OOPS: unplugging western digital passport drive

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Hi linux-scsi,
I've got another case of reproducible crash when unplugging western
digital passport drives. This was mentioned before in
http://www.spinics.net/lists/linux-scsi/msg82603.html

Is there any way I can get a more correct stacktrace of the original
bug without changing/recompiling the kernel? (or with?)

My last log from oops is:

[ 3343.469871]: usb 4-1: USB disconnect, device number 3
[ 3343.521948]: BUG: unable to handle kernel NULL pointer dereference
at 00000000000001a0
[ 3343.522052]: IP: [<ffffffff81285405>] blk_post_runtime_resume+0x65/0x80
[ 3343.522131]: PGD 0
[ 3343.522159]: Oops: 0002 [#1] PREEMPT SMP
[ 3343.522215]: Modules linked in: nls_utf8 hfsplus ses enclosure uas
usb_storage rfcomm fuse ctr ccm bnep ecb btusb bluetooth uvcvideo
videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev
joydev media mousedev iTCO_wdt iTCO_vendor_support arc4 coretemp
intel_rapl x86_pkg_temp_thermal intel_powerclamp iwldvm kvm_intel
mac80211 kvm evdev mac_hid psmouse serio_raw pcspkr snd_hda_codec_hdmi
iwlwifi snd_hda_codec_realtek i2c_i801 snd_hda_codec_generic
rtsx_pci_ms i915 snd_hda_intel memstick snd_hda_controller cfg80211
snd_hda_codec r8169 snd_hwdep mii snd_pcm drm_kms_helper snd_timer
lpc_ich shpchp drm thinkpad_acpi intel_gtt i2c_algo_bit nvram mei_me
i2c_core snd mei soundcore led_class rfkill hwmon tpm_tis tpm battery
wmi thermal video button processor ac sch_fq_codel usbhid
hid_logitech_dj
[ 3343.523406]:  hid_generic hid nfs lockd grace sunrpc fscache ext4
crc16 mbcache jbd2 sha256_ssse3 sha256_generic algif_skcipher af_alg
dm_crypt dm_mod sr_mod cdrom sd_mod rtsx_pci_sdmmc atkbd mmc_core
libps2 crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel
ahci libahci aesni_intel aes_x86_64 lrw gf128mul glue_helper
ablk_helper cryptd libata xhci_pci ehci_pci scsi_mod xhci_hcd ehci_hcd
rtsx_pci usbcore usb_common i8042 serio
[ 3343.523825]: CPU: 1 PID: 22490 Comm: kworker/1:0 Not tainted 3.18.6-1-ARCH #1
[ 3343.523882]: Hardware name: LENOVO 2481CTO/2481CTO, BIOS
G3ET36WW(1.10) 06/20/2012
[ 3343.523953]: Workqueue: usb_hub_wq hub_event [usbcore]
[ 3343.523997]: task: ffff880211fd5080 ti: ffff8801971bc000 task.ti:
ffff8801971bc000
[ 3343.524054]: RIP: 0010:[<ffffffff81285405>]  [<ffffffff81285405>]
blk_post_runtime_resume+0x65/0x80
[ 3343.524131]: RSP: 0018:ffff8801971bf8c8  EFLAGS: 00010092
[ 3343.524173]: RAX: 0000000000000000 RBX: ffff880211ca1698 RCX:
0000000000000000
[ 3343.524228]: RDX: 00000001000dea0f RSI: 0000000000000009 RDI:
ffff880211ca1698
[ 3343.524283]: RBP: ffff8801971bf8d8 R08: 0000000000000000 R09:
ffff880216c3f000
[ 3343.524338]: R10: ffff88021f256db0 R11: ffffea0002987d40 R12:
0000000000000000
[ 3343.524392]: R13: 0000000000000000 R14: ffff88020df7b428 R15:
0000000000000004
[ 3343.524448]: FS:  0000000000000000(0000) GS:ffff88021f240000(0000)
knlGS:0000000000000000
[ 3343.524509]: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3343.524554]: CR2: 00000000000001a0 CR3: 0000000001811000 CR4:
00000000001407e0
[ 3343.524609]: Stack:
