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I am trying to reconnect several USB devices (ZTE MF823 modems) on the debian server and sometimes it makes the system crash , this is the output of dmesg -Hw

P.s It is using USB2

Any related information would be greatly appreciated! I have been trying to google all of these error messages without any luck so far. Thank you!

    [  +0.000053] scsi host43: usb-storage 4-1.1.1.3:1.0
[  +0.061006] scsi 13:0:0:0: CD-ROM            CWID     USB SCSI CD-ROM  2.31 PQ: 0 ANSI: 2
[  +0.182496] usb 4-1.1.1.5: reset high-speed USB device number 65 using ehci-pci
[  +0.019089] scsi 41:0:0:0: CD-ROM            CWID     USB SCSI CD-ROM  2.31 PQ: 0 ANSI: 2
[  +0.018755] sr 13:0:0:0: [sr35] scsi-1 drive
[  +0.000255] sr 13:0:0:0: Attached scsi CD-ROM sr35
[  +0.000104] sr 13:0:0:0: Attached scsi generic sg39 type 5
[  +0.071922] usb 4-1.1.1.5: device firmware changed
[  +0.035696] usb 4-1.1.5.6: USB disconnect, device number 87
[  +0.000086] cdc_ether 4-1.1.5.6:1.0 usb4: unregister 'cdc_ether' usb-0000:00:1d.0-1.1.5.6, ZTE CDC Ethernet Device
[  +0.042090] usb 4-1.1.3.3: new high-speed USB device number 95 using ehci-pci
[  +0.017341] scsi 42:0:0:0: CD-ROM            CWID     USB SCSI CD-ROM  2.31 PQ: 0 ANSI: 2
[  +0.000740] scsi 42:0:0:1: Direct-Access     ZTE      MMC Storage      2.31 PQ: 0 ANSI: 2
[  +0.055522] sr 41:0:0:0: [sr36] scsi-1 drive
[  +0.000399] sr 41:0:0:0: Attached scsi CD-ROM sr36
[  +0.000188] sr 41:0:0:0: Attached scsi generic sg35 type 5
[  +0.003139] sr 42:0:0:0: [sr32] scsi-1 drive
[  +0.000230] sr 42:0:0:0: Attached scsi CD-ROM sr32
[  +0.000137] sr 42:0:0:0: Attached scsi generic sg36 type 5
[  +0.000328] sd 42:0:0:1: Attached scsi generic sg40 type 0
[  +0.002958] ------------[ cut here ]------------
[  +0.000017] WARNING: CPU: 0 PID: 11007 at /build/linux-oA5nb9/linux-4.9.258/fs/sysfs/dir.c:31 sysfs_warn_dup+0x5d/0x70
[  +0.000002] sysfs: cannot create duplicate filename '/devices/virtual/bdi/8:80'
[  +0.000001] Modules linked in: uas cdc_ether usb_storage usbnet intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp hp_wmi iTCO_wdt iTCO_vendor_support snd_hda_codec_hdmi joydev sparse_keymap kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel intel_cstate intel_uncore intel_rapl_perf arc4 rt2800pci uvcvideo rt2800mmio evdev rt2800lib pcspkr videobuf2_vmalloc rt2x00pci videobuf2_memops rt2x00mmio snd_hda_codec_idt videobuf2_v4l2 btusb rt2x00lib btrtl videobuf2_core btbcm eeprom_93cx6 serio_raw snd_hda_codec_generic btintel sg mac80211 bluetooth videodev snd_hda_intel i915 media snd_hda_codec snd_hda_core cfg80211 snd_hwdep lpc_ich mfd_core snd_pcm crc_ccitt jmb38x_ms drm_kms_helper rfkill snd_timer memstick drm snd mei_me soundcore i2c_algo_bit shpchp mei wmi battery video hp_accel
