uvm_fault: in6_purgeaddr
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syzbot
Sep 28, 2019, 2:13:07 AM9/28/19
to syzkaller-o...@googlegroups.com
Hello,
syzbot found the following crash on:
HEAD commit: 81b7b661 fix gary zukav's "acceptance without proof" quote..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=17647f4d600000
kernel config: https://syzkaller.appspot.com/x/.config?x=26ca0a9c07f16a3a
dashboard link: https://syzkaller.appspot.com/bug?extid=11d4213f257f1dfb54f6
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+11d421...@syzkaller.appspotmail.com
uvm_fault(0xfffffd807f00a2e0, 0xff00000010, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at in6_purgeaddr+0x135: movq 0x8(%r12),%r13
ddb{1}>
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
kernel page fault
uvm_fault(0xfffffd807f00a2e0, 0xff00000010, 0, 1) -> e
in6_purgeaddr(ffff800000ad7100) at in6_purgeaddr+0x135
sys/netinet6/in6.c:915
end trace frame: 0xffff80002115ac80, count: 0
ddb{1}> trace
in6_purgeaddr(ffff800000ad7100) at in6_purgeaddr+0x135
sys/netinet6/in6.c:915
in6_ifdetach(ffff800000ad0800) at in6_ifdetach+0x74
sys/netinet6/in6_ifattach.c:422
if_detach(ffff800000ad0800) at if_detach+0x155 sys/net/if.c:1110
tun_clone_destroy(ffff800000ad0800) at tun_clone_destroy+0x1c7
sys/net/if_tun.c:278
spec_close(ffff80002115adb0) at spec_close+0x3b0 sys/kern/spec_vnops.c:553
VOP_CLOSE(fffffd806ec861a8,7,fffffd807f7c64e0,ffff800020ab0290) at
VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:175
vn_closefile(fffffd80667c13a8,ffff800020ab0290) at vn_closefile+0xd8
vn_close sys/kern/vfs_vnops.c:289 [inline]
vn_closefile(fffffd80667c13a8,ffff800020ab0290) at vn_closefile+0xd8
sys/kern/vfs_vnops.c:601
fdrop(fffffd80667c13a8,ffff800020ab0290) at fdrop+0xc2
sys/kern/kern_descrip.c:1273
closef(fffffd80667c13a8,ffff800020ab0290) at closef+0x11d
sys/kern/kern_descrip.c:1257
fdfree(ffff800020ab0290) at fdfree+0x101 sys/kern/kern_descrip.c:1189
exit1(ffff800020ab0290,19,1) at exit1+0x32f sys/kern/kern_exit.c:196
postsig(ffff800020ab0290,19) at postsig+0x4e3 sigexit
sys/kern/kern_sig.c:1499 [inline]
postsig(ffff800020ab0290,19) at postsig+0x4e3 sys/kern/kern_sig.c:1431
userret(ffff800020ab0290) at userret+0x199 sys/kern/kern_sig.c:1887
syscall(ffff80002115b230) at syscall+0x55f mi_syscall_return
sys/sys/syscall_mi.h:115 [inline]
syscall(ffff80002115b230) at syscall+0x55f sys/arch/amd64/amd64/trap.c:577
Xsyscall(6,38,7f7ffffe47a0,3,0,69c8f6e3000) at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffe4790, count: -15
ddb{1}> show registers
rdi 0x1
rsi 0x1
rbp 0xffff80002115ac10
rbx 0
rdx 0xa2
rcx 0
rax 0x3
r8 0x1
r9 0x1
r10 0xc6210df77524988e
r11 0x232a9017ef274187
r12 0xff00000008
r13 0
r14 0xffff800000ad7100
r15 0xffff800000ad0800
rip 0xffffffff81f52ed5 in6_purgeaddr+0x135
cs 0x8
rflags 0x10202 __ALIGN_SIZE+0xf202
rsp 0xffff80002115aba0
ss 0x10
in6_purgeaddr+0x135: movq 0x8(%r12),%r13
ddb{1}> show proc
PROC (syz-executor.1) pid=145573 stat=onproc
flags process=a<EXEC,EXITING> proc=2000<WEXIT>
