Nicholas Bellinger 4a3c526ced target: Obtain se_node_acl->acl_kref during get_initiator_node_acl ... commit 21aaa23b0e upstream. This patch addresses a long standing race where obtaining se_node_acl->acl_kref in __transport_register_session() happens a bit too late, and leaves open the potential for core_tpg_del_initiator_node_acl() to hit a NULL pointer dereference. Instead, take ->acl_kref in core_tpg_get_initiator_node_acl() while se_portal_group->acl_node_mutex is held, and move the final target_put_nacl() from transport_deregister_session() into transport_free_session() so that fabric driver login failure handling using the modern method to still work as expected. Also, update core_tpg_get_initiator_node_acl() to take an extra reference for dynamically generated acls for demo-mode, before returning to fabric caller. Also update iscsi-target sendtargets special case handling to use target_tpg_has_node_acl() when checking if demo_mode_discovery == true during discovery lookup. Note the existing wait_for_completion(&acl->acl_free_comp) in core_tpg_del_initiator_node_acl() does not change. Cc: 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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2017-03-12 06:37:27 +01:00
..
acpi	Merge branch 'acpi-pci'	2015-11-07 01:30:10 +01:00
asm-generic	asm-generic: make copy_from_user() zero the destination properly	2016-09-24 10:07:45 +02:00
clocksource
crypto	crypto: ghash-generic - move common definitions to a new header file	2016-10-22 12:26:56 +02:00
drm	drm/prime: Pass the right module owner through to dma_buf_export()	2016-10-31 04:13:57 -06:00
dt-bindings	ARM: DT updates for v4.4	2015-11-10 15:06:26 -08:00
keys
kvm	KVM: arm/arm64: arch_timer: Preserve physical dist. active state on LR.active	2015-11-24 18:07:40 +01:00
linux	iommu/vt-d: Fix some macros that are incorrectly specified in intel-iommu	2017-03-12 06:37:25 +01:00
math-emu
media	videobuf2-core: Check user space planes array in dqbuf	2016-05-04 14:48:50 -07:00
memory
misc
net	netlabel: out of bound access in cipso_v4_validate()	2017-02-18 16:39:26 +01:00
pcmcia
ras
rdma	IB/cma: Fix a race condition in iboe_addr_get_sgid()	2017-01-09 08:07:51 +01:00
rxrpc
scsi	scsi: use 'scsi_device_from_queue()' for scsi_dh	2017-03-12 06:37:26 +01:00
soc	ARM: at91: define LPDDR types	2017-03-12 06:37:24 +01:00
sound	ALSA: rawmidi: Make snd_rawmidi_transmit() race-free	2016-02-17 12:30:58 -08:00
target	target: Obtain se_node_acl->acl_kref during get_initiator_node_acl	2017-03-12 06:37:27 +01:00
trace	SUNRPC: Don't allocate a full sockaddr_storage for tracing	2016-08-20 18:09:26 +02:00
uapi	can: raw: raw_setsockopt: limit number of can_filter that can be set	2016-12-15 08:49:22 -08:00
video	drm/imx: Match imx-ipuv3-crtc components using device node in platform data	2016-06-07 18:14:37 -07:00
xen	xen: Fix page <-> pfn conversion on 32 bit systems	2016-05-11 11:21:14 +02:00
Kbuild