panic: ufs_rename: lost dir entry
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最初の未読メッセージにスキップ
syzbot
2020/02/13 21:31:122020/02/13
To: syzkaller-o...@googlegroups.com
Hello,
syzbot found the following crash on:
HEAD commit: c9200921 Fix missing locking during calls to selwakeup().
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=10aac07ee00000
kernel config: https://syzkaller.appspot.com/x/.config?x=bf87b6915a88cd0d
dashboard link: https://syzkaller.appspot.com/bug?extid=f94777020f021fc5d7b3
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+f94777...@syzkaller.appspotmail.com
panic: ufs_rename: lost dir entry
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
70628 83048 32767 0x10 0 0 syz-executor.1
*336178 83048 32767 0x10 0x4000000 1K syz-executor.1
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff821db594) at panic+0x15c sys/kern/subr_prf.c:207
ufs_mkdir(ffff800024f99008) at ufs_mkdir
VOP_RENAME(fffffd8075ceb348,fffffd807cde3018,ffff800024f99218,fffffd80680dbea0,0,ffff800024f99148) at VOP_RENAME+0x106 sys/kern/vfs_vops.c:426
dorenameat(ffff800020a9dae8,2b,20000140,29,20000180) at dorenameat+0x2a3 sys/kern/vfs_syscalls.c:2979
syscall(ffff800024f993b0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff800024f993b0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x25b0aa53270, count: 8
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{1}>
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
ufs_rename: lost dir entry
ddb{1}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff821db594) at panic+0x15c sys/kern/subr_prf.c:207
ufs_mkdir(ffff800024f99008) at ufs_mkdir
VOP_RENAME(fffffd8075ceb348,fffffd807cde3018,ffff800024f99218,fffffd80680dbea0,0,ffff800024f99148) at VOP_RENAME+0x106 sys/kern/vfs_vops.c:426
dorenameat(ffff800020a9dae8,2b,20000140,29,20000180) at dorenameat+0x2a3 sys/kern/vfs_syscalls.c:2979
syscall(ffff800024f993b0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff800024f993b0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x25b0aa53270, count: -7
ddb{1}> show registers
rdi 0xffffffff816f8f37 db_enter+0x17
rsi 0x3075 __ALIGN_SIZE+0x2075
rbp 0xffff800024f98d80
rbx 0xffff800024f98e30
rdx 0x3076 __ALIGN_SIZE+0x2076
rcx 0xffff800021152000
rax 0xffff800021152000
r8 0xffffffff81102b0f kprintf+0x16f
r9 0x1
r10 0x25
r11 0xedefe92dcb9fd481
r12 0x3000000008
r13 0xffff800024f98d90
r14 0x100
r15 0x1
rip 0xffffffff816f8f38 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff800024f98d70
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb{1}> show proc
PROC (syz-executor.1) pid=336178 stat=onproc
flags process=10<SUGID> proc=4000000<THREAD>
pri=17, usrpri=86, nice=20
forw=0xffffffffffffffff, list=0xffff800020a9c768,0xffff800020a9cc58
process=0xffff800020ad6b60 user=0xffff800024f94000, vmspace=0xfffffd806ea1c008
estcpu=36, cpticks=0, pctcpu=0.0
user=0, sys=0, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
13207 423446 14513 32767 3 0x90 nanosleep syz-executor.0
13207 261160 14513 32767 3 0x4000090 netcon2 syz-executor.0
13207 110916 14513 32767 3 0x4000090 fsleep syz-executor.0
83048 70628 95030 32767 7 0x10 syz-executor.1
83048 37388 95030 32767 3 0x4000090 fsleep syz-executor.1
83048 484177 95030 32767 3 0x4000090 fsleep syz-executor.1
83048 63869 95030 32767 3 0x4000090 fsleep syz-executor.1
*83048 336178 95030 32767 7 0x4000010 syz-executor.1
83048 524083 95030 32767 3 0x4000090 fsleep syz-executor.1
83048 378016 95030 32767 3 0x4000090 fsleep syz-executor.1
95030 20933 61074 32767 3 0x90 nanosleep syz-executor.1
61074 479081 40183 0 3 0x82 wait syz-executor.1
14513 522029 20209 32767 3 0x90 nanosleep syz-executor.0
20209 404134 40183 0 3 0x82 wait syz-executor.0
23951 383991 0 0 3 0x14200 bored sosplice
40183 122813 75388 0 3 0x82 thrsleep syz-fuzzer
40183 420447 75388 0 3 0x4000082 thrsleep syz-fuzzer
40183 271174 75388 0 3 0x4000082 thrsleep syz-fuzzer
40183 415936 75388 0 3 0x4000082 thrsleep syz-fuzzer
40183 392000 75388 0 3 0x4000082 thrsleep syz-fuzzer
40183 20035 75388 0 3 0x4000082 thrsleep syz-fuzzer
40183 484804 75388 0 3 0x4000082 kqread syz-fuzzer
40183 520070 75388 0 3 0x4000082 thrsleep syz-fuzzer
40183 112335 75388 0 3 0x4000082 thrsleep syz-fuzzer
40183 309723 75388 0 3 0x4000082 thrsleep syz-fuzzer
75388 201743 23905 0 3 0x10008a pause ksh
23905 208557 70903 0 3 0x92 select sshd
14162 67747 1 0 3 0x100083 ttyin getty
70903 195823 1 0 3 0x80 select sshd
60060 178452 28925 73 3 0x100090 kqread syslogd
28925 296850 1 0 3 0x100082 netio syslogd
62202 341169 1 77 3 0x100090 poll dhclient
48246 389109 1 0 3 0x80 poll dhclient
72313 509836 0 0 3 0x14200 pgzero zerothread
26610 51897 0 0 3 0x14200 aiodoned aiodoned
78116 262621 0 0 3 0x14200 syncer update
39957 293018 0 0 3 0x14200 cleaner cleaner
94942 235847 0 0 3 0x14200 reaper reaper
5137 14214 0 0 3 0x14200 pgdaemon pagedaemon
81064 31616 0 0 3 0x14200 bored crynlk
12809 11294 0 0 3 0x14200 bored crypto
49830 206249 0 0 3 0x40014200 acpi0 acpi0
88448 495341 0 0 3 0x40014200 idle1
32095 431307 0 0 3 0x14200 bored softnet
38523 299839 0 0 3 0x14200 bored systqmp
62346 167258 0 0 3 0x14200 bored systq
6248 258959 0 0 3 0x40014200 bored softclock
59237 404583 0 0 3 0x40014200 idle0
41505 516335 0 0 3 0x14200 bored smr
1 511343 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
Process 83048 (syz-executor.1) thread 0xffff800020a9dae8 (336178)
exclusive rrwlock inode r = 0 (0xfffffd8075e482b8)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1164
#1 rw_enter+0x453 sys/kern/kern_rwlock.c:309
#2 rrw_enter+0x88 sys/kern/kern_rwlock.c:453
#3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:602
#4 vn_lock+0x81 sys/kern/vfs_vnops.c:571
#5 vget+0x1c8 sys/kern/vfs_subr.c:671
#6 ufs_ihashget+0x141 sys/ufs/ufs/ufs_ihash.c:119
#7 ffs_vget+0x74 sys/ufs/ffs/ffs_vfsops.c:1323
#8 ufs_lookup+0x14b7 sys/ufs/ufs/ufs_lookup.c:487
#9 VOP_LOOKUP+0x5b sys/kern/vfs_vops.c:90
#10 vfs_relookup+0xb0 sys/kern/vfs_lookup.c:789
#11 ufs_rename+0x1463 sys/ufs/ufs/ufs_vnops.c:1057
#12 VOP_RENAME+0x106 sys/kern/vfs_vops.c:426
#13 dorenameat+0x2a3 sys/kern/vfs_syscalls.c:2979
#14 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#14 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
#15 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd80664e0810)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1164
#1 rw_enter+0x453 sys/kern/kern_rwlock.c:309
#2 rrw_enter+0x88 sys/kern/kern_rwlock.c:453
#3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:602
#4 vn_lock+0x81 sys/kern/vfs_vnops.c:571
#5 vfs_relookup+0x53 sys/kern/vfs_lookup.c:780
#6 ufs_rename+0x1463 sys/ufs/ufs/ufs_vnops.c:1057
#7 VOP_RENAME+0x106 sys/kern/vfs_vops.c:426
#8 dorenameat+0x2a3 sys/kern/vfs_syscalls.c:2979
#9 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#9 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
#10 Xsyscall+0x128
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82633b18)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1164
#1 __mp_acquire_count+0x51 sys/kern/kern_lock.c:227
#2 mi_switch+0x392 sys/kern/sched_bsd.c:435
#3 sleep_finish+0x113 sys/kern/kern_synch.c:415
#4 sleep_finish_all+0x32 sleep_finish_timeout sys/kern/kern_synch.c:444 [inline]
#4 sleep_finish_all+0x32 sys/kern/kern_synch.c:206
#5 tsleep+0x1cc sys/kern/kern_synch.c:155
#6 biowait+0xa6 sys/kern/vfs_bio.c:1255
#7 bwrite+0x1e4 sys/kern/vfs_bio.c:765
#8 VOP_BWRITE+0x4a sys/kern/vfs_vops.c:727
#9 ufs_direnter+0x8e3 sys/ufs/ufs/ufs_lookup.c:909
#10 ufs_rename+0xbfe sys/ufs/ufs/ufs_vnops.c:951
#11 VOP_RENAME+0x106 sys/kern/vfs_vops.c:426
#12 dorenameat+0x2a3 sys/kern/vfs_syscalls.c:2979
#13 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#13 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
#14 Xsyscall+0x128
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 9488 6334K 6334K 78643K 11408 0
pcb 13 10K 12K 78643K 15 0
rtable 109 3K 4K 78643K 8286 0
ifaddr 39 13K 15K 78643K 1524 0