pri=17, usrpri=81, nice=20
forw=0xffffffffffffffff, list=0xffff800020ab0508,0xffff800020ab0028
process=0xffff800020adc380 user=0xffff800021156000,
vmspace=0xfffffd807f00a2e0
estcpu=31, cpticks=2, pctcpu=0.41
user=0, sys=2, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
89873 287413 10103 0 2 0x2 syz-executor.0
1170 394162 1 0 3 0x100083 ttyin getty
22379 104994 0 0 3 0x14200 acct acct
75424 209664 0 0 3 0x14200 bored sosplice
10103 300906 76938 0 2 0x82 syz-fuzzer
10103 43526 76938 0 3 0x4000082 nanosleep syz-fuzzer
10103 333727 76938 0 3 0x4000082 thrsleep syz-fuzzer
10103 309179 76938 0 3 0x4000082 thrsleep syz-fuzzer
10103 422306 76938 0 3 0x4000082 nanosleep syz-fuzzer
10103 434398 76938 0 3 0x4000082 thrsleep syz-fuzzer
10103 447645 76938 0 3 0x4000082 thrsleep syz-fuzzer
10103 230611 76938 0 3 0x4000082 thrsleep syz-fuzzer
10103 405561 76938 0 3 0x4000082 thrsleep syz-fuzzer
10103 107078 76938 0 3 0x4000082 thrsleep syz-fuzzer
76938 309365 57906 0 3 0x10008a pause ksh
57906 274087 1024 0 2 0x92 sshd
1024 223073 1 0 2 0x80 sshd
44992 84995 35201 74 3 0x100092 bpf pflogd
35201 320091 1 0 3 0x80 netio pflogd
65813 473007 98211 73 3 0x100090 kqread syslogd
98211 479636 1 0 3 0x100082 netio syslogd
69670 202766 1 77 2 0x100090 dhclient
21849 46770 1 0 2 0x80 dhclient
22214 513615 0 0 7 0x14200 zerothread
12355 292363 0 0 3 0x14200 aiodoned aiodoned
89595 2536 0 0 3 0x14200 syncer update
43158 292630 0 0 3 0x14200 cleaner cleaner
89973 106148 0 0 3 0x14200 reaper reaper
40326 94490 0 0 3 0x14200 pgdaemon pagedaemon
30467 103746 0 0 3 0x14200 bored crynlk
4858 94199 0 0 3 0x14200 bored crypto
3048 290193 0 0 3 0x40014200 acpi0 acpi0
14862 172725 0 0 3 0x40014200 idle1
45218 41021 0 0 2 0x14200 softnet
84703 271760 0 0 2 0x14200 systqmp
96343 516781 0 0 3 0x14200 bored systq
16928 472489 0 0 3 0x40014200 bored softclock
55672 190895 0 0 3 0x40014200 idle0
4171 194435 0 0 3 0x14200 bored smr
1 506238 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
Process 89873 (syz-executor.0) thread 0xffff800020ab0018 (287413)
exclusive rrwlock inode r = 0 (0xfffffd8067fe83d0)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1163
#1 rw_enter+0x447 sys/kern/kern_rwlock.c:306
#2 rrw_enter+0x4f sys/kern/kern_rwlock.c:435
#3 ufs_ihashins+0x45 sys/ufs/ufs/ufs_ihash.c:140
#4 ffs_vget+0x13e sys/ufs/ffs/ffs_vfsops.c:1352
#5 ffs_inode_alloc+0x1cf sys/ufs/ffs/ffs_alloc.c:392
#6 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1164
#7 VOP_MKDIR+0xc6 sys/kern/vfs_vops.c:450
#8 domkdirat+0x121 sys/kern/vfs_syscalls.c:2983
#9 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline]
#9 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
#10 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd806ec845e8)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1163
#1 rw_enter+0x447 sys/kern/kern_rwlock.c:306
#2 rrw_enter+0x4f sys/kern/kern_rwlock.c:435
#3 VOP_LOCK+0xf0 sys/kern/vfs_vops.c:615
#4 vn_lock+0x81 sys/kern/vfs_vnops.c:562
#5 vfs_lookup+0xe6 sys/kern/vfs_lookup.c:419
