panic: free: size too large NUM > NUM (ADDR) type rtable
0 views
Skip to first unread message
syzbot
Jul 15, 2026, 11:02:24 AM (6 days ago) Jul 15
to syzkaller-o...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: af68cf7bb0f1 Fix a potential 1-byte buffer overflow in usb..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=168444b9580000
kernel config: https://syzkaller.appspot.com/x/.config?x=1bc15e68cd2a49e5
dashboard link: https://syzkaller.appspot.com/bug?extid=064084701f73ec75ad93
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/2731571bb1cb/disk-af68cf7b.raw.xz
bsd.gdb: https://storage.googleapis.com/syzbot-assets/012c1459600a/bsd-af68cf7b.gdb.xz
kernel image: https://storage.googleapis.com/syzbot-assets/aa5158661707/kernel-af68cf7b.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+064084...@syzkaller.appspotmail.com
login: panic: free: size too large 100 > 16 (0xffff800000c57b20) type rtable
Stopped at db_enter+0x25: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff834bf744) at panic+0x1cf sys/kern/subr_prf.c:198
free(ffff800000c57b20,5,64) at free+0x690 sys/kern/kern_malloc.c:387
rtfree(fffff5006d9113c0) at rtfree+0x34e sys/net/route.c:646
rt_ifa_del(ffff800001607a00,800100,ffff800001607a68,0) at rt_ifa_del+0x44b sys/net/route.c:-1
in_purgeaddr(ffff800001607a00) at in_purgeaddr+0x129 in_remove_prefix sys/netinet/in.c:810 [inline]
in_purgeaddr(ffff800001607a00) at in_purgeaddr+0x129 in_ifscrub sys/netinet/in.c:636 [inline]
in_purgeaddr(ffff800001607a00) at in_purgeaddr+0x129 sys/netinet/in.c:751
in_ifdetach(ffff8000015c1000) at in_ifdetach+0x7e sys/netinet/in.c:1015
if_detach(ffff8000015c1000) at if_detach+0x322 sys/net/if.c:1311
tun_clone_destroy(ffff8000015c1000) at tun_clone_destroy+0x2a2 sys/net/if_tun.c:343
if_clone_destroy(ffff80002a885620) at if_clone_destroy+0x1d5 sys/net/if.c:1479
tun_dev_close(5d06,7) at tun_dev_close+0x1d9 sys/net/if_tun.c:526
spec_close(ffff80002a8856e0) at spec_close+0x417 sys/kern/spec_vnops.c:-1
VOP_CLOSE(fffff50071b8d538,7,fffff50007ffd7b8,ffff80002a736538) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156
vn_closefile(fffff5006d31ecb8,ffff80002a736538) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:298 [inline]
vn_closefile(fffff5006d31ecb8,ffff80002a736538) at vn_closefile+0x11d sys/kern/vfs_vnops.c:621
end trace frame: 0xffff80002a885800, count: 0
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
*cpu0: free: size too large 100 > 16 (0xffff800000c57b20) type rtable
ddb> show kasan
No such command
ddb> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff834bf744) at panic+0x1cf sys/kern/subr_prf.c:198
free(ffff800000c57b20,5,64) at free+0x690 sys/kern/kern_malloc.c:387
rtfree(fffff5006d9113c0) at rtfree+0x34e sys/net/route.c:646
rt_ifa_del(ffff800001607a00,800100,ffff800001607a68,0) at rt_ifa_del+0x44b sys/net/route.c:-1
in_purgeaddr(ffff800001607a00) at in_purgeaddr+0x129 in_remove_prefix sys/netinet/in.c:810 [inline]
in_purgeaddr(ffff800001607a00) at in_purgeaddr+0x129 in_ifscrub sys/netinet/in.c:636 [inline]
in_purgeaddr(ffff800001607a00) at in_purgeaddr+0x129 sys/netinet/in.c:751
in_ifdetach(ffff8000015c1000) at in_ifdetach+0x7e sys/netinet/in.c:1015
if_detach(ffff8000015c1000) at if_detach+0x322 sys/net/if.c:1311
tun_clone_destroy(ffff8000015c1000) at tun_clone_destroy+0x2a2 sys/net/if_tun.c:343
if_clone_destroy(ffff80002a885620) at if_clone_destroy+0x1d5 sys/net/if.c:1479
tun_dev_close(5d06,7) at tun_dev_close+0x1d9 sys/net/if_tun.c:526
spec_close(ffff80002a8856e0) at spec_close+0x417 sys/kern/spec_vnops.c:-1
VOP_CLOSE(fffff50071b8d538,7,fffff50007ffd7b8,ffff80002a736538) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156
vn_closefile(fffff5006d31ecb8,ffff80002a736538) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:298 [inline]
vn_closefile(fffff5006d31ecb8,ffff80002a736538) at vn_closefile+0x11d sys/kern/vfs_vnops.c:621
fdrop(fffff5006d31ecb8,ffff80002a736538) at fdrop+0x121 sys/kern/kern_descrip.c:1281
closef(fffff5006d31ecb8,ffff80002a736538) at closef+0x190 sys/kern/kern_descrip.c:1265