counters 43 33K 33K 78643K 457 0
ioctlops 0 0K 2K 78643K 348 0
iov 0 0K 28K 78643K 1514 0
mount 1 1K 1K 78643K 1 0
vnodes 1215 76K 76K 78643K 6168 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 9K 78643K 93 0
VM map 2 1K 1K 78643K 2 0
sem 12 1K 1K 78643K 3859 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1809 196K 290K 78643K 12766 0
file desc 8 25K 33K 78643K 8854 0
sigio 0 0K 0K 78643K 236 0
proc 48 50K 83K 78643K 9807 0
subproc 34 2K 2K 78643K 3553 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 1K 78643K 3102 0
in_multi 33 2K 2K 78643K 2575 0
ether_multi 1 0K 0K 78643K 28 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 169 758K 758K 78643K 169 0
exec 0 0K 1K 78643K 3737 0
pagedep 1 8K 8K 78643K 1 0
inodedep 1 32K 32K 78643K 1 0
newblk 1 0K 0K 78643K 1 0
VM swap 7 26K 26K 78643K 7 0
UVM amap 209 27K 42K 78643K 34258 0
UVM aobj 130 4K 4K 78643K 139 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 696 0
NDP 7 0K 0K 78643K 630 0
temp 102 3021K 3117K 78643K 48962 0
kqueue 3 4K 30K 78643K 1178 0
SYN cache 2 16K 16K 78643K 2 0
ddb{1}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
arp 64 433 0 427 1 0 1 1 0 8 0
plcache 128 20 0 0 1 0 1 1 0 8 0
rtpcb 80 1553 0 1551 1 0 1 1 0 8 0
rtentry 112 2189 0 2143 2 0 2 2 0 8 0
unpcb 120 11762 0 11747 43 42 1 5 0 8 0
syncache 264 117 0 117 32 31 1 1 0 8 1
sackhl 24 2 0 2 2 2 0 1 0 8 0
tcpqe 32 46 0 46 19 19 0 1 0 8 0
tcpcb 544 8422 0 8417 130 128 2 13 0 8 1
ipq 40 75 0 75 27 26 1 1 0 8 1
ipqe 40 1987 0 1987 27 26 1 1 0 8 1
inpcb 280 16738 0 16728 115 110 5 9 0 8 4
ip6q 72 1 0 1 1 1 0 1 0 8 0
ip6af 40 2 0 2 1 1 0 1 0 8 0
nd6 48 479 0 473 1 0 1 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 9633 0 9415 23 9 14 15 0 8 0
art_table 32 9634 0 9415 2 0 2 2 0 8 0
art_node 16 2188 0 2146 1 0 1 1 0 8 0
sysvmsgpl 40 69 0 54 1 0 1 1 0 8 0
semupl 112 1 0 1 1 1 0 1 0 8 0
semapl 112 3857 0 3847 1 0 1 1 0 8 0
shmpl 112 137 0 9 4 0 4 4 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino1pl 128 13843 0 12408 47 0 47 47 0 8 0
ffsino 272 13843 0 12408 97 0 97 97 0 8 0
nchpl 144 33801 0 32198 61 1 60 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 152982 0 152980 3 2 1 2 0 8 0
percpumem 16 239 0 207 1 0 1 1 0 8 0
scxspl 192 112837 0 112837 72 69 3 7 0 8 3
plimitpl 152 1534 0 1525 1 0 1 1 0 8 0
sigapl 432 8404 0 8388 14 12 2 3 0 8 0
futexpl 56 203030 0 203024 2 1 1 1 0 8 0
knotepl 112 4349 0 4330 12 10 2 3 0 8 1
kqueuepl 104 5738 0 5736 32 31 1 4 0 8 0
pipelkpl 48 4550 0 4540 1 0 1 1 0 8 0
pipepl 120 9100 0 9081 32 30 2 3 0 8 1
fdescpl 496 8405 0 8388 3 0 3 3 0 8 0
filepl 152 107123 0 106982 157 149 8 15 0 8 2
lockfpl 104 2814 0 2813 1 0 1 1 0 8 0
lockfspl 48 890 0 889 1 0 1 1 0 8 0
sessionpl 112 224 0 214 1 0 1 1 0 8 0
pgrppl 48 420 0 410 1 0 1 1 0 8 0
ucredpl 96 17662 0 17653 1 0 1 1 0 8 0
zombiepl 144 8388 0 8388 1 0 1 1 0 8 1
processpl 960 8421 0 8388 5 0 5 5 0 8 0
procpl 624 23994 0 23944 26 21 5 5 0 8 1
sosppl 128 227 0 226 32 31 1 1 0 8 0
sockpl 400 30450 0 30423 197 188 9 18 0 8 5
mcl64k 65536 59 0 0 4 1 3 3 0 8 0
mcl16k 16384 37 0 0 4 1 3 3 0 8 0
mcl12k 12288 33 0 0 2 0 2 2 0 8 0
mcl9k 9216 32 0 0 2 0 2 2 0 8 0
mcl8k 8192 18 0 0 3 0 3 3 0 8 0
mcl4k 4096 18 0 0 3 0 3 3 0 8 0
mcl2k2 2112 7 0 0 1 0 1 1 0 8 0
mcl2k 2048 203 0 0 19 5 14 19 0 8 0
mtagpl 80 1 0 0 1 0 1 1 0 8 0
mbufpl 256 963 0 0 24 1 23 24 0 8 0
bufpl 280 32866 0 26576 450 0 450 450 0 8 0
anonpl 16 1294601 0 1281003 252 184 68 81 0 125 0
amapchunkpl 152 85382 0 85234 180 172 8 20 0 158 1
amappl16 192 47112 0 46231 257 201 56 58 0 8 5
amappl15 184 1511 0 1504 1 0 1 1 0 8 0
amappl14 176 2264 0 2261 1 0 1 1 0 8 0
amappl13 168 498 0 498 16 16 0 1 0 8 0
amappl12 160 1197 0 1190 2 1 1 1 0 8 0
amappl11 152 1622 0 1610 1 0 1 1 0 8 0
amappl10 144 949 0 940 12 11 1 1 0 8 0
amappl9 136 4432 0 4429 1 0 1 1 0 8 0
amappl8 128 3346 0 3232 6 2 4 4 0 8 0
amappl7 120 2270 0 2249 1 0 1 1 0 8 0
amappl6 112 1112 0 1093 1 0 1 1 0 8 0
amappl5 104 2753 0 2744 1 0 1 1 0 8 0
amappl4 96 8969 0 8929 7 5 2 2 0 8 0
amappl3 88 1278 0 1271 1 0 1 1 0 8 0
amappl2 80 51251 0 51168 3 1 2 3 0 8 0
amappl1 72 239941 0 239470 53 44 9 20 0 8 0
amappl 80 27826 0 27773 2 0 2 2 0 84 0
dma4096 4096 1 0 1 1 1 0 1 0 8 0
dma256 256 6 0 6 1 1 0 1 0 8 0
dma128 128 253 0 253 1 1 0 1 0 8 0
dma64 64 6 0 6 1 1 0 1 0 8 0
dma32 32 7 0 7 1 1 0 1 0 8 0
dma16 16 18 0 17 1 0 1 1 0 8 0
aobjpl 64 138 0 9 3 0 3 3 0 8 0
uaddrrnd 24 8405 0 8388 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 8405 0 8388 1 0 1 1 0 8 0
vmmpekpl 168 88614 0 88582 2 0 2 2 0 8 0
vmmpepl 168 1229848 0 1227475 401 252 149 171 0 357 38
vmsppl 368 8404 0 8388 2 0 2 2 0 8 0
pdppl 4096 16817 0 16776 6 0 6 6 0 8 0
pvpl 32 3315546 0 3298497 584 419 165 196 0 265 5
pmappl 232 8404 0 8388 34 32 2 2 0 8 1
extentpl 40 46 0 29 1 0 1 1 0 8 0
phpool 112 547 0 358 6 0 6 6 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: c9200921 Fix missing locking during calls to selwakeup().
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=10aac07ee00000
kernel config: https://syzkaller.appspot.com/x/.config?x=bf87b6915a88cd0d
dashboard link: https://syzkaller.appspot.com/bug?extid=f94777020f021fc5d7b3
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+f94777...@syzkaller.appspotmail.com
panic: ufs_rename: lost dir entry
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
70628 83048 32767 0x10 0 0 syz-executor.1
*336178 83048 32767 0x10 0x4000000 1K syz-executor.1
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff821db594) at panic+0x15c sys/kern/subr_prf.c:207
ufs_mkdir(ffff800024f99008) at ufs_mkdir
VOP_RENAME(fffffd8075ceb348,fffffd807cde3018,ffff800024f99218,fffffd80680dbea0,0,ffff800024f99148) at VOP_RENAME+0x106 sys/kern/vfs_vops.c:426
dorenameat(ffff800020a9dae8,2b,20000140,29,20000180) at dorenameat+0x2a3 sys/kern/vfs_syscalls.c:2979
syscall(ffff800024f993b0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff800024f993b0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x25b0aa53270, count: 8
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{1}>
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
ufs_rename: lost dir entry
ddb{1}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff821db594) at panic+0x15c sys/kern/subr_prf.c:207
ufs_mkdir(ffff800024f99008) at ufs_mkdir
VOP_RENAME(fffffd8075ceb348,fffffd807cde3018,ffff800024f99218,fffffd80680dbea0,0,ffff800024f99148) at VOP_RENAME+0x106 sys/kern/vfs_vops.c:426
dorenameat(ffff800020a9dae8,2b,20000140,29,20000180) at dorenameat+0x2a3 sys/kern/vfs_syscalls.c:2979
syscall(ffff800024f993b0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff800024f993b0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x25b0aa53270, count: -7
ddb{1}> show registers
rdi 0xffffffff816f8f37 db_enter+0x17
rsi 0x3075 __ALIGN_SIZE+0x2075
rbp 0xffff800024f98d80
rbx 0xffff800024f98e30
rdx 0x3076 __ALIGN_SIZE+0x2076
rcx 0xffff800021152000
rax 0xffff800021152000
r8 0xffffffff81102b0f kprintf+0x16f
r9 0x1
r10 0x25
r11 0xedefe92dcb9fd481
r12 0x3000000008
r13 0xffff800024f98d90
r14 0x100
r15 0x1
rip 0xffffffff816f8f38 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff800024f98d70
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb{1}> show proc
PROC (syz-executor.1) pid=336178 stat=onproc
flags process=10<SUGID> proc=4000000<THREAD>
pri=17, usrpri=86, nice=20
forw=0xffffffffffffffff, list=0xffff800020a9c768,0xffff800020a9cc58
process=0xffff800020ad6b60 user=0xffff800024f94000, vmspace=0xfffffd806ea1c008
estcpu=36, cpticks=0, pctcpu=0.0
user=0, sys=0, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
13207 423446 14513 32767 3 0x90 nanosleep syz-executor.0
13207 261160 14513 32767 3 0x4000090 netcon2 syz-executor.0
13207 110916 14513 32767 3 0x4000090 fsleep syz-executor.0
83048 70628 95030 32767 7 0x10 syz-executor.1
83048 37388 95030 32767 3 0x4000090 fsleep syz-executor.1
83048 484177 95030 32767 3 0x4000090 fsleep syz-executor.1
83048 63869 95030 32767 3 0x4000090 fsleep syz-executor.1
