assert "TAILQ_EMPTY(&lock->lf_blkhd)" failed in vfs_lockf.c (2)
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syzbot
May 27, 2022, 2:40:20 AM5/27/22
to syzkaller-o...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 12999fd17334 I'm a doofus, of course I need to use "write_..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=15d3adf9f00000
kernel config: https://syzkaller.appspot.com/x/.config?x=bf87b6915a88cd0d
dashboard link: https://syzkaller.appspot.com/bug?extid=c93afea6c27a3fa3af39
Unfortunately, I don't have any reproducer for this issue yet.
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+c93afe...@syzkaller.appspotmail.com
panic: kernel diagnostic assertion "TAILQ_EMPTY(&lock->lf_blkhd)" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/vfs_lockf.c", line 205
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*430357 35954 0 0 0x4000000 0 syz-executor.2
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff8259eac4) at panic+0x177 sys/kern/subr_prf.c:202
__assert(ffffffff82612e18,ffffffff8256ffc8,cd,ffffffff825f2f93) at __assert+0x25 sys/kern/subr_prf.c:161
lf_free(fffffd806f0883a8) at lf_free+0xe2 ls_rele sys/kern/vfs_lockf.c:152 [inline]
lf_free(fffffd806f0883a8) at lf_free+0xe2 sys/kern/vfs_lockf.c:208
lf_setlock(fffffd806f0883a8) at lf_setlock+0xb54
lf_advlock(ffff800000ce74a0,0,fffffd807f7d55d0,8,ffff800027536090,50) at lf_advlock+0x3a7 sys/kern/vfs_lockf.c:301
VOP_ADVLOCK(fffffd8075e1c870,fffffd807f7d55d0,8,ffff800027536090,50) at VOP_ADVLOCK+0x71 sys/kern/vfs_vops.c:628
sys_fcntl(ffff8000fffeed30,ffff800027536118,ffff800027536170) at sys_fcntl+0xad9
syscall(ffff8000275361e0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000275361e0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x5b3e7c18580, count: 5
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}>
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
*cpu0: kernel diagnostic assertion "TAILQ_EMPTY(&lock->lf_blkhd)" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/vfs_lockf.c", line 205
ddb{0}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff8259eac4) at panic+0x177 sys/kern/subr_prf.c:202
__assert(ffffffff82612e18,ffffffff8256ffc8,cd,ffffffff825f2f93) at __assert+0x25 sys/kern/subr_prf.c:161
lf_free(fffffd806f0883a8) at lf_free+0xe2 ls_rele sys/kern/vfs_lockf.c:152 [inline]
lf_free(fffffd806f0883a8) at lf_free+0xe2 sys/kern/vfs_lockf.c:208
lf_setlock(fffffd806f0883a8) at lf_setlock+0xb54
lf_advlock(ffff800000ce74a0,0,fffffd807f7d55d0,8,ffff800027536090,50) at lf_advlock+0x3a7 sys/kern/vfs_lockf.c:301
VOP_ADVLOCK(fffffd8075e1c870,fffffd807f7d55d0,8,ffff800027536090,50) at VOP_ADVLOCK+0x71 sys/kern/vfs_vops.c:628
sys_fcntl(ffff8000fffeed30,ffff800027536118,ffff800027536170) at sys_fcntl+0xad9
syscall(ffff8000275361e0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000275361e0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x5b3e7c18580, count: -10
ddb{0}> show registers
rdi 0
rsi 0x1
rbp 0xffff800027535d80
rbx 0xffffffff8297bc5f cpu_info_full_primary+0x2c5f
rdx 0xffff800000c049c0
rcx 0
rax 0xffff8000fffeed30
r8 0
r9 0x8080808080808080
r10 0x1842137bf3f6092f
r11 0x37a49192e7cb3971
r12 0xffffffff8297ba60 cpu_info_full_primary+0x2a60
r13 0
r14 0
r15 0x1
rip 0xffffffff8232f328 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff800027535d70
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb{0}> show proc
PROC (syz-executor.2) pid=430357 stat=onproc
flags process=0 proc=4000000<THREAD>
pri=32, usrpri=86, nice=20
forw=0xffffffffffffffff, list=0xffff8000fffef510,0xffffffff82a71a88
process=0xffff80002a5029a8 user=0xffff800027531000, vmspace=0xfffffd80678515e0
estcpu=36, cpticks=1, pctcpu=0.0
user=0, sys=1, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
35954 294520 84633 0 2 0 syz-executor.2
35954 156737 84633 0 3 0x4000080 lockf syz-executor.2
*35954 430357 84633 0 7 0x4000000 syz-executor.2
17914 478009 10186 0 2 0 syz-executor.0
17914 113534 10186 0 2 0x4000000 syz-executor.0
96985 416498 87753 0 3 0x80 nanoslp syz-executor.6
96985 370905 87753 0 3 0x4000080 lockf syz-executor.6
96985 233000 87753 0 3 0x4000080 fsleep syz-executor.6
96985 74698 87753 0 3 0x4000080 fsleep syz-executor.6
60109 56992 264 0 2 0x480 syz-executor.1
60109 161207 264 0 3 0x4000080 lockf syz-executor.1
60109 266763 264 0 3 0x4000080 fsleep syz-executor.1
84622 339869 15954 0 3 0x80 nanoslp syz-executor.4
84622 413171 15954 0 3 0x4000080 lockf syz-executor.4
84622 317506 15954 0 3 0x4000080 lockf syz-executor.4
84622 446770 15954 0 3 0x4000080 fsleep syz-executor.4
264 502427 18820 0 2 0x482 syz-executor.1
10186 46628 18820 0 3 0x82 nanoslp syz-executor.0
98456 214817 18820 0 3 0x82 piperd syz-executor.3
51595 329667 18820 0 3 0x82 piperd syz-executor.7
15954 243014 18820 0 2 0x482 syz-executor.4
84633 367068 18820 0 2 0x482 syz-executor.2
87753 507280 18820 0 3 0x82 nanoslp syz-executor.6
7727 459121 18820 0 2 0x2 syz-executor.5
8853 513935 0 0 3 0x14200 acct acct
20905 366283 0 0 3 0x14200 bored sosplice
18820 312450 46733 0 3 0x82 thrsleep syz-fuzzer
18820 409680 46733 0 2 0x4000482 syz-fuzzer
18820 274239 46733 0 3 0x4000082 thrsleep syz-fuzzer
18820 436334 46733 0 3 0x4000082 thrsleep syz-fuzzer
18820 424712 46733 0 3 0x4000082 nanoslp syz-fuzzer
18820 132682 46733 0 3 0x4000082 thrsleep syz-fuzzer
18820 145851 46733 0 3 0x4000082 kqread syz-fuzzer
18820 270692 46733 0 3 0x4000082 thrsleep syz-fuzzer
18820 270738 46733 0 3 0x4000082 thrsleep syz-fuzzer
46733 359143 79206 0 3 0x10008a sigsusp ksh
79206 287770 66627 0 3 0x9a kqread sshd
12984 271695 1 0 3 0x100083 ttyin getty
66627 424125 1 0 3 0x88 kqread sshd
76440 344505 62691 74 3 0x1100092 bpf pflogd
62691 41808 1 0 3 0x80 netio pflogd
15873 146798 70915 73 3 0x1100090 kqread syslogd
70915 193121 1 0 3 0x100082 netio syslogd
52239 412525 1 0 3 0x100080 kqread resolvd
80713 230132 4612 77 3 0x100092 kqread dhcpleased
21544 327590 4612 77 3 0x100092 kqread dhcpleased
4612 186375 1 0 3 0x80 kqread dhcpleased
12935 232482 0 0 3 0x14200 bored smr
2919 464982 0 0 2 0x14200 zerothread
54785 370691 0 0 3 0x14200 aiodoned aiodoned
56531 149883 0 0 3 0x14200 syncer update
67004 393576 0 0 3 0x14200 cleaner cleaner
88084 506249 0 0 3 0x14200 reaper reaper
17876 391294 0 0 3 0x14200 pgdaemon pagedaemon
53899 433765 0 0 3 0x14200 bored viomb
22098 162338 0 0 3 0x40014200 acpi0 acpi0
87404 321418 0 0 7 0x40014200 idle1
66807 368511 0 0 3 0x14200 bored softnet
53058 208227 0 0 3 0x14200 bored softnet
3392 218063 0 0 3 0x14200 bored softnet
20858 484123 0 0 3 0x14200 bored softnet
64923 414641 0 0 3 0x14200 bored systqmp
87547 131524 0 0 3 0x14200 bored systq
54168 271275 0 0 3 0x40014200 bored softclock
51283 22653 0 0 3 0x40014200 idle0
1 199828 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
Process 35954 (syz-executor.2) thread 0xffff8000fffeed30 (430357)
Process 17914 (syz-executor.0) thread 0xffff8000fffef510 (113534)
Process 7727 (syz-executor.5) thread 0xffff80002116fa48 (459121)
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10209 6510K 7367K 78643K 25577 0
pcb 13 14K 16K 78643K 845 0
