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linux-uconsole/drivers/target
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Nicholas Bellinger 50911760bc target: Fix alua_access_state attribute OOPs for un-configured devices 
commit f145377351 upstream.

This patch fixes a OOPs where an attempt to write to the per-device
alua_access_state configfs attribute at:

  /sys/kernel/config/target/core/$HBA/$DEV/alua/$TG_PT_GP/alua_access_state

results in an NULL pointer dereference when the backend device has not
yet been configured.

This patch adds an explicit check for DF_CONFIGURED, and fails with
-ENODEV to avoid this case.

Reported-by: Chris Boot <crb@tiger-computing.co.uk>
Reported-by: Philip Gaw <pgaw@darktech.org.uk>
Cc: Chris Boot <crb@tiger-computing.co.uk>
Cc: Philip Gaw <pgaw@darktech.org.uk>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-16 13:42:53 -07:00
..
iscsi iscsi-target: Fix wrong buffer / buffer overrun in iscsi_change_param_value() 2014-06-16 13:42:53 -07:00
loopback tcm: switch to ->show_info() 2013-04-09 14:13:19 -04:00
sbp Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2013-03-02 11:43:27 -08:00
tcm_fc target/tcm_fc: Fix use-after-free of ft_tpg 2014-05-06 07:55:30 -07:00
Kconfig sbp-target: Initial merge of firewire/ieee-1394 target mode support 2012-05-09 15:25:17 -07:00
Makefile target: move code for CDB emulation 2012-07-16 17:27:45 -07:00
target_core_alua.c target: Allow READ_CAPACITY opcode in ALUA Standby access state 2014-06-16 13:42:53 -07:00
target_core_alua.h target: pass sense_reason as a return value 2012-11-06 20:55:46 -08:00
target_core_configfs.c target: Fix alua_access_state attribute OOPs for un-configured devices 2014-06-16 13:42:53 -07:00
target_core_device.c target: Don't allow setting WC emulation if device doesn't support 2014-06-07 13:25:38 -07:00
target_core_fabric_configfs.c target: Add missing mapped_lun bounds checking during make_mappedlun setup 2013-02-18 18:47:28 -08:00
target_core_fabric_lib.c target: Update copyright information to 2012 2012-11-27 22:47:02 -08:00
target_core_file.c target/file: Update hw_max_sectors based on current block_size 2014-01-09 12:24:20 -08:00
target_core_file.h target/file: Update hw_max_sectors based on current block_size 2014-01-09 12:24:20 -08:00
target_core_hba.c target: Update copyright information to 2012 2012-11-27 22:47:02 -08:00
target_core_iblock.c target/iblock: Fix WCE=1 + DPOFUA=1 backend WRITE regression 2013-05-15 01:46:34 -07:00
target_core_iblock.h target: kill struct se_subsystem_dev 2012-11-06 20:55:43 -08:00
target_core_internal.h target: Remove unused struct members in se_dev_entry 2013-05-03 16:42:18 -07:00
target_core_pr.c target: Fix >= v3.9+ regression in PR APTPL + ALUA metadata write-out 2013-09-26 17:18:27 -07:00
target_core_pr.h target: pass sense_reason as a return value 2012-11-06 20:55:46 -08:00
target_core_pscsi.c target/pscsi: fix return value check 2013-11-13 12:05:32 +09:00
target_core_pscsi.h target: kill struct se_subsystem_dev 2012-11-06 20:55:43 -08:00
target_core_rd.c target/rd: Add ramdisk bit for NULLIO operation 2013-05-11 16:22:39 -07:00
target_core_rd.h target/rd: Add ramdisk bit for NULLIO operation 2013-05-11 16:22:39 -07:00
target_core_sbc.c target: Add sbc_execute_unmap() helper 2013-04-25 01:05:24 -07:00
target_core_spc.c target: Fix trailing ASCII space usage in INQUIRY vendor+model 2013-09-07 22:09:59 -07:00
target_core_stat.c target: Update copyright information to 2012 2012-11-27 22:47:02 -08:00
target_core_tmr.c target: Remove useless if statement 2013-02-13 11:27:22 -08:00
target_core_tpg.c target: fix possible memory leak in core_tpg_register() 2013-03-18 12:45:52 -07:00
target_core_transport.c target: Propigate up ->cmd_kref put return via transport_generic_free_cmd 2013-05-31 01:21:23 -07:00
target_core_ua.c target: Update copyright information to 2012 2012-11-27 22:47:02 -08:00
target_core_ua.h target: pass sense_reason as a return value 2012-11-06 20:55:46 -08:00