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[Brad Figg <brad.figg@xxxxxxxxxxxxx>]

This bug is missing log files that will aid in diagnosing the problem.
>From a terminal window please run:

apport-collect 1559784

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.

** Changed in: linux (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1559784

Title:
  zFCP on s390x problems on zfcp module unloading

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  Right after unloading zFCP module I got:

  [ 1432.522123] sysfs group 0000000000b5aa30 not found for kobject '1:0:0:1073823786'
  [ 1432.522138] ------------[ cut here ]------------
  [ 1432.522139] WARNING: at /build/linux-RgAt0H/linux-4.3.0/fs/sysfs/group.c:224
  [ 1432.522140] Modules linked in: ghash_s390(E) prng(E) aes_s390(E) des_s390(E) des_generic(E) sha512_s390(E) sha256_s390(E) sha1_s390(E) sha_common(E) vmur(E) qeth_l2(E) qeth(E) ccwgroup(E) dasd_eckd_mod(E) dasd_mod(E) zfcp(E-) qdio(E) scsi_transport_fc(E)
  [ 1432.522149] CPU: 2 PID: 5873 Comm: rmmod Tainted: G            E   4.3.0-2-generic #11-Ubuntu
  [ 1432.522151] task: 0000000076f4a9e0 ti: 00000000ed85c000 task.ti: 00000000ed85c000
  [ 1432.522152] Krnl PSW : 0704d00180000000 000000000036cbee (sysfs_remove_group+0xbe/0xd0)
  [ 1432.522158]            R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:1 PM:0 EA:3
                 Krnl GPRS: 0000000000c76c33 0000000000c58e3c 0000000000000045 00000000fb1ac7a0
  [ 1432.522160]            000000000036cbea 0000000000000000 0000000078d70050 0000000078d70000
  [ 1432.522161]            0000000080000000 00000000f93df000 0000000078d7e010 0000000000000000
  [ 1432.522162]            00000000ed85c000 0000000000b5aa30 000000000036cbea 00000000ed85fa78
  [ 1432.522168] Krnl Code: 000000000036cbde: c020002bc358	larl	%r2,8e528e
                            000000000036cbe4: c0e5fff7144a	brasl	%r14,24f478
                           #000000000036cbea: a7f40001		brc	15,36cbec
                           >000000000036cbee: e340f0c00004	lg	%r4,192(%r15)
                            000000000036cbf4: ebaff0a00004	lmg	%r10,%r15,160(%r15)
                            000000000036cbfa: 07f4		bcr	15,%r4
                            000000000036cbfc: 0707		bcr	0,%r7
                            000000000036cbfe: 0707		bcr	0,%r7
  [ 1432.522177] Call Trace:
  [ 1432.522179] ([<000000000036cbea>] sysfs_remove_group+0xba/0xd0)
  [ 1432.522183]  [<0000000000575a44>] device_del+0x5c/0x268
  [ 1432.522184]  [<0000000000575c90>] device_unregister+0x40/0x98
  [ 1432.522186]  [<00000000004d9b0c>] bsg_unregister_queue+0x74/0xd8
  [ 1432.522189]  [<00000000005aff76>] __scsi_remove_device+0xe6/0x118
  [ 1432.522192]  [<00000000005adaca>] scsi_forget_host+0xca/0xf8
  [ 1432.522193]  [<000000000059fa86>] scsi_remove_host+0xbe/0x1c8
  [ 1432.522200]  [<000003ff800496a6>] zfcp_scsi_adapter_unregister+0x9e/0xc8 [zfcp]
  [ 1432.522202]  [<000003ff8003b55e>] zfcp_adapter_unregister+0x7e/0xc0 [zfcp]
  [ 1432.522205]  [<000003ff8003c876>] zfcp_ccw_remove+0x28e/0x2b0 [zfcp]
  [ 1432.522207]  [<0000000000604814>] ccw_device_remove+0x44/0x210
  [ 1432.522209]  [<000000000057a9fe>] __device_release_driver+0xa6/0x150
  [ 1432.522211]  [<000000000057b782>] driver_detach+0x11a/0x120
  [ 1432.522212]  [<000000000057a342>] bus_remove_driver+0x82/0x118
  [ 1432.522214]  [<000003ff8004bdd2>] zfcp_module_exit+0x2a/0x258 [zfcp]
  [ 1432.522217]  [<00000000001caf6c>] SyS_delete_module+0x1c4/0x210
  [ 1432.522221]  [<000000000076dbfe>] system_call+0xd6/0x264
  [ 1432.522222]  [<000003ffb0f6e416>] 0x3ffb0f6e416
  [ 1432.522223] Last Breaking-Event-Address:
  [ 1432.522224]  [<000000000036cbea>] sysfs_remove_group+0xba/0xd0
  [ 1432.522225] ---[ end trace 2e7b1c668b02f90a ]---
  [ 1432.522430] sysfs group 0000000000b5aa30 not found for kobject '1:0:0:1073823786'
  [ 1432.522434] ------------[ cut here ]------------

  Opening the bug for tracking purposes.

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