#6 namei+0x63c sys/kern/vfs_lookup.c:249
#7 domkdirat+0x75 sys/kern/vfs_syscalls.c:2968
#8 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline]
#8 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
#9 Xsyscall+0x128
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim
devbuf 9611 6470K 7493K 78643K 22877 0 0
pcb 13 10K 12K 78643K 847 0 0
rtable 107 13K 14K 78643K 2561 0 0
ifaddr 98 21K 23K 78643K 897 0 0
counters 39 33K 33K 78643K 39 0 0
ioctlops 0 0K 4K 78643K 1691 0 0
iov 0 0K 32K 78643K 1590 0 0
mount 1 1K 1K 78643K 1 0 0
vnodes 1216 76K 77K 78643K 5482 0 0
UFS quota 1 32K 32K 78643K 1 0 0
UFS mount 5 36K 36K 78643K 5 0 0
shm 2 1K 5K 78643K 57 0 0
VM map 2 1K 1K 78643K 29 0 0
sem 12 0K 1K 78643K 656 0 0
dirhash 12 2K 2K 78643K 12 0 0
ACPI 1808 196K 290K 78643K 12765 0 0
file desc 4 9K 25K 78643K 4262 0 0
sigio 1 0K 0K 78643K 330 0 0
proc 62 63K 95K 78643K 1689 0 0
subproc 23 1K 2K 78643K 374 0 0
NFS srvsock 1 0K 0K 78643K 1 0 0
NFS daemon 1 16K 16K 78643K 1 0 0
ip_moptions 0 0K 0K 78643K 338 0 0
in_multi 24 1K 2K 78643K 390 0 0
ether_multi 1 0K 0K 78643K 20 0 0
mrt 0 0K 0K 78643K 27 0 0
ISOFS mount 1 32K 32K 78643K 1 0 0
MSDOSFS mount 1 16K 16K 78643K 1 0 0
ttys 102 450K 450K 78643K 102 0 0
exec 0 0K 1K 78643K 956 0 0
pfkey data 0 0K 0K 78643K 2 0 0
pagedep 1 8K 8K 78643K 1 0 0
inodedep 1 32K 32K 78643K 1 0 0
newblk 1 0K 0K 78643K 1 0 0
VM swap 7 26K 26K 78643K 7 0 0
UVM amap 123 23K 31K 78643K 16064 0 0
UVM aobj 130 4K 5K 78643K 140 0 0
memdesc 1 4K 4K 78643K 1 0 0
crypto data 1 1K 1K 78643K 1 0 0
ip6_options 0 0K 0K 78643K 863 0 0
NDP 25 0K 1K 78643K 269 0 0
temp 250 3565K 4201K 78643K 105339 0 0
kqueue 0 0K 0K 78643K 72 0 0
SYN cache 2 16K 16K 78643K 2 0 0
ddb{1}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg
Idle
arp 64 70 0 65 1 0 1 1 0
8 0
plcache 128 20 0 0 1 0 1 1 0
8 0
rtpcb 80 5227 0 5225 1 0 1 1 0
8 0
rtentry 112 402 0 365 2 0 2 2 0
8 0
unpcb 120 1751 0 1740 6 4 2 2 0
8 1
syncache 264 18 0 18 8 8 0 1 0
8 0
tcpqe 32 5694 0 5694 4 4 0 2 0
8 0
tcpcb 544 2357 0 2353 46 34 12 12 0 8
11
inpcb 280 5496 0 5487 37 28 9 9 0
8 8
rttmr 72 11 0 10 1 0 1 1 0
8 0
ip6q 72 1 0 1 1 1 0 1 0
8 0
ip6af 40 1 0 1 1 1 0 1 0
8 0
nd6 48 54 0 51 2 1 1 1 0
8 0
pkpcb 40 17 0 17 6 6 0 1 0
8 0
swfcl 56 2 0 0 1 0 1 1 0
8 0
ppxss 1128 144 0 144 12 11 1 1 0
8 1
pffrag 232 45 0 45 14 13 1 1 0
482 1
pffrnode 88 45 0 45 14 13 1 1 0
8 1
pffrent 40 110 0 110 14 13 1 1 0
8 1
pfosfp 40 846 0 423 5 0 5 5 0
8 0
pfosfpen 112 1428 0 714 21 0 21 21 0
8 0
pfstitem 24 270 0 220 1 0 1 1 0
8 0
pfstkey 112 270 0 220 2 0 2 2 0
8 0
pfstate 328 270 0 220 7 1 6 6 0
8 0
pfrule 1360 21 0 16 2 1 1 2 0
8 0
art_heap8 4096 17 0 16 12 11 1 3 0
8 0
art_heap4 256 1728 0 1457 32 15 17 18 0
8 0
art_table 32 1745 0 1473 4 1 3 3 0
8 0
art_node 16 392 0 354 1 0 1 1 0
8 0
sysvmsgpl 40 28 0 13 1 0 1 1 0
8 0
semupl 112 2 0 2 1 1 0 1 0
8 0
semapl 112 653 0 643 1 0 1 1 0
8 0
shmpl 112 138 0 10 4 0 4 4 0
8 0
dirhash 1024 17 0 0 3 0 3 3 0
8 0
dino1pl 128 8515 0 7102 46 0 46 46 0
8 0