rtable 191 15K 17K 78643K 1792 0
ifaddr 81 18K 21K 78643K 604 0
sysctl 2 0K 0K 78643K 2 0
counters 52 35K 36K 78643K 248 0
ioctlops 0 0K 4K 78643K 3582 0
iov 0 0K 24K 78643K 2151 0
mount 1 1K 1K 78643K 1 0
log 0 0K 0K 78643K 5 0
vnodes 1455 91K 91K 78643K 7951 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 9K 78643K 102 0
VM map 2 1K 1K 78643K 2 0
sem 12 0K 0K 78643K 2018 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1697 195K 286K 78643K 12548 0
file desc 15 53K 93K 78643K 10281 0
sigio 0 0K 0K 78643K 150 0
proc 71 91K 115K 78643K 1805 0
subproc 104 6K 6K 78643K 481 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 283 0
in_multi 77 5K 6K 78643K 504 0
ether_multi 1 0K 0K 78643K 33 0
mrt 1 0K 0K 78643K 25 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 193 864K 864K 78643K 193 0
exec 0 0K 2K 78643K 2548 0
pfkey data 0 0K 0K 78643K 5 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 356 428K 444K 78643K 60628 0
UVM aobj 131 6K 6K 78643K 139 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 153 0
NDP 12 0K 2K 78643K 187 0
temp 145 4762K 5786K 78643K 106921 0
kqueue 12 18K 26K 78643K 623 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
plcache 128 22 0 0 1 0 1 1 0 8 0
rtpcb 120 576 0 573 5 4 1 3 0 8 0
rtentry 112 629 0 548 4 0 4 4 0 8 0
unpcb 136 6932 0 6917 93 92 1 8 0 8 0
syncache 296 32 0 32 10 10 0 1 0 8 0
tcpqe 32 212 0 212 5 5 0 2 0 8 0
tcpcb 736 2540 0 2535 102 101 1 8 0 8 0
arp 120 139 0 125 1 0 1 1 0 8 0
inpcb 312 7227 0 7220 172 166 6 16 0 8 5
nd6 48 116 0 98 1 0 1 1 0 8 0
pkpcb 40 15 0 15 4 4 0 1 0 8 0
kcovpl 48 37 0 29 1 0 1 1 0 8 0
ppxss 1248 30 0 30 8 8 0 1 0 8 0
pffrag 232 34 0 32 6 5 1 1 0 482 0
pffrnode 88 34 0 32 6 5 1 1 0 8 0
pffrent 40 80 0 78 8 7 1 1 0 8 0
pfosfp 40 1428 0 1005 5 0 5 5 0 8 0
pfosfpen 112 1428 0 714 21 0 21 21 0 8 0
pfrktable 1344 1 0 0 1 0 1 1 0 8 0
pfstitem 24 23 0 21 1 0 1 1 0 8 0
pfstkey 112 23 0 21 1 0 1 1 0 8 0
pfstate 336 23 0 21 2 1 1 2 0 8 0
pfrule 1360 57 0 50 2 1 1 2 0 8 0
rttmr 64 5 0 5 1 1 0 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 2125 0 1765 46 17 29 29 0 8 2
art_table 32 2126 0 1765 4 0 4 4 0 8 0
art_node 16 625 0 555 1 0 1 1 0 8 0
sysvmsgpl 40 40 0 14 1 0 1 1 0 8 0
semupl 112 8 0 8 1 1 0 1 0 8 0
semapl 112 2011 0 2001 1 0 1 1 0 8 0
shmpl 112 136 0 8 4 0 4 4 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 16968 0 15483 94 0 94 94 0 8 0
ffsino 272 16968 0 15483 100 0 100 100 0 8 0
nchpl 144 30371 0 28723 63 0 63 63 0 8 0
uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0
vnodes 224 5926 0 0 349 0 349 349 0 8 0
namei 1024 118452 0 118450 3 2 1 1 0 8 0
percpumem 16 136 0 98 1 0 1 1 0 8 0
vcpupl 2048 22 0 0 3 0 3 3 0 8 0
vmpool 560 50 0 28 3 1 2 2 0 8 0
kstatmem 264 220 0 196 9 6 3 3 0 8 0
scsiplug 72 5 0 5 2 2 0 1 0 8 0
scxspl 216 84400 0 84400 15 14 1 8 0 8 1
plimitpl 152 1286 0 1271 1 0 1 1 0 8 0
sigapl 424 10554 0 10507 10 3 7 8 0 8 0
futexpl 64 99813 0 99809 3 2 1 1 0 8 0
knotepl 120 743 0 0 11 2 9 11 0 8 0
kqueuepl 216 1420 0 1412 19 18 1 5 0 8 0
pipepl 336 1516 0 1487 48 45 3 8 0 8 0
fdescpl 496 10514 0 10486 5 1 4 5 0 8 0
filepl 152 74469 0 74213 160 145 15 22 0 8 4
lockfpl 104 20367 0 20355 17 16 1 4 0 8 0
lockfspl 48 2725 0 2719 2 1 1 2 0 8 0
sessionpl 144 53 0 36 1 0 1 1 0 8 0
pgrppl 48 135 0 118 1 0 1 1 0 8 0
ucredpl 96 22521 0 22504 1 0 1 1 0 8 0
zombiepl 144 10507 0 10507 1 0 1 1 0 8 1
processpl 1064 10554 0 10507 5 0 5 5 0 8 0
procpl 672 29106 0 29040 24 17 7 9 0 8 0
srpgc 96 32 0 32 15 14 1 1 0 8 1
sosppl 168 31 0 31 9 9 0 1 0 8 0
sockpl 480 14758 0 14733 460 448 12 29 0 8 8
mcl64k 65536 17 0 0 3 0 3 3 0 8 0
mcl16k 16384 9 0 0 2 0 2 2 0 8 0
mcl12k 12288 6 0 0 1 0 1 1 0 8 0
mcl9k 9216 9 0 0 1 0 1 1 0 8 0
mcl8k 8192 15 0 0 2 0 2 2 0 8 0
mcl4k 4096 17 0 0 3 0 3 3 0 8 0
mcl2k2 2112 7 0 0 1 0 1 1 0 8 0
mcl2k 2048 340 0 0 36 7 29 36 0 8 0
mtagpl 96 711 0 0 14 0 14 14 0 8 0
mbufpl 256 1377 0 0 54 0 54 54 0 8 0
bufpl 288 18175 0 11843 453 0 453 453 0 8 0
anonpl 24 1969556 0 1954947 227 115 112 129 0 186 0
amapchunkpl 152 175370 0 174712 75 45 30 40 0 158 0
amappl16 200 24894 0 24311 99 67 32 43 0 8 0
amappl15 192 2094 0 2091 1 0 1 1 0 8 0
amappl14 184 1256 0 1252 1 0 1 1 0 8 0
amappl13 176 1269 0 1264 1 0 1 1 0 8 0
amappl12 168 1718 0 1712 1 0 1 1 0 8 0
amappl11 160 767 0 747 1 0 1 1 0 8 0
amappl10 152 1931 0 1920 1 0 1 1 0 8 0
amappl9 144 1608 0 1599 1 0 1 1 0 8 0
amappl8 136 1974 0 1863 4 0 4 4 0 8 0
amappl7 128 910 0 900 1 0 1 1 0 8 0
amappl6 120 1502 0 1469 3 1 2 2 0 8 0
amappl5 112 9782 0 9767 1 0 1 1 0 8 0
amappl4 104 2936 0 2905 2 1 1 2 0 8 0
amappl3 96 33105 0 33049 2 0 2 2 0 8 0
amappl2 88 12727 0 12663 3 1 2 3 0 8 0
amappl1 80 251010 0 250349 22 6 16 20 0 8 0
amappl 88 59439 0 59239 6 1 5 5 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 72 138 0 8 3 0 3 3 0 8 0
uaddrrnd 24 10564 0 10514 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 10564 0 10514 1 0 1 1 0 8 0
vmmpekpl 168 78298 0 78229 4 0 4 4 0 8 0
vmmpepl 168 1018074 0 1015413 275 143 132 145 0 357 0
vmsppl 368 10563 0 10514 6 1 5 5 0 8 0
rwobjpl 56 251339 0 243572 119 8 111 113 0 8 0
pdppl 4096 21135 0 21050 611 520 91 93 0 8 6
pvpl 32 3965285 0 3945906 397 208 189 257 0 265 0
pmappl 248 10563 0 10514 5 1 4 4 0 8 0
extentpl 40 58 0 38 1 0 1 1 0 8 0
phpool 112 1749 0 863 27 1 26 26 0 8 0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff8259eac4) at panic+0x177 sys/kern/subr_prf.c:202
__assert(ffffffff82612e18,ffffffff8256ffc8,cd,ffffffff825f2f93) at __assert+0x25 sys/kern/subr_prf.c:161
lf_free(fffffd806f0883a8) at lf_free+0xe2 ls_rele sys/kern/vfs_lockf.c:152 [inline]
lf_free(fffffd806f0883a8) at lf_free+0xe2 sys/kern/vfs_lockf.c:208
lf_setlock(fffffd806f0883a8) at lf_setlock+0xb54
lf_advlock(ffff800000ce74a0,0,fffffd807f7d55d0,8,ffff800027536090,50) at lf_advlock+0x3a7 sys/kern/vfs_lockf.c:301
VOP_ADVLOCK(fffffd8075e1c870,fffffd807f7d55d0,8,ffff800027536090,50) at VOP_ADVLOCK+0x71 sys/kern/vfs_vops.c:628
sys_fcntl(ffff8000fffeed30,ffff800027536118,ffff800027536170) at sys_fcntl+0xad9
syscall(ffff8000275361e0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000275361e0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x5b3e7c18580, count: -10
ddb{0}> machine ddbcpu 1
Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp
x86_ipi_db(ffff800020cd8ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206
sched_idle(ffff800020cd8ff0) at sched_idle+0x417 sys/kern/kern_sched.c:178
end trace frame: 0x0, count: 10
ddb{1}> trace
x86_ipi_db(ffff800020cd8ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206
sched_idle(ffff800020cd8ff0) at sched_idle+0x417 sys/kern/kern_sched.c:178
end trace frame: 0x0, count: -5
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot found the following issue on:
HEAD commit: 12999fd17334 I'm a doofus, of course I need to use "write_..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=15d3adf9f00000
kernel config: https://syzkaller.appspot.com/x/.config?x=bf87b6915a88cd0d
dashboard link: https://syzkaller.appspot.com/bug?extid=c93afea6c27a3fa3af39
Unfortunately, I don't have any reproducer for this issue yet.
