid 28335 1653K 28399
kobj 332 1328K 488
newblk 9 1026K 20695
vfscache 4 1025K 4
pcb 89 596K 2880
inodedep 163 593K 5721
ufs_quota 1 512K 1
vfs_hash 1 512K 1
callout 2 512K 2
intr 4 388K 4
subproc 128 257K 4047
acpica 1674 185K 52709
vnet_data 1 168K 1
filedesc 22 153K 5701
pagedep 9 130K 3624
tfo_ccache 1 128K 1
sem 4 106K 4
DEVFS1 105 105K 122
linker 244 92K 439
bus 1136 86K 3592
mtx_pool 2 72K 2
syncache 1 68K 1
acpitask 1 64K 1
ddb_capture 1 64K 1
module 497 63K 497
pf_rule 58 51K 492
temp 41 45K 9451
umtx 342 43K 342
dirrem 154 39K 3278
pf_ifnet 150 39K 1133
BPF 22 36K 126
kdtrace 176 34K 15324
hostcache 1 32K 1
shm 1 32K 6
DEVFS3 124 31K 134
msg 4 30K 4
vmem 3 28K 6
DEVFS_RULE 56 27K 56
sctp_atcl 52 26K 1412
sctp_stro 26 26K 469
gtaskqueue 18 26K 18
ifaddr 72 24K 248
kbdmux 6 22K 6
freefile 154 20K 3242
routetbl 78 17K 4844
ufs_mount 3 17K 4
proc 3 17K 3
lltable 44 16K 344
tty 16 16K 16
tidhash 1 16K 1
ithread 98 16K 98
pf_table 7 14K 1125
ether_multi 172 14K 1362
bus-sc 30 14K 1431
KTRACE 100 13K 100
ifnet 7 13K 7
kenv 95 12K 99
eventhandler 132 12K 132
lockf 93 11K 2059
in6_multi 89 11K 830
pfs_nodes 20 10K 20
GEOM 60 10K 487
rman 82 10K 423
select 69 9K 69
sctp_ifa 68 9K 179
bmsafemap 2 9K 4836
UART 12 9K 12
devstat 4 9K 4
rpc 2 8K 2
sctp_timw 32 8K 32
shmfd 1 8K 31
pfs_vncache 1 8K 1
audit_evclass 233 8K 291
cred 29 8K 674
CAM DEV 3 6K 510
kqueue 57 6K 3980
vt 11 6K 11
plimit 21 6K 1743
sglist 5 6K 5
CAM queue 5 6K 1528
ufs_dirhash 23 5K 27
taskqueue 45 5K 45
DEVFSP 72 5K 1074
memdesc 1 4K 1
MCA 32 4K 32
UMA 249 4K 249
ioctlops 1 4K 1910
evdev 4 4K 4
kcovinfo 64 4K 986
sctp_atky 78 4K 1891
hhook 13 4K 13
session 25 4K 123
pgrp 25 4K 129
acpisem 22 3K 22
terminal 11 3K 11
proc-args 44 3K 1558
uidinfo 4 3K 21
local_apic 1 2K 1
io_apic 1 2K 1
ipsec-saq 2 2K 2
ip6ndp 12 2K 130
Unitno 33 2K 12619
CAM XPT 22 2K 543
in_multi 6 2K 67
acpidev 20 2K 20
pf_osfp 11 2K 11
msi 9 2K 9
tun 7 2K 7
freework 5 2K 9261
softdep 1 1K 1
mkdir 8 1K 5136
freeblks 4 1K 3485
ipsecpolicy 1 1K 1
sahead 1 1K 1
secasvar 1 1K 1
clone 8 1K 8
vnodemarker 2 1K 2494
NFSD session 1 1K 1
CAM periph 4 1K 271
sctp_athm 52 1K 1418
sctp_map 52 1K 938
mld 6 1K 6
sctp_ifn 6 1K 60
igmp 6 1K 6
nhops 6 1K 8
toponodes 6 1K 6
isadev 6 1K 6
mount 16 1K 86
pci_link 10 1K 10
inpcbpolicy 22 1K 10434
