assert "sc->sc_dev == NUM" failed in if_tun.c (4)
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syzbot
Oct 9, 2023, 4:15:57 AM10/9/23
to syzkaller-o...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 142580dd4dc7 drm/amdkfd: Flush TLB after unmapping for GFX..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=1007dc2e680000
kernel config: https://syzkaller.appspot.com/x/.config?x=1bc15e68cd2a49e5
dashboard link: https://syzkaller.appspot.com/bug?extid=3f950af8adf0e949dbd7
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/5af9875b4afd/disk-142580dd.raw.xz
bsd.gdb: https://storage.googleapis.com/syzbot-assets/47c5fcd0bdf7/bsd-142580dd.gdb.xz
kernel image: https://storage.googleapis.com/syzbot-assets/a0c941db50c9/kernel-142580dd.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+3f950a...@syzkaller.appspotmail.com
panic: kernel diagnostic assertion "sc->sc_dev == 0" failed: file "/syzkaller/managers/main/kernel/sys/net/if_tun.c", line 315
Stopped at db_enter+0x1c: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff82780000) at panic+0x165 sys/kern/subr_prf.c:198
__assert(ffffffff827fd334,ffffffff8283409e,13b,ffffffff82814215) at __assert+0x29 sys/kern/subr_prf.c:157
tun_clone_destroy(ffff800000d5d800) at tun_clone_destroy+0x234 sys/net/if_tun.c:315
if_clone_destroy(ffff80002b2745c0) at if_clone_destroy+0x132 sys/net/if.c:1384
tun_dev_close(44002802,81) at tun_dev_close+0x141 sys/net/if_tun.c:521
spec_close(ffff80002b2746a0) at spec_close+0x2c7 sys/kern/spec_vnops.c:541
VOP_CLOSE(fffffd806777d948,81,fffffd807f7d78f0,ffff8000216d4800) at VOP_CLOSE+0xe2 sys/kern/vfs_vops.c:156
vn_closefile(fffffd806b80f3d8,ffff8000216d4800) at vn_closefile+0xd6 vn_close sys/kern/vfs_vnops.c:292 [inline]
vn_closefile(fffffd806b80f3d8,ffff8000216d4800) at vn_closefile+0xd6 sys/kern/vfs_vnops.c:609
fdrop(fffffd806b80f3d8,ffff8000216d4800) at fdrop+0xcb sys/kern/kern_descrip.c:1274
closef(fffffd806b80f3d8,ffff8000216d4800) at closef+0x11b sys/kern/kern_descrip.c:1258
fdfree(ffff8000216d4800) at fdfree+0xf3 sys/kern/kern_descrip.c:1190
exit1(ffff8000216d4800,0,0,1) at exit1+0x367 sys/kern/kern_exit.c:199
sys_exit(ffff8000216d4800,ffff80002b274940,ffff80002b274990) at sys_exit+0x1a sys/kern/kern_exit.c:89
end trace frame: 0xffff80002b274a00, 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: kernel diagnostic assertion "sc->sc_dev == 0" failed: file "/syzkaller/managers/main/kernel/sys/net/if_tun.c", line 315
ddb> trace
db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff82780000) at panic+0x165 sys/kern/subr_prf.c:198
__assert(ffffffff827fd334,ffffffff8283409e,13b,ffffffff82814215) at __assert+0x29 sys/kern/subr_prf.c:157
tun_clone_destroy(ffff800000d5d800) at tun_clone_destroy+0x234 sys/net/if_tun.c:315
if_clone_destroy(ffff80002b2745c0) at if_clone_destroy+0x132 sys/net/if.c:1384
tun_dev_close(44002802,81) at tun_dev_close+0x141 sys/net/if_tun.c:521
spec_close(ffff80002b2746a0) at spec_close+0x2c7 sys/kern/spec_vnops.c:541
VOP_CLOSE(fffffd806777d948,81,fffffd807f7d78f0,ffff8000216d4800) at VOP_CLOSE+0xe2 sys/kern/vfs_vops.c:156
vn_closefile(fffffd806b80f3d8,ffff8000216d4800) at vn_closefile+0xd6 vn_close sys/kern/vfs_vnops.c:292 [inline]
vn_closefile(fffffd806b80f3d8,ffff8000216d4800) at vn_closefile+0xd6 sys/kern/vfs_vnops.c:609
fdrop(fffffd806b80f3d8,ffff8000216d4800) at fdrop+0xcb sys/kern/kern_descrip.c:1274
closef(fffffd806b80f3d8,ffff8000216d4800) at closef+0x11b sys/kern/kern_descrip.c:1258
fdfree(ffff8000216d4800) at fdfree+0xf3 sys/kern/kern_descrip.c:1190
exit1(ffff8000216d4800,0,0,1) at exit1+0x367 sys/kern/kern_exit.c:199
sys_exit(ffff8000216d4800,ffff80002b274940,ffff80002b274990) at sys_exit+0x1a sys/kern/kern_exit.c:89
syscall(ffff80002b274a10) at syscall+0x4a8 sys/arch/amd64/amd64/trap.c:623
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7d9809d422b0, count: -16
ddb> show registers
rdi 0
rsi 0x1
rbp 0xffff80002b274450
rbx 0xffffffff8255d290 tunclose
rdx 0
rcx 0
rax 0xffff8000216d4800
r8 0
r9 0x8080808080808080
r10 0xc16601c67d7fa68c
r11 0xd3550ec1d91d6308
r12 0
r13 0
r14 0
r15 0x1