fdfree(ffff80002a736538) at fdfree+0x115 sys/kern/kern_descrip.c:1196
exit1(ffff80002a736538,1,0,1) at exit1+0x595 sys/kern/kern_exit.c:215
sys_exit(ffff80002a736538,ffff80002a885a40,ffff80002a885990) at sys_exit+0x1a sys/kern/kern_exit.c:-1
syscall(ffff80002a885a40) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80002a885a40) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x734cf66e0110, count: -21
ddb> show registers
rdi 0
rsi 0x1
rbp 0xffff80002a885190
rbx 0x10
rdx 0
rcx 0
rax 0xffff80002a736538
r8 0x101010101010101
r9 0x8080808080808080
r10 0x230122b8a2173b5e
r11 0x47e5ac75b0d89314
r12 0
r13 0x64
r14 0
r15 0x1
rip 0xffffffff8317a3f5 db_enter+0x25
cs 0x8
rflags 0x246
rsp 0xffff80002a885180
ss 0x10
db_enter+0x25: addq $0x8,%rsp
ddb> show proc
PROC (syz-executor) tid=223905 pid=94529 tcnt=0 stat=onproc
flags process=a<EXEC,EXITING> proc=2000<WEXIT>
runpri=32, usrpri=72, slppri=32, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=1
forw=0xffffffffffffffff, list=0xffff80002a767c98,0xffff80002a737ca0
process=0xffff80002a79ed10 user=0xffff80002a880000, vmspace=0xfffff500720d22e8
estcpu=22, cpticks=4, pctcpu=0.1, user=0, sys=1, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
9277 420156 0 0 3 0x14200 acct acct
89871 187204 1 0 3 0x100083 ttyin getty
17741 415898 0 0 3 0x14280 nfsidl nfsio
52360 35866 0 0 3 0x14280 nfsidl nfsio
32806 423644 0 0 3 0x14280 nfsidl nfsio
17958 202666 0 0 3 0x14280 nfsidl nfsio
56946 49246 0 0 3 0x14280 nfsidl nfsio
54412 372005 0 0 3 0x14280 nfsidl nfsio
18055 513954 0 0 3 0x14280 nfsidl nfsio
49617 246173 0 0 3 0x14280 nfsidl nfsio
18527 136843 0 0 3 0x14280 nfsidl nfsio
18380 144335 0 0 3 0x14280 nfsidl nfsio
62973 237061 0 0 3 0x14280 nfsidl nfsio
80442 311306 0 0 3 0x14280 nfsidl nfsio
56443 501330 0 0 3 0x14280 nfsidl nfsio
87144 356017 0 0 3 0x14280 nfsidl nfsio
78238 28884 0 0 3 0x14280 nfsidl nfsio
66106 72702 0 0 3 0x14280 nfsidl nfsio
87608 271695 0 0 3 0x14280 nfsidl nfsio
62758 181405 0 0 3 0x14280 nfsidl nfsio
16756 71466 0 0 3 0x14280 nfsidl nfsio
12094 123704 0 0 3 0x14280 nfsidl nfsio
63540 117462 1 0 3 0x82 wait syz-executor
55423 126897 0 0 3 0x14200 bored smr
42247 349048 0 0 3 0x14200 pgzero zerothread
39620 398774 0 0 3 0x14200 aiodoned aiodoned
11440 127435 0 0 3 0x14200 syncer update
92281 142922 0 0 3 0x14200 cleaner cleaner
76218 12480 0 0 3 0x14200 reaper reaper
7595 412557 0 0 3 0x14200 pgdaemon pagedaemon
45694 201758 0 0 3 0x14200 bored viomb
38618 239730 0 0 3 0x40014200 acpi0 acpi0
89967 436850 0 0 3 0x14200 bored softnet0
72718 315919 0 0 2 0x14200 systqmp
15021 59355 0 0 3 0x14200 bored systq
5483 491174 0 0 3 0x40014200 tmoslp softclock
90914 461622 0 0 3 0x40014200 idle0
1 436661 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 11015 12101K 12360K 166960K 12218 0
pcb 17 14K 16K 166960K 122 0
rtable 178 5K 9K 166960K 397 0
pf 26 12K 20K 166960K 56 0
ifaddr 30 5K 7K 166960K 48 0
ifgroup 38 1K 2K 166960K 62 0
sysctl 3 1K 9K 166960K 8 0
counters 30 17K 18K 166960K 37 0
ioctlops 0 0K 4K 166960K 66 0
iov 0 0K 2K 166960K 5 0
mount 1 1K 1K 166960K 1 0
log 0 0K 8K 166960K 5 0
vnodes 1321 83K 84K 166960K 1551 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 5K 166960K 7 0
VM map 2 1K 1K 166960K 2 0
sem 7 0K 0K 166960K 7 0
dirhash 12 2K 2K 166960K 12 0
ACPI 1734 201K 291K 166960K 11964 0
file desc 6 21K 93K 166960K 274 0
sigio 0 0K 0K 166960K 4 0
proc 20 25K 83K 166960K 530 0
subproc 45 2K 4K 166960K 72 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 46 0
in_multi 66 4K 7K 166960K 105 0
ether_multi 1 0K 0K 166960K 1 0
mrt 0 0K 0K 166960K 11 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 67 307K 307K 166960K 67 0
exec 0 0K 1K 166960K 381 0
fusefs mount 1 32K 32K 166960K 1 0
tdb 3 0K 0K 166960K 3 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 54 55K 172K 166960K 4123 0
UVM aobj 11 2K 2K 166960K 12 0
pinsyscall 9 18K 94K 166960K 1384 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 0K 166960K 3 0
NDP 8 0K 2K 166960K 30 0
temp 24 9109K 13206K 166960K 8905 0
kqueue 1 2K 28K 166960K 42 0
SYN cache 2 16K 16K 166960K 2 0