crypto 3 1K 3
newdirblk 4 1K 2568
diradd 4 1K 3532
pfil 4 1K 4
chacha20random 1 1K 1
CAM SIM 2 1K 2
epoch 4 1K 4
cdev 2 1K 2
encap_export_host 8 1K 8
osd 3 1K 9
vnodes 1 1K 31
NFSD lckfile 1 1K 1
NFSD V4client 1 1K 1
DEVFS 9 1K 10
feeder 7 1K 7
tcpfunc 3 1K 3
loginclass 3 1K 6
CAM dev queue 2 1K 2
CAM I/O Scheduler 1 1K 1
apmdev 1 1K 1
atkbddev 2 1K 2
CAM path 4 1K 1034
ktls 1 1K 1
pmchooks 1 1K 1
prison 4 1K 4
soname 4 1K 8127
nexusdev 5 1K 5
entropy 2 1K 107
sctp_vrf 1 1K 1
vnet 1 1K 1
acpiintr 1 1K 1
pmc 1 1K 1
cpus 2 1K 2
vnet_data_free 1 1K 1
Per-cpu 1 1K 1
filecaps 2 1K 181
p1003.1b 1 1K 1
pf_altq 0 0K 0
pf_temp 0 0K 0
ath_hal 0 0K 0
madt_table 0 0K 2
athdev 0 0K 0
ata_pci 0 0K 0
ata_dma 0 0K 0
ata_generic 0 0K 0
amr 0 0K 0
scsi_da 0 0K 69
ata_da 0 0K 0
pvscsi 0 0K 0
smartpqi 0 0K 0
scsi_ch 0 0K 0
scsi_cd 0 0K 0
USBdev 0 0K 0
USB 0 0K 0
AHCI driver 0 0K 0
agp 0 0K 0
iavf 0 0K 0
ixl 0 0K 0
nvme_da 0 0K 0
acpipwr 0 0K 0
twsbuf 0 0K 0
twe_commands 0 0K 0
twa_commands 0 0K 0
tcp_log_dev 0 0K 18
midi buffers 0 0K 0
fpukern_ctx 0 0K 0
mixer 0 0K 0
xen_intr 0 0K 0
ac97 0 0K 0
xen_hvm 0 0K 0
legacydrv 0 0K 0
qpidrv 0 0K 0
hdacc 0 0K 0
hdac 0 0K 0
dmar_idpgtbl 0 0K 0
dmar_dom 0 0K 0
dmar_ctx 0 0K 0
dmar_dmamap 0 0K 0
hdaa 0 0K 0
acpi_perf 0 0K 0
acpicmbat 0 0K 0
isci 0 0K 0
bxe_ilt 0 0K 0
xenbus 0 0K 0
SIIS driver 0 0K 0
vm_fictitious 0 0K 0
CAM CCB 0 0K 109457
PUC 0 0K 0
ppbusdev 0 0K 0
agtiapi_MemAlloc malloc 0 0K 0
osti_cacheable 0 0K 0
tempbuff 0 0K 0
tempbuff 0 0K 0
UMAHash 0 0K 0
ag_tgt_map_t malloc 0 0K 0
ag_slr_map_t malloc 0 0K 0
vm_pgdata 0 0K 0
jblocks 0 0K 0
savedino 0 0K 4089
sentinel 0 0K 0
jfsync 0 0K 0
jtrunc 0 0K 0
sbdep 0 0K 1212
jsegdep 0 0K 0
jseg 0 0K 0
jfreefrag 0 0K 0
jfreeblk 0 0K 0
jnewblk 0 0K 0
jmvref 0 0K 0
jremref 0 0K 0
jaddref 0 0K 0
freedep 0 0K 0
freefrag 0 0K 115
allocindir 0 0K 0
indirdep 0 0K 8016
allocdirect 0 0K 0
ufs_trim 0 0K 0
mactemp 0 0K 0
audit_trigger 0 0K 0
audit_pipe_presel 0 0K 0
audit_pipeent 0 0K 0
audit_pipe 0 0K 0
audit_evname 0 0K 0
audit_bsm 0 0K 0
audit_gidset 0 0K 0
audit_text 0 0K 0
audit_path 0 0K 0
audit_data 0 0K 0
audit_cred 0 0K 0
xform 0 0K 0
NLM 0 0K 0
ipsec-spdcache 0 0K 0
ipsec-reg 0 0K 0
ipsec-misc 0 0K 0
ipsecrequest 0 0K 0
ip6opt 0 0K 65
ip6_msource 0 0K 0
ip6_moptions 0 0K 2
in6_mfilter 0 0K 2