rip 0xffffffff81721bdc db_enter+0x1c
cs 0x8
rflags 0x246
rsp 0xffff80002b274440
ss 0
db_enter+0x1c: addq $0x8,%rsp
ddb> show proc
PROC (syz-executor.2) tid=520197 pid=40775 tcnt=1 stat=onproc
flags process=1008<EXITING,SINGLEEXIT> proc=2000<WEXIT>
runpri=8, usrpri=85, slppri=8, nice=20
wchan=0x0, wmesg=, ps_single=0xffff8000216d4800
forw=0xffffffffffffffff, list=0xffff8000216d6010,0xffff8000216d3d70
process=0xffff80002b27d3c0 user=0xffff80002b26f000, vmspace=0xfffffd8069b30740
estcpu=35, cpticks=5, pctcpu=0.0, user=0, sys=1, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
30060 501827 21779 0 2 0 syz-executor.0
30060 433437 21779 0 2 0x4000000 syz-executor.0
30060 114372 21779 0 3 0x4000000 inode syz-executor.0
30060 452359 21779 0 2 0x4000000 syz-executor.0
30060 148146 21779 0 2 0x4000000 syz-executor.0
30060 22038 21779 0 2 0x4000000 syz-executor.0
62725 112865 22042 0 3 0x80 nanoslp syz-executor.5
62725 177990 22042 0 3 0x4000080 rest syz-executor.5
62725 255146 22042 0 3 0x4000080 fsleep syz-executor.5
92295 430088 14260 0 3 0x80 nanoslp syz-executor.1
92295 131383 14260 0 2 0x4000000 syz-executor.1
92295 461706 14260 0 3 0x4000080 fsleep syz-executor.1
38767 311060 87490 0 2 0x2 syz-executor.3
42244 516290 87490 0 3 0x82 nanoslp syz-executor.2
52545 72001 87490 0 2 0x2 syz-executor.6
21779 307668 87490 0 3 0x82 nanoslp syz-executor.0
4101 101063 87490 0 2 0x2 syz-executor.4
14260 75481 87490 0 3 0x82 nanoslp syz-executor.1
23083 403824 87490 0 2 0x2 syz-executor.7
22042 362551 87490 0 3 0x82 nanoslp syz-executor.5
76434 489935 0 0 3 0x14280 nfsidl nfsio
74017 289976 0 0 3 0x14280 nfsidl nfsio
87107 26608 0 0 3 0x14280 nfsidl nfsio
2353 417290 0 0 3 0x14280 nfsidl nfsio
88822 266975 0 0 3 0x14280 nfsidl nfsio
34747 158354 0 0 3 0x14280 nfsidl nfsio
57598 38177 0 0 3 0x14280 nfsidl nfsio
4485 248816 0 0 3 0x14280 nfsidl nfsio
96941 180710 0 0 3 0x14280 nfsidl nfsio
54730 447106 0 0 3 0x14280 nfsidl nfsio
52835 331422 0 0 3 0x14280 nfsidl nfsio
10872 327053 0 0 3 0x14280 nfsidl nfsio
47308 448788 0 0 3 0x14280 nfsidl nfsio
31737 16886 0 0 3 0x14280 nfsidl nfsio
72612 239157 0 0 3 0x14280 nfsidl nfsio
37452 273433 0 0 3 0x14280 nfsidl nfsio
79586 41940 0 0 3 0x14280 nfsidl nfsio
32164 124153 0 0 3 0x14280 nfsidl nfsio
38554 108734 0 0 3 0x14280 nfsidl nfsio
4495 143376 0 0 3 0x14280 nfsidl nfsio
58056 405088 0 0 3 0x14200 bored sosplice
87490 332322 14168 0 3 0x2000082 wait syz-fuzzer
87490 150479 14168 0 3 0x6000082 thrsleep syz-fuzzer
87490 360982 14168 0 3 0x6000082 wait syz-fuzzer
87490 496444 14168 0 3 0x6000082 wait syz-fuzzer
87490 434033 14168 0 3 0x6000082 thrsleep syz-fuzzer
87490 143161 14168 0 3 0x6000082 thrsleep syz-fuzzer
87490 128945 14168 0 3 0x6000082 wait syz-fuzzer
87490 187029 14168 0 3 0x6000082 wait syz-fuzzer
87490 47421 14168 0 3 0x6000082 thrsleep syz-fuzzer
87490 162970 14168 0 3 0x6000082 kqread syz-fuzzer
87490 147682 14168 0 3 0x6000082 thrsleep syz-fuzzer
87490 474285 14168 0 3 0x6000082 wait syz-fuzzer
87490 481293 14168 0 3 0x6000082 wait syz-fuzzer
87490 186724 14168 0 3 0x6000082 wait syz-fuzzer
14168 467362 67597 0 3 0x10008a sigsusp ksh
67597 494245 83833 0 3 0x9a kqread sshd
81008 78392 1 0 3 0x100083 ttyin getty
83833 252075 1 0 3 0x88 kqread sshd
5865 456038 12659 73 3 0x1100090 kqread syslogd
12659 45280 1 0 3 0x100082 netio syslogd
17968 416768 1 0 3 0x100080 kqread resolvd
60232 289186 67902 77 3 0x100092 kqread dhcpleased
72484 180997 67902 77 3 0x100092 kqread dhcpleased
67902 86061 1 0 3 0x80 kqread dhcpleased
76200 407030 0 0 3 0x14200 bored smr
54596 449406 0 0 2 0x14200 zerothread
79203 227296 0 0 3 0x14200 aiodoned aiodoned
10553 522055 0 0 3 0x14200 syncer update
83105 97360 0 0 3 0x14200 cleaner cleaner
15136 489168 0 0 3 0x14200 reaper reaper
85536 396288 0 0 3 0x14200 pgdaemon pagedaemon
85220 510704 0 0 3 0x14200 bored viomb
44963 323512 0 0 3 0x40014200 acpi0 acpi0
60254 152964 0 0 3 0x14200 bored softnet3
26014 319814 0 0 3 0x14200 bored softnet2
4710 291175 0 0 3 0x14200 bored softnet1
94809 80373 0 0 3 0x14200 bored softnet0
1607 335938 0 0 3 0x14200 bored systqmp