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+c93afe...@syzkaller.appspotmail.com
panic: kernel diagnostic assertion "TAILQ_EMPTY(&lock->lf_blkhd)" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/vfs_lockf.c", line 205
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*430357 35954 0 0 0x4000000 0 syz-executor.2
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff8259eac4) at panic+0x177 sys/kern/subr_prf.c:202
__assert(ffffffff82612e18,ffffffff8256ffc8,cd,ffffffff825f2f93) at __assert+0x25 sys/kern/subr_prf.c:161
lf_free(fffffd806f0883a8) at lf_free+0xe2 ls_rele sys/kern/vfs_lockf.c:152 [inline]
lf_free(fffffd806f0883a8) at lf_free+0xe2 sys/kern/vfs_lockf.c:208
lf_setlock(fffffd806f0883a8) at lf_setlock+0xb54
lf_advlock(ffff800000ce74a0,0,fffffd807f7d55d0,8,ffff800027536090,50) at lf_advlock+0x3a7 sys/kern/vfs_lockf.c:301
VOP_ADVLOCK(fffffd8075e1c870,fffffd807f7d55d0,8,ffff800027536090,50) at VOP_ADVLOCK+0x71 sys/kern/vfs_vops.c:628
sys_fcntl(ffff8000fffeed30,ffff800027536118,ffff800027536170) at sys_fcntl+0xad9
syscall(ffff8000275361e0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000275361e0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x5b3e7c18580, count: 5
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}>
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
*cpu0: kernel diagnostic assertion "TAILQ_EMPTY(&lock->lf_blkhd)" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/vfs_lockf.c", line 205
ddb{0}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff8259eac4) at panic+0x177 sys/kern/subr_prf.c:202
__assert(ffffffff82612e18,ffffffff8256ffc8,cd,ffffffff825f2f93) at __assert+0x25 sys/kern/subr_prf.c:161
lf_free(fffffd806f0883a8) at lf_free+0xe2 ls_rele sys/kern/vfs_lockf.c:152 [inline]
lf_free(fffffd806f0883a8) at lf_free+0xe2 sys/kern/vfs_lockf.c:208
lf_setlock(fffffd806f0883a8) at lf_setlock+0xb54
lf_advlock(ffff800000ce74a0,0,fffffd807f7d55d0,8,ffff800027536090,50) at lf_advlock+0x3a7 sys/kern/vfs_lockf.c:301
VOP_ADVLOCK(fffffd8075e1c870,fffffd807f7d55d0,8,ffff800027536090,50) at VOP_ADVLOCK+0x71 sys/kern/vfs_vops.c:628
sys_fcntl(ffff8000fffeed30,ffff800027536118,ffff800027536170) at sys_fcntl+0xad9
syscall(ffff8000275361e0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000275361e0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x5b3e7c18580, count: -10
ddb{0}> show registers
rdi 0
rsi 0x1
rbp 0xffff800027535d80
rbx 0xffffffff8297bc5f cpu_info_full_primary+0x2c5f
rdx 0xffff800000c049c0
rcx 0
rax 0xffff8000fffeed30
r8 0
r9 0x8080808080808080
r10 0x1842137bf3f6092f
r11 0x37a49192e7cb3971
r12 0xffffffff8297ba60 cpu_info_full_primary+0x2a60
r13 0
r14 0
r15 0x1
rip 0xffffffff8232f328 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff800027535d70
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb{0}> show proc
PROC (syz-executor.2) pid=430357 stat=onproc
flags process=0 proc=4000000<THREAD>
pri=32, usrpri=86, nice=20
forw=0xffffffffffffffff, list=0xffff8000fffef510,0xffffffff82a71a88
process=0xffff80002a5029a8 user=0xffff800027531000, vmspace=0xfffffd80678515e0
estcpu=36, cpticks=1, pctcpu=0.0
user=0, sys=1, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
35954 294520 84633 0 2 0 syz-executor.2
35954 156737 84633 0 3 0x4000080 lockf syz-executor.2
*35954 430357 84633 0 7 0x4000000 syz-executor.2
17914 478009 10186 0 2 0 syz-executor.0
17914 113534 10186 0 2 0x4000000 syz-executor.0
96985 416498 87753 0 3 0x80 nanoslp syz-executor.6
96985 370905 87753 0 3 0x4000080 lockf syz-executor.6
96985 233000 87753 0 3 0x4000080 fsleep syz-executor.6
96985 74698 87753 0 3 0x4000080 fsleep syz-executor.6
60109 56992 264 0 2 0x480 syz-executor.1
60109 161207 264 0 3 0x4000080 lockf syz-executor.1
60109 266763 264 0 3 0x4000080 fsleep syz-executor.1
84622 339869 15954 0 3 0x80 nanoslp syz-executor.4
84622 413171 15954 0 3 0x4000080 lockf syz-executor.4
84622 317506 15954 0 3 0x4000080 lockf syz-executor.4
84622 446770 15954 0 3 0x4000080 fsleep syz-executor.4
264 502427 18820 0 2 0x482 syz-executor.1
10186 46628 18820 0 3 0x82 nanoslp syz-executor.0
98456 214817 18820 0 3 0x82 piperd syz-executor.3
51595 329667 18820 0 3 0x82 piperd syz-executor.7
15954 243014 18820 0 2 0x482 syz-executor.4
84633 367068 18820 0 2 0x482 syz-executor.2
87753 507280 18820 0 3 0x82 nanoslp syz-executor.6
7727 459121 18820 0 2 0x2 syz-executor.5
8853 513935 0 0 3 0x14200 acct acct
20905 366283 0 0 3 0x14200 bored sosplice
18820 312450 46733 0 3 0x82 thrsleep syz-fuzzer
18820 409680 46733 0 2 0x4000482 syz-fuzzer
18820 274239 46733 0 3 0x4000082 thrsleep syz-fuzzer
18820 436334 46733 0 3 0x4000082 thrsleep syz-fuzzer
18820 424712 46733 0 3 0x4000082 nanoslp syz-fuzzer
18820 132682 46733 0 3 0x4000082 thrsleep syz-fuzzer
18820 145851 46733 0 3 0x4000082 kqread syz-fuzzer
18820 270692 46733 0 3 0x4000082 thrsleep syz-fuzzer
18820 270738 46733 0 3 0x4000082 thrsleep syz-fuzzer
46733 359143 79206 0 3 0x10008a sigsusp ksh
79206 287770 66627 0 3 0x9a kqread sshd
12984 271695 1 0 3 0x100083 ttyin getty
66627 424125 1 0 3 0x88 kqread sshd
76440 344505 62691 74 3 0x1100092 bpf pflogd
62691 41808 1 0 3 0x80 netio pflogd
15873 146798 70915 73 3 0x1100090 kqread syslogd
70915 193121 1 0 3 0x100082 netio syslogd
52239 412525 1 0 3 0x100080 kqread resolvd
80713 230132 4612 77 3 0x100092 kqread dhcpleased
21544 327590 4612 77 3 0x100092 kqread dhcpleased
4612 186375 1 0 3 0x80 kqread dhcpleased
12935 232482 0 0 3 0x14200 bored smr
2919 464982 0 0 2 0x14200 zerothread
54785 370691 0 0 3 0x14200 aiodoned aiodoned
56531 149883 0 0 3 0x14200 syncer update
67004 393576 0 0 3 0x14200 cleaner cleaner
