uvm_fault: dt_ioctl_record_stop (2)
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syzbot
Jul 31, 2025, 8:51:33 PM7/31/25
to syzkaller-o...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 3b565b651350 vioscsi: Get max_luns from host
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=15f262a2580000
kernel config: https://syzkaller.appspot.com/x/.config?x=7058272de1526588
dashboard link: https://syzkaller.appspot.com/bug?extid=1ee7b3d649b3fd543300
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/adecca019341/disk-3b565b65.raw.xz
bsd.gdb: https://storage.googleapis.com/syzbot-assets/837e63c7f6b3/bsd-3b565b65.gdb.xz
kernel image: https://storage.googleapis.com/syzbot-assets/42d486e428d2/kernel-3b565b65.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+1ee7b3...@syzkaller.appspotmail.com
uvm_fault(0xfffffd806b80db90, 0x0, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at dt_ioctl_record_stop+0x108: movq 0(%r14),%r14
TID PID UID PRFLAGS PFLAGS CPU COMMAND
460246 93889 0 0x2 0 0 syz-executor
dt_ioctl_record_stop(ffff800001497000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586
dtclose(21e5f,1,2000,ffff80003c4639d8) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline]
dtclose(21e5f,1,2000,ffff80003c4639d8) at dtclose+0x109 sys/dev/dt/dt_dev.c:232
spec_close(ffff80002a3accd0) at spec_close+0x466 sys/kern/spec_vnops.c:-1
VOP_CLOSE(fffffd807071fb58,1,fffffd80097fb1a0,ffff80003c4639d8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156
vn_closefile(fffffd806b39fea8,ffff80003c4639d8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline]
vn_closefile(fffffd806b39fea8,ffff80003c4639d8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615
fdrop(fffffd806b39fea8,ffff80003c4639d8) at fdrop+0x121 sys/kern/kern_descrip.c:1267
closef(fffffd806b39fea8,ffff80003c4639d8) at closef+0x192 sys/kern/kern_descrip.c:1251
fdfree(ffff80003c4639d8) at fdfree+0x116 sys/kern/kern_descrip.c:1182
exit1(ffff80003c4639d8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215
sys_exit(ffff80003c4639d8,ffff80002a3ad040,ffff80002a3acf90) at sys_exit+0x1a sys/kern/kern_exit.c:-1
syscall(ffff80002a3ad040) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a3ad040) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7e74b1fc36b0, count: 3
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: uvm_fault(0xfffffd806b80db90, 0x0, 0, 1) -> e
ddb{1}> trace
dt_ioctl_record_stop(ffff800001497000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586
dtclose(21e5f,1,2000,ffff80003c4639d8) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline]
dtclose(21e5f,1,2000,ffff80003c4639d8) at dtclose+0x109 sys/dev/dt/dt_dev.c:232
spec_close(ffff80002a3accd0) at spec_close+0x466 sys/kern/spec_vnops.c:-1
VOP_CLOSE(fffffd807071fb58,1,fffffd80097fb1a0,ffff80003c4639d8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156
vn_closefile(fffffd806b39fea8,ffff80003c4639d8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline]
vn_closefile(fffffd806b39fea8,ffff80003c4639d8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615
fdrop(fffffd806b39fea8,ffff80003c4639d8) at fdrop+0x121 sys/kern/kern_descrip.c:1267
closef(fffffd806b39fea8,ffff80003c4639d8) at closef+0x192 sys/kern/kern_descrip.c:1251
fdfree(ffff80003c4639d8) at fdfree+0x116 sys/kern/kern_descrip.c:1182
exit1(ffff80003c4639d8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215
sys_exit(ffff80003c4639d8,ffff80002a3ad040,ffff80002a3acf90) at sys_exit+0x1a sys/kern/kern_exit.c:-1
syscall(ffff80002a3ad040) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a3ad040) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7e74b1fc36b0, count: -12
ddb{1}> show registers
rdi 0
rsi 0
rbp 0xffff80002a3acc00
rbx 0x1
rdx 0
rcx 0xffff80003c4639d8
rax 0xffffffff8377f4c8 dt_prov_syscall
r8 0
r9 0x1
r10 0x5241cde580fc0cc
r11 0x86330398c4e8029d
r12 0
r13 0
r14 0
r15 0xffff8000014b3800
rip 0xffffffff823896a8 dt_ioctl_record_stop+0x108
cs 0x8
rflags 0x10207 __ALIGN_SIZE+0xf207
rsp 0xffff80002a3acbd0
ss 0x10
dt_ioctl_record_stop+0x108: movq 0(%r14),%r14
ddb{1}> show proc
PROC (syz-executor) tid=332037 pid=54059 tcnt=0 stat=onproc
flags process=1008<EXITING,SINGLEEXIT> proc=2000<WEXIT>
runpri=32, usrpri=83, slppri=32, nice=20
wchan=0x0, wmesg=, ps_single=0xffff80003c4639d8 scnt=-1 ecnt=1
forw=0xffffffffffffffff, list=0xffff80003c462a78,0xffff80003c462568
process=0xffff80003c4b8508 user=0xffff80002a3a8000, vmspace=0xfffffd806b80db90
estcpu=33, cpticks=5, pctcpu=0.0, user=0, sys=0, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
77070 310868 47370 0 2 0 syz-executor
77070 518800 47370 0 3 0x4000080 fsleep syz-executor
39558 76876 48519 0 2 0 syz-executor
39558 307161 48519 0 3 0x4000080 fsleep syz-executor
65109 138593 20403 0 2 0 syz-executor
65109 392028 20403 0 3 0x4000080 fsleep syz-executor
65109 157998 20403 0 3 0x4000080 fsleep syz-executor
65109 383096 20403 0 3 0x4000080 fsleep syz-executor
80213 466550 86738 0 3 0x3000 suspend syz-executor
80213 385172 86738 0 2 0x4081000 syz-executor
80213 520159 86738 0 3 0x4081000 inode syz-executor
36623 176529 60516 0 3 0x82 nanoslp syz-executor
23752 308349 1 0 3 0x100083 ttyopn getty
34999 33785 0 0 3 0x14200 acct acct
96208 174959 0 0 3 0x14200 bored sosplice
76512 418536 60516 0 3 0x2 biowait syz-executor
20403 297754 60516 0 3 0x82 nanoslp syz-executor
93889 460246 60516 0 7 0x2 syz-executor
48519 332387 60516 0 3 0x82 nanoslp syz-executor
14772 435846 60516 0 3 0x82 nanoslp syz-executor