*83048 336178 95030 32767 7 0x4000010 syz-executor.1
83048 524083 95030 32767 3 0x4000090 fsleep syz-executor.1
83048 378016 95030 32767 3 0x4000090 fsleep syz-executor.1
95030 20933 61074 32767 3 0x90 nanosleep syz-executor.1
61074 479081 40183 0 3 0x82 wait syz-executor.1
14513 522029 20209 32767 3 0x90 nanosleep syz-executor.0
20209 404134 40183 0 3 0x82 wait syz-executor.0
23951 383991 0 0 3 0x14200 bored sosplice
40183 122813 75388 0 3 0x82 thrsleep syz-fuzzer
40183 420447 75388 0 3 0x4000082 thrsleep syz-fuzzer
40183 271174 75388 0 3 0x4000082 thrsleep syz-fuzzer
40183 415936 75388 0 3 0x4000082 thrsleep syz-fuzzer
40183 392000 75388 0 3 0x4000082 thrsleep syz-fuzzer
40183 20035 75388 0 3 0x4000082 thrsleep syz-fuzzer
40183 484804 75388 0 3 0x4000082 kqread syz-fuzzer
40183 520070 75388 0 3 0x4000082 thrsleep syz-fuzzer
40183 112335 75388 0 3 0x4000082 thrsleep syz-fuzzer
40183 309723 75388 0 3 0x4000082 thrsleep syz-fuzzer
75388 201743 23905 0 3 0x10008a pause ksh
23905 208557 70903 0 3 0x92 select sshd
14162 67747 1 0 3 0x100083 ttyin getty
70903 195823 1 0 3 0x80 select sshd
60060 178452 28925 73 3 0x100090 kqread syslogd
28925 296850 1 0 3 0x100082 netio syslogd
62202 341169 1 77 3 0x100090 poll dhclient
48246 389109 1 0 3 0x80 poll dhclient
72313 509836 0 0 3 0x14200 pgzero zerothread
26610 51897 0 0 3 0x14200 aiodoned aiodoned
78116 262621 0 0 3 0x14200 syncer update
39957 293018 0 0 3 0x14200 cleaner cleaner
94942 235847 0 0 3 0x14200 reaper reaper
5137 14214 0 0 3 0x14200 pgdaemon pagedaemon
81064 31616 0 0 3 0x14200 bored crynlk
12809 11294 0 0 3 0x14200 bored crypto
49830 206249 0 0 3 0x40014200 acpi0 acpi0
88448 495341 0 0 3 0x40014200 idle1
32095 431307 0 0 3 0x14200 bored softnet
38523 299839 0 0 3 0x14200 bored systqmp
62346 167258 0 0 3 0x14200 bored systq
6248 258959 0 0 3 0x40014200 bored softclock
59237 404583 0 0 3 0x40014200 idle0
41505 516335 0 0 3 0x14200 bored smr
1 511343 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
Process 83048 (syz-executor.1) thread 0xffff800020a9dae8 (336178)
exclusive rrwlock inode r = 0 (0xfffffd8075e482b8)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1164
#1 rw_enter+0x453 sys/kern/kern_rwlock.c:309
#2 rrw_enter+0x88 sys/kern/kern_rwlock.c:453
#3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:602
#4 vn_lock+0x81 sys/kern/vfs_vnops.c:571
#5 vget+0x1c8 sys/kern/vfs_subr.c:671
#6 ufs_ihashget+0x141 sys/ufs/ufs/ufs_ihash.c:119
#7 ffs_vget+0x74 sys/ufs/ffs/ffs_vfsops.c:1323
#8 ufs_lookup+0x14b7 sys/ufs/ufs/ufs_lookup.c:487
#9 VOP_LOOKUP+0x5b sys/kern/vfs_vops.c:90
#10 vfs_relookup+0xb0 sys/kern/vfs_lookup.c:789
#11 ufs_rename+0x1463 sys/ufs/ufs/ufs_vnops.c:1057
#12 VOP_RENAME+0x106 sys/kern/vfs_vops.c:426
#13 dorenameat+0x2a3 sys/kern/vfs_syscalls.c:2979
#14 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#14 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
#15 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd80664e0810)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1164
#1 rw_enter+0x453 sys/kern/kern_rwlock.c:309
#2 rrw_enter+0x88 sys/kern/kern_rwlock.c:453
#3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:602
#4 vn_lock+0x81 sys/kern/vfs_vnops.c:571
#5 vfs_relookup+0x53 sys/kern/vfs_lookup.c:780
#6 ufs_rename+0x1463 sys/ufs/ufs/ufs_vnops.c:1057
#7 VOP_RENAME+0x106 sys/kern/vfs_vops.c:426
#8 dorenameat+0x2a3 sys/kern/vfs_syscalls.c:2979
#9 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#9 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
#10 Xsyscall+0x128
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82633b18)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1164
#1 __mp_acquire_count+0x51 sys/kern/kern_lock.c:227
#2 mi_switch+0x392 sys/kern/sched_bsd.c:435
#3 sleep_finish+0x113 sys/kern/kern_synch.c:415
#4 sleep_finish_all+0x32 sleep_finish_timeout sys/kern/kern_synch.c:444 [inline]
#4 sleep_finish_all+0x32 sys/kern/kern_synch.c:206
#5 tsleep+0x1cc sys/kern/kern_synch.c:155
#6 biowait+0xa6 sys/kern/vfs_bio.c:1255
#7 bwrite+0x1e4 sys/kern/vfs_bio.c:765
#8 VOP_BWRITE+0x4a sys/kern/vfs_vops.c:727
#9 ufs_direnter+0x8e3 sys/ufs/ufs/ufs_lookup.c:909
#10 ufs_rename+0xbfe sys/ufs/ufs/ufs_vnops.c:951
#11 VOP_RENAME+0x106 sys/kern/vfs_vops.c:426
#12 dorenameat+0x2a3 sys/kern/vfs_syscalls.c:2979
#13 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#13 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
#14 Xsyscall+0x128
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 9488 6334K 6334K 78643K 11408 0
pcb 13 10K 12K 78643K 15 0
rtable 109 3K 4K 78643K 8286 0
ifaddr 39 13K 15K 78643K 1524 0
counters 43 33K 33K 78643K 457 0
ioctlops 0 0K 2K 78643K 348 0
iov 0 0K 28K 78643K 1514 0
mount 1 1K 1K 78643K 1 0
vnodes 1215 76K 76K 78643K 6168 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 9K 78643K 93 0
VM map 2 1K 1K 78643K 2 0
sem 12 1K 1K 78643K 3859 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1809 196K 290K 78643K 12766 0
file desc 8 25K 33K 78643K 8854 0
sigio 0 0K 0K 78643K 236 0
proc 48 50K 83K 78643K 9807 0
subproc 34 2K 2K 78643K 3553 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 1K 78643K 3102 0
in_multi 33 2K 2K 78643K 2575 0
ether_multi 1 0K 0K 78643K 28 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 169 758K 758K 78643K 169 0
exec 0 0K 1K 78643K 3737 0
pagedep 1 8K 8K 78643K 1 0
inodedep 1 32K 32K 78643K 1 0
newblk 1 0K 0K 78643K 1 0
VM swap 7 26K 26K 78643K 7 0
UVM amap 209 27K 42K 78643K 34258 0
UVM aobj 130 4K 4K 78643K 139 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 696 0
NDP 7 0K 0K 78643K 630 0
temp 102 3021K 3117K 78643K 48962 0
kqueue 3 4K 30K 78643K 1178 0
SYN cache 2 16K 16K 78643K 2 0
ddb{1}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
arp 64 433 0 427 1 0 1 1 0 8 0
plcache 128 20 0 0 1 0 1 1 0 8 0
rtpcb 80 1553 0 1551 1 0 1 1 0 8 0
rtentry 112 2189 0 2143 2 0 2 2 0 8 0
unpcb 120 11762 0 11747 43 42 1 5 0 8 0
syncache 264 117 0 117 32 31 1 1 0 8 1
sackhl 24 2 0 2 2 2 0 1 0 8 0
tcpqe 32 46 0 46 19 19 0 1 0 8 0
tcpcb 544 8422 0 8417 130 128 2 13 0 8 1
ipq 40 75 0 75 27 26 1 1 0 8 1
ipqe 40 1987 0 1987 27 26 1 1 0 8 1
inpcb 280 16738 0 16728 115 110 5 9 0 8 4
ip6q 72 1 0 1 1 1 0 1 0 8 0
ip6af 40 2 0 2 1 1 0 1 0 8 0
nd6 48 479 0 473 1 0 1 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 9633 0 9415 23 9 14 15 0 8 0
art_table 32 9634 0 9415 2 0 2 2 0 8 0
art_node 16 2188 0 2146 1 0 1 1 0 8 0
sysvmsgpl 40 69 0 54 1 0 1 1 0 8 0
semupl 112 1 0 1 1 1 0 1 0 8 0
semapl 112 3857 0 3847 1 0 1 1 0 8 0
shmpl 112 137 0 9 4 0 4 4 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino1pl 128 13843 0 12408 47 0 47 47 0 8 0
ffsino 272 13843 0 12408 97 0 97 97 0 8 0
nchpl 144 33801 0 32198 61 1 60 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 152982 0 152980 3 2 1 2 0 8 0
percpumem 16 239 0 207 1 0 1 1 0 8 0
scxspl 192 112837 0 112837 72 69 3 7 0 8 3
plimitpl 152 1534 0 1525 1 0 1 1 0 8 0
sigapl 432 8404 0 8388 14 12 2 3 0 8 0
futexpl 56 203030 0 203024 2 1 1 1 0 8 0
knotepl 112 4349 0 4330 12 10 2 3 0 8 1
kqueuepl 104 5738 0 5736 32 31 1 4 0 8 0
pipelkpl 48 4550 0 4540 1 0 1 1 0 8 0
pipepl 120 9100 0 9081 32 30 2 3 0 8 1
fdescpl 496 8405 0 8388 3 0 3 3 0 8 0
filepl 152 107123 0 106982 157 149 8 15 0 8 2
lockfpl 104 2814 0 2813 1 0 1 1 0 8 0
lockfspl 48 890 0 889 1 0 1 1 0 8 0
sessionpl 112 224 0 214 1 0 1 1 0 8 0
pgrppl 48 420 0 410 1 0 1 1 0 8 0
ucredpl 96 17662 0 17653 1 0 1 1 0 8 0
zombiepl 144 8388 0 8388 1 0 1 1 0 8 1
processpl 960 8421 0 8388 5 0 5 5 0 8 0
procpl 624 23994 0 23944 26 21 5 5 0 8 1
sosppl 128 227 0 226 32 31 1 1 0 8 0
sockpl 400 30450 0 30423 197 188 9 18 0 8 5
mcl64k 65536 59 0 0 4 1 3 3 0 8 0
mcl16k 16384 37 0 0 4 1 3 3 0 8 0
mcl12k 12288 33 0 0 2 0 2 2 0 8 0
mcl9k 9216 32 0 0 2 0 2 2 0 8 0
mcl8k 8192 18 0 0 3 0 3 3 0 8 0
mcl4k 4096 18 0 0 3 0 3 3 0 8 0
mcl2k2 2112 7 0 0 1 0 1 1 0 8 0
mcl2k 2048 203 0 0 19 5 14 19 0 8 0
mtagpl 80 1 0 0 1 0 1 1 0 8 0
mbufpl 256 963 0 0 24 1 23 24 0 8 0