ddb> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
rtpcb 120 51 0 51 1 0 1 1 0 8 1
rtentry 136 117 0 40 4 0 4 4 0 8 0
unpcb 144 118 0 118 1 0 1 1 0 8 1
syncache 336 6 0 6 1 0 1 1 0 8 1
tcpcb 736 145 0 144 6 0 6 6 0 8 5
arp 96 19 0 7 1 0 1 1 0 8 0
ipq 40 1 0 0 1 0 1 1 0 8 0
ipqe 40 1 0 0 1 0 1 1 0 8 0
inpcb 328 319 0 318 12 2 10 12 0 8 9
ip6q 72 3 0 1 1 0 1 1 0 8 0
ip6af 40 5 0 3 1 0 1 1 0 8 0
nd6 112 25 0 10 1 0 1 1 0 8 0
kcovpl 48 8 0 3 1 0 1 1 0 8 0
ppxss 1072 2 0 2 1 0 1 1 0 8 1
pppxif 1416 1 0 1 1 0 1 1 0 8 1
pfstscr 40 3 0 3 1 0 1 1 0 8 1
pfrktable 1344 5 0 5 1 0 1 1 0 8 1
pfsrclim 320 1 0 1 1 0 1 1 0 8 1
pfanchor 1288 4 0 1 1 0 1 1 0 8 0
pftag 88 3 0 2 1 0 1 1 0 8 0
pfqueue 320 1 0 0 1 0 1 1 0 8 0
pfstkey 128 4 0 4 1 0 1 1 0 8 1
pfstate 384 2 0 2 1 0 1 1 0 8 1
pfrule 1360 2 0 2 1 0 1 1 0 8 1
rttmr 136 1 0 1 1 0 1 1 0 8 1
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 475 0 153 30 0 30 30 0 8 6
art_table 40 476 0 153 5 0 5 5 0 8 0
art_node 32 117 0 47 1 0 1 1 0 8 0
semapl 72 5 0 0 1 0 1 1 0 8 0
shmpl 112 9 0 1 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 1859 0 402 92 0 92 92 0 8 0
ffsino 256 1863 0 406 92 0 92 92 0 8 0
nchpl 144 2265 0 572 64 0 64 64 0 8 0
vnodes 216 2034 0 0 113 0 113 113 0 8 0
namei 1024 6924 0 6924 2 0 2 2 0 8 2
pfiaddrpl 120 1 0 1 1 0 1 1 0 8 1
kstatmem 264 29 0 12 2 0 2 2 0 8 0
scxspl 216 8662 0 8662 4 0 4 4 1 8 4
plimitpl 152 106 0 96 1 0 1 1 0 8 0
sigapl 424 591 0 545 8 0 8 8 0 8 0
knotepl 120 7068 0 7051 8 0 8 8 0 8 6
kqueuepl 184 53 0 52 1 0 1 1 0 8 0
pipepl 304 139 0 112 3 0 3 3 0 8 0
fdescpl 448 557 0 548 5 0 5 5 0 8 1
filepl 120 2635 0 2528 10 0 10 10 0 8 3
lockfpl 104 41 0 41 1 0 1 1 0 8 1
lockfspl 48 18 0 18 1 0 1 1 0 8 1
sessionpl 144 28 0 25 1 0 1 1 0 8 0
pgrppl 48 40 0 29 1 0 1 1 0 8 0
ucredpl 104 402 0 399 1 0 1 1 0 8 0
zombiepl 144 553 0 545 1 0 1 1 0 8 0
processpl 1152 591 0 545 5 0 5 5 0 8 0
procpl 664 808 0 762 7 0 7 7 0 8 1
sockpl 552 497 0 496 11 2 9 11 0 8 8
mcl64k 65536 44 0 43 1 0 1 1 0 8 0
mcl16k 16384 2 0 2 1 0 1 1 0 8 1
mcl8k 8192 9 0 8 1 0 1 1 0 8 0
mcl4k 4096 2682 0 2615 13 0 13 13 0 8 4
mcl2k 2048 202 0 202 2 0 2 2 0 8 2
mextrefs 64 105 0 105 1 0 1 1 0 8 1
mtagpl 96 5 0 5 1 0 1 1 0 8 1
mbufpl 256 5641 0 5567 17 0 17 17 0 8 7
bufpl 272 3261 0 103 211 0 211 211 0 8 0
anonpl 24 97354 0 96516 37 0 37 37 0 187 16
amapchunkpl 152 12191 0 12076 25 0 25 25 0 158 12
amappl16 200 1594 0 1582 15 3 12 15 0 8 8
amappl15 192 4 0 4 1 0 1 1 0 8 1
amappl14 184 410 0 410 1 0 1 1 0 8 1
amappl13 176 137 0 136 1 0 1 1 0 8 0
amappl12 168 838 0 830 2 0 2 2 0 8 0
amappl11 160 2 0 2 1 0 1 1 0 8 1
amappl10 152 59 0 59 1 0 1 1 0 8 1
amappl9 144 286 0 286 1 0 1 1 0 8 1
amappl8 136 93 0 93 1 0 1 1 0 8 1
amappl7 128 137 0 135 1 0 1 1 0 8 0
amappl6 120 145 0 145 1 0 1 1 0 8 1
amappl5 112 107 0 105 1 0 1 1 0 8 0
amappl4 104 287 0 284 1 0 1 1 0 8 0
amappl3 96 2322 0 2298 3 0 3 3 0 8 0
amappl2 88 523 0 512 2 0 2 2 0 8 0
amappl1 80 10698 0 10627 13 0 13 13 0 8 6
amappl 88 3411 0 3368 4 0 4 4 0 92 0
uvmvnodes 80 103 0 0 3 0 3 3 0 8 0
dma4096 4096 1 0 1 1 0 1 1 0 8 1
dma1024 1024 1 0 0 1 0 1 1 0 8 0
dma256 256 6 0 6 1 0 1 1 0 8 1
dma128 128 253 0 253 1 0 1 1 0 8 1
dma64 64 6 0 6 1 0 1 1 0 8 1
dma32 32 7 0 7 1 0 1 1 0 8 1
dma16 16 18 0 17 1 0 1 1 0 8 0
aobjpl 72 11 0 1 1 0 1 1 0 8 0
uaddrrnd 24 557 0 548 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 557 0 548 1 0 1 1 0 8 0
vmmpekpl 168 6540 0 6503 2 0 2 2 0 8 0
vmmpepl 168 44097 0 43753 80 0 80 80 0 357 42
vmsppl 368 556 0 548 4 0 4 4 0 8 1
rwobjpl 40 15355 0 15058 11 0 11 11 0 8 1
pdppl 4096 1120 0 1096 94 48 46 80 0 8 22
pvpl 32 254010 0 252112 74 0 74 74 0 265 27
pmappl 216 556 0 548 3 0 3 3 0 8 0
extentpl 40 46 0 28 1 0 1 1 0 8 0
phpool 112 580 0 48 16 0 16 16 0 8 0
ddb> machine ddbcpu 0
No such command
ddb> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff834bf744) at panic+0x1cf sys/kern/subr_prf.c:198
free(ffff800000c57b20,5,64) at free+0x690 sys/kern/kern_malloc.c:387
rtfree(fffff5006d9113c0) at rtfree+0x34e sys/net/route.c:646
rt_ifa_del(ffff800001607a00,800100,ffff800001607a68,0) at rt_ifa_del+0x44b sys/net/route.c:-1
