| Commit message (Collapse) | Author | Age | Files | Lines |
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rport_dev_loss_timedout() sets the rport state to SRP_PORT_LOST and the
SCSI target state to SDEV_TRANSPORT_OFFLINE. If this races with
srp_reconnect_work(), a warning is printed:
Mar 27 18:48:07 ictm1604s01h4 kernel: dev_loss_tmo expired for SRP port-18:1 / host18.
Mar 27 18:48:07 ictm1604s01h4 kernel: ------------[ cut here ]------------
Mar 27 18:48:07 ictm1604s01h4 kernel: scsi_internal_device_block(18:0:0:100) failed: ret = -22
Mar 27 18:48:07 ictm1604s01h4 kernel: Call Trace:
Mar 27 18:48:07 ictm1604s01h4 kernel: ? scsi_target_unblock+0x50/0x50 [scsi_mod]
Mar 27 18:48:07 ictm1604s01h4 kernel: starget_for_each_device+0x80/0xb0 [scsi_mod]
Mar 27 18:48:07 ictm1604s01h4 kernel: target_block+0x24/0x30 [scsi_mod]
Mar 27 18:48:07 ictm1604s01h4 kernel: device_for_each_child+0x57/0x90
Mar 27 18:48:07 ictm1604s01h4 kernel: srp_reconnect_rport+0xe4/0x230 [scsi_transport_srp]
Mar 27 18:48:07 ictm1604s01h4 kernel: srp_reconnect_work+0x40/0xc0 [scsi_transport_srp]
Avoid this by not trying to block targets for rports in SRP_PORT_LOST
state.
Link: https://lore.kernel.org/r/20210401091105.8046-1-mwilck@suse.com
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin Wilck <mwilck@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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target_sequencer_start event is triggered inside target_cmd_init_cdb().
se_cmd.tag is not initialized with ITT at the moment so the event always
prints zero tag.
Link: https://lore.kernel.org/r/20210403215415.95077-1-r.bolshakov@yadro.com
Cc: stable@vger.kernel.org # 5.10+
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Roman Bolshakov <r.bolshakov@yadro.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Inbound and outbound queues were not properly configured and that lead to
MPI configuration failure.
Fixes: 05c6c029a44d ("scsi: pm80xx: Increase number of supported queues")
Cc: stable@vger.kernel.org # 5.10+
Link: https://lore.kernel.org/r/20210402054212.17834-1-Viswas.G@microchip.com.com
Reported-and-tested-by: Ash Izat <ash@ai0.uk>
Signed-off-by: Viswas G <Viswas.G@microchip.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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In __ufshcd_issue_tm_cmd(), it is not correct to use hba->nutrs + req->tag
as the Task Tag in a TMR UPIU. Directly use req->tag as the Task Tag.
Fixes: e293313262d3 ("scsi: ufs: Fix broken task management command implementation")
Link: https://lore.kernel.org/r/1617262750-4864-3-git-send-email-cang@codeaurora.org
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Can Guo <cang@codeaurora.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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ufshcd_tmc_handler() calls blk_mq_tagset_busy_iter(fn = ufshcd_compl_tm()),
but since blk_mq_tagset_busy_iter() only iterates over all reserved tags
and requests which are not in IDLE state, ufshcd_compl_tm() never gets a
chance to run. Thus, TMR always ends up with completion timeout. Fix it by
calling blk_mq_start_request() in __ufshcd_issue_tm_cmd().