47370 265643 60516 0 3 0x82 nanoslp syz-executor
86738 194563 60516 0 3 0x82 wait syz-executor
60516 388485 10486 0 3 0x82 nanoslp syz-executor
10486 75936 75168 0 3 0x10008a sigsusp ksh
75168 287109 58985 0 3 0x98 kqread sshd-session
58985 505147 29831 0 3 0x92 kqread sshd-session
29831 148270 1 0 3 0x88 kqread sshd
41635 6492 52740 74 3 0x1100092 bpf pflogd
52740 180403 1 0 3 0x80 sbwait pflogd
86156 106819 44831 73 3 0x1100090 kqread syslogd
44831 189099 1 0 3 0x100082 sbwait syslogd
96717 26960 1 0 3 0x100080 kqread resolvd
72699 184102 86765 77 3 0x100092 kqread dhcpleased
60404 319349 86765 77 3 0x100092 kqread dhcpleased
86765 508608 1 0 3 0x80 kqread dhcpleased
59044 444073 0 0 3 0x14200 bored smr
89186 224981 0 0 3 0x14200 pgzero zerothread
9297 104019 0 0 3 0x14200 aiodoned aiodoned
70134 431514 0 0 3 0x14200 syncer update
48288 8208 0 0 3 0x14200 cleaner cleaner
237 479351 0 0 2 0x14200 reaper
20302 338060 0 0 3 0x14200 pgdaemon pagedaemon
80909 330025 0 0 3 0x14200 bored viomb
33900 508373 0 0 3 0x40014200 acpi0 acpi0
17027 53454 0 0 3 0x40014200 idle1
73217 92551 0 0 3 0x14200 bored softnet7
59567 282637 0 0 3 0x14200 bored softnet6
52689 186646 0 0 3 0x14200 bored softnet5
35319 32898 0 0 3 0x14200 bored softnet4
80870 490659 0 0 3 0x14200 bored softnet3
1406 452560 0 0 3 0x14200 bored softnet2
69151 508050 0 0 3 0x14200 bored softnet1
96550 407893 0 0 3 0x14200 bored softnet0
40682 453042 0 0 3 0x14200 bored systqmp
84745 155709 0 0 3 0x14200 bored systq
15283 357904 0 0 3 0x14200 tmoslp softclockmp
46291 507645 0 0 3 0x40014200 tmoslp softclock
23210 405870 0 0 3 0x40014200 idle0
1 74407 0 0 3 0x82 wait init
0 0 -1 0 3 0x10010200 scheduler swapper
ddb{1}> show all locks
Process 80213 (syz-executor) thread 0xffff8000ffff3490 (385172)
exclusive rrwlock inode r = 0 (0xfffffd806ea10240)
#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+0xa3 sys/kern/vfs_vops.c:527
#4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570
#5 vn_write+0x18f sys/kern/vfs_vnops.c:405
#6 dofilewritev+0x242 sys/kern/sys_generic.c:380
#7 sys_write+0xa2 sys/kern/sys_generic.c:300
#8 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#8 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748
#9 Xsyscall+0x128
Process 80213 (syz-executor) thread 0xffff80003600a7f0 (520159)
exclusive rrwlock inode r = 0 (0xfffffd806b9496a8)
#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+0xa3 sys/kern/vfs_vops.c:527
#4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570
#5 vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1
#6 namei+0x7ca sys/kern/vfs_lookup.c:250
#7 vn_open+0x15a sys/kern/vfs_vnops.c:140
#8 doopenat+0x35b sys/kern/vfs_syscalls.c:1137
#9 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#9 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748
#10 Xsyscall+0x128
Process 76512 (syz-executor) thread 0xffff8000ffff39b0 (418536)
exclusive rrwlock inode r = 0 (0xfffffd806e1cec98)
#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+0xa3 sys/kern/vfs_vops.c:527
#4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570
#5 vget+0x2a2 sys/kern/vfs_subr.c:693
#6 ufs_ihashget+0x185 sys/ufs/ufs/ufs_ihash.c:98
#7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1203
#8 ufs_lookup+0x1a36 sys/ufs/ufs/ufs_lookup.c:478
#9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
#10 vfs_lookup+0x93a sys/kern/vfs_lookup.c:566
#11 namei+0x7ca sys/kern/vfs_lookup.c:250
#12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1864
#13 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#13 syscall+0xb17 sys/arch/amd64/amd64/trap.c:748
#14 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd806c0eb328)
#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+0xa3 sys/kern/vfs_vops.c:527
#4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570
#5 vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1
#6 namei+0x7ca sys/kern/vfs_lookup.c:250
#7 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1864
#8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:748
#9 Xsyscall+0x128
Process 93889 (syz-executor) thread 0xffff8000ffff2f70 (460246)
exclusive rwlock vmmaplk r = 0 (0xfffffd806fd8f110)
#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 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5168
#3 uvmspace_fork+0x12b sys/uvm/uvm_map.c:3738
#4 process_new+0x577 sys/kern/kern_fork.c:284
#5 fork1+0x3f6 sys/kern/kern_fork.c:-1
#6 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#6 syscall+0xb17 sys/arch/amd64/amd64/trap.c:748
#7 Xsyscall+0x128
exclusive rwlock vmmaplk r = 0 (0xfffffd800b027a88)
#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 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5168
#3 uvmspace_fork+0x44 sys/uvm/uvm_map.c:3729
#4 process_new+0x577 sys/kern/kern_fork.c:284
#5 fork1+0x3f6 sys/kern/kern_fork.c:-1
#6 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#6 syscall+0xb17 sys/arch/amd64/amd64/trap.c:748
#7 Xsyscall+0x128
Process 237 (reaper) thread 0xffff8000ffffc7b8 (479351)
exclusive rwlock kmmaplk r = 0 (0xffffffff83914dc8)
#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 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5168
#3 uvm_unmap+0x7d sys/uvm/uvm_map.c:1792
#4 km_free+0x87 sys/uvm/uvm_km.c:831
#5 uvm_uarea_free+0x4f sys/uvm/uvm_glue.c:304
#6 reaper+0x1aa sys/kern/kern_exit.c:493
#7 proc_trampoline+0x10
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10234 11053K 11709K 166960K 11967 0
pcb 20 14K 14K 166960K 192 0