in_purgeaddr(ffff800001607a00) at in_purgeaddr+0x129 in_remove_prefix sys/netinet/in.c:810 [inline]
in_purgeaddr(ffff800001607a00) at in_purgeaddr+0x129 in_ifscrub sys/netinet/in.c:636 [inline]
in_purgeaddr(ffff800001607a00) at in_purgeaddr+0x129 sys/netinet/in.c:751
in_ifdetach(ffff8000015c1000) at in_ifdetach+0x7e sys/netinet/in.c:1015
if_detach(ffff8000015c1000) at if_detach+0x322 sys/net/if.c:1311
tun_clone_destroy(ffff8000015c1000) at tun_clone_destroy+0x2a2 sys/net/if_tun.c:343
if_clone_destroy(ffff80002a885620) at if_clone_destroy+0x1d5 sys/net/if.c:1479
tun_dev_close(5d06,7) at tun_dev_close+0x1d9 sys/net/if_tun.c:526
spec_close(ffff80002a8856e0) at spec_close+0x417 sys/kern/spec_vnops.c:-1
VOP_CLOSE(fffff50071b8d538,7,fffff50007ffd7b8,ffff80002a736538) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156
vn_closefile(fffff5006d31ecb8,ffff80002a736538) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:298 [inline]
vn_closefile(fffff5006d31ecb8,ffff80002a736538) at vn_closefile+0x11d sys/kern/vfs_vnops.c:621
fdrop(fffff5006d31ecb8,ffff80002a736538) at fdrop+0x121 sys/kern/kern_descrip.c:1281
closef(fffff5006d31ecb8,ffff80002a736538) at closef+0x190 sys/kern/kern_descrip.c:1265
fdfree(ffff80002a736538) at fdfree+0x115 sys/kern/kern_descrip.c:1196
exit1(ffff80002a736538,1,0,1) at exit1+0x595 sys/kern/kern_exit.c:215
sys_exit(ffff80002a736538,ffff80002a885a40,ffff80002a885990) at sys_exit+0x1a sys/kern/kern_exit.c:-1
syscall(ffff80002a885a40) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80002a885a40) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x734cf66e0110, count: -21
ddb> machine ddbcpu 1
No such command
ddb> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff834bf744) at panic+0x1cf sys/kern/subr_prf.c:198
free(ffff800000c57b20,5,64) at free+0x690 sys/kern/kern_malloc.c:387
rtfree(fffff5006d9113c0) at rtfree+0x34e sys/net/route.c:646
rt_ifa_del(ffff800001607a00,800100,ffff800001607a68,0) at rt_ifa_del+0x44b sys/net/route.c:-1
in_purgeaddr(ffff800001607a00) at in_purgeaddr+0x129 in_remove_prefix sys/netinet/in.c:810 [inline]
in_purgeaddr(ffff800001607a00) at in_purgeaddr+0x129 in_ifscrub sys/netinet/in.c:636 [inline]
in_purgeaddr(ffff800001607a00) at in_purgeaddr+0x129 sys/netinet/in.c:751
in_ifdetach(ffff8000015c1000) at in_ifdetach+0x7e sys/netinet/in.c:1015
if_detach(ffff8000015c1000) at if_detach+0x322 sys/net/if.c:1311
tun_clone_destroy(ffff8000015c1000) at tun_clone_destroy+0x2a2 sys/net/if_tun.c:343
if_clone_destroy(ffff80002a885620) at if_clone_destroy+0x1d5 sys/net/if.c:1479
tun_dev_close(5d06,7) at tun_dev_close+0x1d9 sys/net/if_tun.c:526
spec_close(ffff80002a8856e0) at spec_close+0x417 sys/kern/spec_vnops.c:-1
VOP_CLOSE(fffff50071b8d538,7,fffff50007ffd7b8,ffff80002a736538) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156
vn_closefile(fffff5006d31ecb8,ffff80002a736538) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:298 [inline]
vn_closefile(fffff5006d31ecb8,ffff80002a736538) at vn_closefile+0x11d sys/kern/vfs_vnops.c:621
fdrop(fffff5006d31ecb8,ffff80002a736538) at fdrop+0x121 sys/kern/kern_descrip.c:1281
closef(fffff5006d31ecb8,ffff80002a736538) at closef+0x190 sys/kern/kern_descrip.c:1265
fdfree(ffff80002a736538) at fdfree+0x115 sys/kern/kern_descrip.c:1196
exit1(ffff80002a736538,1,0,1) at exit1+0x595 sys/kern/kern_exit.c:215
sys_exit(ffff80002a736538,ffff80002a885a40,ffff80002a885990) at sys_exit+0x1a sys/kern/kern_exit.c:-1
syscall(ffff80002a885a40) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80002a885a40) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x734cf66e0110, count: -21
ddb>
---
This report 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 issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
If the report is already addressed, let syzbot know by replying with:
#syz fix: exact-commit-title
If you want to overwrite report's subsystems, reply with:
#syz set subsystems: new-subsystem
(See the list of subsystem names on the web dashboard)
If the report is a duplicate of another one, reply with:
#syz dup: exact-subject-of-another-report