70276 359693 0 0 3 0x14200 bored systq
99396 229264 0 0 3 0x40014200 bored softclock
30605 319930 0 0 3 0x40014200 idle0
1 442553 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 10194 6545K 7706K 78643K 19017 0
pcb 13 10K 12K 78643K 260 0
rtable 237 7K 7K 78643K 775 0
pf 32 9K 9K 78643K 143 0
ifaddr 44 11K 12K 78643K 138 0
ifgroup 55 2K 2K 78643K 224 0
sysctl 3 0K 0K 78643K 3 0
counters 29 17K 17K 78643K 78 0
ioctlops 0 0K 2K 78643K 96 0
iov 0 0K 14K 78643K 279 0
mount 1 1K 1K 78643K 1 0
log 0 0K 0K 78643K 4 0
vnodes 1417 89K 89K 78643K 3065 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 5K 78643K 8 0
VM map 2 1K 1K 78643K 2 0
sem 12 0K 1K 78643K 82 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1697 195K 286K 78643K 12548 0
file desc 14 49K 77K 78643K 1576 0
sigio 0 0K 0K 78643K 7 0
proc 56 58K 83K 78643K 893 0
subproc 104 6K 6K 78643K 282 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 50 0
in_multi 99 7K 7K 78643K 271 0
ether_multi 1 0K 0K 78643K 11 0
mrt 1 0K 0K 78643K 4 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 109 493K 493K 78643K 109 0
exec 0 0K 1K 78643K 616 0
tdb 3 0K 0K 78643K 3 0
pagedep 1 8K 8K 78643K 1 0
inodedep 1 32K 32K 78643K 1 0
newblk 1 0K 0K 78643K 1 0
VM swap 8 62K 64K 78643K 10 0
UVM amap 322 82K 85K 78643K 15913 0
UVM aobj 15 2K 2K 78643K 15 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 41 0
NDP 12 0K 2K 78643K 103 0
temp 74 5912K 6040K 78643K 19217 0
kqueue 12 18K 30K 78643K 148 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
rtpcb 120 93 0 90 1 0 1 1 0 8 0
rtentry 112 258 0 148 4 0 4 4 0 8 0
unpcb 144 1048 0 1035 12 11 1 6 0 8 0
syncache 304 20 0 20 4 4 0 1 0 8 0
sackhl 24 1 0 1 1 1 0 1 0 8 0
tcpqe 32 127 0 127 5 5 0 1 0 8 0
tcpcb 808 513 0 501 22 14 8 9 0 8 5
arp 88 44 0 26 1 0 1 1 0 8 0
inpcb 336 1075 0 1060 25 18 7 8 0 8 4
nd6 104 67 0 43 1 0 1 1 0 8 0
kcovpl 48 21 0 13 1 0 1 1 0 8 0
ppxss 1160 20 0 20 4 4 0 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 1050 0 595 40 11 29 29 0 8 0
art_table 32 1051 0 595 5 1 4 4 0 8 0
art_node 16 257 0 157 1 0 1 1 0 8 0
sysvmsgpl 40 4 0 1 1 0 1 1 0 8 0
semupl 112 5 0 5 1 1 0 1 0 8 0
semapl 112 76 0 66 1 0 1 1 0 8 0
shmpl 112 12 0 0 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 3191 0 1742 91 0 91 91 0 8 0
ffsino 240 3192 0 1742 86 0 86 86 0 8 0
nchpl 144 5333 0 4851 63 41 22 63 0 8 0
uvmvnodes 80 4957 0 0 102 0 102 102 0 8 0
vnodes 216 4957 0 0 276 0 276 276 0 8 0
namei 1024 20942 0 20937 10 9 1 3 0 8 0
kstatmem 264 122 0 98 2 0 2 2 0 8 0
scxspl 216 28507 0 28507 14 13 1 8 1 8 1
plimitpl 152 286 0 271 1 0 1 1 0 8 0
sigapl 424 1857 0 1795 10 2 8 8 0 8 0
futexpl 64 13680 0 13678 5 4 1 1 0 8 0
knotepl 120 31277 0 31197 11 7 4 10 0 8 1
kqueuepl 184 177 0 169 1 0 1 1 0 8 0
pipepl 288 664 0 636 26 19 7 11 0 8 5
fdescpl 432 1820 0 1795 5 1 4 4 0 8 0
filepl 120 11189 0 10949 32 20 12 15 0 8 4
lockfpl 104 1202 0 1199 2 1 1 2 0 8 0
lockfspl 48 501 0 498 1 0 1 1 0 8 0
sessionpl 144 36 0 20 1 0 1 1 0 8 0
pgrppl 48 43 0 27 1 0 1 1 0 8 0
ucredpl 104 981 0 971 1 0 1 1 0 8 0
zombiepl 144 1796 0 1795 2 1 1 1 0 8 0
processpl 1008 1857 0 1795 12 3 9 9 0 8 0
procpl 680 3892 0 3808 14 6 8 9 0 8 0
sosppl 168 24 0 24 3 3 0 1 0 8 0
sockpl 456 2219 0 2188 75 62 13 20 0 8 7
mcl64k 65536 80 0 80 6 5 1 1 0 8 1
mcl16k 16384 50 0 50 7 7 0 1 0 8 0
mcl12k 12288 65 0 65 6 5 1 1 0 8 1
mcl9k 9216 20 0 20 6 6 0 1 0 8 0
mcl8k 8192 152 0 152 7 6 1 1 0 8 1
mcl4k 4096 180 0 180 5 4 1 1 0 8 1
mcl2k2 2112 12 0 12 6 6 0 1 0 8 0
mcl2k 2048 67397 0 67350 35 22 13 26 0 8 6
mtagpl 96 361 0 355 9 4 5 8 0 8 4
mbufpl 256 121491 0 121318 88 65 23 69 0 8 7
bufpl 288 7837 0 1438 458 0 458 458 0 8 0
anonpl 24 339755 0 327790 128 31 97 108 0 188 7
amapchunkpl 152 51972 0 51151 61 23 38 47 0 158 3
amappl16 200 7667 0 7290 36 15 21 33 0 8 0
amappl15 192 16 0 16 2 2 0 1 0 8 0
amappl14 184 198 0 185 2 0 2 2 0 8 0
amappl13 176 15 0 15 2 2 0 1 0 8 0
amappl12 168 2665 0 2638 2 0 2 2 0 8 0
amappl11 160 52 0 39 1 0 1 1 0 8 0
amappl10 152 46 0 35 1 0 1 1 0 8 0
amappl9 144 155 0 155 6 6 0 1 0 8 0
amappl8 136 222 0 162 3 0 3 3 0 8 0
amappl7 128 65 0 52 1 0 1 1 0 8 0
