Additional info:
reporter:       libreport-2.8.0
BUG: unable to handle kernel paging request at 000000ffffff9e8c
IP: [<ffffffffa1229d46>] __kmalloc_track_caller+0xc6/0x210
PGD 0 
Oops: 0000 [#1] SMP
Modules linked in: fuse xt_CHECKSUM ipt_MASQUERADE nf_nat_masquerade_ipv4 tun nf_conntrack_netbios_ns nf_conntrack_broadcast xt_CT ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 xt_conntrack ip_set nfnetlink ebtable_nat ebtable_broute bridge stp llc ip6table_mangle ip6table_security ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_raw iptable_mangle iptable_security iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_raw ebtable_filter ebtables ip6table_filter ip6_tables intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm uas usb_storage crct10dif_pclmul crc32_pclmul iTCO_wdt iTCO_vendor_support ghash_clmulni_intel intel_cstate intel_uncore intel_rapl_perf i2c_i801 i2c_smbus tpm_infineon arc4 snd_hda_codec_hdmi iwldvm snd_usb_audio
 snd_hda_codec_realtek joydev snd_hda_codec_generic mac80211 snd_usbmidi_lib snd_rawmidi snd_hda_intel uvcvideo videobuf2_vmalloc snd_hda_codec videobuf2_memops videobuf2_v4l2 videobuf2_core snd_hda_core videodev snd_hwdep snd_seq media lpc_ich snd_seq_device iwlwifi snd_pcm rtsx_pci_ms memstick cfg80211 snd_timer mei_me snd mei soundcore acpi_als kfifo_buf industrialio sony_laptop rfkill shpchp tpm_tis tpm_tis_core tpm nfsd auth_rpcgss nfs_acl lockd grace sunrpc hid_logitech_hidpp hid_logitech_dj radeon i915 rtsx_pci_sdmmc mmc_core i2c_algo_bit crc32c_intel drm_kms_helper ttm serio_raw drm r8169 mii rtsx_pci video fjes vfio_pci irqbypass vfio_iommu_type1 vfio_virqfd vfio
CPU: 3 PID: 5996 Comm: (ostnamed) Not tainted 4.8.6-300.fc25.x86_64 #1
Hardware name: Sony Corporation VPCSA290S/VAIO, BIOS R2087H4 06/15/2012
task: ffff9e8be3631e80 task.stack: ffff9e8bce664000
RIP: 0010:[<ffffffffa1229d46>]  [<ffffffffa1229d46>] __kmalloc_track_caller+0xc6/0x210
RSP: 0018:ffff9e8bce667d10  EFLAGS: 00010246
RAX: 000000ffffff9e8c RBX: 0000000000000000 RCX: 00000000000000b3
RDX: 000000000000a66f RSI: 0000000000000000 RDI: 000000000001c920
RBP: ffff9e8bce667d40 R08: ffff9e8c5fadc920 R09: ffff9e8c57003cc0
R10: 000000ffffff9e8c R11: 0000000000008391 R12: 00000000024000c0
R13: 0000000000000005 R14: ffffffffa11ddaf4 R15: ffff9e8c57003cc0
FS:  00007f2d92740d80(0000) GS:ffff9e8c5fac0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000ffffff9e8c CR3: 000000018c9b3000 CR4: 00000000000406e0
Stack:
 ffff9e8c57003cc0 ffff9e8c5467a1d8 0000000000000005 00000000024000c0
 ffff9e8c5467a1d8 ffff9e8c552d4800 ffff9e8bce667d68 ffffffffa11ddaa1
 ffff9e8bed1a5080 ffffffffa2233200 ffff9e8bed1a518c ffff9e8bce667d78
Call Trace:
 [<ffffffffa11ddaa1>] kstrdup+0x31/0x60
 [<ffffffffa11ddaf4>] kstrdup_const+0x24/0x30
 [<ffffffffa1271cd3>] alloc_vfsmnt+0xa3/0x210
 [<ffffffffa1271fa6>] clone_mnt+0x36/0x2b0
 [<ffffffffa1273b4c>] copy_tree+0x17c/0x320
 [<ffffffffa1274e56>] copy_mnt_ns+0x86/0x280
 [<ffffffffa10c1646>] ? create_new_namespaces+0x36/0x200
 [<ffffffffa10c1671>] create_new_namespaces+0x61/0x200
 [<ffffffffa10c19ba>] unshare_nsproxy_namespaces+0x5a/0xb0
 [<ffffffffa10a0659>] SyS_unshare+0x1c9/0x350
 [<ffffffffa1802572>] entry_SYSCALL_64_fastpath+0x1a/0xa4
Code: 49 83 78 10 00 4d 8b 10 0f 84 da 00 00 00 4d 85 d2 0f 84 d1 00 00 00 49 63 47 20 49 8b 3f 4c 01 d0 40 f6 c7 0f 0f 85 35 01 00 00 <48> 8b 18 48 8d 4a 01 4c 89 d0 65 48 0f c7 0f 0f 94 c0 84 c0 74 
RIP  [<ffffffffa1229d46>] __kmalloc_track_caller+0xc6/0x210
 RSP <ffff9e8bce667d10>
CR2: 000000ffffff9e8c