Bug in kernel using e4defrag

Today wing morning, first thing, run: sudo e4defrag /dev/sda6
sda6 is the /home. Then to check how the process was progressing, I find the black screen with a description that does not pay much attention. No functioned (Alt+F1) keys to enter a tty. In syslog I find a bug. Here follow the trace:

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Apr 16 07:40:17 computer-name kernel: [ 5594.458550] BUG: unable to handle kernel paging request at 0000000003433687
Apr 16 07:40:17 computer-name kernel: [ 5594.458615] IP: [] __kmalloc+0x94/0x260
Apr 16 07:40:17 computer-name kernel: [ 5594.458638] PGD 116b16067 PUD 117928067 PMD 0
Apr 16 07:40:17 computer-name kernel: [ 5594.458655] Oops: 0000 [#1] PREEMPT SMP
Apr 16 07:40:17 computer-name kernel: [ 5594.458671] Modules linked in: ipt_MASQUERADE iptable_nat nf_nat_ipv4 xt_CHECKSUM iptable_mangle bridge stp llc ctr ccm ebtable_nat ebtables bnep rfcomm bluetooth binfmt_misc ip6t_REJECT xt_hl ip6t_rt nf_conntrack_ipv6 nf_defrag_ipv6 ipt_REJECT xt_LOG xt_limit xt_tcpudp xt_addrtype nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack ip6table_filter ip6_tables nf_conntrack_netbios_ns nf_conntrack_broadcast nf_nat_ftp nf_nat nf_conntrack_ftp nf_conntrack iptable_filter ip_tables x_tables acer_wmi sparse_keymap arc4 snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_pcm ath9k intel_rapl x86_pkg_temp_thermal intel_powerclamp ath9k_common coretemp ath9k_hw snd_page_alloc kvm_intel snd_seq_midi ath snd_seq_midi_event kvm dm_multipath snd_rawmidi scsi_dh mac80211 crct10dif_pclmul crc32_pclmul ghash_clmulni_intel snd_seq aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper uvcvideo cryptd cfg80211 videobuf2_vmalloc joydev videobuf2_memops videobuf2_core snd_seq_device serio_raw snd_timer snd lpc_ich soundcore mei_me mei shpchp mac_hid parport_pc ppdev videodev lp parport btrfs libcrc32c raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq raid1 raid0 multipath linear dm_mirror dm_region_hash dm_log hid_generic usbhid hid i915 psmouse ahci i2c_algo_bit tg3 libahci drm_kms_helper sdhci_pci ptp sdhci drm pps_core wmi video
Apr 16 07:40:17 computer-name kernel: [ 5594.459143] CPU: 1 PID: 3352 Comm: e4defrag Not tainted 3.13.0-48-lowlatency #80+7.0trisquel2
Apr 16 07:40:17 computer-name kernel: [ 5594.459170] Hardware name: Acer Aspire 4752/Aspire 4752, BIOS V2.10 08/25/2011
Apr 16 07:40:17 computer-name kernel: [ 5594.459193] task: ffff88007cfe1820 ti: ffff88011587a000 task.ti: ffff88011587a000
Apr 16 07:40:17 computer-name kernel: [ 5594.459216] RIP: 0010:[] [] __kmalloc+0x94/0x260
Apr 16 07:40:17 computer-name kernel: [ 5594.459242] RSP: 0018:ffff88011587bcb0 EFLAGS: 00010282
Apr 16 07:40:17 computer-name kernel: [ 5594.459259] RAX: 0000000000000000 RBX: ffff88006f75d7b8 RCX: 000000005da23201
Apr 16 07:40:17 computer-name kernel: [ 5594.459281] RDX: 000000005da23101 RSI: 0000000000000000 RDI: 000000000000000a