amappl6 120 308 0 291 2 1 1 2 0 8 0
amappl5 112 240 0 230 1 0 1 1 0 8 0
amappl4 104 628 0 593 2 0 2 2 0 8 0
amappl3 96 10780 0 10705 5 2 3 3 0 8 0
amappl2 88 2047 0 1988 3 1 2 3 0 8 0
amappl1 80 15792 0 15287 23 12 11 22 0 8 0
amappl 88 15296 0 15084 6 0 6 6 0 92 0
dma4096 4096 1 0 1 1 1 0 1 0 8 0
dma1024 1024 1 0 0 1 0 1 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 72 14 0 0 1 0 1 1 0 8 0
uaddrrnd 24 1820 0 1795 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 1820 0 1795 1 0 1 1 0 8 0
vmmpekpl 168 19609 0 19557 3 0 3 3 0 8 0
vmmpepl 168 134766 0 132696 182 71 111 128 0 357 8
vmsppl 368 1819 0 1795 3 0 3 3 0 8 0
rwobjpl 24 43108 0 36752 41 2 39 39 0 8 0
pdppl 4096 3647 0 3590 183 118 65 71 0 8 8
pvpl 32 1134706 0 1117109 448 241 207 331 0 265 37
pmappl 216 1819 0 1795 2 0 2 2 0 8 0
extentpl 40 56 0 38 1 0 1 1 0 8 0
phpool 112 1113 0 306 24 0 24 24 0 8 0
ddb> machine ddbcpu 0
No such command
ddb> trace
db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff82780000) at panic+0x165 sys/kern/subr_prf.c:198
__assert(ffffffff827fd334,ffffffff8283409e,13b,ffffffff82814215) at __assert+0x29 sys/kern/subr_prf.c:157
tun_clone_destroy(ffff800000d5d800) at tun_clone_destroy+0x234 sys/net/if_tun.c:315
if_clone_destroy(ffff80002b2745c0) at if_clone_destroy+0x132 sys/net/if.c:1384
tun_dev_close(44002802,81) at tun_dev_close+0x141 sys/net/if_tun.c:521
spec_close(ffff80002b2746a0) at spec_close+0x2c7 sys/kern/spec_vnops.c:541
VOP_CLOSE(fffffd806777d948,81,fffffd807f7d78f0,ffff8000216d4800) at VOP_CLOSE+0xe2 sys/kern/vfs_vops.c:156
vn_closefile(fffffd806b80f3d8,ffff8000216d4800) at vn_closefile+0xd6 vn_close sys/kern/vfs_vnops.c:292 [inline]
vn_closefile(fffffd806b80f3d8,ffff8000216d4800) at vn_closefile+0xd6 sys/kern/vfs_vnops.c:609
fdrop(fffffd806b80f3d8,ffff8000216d4800) at fdrop+0xcb sys/kern/kern_descrip.c:1274
closef(fffffd806b80f3d8,ffff8000216d4800) at closef+0x11b sys/kern/kern_descrip.c:1258
fdfree(ffff8000216d4800) at fdfree+0xf3 sys/kern/kern_descrip.c:1190
exit1(ffff8000216d4800,0,0,1) at exit1+0x367 sys/kern/kern_exit.c:199
sys_exit(ffff8000216d4800,ffff80002b274940,ffff80002b274990) at sys_exit+0x1a sys/kern/kern_exit.c:89
syscall(ffff80002b274a10) at syscall+0x4a8 sys/arch/amd64/amd64/trap.c:623
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7d9809d422b0, count: -16
ddb> machine ddbcpu 1
No such command
ddb> trace
db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff82780000) at panic+0x165 sys/kern/subr_prf.c:198
__assert(ffffffff827fd334,ffffffff8283409e,13b,ffffffff82814215) at __assert+0x29 sys/kern/subr_prf.c:157
tun_clone_destroy(ffff800000d5d800) at tun_clone_destroy+0x234 sys/net/if_tun.c:315
if_clone_destroy(ffff80002b2745c0) at if_clone_destroy+0x132 sys/net/if.c:1384
tun_dev_close(44002802,81) at tun_dev_close+0x141 sys/net/if_tun.c:521
spec_close(ffff80002b2746a0) at spec_close+0x2c7 sys/kern/spec_vnops.c:541
VOP_CLOSE(fffffd806777d948,81,fffffd807f7d78f0,ffff8000216d4800) at VOP_CLOSE+0xe2 sys/kern/vfs_vops.c:156
vn_closefile(fffffd806b80f3d8,ffff8000216d4800) at vn_closefile+0xd6 vn_close sys/kern/vfs_vnops.c:292 [inline]
vn_closefile(fffffd806b80f3d8,ffff8000216d4800) at vn_closefile+0xd6 sys/kern/vfs_vnops.c:609
fdrop(fffffd806b80f3d8,ffff8000216d4800) at fdrop+0xcb sys/kern/kern_descrip.c:1274
closef(fffffd806b80f3d8,ffff8000216d4800) at closef+0x11b sys/kern/kern_descrip.c:1258
fdfree(ffff8000216d4800) at fdfree+0xf3 sys/kern/kern_descrip.c:1190
exit1(ffff8000216d4800,0,0,1) at exit1+0x367 sys/kern/kern_exit.c:199
sys_exit(ffff8000216d4800,ffff80002b274940,ffff80002b274990) at sys_exit+0x1a sys/kern/kern_exit.c:89
syscall(ffff80002b274a10) at syscall+0x4a8 sys/arch/amd64/amd64/trap.c:623
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7d9809d422b0, count: -16
---
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#syz set subsystems: new-subsystem
(See the list of subsystem names on the web dashboard)
If the bug is a duplicate of another bug, 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: 142580dd4dc7 drm/amdkfd: Flush TLB after unmapping for GFX..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=1007dc2e680000