frag6 0 0K 0
tcplog 0 0K 0
lDevFlags * malloc 0 0K 0
LRO 0 0K 0
sctp_mcore 0 0K 0
sctp_socko 0 0K 992
sctp_iter 0 0K 173
sctp_mvrf 0 0K 0
sctp_cpal 0 0K 0
sctp_cmsg 0 0K 0
sctp_stre 0 0K 0
sctp_athi 0 0K 0
sctp_a_it 0 0K 173
sctp_aadr 0 0K 148
sctp_stri 0 0K 12
newreno data 0 0K 0
ip_msource 0 0K 8
ip_moptions 0 0K 14
in_mfilter 0 0K 20
ipid 0 0K 0
80211scan 0 0K 0
80211ratectl 0 0K 0
80211power 0 0K 0
80211nodeie 0 0K 0
80211node 0 0K 0
80211mesh_gt 0 0K 0
80211mesh_rt 0 0K 0
80211perr 0 0K 0
80211prep 0 0K 0
80211preq 0 0K 0
80211dfs 0 0K 0
80211crypto 0 0K 0
80211vap 0 0K 0
iflib 0 0K 0
vlan 0 0K 0
gif 0 0K 0
ifdescr 0 0K 0
zlib 0 0K 0
fadvise 0 0K 12
tiDeviceHandle_t * malloc 0 0K 0
statfs 0 0K 2637
export_host 0 0K 0
cl_savebuf 0 0K 45
ag_portal_data_t malloc 0 0K 0
ag_device_t malloc 0 0K 0
STLock malloc 0 0K 0
CCB List 0 0K 0
sr_iov 0 0K 0
OCS 0 0K 0
OCS 0 0K 0
nvme 0 0K 0
nvd 0 0K 0
netmap 0 0K 0
mwldev 0 0K 0
MVS driver 0 0K 0
CAM ccb queue 0 0K 0
mrsasbuf 0 0K 0
mpt_user 0 0K 0
mps_user 0 0K 0
biobuf 0 0K 0
aios 0 0K 0
lio 0 0K 0
acl 0 0K 0
MPSSAS 0 0K 0
mbuf_tag 0 0K 1791
accf 0 0K 0
pts 0 0K 0
iov 0 0K 29716
Witness 0 0K 0
stack 0 0K 0
mps 0 0K 0
mpr_user 0 0K 0
MPRSAS 0 0K 0
mpr 0 0K 0
mfibuf 0 0K 0
md_sectors 0 0K 0
sbuf 0 0K 288
md_disk 0 0K 0
compressor 0 0K 0
malodev 0 0K 0
SWAP 0 0K 0
LED 0 0K 0
sysctltmp 0 0K 905
sysctl 0 0K 1
ekcd 0 0K 0
dumper 0 0K 0
sendfile 0 0K 0
rctl 0 0K 0
ix_sriov 0 0K 0
aacraidcam 0 0K 0
ix 0 0K 0
ipsbuf 0 0K 0
iirbuf 0 0K 0
cache 0 0K 0
aacraid_buf 0 0K 0
prison_racct 0 0K 0
Fail Points 0 0K 0
sigio 0 0K 11
filedesc_to_leader 0 0K 0
pwd 0 0K 0
tty console 0 0K 0
aaccam 0 0K 0
aacbuf 0 0K 0
zstd 0 0K 0
nvlist 0 0K 0
SCSI ENC 0 0K 0
SCSI sa 0 0K 0
isofs_node 0 0K 0
isofs_mount 0 0K 0
tr_raid5_data 0 0K 0
tr_raid1e_data 0 0K 0
tr_raid1_data 0 0K 0
tr_raid0_data 0 0K 0
tr_concat_data 0 0K 0
md_sii_data 0 0K 0
md_promise_data 0 0K 0
md_nvidia_data 0 0K 0
md_jmicron_data 0 0K 0
md_intel_data 0 0K 0
md_ddf_data 0 0K 0
raid_data 0 0K 72
geom_flashmap 0 0K 0
NFS FHA 0 0K 0
newnfsmnt 0 0K 0
newnfsclient_req 0 0K 0
NFSCL layrecall 0 0K 0
NFSCL session 0 0K 0
NFSCL sockreq 0 0K 0
NFSCL devinfo 0 0K 0
NFSCL flayout 0 0K 0
NFSCL layout 0 0K 0
NFSD rollback 0 0K 0
NFSCL diroffdiroff 0 0K 0
NEWdirectio 0 0K 0
NEWNFSnode 0 0K 0