88084 506249 0 0 3 0x14200 reaper reaper
17876 391294 0 0 3 0x14200 pgdaemon pagedaemon
53899 433765 0 0 3 0x14200 bored viomb
22098 162338 0 0 3 0x40014200 acpi0 acpi0
87404 321418 0 0 7 0x40014200 idle1
66807 368511 0 0 3 0x14200 bored softnet
53058 208227 0 0 3 0x14200 bored softnet
3392 218063 0 0 3 0x14200 bored softnet
20858 484123 0 0 3 0x14200 bored softnet
64923 414641 0 0 3 0x14200 bored systqmp
87547 131524 0 0 3 0x14200 bored systq
54168 271275 0 0 3 0x40014200 bored softclock
51283 22653 0 0 3 0x40014200 idle0
1 199828 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
Process 35954 (syz-executor.2) thread 0xffff8000fffeed30 (430357)
Process 17914 (syz-executor.0) thread 0xffff8000fffef510 (113534)
Process 7727 (syz-executor.5) thread 0xffff80002116fa48 (459121)
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10209 6510K 7367K 78643K 25577 0
pcb 13 14K 16K 78643K 845 0
rtable 191 15K 17K 78643K 1792 0
ifaddr 81 18K 21K 78643K 604 0
sysctl 2 0K 0K 78643K 2 0
counters 52 35K 36K 78643K 248 0
ioctlops 0 0K 4K 78643K 3582 0
iov 0 0K 24K 78643K 2151 0
mount 1 1K 1K 78643K 1 0
log 0 0K 0K 78643K 5 0
vnodes 1455 91K 91K 78643K 7951 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 9K 78643K 102 0
VM map 2 1K 1K 78643K 2 0
sem 12 0K 0K 78643K 2018 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1697 195K 286K 78643K 12548 0
file desc 15 53K 93K 78643K 10281 0
sigio 0 0K 0K 78643K 150 0
proc 71 91K 115K 78643K 1805 0
subproc 104 6K 6K 78643K 481 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 283 0
in_multi 77 5K 6K 78643K 504 0
ether_multi 1 0K 0K 78643K 33 0
mrt 1 0K 0K 78643K 25 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 193 864K 864K 78643K 193 0
exec 0 0K 2K 78643K 2548 0
pfkey data 0 0K 0K 78643K 5 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 356 428K 444K 78643K 60628 0
UVM aobj 131 6K 6K 78643K 139 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 153 0
NDP 12 0K 2K 78643K 187 0
temp 145 4762K 5786K 78643K 106921 0
kqueue 12 18K 26K 78643K 623 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
plcache 128 22 0 0 1 0 1 1 0 8 0
rtpcb 120 576 0 573 5 4 1 3 0 8 0
rtentry 112 629 0 548 4 0 4 4 0 8 0
unpcb 136 6932 0 6917 93 92 1 8 0 8 0
syncache 296 32 0 32 10 10 0 1 0 8 0
tcpqe 32 212 0 212 5 5 0 2 0 8 0
tcpcb 736 2540 0 2535 102 101 1 8 0 8 0
arp 120 139 0 125 1 0 1 1 0 8 0
inpcb 312 7227 0 7220 172 166 6 16 0 8 5
nd6 48 116 0 98 1 0 1 1 0 8 0
pkpcb 40 15 0 15 4 4 0 1 0 8 0
kcovpl 48 37 0 29 1 0 1 1 0 8 0
ppxss 1248 30 0 30 8 8 0 1 0 8 0
pffrag 232 34 0 32 6 5 1 1 0 482 0
pffrnode 88 34 0 32 6 5 1 1 0 8 0
pffrent 40 80 0 78 8 7 1 1 0 8 0
pfosfp 40 1428 0 1005 5 0 5 5 0 8 0
pfosfpen 112 1428 0 714 21 0 21 21 0 8 0
pfrktable 1344 1 0 0 1 0 1 1 0 8 0
pfstitem 24 23 0 21 1 0 1 1 0 8 0
pfstkey 112 23 0 21 1 0 1 1 0 8 0
pfstate 336 23 0 21 2 1 1 2 0 8 0
pfrule 1360 57 0 50 2 1 1 2 0 8 0
rttmr 64 5 0 5 1 1 0 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 2125 0 1765 46 17 29 29 0 8 2
art_table 32 2126 0 1765 4 0 4 4 0 8 0
art_node 16 625 0 555 1 0 1 1 0 8 0
sysvmsgpl 40 40 0 14 1 0 1 1 0 8 0
semupl 112 8 0 8 1 1 0 1 0 8 0
semapl 112 2011 0 2001 1 0 1 1 0 8 0
shmpl 112 136 0 8 4 0 4 4 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 16968 0 15483 94 0 94 94 0 8 0
ffsino 272 16968 0 15483 100 0 100 100 0 8 0
nchpl 144 30371 0 28723 63 0 63 63 0 8 0
uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0
vnodes 224 5926 0 0 349 0 349 349 0 8 0
namei 1024 118452 0 118450 3 2 1 1 0 8 0
percpumem 16 136 0 98 1 0 1 1 0 8 0
vcpupl 2048 22 0 0 3 0 3 3 0 8 0
vmpool 560 50 0 28 3 1 2 2 0 8 0
kstatmem 264 220 0 196 9 6 3 3 0 8 0
scsiplug 72 5 0 5 2 2 0 1 0 8 0
scxspl 216 84400 0 84400 15 14 1 8 0 8 1
plimitpl 152 1286 0 1271 1 0 1 1 0 8 0
sigapl 424 10554 0 10507 10 3 7 8 0 8 0
futexpl 64 99813 0 99809 3 2 1 1 0 8 0
knotepl 120 743 0 0 11 2 9 11 0 8 0
kqueuepl 216 1420 0 1412 19 18 1 5 0 8 0
pipepl 336 1516 0 1487 48 45 3 8 0 8 0
fdescpl 496 10514 0 10486 5 1 4 5 0 8 0
filepl 152 74469 0 74213 160 145 15 22 0 8 4
lockfpl 104 20367 0 20355 17 16 1 4 0 8 0
lockfspl 48 2725 0 2719 2 1 1 2 0 8 0
sessionpl 144 53 0 36 1 0 1 1 0 8 0
pgrppl 48 135 0 118 1 0 1 1 0 8 0
ucredpl 96 22521 0 22504 1 0 1 1 0 8 0
zombiepl 144 10507 0 10507 1 0 1 1 0 8 1
processpl 1064 10554 0 10507 5 0 5 5 0 8 0
procpl 672 29106 0 29040 24 17 7 9 0 8 0
srpgc 96 32 0 32 15 14 1 1 0 8 1
sosppl 168 31 0 31 9 9 0 1 0 8 0
sockpl 480 14758 0 14733 460 448 12 29 0 8 8
mcl64k 65536 17 0 0 3 0 3 3 0 8 0
mcl16k 16384 9 0 0 2 0 2 2 0 8 0
mcl12k 12288 6 0 0 1 0 1 1 0 8 0
mcl9k 9216 9 0 0 1 0 1 1 0 8 0
mcl8k 8192 15 0 0 2 0 2 2 0 8 0
mcl4k 4096 17 0 0 3 0 3 3 0 8 0
mcl2k2 2112 7 0 0 1 0 1 1 0 8 0
mcl2k 2048 340 0 0 36 7 29 36 0 8 0
mtagpl 96 711 0 0 14 0 14 14 0 8 0
mbufpl 256 1377 0 0 54 0 54 54 0 8 0
bufpl 288 18175 0 11843 453 0 453 453 0 8 0
anonpl 24 1969556 0 1954947 227 115 112 129 0 186 0
amapchunkpl 152 175370 0 174712 75 45 30 40 0 158 0
amappl16 200 24894 0 24311 99 67 32 43 0 8 0
amappl15 192 2094 0 2091 1 0 1 1 0 8 0
amappl14 184 1256 0 1252 1 0 1 1 0 8 0
amappl13 176 1269 0 1264 1 0 1 1 0 8 0
amappl12 168 1718 0 1712 1 0 1 1 0 8 0
amappl11 160 767 0 747 1 0 1 1 0 8 0
amappl10 152 1931 0 1920 1 0 1 1 0 8 0
amappl9 144 1608 0 1599 1 0 1 1 0 8 0
amappl8 136 1974 0 1863 4 0 4 4 0 8 0
amappl7 128 910 0 900 1 0 1 1 0 8 0
amappl6 120 1502 0 1469 3 1 2 2 0 8 0
amappl5 112 9782 0 9767 1 0 1 1 0 8 0
amappl4 104 2936 0 2905 2 1 1 2 0 8 0
amappl3 96 33105 0 33049 2 0 2 2 0 8 0
amappl2 88 12727 0 12663 3 1 2 3 0 8 0
amappl1 80 251010 0 250349 22 6 16 20 0 8 0