Apr 16 07:40:17 computer-name kernel: [ 5594.459303] RBP: ffff88011587bce0 R08: 0000000000016440 R09: ffff88011b003a00
Apr 16 07:40:17 computer-name kernel: [ 5594.459325] R10: ffffffff8123f8a4 R11: 0000000004040404 R12: 0000000003433687
Apr 16 07:40:17 computer-name kernel: [ 5594.459347] R13: 0000000000000055 R14: 00000000000080d0 R15: ffff88011b003a00
Apr 16 07:40:17 computer-name kernel: [ 5594.459369] FS: 00007f4d0a9e7780(0000) GS:ffff88011fa40000(0000) knlGS:0000000000000000
Apr 16 07:40:17 computer-name kernel: [ 5594.459394] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Apr 16 07:40:17 computer-name kernel: [ 5594.459411] CR2: 0000000003433687 CR3: 00000001161ca000 CR4: 00000000000407e0
Apr 16 07:40:17 computer-name kernel: [ 5594.459433] Stack:
Apr 16 07:40:17 computer-name kernel: [ 5594.459440] ffff88011587bdc0 ffff88006f75d7b8 ffff88007cc17700 ffff880118ec30d0
Apr 16 07:40:17 computer-name kernel: [ 5594.459470] 00000000f9c2b750 0000000088ae5ccb ffff88011587bd18 ffffffff8123f8a4
Apr 16 07:40:17 computer-name kernel: [ 5594.459496] ffff88006f75d7b8 ffff88011587bdc0 ffff880069fd1b98 0000000000000000
Apr 16 07:40:17 computer-name kernel: [ 5594.459521] Call Trace:
Apr 16 07:40:17 computer-name kernel: [ 5594.459533] [] ext4_htree_store_dirent+0x34/0x120
Apr 16 07:40:17 computer-name kernel: [ 5594.459555] [] htree_dirblock_to_tree+0x169/0x190
Apr 16 07:40:17 computer-name kernel: [ 5594.459576] [] ext4_htree_fill_tree+0xc6/0x270
Apr 16 07:40:17 computer-name kernel: [ 5594.459597] [] ? putname+0x29/0x40
Apr 16 07:40:17 computer-name kernel: [ 5594.459615] [] ? aa_file_perm+0xa7/0x2a0
Apr 16 07:40:17 computer-name kernel: [ 5594.459634] [] ? kmem_cache_alloc_trace+0x1f6/0x220
Apr 16 07:40:17 computer-name kernel: [ 5594.459655] [] ? ext4_readdir+0x751/0x900
Apr 16 07:40:17 computer-name kernel: [ 5594.459674] [] ext4_readdir+0x185/0x900
Apr 16 07:40:17 computer-name kernel: [ 5594.459692] [] iterate_dir+0xa5/0xe0
Apr 16 07:40:17 computer-name kernel: [ 5594.459709] [] SyS_getdents+0x92/0x120
Apr 16 07:40:17 computer-name kernel: [ 5594.459726] [] ? fillonedir+0xe0/0xe0
Apr 16 07:40:17 computer-name kernel: [ 5594.459745] [] system_call_fastpath+0x1a/0x1f
Apr 16 07:40:17 computer-name kernel: [ 5594.459764] Code: eb 00 00 00 4d 8b 20 49 8b 40 10 4d 85 e4 0f 84 52 01 00 00 48 85 c0 0f 84 49 01 00 00 49 63 41 20 48 8d 8a 00 01 00 00 4d 8b 01 <49> 8b 1c 04 4c 89 e0 65 49 0f c7 08 0f 94 c0 84 c0 74 a0 49 63
Apr 16 07:40:17 computer-name kernel: [ 5594.459862] RIP [] __kmalloc+0x94/0x260
Apr 16 07:40:17 computer-name kernel: [ 5594.459881] RSP
Apr 16 07:40:17 computer-name kernel: [ 5594.459892] CR2: 0000000003433687
Apr 16 07:40:17 computer-name kernel: [ 5594.635121] ---[ end trace 024a237287c0b06e ]---
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Here's a bug that seems to be the same: https://bugzilla.kernel.org/show_bug.cgi?id=56241