rtable 148 7K 8K 166960K 426 0
pf 28 16K 18K 166960K 105 0
ifaddr 29 5K 7K 166960K 83 0
ifgroup 43 2K 2K 166960K 122 0
sysctl 4 1K 9K 166960K 14 0
counters 62 36K 37K 166960K 142 0
ioctlops 0 0K 4K 166960K 1616 0
iov 0 0K 32K 166960K 51 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1364 86K 86K 166960K 1923 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 5K 166960K 13 0
VM map 2 1K 1K 166960K 2 0
sem 12 0K 0K 166960K 43 0
dirhash 12 2K 2K 166960K 15 0
ACPI 1692 195K 286K 166960K 12470 0
file desc 17 61K 85K 166960K 946 0
sigio 0 0K 0K 166960K 47 0
proc 72 115K 180K 166960K 668 0
subproc 72 4K 4K 166960K 81 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 141 0
in_multi 56 4K 7K 166960K 143 0
ether_multi 1 0K 0K 166960K 6 0
mrt 1 0K 0K 166960K 2 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 253 1129K 1129K 166960K 253 0
exec 0 0K 1K 166960K 460 0
fusefs mount 1 32K 32K 166960K 1 0
pfkey data 0 0K 0K 166960K 2 0
tdb 3 0K 0K 166960K 3 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 234 159K 177K 166960K 10721 0
UVM aobj 23 2K 2K 166960K 25 0
pinsyscall 42 84K 103K 166960K 2093 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 1K 166960K 58 0
NDP 9 0K 2K 166960K 56 0
temp 76 8648K 8716K 166960K 51356 0
kqueue 14 22K 32K 166960K 183 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 99 0 96 1 0 1 1 0 8 0
rtentry 176 143 0 89 5 0 5 5 0 8 0
unpcb 144 576 0 559 5 3 2 4 0 8 1
syncache 336 4 0 4 2 2 0 1 0 8 0
tcpcb 736 314 0 307 11 9 2 10 0 8 1
arp 128 14 0 7 1 0 1 1 0 8 0
inpcb 328 1077 0 1062 21 14 7 12 0 8 5
nd6 144 41 0 29 2 0 2 2 0 8 1
pkpcb 40 71 0 71 2 1 1 1 0 8 1
kcovpl 48 9 0 1 1 0 1 1 0 8 0
ppxss 1192 31 0 31 1 0 1 1 0 8 1
pppxif 1504 6 0 6 1 1 0 1 0 8 0
pffrag 232 9 0 4 1 0 1 1 0 482 0
pffrnode 88 9 0 4 1 0 1 1 0 8 0
pffrent 40 16 0 11 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 24 104 0 24 1 0 1 1 0 8 0
pfstkey 128 104 0 24 3 0 3 3 0 8 0
pfstate 384 104 0 24 9 0 9 9 0 8 0
pfrule 1344 23 0 17 2 1 1 2 0 8 0
art_heap8 4096 2 0 1 2 1 1 2 0 8 0
art_heap4 256 823 0 575 36 4 32 32 0 8 11
art_table 40 825 0 576 6 0 6 6 0 8 1
art_node 32 142 0 96 1 0 1 1 0 8 0
sysvmsgpl 40 43 0 41 1 0 1 1 0 8 0
semupl 112 1 0 1 1 1 0 1 0 8 0
semapl 112 37 0 27 1 0 1 1 0 8 0
shmpl 112 22 0 2 1 0 1 1 0 8 0
dirhash 1024 19 0 2 3 0 3 3 0 8 0
dino2pl 256 3201 0 1693 95 0 95 95 0 8 0
ffsino 296 3201 0 1693 117 0 117 117 0 8 0
nchpl 144 4570 0 4028 64 31 33 64 0 8 8
rtmask 32 1 0 1 1 0 1 1 0 8 1
uvmvnodes 80 3509 0 0 72 0 72 72 0 8 0
vnodes 216 3509 0 0 195 0 195 195 0 8 0
namei 1024 14975 0 14974 3 2 1 2 0 8 0
percpumem 16 86 0 40 1 0 1 1 0 8 0
kstatmem 264 78 0 58 3 1 2 3 0 8 0
acpiwqpl 32 1 0 1 1 0 1 1 1 8 1
scsiplug 72 6 0 6 3 2 1 1 0 8 1
scxspl 216 36170 0 36169 12 9 3 8 1 8 2
plimitpl 152 294 0 275 1 0 1 1 0 8 0
sigapl 424 1280 0 1225 9 1 8 9 0 8 0
knotepl 120 624 0 0 19 0 19 19 0 8 0
kqueuepl 224 307 0 296 2 1 1 2 0 8 0
pipepl 344 331 0 304 17 11 6 9 0 8 3
fdescpl 528 1236 0 1205 3 0 3 3 0 8 0
filepl 160 7594 0 7369 23 8 15 17 0 8 3
lockfpl 104 460 0 458 2 0 2 2 0 8 1
lockfspl 48 165 0 163 1 0 1 1 0 8 0
sessionpl 144 26 0 17 1 0 1 1 0 8 0
pgrppl 48 48 0 31 1 0 1 1 0 8 0
ucredpl 104 1005 0 992 1 0 1 1 0 8 0
zombiepl 144 1582 0 1579 1 0 1 1 0 8 0
processpl 1248 1280 0 1225 6 0 6 6 0 8 0
procpl 656 2732 0 2669 9 2 7 8 0 8 0
sosppl 168 4 0 4 2 2 0 1 0 8 0
sockpl 752 1838 0 1803 32 21 11 17 0 8 7
mcl64k 65536 5 0 0 1 0 1 1 0 8 0
mcl16k 16384 3 0 0 1 0 1 1 0 8 0
mcl12k 12288 1 0 0 1 0 1 1 0 8 0
mcl9k 9216 1 0 0 1 0 1 1 0 8 0
mcl8k 8192 4 0 0 1 0 1 1 0 8 0
mcl4k 4096 113 0 0 15 0 15 15 0 8 0
mcl2k 2048 25 0 0 4 0 4 4 0 8 0
mtagpl 96 4 0 0 1 0 1 1 0 8 0
mbufpl 256 252 0 0 15 0 15 15 0 8 0
bufpl 280 15407 0 9263 440 0 440 440 0 8 0
anonpl 32 15859 0 0 128 0 128 128 0 246 0
amapchunkpl 152 35785 0 35308 46 11 35 35 0 158 13
amappl16 200 5375 0 5185 54 39 15 42 0 8 0
amappl15 192 7 0 6 1 0 1 1 0 8 0
amappl14 184 122 0 110 1 0 1 1 0 8 0
amappl13 176 7 0 6 1 0 1 1 0 8 0
amappl12 168 1914 0 1884 3 1 2 2 0 8 0
amappl11 160 58 0 44 1 0 1 1 0 8 0
amappl10 152 5 0 5 1 1 0 1 0 8 0
amappl9 144 248 0 248 1 1 0 1 0 8 0
amappl8 136 27 0 24 1 0 1 1 0 8 0
amappl7 128 110 0 98 1 0 1 1 0 8 0
amappl6 120 188 0 184 1 0 1 1 0 8 0
amappl5 112 127 0 117 1 0 1 1 0 8 0
amappl4 104 312 0 289 1 0 1 1 0 8 0
amappl3 96 6899 0 6791 5 1 4 4 0 8 0
amappl2 88 675 0 613 2 0 2 2 0 8 0
amappl1 80 12084 0 11486 15 1 14 15 0 8 0
amappl 88 9839 0 9677 5 0 5 5 0 92 0
dma4096 4096 2 0 2 2 2 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 128 254 0 254 2 1 1 1 0 8 1
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 24 0 2 1 0 1 1 0 8 0
uaddrrnd 24 1236 0 1205 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 1236 0 1205 1 0 1 1 0 8 0
vmmpekpl 168 12021 0 11977 3 0 3 3 0 8 0
vmmpepl 168 84969 0 82833 125 8 117 120 0 357 16
vmsppl 488 1235 0 1205 5 0 5 5 0 8 0
rwobjpl 80 28817 0 24194 96 0 96 96 0 8 0
pdppl 4096 2480 0 2410 104 32 72 82 0 8 2
pvpl 32 21138 0 0 171 0 171 171 0 265 0
pmappl 256 1235 0 1205 3 0 3 3 0 8 0
extentpl 40 45 0 27 1 0 1 1 0 8 0
phpool 112 300 0 53 8 0 8 8 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x27: addq $0x8,%rsp
x86_ipi_db(ffffffff837dcff0) 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
__mp_lock(ffffffff839c3480) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline]
__mp_lock(ffffffff839c3480) at __mp_lock+0x192 sys/kern/kern_lock.c:165
intr_handler(ffff80002a39d450,ffff800000079a80) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:559
Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f
__mp_lock(ffffffff839c3480) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline]
__mp_lock(ffffffff839c3480) at __mp_lock+0x192 sys/kern/kern_lock.c:165
__mp_acquire_count(ffffffff839c3480,1) at __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1
pool_get(ffffffff8386d6d0,1) at pool_get+0x266 sys/kern/subr_pool.c:588
uvm_mapent_alloc(fffffd806fd8f010,0) at uvm_mapent_alloc+0x354 sys/uvm/uvm_map.c:-1
uvm_map_mkentry(fffffd806fd8f010,fffffd806b966828,fffffd806b966828,200000000000,1000000,0,16333265d603b078,1000000) at uvm_map_mkentry+0x87 sys/uvm/uvm_map.c:-1
uvm_mapent_clone(fffffd806fd8f010,200000000000,1000000,0,3,7,b34bf5632f501dab,fffffd806bf4d8d8,ffff80002a39d8a8,fffffd806fd8f010) at uvm_mapent_clone+0xba sys/uvm/uvm_map.c:3467
uvm_mapent_forkcopy(1,fffffd806fd8f010,fffffd800b027988,fffffd806bf4d8d8,ffff80002a39d8a8) at uvm_mapent_forkcopy+0x6f sys/uvm/uvm_map.c:3559
uvmspace_fork(ffff80002a2c3a98) at uvmspace_fork+0x299 sys/uvm/uvm_map.c:3762
end trace frame: 0xffff80002a39d990, count: 0
ddb{0}> trace
x86_ipi_db(ffffffff837dcff0) 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
__mp_lock(ffffffff839c3480) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline]
__mp_lock(ffffffff839c3480) at __mp_lock+0x192 sys/kern/kern_lock.c:165
intr_handler(ffff80002a39d450,ffff800000079a80) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:559
Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f
__mp_lock(ffffffff839c3480) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline]
__mp_lock(ffffffff839c3480) at __mp_lock+0x192 sys/kern/kern_lock.c:165
__mp_acquire_count(ffffffff839c3480,1) at __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1
pool_get(ffffffff8386d6d0,1) at pool_get+0x266 sys/kern/subr_pool.c:588
uvm_mapent_alloc(fffffd806fd8f010,0) at uvm_mapent_alloc+0x354 sys/uvm/uvm_map.c:-1
uvm_map_mkentry(fffffd806fd8f010,fffffd806b966828,fffffd806b966828,200000000000,1000000,0,16333265d603b078,1000000) at uvm_map_mkentry+0x87 sys/uvm/uvm_map.c:-1
uvm_mapent_clone(fffffd806fd8f010,200000000000,1000000,0,3,7,b34bf5632f501dab,fffffd806bf4d8d8,ffff80002a39d8a8,fffffd806fd8f010) at uvm_mapent_clone+0xba sys/uvm/uvm_map.c:3467
uvm_mapent_forkcopy(1,fffffd806fd8f010,fffffd800b027988,fffffd806bf4d8d8,ffff80002a39d8a8) at uvm_mapent_forkcopy+0x6f sys/uvm/uvm_map.c:3559
uvmspace_fork(ffff80002a2c3a98) at uvmspace_fork+0x299 sys/uvm/uvm_map.c:3762
process_new(ffff80003600b230,ffff80002a2c3a98,1) at process_new+0x577 sys/kern/kern_fork.c:284
fork1(ffff8000ffff2f70,1,ffffffff8326def0,0,ffff80002a39da80,0) at fork1+0x3f6 sys/kern/kern_fork.c:-1
syscall(ffff80002a39db30) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a39db30) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7745eae75f50, count: -18
ddb{0}> machine ddbcpu 1
Stopped at dt_ioctl_record_stop+0x108: movq 0(%r14),%r14
dt_ioctl_record_stop(ffff800001497000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586
dtclose(21e5f,1,2000,ffff80003c4639d8) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline]
dtclose(21e5f,1,2000,ffff80003c4639d8) at dtclose+0x109 sys/dev/dt/dt_dev.c:232
spec_close(ffff80002a3accd0) at spec_close+0x466 sys/kern/spec_vnops.c:-1
VOP_CLOSE(fffffd807071fb58,1,fffffd80097fb1a0,ffff80003c4639d8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156
vn_closefile(fffffd806b39fea8,ffff80003c4639d8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline]
vn_closefile(fffffd806b39fea8,ffff80003c4639d8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615
fdrop(fffffd806b39fea8,ffff80003c4639d8) at fdrop+0x121 sys/kern/kern_descrip.c:1267
closef(fffffd806b39fea8,ffff80003c4639d8) at closef+0x192 sys/kern/kern_descrip.c:1251
fdfree(ffff80003c4639d8) at fdfree+0x116 sys/kern/kern_descrip.c:1182
exit1(ffff80003c4639d8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215
sys_exit(ffff80003c4639d8,ffff80002a3ad040,ffff80002a3acf90) at sys_exit+0x1a sys/kern/kern_exit.c:-1
syscall(ffff80002a3ad040) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a3ad040) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7e74b1fc36b0, count: 3
ddb{1}> trace
dt_ioctl_record_stop(ffff800001497000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586
dtclose(21e5f,1,2000,ffff80003c4639d8) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline]
dtclose(21e5f,1,2000,ffff80003c4639d8) at dtclose+0x109 sys/dev/dt/dt_dev.c:232
spec_close(ffff80002a3accd0) at spec_close+0x466 sys/kern/spec_vnops.c:-1
VOP_CLOSE(fffffd807071fb58,1,fffffd80097fb1a0,ffff80003c4639d8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156
vn_closefile(fffffd806b39fea8,ffff80003c4639d8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline]
vn_closefile(fffffd806b39fea8,ffff80003c4639d8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615
fdrop(fffffd806b39fea8,ffff80003c4639d8) at fdrop+0x121 sys/kern/kern_descrip.c:1267
closef(fffffd806b39fea8,ffff80003c4639d8) at closef+0x192 sys/kern/kern_descrip.c:1251
fdfree(ffff80003c4639d8) at fdfree+0x116 sys/kern/kern_descrip.c:1182
exit1(ffff80003c4639d8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215
sys_exit(ffff80003c4639d8,ffff80002a3ad040,ffff80002a3acf90) at sys_exit+0x1a sys/kern/kern_exit.c:-1
syscall(ffff80002a3ad040) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a3ad040) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7e74b1fc36b0, count: -12
---
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.
