user/sven/linux.git/drivers/target, branch v3.0

tcm_fc: Fix conversion spec warning

2011-06-24T00:09:16Z

This patch fixes the following conversion specification warning for size_t drivers/target/tcm_fc/tfc_io.c: In function ‘ft_queue_data_in’: drivers/target/tcm_fc/tfc_io.c:209: warning: format ‘%x’ expects type ‘unsigned int’, but argument 5 has type ‘size_t’ Reported-by: Randy Dunlap Reported-by: Stephen Rothwell Signed-off-by: Nicholas Bellinger

tcm_fc: Fix possible lock to unlock type deadlock

2011-06-24T00:09:15Z

There is a typo here, it should be an unlock instead of a lock. The original code will deadlock. Signed-off-by: Dan Carpenter Signed-off-by: Nicholas Bellinger

tcm_fc: Fix ft_send_tm LUN lookup OOPs

2011-06-24T00:09:15Z

This patch fixes a bug in ft_send_tm() that was incorrectly calling ft_get_lun_for_cmd() -> transport_get_lun_for_cmd(), instead of using transport_get_lun_for_tmr() for the proper struct se_lun lookup that was triggering an OOPs in the se_cmd->tmr_req failure path. This patch fixes the issue by re-arranging the codepath where transport_get_lun_for_tmr() is called after tmr request is allocated and made it available as part of se_cmd. It also drops the now unnecessary ft_get_lun_for_cmd() unpacking code, and uses scsilun_to_int() directly ahead of transport_get_lun_for_cmd() and transport_get_lun_for_tmr() usage. Signed-off-by: Patil, Kiran Signed-off-by: Robert Love Signed-off-by: Nicholas A. Bellinger

target: Fix incorrect strlen() NULL terminator checks

2011-06-24T00:08:11Z

This patch fixes a number of cases in target core using an incorrectly if (strlen(foo) > SOME_MAX_SIZE) As strlen() returns the number of characters in the string not counting the NULL character at the end. So if you do something like: char buf[10]; if (strlen("0123456789") > 10) return -ETOOLONG; snprintf(buf, 10, "0123456789"); printf("%s\n", buf); then the last "9" gets chopped off and only "012345678" is printed. Plus I threw in one small related cleanup. Signed-off-by: Dan Carpenter Signed-off-by: Nicholas Bellinger

target: Drop bogus ERR_PTR usage in target_fabric_configfs_init

2011-06-24T00:03:51Z

In the original code, there were several places inside the target_fabric_configfs_init() function that returned NULL on error and one place the returned an ERR_PTR. There are two places that call this function and they only check for NULL returns; they don't check for ERR_PTRs. So I've changed the ERR_PTR so now the function only returns NULL on error. Signed-off-by: Dan Carpenter Signed-off-by: Nicholas Bellinger

target: Fix ERR_PTR dereferencing bugs

2011-06-24T00:03:27Z

transport_init_session() and core_tmr_alloc_req() never return NULL, they only return ERR_PTRs on error. v2: Fix patch to return PTR_ERR(tl_nexus->se_sess) from Ankit Jain's feedback. Signed-off-by: Dan Carpenter Signed-off-by: Ankit Jain Signed-off-by: Nicholas Bellinger

target: Convert transport_deregister_session_configfs nacl_sess_lock to save irq state

2011-06-23T23:59:45Z

This patch converts transport_deregister_session_configfs() to save/restore spinlock IRQ state for struct se_node_acl->nacl_sess_lock access as tcm_qla2xxx logic expects to call transport_deregister_session_configfs() code with irq save already held for struct qla_hw_data. Reported-by: Roland Dreier Signed-off-by: Nicholas Bellinger