kernel config: https://syzkaller.appspot.com/x/.config?x=1bc15e68cd2a49e5
dashboard link: https://syzkaller.appspot.com/bug?extid=3f950af8adf0e949dbd7
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/5af9875b4afd/disk-142580dd.raw.xz
bsd.gdb: https://storage.googleapis.com/syzbot-assets/47c5fcd0bdf7/bsd-142580dd.gdb.xz
kernel image: https://storage.googleapis.com/syzbot-assets/a0c941db50c9/kernel-142580dd.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+3f950a...@syzkaller.appspotmail.com
panic: kernel diagnostic assertion "sc->sc_dev == 0" failed: file "/syzkaller/managers/main/kernel/sys/net/if_tun.c", line 315
Stopped at db_enter+0x1c: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff82780000) at panic+0x165 sys/kern/subr_prf.c:198
__assert(ffffffff827fd334,ffffffff8283409e,13b,ffffffff82814215) at __assert+0x29 sys/kern/subr_prf.c:157
tun_clone_destroy(ffff800000d5d800) at tun_clone_destroy+0x234 sys/net/if_tun.c:315
if_clone_destroy(ffff80002b2745c0) at if_clone_destroy+0x132 sys/net/if.c:1384
tun_dev_close(44002802,81) at tun_dev_close+0x141 sys/net/if_tun.c:521
spec_close(ffff80002b2746a0) at spec_close+0x2c7 sys/kern/spec_vnops.c:541
VOP_CLOSE(fffffd806777d948,81,fffffd807f7d78f0,ffff8000216d4800) at VOP_CLOSE+0xe2 sys/kern/vfs_vops.c:156
vn_closefile(fffffd806b80f3d8,ffff8000216d4800) at vn_closefile+0xd6 vn_close sys/kern/vfs_vnops.c:292 [inline]
vn_closefile(fffffd806b80f3d8,ffff8000216d4800) at vn_closefile+0xd6 sys/kern/vfs_vnops.c:609
fdrop(fffffd806b80f3d8,ffff8000216d4800) at fdrop+0xcb sys/kern/kern_descrip.c:1274
closef(fffffd806b80f3d8,ffff8000216d4800) at closef+0x11b sys/kern/kern_descrip.c:1258
fdfree(ffff8000216d4800) at fdfree+0xf3 sys/kern/kern_descrip.c:1190
exit1(ffff8000216d4800,0,0,1) at exit1+0x367 sys/kern/kern_exit.c:199
sys_exit(ffff8000216d4800,ffff80002b274940,ffff80002b274990) at sys_exit+0x1a sys/kern/kern_exit.c:89
end trace frame: 0xffff80002b274a00, 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: kernel diagnostic assertion "sc->sc_dev == 0" failed: file "/syzkaller/managers/main/kernel/sys/net/if_tun.c", line 315
ddb> trace
db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff82780000) at panic+0x165 sys/kern/subr_prf.c:198
__assert(ffffffff827fd334,ffffffff8283409e,13b,ffffffff82814215) at __assert+0x29 sys/kern/subr_prf.c:157
tun_clone_destroy(ffff800000d5d800) at tun_clone_destroy+0x234 sys/net/if_tun.c:315
if_clone_destroy(ffff80002b2745c0) at if_clone_destroy+0x132 sys/net/if.c:1384
tun_dev_close(44002802,81) at tun_dev_close+0x141 sys/net/if_tun.c:521
spec_close(ffff80002b2746a0) at spec_close+0x2c7 sys/kern/spec_vnops.c:541
VOP_CLOSE(fffffd806777d948,81,fffffd807f7d78f0,ffff8000216d4800) at VOP_CLOSE+0xe2 sys/kern/vfs_vops.c:156
vn_closefile(fffffd806b80f3d8,ffff8000216d4800) at vn_closefile+0xd6 vn_close sys/kern/vfs_vnops.c:292 [inline]
vn_closefile(fffffd806b80f3d8,ffff8000216d4800) at vn_closefile+0xd6 sys/kern/vfs_vnops.c:609
fdrop(fffffd806b80f3d8,ffff8000216d4800) at fdrop+0xcb sys/kern/kern_descrip.c:1274
closef(fffffd806b80f3d8,ffff8000216d4800) at closef+0x11b sys/kern/kern_descrip.c:1258
fdfree(ffff8000216d4800) at fdfree+0xf3 sys/kern/kern_descrip.c:1190
exit1(ffff8000216d4800,0,0,1) at exit1+0x367 sys/kern/kern_exit.c:199
sys_exit(ffff8000216d4800,ffff80002b274940,ffff80002b274990) at sys_exit+0x1a sys/kern/kern_exit.c:89
syscall(ffff80002b274a10) at syscall+0x4a8 sys/arch/amd64/amd64/trap.c:623
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7d9809d422b0, count: -16
ddb> show registers
rdi 0
rsi 0x1
rbp 0xffff80002b274450
rbx 0xffffffff8255d290 tunclose
rdx 0
rcx 0
rax 0xffff8000216d4800
r8 0
r9 0x8080808080808080
r10 0xc16601c67d7fa68c
r11 0xd3550ec1d91d6308
r12 0
r13 0
r14 0
r15 0x1
rip 0xffffffff81721bdc db_enter+0x1c
cs 0x8
rflags 0x246
rsp 0xffff80002b274440
ss 0
db_enter+0x1c: addq $0x8,%rsp
ddb> show proc
PROC (syz-executor.2) tid=520197 pid=40775 tcnt=1 stat=onproc
flags process=1008<EXITING,SINGLEEXIT> proc=2000<WEXIT>
runpri=8, usrpri=85, slppri=8, nice=20