If you want to undo deduplication, reply with:
#syz undup
syzbot found the following issue on:
HEAD commit: af68cf7bb0f1 Fix a potential 1-byte buffer overflow in usb..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=168444b9580000
kernel config: https://syzkaller.appspot.com/x/.config?x=1bc15e68cd2a49e5
dashboard link: https://syzkaller.appspot.com/bug?extid=064084701f73ec75ad93
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/2731571bb1cb/disk-af68cf7b.raw.xz
bsd.gdb: https://storage.googleapis.com/syzbot-assets/012c1459600a/bsd-af68cf7b.gdb.xz
kernel image: https://storage.googleapis.com/syzbot-assets/aa5158661707/kernel-af68cf7b.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+064084...@syzkaller.appspotmail.com
login: panic: free: size too large 100 > 16 (0xffff800000c57b20) type rtable
Stopped at db_enter+0x25: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff834bf744) at panic+0x1cf sys/kern/subr_prf.c:198
free(ffff800000c57b20,5,64) at free+0x690 sys/kern/kern_malloc.c:387
rtfree(fffff5006d9113c0) at rtfree+0x34e sys/net/route.c:646
rt_ifa_del(ffff800001607a00,800100,ffff800001607a68,0) at rt_ifa_del+0x44b sys/net/route.c:-1
in_purgeaddr(ffff800001607a00) at in_purgeaddr+0x129 in_remove_prefix sys/netinet/in.c:810 [inline]
in_purgeaddr(ffff800001607a00) at in_purgeaddr+0x129 in_ifscrub sys/netinet/in.c:636 [inline]
in_purgeaddr(ffff800001607a00) at in_purgeaddr+0x129 sys/netinet/in.c:751
in_ifdetach(ffff8000015c1000) at in_ifdetach+0x7e sys/netinet/in.c:1015
if_detach(ffff8000015c1000) at if_detach+0x322 sys/net/if.c:1311
tun_clone_destroy(ffff8000015c1000) at tun_clone_destroy+0x2a2 sys/net/if_tun.c:343
if_clone_destroy(ffff80002a885620) at if_clone_destroy+0x1d5 sys/net/if.c:1479
tun_dev_close(5d06,7) at tun_dev_close+0x1d9 sys/net/if_tun.c:526
spec_close(ffff80002a8856e0) at spec_close+0x417 sys/kern/spec_vnops.c:-1
VOP_CLOSE(fffff50071b8d538,7,fffff50007ffd7b8,ffff80002a736538) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156
vn_closefile(fffff5006d31ecb8,ffff80002a736538) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:298 [inline]
vn_closefile(fffff5006d31ecb8,ffff80002a736538) at vn_closefile+0x11d sys/kern/vfs_vnops.c:621
end trace frame: 0xffff80002a885800, count: 0
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
*cpu0: free: size too large 100 > 16 (0xffff800000c57b20) type rtable
ddb> show kasan
No such command
ddb> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff834bf744) at panic+0x1cf sys/kern/subr_prf.c:198
free(ffff800000c57b20,5,64) at free+0x690 sys/kern/kern_malloc.c:387
rtfree(fffff5006d9113c0) at rtfree+0x34e sys/net/route.c:646
rt_ifa_del(ffff800001607a00,800100,ffff800001607a68,0) at rt_ifa_del+0x44b sys/net/route.c:-1
in_purgeaddr(ffff800001607a00) at in_purgeaddr+0x129 in_remove_prefix sys/netinet/in.c:810 [inline]
in_purgeaddr(ffff800001607a00) at in_purgeaddr+0x129 in_ifscrub sys/netinet/in.c:636 [inline]
in_purgeaddr(ffff800001607a00) at in_purgeaddr+0x129 sys/netinet/in.c:751
in_ifdetach(ffff8000015c1000) at in_ifdetach+0x7e sys/netinet/in.c:1015
if_detach(ffff8000015c1000) at if_detach+0x322 sys/net/if.c:1311
tun_clone_destroy(ffff8000015c1000) at tun_clone_destroy+0x2a2 sys/net/if_tun.c:343
if_clone_destroy(ffff80002a885620) at if_clone_destroy+0x1d5 sys/net/if.c:1479
tun_dev_close(5d06,7) at tun_dev_close+0x1d9 sys/net/if_tun.c:526
spec_close(ffff80002a8856e0) at spec_close+0x417 sys/kern/spec_vnops.c:-1
VOP_CLOSE(fffff50071b8d538,7,fffff50007ffd7b8,ffff80002a736538) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156
vn_closefile(fffff5006d31ecb8,ffff80002a736538) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:298 [inline]
vn_closefile(fffff5006d31ecb8,ffff80002a736538) at vn_closefile+0x11d sys/kern/vfs_vnops.c:621
fdrop(fffff5006d31ecb8,ffff80002a736538) at fdrop+0x121 sys/kern/kern_descrip.c:1281
closef(fffff5006d31ecb8,ffff80002a736538) at closef+0x190 sys/kern/kern_descrip.c:1265
fdfree(ffff80002a736538) at fdfree+0x115 sys/kern/kern_descrip.c:1196
exit1(ffff80002a736538,1,0,1) at exit1+0x595 sys/kern/kern_exit.c:215