[  +0.000078]  lis3lv02d input_polldev ac button ip_tables x_tables autofs4 ext4 crc16 jbd2 crc32c_generic fscrypto ecb glue_helper lrw gf128mul ablk_helper cryptd aes_x86_64 mbcache sr_mod cdrom sd_mod crc32c_intel ahci libahci psmouse libata scsi_mod xhci_pci xhci_hcd r8169 mii sdhci_pci ehci_pci sdhci ehci_hcd mmc_core usbcore usb_common thermal
[  +0.000041] CPU: 0 PID: 11007 Comm: kworker/u16:2 Not tainted 4.9.0-15-amd64 #1 Debian 4.9.258-1
[  +0.000002] Hardware name: Hewlett-Packard HP ProBook 4330s/167E, BIOS 68SRR Ver. F.23 03/09/2012
[  +0.000006] Workqueue: events_unbound async_run_entry_fn
[  +0.000002]  0000000000000000 ffffffff9f812017 ffffac3c094cfae8 0000000000000000
[  +0.000006]  ffffffff9f27a9eb ffff9fc836c1c000 ffffac3c094cfb40 ffff9fc834dde780
[  +0.000004]  ffff9fc8352d5b00 0000000000000000 0000000000000000 ffffffff9f27aa6f
[  +0.000004] Call Trace:
[  +0.000008]  [<ffffffff9f812017>] ? dump_stack+0x66/0x81
[  +0.000006]  [<ffffffff9f27a9eb>] ? __warn+0xcb/0xf0
[  +0.000003]  [<ffffffff9f27aa6f>] ? warn_slowpath_fmt+0x5f/0x80
[  +0.000005]  [<ffffffff9f48d60a>] ? kernfs_path_from_node+0x4a/0x60
[  +0.000003]  [<ffffffff9f490d8d>] ? sysfs_warn_dup+0x5d/0x70
[  +0.000003]  [<ffffffff9f490e60>] ? sysfs_create_dir_ns+0x70/0x80
[  +0.000004]  [<ffffffff9f53929d>] ? kobject_add_internal+0x9d/0x300
[  +0.000003]  [<ffffffff9f539575>] ? kobject_add+0x75/0xd0
[  +0.000004]  [<ffffffff9f683295>] ? device_add+0x135/0x610
[  +0.000003]  [<ffffffff9f683959>] ? device_create_groups_vargs+0xd9/0xf0
[  +0.000003]  [<ffffffff9f683988>] ? device_create_vargs+0x18/0x20
[  +0.000004]  [<ffffffff9f3a8eec>] ? bdi_register+0x8c/0x180
[  +0.000007]  [<ffffffffc02b8d97>] ? sd_revalidate_disk+0x277/0x1eb0 [sd_mod]
[  +0.000003]  [<ffffffff9f3a92b1>] ? bdi_register_owner+0x31/0x50
[  +0.000003]  [<ffffffff9f51a389>] ? device_add_disk+0x159/0x470
[  +0.000005]  [<ffffffffc02baace>] ? sd_probe_async+0xfe/0x1b0 [sd_mod]
[  +0.000003]  [<ffffffff9f29de6a>] ? async_run_entry_fn+0x3a/0x140
[  +0.000004]  [<ffffffff9f29492a>] ? process_one_work+0x18a/0x430
[  +0.000003]  [<ffffffff9f294c1d>] ? worker_thread+0x4d/0x490
[  +0.000003]  [<ffffffff9f294bd0>] ? process_one_work+0x430/0x430
[  +0.000004]  [<ffffffff9f29aec9>] ? kthread+0xd9/0xf0
[  +0.000005]  [<ffffffff9f821171>] ? __switch_to_asm+0x41/0x70
[  +0.000004]  [<ffffffff9f29adf0>] ? kthread_park+0x60/0x60
[  +0.000004]  [<ffffffff9f8211f7>] ? ret_from_fork+0x57/0x70
[  +0.000003] ---[ end trace 35641ca1a7e3e8ef ]---
[  +0.000002] kobject_add_internal failed for 8:80 with -EEXIST, don't try to register things with the same name in the same directory.
[  +0.001085] BUG: unable to handle kernel NULL pointer dereference at 0000000000000040
[  +0.001050] IP: [<ffffffff9f49107f>] sysfs_do_create_link_sd.isra.2+0x2f/0xb0
[  +0.001090] PGD 0