NFSCL lck 0 0K 0
NFSCL lckown 0 0K 0
NFSCL client 0 0K 0
NFSCL deleg 0 0K 0
NFSCL open 0 0K 0
NFSCL owner 0 0K 0
NFS fh 0 0K 0
NFS req 0 0K 0
NFSD usrgroup 0 0K 0
NFSD string 0 0K 0
NFSD V4lock 0 0K 0
NFSD V4state 0 0K 0
NFSD srvcache 0 0K 0
msdosfs_fat 0 0K 0
msdosfs_mount 0 0K 0
msdosfs_node 0 0K 0
DEVFS4 0 0K 0
DEVFS2 0 0K 0
gntdev 0 0K 0
privcmd_dev 0 0K 0
evtchn_dev 0 0K 0
xenstore 0 0K 0
scsi_pass 0 0K 0
ciss_data 0 0K 0
xnb 0 0K 0
xbbd 0 0K 0
xbd 0 0K 0
Balloon 0 0K 0
sysmouse 0 0K 0
vtfont 0 0K 0
db> show ktr
No such command; use "help" to list available commands


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syzbot

unread,
Apr 30, 2020, 2:21:16 AM4/30/20
to syzkaller-f...@googlegroups.com
syzbot has found a reproducer for the following crash on:

HEAD commit: 2338a28d Add nhop to the ifa_rtrequest() callback.
git tree: freebsd
console output: https://syzkaller.appspot.com/x/log.txt?x=12becae4100000
dashboard link: https://syzkaller.appspot.com/bug?extid=b9680bf1d5521a2c1eeb
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14cecc3fe00000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1126a8d4100000

IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+b9680b...@syzkaller.appspotmail.com

login: panic: pfi_dynaddr_setup: dyn is 0xbbaa
cpuid = 0
time = 1588227487
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe00255c7110
vpanic() at vpanic+0x1c7/frame 0xfffffe00255c7170
panic() at panic+0x43/frame 0xfffffe00255c71d0
pfi_dynaddr_setup() at pfi_dynaddr_setup+0x590/frame 0xfffffe00255c7260
pfioctl() at pfioctl+0x6e4f/frame 0xfffffe00255c7790
devfs_ioctl() at devfs_ioctl+0x14e/frame 0xfffffe00255c77f0
VOP_IOCTL_APV() at VOP_IOCTL_APV+0x78/frame 0xfffffe00255c7820
vn_ioctl() at vn_ioctl+0x27c/frame 0xfffffe00255c7940
devfs_ioctl_f() at devfs_ioctl_f+0x47/frame 0xfffffe00255c7980
kern_ioctl() at kern_ioctl+0x3d4/frame 0xfffffe00255c79f0
sys_ioctl() at sys_ioctl+0x22b/frame 0xfffffe00255c7ac0
amd64_syscall() at amd64_syscall+0x262/frame 0xfffffe00255c7bf0
fast_syscall_common() at fast_syscall_common+0x101/frame 0xfffffe00255c7bf0
--- syscall (0, FreeBSD ELF64, nosys), rip = 0x8008482ea, rsp = 0x7fffffffea78, rbp = 0x7fffffffead0 ---
KDB: enter: panic
[ thread pid 773 tid 100081 ]
Stopped at kdb_enter+0x67: movq $0,0x14a96a6(%rip)