sys_exit(ffff80002a736538,ffff80002a885a40,ffff80002a885990) at sys_exit+0x1a sys/kern/kern_exit.c:-1
syscall(ffff80002a885a40) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80002a885a40) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x734cf66e0110, count: -21
ddb> show registers
rdi 0
rsi 0x1
rbp 0xffff80002a885190
rbx 0x10
rdx 0
rcx 0
rax 0xffff80002a736538
r8 0x101010101010101
r9 0x8080808080808080
r10 0x230122b8a2173b5e
r11 0x47e5ac75b0d89314
r12 0
r13 0x64
r14 0
r15 0x1
rip 0xffffffff8317a3f5 db_enter+0x25
cs 0x8
rflags 0x246
rsp 0xffff80002a885180
ss 0x10
db_enter+0x25: addq $0x8,%rsp
ddb> show proc
PROC (syz-executor) tid=223905 pid=94529 tcnt=0 stat=onproc
flags process=a<EXEC,EXITING> proc=2000<WEXIT>
runpri=32, usrpri=72, slppri=32, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=1
forw=0xffffffffffffffff, list=0xffff80002a767c98,0xffff80002a737ca0
process=0xffff80002a79ed10 user=0xffff80002a880000, vmspace=0xfffff500720d22e8
estcpu=22, cpticks=4, pctcpu=0.1, user=0, sys=1, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
9277 420156 0 0 3 0x14200 acct acct
89871 187204 1 0 3 0x100083 ttyin getty
17741 415898 0 0 3 0x14280 nfsidl nfsio
52360 35866 0 0 3 0x14280 nfsidl nfsio
32806 423644 0 0 3 0x14280 nfsidl nfsio
17958 202666 0 0 3 0x14280 nfsidl nfsio
56946 49246 0 0 3 0x14280 nfsidl nfsio
54412 372005 0 0 3 0x14280 nfsidl nfsio
18055 513954 0 0 3 0x14280 nfsidl nfsio
49617 246173 0 0 3 0x14280 nfsidl nfsio
18527 136843 0 0 3 0x14280 nfsidl nfsio
18380 144335 0 0 3 0x14280 nfsidl nfsio
62973 237061 0 0 3 0x14280 nfsidl nfsio
80442 311306 0 0 3 0x14280 nfsidl nfsio
56443 501330 0 0 3 0x14280 nfsidl nfsio
87144 356017 0 0 3 0x14280 nfsidl nfsio
78238 28884 0 0 3 0x14280 nfsidl nfsio
66106 72702 0 0 3 0x14280 nfsidl nfsio
87608 271695 0 0 3 0x14280 nfsidl nfsio
62758 181405 0 0 3 0x14280 nfsidl nfsio
16756 71466 0 0 3 0x14280 nfsidl nfsio
12094 123704 0 0 3 0x14280 nfsidl nfsio
63540 117462 1 0 3 0x82 wait syz-executor
55423 126897 0 0 3 0x14200 bored smr
42247 349048 0 0 3 0x14200 pgzero zerothread
39620 398774 0 0 3 0x14200 aiodoned aiodoned
11440 127435 0 0 3 0x14200 syncer update
92281 142922 0 0 3 0x14200 cleaner cleaner
76218 12480 0 0 3 0x14200 reaper reaper
7595 412557 0 0 3 0x14200 pgdaemon pagedaemon
45694 201758 0 0 3 0x14200 bored viomb
38618 239730 0 0 3 0x40014200 acpi0 acpi0
89967 436850 0 0 3 0x14200 bored softnet0
72718 315919 0 0 2 0x14200 systqmp
15021 59355 0 0 3 0x14200 bored systq
5483 491174 0 0 3 0x40014200 tmoslp softclock
90914 461622 0 0 3 0x40014200 idle0
1 436661 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 11015 12101K 12360K 166960K 12218 0
pcb 17 14K 16K 166960K 122 0
rtable 178 5K 9K 166960K 397 0
pf 26 12K 20K 166960K 56 0
ifaddr 30 5K 7K 166960K 48 0
ifgroup 38 1K 2K 166960K 62 0
sysctl 3 1K 9K 166960K 8 0
counters 30 17K 18K 166960K 37 0
ioctlops 0 0K 4K 166960K 66 0
iov 0 0K 2K 166960K 5 0
mount 1 1K 1K 166960K 1 0
log 0 0K 8K 166960K 5 0
vnodes 1321 83K 84K 166960K 1551 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 5K 166960K 7 0
VM map 2 1K 1K 166960K 2 0
sem 7 0K 0K 166960K 7 0
dirhash 12 2K 2K 166960K 12 0
ACPI 1734 201K 291K 166960K 11964 0
file desc 6 21K 93K 166960K 274 0
sigio 0 0K 0K 166960K 4 0
proc 20 25K 83K 166960K 530 0
subproc 45 2K 4K 166960K 72 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 46 0
in_multi 66 4K 7K 166960K 105 0
ether_multi 1 0K 0K 166960K 1 0
mrt 0 0K 0K 166960K 11 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 67 307K 307K 166960K 67 0
exec 0 0K 1K 166960K 381 0
fusefs mount 1 32K 32K 166960K 1 0
tdb 3 0K 0K 166960K 3 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 54 55K 172K 166960K 4123 0
UVM aobj 11 2K 2K 166960K 12 0
pinsyscall 9 18K 94K 166960K 1384 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 0K 166960K 3 0
NDP 8 0K 2K 166960K 30 0
temp 24 9109K 13206K 166960K 8905 0
kqueue 1 2K 28K 166960K 42 0
SYN cache 2 16K 16K 166960K 2 0
ddb> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
rtpcb 120 51 0 51 1 0 1 1 0 8 1
rtentry 136 117 0 40 4 0 4 4 0 8 0