bufpl 280 32866 0 26576 450 0 450 450 0 8 0
anonpl 16 1294601 0 1281003 252 184 68 81 0 125 0
amapchunkpl 152 85382 0 85234 180 172 8 20 0 158 1
amappl16 192 47112 0 46231 257 201 56 58 0 8 5
amappl15 184 1511 0 1504 1 0 1 1 0 8 0
amappl14 176 2264 0 2261 1 0 1 1 0 8 0
amappl13 168 498 0 498 16 16 0 1 0 8 0
amappl12 160 1197 0 1190 2 1 1 1 0 8 0
amappl11 152 1622 0 1610 1 0 1 1 0 8 0
amappl10 144 949 0 940 12 11 1 1 0 8 0
amappl9 136 4432 0 4429 1 0 1 1 0 8 0
amappl8 128 3346 0 3232 6 2 4 4 0 8 0
amappl7 120 2270 0 2249 1 0 1 1 0 8 0
amappl6 112 1112 0 1093 1 0 1 1 0 8 0
amappl5 104 2753 0 2744 1 0 1 1 0 8 0
amappl4 96 8969 0 8929 7 5 2 2 0 8 0
amappl3 88 1278 0 1271 1 0 1 1 0 8 0
amappl2 80 51251 0 51168 3 1 2 3 0 8 0
amappl1 72 239941 0 239470 53 44 9 20 0 8 0
amappl 80 27826 0 27773 2 0 2 2 0 84 0
dma4096 4096 1 0 1 1 1 0 1 0 8 0
dma256 256 6 0 6 1 1 0 1 0 8 0
dma128 128 253 0 253 1 1 0 1 0 8 0
dma64 64 6 0 6 1 1 0 1 0 8 0
dma32 32 7 0 7 1 1 0 1 0 8 0
dma16 16 18 0 17 1 0 1 1 0 8 0
aobjpl 64 138 0 9 3 0 3 3 0 8 0
uaddrrnd 24 8405 0 8388 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 8405 0 8388 1 0 1 1 0 8 0
vmmpekpl 168 88614 0 88582 2 0 2 2 0 8 0
vmmpepl 168 1229848 0 1227475 401 252 149 171 0 357 38
vmsppl 368 8404 0 8388 2 0 2 2 0 8 0
pdppl 4096 16817 0 16776 6 0 6 6 0 8 0
pvpl 32 3315546 0 3298497 584 419 165 196 0 265 5
pmappl 232 8404 0 8388 34 32 2 2 0 8 1
extentpl 40 46 0 29 1 0 1 1 0 8 0
phpool 112 547 0 358 6 0 6 6 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
2020/02/13 23:08:132020/02/13
To: syzkaller-o...@googlegroups.com
syzbot has found a reproducer for the following crash on:
HEAD commit: c9200921 Fix missing locking during calls to selwakeup().
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=10ee3231e00000
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+f94777...@syzkaller.appspotmail.com
panic: ufs_rename: lost dir entry
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
519032 35073 0 0 0 1 syz-executor.0
* 315 35073 0 0 0x4000000 0K syz-executor.0
VOP_RENAME(fffffd806c1d1b80,fffffd807c132c30,ffff800020b87c98,fffffd807c132b60,0,ffff800020b87bc8) at VOP_RENAME+0x106 sys/kern/vfs_vops.c:426
dorenameat(ffff800020aa9608,e,20000140,c,20000180) at dorenameat+0x2a3 sys/kern/vfs_syscalls.c:2979
syscall(ffff800020b87e30) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff800020b87e30) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
ufs_rename: lost dir entry
ddb{0}> trace
VOP_RENAME(fffffd806c1d1b80,fffffd807c132c30,ffff800020b87c98,fffffd807c132b60,0,ffff800020b87bc8) at VOP_RENAME+0x106 sys/kern/vfs_vops.c:426
dorenameat(ffff800020aa9608,e,20000140,c,20000180) at dorenameat+0x2a3 sys/kern/vfs_syscalls.c:2979
syscall(ffff800020b87e30) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff800020b87e30) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
ddb{0}> show registers
rdi 0
rsi 0x1
rbp 0xffff800020b87800
rbx 0xffff800020b878b0
rdx 0x8b
rcx 0x2
rax 0x1
r11 0x158b7a16bc0e05b0
r12 0x3000000008
r13 0xffff800020b87810
PROC (syz-executor.0) pid=315 stat=onproc
flags process=0 proc=4000000<THREAD>
pri=17, usrpri=53, nice=20
forw=0xffffffffffffffff, list=0xffff800020aa9ae8,0xffffffff82618be0
process=0xffff800020a91690 user=0xffff800020b82000, vmspace=0xfffffd806ea25738
estcpu=3, cpticks=0, pctcpu=0.0
user=0, sys=0, intr=0
ddb{0}> ps
35073 36181 542 0 3 0x4000080 select syz-executor.0
35073 349764 542 0 3 0x4000080 select syz-executor.0
35073 29245 542 0 3 0x4000080 fsleep syz-executor.0
35073 7966 542 0 3 0x4000080 fsleep syz-executor.0
35073 336907 542 0 3 0x4000080 fsleep syz-executor.0
*35073 315 542 0 7 0x4000000 syz-executor.0
542 469040 42518 0 3 0x82 nanosleep syz-executor.0
42518 110130 44986 0 3 0x82 kqread syz-execprog
42518 304702 44986 0 3 0x4000082 thrsleep syz-execprog
42518 472090 44986 0 3 0x4000082 thrsleep syz-execprog
42518 434029 44986 0 3 0x4000082 thrsleep syz-execprog
42518 112714 44986 0 3 0x4000082 thrsleep syz-execprog
42518 326278 44986 0 3 0x4000082 thrsleep syz-execprog
42518 18759 44986 0 3 0x4000082 thrsleep syz-execprog
42518 511506 44986 0 3 0x4000082 thrsleep syz-execprog
42518 496918 44986 0 3 0x4000082 thrsleep syz-execprog
44986 469022 41436 0 3 0x10008a pause ksh
41436 216691 3791 0 3 0x92 select sshd
69173 402438 1 0 3 0x100083 ttyin getty
3791 478667 1 0 3 0x80 select sshd
4655 515593 39716 73 3 0x100090 kqread syslogd
39716 214089 1 0 3 0x100082 netio syslogd
69645 108617 1 77 3 0x100090 poll dhclient
44180 493840 1 0 3 0x80 poll dhclient
18739 230471 0 0 3 0x14200 pgzero zerothread
71321 9796 0 0 3 0x14200 aiodoned aiodoned
31068 260237 0 0 3 0x14200 syncer update
17507 244391 0 0 3 0x14200 cleaner cleaner
50908 266509 0 0 3 0x14200 reaper reaper
70320 52549 0 0 3 0x14200 pgdaemon pagedaemon
18004 143881 0 0 3 0x14200 bored crynlk
87328 111725 0 0 3 0x14200 bored crypto
87203 263508 0 0 3 0x40014200 acpi0 acpi0
82590 187672 0 0 3 0x40014200 idle1
13134 501438 0 0 3 0x14200 bored softnet
4601 15482 0 0 3 0x14200 bored systqmp
8493 413165 0 0 3 0x14200 bored systq
74655 206485 0 0 3 0x40014200 bored softclock
48125 393002 0 0 3 0x40014200 idle0
61351 322772 0 0 3 0x14200 bored smr
1 240500 0 0 3 0x82 wait init
Process 35073 (syz-executor.0) thread 0xffff800020aa9608 (315)
exclusive rrwlock inode r = 0 (0xfffffd806d1492b8)
ddb{0}> show malloc
pcb 13 8K 8K 78643K 13 0
rtable 83 2K 2K 78643K 153 0
ifaddr 32 8K 8K 78643K 32 0
counters 41 33K 33K 78643K 41 0
ioctlops 0 0K 2K 78643K 14 0
proc 47 50K 70K 78643K 318 0
ether_multi 1 0K 0K 78643K 1 0
exec 0 0K 1K 78643K 171 0
UVM aobj 2 2K 2K 78643K 2 0
temp 23 3005K 3069K 78643K 1690 0
kqueue 3 4K 4K 78643K 3 0
rtentry 112 34 0 1 1 0 1 1 0 8 0
unpcb 120 27 0 19 1 0 1 1 0 8 0
syncache 264 5 0 5 1 1 0 1 0 8 0
tcpcb 544 8 0 5 1 0 1 1 0 8 0
inpcb 280 28 0 20 1 0 1 1 0 8 0
nd6 48 2 0 0 1 0 1 1 0 8 0
art_table 32 169 0 0 2 0 2 2 0 8 0
art_node 16 33 0 3 1 0 1 1 0 8 0
ffsino 272 1419 0 19 94 0 94 94 0 8 0
nchpl 144 1648 0 44 60 0 60 60 0 8 0
uvmvnodes 72 1428 0 0 26 0 26 26 0 8 0
vnodes 208 1428 0 0 76 0 76 76 0 8 0
namei 1024 3950 0 3948 1 0 1 1 0 8 0
percpumem 16 31 0 0 1 0 1 1 0 8 0
scxspl 192 4457 0 4457 2 1 1 2 0 8 1
plimitpl 152 14 0 8 1 0 1 1 0 8 0
sigapl 432 197 0 185 2 0 2 2 0 8 0
futexpl 56 35 0 32 1 0 1 1 0 8 0
knotepl 112 39 0 28 1 0 1 1 0 8 0
kqueuepl 104 2 0 0 1 0 1 1 0 8 0
pipelkpl 48 67 0 60 1 0 1 1 0 8 0
pipepl 120 134 0 121 1 0 1 1 0 8 0
fdescpl 496 198 0 185 2 0 2 2 0 8 0
filepl 152 1036 0 971 3 0 3 3 0 8 0
lockfpl 104 5 0 4 1 0 1 1 0 8 0
lockfspl 48 3 0 2 1 0 1 1 0 8 0
sessionpl 112 18 0 9 1 0 1 1 0 8 0
pgrppl 48 18 0 9 1 0 1 1 0 8 0
ucredpl 96 47 0 40 1 0 1 1 0 8 0
zombiepl 144 185 0 185 1 0 1 1 0 8 1
processpl 960 213 0 185 4 0 4 4 0 8 0
procpl 624 227 0 185 4 0 4 4 0 8 0
sockpl 400 72 0 54 2 0 2 2 0 8 0
mcl4k 4096 3 0 0 1 0 1 1 0 8 0
mcl2k 2048 56 0 0 7 0 7 7 0 8 0
bufpl 280 3728 0 183 254 0 254 254 0 8 0
anonpl 16 20801 0 18988 16 2 14 14 0 125 6
amapchunkpl 152 779 0 701 5 0 5 5 0 158 1
amappl16 192 94 0 49 3 0 3 3 0 8 0
amappl15 184 50 0 46 1 0 1 1 0 8 0
amappl14 176 22 0 20 1 0 1 1 0 8 0
amappl13 168 3 0 1 1 0 1 1 0 8 0
amappl12 160 8 0 6 2 1 1 1 0 8 0
amappl11 152 52 0 40 1 0 1 1 0 8 0
amappl10 144 10 0 10 2 1 1 1 0 8 1
amappl9 136 413 0 409 1 0 1 1 0 8 0
amappl8 128 95 0 82 1 0 1 1 0 8 0
amappl7 120 86 0 76 1 0 1 1 0 8 0
amappl6 112 55 0 50 1 0 1 1 0 8 0
amappl5 104 113 0 104 1 0 1 1 0 8 0
amappl4 96 427 0 403 1 0 1 1 0 8 0
amappl3 88 125 0 117 1 0 1 1 0 8 0
amappl2 80 864 0 798 3 0 3 3 0 8 1
amappl1 72 13519 0 13098 24 6 18 20 0 8 8
amappl 80 426 0 393 1 0 1 1 0 84 0
uaddrrnd 24 198 0 185 1 0 1 1 0 8 0
vmmpekpl 168 5964 0 5943 2 0 2 2 0 8 0
vmmpepl 168 29755 0 28780 87 8 79 79 0 357 36
vmsppl 368 197 0 185 2 0 2 2 0 8 0
pdppl 4096 403 0 370 5 0 5 5 0 8 0
pvpl 32 104076 0 99911 116 0 116 116 0 265 82
pmappl 232 197 0 185 1 0 1 1 0 8 0
ddb{0}>
HEAD commit: c9200921 Fix missing locking during calls to selwakeup().
