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linux/drivers/target/iscsi
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Nicholas Bellinger 035d3e1882 iscsi-target: Fix potential dead-lock during node acl delete 
commit 26a99c19f8 upstream.

This patch is a iscsi-target specific bug-fix for a dead-lock
that can occur during explicit struct se_node_acl->acl_group
se_session deletion via configfs rmdir(2), when iscsi-target
time2retain timer is still active.

It changes iscsi-target to obtain se_portal_group->session_lock
internally using spin_in_locked() to check for the specific
se_node_acl configfs shutdown rmdir(2) case.

Note this patch is intended for stable, and the subsequent
v4.5-rc patch converts target_core_tpg.c to use proper
se_sess->sess_kref reference counting for both se_node_acl
deletion + se_node_acl->queue_depth se_session restart.

Reported-by:: Sagi Grimberg <sagig@mellanox.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Hannes Reinecke <hare@suse.de>
Cc: Andy Grover <agrover@redhat.com>
Cc: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
History 2016-02-02 19:10:05 +00:00
..
iscsi_target.c iscsi-target: Fix rx_login_comp hang after login failure 2015-12-18 16:06:38 +00:00
iscsi_target.h iscsi/iser-target: Convert to command priv_size usage 2013-09-09 14:29:21 -07:00
iscsi_target_auth.c iscsi-target; Enforce 1024 byte maximum for CHAP_C key value 2014-06-26 20:56:42 -07:00
iscsi_target_auth.h iscsi-target: Fix CHAP_A parameter list handling 2014-06-05 19:44:02 -07:00
iscsi_target_configfs.c iscsi-target: Fix potential dead-lock during node acl delete 2016-02-02 19:10:05 +00:00
iscsi_target_configfs.h iscsi-target: Add iSCSI fabric support for target v4.1 2011-07-26 09:16:43 +00:00
iscsi_target_core.h iscsi-target: Fix iscsit_start_kthreads failure OOPs 2015-08-20 19:58:05 +01:00
iscsi_target_datain_values.c target: Update copyright ownership/year information to 2013 2013-09-10 20:23:36 -07:00
iscsi_target_datain_values.h iscsi-target: Add iSCSI fabric support for target v4.1 2011-07-26 09:16:43 +00:00
iscsi_target_device.c iscsi-target: Fix mutex_trylock usage in iscsit_increment_maxcmdsn 2013-11-12 17:54:56 -08:00
iscsi_target_device.h target/iscsi: Remove unneeded wrapper functions 2012-02-25 14:37:47 -08:00
iscsi_target_erl0.c iscsi-target: Convert iscsi_thread_set usage to kthread.h 2015-05-05 11:09:38 +01:00
iscsi_target_erl0.h iscsi-target: Add iSCSI fabric support for target v4.1 2011-07-26 09:16:43 +00:00
iscsi_target_erl1.c iscsi-target: Fix SNACK Type 1 + BegRun=0 handling 2014-02-12 15:11:17 -08:00
iscsi_target_erl1.h iscsit: use the itt_t abstract type 2012-10-03 14:21:50 -07:00
iscsi_target_erl2.c iscsi/iser-target: Use list_del_init for ->i_conn_node 2014-03-04 17:54:09 -08:00
iscsi_target_erl2.h iscsit: proper endianess conversions 2012-10-03 14:39:22 -07:00
iscsi_target_login.c iscsi-target: Fix iscsit_start_kthreads failure OOPs 2015-08-20 19:58:05 +01:00
iscsi_target_login.h iscsi-target: Fix iscsit_start_kthreads failure OOPs 2015-08-20 19:58:05 +01:00
iscsi_target_nego.c iscsi-target: Fix rx_login_comp hang after login failure 2015-12-18 16:06:38 +00:00
iscsi_target_nego.h iscsi-target: Initial traditional TCP conversion to iscsit_transport 2013-04-25 01:05:26 -07:00
iscsi_target_nodeattrib.c iscsi-target: Expose default_erl as TPG attribute 2013-11-20 11:57:18 -08:00
iscsi_target_nodeattrib.h iscsi-target: Expose default_erl as TPG attribute 2013-11-20 11:57:18 -08:00
iscsi_target_parameters.c iscsi-target: avoid NULL pointer in iscsi_copy_param_list failure 2014-10-05 13:41:05 -07:00
iscsi_target_parameters.h iscsi-target: fix heap buffer overflow on error 2013-05-30 18:07:54 -07:00
iscsi_target_seq_pdu_list.c target: Update copyright ownership/year information to 2013 2013-09-10 20:23:36 -07:00
iscsi_target_seq_pdu_list.h target/iscsi: Fold _decide_list_to_build into _build_pdu_and_seq_lists 2012-04-14 17:40:38 -07:00
iscsi_target_stat.c iscsi-target: Convert iscsi_session statistics to atomic_long_t 2013-11-19 21:38:52 -08:00
iscsi_target_stat.h iscsi-target: Add iSCSI fabric support for target v4.1 2011-07-26 09:16:43 +00:00
iscsi_target_tmr.c target: Update copyright ownership/year information to 2013 2013-09-10 20:23:36 -07:00
iscsi_target_tmr.h iscsi-target: Add iSCSI fabric support for target v4.1 2011-07-26 09:16:43 +00:00
iscsi_target_tpg.c Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2014-06-12 22:38:32 -07:00
iscsi_target_tpg.h iscsi-target: Remove no-op from iscsit_tpg_del_portal_group 2014-06-05 19:44:40 -07:00
iscsi_target_tq.c iscsi-target: Drop problematic active_ts_list usage 2015-03-02 13:17:18 +00:00
iscsi_target_tq.h iscsi-target: Add thread_set->ts_activate_sem + use common deallocate 2013-09-10 20:23:05 -07:00
iscsi_target_transport.c iscsi-target: Add iscsit_transport API template 2013-04-25 01:05:26 -07:00
iscsi_target_util.c iscsi-target: Fail connection on short sendmsg writes 2015-01-15 10:44:34 +00:00
iscsi_target_util.h target: Add TFO->abort_task for aborted task resources release 2014-04-07 01:48:51 -07:00
Kconfig target: iscsi_target depends on NET 2011-07-28 20:16:18 +00:00
Makefile iscsi-target: Add iscsit_transport API template 2013-04-25 01:05:26 -07:00