panic: ffs2_balloc: unwind failed
Stopped at db_enter+0x25: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
60333 72267 0 0 0 0 syz-executor
*440451 72267 0 0 0x4000000 1K syz-executor
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff833d72da) at panic+0x1e5 sys/kern/subr_prf.c:198
ffs2_balloc(fffffd806a0f8270,40000000006,1,fffffd80097fd270,1,ffff80003c47b360) at ffs2_balloc+0x1961
ffs_truncate(fffffd806a0f8270,40000000007,0,fffffd80097fd270) at ffs_truncate+0x410 sys/ufs/ffs/ffs_inode.c:185
ufs_setattr(ffff80003c47b480) at ufs_setattr+0x8e9 sys/ufs/ufs/ufs_vnops.c:403
VOP_SETATTR(fffffd8066c8ab00,ffff80003c47b508,fffffd80097fd270,ffff80003c4682c8) at VOP_SETATTR+0x11b sys/kern/vfs_vops.c:210
dotruncate(ffff80003c4682c8,fffffd8066c8ab00,40000000007) at dotruncate+0x1da sys/kern/vfs_syscalls.c:2892
sys_ftruncate(ffff80003c4682c8,ffff80003c47b730,ffff80003c47b680) at sys_ftruncate+0x20a sys/kern/vfs_syscalls.c:2946
syscall(ffff80003c47b730) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c47b730) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x9dff4dddcd0, 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{1}>
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
*cpu1: ffs2_balloc: unwind failed
ddb{1}> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff833d72da) at panic+0x1e5 sys/kern/subr_prf.c:198
ffs2_balloc(fffffd806a0f8270,40000000006,1,fffffd80097fd270,1,ffff80003c47b360) at ffs2_balloc+0x1961
ffs_truncate(fffffd806a0f8270,40000000007,0,fffffd80097fd270) at ffs_truncate+0x410 sys/ufs/ffs/ffs_inode.c:185
ufs_setattr(ffff80003c47b480) at ufs_setattr+0x8e9 sys/ufs/ufs/ufs_vnops.c:403
VOP_SETATTR(fffffd8066c8ab00,ffff80003c47b508,fffffd80097fd270,ffff80003c4682c8) at VOP_SETATTR+0x11b sys/kern/vfs_vops.c:210
dotruncate(ffff80003c4682c8,fffffd8066c8ab00,40000000007) at dotruncate+0x1da sys/kern/vfs_syscalls.c:2892
sys_ftruncate(ffff80003c4682c8,ffff80003c47b730,ffff80003c47b680) at sys_ftruncate+0x20a sys/kern/vfs_syscalls.c:2946
syscall(ffff80003c47b730) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c47b730) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x9dff4dddcd0, count: -10
ddb{1}> show registers
rdi 0
rsi 0x1
rbp 0xffff80003c47afc0
rbx 0xffff8000299bee07
rdx 0
rcx 0xffff80003c4682c8
rax 0xffff8000299bdff0
r8 0x101010101010101
r9 0x8080808080808080
r10 0x5e55a24b0599fbc0
r11 0x9fd5ee69eabbc3af
r12 0xffff8000299bec08
r13 0
r14 0
r15 0x1
rip 0xffffffff810ba845 db_enter+0x25
cs 0x8
rflags 0x246
rsp 0xffff80003c47afb0
ss 0
db_enter+0x25: addq $0x8,%rsp
ddb{1}> show proc
PROC (syz-executor) tid=440451 pid=72267 tcnt=4 stat=onproc
flags process=0 proc=4000000<THREAD>
runpri=17, usrpri=63, slppri=17, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff80003c4687f8,0xffff80003c469798
process=0xffff8000fffee1c8 user=0xffff80003c476000, vmspace=0xfffffd80687a37c0
estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
1050 401149 74724 0 2 0 syz-executor
1050 179478 74724 0 3 0x4000080 fsleep syz-executor
72267 60333 43764 0 7 0 syz-executor
72267 24333 43764 0 3 0x4000080 fsleep syz-executor
*72267 440451 43764 0 7 0x4000000 syz-executor
72267 136165 43764 0 3 0x4000080 fsleep syz-executor
26616 105157 16277 0 2 0 syz-executor
26616 258824 16277 0 3 0x4000080 kqsel syz-executor
80802 324230 47575 0 3 0x80 nanoslp syz-executor
80802 334246 47575 0 3 0x4000080 fsleep syz-executor
80802 231849 47575 0 3 0x4000080 fsleep syz-executor
80802 207444 47575 0 3 0x4000080 fsleep syz-executor
42740 384353 26074 0 2 0 syz-executor
49197 426350 51282 0 2 0x2 sh
33953 147141 57365 0 2 0 syz-executor
89300 241173 27325 0 2 0 syz-executor
89300 458121 27325 0 3 0x4000080 fsleep syz-executor
60811 63824 0 0 3 0x14280 nfsidl nfsio
28472 484496 0 0 3 0x14280 nfsidl nfsio
20263 355077 0 0 3 0x14280 nfsidl nfsio
62815 162430 0 0 3 0x14280 nfsidl nfsio
23579 260301 0 0 3 0x14280 nfsidl nfsio
62027 133465 0 0 3 0x14280 nfsidl nfsio
32622 147120 0 0 3 0x14280 nfsidl nfsio
89684 272760 0 0 3 0x14280 nfsidl nfsio
90293 113495 0 0 3 0x14280 nfsidl nfsio
65569 180703 0 0 3 0x14280 nfsidl nfsio
3942 16759 0 0 3 0x14280 nfsidl nfsio
43740 349345 0 0 3 0x14280 nfsidl nfsio
16302 399288 0 0 3 0x14280 nfsidl nfsio
18279 362524 0 0 3 0x14280 nfsidl nfsio
94168 215777 0 0 3 0x14280 nfsidl nfsio
317 47364 0 0 3 0x14280 nfsidl nfsio
10637 166801 0 0 3 0x14280 nfsidl nfsio
60467 149879 0 0 3 0x14280 nfsidl nfsio
63249 364118 0 0 3 0x14280 nfsidl nfsio
96336 304081 0 0 3 0x14280 nfsidl nfsio
74724 120985 97965 0 3 0x82 nanoslp syz-executor
57365 34358 97965 0 3 0x82 nanoslp syz-executor
26074 343111 97965 0 3 0x82 nanoslp syz-executor
47575 408806 97965 0 3 0x82 nanoslp syz-executor
43764 373106 97965 0 3 0x82 nanoslp syz-executor
27325 280275 97965 0 3 0x82 nanoslp syz-executor
51282 387085 97965 0 3 0x82 wait syz-executor
16277 5066 97965 0 3 0x82 nanoslp syz-executor
97965 334440 99761 0 3 0x82 kqread syz-executor
99761 245091 72540 0 3 0x10008a sigsusp ksh
72540 398651 21562 0 3 0x98 kqread sshd-session
21562 342629 46034 0 3 0x92 kqread sshd-session
67833 39042 1 0 3 0x100083 ttyin getty
46034 196118 1 0 3 0x88 kqread sshd
17749 262358 65678 74 3 0x1100092 bpf pflogd
65678 58806 1 0 3 0x80 sbwait pflogd
69238 445388 26859 73 3 0x1100090 kqread syslogd
26859 262316 1 0 3 0x100082 sbwait syslogd
42436 446518 1 0 3 0x100080 kqread resolvd
13885 85980 40907 77 3 0x100092 kqread dhcpleased
29480 447927 40907 77 3 0x100092 kqread dhcpleased
40907 236039 1 0 3 0x80 kqread dhcpleased
14688 360924 0 0 3 0x14200 bored smr
44809 162581 0 0 2 0x14200 zerothread
15018 159998 0 0 3 0x14200 aiodoned aiodoned
75525 235806 0 0 3 0x14200 syncer update
67719 405619 0 0 3 0x14200 cleaner cleaner
92178 308244 0 0 3 0x14200 reaper reaper