If the report is already addressed, let syzbot know by replying with:
#syz fix: exact-commit-title
If you want to overwrite report's subsystems, reply with:
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(See the list of subsystem names on the web dashboard)
If the report is a duplicate of another one, reply with:
#syz dup: exact-subject-of-another-report
If you want to undo deduplication, reply with:
#syz undup
syzbot found the following issue on:
HEAD commit: 3b565b651350 vioscsi: Get max_luns from host
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=15f262a2580000
kernel config: https://syzkaller.appspot.com/x/.config?x=7058272de1526588
dashboard link: https://syzkaller.appspot.com/bug?extid=1ee7b3d649b3fd543300
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/adecca019341/disk-3b565b65.raw.xz
bsd.gdb: https://storage.googleapis.com/syzbot-assets/837e63c7f6b3/bsd-3b565b65.gdb.xz
kernel image: https://storage.googleapis.com/syzbot-assets/42d486e428d2/kernel-3b565b65.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+1ee7b3...@syzkaller.appspotmail.com
uvm_fault(0xfffffd806b80db90, 0x0, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at dt_ioctl_record_stop+0x108: movq 0(%r14),%r14
TID PID UID PRFLAGS PFLAGS CPU COMMAND
460246 93889 0 0x2 0 0 syz-executor
dt_ioctl_record_stop(ffff800001497000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586
dtclose(21e5f,1,2000,ffff80003c4639d8) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline]
dtclose(21e5f,1,2000,ffff80003c4639d8) at dtclose+0x109 sys/dev/dt/dt_dev.c:232
spec_close(ffff80002a3accd0) at spec_close+0x466 sys/kern/spec_vnops.c:-1
VOP_CLOSE(fffffd807071fb58,1,fffffd80097fb1a0,ffff80003c4639d8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156
vn_closefile(fffffd806b39fea8,ffff80003c4639d8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline]
vn_closefile(fffffd806b39fea8,ffff80003c4639d8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615
fdrop(fffffd806b39fea8,ffff80003c4639d8) at fdrop+0x121 sys/kern/kern_descrip.c:1267
closef(fffffd806b39fea8,ffff80003c4639d8) at closef+0x192 sys/kern/kern_descrip.c:1251
fdfree(ffff80003c4639d8) at fdfree+0x116 sys/kern/kern_descrip.c:1182
exit1(ffff80003c4639d8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215
sys_exit(ffff80003c4639d8,ffff80002a3ad040,ffff80002a3acf90) at sys_exit+0x1a sys/kern/kern_exit.c:-1
syscall(ffff80002a3ad040) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a3ad040) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7e74b1fc36b0, count: 3
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: uvm_fault(0xfffffd806b80db90, 0x0, 0, 1) -> e
ddb{1}> trace
dt_ioctl_record_stop(ffff800001497000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586
dtclose(21e5f,1,2000,ffff80003c4639d8) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline]
dtclose(21e5f,1,2000,ffff80003c4639d8) at dtclose+0x109 sys/dev/dt/dt_dev.c:232
spec_close(ffff80002a3accd0) at spec_close+0x466 sys/kern/spec_vnops.c:-1
VOP_CLOSE(fffffd807071fb58,1,fffffd80097fb1a0,ffff80003c4639d8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156
vn_closefile(fffffd806b39fea8,ffff80003c4639d8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline]
vn_closefile(fffffd806b39fea8,ffff80003c4639d8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615
fdrop(fffffd806b39fea8,ffff80003c4639d8) at fdrop+0x121 sys/kern/kern_descrip.c:1267
closef(fffffd806b39fea8,ffff80003c4639d8) at closef+0x192 sys/kern/kern_descrip.c:1251
fdfree(ffff80003c4639d8) at fdfree+0x116 sys/kern/kern_descrip.c:1182
exit1(ffff80003c4639d8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215
sys_exit(ffff80003c4639d8,ffff80002a3ad040,ffff80002a3acf90) at sys_exit+0x1a sys/kern/kern_exit.c:-1
syscall(ffff80002a3ad040) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a3ad040) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7e74b1fc36b0, count: -12
ddb{1}> show registers
rdi 0
rsi 0
rbp 0xffff80002a3acc00
rbx 0x1
rdx 0
rcx 0xffff80003c4639d8
rax 0xffffffff8377f4c8 dt_prov_syscall
r8 0
r9 0x1
r10 0x5241cde580fc0cc
r11 0x86330398c4e8029d
r12 0
r13 0
r14 0
r15 0xffff8000014b3800
rip 0xffffffff823896a8 dt_ioctl_record_stop+0x108
cs 0x8
rflags 0x10207 __ALIGN_SIZE+0xf207
rsp 0xffff80002a3acbd0
ss 0x10
dt_ioctl_record_stop+0x108: movq 0(%r14),%r14
ddb{1}> show proc
PROC (syz-executor) tid=332037 pid=54059 tcnt=0 stat=onproc
flags process=1008<EXITING,SINGLEEXIT> proc=2000<WEXIT>
runpri=32, usrpri=83, slppri=32, nice=20
wchan=0x0, wmesg=, ps_single=0xffff80003c4639d8 scnt=-1 ecnt=1
forw=0xffffffffffffffff, list=0xffff80003c462a78,0xffff80003c462568
process=0xffff80003c4b8508 user=0xffff80002a3a8000, vmspace=0xfffffd806b80db90
estcpu=33, cpticks=5, pctcpu=0.0, user=0, sys=0, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
77070 310868 47370 0 2 0 syz-executor
77070 518800 47370 0 3 0x4000080 fsleep syz-executor
39558 76876 48519 0 2 0 syz-executor
39558 307161 48519 0 3 0x4000080 fsleep syz-executor
65109 138593 20403 0 2 0 syz-executor
65109 392028 20403 0 3 0x4000080 fsleep syz-executor
65109 157998 20403 0 3 0x4000080 fsleep syz-executor
65109 383096 20403 0 3 0x4000080 fsleep syz-executor
80213 466550 86738 0 3 0x3000 suspend syz-executor
80213 385172 86738 0 2 0x4081000 syz-executor
80213 520159 86738 0 3 0x4081000 inode syz-executor
36623 176529 60516 0 3 0x82 nanoslp syz-executor
23752 308349 1 0 3 0x100083 ttyopn getty
34999 33785 0 0 3 0x14200 acct acct
96208 174959 0 0 3 0x14200 bored sosplice
76512 418536 60516 0 3 0x2 biowait syz-executor
