Fedora 18 VM freeze on executing dtrace about linux HOT 2 OPEN

Kernel trace for the above freeze

[ 255.056502] BUG: unable to handle kernel NULL pointer dereference at 0000000000000088
[ 255.206743] IP: [] do_fork+0x7f/0x390
[ 255.288124] PGD 5226d067 PUD 5226f067 PMD 0
[ 255.403241] Oops: 0000 [#1] SMP
[ 255.478247] Modules linked in: dtracedrv(POF) nls_utf8 fuse be2iscsi iscsi_boot_sysfs bnx2i cnic uio nf_conntrack_netbios_ns nf_conntrack_broadcast ipt_MASQUERADE cxgb4i cxgb4 ip6t_REJECT cxgb3i cxgb3 nf_conntrack_ipv6 nf_defrag_ipv6 mdio bnep xt_conntrack libcxgbi bluetooth rfkill ib_iser ebtable_nat ebtable_broute rdma_cm ib_addr iw_cm ib_cm ib_sa ib_mad ib_core bridge stp llc ebtable_filter ebtables ip6table_mangle ip6table_security vboxsf(OF) ip6table_raw ip6table_filter ip6_tables iptable_nat nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 iscsi_tcp libiscsi_tcp libiscsi nf_conntrack iptable_mangle iptable_security iptable_raw scsi_transport_iscsi vboxguest(OF) snd_intel8x0 snd_ac97_codec ac97_bus snd_seq snd_seq_device snd_pcm microcode serio_raw snd_page_alloc snd_timer snd i2c_piix4 ata_generic e1000 pata_acpi soundcore i2c_core uinput crc32c_intel ghash_clmulni_intel video
[ 256.749339] CPU 0
[ 256.790426] Pid: 2173, comm: bash Tainted: PF W O 3.6.10-4.fc18.x86_64 #1 innotek GmbH VirtualBox/VirtualBox
[ 256.946028] RIP: 0010:[] [] do_fork+0x7f/0x390
[ 257.036886] RSP: 0018:ffff880052335e60 EFLAGS: 00010246
[ 257.142717] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 257.238590] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
[ 257.322279] RBP: ffff880052335ee0 R08: 00007f2521dfda10 R09: 0000000000000000
[ 257.446151] R10: ffffffff8105bad0 R11: 0000000000000001 R12: 0000000001200011
[ 257.547077] R13: 0000000000000000 R14: 0000000000000000 R15: 000000000004e764
[ 257.603215] FS: 00007f2521dfd740(0000) GS:ffff88007fc00000(0000) knlGS:0000000000000000
[ 257.715640] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 257.736686] CR2: 0000000000000088 CR3: 00000000522a7000 CR4: 00000000000406f0
[ 257.746031] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 257.846076] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[ 257.934564] Process bash (pid: 2173, threadinfo ffff880052334000, task ffff8800520c4530)
[ 258.040287] Stack:
[ 258.064029] 0000000000000000 0000000000000000 00007f2521dfda10 00007f2521dfda10
[ 258.152221] 0000000000000000 0000000000000000 0000000000000000 0000000000000003
[ 258.188067] 0000000000000000 0000000001200011 ffff880052335ec0 0000000001200011
[ 258.211544] Call Trace:
[ 258.221379] [] dtrace_systrace_syscall_clone+0x58/0x100 [dtracedrv]
[ 258.234425] [] ? mm_init_owner+0x20/0x20
[ 258.335166] [] systrace_part1_sys_clone+0x69/0x8a [dtracedrv]
[ 258.401165] [] ? system_call_fastpath+0x16/0x1b
[ 258.475044] Code: c0 02 00 00 bf 07 00 00 00 e8 1e d3 00 00 84 c0 0f 84 ae 02 00 00 bf 06 00 00 00 e8 0c d3 00 00 84 c0 0f 84 9c 02 00 00 45 31 f6 83 88 00 00 00 03 74 4d 41 f7 c4 00 00 80 00 75 44 41 f7 c4
[ 258.693435] RIP [] do_fork+0x7f/0x390
[ 258.805604] RSP
[ 258.846311] CR2: 0000000000000088
[ 258.901218] ---[ end trace a01adafc957ef801 ]---

from linux.

The same for Ubuntu 16.04

Distributor ID: Ubuntu
Description:    Ubuntu 16.04.1 LTS
Release:    16.04
Codename:   xenial

Linux serce-linuxpc 4.4.0-36-generic #55-Ubuntu SMP Thu Aug 11 18:01:55 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

from linux.