db>
db> set $lines = 0
db> set $maxwidth = 0
db> show registers
cs 0x20
ds 0x3b ll+0x1a
es 0x3b ll+0x1a
fs 0x13
gs 0x1b
ss 0x28 ll+0x7
rax 0x12
rcx 0x80 ll+0x5f
rdx 0xffffffff818a400b
rbx 0
rsp 0xfffffe00255c70f0
rbp 0xfffffe00255c7110
rsi 0x1
rdi 0
r8 0
r9 0xffffffff
r10 0
r11 0xfffffe0023bc5c00
r12 0xffffffff82068ea0 ddb_dbbe
r13 0
r14 0xffffffff8194403f
r15 0xffffffff8194403f
rip 0xffffffff810ae1c7 kdb_enter+0x67
rflags 0x86 ll+0x65
kdb_enter+0x67: movq $0,0x14a96a6(%rip)
db> show proc
Process 773 (syz-executor4405801) at 0xfffff80003cb2520:
state: NORMAL
uid: 0 gids: 0, 0, 5
parent: pid 771 at 0xfffff80003cb3a40
ABI: FreeBSD ELF64
arguments: ./syz-executor440580180
reaper: 0xfffff80003304000 reapsubtree: 1
sigparent: 20
vmspace: 0xfffffe00257fa9e8
(map 0xfffffe00257fa9e8)
(map.pmap 0xfffffe00257faaa8)
(pmap 0xfffffe00257fab08)
threads: 1
100081 Run CPU 0 syz-executor4405801
db> ps
pid ppid pgrp uid state wmesg wchan cmd
773 771 771 0 R CPU 0 syz-executor4405801
771 769 771 0 Ss pause 0xfffff80003cb3ae8 csh
769 682 769 0 Rs CPU 1 sshd
748 1 748 0 Ss+ ttyin 0xfffff80003805cb0 getty
747 1 747 0 Ss+ ttyin 0xfffff80003b068b0 getty
746 1 746 0 Ss+ ttyin 0xfffff80003b06cb0 getty
745 1 745 0 Ss+ ttyin 0xfffff80003b050b0 getty
744 1 744 0 Ss+ ttyin 0xfffff80003b054b0 getty
743 1 743 0 Ss+ ttyin 0xfffff80003b058b0 getty
742 1 742 0 Ss+ ttyin 0xfffff80003b05cb0 getty
741 1 741 0 Ss+ ttyin 0xfffff80003b080b0 getty
740 1 740 0 Ss+ ttyin 0xfffff80003b084b0 getty
738 1 24 0 S+ piperd 0xfffff80003cc75f0 logger
737 736 24 0 S+ nanslp 0xffffffff8252c1e1 sleep
736 1 24 0 S+ wait 0xfffff80003cb3000 sh
686 1 686 0 Ss nanslp 0xffffffff8252c1e0 cron
682 1 682 0 Ss select 0xfffff8000380c4c0 sshd
495 1 495 0 Ss select 0xfffff80003522cc0 syslogd
424 1 424 0 Ss select 0xfffff8000380e2c0 devd
423 1 423 65 Ss select 0xfffff80003a361c0 dhclient
338 1 338 0 Ss select 0xfffff8000380c340 dhclient
335 1 335 0 Ss select 0xfffff8000380b640 dhclient
23 0 0 0 DL syncer 0xffffffff82618118 [syncer]
22 0 0 0 DL vlruwt 0xfffff800033c6a40 [vnlru]
21 0 0 0 DL (threaded) [bufdaemon]
100069 D qsleep 0xffffffff82617438 [bufdaemon]
100075 D - 0xffffffff8200aa00 [bufspacedaemon-0]
100087 D sdflush 0xfffff80003806ce8 [/ worker]
20 0 0 0 DL psleep 0xffffffff8263e308 [vmdaemon]
19 0 0 0 DL (threaded) [pagedaemon]