ffsino 272 8515 0 7102 95 0 95 95 0
8 0
nchpl 144 15479 0 15008 61 40 21 61 0
8 0
uvmvnodes 72 5926 0 0 108 0 108 108 0
8 0
vnodes 208 5926 0 0 312 0 312 312 0
8 0
namei 1024 56490 0 56489 3 2 1 1 0
8 0
percpumem 16 30 0 0 1 0 1 1 0
8 0
vmpool 552 27 0 27 11 11 0 1 0
8 0
scsiplug 64 6 0 6 4 4 0 1 0
8 0
scxspl 192 48696 0 48696 38 35 3 7 0
8 3
plimitpl 152 322 0 314 1 0 1 1 0
8 0
sigapl 432 4403 0 4389 3 1 2 3 0
8 0
futexpl 56 100864 0 100864 4 3 1 1 0
8 1
knotepl 112 3060 0 3041 9 7 2 3 0
8 1
kqueuepl 104 6627 0 6625 13 9 4 4 0
8 3
pipepl 112 2704 0 2686 10 9 1 2 0
8 0
fdescpl 488 4404 0 4389 3 0 3 3 0
8 0
filepl 152 45056 0 44966 53 41 12 14 0
8 8
lockfpl 104 3359 0 3358 1 0 1 1 0
8 0
lockfspl 48 859 0 858 1 0 1 1 0
8 0
sessionpl 112 39 0 28 1 0 1 1 0
8 0
pgrppl 48 67 0 56 1 0 1 1 0
8 0
ucredpl 96 4988 0 4978 1 0 1 1 0
8 0
zombiepl 144 4390 0 4389 4 3 1 1 0
8 0
processpl 896 4421 0 4389 4 0 4 4 0
8 0
procpl 632 13944 0 13903 7 2 5 5 0
8 1
srpgc 64 39 0 39 13 12 1 1 0
8 1
sosppl 128 116 0 116 15 14 1 1 0
8 1
sockpl 384 12555 0 12535 70 59 11 14 0
8 8
mcl64k 65536 18 0 0 3 0 3 3 0
8 0
mcl16k 16384 17 0 0 3 0 3 3 0
8 0
mcl12k 12288 17 0 0 2 0 2 2 0
8 0
mcl9k 9216 17 0 0 2 0 2 2 0
8 0
mcl8k 8192 25 0 0 4 1 3 3 0
8 0
mcl4k 4096 17 0 0 3 0 3 3 0
8 0
mcl2k2 2112 8 0 0 1 0 1 1 0
8 0
mcl2k 2048 268 0 0 31 6 25 31 0
8 0
mtagpl 80 216 0 0 3 0 3 3 0
8 0
mbufpl 256 742 0 0 34 0 34 34 0
8 0
bufpl 256 19535 0 12487 441 0 441 441 0
8 0
anonpl 16 482658 0 469974 156 78 78 85 0
124 4
amapchunkpl 152 31087 0 30977 78 69 9 12 0
158 3
amappl16 192 22541 0 21569 165 107 58 62 0
8 8
amappl15 184 810 0 809 4 3 1 1 0
8 0
amappl14 176 1600 0 1596 2 1 1 1 0
8 0
amappl13 168 355 0 355 4 4 0 1 0
8 0
amappl12 160 277 0 276 1 0 1 1 0
8 0
amappl11 152 534 0 518 1 0 1 1 0
8 0
amappl10 144 185 0 181 1 0 1 1 0
8 0
amappl9 136 1605 0 1598 1 0 1 1 0
8 0
amappl8 128 1163 0 1123 3 1 2 2 0
8 0
amappl7 120 300 0 290 1 0 1 1 0
8 0
amappl6 112 518 0 505 1 0 1 1 0
8 0
amappl5 104 588 0 574 1 0 1 1 0
8 0
amappl4 96 4373 0 4341 1 0 1 1 0
8 0
amappl3 88 1664 0 1659 1 0 1 1 0
8 0
amappl2 80 33729 0 33665 4 2 2 3 0
8 0
amappl1 72 107620 0 107202 25 15 10 20 0
8 0
amappl 80 14574 0 14537 3 1 2 2 0
84 0
dma4096 4096 1 0 1 1 1 0 1 0
8 0
dma256 256 6 0 6 1 1 0 1 0
8 0
dma128 128 253 0 253 1 1 0 1 0
8 0
dma64 64 6 0 6 1 1 0 1 0
8 0
dma32 32 7 0 7 1 1 0 1 0
8 0
dma16 16 17 0 17 1 1 0 1 0
8 0
aobjpl 64 139 0 10 3 0 3 3 0
8 0
uaddrrnd 24 4431 0 4389 1 0 1 1 0
8 0
uaddrbest 32 2 0 0 1 0 1 1 0
8 0
uaddr 24 4431 0 4389 1 0 1 1 0
8 0
vmmpekpl 168 36193 0 36161 2 0 2 2 0
8 0
vmmpepl 168 556698 0 554689 306 175 131 131 0 357
31
vmsppl 368 4403 0 4389 2 0 2 2 0
8 0
pdppl 4096 8869 0 8832 7 1 6 6 0
8 0
pvpl 32 1292144 0 1276293 343 156 187 205 0 265
18
pmappl 232 4430 0 4416 7 6 1 2 0
8 0
extentpl 40 41 0 26 1 0 1 1 0
8 0
phpool 112 723 0 73 19 0 19 19 0
8 0
---
This bug is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this bug report. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot found the following crash on:
