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* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (55 commits)
[SCSI] tcm_loop: Add multi-fabric Linux/SCSI LLD fabric module
[SCSI] qla4xxx: Use polling mode for disable interrupt mailbox completion
[SCSI] Revert "[SCSI] Retrieve the Caching mode page"
[SCSI] bnx2fc: IO completion not processed due to missed wakeup
[SCSI] qla4xxx: Update driver version to 5.02.00-k6
[SCSI] qla4xxx: masking required bits of add_fw_options during initialization
[SCSI] qla4xxx: added new function qla4xxx_relogin_all_devices
[SCSI] qla4xxx: add support for ql4xsess_recovery_tmo cmd line param
[SCSI] qla4xxx: Add support for ql4xmaxqdepth command line parameter
[SCSI] qla4xxx: cleanup function qla4xxx_process_ddb_changed
[SCSI] qla4xxx: Prevent other port reinitialization during remove_adapter
[SCSI] qla4xxx: remove unused ddb flag DF_NO_RELOGIN
[SCSI] qla4xxx: cleanup DDB relogin logic during initialization
[SCSI] qla4xxx: Do not retry ISP82XX initialization if H/W state is failed
[SCSI] qla4xxx: Do not send mbox command if FW is in failed state
[SCSI] qla4xxx: cleanup qla4xxx_initialize_ddb_list()
[SCSI] ses: add subenclosure support
[SCSI] bnx2fc: Bump version to 1.0.1
[SCSI] bnx2fc: Remove unnecessary module state checks
[SCSI] bnx2fc: Fix MTU issue by using static MTU
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* 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block: (65 commits)
Documentation/iostats.txt: bit-size reference etc.
cfq-iosched: removing unnecessary think time checking
cfq-iosched: Don't clear queue stats when preempt.
blk-throttle: Reset group slice when limits are changed
blk-cgroup: Only give unaccounted_time under debug
cfq-iosched: Don't set active queue in preempt
block: fix non-atomic access to genhd inflight structures
block: attempt to merge with existing requests on plug flush
block: NULL dereference on error path in __blkdev_get()
cfq-iosched: Don't update group weights when on service tree
fs: assign sb->s_bdi to default_backing_dev_info if the bdi is going away
block: Require subsystems to explicitly allocate bio_set integrity mempool
jbd2: finish conversion from WRITE_SYNC_PLUG to WRITE_SYNC and explicit plugging
jbd: finish conversion from WRITE_SYNC_PLUG to WRITE_SYNC and explicit plugging
fs: make fsync_buffers_list() plug
mm: make generic_writepages() use plugging
blk-cgroup: Add unaccounted time to timeslice_used.
block: fixup plugging stubs for !CONFIG_BLOCK
block: remove obsolete comments for blkdev_issue_zeroout.
blktrace: Use rq->cmd_flags directly in blk_add_trace_rq.
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Fix up conflicts in fs/{aio.c,super.c}
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This patch converts the target_core_store_dev_enable() -> struct
se_subsystem_api->create_virtdevice() call to return proper ERR_PTR values
back up to configfs logic during backend dependent struct se_device ENABLE
exception conditions.
Along with the change to target_core_configfs.c, this includes converting IBLOCK,
FILEIO, pSCSI, and RAMDISK_* backend subsystem plugins to obtain upper level
PTR_ERR return codes (where available), and return via ERR_PTR during a
*_create_virtdev() failure.
Reported-by: Fubo Chen <fubo.chen@gmail.com>
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
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match_strdup() dynamically allocates memory and it is the responsabillity
of the caller to free that memory. The following three cases:
drivers/target/target_core_file.c:fd_set_configfs_dev_params()
drivers/target/target_core_iblock.c:iblock_set_configfs_dev_params()
drivers/target/target_core_configfs.c:target_core_dev_pr_store_attr_res_aptpl_metadata()
should be kfree()'ing the allocated memory once it is no longer needed.
It also makes sure to return -ENOMEM if the memory allocation in match_strdup()
should fail. For target_core_configfs.c, this patch adds kfree()'s around
Opt_initiator_fabric, Opt_initiator_node, Opt_initiator_sid, Opt_sa_res_key,
Opt_target_fabric, and Opt_target_node for the Persistent Reservations
Activate Persistence across Target Power Loss (APTPL=1) token parsing.
Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
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Code has been converted over to the new explicit on-stack plugging,
and delay users have been converted to use the new API for that.
So lets kill off the old plugging along with aops->sync_page().
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
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These were missed the last time I cleaned this up
globally, because of code moving around or new code
getting merged.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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This patch adds an explict check for struct iblock_dev->ibd_bd in
iblock_free_device() before calling blkdev_put(), which will otherwise hit
the following NULL pointer dereference @ ib_dev->ibd_bd when iblock_create_virtdevice()
fails to claim an already in-use struct block_device via blkdev_get_by_path().