amappl 88 59439 0 59239 6 1 5 5 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 72 138 0 8 3 0 3 3 0 8 0
uaddrrnd 24 10564 0 10514 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 10564 0 10514 1 0 1 1 0 8 0
vmmpekpl 168 78298 0 78229 4 0 4 4 0 8 0
vmmpepl 168 1018074 0 1015413 275 143 132 145 0 357 0
vmsppl 368 10563 0 10514 6 1 5 5 0 8 0
rwobjpl 56 251339 0 243572 119 8 111 113 0 8 0
pdppl 4096 21135 0 21050 611 520 91 93 0 8 6
pvpl 32 3965285 0 3945906 397 208 189 257 0 265 0
pmappl 248 10563 0 10514 5 1 4 4 0 8 0
extentpl 40 58 0 38 1 0 1 1 0 8 0
phpool 112 1749 0 863 27 1 26 26 0 8 0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff8259eac4) at panic+0x177 sys/kern/subr_prf.c:202
__assert(ffffffff82612e18,ffffffff8256ffc8,cd,ffffffff825f2f93) at __assert+0x25 sys/kern/subr_prf.c:161
lf_free(fffffd806f0883a8) at lf_free+0xe2 ls_rele sys/kern/vfs_lockf.c:152 [inline]
lf_free(fffffd806f0883a8) at lf_free+0xe2 sys/kern/vfs_lockf.c:208
lf_setlock(fffffd806f0883a8) at lf_setlock+0xb54
lf_advlock(ffff800000ce74a0,0,fffffd807f7d55d0,8,ffff800027536090,50) at lf_advlock+0x3a7 sys/kern/vfs_lockf.c:301
VOP_ADVLOCK(fffffd8075e1c870,fffffd807f7d55d0,8,ffff800027536090,50) at VOP_ADVLOCK+0x71 sys/kern/vfs_vops.c:628
sys_fcntl(ffff8000fffeed30,ffff800027536118,ffff800027536170) at sys_fcntl+0xad9
syscall(ffff8000275361e0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000275361e0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x5b3e7c18580, count: -10
ddb{0}> machine ddbcpu 1
Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp
x86_ipi_db(ffff800020cd8ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206
sched_idle(ffff800020cd8ff0) at sched_idle+0x417 sys/kern/kern_sched.c:178
end trace frame: 0x0, count: 10
ddb{1}> trace
x86_ipi_db(ffff800020cd8ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206
sched_idle(ffff800020cd8ff0) at sched_idle+0x417 sys/kern/kern_sched.c:178
end trace frame: 0x0, count: -5
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot
May 27, 2022, 2:59:22 AM5/27/22
to syzkaller-o...@googlegroups.com
syzbot has found a reproducer for the following issue on:
HEAD commit: 12999fd17334 I'm a doofus, of course I need to use "write_..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=13228475f00000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=109c58f5f00000
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+c93afe...@syzkaller.appspotmail.com
panic: kernel diagnostic assertion "TAILQ_EMPTY(&lock->lf_blkhd)" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/vfs_lockf.c", line 205
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*248667 45803 0 0x2 0x4000000 1 syz-executor1646560472
513316 36606 0 0x14000 0x40000200 0 softclock
lf_free(fffffd806f00d820) at lf_free+0xe2 sys/kern/vfs_lockf.c:208
lf_setlock(fffffd806f00d820) at lf_setlock+0xb54
lf_advlock(ffff800000bd5ba0,0,fffffd806f9e35e0,8,ffff8000211d01e0,50) at lf_advlock+0x3a7 sys/kern/vfs_lockf.c:301
VOP_ADVLOCK(fffffd806f2f1168,fffffd806f9e35e0,8,ffff8000211d01e0,50) at VOP_ADVLOCK+0x71 sys/kern/vfs_vops.c:628
sys_fcntl(ffff8000211337a8,ffff8000211d0268,ffff8000211d02c0) at sys_fcntl+0xad9
syscall(ffff8000211d0330) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000211d0330) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
*cpu1: kernel diagnostic assertion "TAILQ_EMPTY(&lock->lf_blkhd)" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/vfs_lockf.c", line 205
ddb{1}> trace
lf_free(fffffd806f00d820) at lf_free+0xe2 sys/kern/vfs_lockf.c:208
lf_setlock(fffffd806f00d820) at lf_setlock+0xb54
lf_advlock(ffff800000bd5ba0,0,fffffd806f9e35e0,8,ffff8000211d01e0,50) at lf_advlock+0x3a7 sys/kern/vfs_lockf.c:301
VOP_ADVLOCK(fffffd806f2f1168,fffffd806f9e35e0,8,ffff8000211d01e0,50) at VOP_ADVLOCK+0x71 sys/kern/vfs_vops.c:628
sys_fcntl(ffff8000211337a8,ffff8000211d0268,ffff8000211d02c0) at sys_fcntl+0xad9
syscall(ffff8000211d0330) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000211d0330) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
ddb{1}> show registers
rdi 0
rsi 0x1
rbp 0xffff8000211cfed0
rbx 0xffff800020cd9c5f
rdx 0x3fd
rcx 0
rax 0x95
r8 0x101010101010101
r9 0x8080808080808080
r10 0x8f59cff0ae48494c
r11 0x4b323472889c2c58
r12 0xffff800020cd9a60
PROC (syz-executor1646560472) pid=248667 stat=onproc
flags process=2<EXEC> proc=4000000<THREAD>
pri=51, usrpri=51, nice=20
forw=0xffffffffffffffff, list=0xffff800021133508,0xffffffff82a71a88
process=0xffff8000ffff2150 user=0xffff8000211cb000, vmspace=0xfffffd806ee28cf8
estcpu=1, cpticks=1, pctcpu=0.0
user=0, sys=1, intr=0
ddb{1}> ps
45803 412490 8746 0 3 0x4000082 lockf syz-executor1646560472
*45803 248667 8746 0 7 0x4000002 syz-executor1646560472
8746 428688 85654 0 3 0x10008a sigsusp ksh
85654 361334 6831 0 3 0x9a kqread sshd
82937 443237 1 0 3 0x100083 ttyin getty
6831 465766 1 0 3 0x88 kqread sshd
38156 297837 94233 74 3 0x1100092 bpf pflogd
94233 108865 1 0 3 0x80 netio pflogd
25665 46763 48807 73 3 0x1100090 kqread syslogd
48807 264616 1 0 3 0x100082 netio syslogd
28566 9258 1 0 3 0x100080 kqread resolvd
43316 269921 46340 77 3 0x100092 kqread dhcpleased
67919 126187 46340 77 3 0x100092 kqread dhcpleased
46340 11628 1 0 3 0x80 kqread dhcpleased
89739 517763 0 0 3 0x14200 bored smr
78840 499733 0 0 3 0x14200 pgzero zerothread
76184 108284 0 0 3 0x14200 aiodoned aiodoned
82654 166304 0 0 3 0x14200 syncer update
60371 207094 0 0 3 0x14200 cleaner cleaner
1336 348496 0 0 3 0x14200 reaper reaper
33450 131860 0 0 3 0x14200 pgdaemon pagedaemon
53770 402640 0 0 3 0x14200 bored viomb
484 482512 0 0 3 0x40014200 acpi0 acpi0
94375 390900 0 0 3 0x40014200 idle1