14433 67234 0 0 3 0x14200 pgdaemon pagedaemon
12757 439838 0 0 3 0x14200 bored viomb
90801 257624 0 0 3 0x40014200 acpi0 acpi0
68236 31471 0 0 3 0x40014200 idle1
74941 353129 0 0 3 0x14200 bored softnet1
80581 454842 0 0 3 0x14200 bored softnet0
16032 402425 0 0 3 0x14200 smrbar systqmp
19903 205585 0 0 3 0x14200 bored systq
12196 349983 0 0 3 0x14200 tmoslp softclockmp
9161 341648 0 0 3 0x40014200 tmoslp softclock
78607 370063 0 0 3 0x40014200 idle0
1 428696 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
Process 72267 (syz-executor) thread 0xffff80003c4682c8 (440451)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff839dd2c0)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1
#2 sleep_finish+0x2d8 sys/kern/kern_synch.c:369
#3 biowait+0xc6 sys/kern/vfs_bio.c:1242
#4 bwrite+0x2e7 sys/kern/vfs_bio.c:754
#5 ffs2_balloc+0xc24 sys/ufs/ffs/ffs_balloc.c:646
#6 ffs_truncate+0x410 sys/ufs/ffs/ffs_inode.c:185
#7 ufs_setattr+0x8e9 sys/ufs/ufs/ufs_vnops.c:403
#8 VOP_SETATTR+0x11b sys/kern/vfs_vops.c:210
#9 dotruncate+0x1da sys/kern/vfs_syscalls.c:2892
#10 sys_ftruncate+0x20a sys/kern/vfs_syscalls.c:2946
#11 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#11 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
#12 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd806a0f8310)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320
#2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
#3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527
#4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576
#5 sys_ftruncate+0x1f1 sys/kern/vfs_syscalls.c:2946
#6 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#6 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
#7 Xsyscall+0x128
Process 16032 (systqmp) thread 0xffff8000ffffea60 (402425)
shared rwlock systqmp r = 0 (0xffffffff8389da88)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 taskq_thread+0x12a sys/kern/kern_task.c:442
#2 proc_trampoline+0x10
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 11053 12084K 12178K 166960K 12156 0
pcb 18 12K 12K 166960K 18 0
rtable 235 6K 6K 166960K 345 0
pf 34 17K 18K 166960K 45 0
ifaddr 43 7K 7K 166960K 45 0
ifgroup 55 2K 2K 166960K 55 0
sysctl 1 1K 9K 166960K 5 0
counters 70 37K 37K 166960K 70 0
ioctlops 0 0K 4K 166960K 1485 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1291 81K 81K 166960K 1370 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 1K 166960K 2 0
VM map 2 1K 1K 166960K 2 0
sem 2 0K 0K 166960K 2 0
dirhash 12 2K 2K 166960K 12 0
ACPI 1692 195K 286K 166960K 12470 0
file desc 18 65K 93K 166960K 143 0
proc 70 115K 147K 166960K 552 0
subproc 72 4K 4K 166960K 72 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
in_multi 99 7K 7K 166960K 99 0
ether_multi 1 0K 0K 166960K 1 0
mrt 0 0K 0K 166960K 2 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 25 122K 122K 166960K 25 0
exec 0 0K 1K 166960K 377 0