20403 297754 60516 0 3 0x82 nanoslp syz-executor
93889 460246 60516 0 7 0x2 syz-executor
48519 332387 60516 0 3 0x82 nanoslp syz-executor
14772 435846 60516 0 3 0x82 nanoslp syz-executor
47370 265643 60516 0 3 0x82 nanoslp syz-executor
86738 194563 60516 0 3 0x82 wait syz-executor
60516 388485 10486 0 3 0x82 nanoslp syz-executor
10486 75936 75168 0 3 0x10008a sigsusp ksh
75168 287109 58985 0 3 0x98 kqread sshd-session
58985 505147 29831 0 3 0x92 kqread sshd-session
29831 148270 1 0 3 0x88 kqread sshd
41635 6492 52740 74 3 0x1100092 bpf pflogd
52740 180403 1 0 3 0x80 sbwait pflogd
86156 106819 44831 73 3 0x1100090 kqread syslogd
44831 189099 1 0 3 0x100082 sbwait syslogd
96717 26960 1 0 3 0x100080 kqread resolvd
72699 184102 86765 77 3 0x100092 kqread dhcpleased
60404 319349 86765 77 3 0x100092 kqread dhcpleased
86765 508608 1 0 3 0x80 kqread dhcpleased
59044 444073 0 0 3 0x14200 bored smr
89186 224981 0 0 3 0x14200 pgzero zerothread
9297 104019 0 0 3 0x14200 aiodoned aiodoned
70134 431514 0 0 3 0x14200 syncer update
48288 8208 0 0 3 0x14200 cleaner cleaner
237 479351 0 0 2 0x14200 reaper
20302 338060 0 0 3 0x14200 pgdaemon pagedaemon
80909 330025 0 0 3 0x14200 bored viomb
33900 508373 0 0 3 0x40014200 acpi0 acpi0
17027 53454 0 0 3 0x40014200 idle1
73217 92551 0 0 3 0x14200 bored softnet7
59567 282637 0 0 3 0x14200 bored softnet6
52689 186646 0 0 3 0x14200 bored softnet5
35319 32898 0 0 3 0x14200 bored softnet4
80870 490659 0 0 3 0x14200 bored softnet3
1406 452560 0 0 3 0x14200 bored softnet2
69151 508050 0 0 3 0x14200 bored softnet1
96550 407893 0 0 3 0x14200 bored softnet0
40682 453042 0 0 3 0x14200 bored systqmp
84745 155709 0 0 3 0x14200 bored systq
15283 357904 0 0 3 0x14200 tmoslp softclockmp
46291 507645 0 0 3 0x40014200 tmoslp softclock
23210 405870 0 0 3 0x40014200 idle0
1 74407 0 0 3 0x82 wait init
0 0 -1 0 3 0x10010200 scheduler swapper
ddb{1}> show all locks
Process 80213 (syz-executor) thread 0xffff8000ffff3490 (385172)
exclusive rrwlock inode r = 0 (0xfffffd806ea10240)
#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+0xa3 sys/kern/vfs_vops.c:527
#4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570
#5 vn_write+0x18f sys/kern/vfs_vnops.c:405
#6 dofilewritev+0x242 sys/kern/sys_generic.c:380
#7 sys_write+0xa2 sys/kern/sys_generic.c:300
#8 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#8 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748
#9 Xsyscall+0x128
Process 80213 (syz-executor) thread 0xffff80003600a7f0 (520159)
exclusive rrwlock inode r = 0 (0xfffffd806b9496a8)
#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+0xa3 sys/kern/vfs_vops.c:527
#4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570
#5 vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1
#6 namei+0x7ca sys/kern/vfs_lookup.c:250
#7 vn_open+0x15a sys/kern/vfs_vnops.c:140
#8 doopenat+0x35b sys/kern/vfs_syscalls.c:1137
#9 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#9 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748
#10 Xsyscall+0x128
Process 76512 (syz-executor) thread 0xffff8000ffff39b0 (418536)
exclusive rrwlock inode r = 0 (0xfffffd806e1cec98)
#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+0xa3 sys/kern/vfs_vops.c:527
#4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570
#5 vget+0x2a2 sys/kern/vfs_subr.c:693
#6 ufs_ihashget+0x185 sys/ufs/ufs/ufs_ihash.c:98
#7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1203
#8 ufs_lookup+0x1a36 sys/ufs/ufs/ufs_lookup.c:478
#9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
#10 vfs_lookup+0x93a sys/kern/vfs_lookup.c:566
#11 namei+0x7ca sys/kern/vfs_lookup.c:250
#12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1864
#13 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#13 syscall+0xb17 sys/arch/amd64/amd64/trap.c:748
#14 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd806c0eb328)
#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+0xa3 sys/kern/vfs_vops.c:527
#4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570
#5 vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1
#6 namei+0x7ca sys/kern/vfs_lookup.c:250
#7 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1864
#8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:748
#9 Xsyscall+0x128
Process 93889 (syz-executor) thread 0xffff8000ffff2f70 (460246)
exclusive rwlock vmmaplk r = 0 (0xfffffd806fd8f110)
#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 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5168
#3 uvmspace_fork+0x12b sys/uvm/uvm_map.c:3738
#4 process_new+0x577 sys/kern/kern_fork.c:284
#5 fork1+0x3f6 sys/kern/kern_fork.c:-1
#6 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#6 syscall+0xb17 sys/arch/amd64/amd64/trap.c:748
#7 Xsyscall+0x128
exclusive rwlock vmmaplk r = 0 (0xfffffd800b027a88)
#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 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5168
#3 uvmspace_fork+0x44 sys/uvm/uvm_map.c:3729
#4 process_new+0x577 sys/kern/kern_fork.c:284
#5 fork1+0x3f6 sys/kern/kern_fork.c:-1
#6 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#6 syscall+0xb17 sys/arch/amd64/amd64/trap.c:748
#7 Xsyscall+0x128
Process 237 (reaper) thread 0xffff8000ffffc7b8 (479351)
exclusive rwlock kmmaplk r = 0 (0xffffffff83914dc8)
#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 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5168
#3 uvm_unmap+0x7d sys/uvm/uvm_map.c:1792
#4 km_free+0x87 sys/uvm/uvm_km.c:831
#5 uvm_uarea_free+0x4f sys/uvm/uvm_glue.c:304
#6 reaper+0x1aa sys/kern/kern_exit.c:493
#7 proc_trampoline+0x10