[ 3343.524628]:  ffff8802123fe968 0000000000000000 ffff8801971bf908
ffffffffa0119564
[ 3343.524695]:  ffff8801971bf910 ffff8802123fe968 ffff8802123fea16
ffffffffa01194e0
[ 3343.524762]:  ffff8801971bf938 ffffffff813c4636 ffff8800a61f5780
ffff8802123fe968
[ 3343.524828]: Call Trace:
[ 3343.524866]:  [<ffffffffa0119564>] scsi_runtime_resume+0x84/0xd0 [scsi_mod]
[ 3343.524930]:  [<ffffffffa01194e0>] ?
scsi_autopm_put_device+0x20/0x20 [scsi_mod]
[ 3343.524990]:  [<ffffffff813c4636>] __rpm_callback+0x36/0x90
[ 3343.525035]:  [<ffffffff813c46b6>] rpm_callback+0x26/0xa0
[ 3343.525079]:  [<ffffffff813c5ad1>] rpm_resume+0x4b1/0x690
[ 3343.525124]:  [<ffffffff813c5cf0>] __pm_runtime_resume+0x40/0x60
[ 3343.525177]:  [<ffffffff813bb569>] __device_release_driver+0x29/0xf0
[ 3343.525228]:  [<ffffffff813bb653>] device_release_driver+0x23/0x30
[ 3343.525277]:  [<ffffffff813baf08>] bus_remove_device+0x108/0x180
[ 3343.525325]:  [<ffffffff813b7249>] device_del+0x129/0x1f0
[ 3343.525378]:  [<ffffffffa01170ed>] __scsi_remove_device+0xcd/0xe0 [scsi_mod]
[ 3343.525442]:  [<ffffffffa0115484>] scsi_forget_host+0x64/0x70 [scsi_mod]
[ 3343.525502]:  [<ffffffffa010970b>] scsi_remove_host+0x7b/0x130 [scsi_mod]
[ 3343.525558]:  [<ffffffffa0902419>] usb_stor_disconnect+0x59/0xd0
[usb_storage]
[ 3343.525625]:  [<ffffffffa007f878>] usb_unbind_interface+0x1f8/0x2c0 [usbcore]
[ 3343.525682]:  [<ffffffff813c5293>] ? rpm_idle+0x23/0x340
[ 3343.525729]:  [<ffffffff813bb5bf>] __device_release_driver+0x7f/0xf0
[ 3343.525779]:  [<ffffffff813bb653>] device_release_driver+0x23/0x30
[ 3343.525828]:  [<ffffffff813baf08>] bus_remove_device+0x108/0x180
[ 3343.525876]:  [<ffffffff813b7249>] device_del+0x129/0x1f0
[ 3343.528574]:  [<ffffffffa007cd81>] usb_disable_device+0x91/0x290 [usbcore]
[ 3343.531302]:  [<ffffffffa00721b4>] usb_disconnect+0x94/0x2d0 [usbcore]
[ 3343.533981]:  [<ffffffffa00743fa>] hub_event+0x66a/0x1640 [usbcore]
[ 3343.536657]:  [<ffffffff81550f08>] ? __schedule+0x3e8/0xa50
[ 3343.539275]:  [<ffffffff8108b845>] process_one_work+0x145/0x400
[ 3343.541919]:  [<ffffffff8108be0b>] worker_thread+0x6b/0x480
[ 3343.544524]:  [<ffffffff8108bda0>] ? init_pwq.part.22+0x10/0x10
[ 3343.547108]:  [<ffffffff81090e6a>] kthread+0xea/0x100
[ 3343.549708]:  [<ffffffff81090d80>] ? kthread_create_on_node+0x1c0/0x1c0
[ 3343.552384]:  [<ffffffff8155563c>] ret_from_fork+0x7c/0xb0
[ 3343.555353]:  [<ffffffff81090d80>] ? kthread_create_on_node+0x1c0/0x1c0
[ 3343.558225]: Code: 41 5c 5d c3 66 90 48 89 df c7 83 e8 04 00 00 00
00 00 00 e8 de eb ff ff 48 8b 83 e0 04 00 00 48 8b 15 00 ec 65 00 be
09 00 00 00 <48> 89 90 a0 01 00 00 48 8b bb e0 04 00 00 e8 28 0f 14 00
eb b3
[ 3343.563429]: RIP  [<ffffffff81285405>] blk_post_runtime_resume+0x65/0x80
[ 3343.565800]:  RSP <ffff8801971bf8c8>
[ 3343.568107]: CR2: 00000000000001a0
[ 3343.583852]: ---[ end trace 1d6502d52258b48f ]---
[ 3343.583858]: note: kworker/1:0[22490] exited with preempt_count 1
[ 3343.583976]: BUG: unable to handle kernel paging request at ffffffffffffffd8
[ 3343.586210]: IP: [<ffffffff81091530>] kthread_data+0x10/0x20

-- 
KTHXBYE,

Stanisław Pitucha
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