HEAD commit: 81b7b661 fix gary zukav's "acceptance without proof" quote..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=17647f4d600000
kernel config: https://syzkaller.appspot.com/x/.config?x=26ca0a9c07f16a3a
dashboard link: https://syzkaller.appspot.com/bug?extid=11d4213f257f1dfb54f6
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+11d421...@syzkaller.appspotmail.com
uvm_fault(0xfffffd807f00a2e0, 0xff00000010, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at in6_purgeaddr+0x135: movq 0x8(%r12),%r13
ddb{1}>
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
kernel page fault
uvm_fault(0xfffffd807f00a2e0, 0xff00000010, 0, 1) -> e
in6_purgeaddr(ffff800000ad7100) at in6_purgeaddr+0x135
sys/netinet6/in6.c:915
end trace frame: 0xffff80002115ac80, count: 0
ddb{1}> trace
in6_purgeaddr(ffff800000ad7100) at in6_purgeaddr+0x135
sys/netinet6/in6.c:915
in6_ifdetach(ffff800000ad0800) at in6_ifdetach+0x74
sys/netinet6/in6_ifattach.c:422
if_detach(ffff800000ad0800) at if_detach+0x155 sys/net/if.c:1110
tun_clone_destroy(ffff800000ad0800) at tun_clone_destroy+0x1c7
sys/net/if_tun.c:278
spec_close(ffff80002115adb0) at spec_close+0x3b0 sys/kern/spec_vnops.c:553
VOP_CLOSE(fffffd806ec861a8,7,fffffd807f7c64e0,ffff800020ab0290) at
VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:175
vn_closefile(fffffd80667c13a8,ffff800020ab0290) at vn_closefile+0xd8
vn_close sys/kern/vfs_vnops.c:289 [inline]
vn_closefile(fffffd80667c13a8,ffff800020ab0290) at vn_closefile+0xd8
sys/kern/vfs_vnops.c:601
fdrop(fffffd80667c13a8,ffff800020ab0290) at fdrop+0xc2
sys/kern/kern_descrip.c:1273
closef(fffffd80667c13a8,ffff800020ab0290) at closef+0x11d
sys/kern/kern_descrip.c:1257
fdfree(ffff800020ab0290) at fdfree+0x101 sys/kern/kern_descrip.c:1189
exit1(ffff800020ab0290,19,1) at exit1+0x32f sys/kern/kern_exit.c:196
postsig(ffff800020ab0290,19) at postsig+0x4e3 sigexit
sys/kern/kern_sig.c:1499 [inline]
postsig(ffff800020ab0290,19) at postsig+0x4e3 sys/kern/kern_sig.c:1431
userret(ffff800020ab0290) at userret+0x199 sys/kern/kern_sig.c:1887
syscall(ffff80002115b230) at syscall+0x55f mi_syscall_return
sys/sys/syscall_mi.h:115 [inline]
syscall(ffff80002115b230) at syscall+0x55f sys/arch/amd64/amd64/trap.c:577
Xsyscall(6,38,7f7ffffe47a0,3,0,69c8f6e3000) at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffe4790, count: -15
ddb{1}> show registers
rdi 0x1
rsi 0x1
rbp 0xffff80002115ac10
rbx 0
rdx 0xa2
rcx 0
rax 0x3
r8 0x1
r9 0x1
r10 0xc6210df77524988e
r11 0x232a9017ef274187
r12 0xff00000008
r13 0
r14 0xffff800000ad7100
r15 0xffff800000ad0800
rip 0xffffffff81f52ed5 in6_purgeaddr+0x135
cs 0x8
rflags 0x10202 __ALIGN_SIZE+0xf202
rsp 0xffff80002115aba0
ss 0x10
in6_purgeaddr+0x135: movq 0x8(%r12),%r13
ddb{1}> show proc
PROC (syz-executor.1) pid=145573 stat=onproc
flags process=a<EXEC,EXITING> proc=2000<WEXIT>
pri=17, usrpri=81, nice=20
forw=0xffffffffffffffff, list=0xffff800020ab0508,0xffff800020ab0028
process=0xffff800020adc380 user=0xffff800021156000,
vmspace=0xfffffd807f00a2e0