unpcb 144 118 0 118 1 0 1 1 0 8 1
syncache 336 6 0 6 1 0 1 1 0 8 1
tcpcb 736 145 0 144 6 0 6 6 0 8 5
arp 96 19 0 7 1 0 1 1 0 8 0
ipq 40 1 0 0 1 0 1 1 0 8 0
ipqe 40 1 0 0 1 0 1 1 0 8 0
inpcb 328 319 0 318 12 2 10 12 0 8 9
ip6q 72 3 0 1 1 0 1 1 0 8 0
ip6af 40 5 0 3 1 0 1 1 0 8 0
nd6 112 25 0 10 1 0 1 1 0 8 0
kcovpl 48 8 0 3 1 0 1 1 0 8 0
ppxss 1072 2 0 2 1 0 1 1 0 8 1
pppxif 1416 1 0 1 1 0 1 1 0 8 1
pfstscr 40 3 0 3 1 0 1 1 0 8 1
pfrktable 1344 5 0 5 1 0 1 1 0 8 1
pfsrclim 320 1 0 1 1 0 1 1 0 8 1
pfanchor 1288 4 0 1 1 0 1 1 0 8 0
pftag 88 3 0 2 1 0 1 1 0 8 0
pfqueue 320 1 0 0 1 0 1 1 0 8 0
pfstkey 128 4 0 4 1 0 1 1 0 8 1
pfstate 384 2 0 2 1 0 1 1 0 8 1
pfrule 1360 2 0 2 1 0 1 1 0 8 1
rttmr 136 1 0 1 1 0 1 1 0 8 1
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 475 0 153 30 0 30 30 0 8 6
art_table 40 476 0 153 5 0 5 5 0 8 0
art_node 32 117 0 47 1 0 1 1 0 8 0
semapl 72 5 0 0 1 0 1 1 0 8 0
shmpl 112 9 0 1 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 1859 0 402 92 0 92 92 0 8 0
ffsino 256 1863 0 406 92 0 92 92 0 8 0
nchpl 144 2265 0 572 64 0 64 64 0 8 0
vnodes 216 2034 0 0 113 0 113 113 0 8 0
namei 1024 6924 0 6924 2 0 2 2 0 8 2
pfiaddrpl 120 1 0 1 1 0 1 1 0 8 1
kstatmem 264 29 0 12 2 0 2 2 0 8 0
scxspl 216 8662 0 8662 4 0 4 4 1 8 4
plimitpl 152 106 0 96 1 0 1 1 0 8 0
sigapl 424 591 0 545 8 0 8 8 0 8 0
knotepl 120 7068 0 7051 8 0 8 8 0 8 6
kqueuepl 184 53 0 52 1 0 1 1 0 8 0
pipepl 304 139 0 112 3 0 3 3 0 8 0
fdescpl 448 557 0 548 5 0 5 5 0 8 1
filepl 120 2635 0 2528 10 0 10 10 0 8 3
lockfpl 104 41 0 41 1 0 1 1 0 8 1
lockfspl 48 18 0 18 1 0 1 1 0 8 1
sessionpl 144 28 0 25 1 0 1 1 0 8 0
pgrppl 48 40 0 29 1 0 1 1 0 8 0
ucredpl 104 402 0 399 1 0 1 1 0 8 0
zombiepl 144 553 0 545 1 0 1 1 0 8 0
processpl 1152 591 0 545 5 0 5 5 0 8 0
procpl 664 808 0 762 7 0 7 7 0 8 1
sockpl 552 497 0 496 11 2 9 11 0 8 8
mcl64k 65536 44 0 43 1 0 1 1 0 8 0
mcl16k 16384 2 0 2 1 0 1 1 0 8 1
mcl8k 8192 9 0 8 1 0 1 1 0 8 0
mcl4k 4096 2682 0 2615 13 0 13 13 0 8 4
mcl2k 2048 202 0 202 2 0 2 2 0 8 2
mextrefs 64 105 0 105 1 0 1 1 0 8 1
mtagpl 96 5 0 5 1 0 1 1 0 8 1
mbufpl 256 5641 0 5567 17 0 17 17 0 8 7
bufpl 272 3261 0 103 211 0 211 211 0 8 0
anonpl 24 97354 0 96516 37 0 37 37 0 187 16
amapchunkpl 152 12191 0 12076 25 0 25 25 0 158 12
amappl16 200 1594 0 1582 15 3 12 15 0 8 8
amappl15 192 4 0 4 1 0 1 1 0 8 1
amappl14 184 410 0 410 1 0 1 1 0 8 1
amappl13 176 137 0 136 1 0 1 1 0 8 0
amappl12 168 838 0 830 2 0 2 2 0 8 0
amappl11 160 2 0 2 1 0 1 1 0 8 1
amappl10 152 59 0 59 1 0 1 1 0 8 1
amappl9 144 286 0 286 1 0 1 1 0 8 1
amappl8 136 93 0 93 1 0 1 1 0 8 1
amappl7 128 137 0 135 1 0 1 1 0 8 0
amappl6 120 145 0 145 1 0 1 1 0 8 1
amappl5 112 107 0 105 1 0 1 1 0 8 0
amappl4 104 287 0 284 1 0 1 1 0 8 0
amappl3 96 2322 0 2298 3 0 3 3 0 8 0
amappl2 88 523 0 512 2 0 2 2 0 8 0
amappl1 80 10698 0 10627 13 0 13 13 0 8 6
amappl 88 3411 0 3368 4 0 4 4 0 92 0
uvmvnodes 80 103 0 0 3 0 3 3 0 8 0
dma4096 4096 1 0 1 1 0 1 1 0 8 1
dma1024 1024 1 0 0 1 0 1 1 0 8 0
dma256 256 6 0 6 1 0 1 1 0 8 1
dma128 128 253 0 253 1 0 1 1 0 8 1
dma64 64 6 0 6 1 0 1 1 0 8 1
dma32 32 7 0 7 1 0 1 1 0 8 1
dma16 16 18 0 17 1 0 1 1 0 8 0
aobjpl 72 11 0 1 1 0 1 1 0 8 0
uaddrrnd 24 557 0 548 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 557 0 548 1 0 1 1 0 8 0
vmmpekpl 168 6540 0 6503 2 0 2 2 0 8 0
vmmpepl 168 44097 0 43753 80 0 80 80 0 357 42
vmsppl 368 556 0 548 4 0 4 4 0 8 1
rwobjpl 40 15355 0 15058 11 0 11 11 0 8 1
pdppl 4096 1120 0 1096 94 48 46 80 0 8 22
pvpl 32 254010 0 252112 74 0 74 74 0 265 27
pmappl 216 556 0 548 3 0 3 3 0 8 0
extentpl 40 46 0 28 1 0 1 1 0 8 0
phpool 112 580 0 48 16 0 16 16 0 8 0
ddb> machine ddbcpu 0
No such command
ddb> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff834bf744) at panic+0x1cf sys/kern/subr_prf.c:198
free(ffff800000c57b20,5,64) at free+0x690 sys/kern/kern_malloc.c:387
rtfree(fffff5006d9113c0) at rtfree+0x34e sys/net/route.c:646
rt_ifa_del(ffff800001607a00,800100,ffff800001607a68,0) at rt_ifa_del+0x44b sys/net/route.c:-1
in_purgeaddr(ffff800001607a00) at in_purgeaddr+0x129 in_remove_prefix sys/netinet/in.c:810 [inline]