[  +0.001054] Oops: 0000 [#1] SMP
[  +0.001040] Modules linked in: uas cdc_ether usb_storage usbnet intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp hp_wmi iTCO_wdt iTCO_vendor_support snd_hda_codec_hdmi joydev sparse_keymap kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel intel_cstate intel_uncore intel_rapl_perf arc4 rt2800pci uvcvideo rt2800mmio evdev rt2800lib pcspkr videobuf2_vmalloc rt2x00pci videobuf2_memops rt2x00mmio snd_hda_codec_idt videobuf2_v4l2 btusb rt2x00lib btrtl videobuf2_core btbcm eeprom_93cx6 serio_raw snd_hda_codec_generic btintel sg mac80211 bluetooth videodev snd_hda_intel i915 media snd_hda_codec snd_hda_core cfg80211 snd_hwdep lpc_ich mfd_core snd_pcm crc_ccitt jmb38x_ms drm_kms_helper rfkill snd_timer memstick drm snd mei_me soundcore i2c_algo_bit shpchp mei wmi battery video hp_accel
[  +0.005465]  lis3lv02d input_polldev ac button ip_tables x_tables autofs4 ext4 crc16 jbd2 crc32c_generic fscrypto ecb glue_helper lrw gf128mul ablk_helper cryptd aes_x86_64 mbcache sr_mod cdrom sd_mod crc32c_intel ahci libahci psmouse libata scsi_mod xhci_pci xhci_hcd r8169 mii sdhci_pci ehci_pci sdhci ehci_hcd mmc_core usbcore usb_common thermal
[  +0.003810] CPU: 2 PID: 11007 Comm: kworker/u16:2 Tainted: G        W       4.9.0-15-amd64 #1 Debian 4.9.258-1
[  +0.001218] Hardware name: Hewlett-Packard HP ProBook 4330s/167E, BIOS 68SRR Ver. F.23 03/09/2012
[  +0.001231] Workqueue: events_unbound async_run_entry_fn
[  +0.001231] task: ffff9fc835e88100 task.stack: ffffac3c094cc000
[  +0.001292] RIP: 0010:[<ffffffff9f49107f>]  [<ffffffff9f49107f>] sysfs_do_create_link_sd.isra.2+0x2f/0xb0
[  +0.001358] RSP: 0018:ffffac3c094cfd48  EFLAGS: 00010246
[  +0.001374] RAX: 0000000000000000 RBX: 0000000000000040 RCX: 0000000000000001
[  +0.001421] RDX: 0000000000000001 RSI: 0000000000000040 RDI: ffffffffa0115110
[  +0.001430] RBP: ffffffff9fc098fb R08: ffff9fc825dcf720 R09: 0000000000000000
[  +0.001456] R10: 0000000000000027 R11: 0000000000000000 R12: ffff9fc824b86528
[  +0.001495] R13: 0000000000000001 R14: ffff9fc838566870 R15: ffff9fc835d163a8
[  +0.001521] FS:  0000000000000000(0000) GS:ffff9fc83f480000(0000) knlGS:0000000000000000
[  +0.001575] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  +0.001566] CR2: 0000000000000040 CR3: 0000000134cfa000 CR4: 0000000000060670
[  +0.001610] Stack:
[  +0.001630]  ffff9fc838566800 ffff9fc8258c0a10 ffff9fc838566880 ffff9fc83856680c
[  +0.001684]  ffff9fc838566870 ffffffff9f51a41d ffff9fc838566800 0080005024d06990
[  +0.001272]  ffff9fc838566800 0000000000000000 0000000000000001 e0519c48eee2005f
[  +0.001075] Call Trace:
[  +0.001072]  [<ffffffff9f51a41d>] ? device_add_disk+0x1ed/0x470
[  +0.001106]  [<ffffffffc02baace>] ? sd_probe_async+0xfe/0x1b0 [sd_mod]
[  +0.001125]  [<ffffffff9f29de6a>] ? async_run_entry_fn+0x3a/0x140
[  +0.001316]  [<ffffffff9f29492a>] ? process_one_work+0x18a/0x430
[  +0.001223]  [<ffffffff9f294c1d>] ? worker_thread+0x4d/0x490
[  +0.001159]  [<ffffffff9f294bd0>] ? process_one_work+0x430/0x430
[  +0.001173]  [<ffffffff9f29aec9>] ? kthread+0xd9/0xf0
[  +0.001485]  [<ffffffff9f821171>] ? __switch_to_asm+0x41/0x70
[  +0.000374] usb 4-1.1.3.3: New USB device found, idVendor=19d2, idProduct=1405
[  +0.000003] usb 4-1.1.3.3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[  +0.000002] usb 4-1.1.3.3: P

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