8613 461462 0 0 3 0x14200 bored softnet
92139 109372 0 0 3 0x14200 bored softnet
89291 80560 0 0 3 0x14200 bored softnet
21318 245210 0 0 3 0x14200 bored softnet
32096 485507 0 0 3 0x14200 bored systqmp
87250 282009 0 0 3 0x14200 bored systq
36606 513316 0 0 7 0x40014200 softclock
18575 14753 0 0 3 0x40014200 idle0
1 353896 0 0 3 0x82 wait init
Process 45803 (syz-executor1646560472) thread 0xffff8000211337a8 (248667)
exclusive rwlock lockflk r = 0 (0xffffffff829ae930)
#0 witness_lock+0x44d
#1 lf_advlock+0x189 sys/kern/vfs_lockf.c:263
#2 VOP_ADVLOCK+0x71 sys/kern/vfs_vops.c:628
#3 sys_fcntl+0xad9
#4 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#4 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#5 Xsyscall+0x128
ddb{1}> show malloc
pcb 13 8K 8K 78643K 13 0
rtable 58 1K 2K 78643K 108 0
ifaddr 29 8K 8K 78643K 32 0
counters 40 33K 33K 78643K 40 0
ioctlops 0 0K 4K 78643K 1479 0
proc 67 91K 91K 78643K 282 0
ether_multi 1 0K 0K 78643K 1 0
exec 0 0K 2K 78643K 432 0
UVM aobj 3 2K 2K 78643K 3 0
temp 23 4713K 4777K 78643K 2516 0
kqueue 11 16K 18K 78643K 24 0
rtentry 112 23 0 1 1 0 1 1 0 8 0
unpcb 136 35 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 120 2 0 0 1 0 1 1 0 8 0
inpcb 312 32 0 26 1 0 1 1 0 8 0
pfstkey 112 9 0 2 1 0 1 1 0 8 0
pfstate 336 9 0 2 1 0 1 1 0 8 0
pfrule 1360 21 0 16 2 1 1 2 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 272 1425 0 39 93 0 93 93 0 8 0
nchpl 144 1614 0 49 58 0 58 58 0 8 0
uvmvnodes 80 1435 0 0 30 0 30 30 0 8 0
vnodes 224 1435 0 0 85 0 85 85 0 8 0
namei 1024 4476 0 4476 2 1 1 1 0 8 1
percpumem 16 32 0 0 1 0 1 1 0 8 0
kstatmem 264 8 0 0 1 0 1 1 0 8 0
scxspl 216 4067 0 4067 10 4 6 8 0 8 6
plimitpl 152 16 0 9 1 0 1 1 0 8 0
sigapl 424 323 0 291 5 1 4 5 0 8 0
knotepl 120 50 0 0 2 0 2 2 0 8 0
kqueuepl 216 20 0 13 1 0 1 1 0 8 0
pipepl 336 86 0 83 2 1 1 1 0 8 0
fdescpl 496 306 0 291 3 0 3 3 0 8 0
filepl 152 1185 0 1125 3 0 3 3 0 8 0
lockfpl 104 11 0 6 1 0 1 1 0 8 0
lockfspl 48 5 0 2 1 0 1 1 0 8 0
sessionpl 144 18 0 9 1 0 1 1 0 8 0
pgrppl 48 18 0 9 1 0 1 1 0 8 0
ucredpl 96 72 0 60 1 0 1 1 0 8 0
zombiepl 144 291 0 291 2 1 1 1 0 8 1
processpl 1064 323 0 291 3 0 3 3 0 8 0
procpl 672 325 0 291 4 1 3 4 0 8 0
sockpl 480 84 0 60 5 1 4 4 0 8 0
mcl8k 8192 4 0 0 1 0 1 1 0 8 0
mcl4k 4096 5 0 0 1 0 1 1 0 8 0
mcl2k 2048 64 0 0 8 0 8 8 0 8 0
mtagpl 96 3 0 0 1 0 1 1 0 8 0
mbufpl 256 115 0 0 7 0 7 7 0 8 0
bufpl 288 2021 0 90 138 0 138 138 0 8 0
anonpl 24 39056 0 36911 18 4 14 15 0 186 1
amapchunkpl 152 2868 0 2761 7 2 5 6 0 158 0
amappl16 200 97 0 92 1 0 1 1 0 8 0
amappl15 192 1 0 0 1 0 1 1 0 8 0
amappl14 184 1 0 1 1 1 0 1 0 8 0
amappl13 176 34 0 33 2 1 1 1 0 8 0
amappl12 168 3 0 3 2 1 1 1 0 8 1
amappl11 160 66 0 49 1 0 1 1 0 8 0
amappl10 152 3 0 1 1 0 1 1 0 8 0
amappl9 144 497 0 495 1 0 1 1 0 8 0
amappl8 136 365 0 363 2 1 1 1 0 8 0
amappl7 128 52 0 49 1 0 1 1 0 8 0
amappl6 120 106 0 96 1 0 1 1 0 8 0
amappl5 112 91 0 79 1 0 1 1 0 8 0
amappl4 104 629 0 608 1 0 1 1 0 8 0
amappl3 96 398 0 373 1 0 1 1 0 8 0
amappl2 88 454 0 416 1 0 1 1 0 8 0
amappl1 80 9451 0 9025 12 2 10 10 0 8 0
amappl 88 1278 0 1235 2 1 1 2 0 92 0
uaddrrnd 24 306 0 291 1 0 1 1 0 8 0
vmmpekpl 168 6217 0 6206 1 0 1 1 0 8 0
vmmpepl 168 27089 0 26176 45 3 42 42 0 357 2
vmsppl 368 305 0 291 2 0 2 2 0 8 0
rwobjpl 56 9732 0 7700 30 0 30 30 0 8 0
pdppl 4096 619 0 582 57 20 37 45 0 8 0
pvpl 32 131573 0 127433 43 7 36 36 0 265 2
pmappl 248 305 0 291 2 0 2 2 0 8 0
ddb{1}> machine ddbcpu 0
__mp_lock(ffffffff82a369e0) at __mp_lock+0x122 sys/kern/kern_lock.c:147
__mp_acquire_count(ffffffff82a369e0,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227
mi_switch() at mi_switch+0x3d3 sys/kern/sched_bsd.c:416
sleep_finish(ffff8000210f5158,1) at sleep_finish+0x180 sys/kern/kern_synch.c:420
softclock_thread(ffff8000210e9500) at softclock_thread+0xd9 sys/kern/kern_timeout.c:797
end trace frame: 0x0, count: 7
ddb{0}> trace
x86_ipi_db(ffffffff8297aff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393
__mp_lock(ffffffff82a369e0) at __mp_lock+0x122 sys/kern/kern_lock.c:147
__mp_acquire_count(ffffffff82a369e0,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227
mi_switch() at mi_switch+0x3d3 sys/kern/sched_bsd.c:416
sleep_finish(ffff8000210f5158,1) at sleep_finish+0x180 sys/kern/kern_synch.c:420
softclock_thread(ffff8000210e9500) at softclock_thread+0xd9 sys/kern/kern_timeout.c:797
end trace frame: 0x0, count: -8
lf_free(fffffd806f00d820) at lf_free+0xe2 sys/kern/vfs_lockf.c:208
lf_setlock(fffffd806f00d820) at lf_setlock+0xb54
lf_advlock(ffff800000bd5ba0,0,fffffd806f9e35e0,8,ffff8000211d01e0,50) at lf_advlock+0x3a7 sys/kern/vfs_lockf.c:301
VOP_ADVLOCK(fffffd806f2f1168,fffffd806f9e35e0,8,ffff8000211d01e0,50) at VOP_ADVLOCK+0x71 sys/kern/vfs_vops.c:628
sys_fcntl(ffff8000211337a8,ffff8000211d0268,ffff8000211d02c0) at sys_fcntl+0xad9
syscall(ffff8000211d0330) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000211d0330) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
ddb{1}> trace
lf_free(fffffd806f00d820) at lf_free+0xe2 sys/kern/vfs_lockf.c:208
lf_setlock(fffffd806f00d820) at lf_setlock+0xb54
lf_advlock(ffff800000bd5ba0,0,fffffd806f9e35e0,8,ffff8000211d01e0,50) at lf_advlock+0x3a7 sys/kern/vfs_lockf.c:301
VOP_ADVLOCK(fffffd806f2f1168,fffffd806f9e35e0,8,ffff8000211d01e0,50) at VOP_ADVLOCK+0x71 sys/kern/vfs_vops.c:628
sys_fcntl(ffff8000211337a8,ffff8000211d0268,ffff8000211d02c0) at sys_fcntl+0xad9
syscall(ffff8000211d0330) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000211d0330) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
ddb{1}>
HEAD commit: 12999fd17334 I'm a doofus, of course I need to use "write_..