git tree: openbsd
kernel config: https://syzkaller.appspot.com/x/.config?x=bf87b6915a88cd0d
dashboard link: https://syzkaller.appspot.com/bug?extid=f94777020f021fc5d7b3
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=157cfc09e00000
dashboard link: https://syzkaller.appspot.com/bug?extid=f94777020f021fc5d7b3
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+f94777...@syzkaller.appspotmail.com
panic: ufs_rename: lost dir entry
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
* 315 35073 0 0 0x4000000 0K syz-executor.0
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff821db594) at panic+0x15c sys/kern/subr_prf.c:207
ufs_mkdir(ffff800020b87a88) at ufs_mkdir
panic(ffffffff821db594) at panic+0x15c sys/kern/subr_prf.c:207
VOP_RENAME(fffffd806c1d1b80,fffffd807c132c30,ffff800020b87c98,fffffd807c132b60,0,ffff800020b87bc8) at VOP_RENAME+0x106 sys/kern/vfs_vops.c:426
dorenameat(ffff800020aa9608,e,20000140,c,20000180) at dorenameat+0x2a3 sys/kern/vfs_syscalls.c:2979
syscall(ffff800020b87e30) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff800020b87e30) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xcb945f9a260, count: 8
end of kernel
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{0}>
reports. Insufficient info makes it difficult to find and fix bugs.
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
ufs_rename: lost dir entry
ddb{0}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff821db594) at panic+0x15c sys/kern/subr_prf.c:207
ufs_mkdir(ffff800020b87a88) at ufs_mkdir
panic(ffffffff821db594) at panic+0x15c sys/kern/subr_prf.c:207
VOP_RENAME(fffffd806c1d1b80,fffffd807c132c30,ffff800020b87c98,fffffd807c132b60,0,ffff800020b87bc8) at VOP_RENAME+0x106 sys/kern/vfs_vops.c:426
dorenameat(ffff800020aa9608,e,20000140,c,20000180) at dorenameat+0x2a3 sys/kern/vfs_syscalls.c:2979
syscall(ffff800020b87e30) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff800020b87e30) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xcb945f9a260, count: -7
end of kernel
ddb{0}> show registers
rdi 0
rsi 0x1
rbp 0xffff800020b87800
rbx 0xffff800020b878b0
rdx 0x8b
rcx 0x2
rax 0x1
r8 0xffffffff81102b0f kprintf+0x16f
r9 0x1
r10 0xf636ee0151d2d0e5
r9 0x1
r11 0x158b7a16bc0e05b0
r12 0x3000000008
r13 0xffff800020b87810
r14 0x100
r15 0x1
rip 0xffffffff816f8f38 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff800020b877f0
r15 0x1
rip 0xffffffff816f8f38 db_enter+0x18
cs 0x8
rflags 0x246
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb{0}> show proc
db_enter+0x18: addq $0x8,%rsp
PROC (syz-executor.0) pid=315 stat=onproc
flags process=0 proc=4000000<THREAD>
pri=17, usrpri=53, nice=20
forw=0xffffffffffffffff, list=0xffff800020aa9ae8,0xffffffff82618be0
process=0xffff800020a91690 user=0xffff800020b82000, vmspace=0xfffffd806ea25738
estcpu=3, cpticks=0, pctcpu=0.0
user=0, sys=0, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
35073 519032 542 0 7 0 syz-executor.0
35073 36181 542 0 3 0x4000080 select syz-executor.0
35073 349764 542 0 3 0x4000080 select syz-executor.0
35073 29245 542 0 3 0x4000080 fsleep syz-executor.0
35073 7966 542 0 3 0x4000080 fsleep syz-executor.0
35073 336907 542 0 3 0x4000080 fsleep syz-executor.0
*35073 315 542 0 7 0x4000000 syz-executor.0
542 469040 42518 0 3 0x82 nanosleep syz-executor.0
42518 110130 44986 0 3 0x82 kqread syz-execprog
42518 304702 44986 0 3 0x4000082 thrsleep syz-execprog
42518 472090 44986 0 3 0x4000082 thrsleep syz-execprog
42518 434029 44986 0 3 0x4000082 thrsleep syz-execprog
42518 112714 44986 0 3 0x4000082 thrsleep syz-execprog
42518 326278 44986 0 3 0x4000082 thrsleep syz-execprog
42518 18759 44986 0 3 0x4000082 thrsleep syz-execprog
42518 511506 44986 0 3 0x4000082 thrsleep syz-execprog
42518 496918 44986 0 3 0x4000082 thrsleep syz-execprog
44986 469022 41436 0 3 0x10008a pause ksh
41436 216691 3791 0 3 0x92 select sshd
69173 402438 1 0 3 0x100083 ttyin getty
3791 478667 1 0 3 0x80 select sshd
4655 515593 39716 73 3 0x100090 kqread syslogd
39716 214089 1 0 3 0x100082 netio syslogd
69645 108617 1 77 3 0x100090 poll dhclient
44180 493840 1 0 3 0x80 poll dhclient
18739 230471 0 0 3 0x14200 pgzero zerothread
71321 9796 0 0 3 0x14200 aiodoned aiodoned
31068 260237 0 0 3 0x14200 syncer update
17507 244391 0 0 3 0x14200 cleaner cleaner
50908 266509 0 0 3 0x14200 reaper reaper
70320 52549 0 0 3 0x14200 pgdaemon pagedaemon
18004 143881 0 0 3 0x14200 bored crynlk
87328 111725 0 0 3 0x14200 bored crypto
87203 263508 0 0 3 0x40014200 acpi0 acpi0
82590 187672 0 0 3 0x40014200 idle1
13134 501438 0 0 3 0x14200 bored softnet
4601 15482 0 0 3 0x14200 bored systqmp
8493 413165 0 0 3 0x14200 bored systq
74655 206485 0 0 3 0x40014200 bored softclock
48125 393002 0 0 3 0x40014200 idle0
61351 322772 0 0 3 0x14200 bored smr
1 240500 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
Process 35073 (syz-executor.0) thread 0xffff800020aa9608 (315)
exclusive rrwlock inode r = 0 (0xfffffd806d1492b8)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1164
#1 rw_enter+0x453 sys/kern/kern_rwlock.c:309
#2 rrw_enter+0x88 sys/kern/kern_rwlock.c:453
#3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:602
#4 vn_lock+0x81 sys/kern/vfs_vnops.c:571
#5 vget+0x1c8 sys/kern/vfs_subr.c:671
#6 ufs_ihashget+0x141 sys/ufs/ufs/ufs_ihash.c:119
#7 ffs_vget+0x74 sys/ufs/ffs/ffs_vfsops.c:1323
#8 ufs_lookup+0x14b7 sys/ufs/ufs/ufs_lookup.c:487
#9 VOP_LOOKUP+0x5b sys/kern/vfs_vops.c:90
#10 vfs_relookup+0xb0 sys/kern/vfs_lookup.c:789
#11 ufs_rename+0x1463 sys/ufs/ufs/ufs_vnops.c:1057
#12 VOP_RENAME+0x106 sys/kern/vfs_vops.c:426
#13 dorenameat+0x2a3 sys/kern/vfs_syscalls.c:2979
#14 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#14 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
#15 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd806d149e68)
#1 rw_enter+0x453 sys/kern/kern_rwlock.c:309
#2 rrw_enter+0x88 sys/kern/kern_rwlock.c:453
#3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:602
#4 vn_lock+0x81 sys/kern/vfs_vnops.c:571
#5 vget+0x1c8 sys/kern/vfs_subr.c:671
#6 ufs_ihashget+0x141 sys/ufs/ufs/ufs_ihash.c:119
#7 ffs_vget+0x74 sys/ufs/ffs/ffs_vfsops.c:1323
#8 ufs_lookup+0x14b7 sys/ufs/ufs/ufs_lookup.c:487
#9 VOP_LOOKUP+0x5b sys/kern/vfs_vops.c:90
#10 vfs_relookup+0xb0 sys/kern/vfs_lookup.c:789
#11 ufs_rename+0x1463 sys/ufs/ufs/ufs_vnops.c:1057
#12 VOP_RENAME+0x106 sys/kern/vfs_vops.c:426
#13 dorenameat+0x2a3 sys/kern/vfs_syscalls.c:2979
#14 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#14 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
#15 Xsyscall+0x128
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 9458 6329K 6329K 78643K 10549 0
pcb 13 8K 8K 78643K 13 0
rtable 83 2K 2K 78643K 153 0
ifaddr 32 8K 8K 78643K 32 0