estcpu=31, cpticks=2, pctcpu=0.41
user=0, sys=2, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
89873 287413 10103 0 2 0x2 syz-executor.0
1170 394162 1 0 3 0x100083 ttyin getty
22379 104994 0 0 3 0x14200 acct acct
75424 209664 0 0 3 0x14200 bored sosplice
10103 300906 76938 0 2 0x82 syz-fuzzer
10103 43526 76938 0 3 0x4000082 nanosleep syz-fuzzer
10103 333727 76938 0 3 0x4000082 thrsleep syz-fuzzer
10103 309179 76938 0 3 0x4000082 thrsleep syz-fuzzer
10103 422306 76938 0 3 0x4000082 nanosleep syz-fuzzer
10103 434398 76938 0 3 0x4000082 thrsleep syz-fuzzer
10103 447645 76938 0 3 0x4000082 thrsleep syz-fuzzer
10103 230611 76938 0 3 0x4000082 thrsleep syz-fuzzer
10103 405561 76938 0 3 0x4000082 thrsleep syz-fuzzer
10103 107078 76938 0 3 0x4000082 thrsleep syz-fuzzer
76938 309365 57906 0 3 0x10008a pause ksh
57906 274087 1024 0 2 0x92 sshd
1024 223073 1 0 2 0x80 sshd
44992 84995 35201 74 3 0x100092 bpf pflogd
35201 320091 1 0 3 0x80 netio pflogd
65813 473007 98211 73 3 0x100090 kqread syslogd
98211 479636 1 0 3 0x100082 netio syslogd
69670 202766 1 77 2 0x100090 dhclient
21849 46770 1 0 2 0x80 dhclient
22214 513615 0 0 7 0x14200 zerothread
12355 292363 0 0 3 0x14200 aiodoned aiodoned
89595 2536 0 0 3 0x14200 syncer update
43158 292630 0 0 3 0x14200 cleaner cleaner
89973 106148 0 0 3 0x14200 reaper reaper
40326 94490 0 0 3 0x14200 pgdaemon pagedaemon
30467 103746 0 0 3 0x14200 bored crynlk
4858 94199 0 0 3 0x14200 bored crypto
3048 290193 0 0 3 0x40014200 acpi0 acpi0
14862 172725 0 0 3 0x40014200 idle1
45218 41021 0 0 2 0x14200 softnet
84703 271760 0 0 2 0x14200 systqmp
96343 516781 0 0 3 0x14200 bored systq
16928 472489 0 0 3 0x40014200 bored softclock
55672 190895 0 0 3 0x40014200 idle0
4171 194435 0 0 3 0x14200 bored smr
1 506238 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
Process 89873 (syz-executor.0) thread 0xffff800020ab0018 (287413)
exclusive rrwlock inode r = 0 (0xfffffd8067fe83d0)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1163
#1 rw_enter+0x447 sys/kern/kern_rwlock.c:306
#2 rrw_enter+0x4f sys/kern/kern_rwlock.c:435
#3 ufs_ihashins+0x45 sys/ufs/ufs/ufs_ihash.c:140
#4 ffs_vget+0x13e sys/ufs/ffs/ffs_vfsops.c:1352
#5 ffs_inode_alloc+0x1cf sys/ufs/ffs/ffs_alloc.c:392
#6 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1164
#7 VOP_MKDIR+0xc6 sys/kern/vfs_vops.c:450
#8 domkdirat+0x121 sys/kern/vfs_syscalls.c:2983
#9 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline]
#9 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
#10 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd806ec845e8)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1163
#1 rw_enter+0x447 sys/kern/kern_rwlock.c:306
#2 rrw_enter+0x4f sys/kern/kern_rwlock.c:435
#3 VOP_LOCK+0xf0 sys/kern/vfs_vops.c:615
#4 vn_lock+0x81 sys/kern/vfs_vnops.c:562
#5 vfs_lookup+0xe6 sys/kern/vfs_lookup.c:419
#6 namei+0x63c sys/kern/vfs_lookup.c:249
#7 domkdirat+0x75 sys/kern/vfs_syscalls.c:2968
#8 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline]
#8 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