in_purgeaddr(ffff800001607a00) at in_purgeaddr+0x129 in_ifscrub sys/netinet/in.c:636 [inline]
in_purgeaddr(ffff800001607a00) at in_purgeaddr+0x129 sys/netinet/in.c:751
in_ifdetach(ffff8000015c1000) at in_ifdetach+0x7e sys/netinet/in.c:1015
if_detach(ffff8000015c1000) at if_detach+0x322 sys/net/if.c:1311
tun_clone_destroy(ffff8000015c1000) at tun_clone_destroy+0x2a2 sys/net/if_tun.c:343
if_clone_destroy(ffff80002a885620) at if_clone_destroy+0x1d5 sys/net/if.c:1479
tun_dev_close(5d06,7) at tun_dev_close+0x1d9 sys/net/if_tun.c:526
spec_close(ffff80002a8856e0) at spec_close+0x417 sys/kern/spec_vnops.c:-1
VOP_CLOSE(fffff50071b8d538,7,fffff50007ffd7b8,ffff80002a736538) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156
vn_closefile(fffff5006d31ecb8,ffff80002a736538) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:298 [inline]
vn_closefile(fffff5006d31ecb8,ffff80002a736538) at vn_closefile+0x11d sys/kern/vfs_vnops.c:621
fdrop(fffff5006d31ecb8,ffff80002a736538) at fdrop+0x121 sys/kern/kern_descrip.c:1281
closef(fffff5006d31ecb8,ffff80002a736538) at closef+0x190 sys/kern/kern_descrip.c:1265
fdfree(ffff80002a736538) at fdfree+0x115 sys/kern/kern_descrip.c:1196
exit1(ffff80002a736538,1,0,1) at exit1+0x595 sys/kern/kern_exit.c:215
sys_exit(ffff80002a736538,ffff80002a885a40,ffff80002a885990) at sys_exit+0x1a sys/kern/kern_exit.c:-1
syscall(ffff80002a885a40) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80002a885a40) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x734cf66e0110, count: -21
ddb> machine ddbcpu 1
No such command
ddb> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff834bf744) at panic+0x1cf sys/kern/subr_prf.c:198
free(ffff800000c57b20,5,64) at free+0x690 sys/kern/kern_malloc.c:387
rtfree(fffff5006d9113c0) at rtfree+0x34e sys/net/route.c:646
rt_ifa_del(ffff800001607a00,800100,ffff800001607a68,0) at rt_ifa_del+0x44b sys/net/route.c:-1
in_purgeaddr(ffff800001607a00) at in_purgeaddr+0x129 in_remove_prefix sys/netinet/in.c:810 [inline]
in_purgeaddr(ffff800001607a00) at in_purgeaddr+0x129 in_ifscrub sys/netinet/in.c:636 [inline]
in_purgeaddr(ffff800001607a00) at in_purgeaddr+0x129 sys/netinet/in.c:751
in_ifdetach(ffff8000015c1000) at in_ifdetach+0x7e sys/netinet/in.c:1015
if_detach(ffff8000015c1000) at if_detach+0x322 sys/net/if.c:1311
tun_clone_destroy(ffff8000015c1000) at tun_clone_destroy+0x2a2 sys/net/if_tun.c:343
if_clone_destroy(ffff80002a885620) at if_clone_destroy+0x1d5 sys/net/if.c:1479
tun_dev_close(5d06,7) at tun_dev_close+0x1d9 sys/net/if_tun.c:526
spec_close(ffff80002a8856e0) at spec_close+0x417 sys/kern/spec_vnops.c:-1
VOP_CLOSE(fffff50071b8d538,7,fffff50007ffd7b8,ffff80002a736538) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156
vn_closefile(fffff5006d31ecb8,ffff80002a736538) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:298 [inline]
vn_closefile(fffff5006d31ecb8,ffff80002a736538) at vn_closefile+0x11d sys/kern/vfs_vnops.c:621
fdrop(fffff5006d31ecb8,ffff80002a736538) at fdrop+0x121 sys/kern/kern_descrip.c:1281
closef(fffff5006d31ecb8,ffff80002a736538) at closef+0x190 sys/kern/kern_descrip.c:1265
fdfree(ffff80002a736538) at fdfree+0x115 sys/kern/kern_descrip.c:1196
exit1(ffff80002a736538,1,0,1) at exit1+0x595 sys/kern/kern_exit.c:215
sys_exit(ffff80002a736538,ffff80002a885a40,ffff80002a885990) at sys_exit+0x1a sys/kern/kern_exit.c:-1
syscall(ffff80002a885a40) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80002a885a40) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x734cf66e0110, count: -21
ddb>
---
This report 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 issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
If the report is already addressed, let syzbot know by replying with:
#syz fix: exact-commit-title
If you want to overwrite report's subsystems, reply with:
#syz set subsystems: new-subsystem
(See the list of subsystem names on the web dashboard)
If the report is a duplicate of another one, reply with:
#syz dup: exact-subject-of-another-report
If you want to undo deduplication, reply with:
#syz undup
Reply all
Reply to author
Forward
0 new messages