target: Fix transport_get_lun_for_tmr failure cases

2011-06-23T23:59:45Z

This patch fixes two possible NULL pointer dereferences in target v4.0 code where se_tmr release path in core_tmr_release_req() can OOPs upon transport_get_lun_for_tmr() failure by attempting to access se_device or se_tmr->tmr_list without a valid member of se_device->tmr_list during transport_free_se_cmd() release. This patch moves the se_tmr->tmr_dev pointer assignment in transport_get_lun_for_tmr() until after possible -ENODEV failures during unpacked_lun lookup. This addresses an OOPs originally reported with LIO v4.1 upstream on .39 code here: TARGET_CORE[qla2xxx]: Detected NON_EXISTENT_LUN Access for 0x00000000 BUG: unable to handle kernel NULL pointer dereference at 0000000000000550 IP: [] __ticket_spin_trylock+0x4/0x20 PGD 0 Oops: 0000 [#1] SMP last sysfs file: /sys/devices/system/cpu/cpu23/cache/index2/shared_cpu_map CPU 1 Modules linked in: netconsole target_core_pscsi target_core_file tcm_qla2xxx target_core_iblock tcm_loop target_core_mod configfs ipmi_devintf ipmi_si ipmi_msghandler serio_raw i7core_edac ioatdma dca edac_core ps_bdrv ses enclosure usbhid usb_storage ahci qla2xxx hid uas e1000e mpt2sas libahci mlx4_core scsi_transport_fc scsi_transport_sas raid_class scsi_tgt [last unloaded: netconsole] Pid: 0, comm: kworker/0:0 Tainted: G W 2.6.39+ #1 Xyratex Storage Server RIP: 0010:[] []__ticket_spin_trylock+0x4/0x20 RSP: 0018:ffff88063e803c08 EFLAGS: 00010286 RAX: ffff880619ab45e0 RBX: 0000000000000550 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000550 RBP: ffff88063e803c08 R08: 0000000000000002 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000568 R13: 0000000000000001 R14: 0000000000000000 R15: ffff88060cd96a20 FS: 0000000000000000(0000) GS:ffff88063e800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 0000000000000550 CR3: 0000000001a03000 CR4: 00000000000006e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process kworker/0:0 (pid: 0, threadinfo ffff880619ab8000, task ffff880619ab45e0) Stack: ffff88063e803c28 ffffffff812cf039 0000000000000550 0000000000000568 ffff88063e803c58 ffffffff8157071e ffffffffa028a1dc ffff88060f7e4600 0000000000000550 ffff880616961480 ffff88063e803c78 ffffffffa028a1dc Call Trace: [] do_raw_spin_trylock+0x19/0x50 [] _raw_spin_lock+0x3e/0x70 [] ? core_tmr_release_req+0x2c/0x60 [target_core_mod] [] core_tmr_release_req+0x2c/0x60 [target_core_mod] [] transport_free_se_cmd+0x22/0x50 [target_core_mod] [] transport_release_cmd_to_pool+0x20/0x40 [target_core_mod] [] transport_generic_free_cmd+0xa5/0xb0 [target_core_mod] [] tcm_qla2xxx_handle_tmr+0xc4/0xd0 [tcm_qla2xxx] [] __qla24xx_handle_abts+0xd3/0x150 [qla2xxx] [] qla_tgt_response_pkt+0x171/0x520 [qla2xxx] [] qla_tgt_response_pkt_all_vps+0x2d/0x220 [qla2xxx] [] qla24xx_process_response_queue+0x1a3/0x670 [qla2xxx] [] ? qla24xx_atio_pkt+0x81/0x120 [qla2xxx] [] ? qla24xx_msix_default+0x45/0x2a0 [qla2xxx] [] qla24xx_msix_default+0x1b8/0x2a0 [qla2xxx] [] handle_irq_event_percpu+0x54/0x210 [] handle_irq_event+0x48/0x70 [] ? handle_edge_irq+0x1e/0x110 [] handle_edge_irq+0x77/0x110 [] handle_irq+0x22/0x40 [] do_IRQ+0x5d/0xe0 [] common_interrupt+0x13/0x13 [] ? intel_idle+0xd7/0x130 [] ? intel_idle+0xd0/0x130 [] cpuidle_idle_call+0xab/0x1c0 [] cpu_idle+0xab/0xf0 [] start_secondary+0x1cb/0x1d2 Reported-by: Roland Dreier Signed-off-by: Nicholas Bellinger

[SCSI] target: Convert TASK_ATTR to scsi_tcq.h definitions

2011-05-24T17:03:56Z

This patch converts target core and follwing scsi-misc upstream fabric modules to use include/scsi/scsi_tcq.h includes for SIMPLE, HEAD_OF_QUEUE and ORDERED SCSI tasks instead of scsi/libsas.h with TASK_ATTR* *) tcm_loop: Convert tcm_loop_allocate_core_cmd() + tcm_loop_device_reset() to scsi_tcq.h *) tcm_fc: Convert ft_send_cmd() from FCP_PTA_* to scsi_tcq.h Reported-by: Christoph Hellwig Signed-off-by: Nicholas A. Bellinger Signed-off-by: James Bottomley

[SCSI] target: Convert REPORT_LUNs to use int_to_scsilun

2011-05-24T17:02:42Z

This patch converts transport_core_report_lun_response() to use drivers/scsi/scsi_scan.c:int_to_scsilun instead of using the struct target_core_fabric_ops->pack_lun() fabric provided API vector. It also removes the tfo->pack_lun check from target_fabric_tf_ops_check() and removes from struct target_core_fabric_ops->pack_lun() from target_core_fabric_ops.h, and the following mainline scsi-misc fabric modules: *) tcm_loop: Drop tcm_loop_pack_lun() usage *) tcm_fc: Drop ft_pack_lun() usage Reported-by: Mike Christie Signed-off-by: Nicholas A. Bellinger Signed-off-by: James Bottomley