git tree: openbsd
kernel config: https://syzkaller.appspot.com/x/.config?x=bf87b6915a88cd0d
dashboard link: https://syzkaller.appspot.com/bug?extid=c93afea6c27a3fa3af39
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17cbedf3f00000
dashboard link: https://syzkaller.appspot.com/bug?extid=c93afea6c27a3fa3af39
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=109c58f5f00000
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+c93afe...@syzkaller.appspotmail.com
panic: kernel diagnostic assertion "TAILQ_EMPTY(&lock->lf_blkhd)" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/vfs_lockf.c", line 205
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
513316 36606 0 0x14000 0x40000200 0 softclock
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff8259eac4) at panic+0x177 sys/kern/subr_prf.c:202
__assert(ffffffff82612e18,ffffffff8256ffc8,cd,ffffffff825f2f93) at __assert+0x25 sys/kern/subr_prf.c:161
lf_free(fffffd806f00d820) at lf_free+0xe2 ls_rele sys/kern/vfs_lockf.c:152 [inline]
panic(ffffffff8259eac4) at panic+0x177 sys/kern/subr_prf.c:202
__assert(ffffffff82612e18,ffffffff8256ffc8,cd,ffffffff825f2f93) at __assert+0x25 sys/kern/subr_prf.c:161
lf_free(fffffd806f00d820) at lf_free+0xe2 sys/kern/vfs_lockf.c:208
lf_setlock(fffffd806f00d820) at lf_setlock+0xb54
lf_advlock(ffff800000bd5ba0,0,fffffd806f9e35e0,8,ffff8000211d01e0,50) at lf_advlock+0x3a7 sys/kern/vfs_lockf.c:301
VOP_ADVLOCK(fffffd806f2f1168,fffffd806f9e35e0,8,ffff8000211d01e0,50) at VOP_ADVLOCK+0x71 sys/kern/vfs_vops.c:628
sys_fcntl(ffff8000211337a8,ffff8000211d0268,ffff8000211d02c0) at sys_fcntl+0xad9
syscall(ffff8000211d0330) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000211d0330) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xfe52fd01790, count: 5
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{1}>
reports. Insufficient info makes it difficult to find and fix bugs.
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
*cpu1: kernel diagnostic assertion "TAILQ_EMPTY(&lock->lf_blkhd)" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/vfs_lockf.c", line 205
ddb{1}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff8259eac4) at panic+0x177 sys/kern/subr_prf.c:202
__assert(ffffffff82612e18,ffffffff8256ffc8,cd,ffffffff825f2f93) at __assert+0x25 sys/kern/subr_prf.c:161
lf_free(fffffd806f00d820) at lf_free+0xe2 ls_rele sys/kern/vfs_lockf.c:152 [inline]
panic(ffffffff8259eac4) at panic+0x177 sys/kern/subr_prf.c:202
__assert(ffffffff82612e18,ffffffff8256ffc8,cd,ffffffff825f2f93) at __assert+0x25 sys/kern/subr_prf.c:161
lf_free(fffffd806f00d820) at lf_free+0xe2 sys/kern/vfs_lockf.c:208
lf_setlock(fffffd806f00d820) at lf_setlock+0xb54
lf_advlock(ffff800000bd5ba0,0,fffffd806f9e35e0,8,ffff8000211d01e0,50) at lf_advlock+0x3a7 sys/kern/vfs_lockf.c:301
VOP_ADVLOCK(fffffd806f2f1168,fffffd806f9e35e0,8,ffff8000211d01e0,50) at VOP_ADVLOCK+0x71 sys/kern/vfs_vops.c:628
sys_fcntl(ffff8000211337a8,ffff8000211d0268,ffff8000211d02c0) at sys_fcntl+0xad9
syscall(ffff8000211d0330) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000211d0330) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xfe52fd01790, count: -10
end of kernel
ddb{1}> show registers
rdi 0
rsi 0x1
rbp 0xffff8000211cfed0
rbx 0xffff800020cd9c5f
rdx 0x3fd
rcx 0
rax 0x95
r8 0x101010101010101
r9 0x8080808080808080
r10 0x8f59cff0ae48494c
r11 0x4b323472889c2c58
r12 0xffff800020cd9a60
r13 0
r14 0
r15 0x1
rip 0xffffffff8232f328 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff8000211cfec0
r14 0
r15 0x1
rip 0xffffffff8232f328 db_enter+0x18
cs 0x8
rflags 0x246
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb{1}> show proc
db_enter+0x18: addq $0x8,%rsp
PROC (syz-executor1646560472) pid=248667 stat=onproc
flags process=2<EXEC> proc=4000000<THREAD>
pri=51, usrpri=51, nice=20
forw=0xffffffffffffffff, list=0xffff800021133508,0xffffffff82a71a88
process=0xffff8000ffff2150 user=0xffff8000211cb000, vmspace=0xfffffd806ee28cf8
estcpu=1, cpticks=1, pctcpu=0.0
user=0, sys=1, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
45803 181252 8746 0 2 0x2 syz-executor1646560472
45803 412490 8746 0 3 0x4000082 lockf syz-executor1646560472
*45803 248667 8746 0 7 0x4000002 syz-executor1646560472
8746 428688 85654 0 3 0x10008a sigsusp ksh
85654 361334 6831 0 3 0x9a kqread sshd
82937 443237 1 0 3 0x100083 ttyin getty
6831 465766 1 0 3 0x88 kqread sshd
38156 297837 94233 74 3 0x1100092 bpf pflogd
94233 108865 1 0 3 0x80 netio pflogd
25665 46763 48807 73 3 0x1100090 kqread syslogd
48807 264616 1 0 3 0x100082 netio syslogd
28566 9258 1 0 3 0x100080 kqread resolvd
43316 269921 46340 77 3 0x100092 kqread dhcpleased
67919 126187 46340 77 3 0x100092 kqread dhcpleased
46340 11628 1 0 3 0x80 kqread dhcpleased
89739 517763 0 0 3 0x14200 bored smr
78840 499733 0 0 3 0x14200 pgzero zerothread
76184 108284 0 0 3 0x14200 aiodoned aiodoned
82654 166304 0 0 3 0x14200 syncer update
60371 207094 0 0 3 0x14200 cleaner cleaner
1336 348496 0 0 3 0x14200 reaper reaper
33450 131860 0 0 3 0x14200 pgdaemon pagedaemon
53770 402640 0 0 3 0x14200 bored viomb
484 482512 0 0 3 0x40014200 acpi0 acpi0
94375 390900 0 0 3 0x40014200 idle1
8613 461462 0 0 3 0x14200 bored softnet
92139 109372 0 0 3 0x14200 bored softnet
89291 80560 0 0 3 0x14200 bored softnet
21318 245210 0 0 3 0x14200 bored softnet
32096 485507 0 0 3 0x14200 bored systqmp
87250 282009 0 0 3 0x14200 bored systq
36606 513316 0 0 7 0x40014200 softclock
18575 14753 0 0 3 0x40014200 idle0
1 353896 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
Process 45803 (syz-executor1646560472) thread 0xffff8000211337a8 (248667)
exclusive rwlock lockflk r = 0 (0xffffffff829ae930)
#0 witness_lock+0x44d
#1 lf_advlock+0x189 sys/kern/vfs_lockf.c:263
#2 VOP_ADVLOCK+0x71 sys/kern/vfs_vops.c:628
#3 sys_fcntl+0xad9
#4 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#4 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#5 Xsyscall+0x128
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10153 6455K 6456K 78643K 11243 0
pcb 13 8K 8K 78643K 13 0
rtable 58 1K 2K 78643K 108 0
ifaddr 29 8K 8K 78643K 32 0
counters 40 33K 33K 78643K 40 0
ioctlops 0 0K 4K 78643K 1479 0
mount 1 1K 1K 78643K 1 0
log 0 0K 0K 78643K 5 0
vnodes 1167 73K 73K 78643K 1180 0
log 0 0K 0K 78643K 5 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 1697 195K 286K 78643K 12548 0
file desc 2 2K 3K 78643K 4 0
ACPI 1697 195K 286K 78643K 12548 0
proc 67 91K 91K 78643K 282 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 31 148K 148K 78643K 31 0
MSDOSFS mount 1 16K 16K 78643K 1 0