counters 41 33K 33K 78643K 41 0
ioctlops 0 0K 2K 78643K 14 0
mount 1 1K 1K 78643K 1 0
vnodes 1180 74K 74K 78643K 1185 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 1K 78643K 2 0
UFS mount 5 36K 36K 78643K 5 0
VM map 2 1K 1K 78643K 2 0
sem 2 0K 0K 78643K 2 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1809 196K 290K 78643K 12766 0
file desc 3 8K 12K 78643K 18 0
ACPI 1809 196K 290K 78643K 12766 0
proc 47 50K 70K 78643K 318 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
in_multi 22 1K 1K 78643K 22 0
NFS daemon 1 16K 16K 78643K 1 0
ether_multi 1 0K 0K 78643K 1 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 19 95K 95K 78643K 19 0
MSDOSFS mount 1 16K 16K 78643K 1 0
exec 0 0K 1K 78643K 171 0
pagedep 1 8K 8K 78643K 1 0
inodedep 1 32K 32K 78643K 1 0
newblk 1 0K 0K 78643K 1 0
VM swap 7 26K 26K 78643K 7 0
UVM amap 80 11K 12K 78643K 869 0
inodedep 1 32K 32K 78643K 1 0
newblk 1 0K 0K 78643K 1 0
VM swap 7 26K 26K 78643K 7 0
UVM aobj 2 2K 2K 78643K 2 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
NDP 6 0K 0K 78643K 6 0
crypto data 1 1K 1K 78643K 1 0
temp 23 3005K 3069K 78643K 1690 0
kqueue 3 4K 4K 78643K 3 0
SYN cache 2 16K 16K 78643K 2 0
ddb{0}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
arp 64 4 0 0 1 0 1 1 0 8 0
plcache 128 20 0 0 1 0 1 1 0 8 0
rtpcb 80 17 0 15 1 0 1 1 0 8 0
rtentry 112 34 0 1 1 0 1 1 0 8 0
unpcb 120 27 0 19 1 0 1 1 0 8 0
syncache 264 5 0 5 1 1 0 1 0 8 0
tcpcb 544 8 0 5 1 0 1 1 0 8 0
inpcb 280 28 0 20 1 0 1 1 0 8 0
nd6 48 2 0 0 1 0 1 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 168 0 0 11 0 11 11 0 8 0
art_table 32 169 0 0 2 0 2 2 0 8 0
art_node 16 33 0 3 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino1pl 128 1419 0 19 46 0 46 46 0 8 0
ffsino 272 1419 0 19 94 0 94 94 0 8 0
nchpl 144 1648 0 44 60 0 60 60 0 8 0
uvmvnodes 72 1428 0 0 26 0 26 26 0 8 0
vnodes 208 1428 0 0 76 0 76 76 0 8 0
namei 1024 3950 0 3948 1 0 1 1 0 8 0
percpumem 16 31 0 0 1 0 1 1 0 8 0
scxspl 192 4457 0 4457 2 1 1 2 0 8 1
plimitpl 152 14 0 8 1 0 1 1 0 8 0
sigapl 432 197 0 185 2 0 2 2 0 8 0
futexpl 56 35 0 32 1 0 1 1 0 8 0
knotepl 112 39 0 28 1 0 1 1 0 8 0
kqueuepl 104 2 0 0 1 0 1 1 0 8 0
pipelkpl 48 67 0 60 1 0 1 1 0 8 0
pipepl 120 134 0 121 1 0 1 1 0 8 0
fdescpl 496 198 0 185 2 0 2 2 0 8 0
filepl 152 1036 0 971 3 0 3 3 0 8 0
lockfpl 104 5 0 4 1 0 1 1 0 8 0
lockfspl 48 3 0 2 1 0 1 1 0 8 0
sessionpl 112 18 0 9 1 0 1 1 0 8 0
pgrppl 48 18 0 9 1 0 1 1 0 8 0
ucredpl 96 47 0 40 1 0 1 1 0 8 0
zombiepl 144 185 0 185 1 0 1 1 0 8 1
processpl 960 213 0 185 4 0 4 4 0 8 0
procpl 624 227 0 185 4 0 4 4 0 8 0
sockpl 400 72 0 54 2 0 2 2 0 8 0
mcl4k 4096 3 0 0 1 0 1 1 0 8 0
mcl2k 2048 56 0 0 7 0 7 7 0 8 0
mtagpl 80 1 0 0 1 0 1 1 0 8 0
mbufpl 256 91 0 0 5 0 5 5 0 8 0
bufpl 280 3728 0 183 254 0 254 254 0 8 0
anonpl 16 20801 0 18988 16 2 14 14 0 125 6
amapchunkpl 152 779 0 701 5 0 5 5 0 158 1
amappl16 192 94 0 49 3 0 3 3 0 8 0
amappl15 184 50 0 46 1 0 1 1 0 8 0
amappl14 176 22 0 20 1 0 1 1 0 8 0
amappl13 168 3 0 1 1 0 1 1 0 8 0
amappl12 160 8 0 6 2 1 1 1 0 8 0
amappl11 152 52 0 40 1 0 1 1 0 8 0
amappl10 144 10 0 10 2 1 1 1 0 8 1
amappl9 136 413 0 409 1 0 1 1 0 8 0
amappl8 128 95 0 82 1 0 1 1 0 8 0
amappl7 120 86 0 76 1 0 1 1 0 8 0
amappl6 112 55 0 50 1 0 1 1 0 8 0
amappl5 104 113 0 104 1 0 1 1 0 8 0
amappl4 96 427 0 403 1 0 1 1 0 8 0
amappl3 88 125 0 117 1 0 1 1 0 8 0
amappl2 80 864 0 798 3 0 3 3 0 8 1
amappl1 72 13519 0 13098 24 6 18 20 0 8 8
amappl 80 426 0 393 1 0 1 1 0 84 0
dma4096 4096 1 0 1 1 1 0 1 0 8 0
dma256 256 6 0 6 1 1 0 1 0 8 0
dma128 128 253 0 253 1 1 0 1 0 8 0
dma64 64 6 0 6 1 1 0 1 0 8 0
dma32 32 7 0 7 1 1 0 1 0 8 0
dma16 16 18 0 17 1 0 1 1 0 8 0
aobjpl 64 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
uaddrrnd 24 198 0 185 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 198 0 185 1 0 1 1 0 8 0
vmmpekpl 168 5964 0 5943 2 0 2 2 0 8 0
vmmpepl 168 29755 0 28780 87 8 79 79 0 357 36
vmsppl 368 197 0 185 2 0 2 2 0 8 0
pdppl 4096 403 0 370 5 0 5 5 0 8 0
pvpl 32 104076 0 99911 116 0 116 116 0 265 82
pmappl 232 197 0 185 1 0 1 1 0 8 0
extentpl 40 46 0 29 1 0 1 1 0 8 0
phpool 112 139 0 2 4 0 4 4 0 8 0
ddb{0}>
syzbot
2022/03/16 20:26:192022/03/16
To: syzkaller-o...@googlegroups.com
syzbot has found a reproducer for the following issue on:
HEAD commit: f1075cc4acbf Initialise *out_name at the start of i2t_ASN1..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=105ca6b1700000
kernel config: https://syzkaller.appspot.com/x/.config?x=fe55924c11e64b0a
dashboard link: https://syzkaller.appspot.com/bug?extid=f94777020f021fc5d7b3
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1057f3e5700000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14235e23700000
IMPORTANT: if you fix the issue, please add the following tag to the commit:
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440
panic(ffffffff82569ff0) at panic+0x161 sys/kern/subr_prf.c:202
ufs_rename(ffff80002164f9e8) at ufs_rename+0x1649 sys/ufs/ufs/ufs_vnops.c:921
VOP_RENAME(fffffd807efe7460,fffffd80785d0508,ffff80002164fbb8,fffffd80785d0dc8,0,ffff80002164fb08) at VOP_RENAME+0xf0 sys/kern/vfs_vops.c:386
dorenameat(ffff8000215f7500,3,20000000,4,20000040) at dorenameat+0x29c sys/kern/vfs_syscalls.c:3022
syscall(ffff80002164fd50) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585
ddb> set $maxwidth = 0
ddb> show panic
*cpu0: ufs_rename: lost dir entry
ddb> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440
panic(ffffffff82569ff0) at panic+0x161 sys/kern/subr_prf.c:202
ufs_rename(ffff80002164f9e8) at ufs_rename+0x1649 sys/ufs/ufs/ufs_vnops.c:921
VOP_RENAME(fffffd807efe7460,fffffd80785d0508,ffff80002164fbb8,fffffd80785d0dc8,0,ffff80002164fb08) at VOP_RENAME+0xf0 sys/kern/vfs_vops.c:386
dorenameat(ffff8000215f7500,3,20000000,4,20000040) at dorenameat+0x29c sys/kern/vfs_syscalls.c:3022
syscall(ffff80002164fd50) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585
ddb> show registers
rdi 0
rsi 0x1
rbp 0xffff80002164f780
rbx 0xfffffd80785d0ce8
rdx 0x3fd
rcx 0
rax 0x22
r8 0x101010101010101
r9 0x8080808080808080
r10 0x837a181cc297061c
r11 0x59fb49e347f441d
r12 0
r13 0xfffffd806cc08b48
r14 0
r15 0x1
rip 0xffffffff81d28b78 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff80002164f770
ss 0
db_enter+0x18: addq $0x8,%rsp
ddb> show proc
PROC (syz-executor1501361750) pid=25774 stat=onproc
process=0xffff8000215f8be0 user=0xffff80002164a000, vmspace=0xfffffd806d875010
estcpu=6, cpticks=0, pctcpu=0.0
user=0, sys=0, intr=0
ddb> ps
99541 149057 87023 0 2 0 syz-executor1501361750
99541 416243 87023 0 3 0x4000080 fsleep syz-executor1501361750
56452 135517 32815 0 2 0 syz-executor1501361750
56452 52458 32815 0 3 0x4000080 fsleep syz-executor1501361750
*56452 25774 32815 0 7 0x4000000 syz-executor1501361750