100067 D psleep 0xffffffff826328d8 [dom0]
100074 D launds 0xffffffff826328e4 [laundry: dom0]
100076 D umarcl 0xffffffff81545a10 [uma]
18 0 0 0 DL - 0xffffffff8235fe20 [rand_harvestq]
17 0 0 0 DL pftm 0xffffffff82bb23a0 [pf purge]
100057 D - 0xffffffff81ce7761 [deadlkres]
100062 D - 0xfffff80003331800 [acpi_task_0]
100063 D - 0xfffff80003331800 [acpi_task_1]
100064 D - 0xfffff80003331800 [acpi_task_2]
100065 D - 0xfffff80003331500 [CAM taskq]
db> show all locks
Process 773 (syz-executor4405801) thread 0xfffffe0023bc5700 (100081)
exclusive rm pf rulesets (pf rulesets) r = 0 (0xffffffff82c04290) locked @ /syzkaller/managers/main/kernel/sys/netpfil/pf/pf_ioctl.c:1585
Process 769 (sshd) thread 0xfffffe0023bde300 (100084)
exclusive sleep mutex pipe mutex (pipe mutex) r = 0 (0xfffff80003cc4eb0) locked @ /syzkaller/managers/main/kernel/sys/kern/sys_pipe.c:713
db> show malloc
Type InUse MemUse Requests
pf_hash 5 11524K 5
devbuf 4213 4851K 4238
tcp_hpts 5 3201K 5
vtbuf 24 1968K 46
sysctloid 28335 1653K 28399
kobj 332 1328K 488
newblk 192 1072K 208
vfscache 4 1025K 4
pcb 21 537K 75
inodedep 48 536K 71
ufs_quota 1 512K 1
vfs_hash 1 512K 1
callout 2 512K 2
intr 4 388K 4
subproc 104 213K 832
acpica 1674 185K 52709
vnet_data 1 168K 1
pagedep 14 132K 18
tfo_ccache 1 128K 1
sem 4 106K 4
DEVFS1 101 101K 110
linker 244 92K 265
bus 964 78K 3344
mtx_pool 2 72K 2
syncache 1 68K 1
acpitask 1 64K 1
ddb_capture 1 64K 1
module 497 63K 497
temp 18 33K 1538
hostcache 1 32K 1
shm 1 32K 1
umtx 252 32K 252
msg 4 30K 4
DEVFS3 120 30K 130
kdtrace 146 28K 1602
DEVFS_RULE 56 27K 56
gtaskqueue 18 26K 18
kbdmux 6 22K 6
vmem 3 21K 3
BPF 10 18K 10
ufs_mount 3 17K 4
proc 3 17K 3
tty 16 16K 16
tidhash 1 16K 1
ithread 98 16K 98
bus-sc 30 14K 1431
KTRACE 100 13K 100
ifaddr 30 12K 32
kenv 95 12K 99
eventhandler 132 12K 132
pfs_nodes 20 10K 20
GEOM 60 10K 487
rman 82 10K 423
bmsafemap 3 9K 40
UART 12 9K 12
devstat 4 9K 4
rpc 2 8K 2
shmfd 1 8K 1
pfs_vncache 1 8K 1
audit_evclass 233 8K 291
CAM DEV 3 6K 510
vt 11 6K 11
cred 21 6K 234
sglist 5 6K 5
CAM queue 5 6K 1528
taskqueue 45 5K 45
ufs_dirhash 24 5K 24
routetbl 28 5K 32
dirrem 17 5K 28
plimit 17 5K 322
ifnet 3 5K 3
memdesc 1 4K 1
MCA 32 4K 32
UMA 249 4K 249
ioctlops 1 4K 88
evdev 4 4K 4
filedesc 1 4K 1
lltable 11 4K 11
hhook 13 4K 13