#9 Xsyscall+0x128
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim
devbuf 9611 6470K 7493K 78643K 22877 0 0
pcb 13 10K 12K 78643K 847 0 0
rtable 107 13K 14K 78643K 2561 0 0
ifaddr 98 21K 23K 78643K 897 0 0
counters 39 33K 33K 78643K 39 0 0
ioctlops 0 0K 4K 78643K 1691 0 0
iov 0 0K 32K 78643K 1590 0 0
mount 1 1K 1K 78643K 1 0 0
vnodes 1216 76K 77K 78643K 5482 0 0
UFS quota 1 32K 32K 78643K 1 0 0
UFS mount 5 36K 36K 78643K 5 0 0
shm 2 1K 5K 78643K 57 0 0
VM map 2 1K 1K 78643K 29 0 0
sem 12 0K 1K 78643K 656 0 0
dirhash 12 2K 2K 78643K 12 0 0
ACPI 1808 196K 290K 78643K 12765 0 0
file desc 4 9K 25K 78643K 4262 0 0
sigio 1 0K 0K 78643K 330 0 0
proc 62 63K 95K 78643K 1689 0 0
subproc 23 1K 2K 78643K 374 0 0
NFS srvsock 1 0K 0K 78643K 1 0 0
NFS daemon 1 16K 16K 78643K 1 0 0
ip_moptions 0 0K 0K 78643K 338 0 0
in_multi 24 1K 2K 78643K 390 0 0
ether_multi 1 0K 0K 78643K 20 0 0
mrt 0 0K 0K 78643K 27 0 0
ISOFS mount 1 32K 32K 78643K 1 0 0
MSDOSFS mount 1 16K 16K 78643K 1 0 0
ttys 102 450K 450K 78643K 102 0 0
exec 0 0K 1K 78643K 956 0 0
pfkey data 0 0K 0K 78643K 2 0 0
pagedep 1 8K 8K 78643K 1 0 0
inodedep 1 32K 32K 78643K 1 0 0
newblk 1 0K 0K 78643K 1 0 0
VM swap 7 26K 26K 78643K 7 0 0
UVM amap 123 23K 31K 78643K 16064 0 0
UVM aobj 130 4K 5K 78643K 140 0 0
memdesc 1 4K 4K 78643K 1 0 0
crypto data 1 1K 1K 78643K 1 0 0
ip6_options 0 0K 0K 78643K 863 0 0
NDP 25 0K 1K 78643K 269 0 0
temp 250 3565K 4201K 78643K 105339 0 0
kqueue 0 0K 0K 78643K 72 0 0
SYN cache 2 16K 16K 78643K 2 0 0
ddb{1}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg
Idle
arp 64 70 0 65 1 0 1 1 0
8 0
plcache 128 20 0 0 1 0 1 1 0
8 0
rtpcb 80 5227 0 5225 1 0 1 1 0
8 0
rtentry 112 402 0 365 2 0 2 2 0
8 0
unpcb 120 1751 0 1740 6 4 2 2 0
8 1
syncache 264 18 0 18 8 8 0 1 0
8 0
tcpqe 32 5694 0 5694 4 4 0 2 0
8 0
tcpcb 544 2357 0 2353 46 34 12 12 0 8
11
inpcb 280 5496 0 5487 37 28 9 9 0
8 8
rttmr 72 11 0 10 1 0 1 1 0
8 0
ip6q 72 1 0 1 1 1 0 1 0
8 0
ip6af 40 1 0 1 1 1 0 1 0
8 0
nd6 48 54 0 51 2 1 1 1 0
8 0
pkpcb 40 17 0 17 6 6 0 1 0
8 0
swfcl 56 2 0 0 1 0 1 1 0
8 0
ppxss 1128 144 0 144 12 11 1 1 0
8 1
pffrag 232 45 0 45 14 13 1 1 0
482 1
pffrnode 88 45 0 45 14 13 1 1 0
8 1
pffrent 40 110 0 110 14 13 1 1 0
8 1
pfosfp 40 846 0 423 5 0 5 5 0
8 0
pfosfpen 112 1428 0 714 21 0 21 21 0
8 0
pfstitem 24 270 0 220 1 0 1 1 0
8 0
pfstkey 112 270 0 220 2 0 2 2 0
8 0
pfstate 328 270 0 220 7 1 6 6 0
8 0
pfrule 1360 21 0 16 2 1 1 2 0
8 0
art_heap8 4096 17 0 16 12 11 1 3 0
8 0
art_heap4 256 1728 0 1457 32 15 17 18 0
8 0
art_table 32 1745 0 1473 4 1 3 3 0
8 0
art_node 16 392 0 354 1 0 1 1 0
8 0
sysvmsgpl 40 28 0 13 1 0 1 1 0
8 0
semupl 112 2 0 2 1 1 0 1 0
8 0
semapl 112 653 0 643 1 0 1 1 0
8 0
shmpl 112 138 0 10 4 0 4 4 0
8 0
dirhash 1024 17 0 0 3 0 3 3 0
8 0
dino1pl 128 8515 0 7102 46 0 46 46 0
8 0
ffsino 272 8515 0 7102 95 0 95 95 0
8 0
nchpl 144 15479 0 15008 61 40 21 61 0
8 0
uvmvnodes 72 5926 0 0 108 0 108 108 0
8 0
vnodes 208 5926 0 0 312 0 312 312 0
8 0
namei 1024 56490 0 56489 3 2 1 1 0
8 0