71902 194106 18699 0 2 0 syz-executor1501361750
71902 400971 18699 0 3 0x4000080 fsleep syz-executor1501361750
18699 189760 92512 0 3 0x80 nanoslp syz-executor1501361750
32815 289527 92512 0 3 0x80 nanoslp syz-executor1501361750
87023 108684 92512 0 3 0x80 nanoslp syz-executor1501361750
79293 101155 92512 0 3 0x80 nanoslp syz-executor1501361750
92512 158527 20000 0 3 0x82 nanoslp syz-executor1501361750
20000 358005 41197 0 3 0x10008a sigsusp ksh
41197 90466 41519 0 3 0x9a kqread sshd
1763 439983 1 0 3 0x100083 ttyin getty
41519 158761 1 0 3 0x88 kqread sshd
54881 111428 75424 73 3 0x1100090 kqread syslogd
75424 455366 1 0 3 0x100082 netio syslogd
15268 330948 1 0 3 0x100080 kqread resolvd
12737 159309 60998 77 3 0x100092 kqread dhcpleased
89304 120970 60998 77 3 0x100092 kqread dhcpleased
60998 167604 1 0 3 0x80 kqread dhcpleased
42521 49515 0 0 3 0x14200 bored smr
52094 160795 0 0 2 0x14200 zerothread
13331 2917 0 0 3 0x14200 aiodoned aiodoned
52751 273005 0 0 3 0x14200 syncer update
56493 85660 0 0 3 0x14200 cleaner cleaner
7159 355624 0 0 3 0x14200 reaper reaper
89262 431774 0 0 3 0x14200 pgdaemon pagedaemon
86437 417169 0 0 3 0x14200 bored viomb
50186 442265 0 0 3 0x40014200 acpi0 acpi0
76224 491840 0 0 3 0x14200 bored softnet
27993 91803 0 0 3 0x14200 bored systqmp
48600 163478 0 0 3 0x14200 bored systq
60589 322855 0 0 3 0x40014200 bored softclock
11648 68339 0 0 3 0x40014200 idle0
1 223933 0 0 3 0x82 wait init
No such command
ddb> show malloc
ifaddr 24 7K 7K 78643K 24 0
counters 19 16K 16K 78643K 19 0
ioctlops 0 0K 2K 78643K 25 0
vnodes 1166 73K 73K 78643K 1179 0
sem 2 0K 0K 78643K 2 0
file desc 1 0K 0K 78643K 1 0
proc 55 54K 55K 78643K 226 0
ether_multi 1 0K 0K 78643K 1 0
exec 0 0K 2K 78643K 404 0
tdb 3 0K 0K 78643K 3 0
UVM aobj 3 2K 2K 78643K 3 0
temp 19 4686K 4750K 78643K 4001 0
kqueue 11 16K 18K 78643K 24 0
rtentry 112 23 0 1 1 0 1 1 0 8 0
unpcb 136 33 0 20 1 0 1 1 0 8 0
syncache 296 5 0 5 2 1 1 1 0 8 1
tcpcb 736 8 0 5 1 0 1 1 0 8 0
arp 88 2 0 0 1 0 1 1 0 8 0
inpcb 304 25 0 19 1 0 1 1 0 8 0
art_table 32 97 0 0 1 0 1 1 0 8 0
art_node 16 22 0 2 1 0 1 1 0 8 0
ffsino 240 1930 0 528 83 0 83 83 0 8 0
nchpl 144 2859 0 1306 59 0 59 59 0 8 0
uvmvnodes 80 1939 0 0 40 0 40 40 0 8 0
vnodes 224 1939 0 0 115 0 115 115 0 8 0
namei 1024 7088 0 7086 3 1 2 2 0 8 1
scxspl 216 8091 0 8091 11 10 1 8 0 8 1
plimitpl 152 15 0 9 1 0 1 1 0 8 0
sigapl 424 486 0 448 5 0 5 5 0 8 0
futexpl 64 1449 0 1446 1 0 1 1 0 8 0
knotepl 120 7734 0 7704 3 1 2 2 0 8 1
kqueuepl 184 20 0 13 1 0 1 1 0 8 0
pipepl 304 82 0 79 2 1 1 1 0 8 0
fdescpl 432 473 0 452 4 0 4 4 0 8 1
filepl 120 1834 0 1775 3 0 3 3 0 8 1
lockfpl 104 6 0 4 1 0 1 1 0 8 0
lockfspl 48 4 0 2 1 0 1 1 0 8 0
sessionpl 144 17 0 9 1 0 1 1 0 8 0
pgrppl 48 17 0 9 1 0 1 1 0 8 0
ucredpl 96 64 0 54 1 0 1 1 0 8 0
zombiepl 144 452 0 448 2 1 1 1 0 8 0
processpl 1000 486 0 448 6 0 6 6 0 8 0
procpl 672 813 0 771 5 0 5 5 0 8 1
sockpl 448 78 0 56 3 0 3 3 0 8 0
mcl8k 8192 9 0 9 2 1 1 1 0 8 1
mcl4k 4096 5 0 5 2 1 1 1 0 8 1
mcl2k 2048 5849 0 5821 7 1 6 6 0 8 2
mtagpl 96 4 0 4 1 1 0 1 0 8 0
mbufpl 256 11096 0 11029 6 0 6 6 0 8 1
bufpl 288 2463 0 87 170 0 170 170 0 8 0
anonpl 24 74711 0 71577 29 3 26 26 0 188 5
amapchunkpl 152 8547 0 8294 16 1 15 15 0 158 3
amappl16 200 406 0 388 3 1 2 2 0 8 0
amappl15 192 62 0 59 1 0 1 1 0 8 0
amappl13 176 33 0 32 2 1 1 1 0 8 0
amappl12 168 13 0 12 1 0 1 1 0 8 0
amappl11 160 44 0 33 1 0 1 1 0 8 0
amappl10 152 1 0 1 1 1 0 1 0 8 0
amappl9 144 428 0 426 1 0 1 1 0 8 0
amappl8 136 368 0 360 1 0 1 1 0 8 0
amappl7 128 60 0 57 1 0 1 1 0 8 0
amappl6 120 109 0 96 1 0 1 1 0 8 0
amappl5 112 222 0 214 1 0 1 1 0 8 0
amappl4 104 765 0 740 1 0 1 1 0 8 0
amappl3 96 291 0 278 1 0 1 1 0 8 0
amappl2 88 354 0 318 1 0 1 1 0 8 0
amappl1 80 10935 0 10515 13 3 10 10 0 8 0
amappl 88 3785 0 3672 4 0 4 4 0 92 0
uaddrrnd 24 473 0 452 1 0 1 1 0 8 0
vmmpekpl 168 7153 0 7139 1 0 1 1 0 8 0
vmmpepl 168 37761 0 36622 70 5 65 65 0 357 15
vmsppl 272 472 0 452 3 1 2 2 0 8 0
rwobjpl 24 13014 0 10474 16 0 16 16 0 8 0
pdppl 4096 952 0 904 86 30 56 64 0 8 8
pvpl 32 180799 0 175477 61 7 54 54 0 265 9
pmappl 216 472 0 452 2 0 2 2 0 8 0
extentpl 40 58 0 38 1 0 1 1 0 8 0
phpool 112 467 0 37 13 0 13 13 0 8 0
ddb> machine ddbcpu 0
No such command
ddb> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440
panic(ffffffff82569ff0) at panic+0x161 sys/kern/subr_prf.c:202
ufs_rename(ffff80002164f9e8) at ufs_rename+0x1649 sys/ufs/ufs/ufs_vnops.c:921
VOP_RENAME(fffffd807efe7460,fffffd80785d0508,ffff80002164fbb8,fffffd80785d0dc8,0,ffff80002164fb08) at VOP_RENAME+0xf0 sys/kern/vfs_vops.c:386
dorenameat(ffff8000215f7500,3,20000000,4,20000040) at dorenameat+0x29c sys/kern/vfs_syscalls.c:3022
syscall(ffff80002164fd50) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585
ddb> machine ddbcpu 1
No such command
ddb> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440
panic(ffffffff82569ff0) at panic+0x161 sys/kern/subr_prf.c:202
ufs_rename(ffff80002164f9e8) at ufs_rename+0x1649 sys/ufs/ufs/ufs_vnops.c:921
VOP_RENAME(fffffd807efe7460,fffffd80785d0508,ffff80002164fbb8,fffffd80785d0dc8,0,ffff80002164fb08) at VOP_RENAME+0xf0 sys/kern/vfs_vops.c:386
dorenameat(ffff8000215f7500,3,20000000,4,20000040) at dorenameat+0x29c sys/kern/vfs_syscalls.c:3022
syscall(ffff80002164fd50) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585
ddb>
HEAD commit: f1075cc4acbf Initialise *out_name at the start of i2t_ASN1..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=105ca6b1700000
kernel config: https://syzkaller.appspot.com/x/.config?x=fe55924c11e64b0a
dashboard link: https://syzkaller.appspot.com/bug?extid=f94777020f021fc5d7b3
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1057f3e5700000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14235e23700000
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+f94777...@syzkaller.appspotmail.com
panic: ufs_rename: lost dir entry
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
* 25774 56452 0 0 0x4000000 0 syz-executor1501361750
panic: ufs_rename: lost dir entry
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440
panic(ffffffff82569ff0) at panic+0x161 sys/kern/subr_prf.c:202
ufs_rename(ffff80002164f9e8) at ufs_rename+0x1649 sys/ufs/ufs/ufs_vnops.c:921
VOP_RENAME(fffffd807efe7460,fffffd80785d0508,ffff80002164fbb8,fffffd80785d0dc8,0,ffff80002164fb08) at VOP_RENAME+0xf0 sys/kern/vfs_vops.c:386
dorenameat(ffff8000215f7500,3,20000000,4,20000040) at dorenameat+0x29c sys/kern/vfs_syscalls.c:3022
syscall(ffff80002164fd50) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xa35a5a165f0, count: 8
end of kernel
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
reports. Insufficient info makes it difficult to find and fix bugs.