wchan=0x0, wmesg=, ps_single=0xffff8000216d4800
forw=0xffffffffffffffff, list=0xffff8000216d6010,0xffff8000216d3d70
process=0xffff80002b27d3c0 user=0xffff80002b26f000, vmspace=0xfffffd8069b30740
estcpu=35, cpticks=5, pctcpu=0.0, user=0, sys=1, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
30060 501827 21779 0 2 0 syz-executor.0
30060 433437 21779 0 2 0x4000000 syz-executor.0
30060 114372 21779 0 3 0x4000000 inode syz-executor.0
30060 452359 21779 0 2 0x4000000 syz-executor.0
30060 148146 21779 0 2 0x4000000 syz-executor.0
30060 22038 21779 0 2 0x4000000 syz-executor.0
62725 112865 22042 0 3 0x80 nanoslp syz-executor.5
62725 177990 22042 0 3 0x4000080 rest syz-executor.5
62725 255146 22042 0 3 0x4000080 fsleep syz-executor.5
92295 430088 14260 0 3 0x80 nanoslp syz-executor.1
92295 131383 14260 0 2 0x4000000 syz-executor.1
92295 461706 14260 0 3 0x4000080 fsleep syz-executor.1
38767 311060 87490 0 2 0x2 syz-executor.3
42244 516290 87490 0 3 0x82 nanoslp syz-executor.2
52545 72001 87490 0 2 0x2 syz-executor.6
21779 307668 87490 0 3 0x82 nanoslp syz-executor.0
4101 101063 87490 0 2 0x2 syz-executor.4
14260 75481 87490 0 3 0x82 nanoslp syz-executor.1
23083 403824 87490 0 2 0x2 syz-executor.7
22042 362551 87490 0 3 0x82 nanoslp syz-executor.5
76434 489935 0 0 3 0x14280 nfsidl nfsio
74017 289976 0 0 3 0x14280 nfsidl nfsio
87107 26608 0 0 3 0x14280 nfsidl nfsio
2353 417290 0 0 3 0x14280 nfsidl nfsio
88822 266975 0 0 3 0x14280 nfsidl nfsio
34747 158354 0 0 3 0x14280 nfsidl nfsio
57598 38177 0 0 3 0x14280 nfsidl nfsio
4485 248816 0 0 3 0x14280 nfsidl nfsio
96941 180710 0 0 3 0x14280 nfsidl nfsio
54730 447106 0 0 3 0x14280 nfsidl nfsio
52835 331422 0 0 3 0x14280 nfsidl nfsio
10872 327053 0 0 3 0x14280 nfsidl nfsio
47308 448788 0 0 3 0x14280 nfsidl nfsio
31737 16886 0 0 3 0x14280 nfsidl nfsio
72612 239157 0 0 3 0x14280 nfsidl nfsio
37452 273433 0 0 3 0x14280 nfsidl nfsio
79586 41940 0 0 3 0x14280 nfsidl nfsio
32164 124153 0 0 3 0x14280 nfsidl nfsio
38554 108734 0 0 3 0x14280 nfsidl nfsio
4495 143376 0 0 3 0x14280 nfsidl nfsio
58056 405088 0 0 3 0x14200 bored sosplice
87490 332322 14168 0 3 0x2000082 wait syz-fuzzer
87490 150479 14168 0 3 0x6000082 thrsleep syz-fuzzer
87490 360982 14168 0 3 0x6000082 wait syz-fuzzer
87490 496444 14168 0 3 0x6000082 wait syz-fuzzer
87490 434033 14168 0 3 0x6000082 thrsleep syz-fuzzer
87490 143161 14168 0 3 0x6000082 thrsleep syz-fuzzer
87490 128945 14168 0 3 0x6000082 wait syz-fuzzer
87490 187029 14168 0 3 0x6000082 wait syz-fuzzer
87490 47421 14168 0 3 0x6000082 thrsleep syz-fuzzer
87490 162970 14168 0 3 0x6000082 kqread syz-fuzzer
87490 147682 14168 0 3 0x6000082 thrsleep syz-fuzzer
87490 474285 14168 0 3 0x6000082 wait syz-fuzzer
87490 481293 14168 0 3 0x6000082 wait syz-fuzzer
87490 186724 14168 0 3 0x6000082 wait syz-fuzzer
14168 467362 67597 0 3 0x10008a sigsusp ksh
67597 494245 83833 0 3 0x9a kqread sshd
81008 78392 1 0 3 0x100083 ttyin getty
83833 252075 1 0 3 0x88 kqread sshd
5865 456038 12659 73 3 0x1100090 kqread syslogd
12659 45280 1 0 3 0x100082 netio syslogd
17968 416768 1 0 3 0x100080 kqread resolvd
60232 289186 67902 77 3 0x100092 kqread dhcpleased
72484 180997 67902 77 3 0x100092 kqread dhcpleased
67902 86061 1 0 3 0x80 kqread dhcpleased
76200 407030 0 0 3 0x14200 bored smr
54596 449406 0 0 2 0x14200 zerothread
79203 227296 0 0 3 0x14200 aiodoned aiodoned
10553 522055 0 0 3 0x14200 syncer update
83105 97360 0 0 3 0x14200 cleaner cleaner
15136 489168 0 0 3 0x14200 reaper reaper
85536 396288 0 0 3 0x14200 pgdaemon pagedaemon
85220 510704 0 0 3 0x14200 bored viomb
44963 323512 0 0 3 0x40014200 acpi0 acpi0
60254 152964 0 0 3 0x14200 bored softnet3
26014 319814 0 0 3 0x14200 bored softnet2
4710 291175 0 0 3 0x14200 bored softnet1
94809 80373 0 0 3 0x14200 bored softnet0
1607 335938 0 0 3 0x14200 bored systqmp
70276 359693 0 0 3 0x14200 bored systq
99396 229264 0 0 3 0x40014200 bored softclock
30605 319930 0 0 3 0x40014200 idle0
1 442553 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 10194 6545K 7706K 78643K 19017 0
pcb 13 10K 12K 78643K 260 0
rtable 237 7K 7K 78643K 775 0
