Bart Van Assche a67be01951 scst: Fix race between closing a session and adding a LUN ...

Fixes this call stack (kernel 3.2.15):
WARNING: at lib/kref.c:34 kref_get+0x2d/0x30()
Hardware name: X8ST3
Modules linked in: scst_vdisk ib_srpt scst
Pid: 2159, comm: scst_uid Tainted: G W 3.2.15-07+ #2
Call Trace:
[<ffffffff81059cba>] warn_slowpath_common+0x7a/0xb0
[<ffffffff81059d05>] warn_slowpath_null+0x15/0x20
[<ffffffff812a5d7d>] kref_get+0x2d/0x30
[<ffffffff812a46ba>] kobject_get+0x1a/0x30
[<ffffffff812a471b>] kobject_add_internal+0x4b/0x240
[<ffffffff812a4bf3>] kobject_init_and_add+0x63/0x90
[<ffffffffa001082b>] ? scst_tgt_dev_setup_threads+0xab/0x310 [scst]
[<ffffffffa001a722>] scst_tgt_dev_sysfs_create+0x42/0x80 [scst]
[<ffffffffa0010e8c>] scst_alloc_add_tgt_dev+0x31c/0x4b0 [scst]
[<ffffffffa001362e>] scst_acg_add_lun+0xfe/0x230 [scst]
[<ffffffff812b4511>] ? _kstrtoull+0x31/0x90
[<ffffffffa001777c>] scst_luns_mgmt_store_work_fn+0x29c/0x6b0 [scst]
[<ffffffffa0019634>] sysfs_work_thread_fn+0xd4/0x2e0 [scst]
[<ffffffff8107a020>] ? wake_up_bit+0x40/0x40
[<ffffffffa0019560>] ? scst_tgt_cpu_mask_show+0x20/0x20 [scst]
[<ffffffff81079ab6>] kthread+0x96/0xa0
[<ffffffff8163d7b4>] kernel_thread_helper+0x4/0x10
[<ffffffff81079a20>] ? kthread_worker_fn+0x190/0x190
[<ffffffff8163d7b0>] ? gs_change+0x13/0x13

Reported-by: Sebastian Riemer <sebastian.riemer@profitbricks.com>

(Merge r4452:4456 and r4464 from trunk).


git-svn-id: http://svn.code.sf.net/p/scst/svn/branches/2.2.x@4506 d57e44dd-8a1f-0410-8b47-8ef2f437770f

2012-09-07 10:03:02 +00:00

..

kernel-patches

Patch from Cheng Renquan <crquan@gmail.com>

2010-11-16 18:41:28 +00:00

qla2x00-target

qla2x00t: Make out-of-tree build possible (backport r3910 from trunk)

2012-07-29 16:26:28 +00:00

extract-qla2xxx-orig

Reworked qla2x00t patch generation process:

2009-10-11 15:54:04 +00:00

generate-in-tree-patches

Only extract the kernel tree when it's needed, i.e. for the 2.6.26.* kernels.

2009-10-21 20:03:39 +00:00

Kconfig

Implement qlini_mode qla2xxx module parameter with ini_mode_force_reverse sysfs attribute instead of CONFIG_SCSI_QLA2XXX_TARGET_DISABLE_INI_MODE compile-time option for better flexibility.

2010-06-24 18:03:27 +00:00

Makefile

qla2x00t: Make out-of-tree build possible (backport r3910 from trunk)

2012-07-29 16:26:28 +00:00

qla2x_tgt_def.h

qla2x00t: get rid of checkpatch complaints about spaces at the start of a line (merged r3496 from trunk).

2011-12-19 16:09:41 +00:00

qla2x_tgt.h

qla2x00t: Fix a deadlock crash

2012-07-29 14:23:58 +00:00

qla_attr.c

qla2x00t: Port to RHEL 6.1/6.2/6.3 (merge r4303 and r4419 from trunk)

2012-07-29 16:46:58 +00:00

qla_dbg.c

Support for 24xx+ QLA chips added to qla2x00t. So far only for 2.6.26+ kernels.

2009-09-17 17:44:07 +00:00

qla_dbg.h

Update of the initiator driver to one from kernel 2.6.26. Sorry, the prior kernels not supported anymore, but backport patches are welcome.

2008-07-23 17:41:22 +00:00

qla_def.h

scst: Fix race between closing a session and adding a LUN

2012-09-07 10:03:02 +00:00

qla_devtbl.h

Update of the initiator driver to one from kernel 2.6.26. Sorry, the prior kernels not supported anymore, but backport patches are welcome.

2008-07-23 17:41:22 +00:00

qla_dfs.c

Update of the initiator driver to one from kernel 2.6.26. Sorry, the prior kernels not supported anymore, but backport patches are welcome.

2008-07-23 17:41:22 +00:00

qla_fw.h

EXPERIMENTAL! patch to improve keeping S_ID/LOOP_ID/PortName mapping handling. Only slightly tested.

2010-11-24 20:37:01 +00:00

qla_gbl.h

EXPERIMENTAL! patch to improve keeping S_ID/LOOP_ID/PortName mapping handling. Only slightly tested.

2010-11-24 20:37:01 +00:00

qla_gs.c

- Node name setting added

2010-11-05 18:56:54 +00:00

qla_init.c

qla2x00t: Fix a deadlock crash

2012-07-29 14:23:58 +00:00

qla_inline.h

Support for 24xx+ QLA chips added to qla2x00t. So far only for 2.6.26+ kernels.

2009-09-17 17:44:07 +00:00

qla_iocb.c

qla2x00t: Fix a deadlock crash

2012-07-29 14:23:58 +00:00

qla_isr.c

qla2x00t: IRQ handlers can be called without IRQs disabled and IRQF_DISABLED

2012-07-29 14:28:39 +00:00

qla_mbx.c

qla2x00t: Fix a deadlock crash

2012-07-29 14:23:58 +00:00

qla_mid.c

qla2x00t: Fix a deadlock crash

2012-07-29 14:23:58 +00:00

qla_os.c

qla2x00t: Port to RHEL 6.1/6.2/6.3 (merge r4303 and r4419 from trunk)

2012-07-29 16:46:58 +00:00

qla_settings.h

Update of the initiator driver to one from kernel 2.6.26. Sorry, the prior kernels not supported anymore, but backport patches are welcome.

2008-07-23 17:41:22 +00:00

qla_sup.c

qla2x00t: Fix a deadlock crash

2012-07-29 14:23:58 +00:00

qla_version.h

Minor discovery and version info improvements

2010-12-24 18:58:06 +00:00