ddb>
ddb> set $maxwidth = 0
ddb> show panic
*cpu0: ufs_rename: lost dir entry
ddb> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440
panic(ffffffff82569ff0) at panic+0x161 sys/kern/subr_prf.c:202
ufs_rename(ffff80002164f9e8) at ufs_rename+0x1649 sys/ufs/ufs/ufs_vnops.c:921
VOP_RENAME(fffffd807efe7460,fffffd80785d0508,ffff80002164fbb8,fffffd80785d0dc8,0,ffff80002164fb08) at VOP_RENAME+0xf0 sys/kern/vfs_vops.c:386
dorenameat(ffff8000215f7500,3,20000000,4,20000040) at dorenameat+0x29c sys/kern/vfs_syscalls.c:3022
syscall(ffff80002164fd50) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xa35a5a165f0, count: -7
end of kernel
ddb> show registers
rdi 0
rsi 0x1
rbp 0xffff80002164f780
rbx 0xfffffd80785d0ce8
rdx 0x3fd
rcx 0
rax 0x22
r8 0x101010101010101
r9 0x8080808080808080
r10 0x837a181cc297061c
r11 0x59fb49e347f441d
r12 0
r13 0xfffffd806cc08b48
r14 0
r15 0x1
rip 0xffffffff81d28b78 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff80002164f770
ss 0
db_enter+0x18: addq $0x8,%rsp
ddb> show proc
PROC (syz-executor1501361750) pid=25774 stat=onproc
flags process=0 proc=4000000<THREAD>
pri=17, usrpri=53, nice=20
forw=0xffffffffffffffff, list=0xffff8000215f62a0,0xffff8000215f7270
pri=17, usrpri=53, nice=20
process=0xffff8000215f8be0 user=0xffff80002164a000, vmspace=0xfffffd806d875010
estcpu=6, cpticks=0, pctcpu=0.0
user=0, sys=0, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
82755 113621 79293 0 2 0 syz-executor1501361750
99541 149057 87023 0 2 0 syz-executor1501361750
99541 416243 87023 0 3 0x4000080 fsleep syz-executor1501361750
56452 135517 32815 0 2 0 syz-executor1501361750
56452 52458 32815 0 3 0x4000080 fsleep syz-executor1501361750
*56452 25774 32815 0 7 0x4000000 syz-executor1501361750
71902 194106 18699 0 2 0 syz-executor1501361750
71902 400971 18699 0 3 0x4000080 fsleep syz-executor1501361750
18699 189760 92512 0 3 0x80 nanoslp syz-executor1501361750
32815 289527 92512 0 3 0x80 nanoslp syz-executor1501361750
87023 108684 92512 0 3 0x80 nanoslp syz-executor1501361750
79293 101155 92512 0 3 0x80 nanoslp syz-executor1501361750
92512 158527 20000 0 3 0x82 nanoslp syz-executor1501361750
20000 358005 41197 0 3 0x10008a sigsusp ksh
41197 90466 41519 0 3 0x9a kqread sshd
1763 439983 1 0 3 0x100083 ttyin getty
41519 158761 1 0 3 0x88 kqread sshd
54881 111428 75424 73 3 0x1100090 kqread syslogd
75424 455366 1 0 3 0x100082 netio syslogd
15268 330948 1 0 3 0x100080 kqread resolvd
12737 159309 60998 77 3 0x100092 kqread dhcpleased
89304 120970 60998 77 3 0x100092 kqread dhcpleased
60998 167604 1 0 3 0x80 kqread dhcpleased
42521 49515 0 0 3 0x14200 bored smr
52094 160795 0 0 2 0x14200 zerothread
13331 2917 0 0 3 0x14200 aiodoned aiodoned
52751 273005 0 0 3 0x14200 syncer update
56493 85660 0 0 3 0x14200 cleaner cleaner
7159 355624 0 0 3 0x14200 reaper reaper
89262 431774 0 0 3 0x14200 pgdaemon pagedaemon
86437 417169 0 0 3 0x14200 bored viomb
50186 442265 0 0 3 0x40014200 acpi0 acpi0
76224 491840 0 0 3 0x14200 bored softnet
27993 91803 0 0 3 0x14200 bored systqmp
48600 163478 0 0 3 0x14200 bored systq
60589 322855 0 0 3 0x40014200 bored softclock
11648 68339 0 0 3 0x40014200 idle0
1 223933 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 10131 6381K 6412K 78643K 11221 0
pcb 13 8K 8K 78643K 13 0
rtable 62 2K 2K 78643K 114 0
ifaddr 24 7K 7K 78643K 24 0
counters 19 16K 16K 78643K 19 0
ioctlops 0 0K 2K 78643K 25 0
mount 1 1K 1K 78643K 1 0
log 0 0K 0K 78643K 4 0
vnodes 1166 73K 73K 78643K 1179 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 1K 78643K 2 0
VM map 2 0K 0K 78643K 2 0
sem 2 0K 0K 78643K 2 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1697 195K 286K 78643K 12548 0
file desc 1 0K 0K 78643K 1 0
proc 55 54K 55K 78643K 226 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
in_multi 11 0K 0K 78643K 11 0
NFS daemon 1 16K 16K 78643K 1 0
ether_multi 1 0K 0K 78643K 1 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 25 122K 122K 78643K 25 0
MSDOSFS mount 1 16K 16K 78643K 1 0
exec 0 0K 2K 78643K 404 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 7 26K 26K 78643K 7 0
UVM amap 132 5K 7K 78643K 4063 0
inodedep 1 32K 32K 78643K 1 0
newblk 1 0K 0K 78643K 1 0
VM swap 7 26K 26K 78643K 7 0
UVM aobj 3 2K 2K 78643K 3 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
NDP 3 0K 0K 78643K 3 0
crypto data 1 1K 1K 78643K 1 0
temp 19 4686K 4750K 78643K 4001 0
kqueue 11 16K 18K 78643K 24 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 20 0 17 1 0 1 1 0 8 0
rtentry 112 23 0 1 1 0 1 1 0 8 0
unpcb 136 33 0 20 1 0 1 1 0 8 0
syncache 296 5 0 5 2 1 1 1 0 8 1
tcpcb 736 8 0 5 1 0 1 1 0 8 0
arp 88 2 0 0 1 0 1 1 0 8 0
inpcb 304 25 0 19 1 0 1 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 96 0 0 6 0 6 6 0 8 0
art_table 32 97 0 0 1 0 1 1 0 8 0
art_node 16 22 0 2 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 1930 0 528 88 0 88 88 0 8 0
ffsino 240 1930 0 528 83 0 83 83 0 8 0
nchpl 144 2859 0 1306 59 0 59 59 0 8 0
uvmvnodes 80 1939 0 0 40 0 40 40 0 8 0
vnodes 224 1939 0 0 115 0 115 115 0 8 0
namei 1024 7088 0 7086 3 1 2 2 0 8 1
scxspl 216 8091 0 8091 11 10 1 8 0 8 1
plimitpl 152 15 0 9 1 0 1 1 0 8 0
sigapl 424 486 0 448 5 0 5 5 0 8 0
futexpl 64 1449 0 1446 1 0 1 1 0 8 0
knotepl 120 7734 0 7704 3 1 2 2 0 8 1
kqueuepl 184 20 0 13 1 0 1 1 0 8 0
pipepl 304 82 0 79 2 1 1 1 0 8 0
fdescpl 432 473 0 452 4 0 4 4 0 8 1
filepl 120 1834 0 1775 3 0 3 3 0 8 1
lockfpl 104 6 0 4 1 0 1 1 0 8 0
lockfspl 48 4 0 2 1 0 1 1 0 8 0
sessionpl 144 17 0 9 1 0 1 1 0 8 0
pgrppl 48 17 0 9 1 0 1 1 0 8 0
ucredpl 96 64 0 54 1 0 1 1 0 8 0
zombiepl 144 452 0 448 2 1 1 1 0 8 0
processpl 1000 486 0 448 6 0 6 6 0 8 0
procpl 672 813 0 771 5 0 5 5 0 8 1
sockpl 448 78 0 56 3 0 3 3 0 8 0
mcl8k 8192 9 0 9 2 1 1 1 0 8 1
mcl4k 4096 5 0 5 2 1 1 1 0 8 1
mcl2k 2048 5849 0 5821 7 1 6 6 0 8 2
mtagpl 96 4 0 4 1 1 0 1 0 8 0
mbufpl 256 11096 0 11029 6 0 6 6 0 8 1
bufpl 288 2463 0 87 170 0 170 170 0 8 0
anonpl 24 74711 0 71577 29 3 26 26 0 188 5
amapchunkpl 152 8547 0 8294 16 1 15 15 0 158 3
amappl16 200 406 0 388 3 1 2 2 0 8 0
amappl15 192 62 0 59 1 0 1 1 0 8 0
amappl13 176 33 0 32 2 1 1 1 0 8 0
amappl12 168 13 0 12 1 0 1 1 0 8 0
amappl11 160 44 0 33 1 0 1 1 0 8 0
amappl10 152 1 0 1 1 1 0 1 0 8 0
amappl9 144 428 0 426 1 0 1 1 0 8 0
amappl8 136 368 0 360 1 0 1 1 0 8 0
amappl7 128 60 0 57 1 0 1 1 0 8 0
amappl6 120 109 0 96 1 0 1 1 0 8 0
amappl5 112 222 0 214 1 0 1 1 0 8 0
amappl4 104 765 0 740 1 0 1 1 0 8 0
amappl3 96 291 0 278 1 0 1 1 0 8 0
amappl2 88 354 0 318 1 0 1 1 0 8 0
amappl1 80 10935 0 10515 13 3 10 10 0 8 0
amappl 88 3785 0 3672 4 0 4 4 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 2 0 0 1 0 1 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
uaddrrnd 24 473 0 452 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 473 0 452 1 0 1 1 0 8 0
vmmpekpl 168 7153 0 7139 1 0 1 1 0 8 0
vmmpepl 168 37761 0 36622 70 5 65 65 0 357 15
vmsppl 272 472 0 452 3 1 2 2 0 8 0
rwobjpl 24 13014 0 10474 16 0 16 16 0 8 0
pdppl 4096 952 0 904 86 30 56 64 0 8 8
pvpl 32 180799 0 175477 61 7 54 54 0 265 9
pmappl 216 472 0 452 2 0 2 2 0 8 0
extentpl 40 58 0 38 1 0 1 1 0 8 0
phpool 112 467 0 37 13 0 13 13 0 8 0
ddb> machine ddbcpu 0
No such command
ddb> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440
panic(ffffffff82569ff0) at panic+0x161 sys/kern/subr_prf.c:202
ufs_rename(ffff80002164f9e8) at ufs_rename+0x1649 sys/ufs/ufs/ufs_vnops.c:921
VOP_RENAME(fffffd807efe7460,fffffd80785d0508,ffff80002164fbb8,fffffd80785d0dc8,0,ffff80002164fb08) at VOP_RENAME+0xf0 sys/kern/vfs_vops.c:386
dorenameat(ffff8000215f7500,3,20000000,4,20000040) at dorenameat+0x29c sys/kern/vfs_syscalls.c:3022
syscall(ffff80002164fd50) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xa35a5a165f0, count: -7
end of kernel
ddb> machine ddbcpu 1
No such command
ddb> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440
panic(ffffffff82569ff0) at panic+0x161 sys/kern/subr_prf.c:202
ufs_rename(ffff80002164f9e8) at ufs_rename+0x1649 sys/ufs/ufs/ufs_vnops.c:921
VOP_RENAME(fffffd807efe7460,fffffd80785d0508,ffff80002164fbb8,fffffd80785d0dc8,0,ffff80002164fb08) at VOP_RENAME+0xf0 sys/kern/vfs_vops.c:386
dorenameat(ffff8000215f7500,3,20000000,4,20000040) at dorenameat+0x29c sys/kern/vfs_syscalls.c:3022
syscall(ffff80002164fd50) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xa35a5a165f0, count: -7
end of kernel
ddb>
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