fusefs mount 1 32K 32K 166960K 1 0
tdb 3 0K 0K 166960K 3 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 227 175K 185K 166960K 3046 0
UVM aobj 3 2K 2K 166960K 3 0
pinsyscall 43 86K 104K 166960K 1277 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
NDP 13 0K 2K 166960K 28 0
temp 34 9070K 9134K 166960K 4051 0
kqueue 13 20K 20K 166960K 22 0
SYN cache 2 16K 16K 166960K 2 0
ddb{1}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
plcache 128 26 0 0 1 0 1 1 0 8 0
rtpcb 120 33 0 30 1 0 1 1 0 8 0
rtentry 176 110 0 1 5 0 5 5 0 8 0
unpcb 144 36 0 19 1 0 1 1 0 8 0
syncache 336 3 0 3 1 0 1 1 0 8 1
tcpcb 736 10 0 4 1 0 1 1 0 8 0
arp 136 18 0 0 1 0 1 1 0 8 0
inpcb 328 79 0 67 1 0 1 1 0 8 0
nd6 152 23 0 0 1 0 1 1 0 8 0
kcovpl 48 8 0 0 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 19 0 0 1 0 1 1 0 8 0
pfstkey 128 19 0 0 1 0 1 1 0 8 0
pfstate 448 19 0 0 3 0 3 3 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 256 451 0 0 29 0 29 29 0 8 0
art_table 40 452 0 0 5 0 5 5 0 8 0
art_node 32 110 0 10 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 1582 0 115 92 0 92 92 0 8 0
ffsino 296 1582 0 115 113 0 113 113 0 8 0
nchpl 144 1783 0 80 64 0 64 64 0 8 0
vnodes 216 1673 0 0 93 0 93 93 0 8 0
namei 1024 5371 0 5371 1 0 1 1 0 8 1
percpumem 16 50 0 0 1 0 1 1 0 8 0
kstatmem 264 26 0 0 2 0 2 2 0 8 0
scxspl 216 6076 0 6076 4 1 3 3 1 8 3
plimitpl 152 28 0 10 1 0 1 1 0 8 0
sigapl 424 475 0 407 9 0 9 9 0 8 0
knotepl 120 59 0 0 2 0 2 2 0 8 0
kqueuepl 224 19 0 9 1 0 1 1 0 8 0
pipepl 344 122 0 95 3 0 3 3 0 8 0
fdescpl 528 439 0 407 3 0 3 3 0 8 0
filepl 160 1545 0 1329 9 0 9 9 0 8 0
lockfpl 104 11 0 8 1 0 1 1 0 8 0
lockfspl 48 7 0 4 1 0 1 1 0 8 0
sessionpl 144 22 0 13 1 0 1 1 0 8 0
pgrppl 48 30 0 13 1 0 1 1 0 8 0
ucredpl 104 69 0 56 1 0 1 1 0 8 0
zombiepl 144 407 0 407 1 0 1 1 0 8 1
processpl 1232 475 0 407 6 0 6 6 0 8 0
procpl 664 494 0 417 7 0 7 7 0 8 0
sockpl 752 149 0 116 4 0 4 4 0 8 0
mcl64k 65536 1 0 0 1 0 1 1 0 8 0
mcl8k 8192 2 0 0 1 0 1 1 0 8 0
mcl4k 4096 121 0 0 16 0 16 16 0 8 0
mcl2k 2048 8 0 0 1 0 1 1 0 8 0
mtagpl 96 1 0 0 1 0 1 1 0 8 0
mbufpl 256 133 0 0 9 0 9 9 0 8 0
bufpl 280 2291 0 105 157 0 157 157 0 8 0
anonpl 32 3859 0 0 32 0 32 32 0 246 0
amapchunkpl 152 8435 0 7973 18 0 18 18 0 158 0
amappl16 200 1789 0 1775 5 1 4 5 0 8 3
amappl15 192 64 0 64 1 1 0 1 0 8 0
amappl14 184 432 0 429 1 0 1 1 0 8 0
amappl13 176 122 0 109 1 0 1 1 0 8 0
amappl12 168 684 0 656 2 0 2 2 0 8 0
amappl11 160 8 0 8 1 1 0 1 0 8 0
amappl10 152 81 0 67 1 0 1 1 0 8 0
amappl9 144 266 0 265 1 0 1 1 0 8 0
amappl8 136 112 0 110 1 0 1 1 0 8 0
amappl7 128 142 0 129 1 0 1 1 0 8 0
amappl6 120 165 0 163 1 0 1 1 0 8 0
amappl5 112 91 0 81 1 0 1 1 0 8 0
amappl4 104 285 0 265 1 0 1 1 0 8 0
amappl3 96 1461 0 1357 3 0 3 3 0 8 0
amappl2 88 509 0 451 2 0 2 2 0 8 0
amappl1 80 9309 0 8699 15 0 15 15 0 8 0
amappl 88 2337 0 2183 4 0 4 4 0 92 0