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10234 11053K 11709K 166960K 11967 0
pcb 20 14K 14K 166960K 192 0
rtable 148 7K 8K 166960K 426 0
pf 28 16K 18K 166960K 105 0
ifaddr 29 5K 7K 166960K 83 0
ifgroup 43 2K 2K 166960K 122 0
sysctl 4 1K 9K 166960K 14 0
counters 62 36K 37K 166960K 142 0
ioctlops 0 0K 4K 166960K 1616 0
iov 0 0K 32K 166960K 51 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1364 86K 86K 166960K 1923 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 5K 166960K 13 0
VM map 2 1K 1K 166960K 2 0
sem 12 0K 0K 166960K 43 0
dirhash 12 2K 2K 166960K 15 0
ACPI 1692 195K 286K 166960K 12470 0
file desc 17 61K 85K 166960K 946 0
sigio 0 0K 0K 166960K 47 0
proc 72 115K 180K 166960K 668 0
subproc 72 4K 4K 166960K 81 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 141 0
in_multi 56 4K 7K 166960K 143 0
ether_multi 1 0K 0K 166960K 6 0
mrt 1 0K 0K 166960K 2 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 253 1129K 1129K 166960K 253 0
exec 0 0K 1K 166960K 460 0
fusefs mount 1 32K 32K 166960K 1 0
pfkey data 0 0K 0K 166960K 2 0
tdb 3 0K 0K 166960K 3 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 234 159K 177K 166960K 10721 0
UVM aobj 23 2K 2K 166960K 25 0
pinsyscall 42 84K 103K 166960K 2093 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 1K 166960K 58 0
NDP 9 0K 2K 166960K 56 0
temp 76 8648K 8716K 166960K 51356 0
kqueue 14 22K 32K 166960K 183 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 99 0 96 1 0 1 1 0 8 0
rtentry 176 143 0 89 5 0 5 5 0 8 0
unpcb 144 576 0 559 5 3 2 4 0 8 1
syncache 336 4 0 4 2 2 0 1 0 8 0
tcpcb 736 314 0 307 11 9 2 10 0 8 1
arp 128 14 0 7 1 0 1 1 0 8 0
inpcb 328 1077 0 1062 21 14 7 12 0 8 5
nd6 144 41 0 29 2 0 2 2 0 8 1
pkpcb 40 71 0 71 2 1 1 1 0 8 1
kcovpl 48 9 0 1 1 0 1 1 0 8 0
ppxss 1192 31 0 31 1 0 1 1 0 8 1
pppxif 1504 6 0 6 1 1 0 1 0 8 0
pffrag 232 9 0 4 1 0 1 1 0 482 0
pffrnode 88 9 0 4 1 0 1 1 0 8 0
pffrent 40 16 0 11 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 24 104 0 24 1 0 1 1 0 8 0
pfstkey 128 104 0 24 3 0 3 3 0 8 0
pfstate 384 104 0 24 9 0 9 9 0 8 0
pfrule 1344 23 0 17 2 1 1 2 0 8 0
art_heap8 4096 2 0 1 2 1 1 2 0 8 0
art_heap4 256 823 0 575 36 4 32 32 0 8 11
art_table 40 825 0 576 6 0 6 6 0 8 1
art_node 32 142 0 96 1 0 1 1 0 8 0
sysvmsgpl 40 43 0 41 1 0 1 1 0 8 0
semupl 112 1 0 1 1 1 0 1 0 8 0
semapl 112 37 0 27 1 0 1 1 0 8 0
shmpl 112 22 0 2 1 0 1 1 0 8 0
dirhash 1024 19 0 2 3 0 3 3 0 8 0
dino2pl 256 3201 0 1693 95 0 95 95 0 8 0
ffsino 296 3201 0 1693 117 0 117 117 0 8 0
nchpl 144 4570 0 4028 64 31 33 64 0 8 8
rtmask 32 1 0 1 1 0 1 1 0 8 1
uvmvnodes 80 3509 0 0 72 0 72 72 0 8 0
vnodes 216 3509 0 0 195 0 195 195 0 8 0
namei 1024 14975 0 14974 3 2 1 2 0 8 0
percpumem 16 86 0 40 1 0 1 1 0 8 0
kstatmem 264 78 0 58 3 1 2 3 0 8 0
acpiwqpl 32 1 0 1 1 0 1 1 1 8 1
scsiplug 72 6 0 6 3 2 1 1 0 8 1
scxspl 216 36170 0 36169 12 9 3 8 1 8 2
plimitpl 152 294 0 275 1 0 1 1 0 8 0
sigapl 424 1280 0 1225 9 1 8 9 0 8 0
knotepl 120 624 0 0 19 0 19 19 0 8 0
kqueuepl 224 307 0 296 2 1 1 2 0 8 0
pipepl 344 331 0 304 17 11 6 9 0 8 3
fdescpl 528 1236 0 1205 3 0 3 3 0 8 0
filepl 160 7594 0 7369 23 8 15 17 0 8 3
lockfpl 104 460 0 458 2 0 2 2 0 8 1
lockfspl 48 165 0 163 1 0 1 1 0 8 0
sessionpl 144 26 0 17 1 0 1 1 0 8 0
pgrppl 48 48 0 31 1 0 1 1 0 8 0
ucredpl 104 1005 0 992 1 0 1 1 0 8 0
zombiepl 144 1582 0 1579 1 0 1 1 0 8 0
processpl 1248 1280 0 1225 6 0 6 6 0 8 0
procpl 656 2732 0 2669 9 2 7 8 0 8 0
sosppl 168 4 0 4 2 2 0 1 0 8 0
sockpl 752 1838 0 1803 32 21 11 17 0 8 7
mcl64k 65536 5 0 0 1 0 1 1 0 8 0
mcl16k 16384 3 0 0 1 0 1 1 0 8 0
mcl12k 12288 1 0 0 1 0 1 1 0 8 0
mcl9k 9216 1 0 0 1 0 1 1 0 8 0
mcl8k 8192 4 0 0 1 0 1 1 0 8 0
mcl4k 4096 113 0 0 15 0 15 15 0 8 0
mcl2k 2048 25 0 0 4 0 4 4 0 8 0
mtagpl 96 4 0 0 1 0 1 1 0 8 0
mbufpl 256 252 0 0 15 0 15 15 0 8 0
bufpl 280 15407 0 9263 440 0 440 440 0 8 0
anonpl 32 15859 0 0 128 0 128 128 0 246 0
amapchunkpl 152 35785 0 35308 46 11 35 35 0 158 13
amappl16 200 5375 0 5185 54 39 15 42 0 8 0
amappl15 192 7 0 6 1 0 1 1 0 8 0
amappl14 184 122 0 110 1 0 1 1 0 8 0
amappl13 176 7 0 6 1 0 1 1 0 8 0
amappl12 168 1914 0 1884 3 1 2 2 0 8 0
amappl11 160 58 0 44 1 0 1 1 0 8 0
amappl10 152 5 0 5 1 1 0 1 0 8 0
amappl9 144 248 0 248 1 1 0 1 0 8 0
amappl8 136 27 0 24 1 0 1 1 0 8 0
amappl7 128 110 0 98 1 0 1 1 0 8 0
amappl6 120 188 0 184 1 0 1 1 0 8 0
amappl5 112 127 0 117 1 0 1 1 0 8 0
amappl4 104 312 0 289 1 0 1 1 0 8 0
amappl3 96 6899 0 6791 5 1 4 4 0 8 0
amappl2 88 675 0 613 2 0 2 2 0 8 0
amappl1 80 12084 0 11486 15 1 14 15 0 8 0
amappl 88 9839 0 9677 5 0 5 5 0 92 0
dma4096 4096 2 0 2 2 2 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 128 254 0 254 2 1 1 1 0 8 1
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 24 0 2 1 0 1 1 0 8 0
uaddrrnd 24 1236 0 1205 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 1236 0 1205 1 0 1 1 0 8 0
vmmpekpl 168 12021 0 11977 3 0 3 3 0 8 0
vmmpepl 168 84969 0 82833 125 8 117 120 0 357 16
vmsppl 488 1235 0 1205 5 0 5 5 0 8 0
rwobjpl 80 28817 0 24194 96 0 96 96 0 8 0
pdppl 4096 2480 0 2410 104 32 72 82 0 8 2
pvpl 32 21138 0 0 171 0 171 171 0 265 0
pmappl 256 1235 0 1205 3 0 3 3 0 8 0
extentpl 40 45 0 27 1 0 1 1 0 8 0
phpool 112 300 0 53 8 0 8 8 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x27: addq $0x8,%rsp
x86_ipi_db(ffffffff837dcff0) 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
__mp_lock(ffffffff839c3480) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline]
__mp_lock(ffffffff839c3480) at __mp_lock+0x192 sys/kern/kern_lock.c:165
intr_handler(ffff80002a39d450,ffff800000079a80) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:559
Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f
__mp_lock(ffffffff839c3480) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline]
__mp_lock(ffffffff839c3480) at __mp_lock+0x192 sys/kern/kern_lock.c:165
__mp_acquire_count(ffffffff839c3480,1) at __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1
pool_get(ffffffff8386d6d0,1) at pool_get+0x266 sys/kern/subr_pool.c:588
uvm_mapent_alloc(fffffd806fd8f010,0) at uvm_mapent_alloc+0x354 sys/uvm/uvm_map.c:-1
uvm_map_mkentry(fffffd806fd8f010,fffffd806b966828,fffffd806b966828,200000000000,1000000,0,16333265d603b078,1000000) at uvm_map_mkentry+0x87 sys/uvm/uvm_map.c:-1
uvm_mapent_clone(fffffd806fd8f010,200000000000,1000000,0,3,7,b34bf5632f501dab,fffffd806bf4d8d8,ffff80002a39d8a8,fffffd806fd8f010) at uvm_mapent_clone+0xba sys/uvm/uvm_map.c:3467
uvm_mapent_forkcopy(1,fffffd806fd8f010,fffffd800b027988,fffffd806bf4d8d8,ffff80002a39d8a8) at uvm_mapent_forkcopy+0x6f sys/uvm/uvm_map.c:3559
uvmspace_fork(ffff80002a2c3a98) at uvmspace_fork+0x299 sys/uvm/uvm_map.c:3762
end trace frame: 0xffff80002a39d990, count: 0
ddb{0}> trace
x86_ipi_db(ffffffff837dcff0) 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
__mp_lock(ffffffff839c3480) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline]
__mp_lock(ffffffff839c3480) at __mp_lock+0x192 sys/kern/kern_lock.c:165
intr_handler(ffff80002a39d450,ffff800000079a80) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:559
Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f
__mp_lock(ffffffff839c3480) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline]
__mp_lock(ffffffff839c3480) at __mp_lock+0x192 sys/kern/kern_lock.c:165
__mp_acquire_count(ffffffff839c3480,1) at __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1
pool_get(ffffffff8386d6d0,1) at pool_get+0x266 sys/kern/subr_pool.c:588
uvm_mapent_alloc(fffffd806fd8f010,0) at uvm_mapent_alloc+0x354 sys/uvm/uvm_map.c:-1
uvm_map_mkentry(fffffd806fd8f010,fffffd806b966828,fffffd806b966828,200000000000,1000000,0,16333265d603b078,1000000) at uvm_map_mkentry+0x87 sys/uvm/uvm_map.c:-1
uvm_mapent_clone(fffffd806fd8f010,200000000000,1000000,0,3,7,b34bf5632f501dab,fffffd806bf4d8d8,ffff80002a39d8a8,fffffd806fd8f010) at uvm_mapent_clone+0xba sys/uvm/uvm_map.c:3467
uvm_mapent_forkcopy(1,fffffd806fd8f010,fffffd800b027988,fffffd806bf4d8d8,ffff80002a39d8a8) at uvm_mapent_forkcopy+0x6f sys/uvm/uvm_map.c:3559
uvmspace_fork(ffff80002a2c3a98) at uvmspace_fork+0x299 sys/uvm/uvm_map.c:3762
process_new(ffff80003600b230,ffff80002a2c3a98,1) at process_new+0x577 sys/kern/kern_fork.c:284
fork1(ffff8000ffff2f70,1,ffffffff8326def0,0,ffff80002a39da80,0) at fork1+0x3f6 sys/kern/kern_fork.c:-1
syscall(ffff80002a39db30) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a39db30) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7745eae75f50, count: -18
ddb{0}> machine ddbcpu 1
Stopped at dt_ioctl_record_stop+0x108: movq 0(%r14),%r14
dt_ioctl_record_stop(ffff800001497000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586
dtclose(21e5f,1,2000,ffff80003c4639d8) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline]
dtclose(21e5f,1,2000,ffff80003c4639d8) at dtclose+0x109 sys/dev/dt/dt_dev.c:232
spec_close(ffff80002a3accd0) at spec_close+0x466 sys/kern/spec_vnops.c:-1
VOP_CLOSE(fffffd807071fb58,1,fffffd80097fb1a0,ffff80003c4639d8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156
vn_closefile(fffffd806b39fea8,ffff80003c4639d8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline]
vn_closefile(fffffd806b39fea8,ffff80003c4639d8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615
fdrop(fffffd806b39fea8,ffff80003c4639d8) at fdrop+0x121 sys/kern/kern_descrip.c:1267
closef(fffffd806b39fea8,ffff80003c4639d8) at closef+0x192 sys/kern/kern_descrip.c:1251
fdfree(ffff80003c4639d8) at fdfree+0x116 sys/kern/kern_descrip.c:1182
exit1(ffff80003c4639d8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215
sys_exit(ffff80003c4639d8,ffff80002a3ad040,ffff80002a3acf90) at sys_exit+0x1a sys/kern/kern_exit.c:-1
syscall(ffff80002a3ad040) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a3ad040) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7e74b1fc36b0, count: 3
ddb{1}> trace
dt_ioctl_record_stop(ffff800001497000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586
dtclose(21e5f,1,2000,ffff80003c4639d8) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline]
dtclose(21e5f,1,2000,ffff80003c4639d8) at dtclose+0x109 sys/dev/dt/dt_dev.c:232
spec_close(ffff80002a3accd0) at spec_close+0x466 sys/kern/spec_vnops.c:-1
VOP_CLOSE(fffffd807071fb58,1,fffffd80097fb1a0,ffff80003c4639d8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156
vn_closefile(fffffd806b39fea8,ffff80003c4639d8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline]
vn_closefile(fffffd806b39fea8,ffff80003c4639d8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615
fdrop(fffffd806b39fea8,ffff80003c4639d8) at fdrop+0x121 sys/kern/kern_descrip.c:1267
closef(fffffd806b39fea8,ffff80003c4639d8) at closef+0x192 sys/kern/kern_descrip.c:1251
fdfree(ffff80003c4639d8) at fdfree+0x116 sys/kern/kern_descrip.c:1182
exit1(ffff80003c4639d8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215
sys_exit(ffff80003c4639d8,ffff80002a3ad040,ffff80002a3acf90) at sys_exit+0x1a sys/kern/kern_exit.c:-1
syscall(ffff80002a3ad040) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a3ad040) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7e74b1fc36b0, count: -12
---
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