[ 112.528578] Target_Core_ConfigFS: Allocated struct se_subsystem_dev: ffff88001e750000 se_dev_su_ptr: ffff88001dd05d70
[ 112.534681] Target_Core_ConfigFS: Calling t->free_device() for se_dev_su_ptr: ffff88001dd05d70
[ 112.535029] BUG: unable to handle kernel NULL pointer dereference at 0000000000000020
[ 112.535029] IP: [<ffffffff814987a3>] mutex_lock+0x14/0x35
[ 112.535029] PGD 1e5d0067 PUD 1e274067 PMD 0
[ 112.535029] Oops: 0002 [#1] SMP
[ 112.535029] last sysfs file: /sys/devices/pci0000:00/0000:00:07.1/host2/target2:0:0/2:0:0:0/type
[ 112.535029] CPU 0
[ 112.535029] Modules linked in: iscsi_target_mod target_core_stgt scsi_tgt target_core_pscsi target_core_file target_core_iblock target_core_mod configfs sr_mod cdrom sd_mod ata_piix mptspi mptscsih libata mptbase [last unloaded: scsi_wait_scan]
[ 112.535029]
[ 112.535029] Pid: 3345, comm: python2.5 Not tainted 2.6.37+ #1 440BX Desktop Reference Platform/VMware Virtual Platform
[ 112.535029] RIP: 0010:[<ffffffff814987a3>] [<ffffffff814987a3>] mutex_lock+0x14/0x35
[ 112.535029] RSP: 0018:ffff88001e6d7d58 EFLAGS: 00010246
[ 112.535029] RAX: 0000000000000000 RBX: 0000000000000020 RCX: 0000000000000082
[ 112.535029] RDX: ffff88001e6d7fd8 RSI: 0000000000000083 RDI: 0000000000000020
[ 112.535029] RBP: ffff88001e6d7d68 R08: 0000000000000000 R09: 0000000000000000
[ 112.535029] R10: ffff8800000be860 R11: ffff88001f420000 R12: 0000000000000020
[ 112.535029] R13: 0000000000000083 R14: ffff88001d809430 R15: ffff88001d8094f8
[ 112.535029] FS: 00007ff17ca7d6e0(0000) GS:ffff88001fa00000(0000) knlGS:0000000000000000
[ 112.535029] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 112.535029] CR2: 0000000000000020 CR3: 000000001e5d2000 CR4: 00000000000006f0
[ 112.535029] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 112.535029] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[ 112.535029] Process python2.5 (pid: 3345, threadinfo ffff88001e6d6000, task ffff88001e2d0760)
[ 112.535029] Stack:
[ 112.535029] ffff88001e6d7d88 0000000000000000 ffff88001e6d7d98 ffffffff811187fc
[ 112.535029] ffff88001d809430 ffff88001dd05d70 ffff88001e750860 ffff88001e750000
[ 112.535029] ffff88001e6d7db8 ffffffffa00e3757 ffff88001e6d7db8 0000000000000004
[ 112.535029] Call Trace:
[ 112.535029] [<ffffffff811187fc>] blkdev_put+0x28/0x107
[ 112.535029] [<ffffffffa00e3757>] iblock_free_device+0x1d/0x36 [target_core_iblock]
[ 112.535029] [<ffffffffa00a319c>] target_core_drop_subdev+0x15f/0x18d [target_core_mod]
[ 112.535029] [<ffffffffa00960db>] client_drop_item+0x25/0x31 [configfs]
[ 112.535029] [<ffffffffa00967b5>] configfs_rmdir+0x1a1/0x223 [configfs]
[ 112.535029] [<ffffffff810fa8cd>] vfs_rmdir+0x7e/0xd3
[ 112.535029] [<ffffffff810fc3be>] do_rmdir+0xa3/0xf4
[ 112.535029] [<ffffffff810fc446>] sys_rmdir+0x11/0x13
[ 112.535029] [<ffffffff81002a92>] system_call_fastpath+0x16/0x1b
[ 112.535029] Code: 8b 04 25 88 b5 00 00 48 2d d8 1f 00 00 48 89 43 18 31 c0 5e 5b c9 c3 55 48 89 e5 53 48 89 fb 48 83 ec 08 e8 c4 f7 ff ff 48 89 df <3e> ff 0f 79 05 e8 1e ff ff ff 65 48 8b 04 25 88 b5 00 00 48 2d
[ 112.535029] RIP [<ffffffff814987a3>] mutex_lock+0x14/0x35
[ 112.535029] RSP <ffff88001e6d7d58>
[ 112.535029] CR2: 0000000000000020
[ 132.679636] ---[ end trace 05754bb48eb828f0 ]---
Note it also adds an second explict check for ib_dev->ibd_bio_set before calling
bioset_free() to fix the same possible NULL pointer deference during an early
iblock_create_virtdevice() failure.
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
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blkdev_get_by_path() returns an ERR_PTR() or error and it doesn't return
a NULL. It looks like this bug would be easy to trigger by mistake.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
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LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
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Linus Torvalds
Nicholas Bellinger
Jesper Juhl
Jens Axboe
Arnd Bergmann
Dan Carpenter