I'm seeing this as well. My setup is a MacBook Pro running Mac OS 10.8.4 with VMWare Fusion 5.0.1

The problem happens after I remove an Aegis Secure Key 3.0 USB Memory Stick. After this  Oops it appears that no new processes can be created (I suspect some critical lock is left locked).

Apr  2 17:24:35 jis kernel: [ 6767.570440] BUG: unable to handle kernel paging request at 00007fd818601000
Apr  2 17:24:35 jis kernel: [ 6767.570445] IP: [<ffffffff811ca179>] anon_vma_clone+0x99/0x200
Apr  2 17:24:35 jis kernel: [ 6767.570454] PGD 2328eb067 PUD 232bbf067 PMD 151df8067 PTE 80000000a199d865
Apr  2 17:24:35 jis kernel: [ 6767.570457] Oops: 0003 [#1] SMP 
Apr  2 17:24:35 jis kernel: [ 6767.570459] Modules linked in: vmw_vsock_vmci_transport vsock rbd libceph libcrc32c nls_iso8859_1 uas usb_storage xt_multiport xt_CHECKSUM iptable_mangle ipt_REJECT nf_reject_ipv4 xt_tcpudp ebtable_filter ebtables ip6table_filter ip6_tables xt_conntrack ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 xt_addrtype iptable_filter ip_tables x_tables nf_nat nf_conntrack br_netfilter bridge stp llc aufs bnep snd_ens1371 snd_ac97_codec gameport ac97_bus vmw_balloon snd_pcm coretemp kvm_intel snd_seq_midi kvm irqbypass snd_seq_midi_event snd_rawmidi snd_seq joydev input_leds serio_raw snd_seq_device snd_timer btusb btrtl snd btbcm btintel bluetooth vmw_vmci soundcore i2c_piix4 shpchp irda crc_ccitt 8250_fintek mac_hid parport_pc ppdev lp parport autofs4 btrfs xor raid6_pq jitterentropy_rng drbg ansi_cprng algif_skcipher af_alg dm_crypt hid_generic usbhid hid crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd vmwgfx ttm drm_kms_helper syscopyarea psmouse sysfillrect mptspi sysimgblt mptscsih e1000 fb_sys_fops mptbase drm scsi_transport_spi pata_acpi floppy fjes
Apr  2 17:24:35 jis kernel: [ 6767.570495] CPU: 1 PID: 19193 Comm: unity-greeter Not tainted 4.4.0-15-generic #31-Ubuntu
Apr  2 17:24:35 jis kernel: [ 6767.570496] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 07/02/2012
Apr  2 17:24:35 jis kernel: [ 6767.570498] task: ffff88015dc40000 ti: ffff880219d14000 task.ti: ffff880219d14000
Apr  2 17:24:35 jis kernel: [ 6767.570499] RIP: 0010:[<ffffffff811ca179>]  [<ffffffff811ca179>] anon_vma_clone+0x99/0x200
Apr  2 17:24:35 jis kernel: [ 6767.570501] RSP: 0018:ffff880219d17d60  EFLAGS: 00010246
Apr  2 17:24:35 jis kernel: [ 6767.570502] RAX: ffff88015dc40000 RBX: ffff88009d68b9c8 RCX: 00000000001fd8fc
Apr  2 17:24:35 jis kernel: [ 6767.570502] RDX: 0000000000000000 RSI: 0000000002000200 RDI: ffff8802329b6418
Apr  2 17:24:35 jis kernel: [ 6767.570503] RBP: ffff880219d17da8 R08: ffff880236659fc0 R09: 00007fd818601000
Apr  2 17:24:35 jis kernel: [ 6767.570504] R10: 0000000000000006 R11: ffff88009d68b450 R12: ffff8802329b6410
Apr  2 17:24:35 jis kernel: [ 6767.570505] R13: ffff8801588b0380 R14: 00007fd818601000 R15: ffff8802329b6410
Apr  2 17:24:35 jis kernel: [ 6767.570506] FS:  00007fd826f91a40(0000) GS:ffff880236640000(0000) knlGS:0000000000000000
Apr  2 17:24:35 jis kernel: [ 6767.570507] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Apr  2 17:24:35 jis kernel: [ 6767.570507] CR2: 00007fd818601000 CR3: 000000014fab0000 CR4: 00000000001406e0
Apr  2 17:24:35 jis kernel: [ 6767.570540] Stack:
Apr  2 17:24:35 jis kernel: [ 6767.570541]  ffff880232bbf620 ffff880219823838 ffff88009d68ba40 ffff8802198238b0
Apr  2 17:24:35 jis kernel: [ 6767.570543]  ffff88009d68b9c8 ffff880219823838 ffff88009d68b9c8 0000000000000001
Apr  2 17:24:35 jis kernel: [ 6767.570544]  ffff8800b9cf3690 ffff880219d17de0 ffffffff811ca312 ffff880233e61a40
Apr  2 17:24:35 jis kernel: [ 6767.570545] Call Trace:
Apr  2 17:24:35 jis kernel: [ 6767.570548]  [<ffffffff811ca312>] anon_vma_fork+0x32/0x140
Apr  2 17:24:35 jis kernel: [ 6767.570587]  [<ffffffff8107e922>] copy_process+0x1482/0x1ad0
Apr  2 17:24:35 jis kernel: [ 6767.570589]  [<ffffffff8107f0d8>] _do_fork+0x78/0x360
Apr  2 17:24:35 jis kernel: [ 6767.570612]  [<ffffffff81208016>] ? filp_close+0x56/0x70
Apr  2 17:24:35 jis kernel: [ 6767.570614]  [<ffffffff8107f469>] SyS_clone+0x19/0x20
Apr  2 17:24:35 jis kernel: [ 6767.570619]  [<ffffffff81821ff2>] entry_SYSCALL_64_fastpath+0x16/0x71
Apr  2 17:24:35 jis kernel: [ 6767.570620] Code: c0 49 89 c6 0f 84 c3 00 00 00 4d 8b 7d 08 49 8b 17 4c 39 e2 74 15 4d 85 e4 0f 85 ee 00 00 00 48 8d 7a 08 49 89 d4 e8 d7 61 65 00 <49> 89 1e 4d 89 7e 08 49 8d 56 10 48 8b 73 78 48 8b 45 c8 4c 89 
Apr  2 17:24:35 jis kernel: [ 6767.570640] RIP  [<ffffffff811ca179>] anon_vma_clone+0x99/0x200
Apr  2 17:24:35 jis kernel: [ 6767.570642]  RSP <ffff880219d17d60>
Apr  2 17:24:35 jis kernel: [ 6767.570643] CR2: 00007fd818601000
Apr  2 17:24:35 jis kernel: [ 6767.570691] ---[ end trace 08bb426b0c544d5d ]---