ether_multi 40 4K 45
diradd 25 4K 36
pf_ifnet 5 3K 6
in6_multi 25 3K 25
kqueue 46 3K 776
acpisem 22 3K 22
terminal 11 3K 11
session 20 3K 31
pgrp 20 3K 31
uidinfo 3 3K 8
local_apic 1 2K 1
io_apic 1 2K 1
ipsec-saq 2 2K 2
select 16 2K 16
proc-args 39 2K 472
CAM XPT 22 2K 543
lockf 15 2K 22
Unitno 25 2K 37
acpidev 20 2K 20
msi 9 2K 9
pf_rule 1 1K 1
softdep 1 1K 1
ipsecpolicy 1 1K 1
sahead 1 1K 1
secasvar 1 1K 1
clone 8 1K 8
vnodemarker 2 1K 8
NFSD session 1 1K 1
CAM periph 4 1K 271
nhops 6 1K 6
toponodes 6 1K 6
isadev 6 1K 6
mount 16 1K 86
pci_link 10 1K 10
ip6ndp 4 1K 5
sctp_ifa 5 1K 5
crypto 3 1K 3
newdirblk 4 1K 8
mkdir 4 1K 16
in_multi 2 1K 3
pfil 4 1K 4
chacha20random 1 1K 1
CAM SIM 2 1K 2
epoch 4 1K 4
cdev 2 1K 2
encap_export_host 8 1K 8
osd 3 1K 9
indirdep 1 1K 1
mld 2 1K 2
sctp_ifn 2 1K 2
igmp 2 1K 2
vnodes 1 1K 1
NFSD lckfile 1 1K 1
NFSD V4client 1 1K 1
DEVFS 9 1K 10
feeder 7 1K 7
inpcbpolicy 6 1K 131
tcpfunc 3 1K 3
loginclass 3 1K 7
CAM dev queue 2 1K 2
CAM I/O Scheduler 1 1K 1
apmdev 1 1K 1
atkbddev 2 1K 2
CAM path 4 1K 1034
ktls 1 1K 1
pmchooks 1 1K 1
prison 4 1K 4
DEVFSP 2 1K 2
soname 4 1K 5788
filecaps 4 1K 66
tun 3 1K 3
nexusdev 5 1K 5
entropy 2 1K 35
sctp_vrf 1 1K 1
vnet 1 1K 1
acpiintr 1 1K 1
pmc 1 1K 1
cpus 2 1K 2
vnet_data_free 1 1K 1
Per-cpu 1 1K 1
freework 1 1K 26
p1003.1b 1 1K 1
pf_table 0 0K 0
pf_altq 0 0K 0
pf_osfp 0 0K 0
tcp_log_dev 0 0K 0
midi buffers 0 0K 0
fpukern_ctx 0 0K 0
mixer 0 0K 0
xen_intr 0 0K 0
ac97 0 0K 0
xen_hvm 0 0K 0
legacydrv 0 0K 0
qpidrv 0 0K 0
hdacc 0 0K 0
hdac 0 0K 0
dmar_idpgtbl 0 0K 0
dmar_dom 0 0K 0
dmar_ctx 0 0K 0
dmar_dmamap 0 0K 0
hdaa 0 0K 0
acpi_perf 0 0K 0
acpicmbat 0 0K 0
isci 0 0K 0
bxe_ilt 0 0K 0
xenbus 0 0K 0
SIIS driver 0 0K 0
vm_fictitious 0 0K 0
CAM CCB 0 0K 1725
PUC 0 0K 0
ppbusdev 0 0K 0
agtiapi_MemAlloc malloc 0 0K 0
osti_cacheable 0 0K 0
tempbuff 0 0K 0
tempbuff 0 0K 0
UMAHash 0 0K 0
ag_tgt_map_t malloc 0 0K 0
ag_slr_map_t malloc 0 0K 0
vm_pgdata 0 0K 0
jblocks 0 0K 0
savedino 0 0K 13
sentinel 0 0K 0
jfsync 0 0K 0
jtrunc 0 0K 0
sbdep 0 0K 3
jsegdep 0 0K 0
jseg 0 0K 0
jfreefrag 0 0K 0
jfreeblk 0 0K 0
jnewblk 0 0K 0
jmvref 0 0K 0
jremref 0 0K 0
jaddref 0 0K 0
freedep 0 0K 0
freefile 0 0K 9
freeblks 0 0K 25
freefrag 0 0K 5
allocindir 0 0K 0
allocdirect 0 0K 0
ufs_trim 0 0K 0
mactemp 0 0K 0
audit_trigger 0 0K 0