percpumem 16 30 0 0 1 0 1 1 0
8 0
vmpool 552 27 0 27 11 11 0 1 0
8 0
scsiplug 64 6 0 6 4 4 0 1 0
8 0
scxspl 192 48696 0 48696 38 35 3 7 0
8 3
plimitpl 152 322 0 314 1 0 1 1 0
8 0
sigapl 432 4403 0 4389 3 1 2 3 0
8 0
futexpl 56 100864 0 100864 4 3 1 1 0
8 1
knotepl 112 3060 0 3041 9 7 2 3 0
8 1
kqueuepl 104 6627 0 6625 13 9 4 4 0
8 3
pipepl 112 2704 0 2686 10 9 1 2 0
8 0
fdescpl 488 4404 0 4389 3 0 3 3 0
8 0
filepl 152 45056 0 44966 53 41 12 14 0
8 8
lockfpl 104 3359 0 3358 1 0 1 1 0
8 0
lockfspl 48 859 0 858 1 0 1 1 0
8 0
sessionpl 112 39 0 28 1 0 1 1 0
8 0
pgrppl 48 67 0 56 1 0 1 1 0
8 0
ucredpl 96 4988 0 4978 1 0 1 1 0
8 0
zombiepl 144 4390 0 4389 4 3 1 1 0
8 0
processpl 896 4421 0 4389 4 0 4 4 0
8 0
procpl 632 13944 0 13903 7 2 5 5 0
8 1
srpgc 64 39 0 39 13 12 1 1 0
8 1
sosppl 128 116 0 116 15 14 1 1 0
8 1
sockpl 384 12555 0 12535 70 59 11 14 0
8 8
mcl64k 65536 18 0 0 3 0 3 3 0
8 0
mcl16k 16384 17 0 0 3 0 3 3 0
8 0
mcl12k 12288 17 0 0 2 0 2 2 0
8 0
mcl9k 9216 17 0 0 2 0 2 2 0
8 0
mcl8k 8192 25 0 0 4 1 3 3 0
8 0
mcl4k 4096 17 0 0 3 0 3 3 0
8 0
mcl2k2 2112 8 0 0 1 0 1 1 0
8 0
mcl2k 2048 268 0 0 31 6 25 31 0
8 0
mtagpl 80 216 0 0 3 0 3 3 0
8 0
mbufpl 256 742 0 0 34 0 34 34 0
8 0
bufpl 256 19535 0 12487 441 0 441 441 0
8 0
anonpl 16 482658 0 469974 156 78 78 85 0
124 4
amapchunkpl 152 31087 0 30977 78 69 9 12 0
158 3
amappl16 192 22541 0 21569 165 107 58 62 0
8 8
amappl15 184 810 0 809 4 3 1 1 0
8 0
amappl14 176 1600 0 1596 2 1 1 1 0
8 0
amappl13 168 355 0 355 4 4 0 1 0
8 0
amappl12 160 277 0 276 1 0 1 1 0
8 0
amappl11 152 534 0 518 1 0 1 1 0
8 0
amappl10 144 185 0 181 1 0 1 1 0
8 0
amappl9 136 1605 0 1598 1 0 1 1 0
8 0
amappl8 128 1163 0 1123 3 1 2 2 0
8 0
amappl7 120 300 0 290 1 0 1 1 0
8 0
amappl6 112 518 0 505 1 0 1 1 0
8 0
amappl5 104 588 0 574 1 0 1 1 0
8 0
amappl4 96 4373 0 4341 1 0 1 1 0
8 0
amappl3 88 1664 0 1659 1 0 1 1 0
8 0
amappl2 80 33729 0 33665 4 2 2 3 0
8 0
amappl1 72 107620 0 107202 25 15 10 20 0
8 0
amappl 80 14574 0 14537 3 1 2 2 0
84 0
dma4096 4096 1 0 1 1 1 0 1 0
8 0
dma256 256 6 0 6 1 1 0 1 0
8 0
dma128 128 253 0 253 1 1 0 1 0
8 0
dma64 64 6 0 6 1 1 0 1 0
8 0
dma32 32 7 0 7 1 1 0 1 0
8 0
dma16 16 17 0 17 1 1 0 1 0
8 0
aobjpl 64 139 0 10 3 0 3 3 0
8 0
uaddrrnd 24 4431 0 4389 1 0 1 1 0
8 0
uaddrbest 32 2 0 0 1 0 1 1 0
8 0
uaddr 24 4431 0 4389 1 0 1 1 0
8 0
vmmpekpl 168 36193 0 36161 2 0 2 2 0
8 0
vmmpepl 168 556698 0 554689 306 175 131 131 0 357
31
vmsppl 368 4403 0 4389 2 0 2 2 0
8 0
pdppl 4096 8869 0 8832 7 1 6 6 0
8 0
pvpl 32 1292144 0 1276293 343 156 187 205 0 265
18
pmappl 232 4430 0 4416 7 6 1 2 0
8 0
extentpl 40 41 0 26 1 0 1 1 0
8 0
phpool 112 723 0 73 19 0 19 19 0
8 0
---
This bug is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
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syzbot
Jan 6, 2020, 6:18:06 PM1/6/20
to syzkaller-o...@googlegroups.com
Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.
Crashes did not happen for a while, no reproducer and no activity.
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