exec 0 0K 2K 78643K 432 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 62 3K 5K 78643K 1559 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 aobj 3 2K 2K 78643K 3 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
NDP 4 0K 0K 78643K 4 0
crypto data 1 1K 1K 78643K 1 0
temp 23 4713K 4777K 78643K 2516 0
kqueue 11 16K 18K 78643K 24 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
plcache 128 22 0 0 1 0 1 1 0 8 0
rtpcb 120 17 0 14 1 0 1 1 0 8 0
plcache 128 22 0 0 1 0 1 1 0 8 0
rtentry 112 23 0 1 1 0 1 1 0 8 0
unpcb 136 35 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 120 2 0 0 1 0 1 1 0 8 0
inpcb 312 32 0 26 1 0 1 1 0 8 0
pfosfp 40 1428 0 1005 5 0 5 5 0 8 0
pfosfpen 112 1428 0 714 21 0 21 21 0 8 0
pfstitem 24 9 0 2 1 0 1 1 0 8 0
pfosfpen 112 1428 0 714 21 0 21 21 0 8 0
pfstkey 112 9 0 2 1 0 1 1 0 8 0
pfstate 336 9 0 2 1 0 1 1 0 8 0
pfrule 1360 21 0 16 2 1 1 2 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 1425 0 39 87 0 87 87 0 8 0
ffsino 272 1425 0 39 93 0 93 93 0 8 0
nchpl 144 1614 0 49 58 0 58 58 0 8 0
uvmvnodes 80 1435 0 0 30 0 30 30 0 8 0
vnodes 224 1435 0 0 85 0 85 85 0 8 0
namei 1024 4476 0 4476 2 1 1 1 0 8 1
percpumem 16 32 0 0 1 0 1 1 0 8 0
kstatmem 264 8 0 0 1 0 1 1 0 8 0
scxspl 216 4067 0 4067 10 4 6 8 0 8 6
plimitpl 152 16 0 9 1 0 1 1 0 8 0
sigapl 424 323 0 291 5 1 4 5 0 8 0
knotepl 120 50 0 0 2 0 2 2 0 8 0
kqueuepl 216 20 0 13 1 0 1 1 0 8 0
pipepl 336 86 0 83 2 1 1 1 0 8 0
fdescpl 496 306 0 291 3 0 3 3 0 8 0
filepl 152 1185 0 1125 3 0 3 3 0 8 0
lockfpl 104 11 0 6 1 0 1 1 0 8 0
lockfspl 48 5 0 2 1 0 1 1 0 8 0
sessionpl 144 18 0 9 1 0 1 1 0 8 0
pgrppl 48 18 0 9 1 0 1 1 0 8 0
ucredpl 96 72 0 60 1 0 1 1 0 8 0
zombiepl 144 291 0 291 2 1 1 1 0 8 1
processpl 1064 323 0 291 3 0 3 3 0 8 0
procpl 672 325 0 291 4 1 3 4 0 8 0
sockpl 480 84 0 60 5 1 4 4 0 8 0
mcl8k 8192 4 0 0 1 0 1 1 0 8 0
mcl4k 4096 5 0 0 1 0 1 1 0 8 0
mcl2k 2048 64 0 0 8 0 8 8 0 8 0
mtagpl 96 3 0 0 1 0 1 1 0 8 0
mbufpl 256 115 0 0 7 0 7 7 0 8 0
bufpl 288 2021 0 90 138 0 138 138 0 8 0
anonpl 24 39056 0 36911 18 4 14 15 0 186 1
amapchunkpl 152 2868 0 2761 7 2 5 6 0 158 0
amappl16 200 97 0 92 1 0 1 1 0 8 0
amappl15 192 1 0 0 1 0 1 1 0 8 0
amappl14 184 1 0 1 1 1 0 1 0 8 0
amappl13 176 34 0 33 2 1 1 1 0 8 0
amappl12 168 3 0 3 2 1 1 1 0 8 1
amappl11 160 66 0 49 1 0 1 1 0 8 0
amappl10 152 3 0 1 1 0 1 1 0 8 0
amappl9 144 497 0 495 1 0 1 1 0 8 0
amappl8 136 365 0 363 2 1 1 1 0 8 0
amappl7 128 52 0 49 1 0 1 1 0 8 0
amappl6 120 106 0 96 1 0 1 1 0 8 0
amappl5 112 91 0 79 1 0 1 1 0 8 0
amappl4 104 629 0 608 1 0 1 1 0 8 0
amappl3 96 398 0 373 1 0 1 1 0 8 0
amappl2 88 454 0 416 1 0 1 1 0 8 0
amappl1 80 9451 0 9025 12 2 10 10 0 8 0
amappl 88 1278 0 1235 2 1 1 2 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
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
uaddrrnd 24 306 0 291 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 306 0 291 1 0 1 1 0 8 0
vmmpekpl 168 6217 0 6206 1 0 1 1 0 8 0
vmmpepl 168 27089 0 26176 45 3 42 42 0 357 2
vmsppl 368 305 0 291 2 0 2 2 0 8 0
rwobjpl 56 9732 0 7700 30 0 30 30 0 8 0
pdppl 4096 619 0 582 57 20 37 45 0 8 0
pvpl 32 131573 0 127433 43 7 36 36 0 265 2
pmappl 248 305 0 291 2 0 2 2 0 8 0
extentpl 40 58 0 38 1 0 1 1 0 8 0
phpool 112 416 0 25 12 0 12 12 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp
x86_ipi_db(ffffffff8297aff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
__mp_lock(ffffffff82a369e0) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
__mp_lock(ffffffff82a369e0) at __mp_lock+0x122 sys/kern/kern_lock.c:147
__mp_acquire_count(ffffffff82a369e0,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227
mi_switch() at mi_switch+0x3d3 sys/kern/sched_bsd.c:416
sleep_finish(ffff8000210f5158,1) at sleep_finish+0x180 sys/kern/kern_synch.c:420
softclock_thread(ffff8000210e9500) at softclock_thread+0xd9 sys/kern/kern_timeout.c:797
end trace frame: 0x0, count: 7
ddb{0}> trace
x86_ipi_db(ffffffff8297aff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
__mp_lock(ffffffff82a369e0) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
__mp_lock(ffffffff82a369e0) at __mp_lock+0x122 sys/kern/kern_lock.c:147
__mp_acquire_count(ffffffff82a369e0,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227
mi_switch() at mi_switch+0x3d3 sys/kern/sched_bsd.c:416
sleep_finish(ffff8000210f5158,1) at sleep_finish+0x180 sys/kern/kern_synch.c:420
softclock_thread(ffff8000210e9500) at softclock_thread+0xd9 sys/kern/kern_timeout.c:797
end trace frame: 0x0, count: -8
ddb{0}> machine ddbcpu 1
Stopped at db_enter+0x18: addq $0x8,%rsp
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff8259eac4) at panic+0x177 sys/kern/subr_prf.c:202
__assert(ffffffff82612e18,ffffffff8256ffc8,cd,ffffffff825f2f93) at __assert+0x25 sys/kern/subr_prf.c:161
lf_free(fffffd806f00d820) at lf_free+0xe2 ls_rele sys/kern/vfs_lockf.c:152 [inline]
panic(ffffffff8259eac4) at panic+0x177 sys/kern/subr_prf.c:202
__assert(ffffffff82612e18,ffffffff8256ffc8,cd,ffffffff825f2f93) at __assert+0x25 sys/kern/subr_prf.c:161
lf_free(fffffd806f00d820) at lf_free+0xe2 sys/kern/vfs_lockf.c:208
lf_setlock(fffffd806f00d820) at lf_setlock+0xb54
lf_advlock(ffff800000bd5ba0,0,fffffd806f9e35e0,8,ffff8000211d01e0,50) at lf_advlock+0x3a7 sys/kern/vfs_lockf.c:301
VOP_ADVLOCK(fffffd806f2f1168,fffffd806f9e35e0,8,ffff8000211d01e0,50) at VOP_ADVLOCK+0x71 sys/kern/vfs_vops.c:628
sys_fcntl(ffff8000211337a8,ffff8000211d0268,ffff8000211d02c0) at sys_fcntl+0xad9
syscall(ffff8000211d0330) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000211d0330) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xfe52fd01790, count: 5
end of kernel
ddb{1}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff8259eac4) at panic+0x177 sys/kern/subr_prf.c:202
__assert(ffffffff82612e18,ffffffff8256ffc8,cd,ffffffff825f2f93) at __assert+0x25 sys/kern/subr_prf.c:161
lf_free(fffffd806f00d820) at lf_free+0xe2 ls_rele sys/kern/vfs_lockf.c:152 [inline]
panic(ffffffff8259eac4) at panic+0x177 sys/kern/subr_prf.c:202
__assert(ffffffff82612e18,ffffffff8256ffc8,cd,ffffffff825f2f93) at __assert+0x25 sys/kern/subr_prf.c:161
lf_free(fffffd806f00d820) at lf_free+0xe2 sys/kern/vfs_lockf.c:208
lf_setlock(fffffd806f00d820) at lf_setlock+0xb54
lf_advlock(ffff800000bd5ba0,0,fffffd806f9e35e0,8,ffff8000211d01e0,50) at lf_advlock+0x3a7 sys/kern/vfs_lockf.c:301
VOP_ADVLOCK(fffffd806f2f1168,fffffd806f9e35e0,8,ffff8000211d01e0,50) at VOP_ADVLOCK+0x71 sys/kern/vfs_vops.c:628
sys_fcntl(ffff8000211337a8,ffff8000211d0268,ffff8000211d02c0) at sys_fcntl+0xad9
syscall(ffff8000211d0330) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000211d0330) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xfe52fd01790, count: -10
end of kernel
ddb{1}>
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