audit_pipe_presel 0 0K 0
audit_pipeent 0 0K 0
audit_pipe 0 0K 0
audit_evname 0 0K 0
audit_bsm 0 0K 0
audit_gidset 0 0K 0
audit_text 0 0K 0
audit_path 0 0K 0
audit_data 0 0K 0
audit_cred 0 0K 0
xform 0 0K 0
NLM 0 0K 0
ipsec-spdcache 0 0K 0
ipsec-reg 0 0K 0
ipsec-misc 0 0K 0
ipsecrequest 0 0K 0
ip6opt 0 0K 3
ip6_msource 0 0K 0
ip6_moptions 0 0K 0
in6_mfilter 0 0K 0
frag6 0 0K 0
tcplog 0 0K 0
lDevFlags * malloc 0 0K 0
LRO 0 0K 0
sctp_mcore 0 0K 0
sctp_socko 0 0K 0
sctp_iter 0 0K 3
sctp_mvrf 0 0K 0
sctp_timw 0 0K 0
sctp_cpal 0 0K 0
sctp_cmsg 0 0K 0
sctp_stre 0 0K 0
sctp_athi 0 0K 0
sctp_athm 0 0K 0
sctp_atky 0 0K 0
sctp_atcl 0 0K 0
sctp_a_it 0 0K 3
sctp_aadr 0 0K 0
sctp_stro 0 0K 0
sctp_stri 0 0K 0
sctp_map 0 0K 0
newreno data 0 0K 0
ip_msource 0 0K 0
ip_moptions 0 0K 0
in_mfilter 0 0K 0
ipid 0 0K 0
80211scan 0 0K 0
80211ratectl 0 0K 0
80211power 0 0K 0
80211nodeie 0 0K 0
80211node 0 0K 0
80211mesh_gt 0 0K 0
80211mesh_rt 0 0K 0
80211perr 0 0K 0
80211prep 0 0K 0
80211preq 0 0K 0
80211dfs 0 0K 0
80211crypto 0 0K 0
80211vap 0 0K 0
iflib 0 0K 0
vlan 0 0K 0
gif 0 0K 0
ifdescr 0 0K 0
zlib 0 0K 0
fadvise 0 0K 0
tiDeviceHandle_t * malloc 0 0K 0
statfs 0 0K 196
export_host 0 0K 0
cl_savebuf 0 0K 2
ag_portal_data_t malloc 0 0K 0
ag_device_t malloc 0 0K 0
STLock malloc 0 0K 0
CCB List 0 0K 0
sr_iov 0 0K 0
OCS 0 0K 0
OCS 0 0K 0
nvme 0 0K 0
nvd 0 0K 0
netmap 0 0K 0
mwldev 0 0K 0
MVS driver 0 0K 0
CAM ccb queue 0 0K 0
mrsasbuf 0 0K 0
mpt_user 0 0K 0
mps_user 0 0K 0
biobuf 0 0K 0
aios 0 0K 0
lio 0 0K 0
acl 0 0K 0
MPSSAS 0 0K 0
mbuf_tag 0 0K 25
accf 0 0K 0
pts 0 0K 0
iov 0 0K 12671
Witness 0 0K 0
stack 0 0K 0
mps 0 0K 0
mpr_user 0 0K 0
MPRSAS 0 0K 0
mpr 0 0K 0
mfibuf 0 0K 0
md_sectors 0 0K 0
sbuf 0 0K 288
md_disk 0 0K 0
compressor 0 0K 0
malodev 0 0K 0
SWAP 0 0K 0
LED 0 0K 0
sysctltmp 0 0K 574
sysctl 0 0K 1
ekcd 0 0K 0
dumper 0 0K 0
sendfile 0 0K 0
rctl 0 0K 0
ix_sriov 0 0K 0
aacraidcam 0 0K 0
ix 0 0K 0
ipsbuf 0 0K 0
iirbuf 0 0K 0
cache 0 0K 0
aacraid_buf 0 0K 0
kcovinfo 0 0K 0
prison_racct 0 0K 0
Fail Points 0 0K 0
sigio 0 0K 1

Mark Johnston

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Apr 30, 2020, 10:26:47 AM4/30/20
to syzbot, syzkaller-f...@googlegroups.com
#syz dup: panic: pfi_dynaddr_setup: dyn is ADDR (2)
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