pf 32 9K 9K 78643K 143 0
ifaddr 44 11K 12K 78643K 138 0
ifgroup 55 2K 2K 78643K 224 0
sysctl 3 0K 0K 78643K 3 0
counters 29 17K 17K 78643K 78 0
ioctlops 0 0K 2K 78643K 96 0
iov 0 0K 14K 78643K 279 0
mount 1 1K 1K 78643K 1 0
log 0 0K 0K 78643K 4 0
vnodes 1417 89K 89K 78643K 3065 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 5K 78643K 8 0
VM map 2 1K 1K 78643K 2 0
sem 12 0K 1K 78643K 82 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1697 195K 286K 78643K 12548 0
file desc 14 49K 77K 78643K 1576 0
sigio 0 0K 0K 78643K 7 0
proc 56 58K 83K 78643K 893 0
subproc 104 6K 6K 78643K 282 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 50 0
in_multi 99 7K 7K 78643K 271 0
ether_multi 1 0K 0K 78643K 11 0
mrt 1 0K 0K 78643K 4 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 109 493K 493K 78643K 109 0
exec 0 0K 1K 78643K 616 0
tdb 3 0K 0K 78643K 3 0
pagedep 1 8K 8K 78643K 1 0
inodedep 1 32K 32K 78643K 1 0
newblk 1 0K 0K 78643K 1 0
VM swap 8 62K 64K 78643K 10 0
UVM amap 322 82K 85K 78643K 15913 0
UVM aobj 15 2K 2K 78643K 15 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 41 0
NDP 12 0K 2K 78643K 103 0
temp 74 5912K 6040K 78643K 19217 0
kqueue 12 18K 30K 78643K 148 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
rtpcb 120 93 0 90 1 0 1 1 0 8 0
rtentry 112 258 0 148 4 0 4 4 0 8 0
unpcb 144 1048 0 1035 12 11 1 6 0 8 0
syncache 304 20 0 20 4 4 0 1 0 8 0
sackhl 24 1 0 1 1 1 0 1 0 8 0
tcpqe 32 127 0 127 5 5 0 1 0 8 0
tcpcb 808 513 0 501 22 14 8 9 0 8 5
arp 88 44 0 26 1 0 1 1 0 8 0
inpcb 336 1075 0 1060 25 18 7 8 0 8 4
nd6 104 67 0 43 1 0 1 1 0 8 0
kcovpl 48 21 0 13 1 0 1 1 0 8 0
ppxss 1160 20 0 20 4 4 0 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 1050 0 595 40 11 29 29 0 8 0
art_table 32 1051 0 595 5 1 4 4 0 8 0
art_node 16 257 0 157 1 0 1 1 0 8 0
sysvmsgpl 40 4 0 1 1 0 1 1 0 8 0
semupl 112 5 0 5 1 1 0 1 0 8 0
semapl 112 76 0 66 1 0 1 1 0 8 0
shmpl 112 12 0 0 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 3191 0 1742 91 0 91 91 0 8 0
ffsino 240 3192 0 1742 86 0 86 86 0 8 0
nchpl 144 5333 0 4851 63 41 22 63 0 8 0
uvmvnodes 80 4957 0 0 102 0 102 102 0 8 0
vnodes 216 4957 0 0 276 0 276 276 0 8 0
namei 1024 20942 0 20937 10 9 1 3 0 8 0
kstatmem 264 122 0 98 2 0 2 2 0 8 0
scxspl 216 28507 0 28507 14 13 1 8 1 8 1
plimitpl 152 286 0 271 1 0 1 1 0 8 0
sigapl 424 1857 0 1795 10 2 8 8 0 8 0
futexpl 64 13680 0 13678 5 4 1 1 0 8 0
knotepl 120 31277 0 31197 11 7 4 10 0 8 1
kqueuepl 184 177 0 169 1 0 1 1 0 8 0
pipepl 288 664 0 636 26 19 7 11 0 8 5
fdescpl 432 1820 0 1795 5 1 4 4 0 8 0
filepl 120 11189 0 10949 32 20 12 15 0 8 4
lockfpl 104 1202 0 1199 2 1 1 2 0 8 0
lockfspl 48 501 0 498 1 0 1 1 0 8 0
sessionpl 144 36 0 20 1 0 1 1 0 8 0
pgrppl 48 43 0 27 1 0 1 1 0 8 0
ucredpl 104 981 0 971 1 0 1 1 0 8 0
zombiepl 144 1796 0 1795 2 1 1 1 0 8 0
processpl 1008 1857 0 1795 12 3 9 9 0 8 0
procpl 680 3892 0 3808 14 6 8 9 0 8 0
sosppl 168 24 0 24 3 3 0 1 0 8 0
sockpl 456 2219 0 2188 75 62 13 20 0 8 7
mcl64k 65536 80 0 80 6 5 1 1 0 8 1
mcl16k 16384 50 0 50 7 7 0 1 0 8 0
mcl12k 12288 65 0 65 6 5 1 1 0 8 1
mcl9k 9216 20 0 20 6 6 0 1 0 8 0
mcl8k 8192 152 0 152 7 6 1 1 0 8 1
mcl4k 4096 180 0 180 5 4 1 1 0 8 1
mcl2k2 2112 12 0 12 6 6 0 1 0 8 0
mcl2k 2048 67397 0 67350 35 22 13 26 0 8 6
mtagpl 96 361 0 355 9 4 5 8 0 8 4
mbufpl 256 121491 0 121318 88 65 23 69 0 8 7
bufpl 288 7837 0 1438 458 0 458 458 0 8 0
anonpl 24 339755 0 327790 128 31 97 108 0 188 7
amapchunkpl 152 51972 0 51151 61 23 38 47 0 158 3
amappl16 200 7667 0 7290 36 15 21 33 0 8 0
amappl15 192 16 0 16 2 2 0 1 0 8 0
amappl14 184 198 0 185 2 0 2 2 0 8 0
amappl13 176 15 0 15 2 2 0 1 0 8 0
amappl12 168 2665 0 2638 2 0 2 2 0 8 0
amappl11 160 52 0 39 1 0 1 1 0 8 0
amappl10 152 46 0 35 1 0 1 1 0 8 0
amappl9 144 155 0 155 6 6 0 1 0 8 0
amappl8 136 222 0 162 3 0 3 3 0 8 0
amappl7 128 65 0 52 1 0 1 1 0 8 0
amappl6 120 308 0 291 2 1 1 2 0 8 0
amappl5 112 240 0 230 1 0 1 1 0 8 0
amappl4 104 628 0 593 2 0 2 2 0 8 0
amappl3 96 10780 0 10705 5 2 3 3 0 8 0
amappl2 88 2047 0 1988 3 1 2 3 0 8 0
amappl1 80 15792 0 15287 23 12 11 22 0 8 0
amappl 88 15296 0 15084 6 0 6 6 0 92 0
