[ 5867.679892] BUG: unable to handle kernel NULL pointer dereference at 0000000000000009
[ 5867.679929] IP: kmem_cache_free+0x19/0x1c0
[ 5867.679945] PGD 0
[ 5867.679945] P4D 0
[ 5867.679969] Oops: 0000 [#1] SMP
[ 5867.679981] Modules linked in: uas usb_storage rfcomm ccm xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 bridge stp llc ebtable_filter ebtables bnep binfmt_misc nls_iso8859_1 arc4 snd_hda_codec_hdmi snd_soc_skl snd_hda_codec_conexant snd_hda_codec_generic snd_soc_skl_ipc snd_soc_sst_ipc snd_soc_sst_dsp snd_hda_ext_core snd_soc_sst_match snd_soc_core snd_compress ac97_bus snd_pcm_dmaengine rtsx_usb_ms uvcvideo memstick videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_core snd_hda_intel videodev snd_hda_codec media snd_hda_core snd_hwdep snd_pcm intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm irqbypass btusb btrtl crct10dif_pclmul snd_seq_midi snd_seq_midi_event snd_rawmidi crc32_pclmul snd_seq ath10k_pci ghash_clmulni_intel
[ 5867.680215] pcbc ath10k_core aesni_intel aes_x86_64 crypto_simd hci_uart glue_helper snd_seq_device snd_timer snd ath cryptd btbcm serdev intel_cstate btqca soundcore mac80211 joydev intel_rapl_perf btintel ucsi bluetooth ip6t_REJECT cfg80211 input_leds serio_raw mei_me mei intel_lpss_acpi intel_lpss ecdh_generic ideapad_laptop intel_pch_thermal nf_reject_ipv6 sparse_keymap shpchp nf_log_ipv6 mac_hid tpm_crb acpi_pad xt_hl ip6t_rt nf_conntrack_ipv6 nf_defrag_ipv6 ipt_REJECT nf_reject_ipv4 nf_log_ipv4 nf_log_common 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 libcrc32c iptable_filter parport_pc ppdev lp parport ip_tables x_tables autofs4
[ 5867.680450] rtsx_usb_sdmmc rtsx_usb hid_generic usbhid i915 i2c_algo_bit drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ahci psmouse drm libahci r8169 mii wmi pinctrl_sunrisepoint i2c_hid video pinctrl_intel hid
[ 5867.680527] CPU: 0 PID: 3545 Comm: kworker/0:2 Not tainted 4.12.3-041203-generic #201707210343
[ 5867.680554] Hardware name: LENOVO 80UG/Toronto 4A2, BIOS 0XCN42WW 04/21/2017
[ 5867.680579] Workqueue: events __blk_release_queue
[ 5867.680596] task: ffff9e299a861700 task.stack: ffffb0d0c38ec000
[ 5867.680616] RIP: 0010:kmem_cache_free+0x19/0x1c0
[ 5867.680632] RSP: 0018:ffffb0d0c38efdb0 EFLAGS: 00010202
[ 5867.680650] RAX: ffffffffbda384b0 RBX: ffff9e29ea020900 RCX: 0000000000000003
[ 5867.680672] RDX: ffff9e29e898a3a0 RSI: ffff9e29ea020900 RDI: 0000000000000000
[ 5867.680695] RBP: ffffb0d0c38efdc8 R08: ffff9e29e898a320 R09: 0000000180800013
[ 5867.680718] R10: ffffb0d0c38efe10 R11: 0000000000000200 R12: 0000000000000000
[ 5867.680740] R13: ffff9e29f341b9c0 R14: ffff9e29f341f800 R15: 0000000000000000
[ 5867.680763] FS: 0000000000000000(0000) GS:ffff9e29f3400000(0000) knlGS:0000000000000000
[ 5867.680789] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5867.680807] CR2: 0000000000000009 CR3: 000000011fa09000 CR4: 00000000003406f0
[ 5867.680830] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5867.680853] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5867.680875] Call Trace:
[ 5867.680887] scsi_exit_rq+0x52/0x60
[ 5867.680901] free_request_size+0x21/0x30
[ 5867.680916] mempool_destroy+0x22/0x60
[ 5867.680930] blk_exit_rl+0x20/0x40
[ 5867.680943] __blk_release_queue+0x82/0x140
[ 5867.680958] process_one_work+0x1e9/0x410
[ 5867.680973] worker_thread+0x4b/0x410
[ 5867.680988] kthread+0x109/0x140
[ 5867.681000] ? process_one_work+0x410/0x410
[ 5867.681016] ? kthread_create_on_node+0x70/0x70
[ 5867.681032] ret_from_fork+0x25/0x30
[ 5867.681045] Code: e9 77 ff ff ff 0f 1f 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55 48 89 e5 41 55 41 54 49 89 fc 53 48 89 f3 0f 1f 44 00 00 <f6> 47 09 01 0f 85 97 00 00 00 4d 85 e4 0f 84 87 00 00 00 bf 00
[ 5867.682138] RIP: kmem_cache_free+0x19/0x1c0 RSP: ffffb0d0c38efdb0
[ 5867.683154] CR2: 0000000000000009
[ 5867.688195] ---[ end trace 365d8fd7ca814d11 ]---