uvmvnodes 80 99 0 0 3 0 3 3 0 8 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
uaddrrnd 24 439 0 407 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 439 0 407 1 0 1 1 0 8 0
vmmpekpl 168 5379 0 5348 2 0 2 2 0 8 0
vmmpepl 168 36341 0 34456 86 0 86 86 0 357 4
vmsppl 488 438 0 407 5 0 5 5 0 8 0
rwobjpl 80 13595 0 12584 24 0 24 24 0 8 1
pdppl 4096 885 0 814 97 18 79 85 0 8 8
pvpl 32 9135 0 0 75 1 74 75 0 265 0
pmappl 256 438 0 407 3 0 3 3 0 8 0
extentpl 40 45 0 27 1 0 1 1 0 8 0
phpool 112 264 0 21 8 0 8 8 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x27: addq $0x8,%rsp
x86_ipi_db(ffffffff838d7ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394
x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27
end of kernel
end trace frame: 0x744b6a0a1020, count: 12
ddb{0}> trace
x86_ipi_db(ffffffff838d7ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394
x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27
end of kernel
end trace frame: 0x744b6a0a1020, count: -3
ddb{0}> machine ddbcpu 1
Stopped at db_enter+0x25: addq $0x8,%rsp
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff833d72da) at panic+0x1e5 sys/kern/subr_prf.c:198
ffs2_balloc(fffffd806a0f8270,40000000006,1,fffffd80097fd270,1,ffff80003c47b360) at ffs2_balloc+0x1961
ffs_truncate(fffffd806a0f8270,40000000007,0,fffffd80097fd270) at ffs_truncate+0x410 sys/ufs/ffs/ffs_inode.c:185
ufs_setattr(ffff80003c47b480) at ufs_setattr+0x8e9 sys/ufs/ufs/ufs_vnops.c:403
VOP_SETATTR(fffffd8066c8ab00,ffff80003c47b508,fffffd80097fd270,ffff80003c4682c8) at VOP_SETATTR+0x11b sys/kern/vfs_vops.c:210
dotruncate(ffff80003c4682c8,fffffd8066c8ab00,40000000007) at dotruncate+0x1da sys/kern/vfs_syscalls.c:2892
sys_ftruncate(ffff80003c4682c8,ffff80003c47b730,ffff80003c47b680) at sys_ftruncate+0x20a sys/kern/vfs_syscalls.c:2946
syscall(ffff80003c47b730) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c47b730) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x9dff4dddcd0, count: 5
ddb{1}> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff833d72da) at panic+0x1e5 sys/kern/subr_prf.c:198
ffs2_balloc(fffffd806a0f8270,40000000006,1,fffffd80097fd270,1,ffff80003c47b360) at ffs2_balloc+0x1961
ffs_truncate(fffffd806a0f8270,40000000007,0,fffffd80097fd270) at ffs_truncate+0x410 sys/ufs/ffs/ffs_inode.c:185
ufs_setattr(ffff80003c47b480) at ufs_setattr+0x8e9 sys/ufs/ufs/ufs_vnops.c:403
VOP_SETATTR(fffffd8066c8ab00,ffff80003c47b508,fffffd80097fd270,ffff80003c4682c8) at VOP_SETATTR+0x11b sys/kern/vfs_vops.c:210
dotruncate(ffff80003c4682c8,fffffd8066c8ab00,40000000007) at dotruncate+0x1da sys/kern/vfs_syscalls.c:2892
sys_ftruncate(ffff80003c4682c8,ffff80003c47b730,ffff80003c47b680) at sys_ftruncate+0x20a sys/kern/vfs_syscalls.c:2946
syscall(ffff80003c47b730) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c47b730) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x9dff4dddcd0, count: -10