dma4096 4096 1 0 1 1 1 0 1 0 8 0
dma1024 1024 1 0 0 1 0 1 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 72 14 0 0 1 0 1 1 0 8 0
uaddrrnd 24 1820 0 1795 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 1820 0 1795 1 0 1 1 0 8 0
vmmpekpl 168 19609 0 19557 3 0 3 3 0 8 0
vmmpepl 168 134766 0 132696 182 71 111 128 0 357 8
vmsppl 368 1819 0 1795 3 0 3 3 0 8 0
rwobjpl 24 43108 0 36752 41 2 39 39 0 8 0
pdppl 4096 3647 0 3590 183 118 65 71 0 8 8
pvpl 32 1134706 0 1117109 448 241 207 331 0 265 37
pmappl 216 1819 0 1795 2 0 2 2 0 8 0
extentpl 40 56 0 38 1 0 1 1 0 8 0
phpool 112 1113 0 306 24 0 24 24 0 8 0
ddb> machine ddbcpu 0
No such command
ddb> trace
db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff82780000) at panic+0x165 sys/kern/subr_prf.c:198
__assert(ffffffff827fd334,ffffffff8283409e,13b,ffffffff82814215) at __assert+0x29 sys/kern/subr_prf.c:157
tun_clone_destroy(ffff800000d5d800) at tun_clone_destroy+0x234 sys/net/if_tun.c:315
if_clone_destroy(ffff80002b2745c0) at if_clone_destroy+0x132 sys/net/if.c:1384
tun_dev_close(44002802,81) at tun_dev_close+0x141 sys/net/if_tun.c:521
spec_close(ffff80002b2746a0) at spec_close+0x2c7 sys/kern/spec_vnops.c:541
VOP_CLOSE(fffffd806777d948,81,fffffd807f7d78f0,ffff8000216d4800) at VOP_CLOSE+0xe2 sys/kern/vfs_vops.c:156
vn_closefile(fffffd806b80f3d8,ffff8000216d4800) at vn_closefile+0xd6 vn_close sys/kern/vfs_vnops.c:292 [inline]
vn_closefile(fffffd806b80f3d8,ffff8000216d4800) at vn_closefile+0xd6 sys/kern/vfs_vnops.c:609
fdrop(fffffd806b80f3d8,ffff8000216d4800) at fdrop+0xcb sys/kern/kern_descrip.c:1274
closef(fffffd806b80f3d8,ffff8000216d4800) at closef+0x11b sys/kern/kern_descrip.c:1258
fdfree(ffff8000216d4800) at fdfree+0xf3 sys/kern/kern_descrip.c:1190
exit1(ffff8000216d4800,0,0,1) at exit1+0x367 sys/kern/kern_exit.c:199
sys_exit(ffff8000216d4800,ffff80002b274940,ffff80002b274990) at sys_exit+0x1a sys/kern/kern_exit.c:89
syscall(ffff80002b274a10) at syscall+0x4a8 sys/arch/amd64/amd64/trap.c:623
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7d9809d422b0, count: -16
ddb> machine ddbcpu 1
No such command
ddb> trace
db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff82780000) at panic+0x165 sys/kern/subr_prf.c:198
__assert(ffffffff827fd334,ffffffff8283409e,13b,ffffffff82814215) at __assert+0x29 sys/kern/subr_prf.c:157
tun_clone_destroy(ffff800000d5d800) at tun_clone_destroy+0x234 sys/net/if_tun.c:315
if_clone_destroy(ffff80002b2745c0) at if_clone_destroy+0x132 sys/net/if.c:1384
tun_dev_close(44002802,81) at tun_dev_close+0x141 sys/net/if_tun.c:521
spec_close(ffff80002b2746a0) at spec_close+0x2c7 sys/kern/spec_vnops.c:541
VOP_CLOSE(fffffd806777d948,81,fffffd807f7d78f0,ffff8000216d4800) at VOP_CLOSE+0xe2 sys/kern/vfs_vops.c:156
vn_closefile(fffffd806b80f3d8,ffff8000216d4800) at vn_closefile+0xd6 vn_close sys/kern/vfs_vnops.c:292 [inline]
vn_closefile(fffffd806b80f3d8,ffff8000216d4800) at vn_closefile+0xd6 sys/kern/vfs_vnops.c:609
fdrop(fffffd806b80f3d8,ffff8000216d4800) at fdrop+0xcb sys/kern/kern_descrip.c:1274
closef(fffffd806b80f3d8,ffff8000216d4800) at closef+0x11b sys/kern/kern_descrip.c:1258
fdfree(ffff8000216d4800) at fdfree+0xf3 sys/kern/kern_descrip.c:1190
exit1(ffff8000216d4800,0,0,1) at exit1+0x367 sys/kern/kern_exit.c:199
sys_exit(ffff8000216d4800,ffff80002b274940,ffff80002b274990) at sys_exit+0x1a sys/kern/kern_exit.c:89
syscall(ffff80002b274a10) at syscall+0x4a8 sys/arch/amd64/amd64/trap.c:623
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7d9809d422b0, count: -16
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
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syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
If the bug is already fixed, let syzbot know by replying with:
#syz fix: exact-commit-title
If you want to overwrite bug's subsystems, reply with:
#syz set subsystems: new-subsystem
(See the list of subsystem names on the web dashboard)
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syzbot
Jan 9, 2024, 1:17:23 PMJan 9
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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