Link: https://lore.kernel.org/r/1617262750-4864-2-git-send-email-cang@codeaurora.org
Fixes: 69a6c269c097 ("scsi: ufs: Use blk_{get,put}_request() to allocate and free TMFs")
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Can Guo <cang@codeaurora.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Link: https://lore.kernel.org/r/20210330071958.3788214-3-slyfox@gentoo.org
Fixes: f749d8b7a989 ("scsi: hpsa: Correct dev cmds outstanding for retried cmds")
CC: linux-ia64@vger.kernel.org
CC: storagedev@microchip.com
CC: linux-scsi@vger.kernel.org
CC: Joe Szczypek <jszczype@redhat.com>
CC: Scott Benesh <scott.benesh@microchip.com>
CC: Scott Teel <scott.teel@microchip.com>
CC: Tomas Henzl <thenzl@redhat.com>
CC: "Martin K. Petersen" <martin.petersen@oracle.com>
CC: Don Brace <don.brace@microchip.com>
Reported-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Suggested-by: Don Brace <don.brace@microchip.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Boot failure was observed on an HP rx3600 ia64 machine with RAID bus
controller: Hewlett-Packard Company Smart Array P600:
kernel unaligned access to 0xe000000105dd8b95, ip=0xa000000100b87551
kernel unaligned access to 0xe000000105dd8e95, ip=0xa000000100b87551
hpsa 0000:14:01.0: Controller reports max supported commands of 0 Using 16 instead. Ensure that firmware is up to date.
swapper/0[1]: error during unaligned kernel access
The unaligned access comes from 'struct CommandList' that happens to be
packed. Commit f749d8b7a989 ("scsi: hpsa: Correct dev cmds outstanding for
retried cmds") introduced unexpected padding and unaligned atomic_t from
natural alignment to something else.
This change removes packing annotation from a struct not intended to be
sent to controller as is. This restores natural `atomic_t` alignment.
The change was tested on the same rx3600 machine.
Link: https://lore.kernel.org/r/20210330071958.3788214-2-slyfox@gentoo.org
Fixes: f749d8b7a989 ("scsi: hpsa: Correct dev cmds outstanding for retried cmds")
CC: linux-ia64@vger.kernel.org
CC: linux-kernel@vger.kernel.org
CC: storagedev@microchip.com
CC: linux-scsi@vger.kernel.org
CC: Joe Szczypek <jszczype@redhat.com>
CC: Scott Benesh <scott.benesh@microchip.com>
CC: Scott Teel <scott.teel@microchip.com>
CC: Tomas Henzl <thenzl@redhat.com>
CC: "Martin K. Petersen" <martin.petersen@oracle.com>
CC: Don Brace <don.brace@microchip.com>
Reported-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Suggested-by: Don Brace <don.brace@microchip.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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The hpsa driver uses data structures which contain a combination of driver
internals and commands sent directly to the hardware. To manage alignment
for the hardware portions the driver used #pragma pack(1).
Commit f749d8b7a989 ("scsi: hpsa: Correct dev cmds outstanding for retried
cmds") switched an existing variable from int to bool. Due to the pragma an
atomic_t in the same data structure ended up being misaligned and broke
boot on ia64.
Add __packed to every struct and union in the header file. Subsequent
commits will address the actual atomic_t misalignment regression.
The commit is a no-op at least on ia64:
$ diff -u <(objdump -d -r old.o) <(objdump -d -r new.o)
Link: https://lore.kernel.org/r/20210330071958.3788214-1-slyfox@gentoo.org
Fixes: f749d8b7a989 ("scsi: hpsa: Correct dev cmds outstanding for retried cmds")
CC: linux-ia64@vger.kernel.org
CC: storagedev@microchip.com
CC: linux-scsi@vger.kernel.org
CC: Joe Szczypek <jszczype@redhat.com>
CC: Scott Benesh <scott.benesh@microchip.com>
CC: Scott Teel <scott.teel@microchip.com>
CC: Tomas Henzl <thenzl@redhat.com>
CC: "Martin K. Petersen" <martin.petersen@oracle.com>
CC: Don Brace <don.brace@microchip.com>
Reported-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Suggested-by: Don Brace <don.brace@microchip.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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A kernel panic was observed due to a timing issue between the sync thread
and the initiator processing a login response from the target. The session
reopen can be invoked both from the session sync thread when iscsid
restarts and from iscsid through the error handler. Before the initiator
receives the response to a login, another reopen request can be sent from
the error handler/sync session. When the initial login response is
subsequently processed, the connection has been closed and the socket has
been released.
To fix this a new connection state, ISCSI_CONN_BOUND, is added:
- Set the connection state value to ISCSI_CONN_DOWN upon
iscsi_if_ep_disconnect() and iscsi_if_stop_conn()
- Set the connection state to the newly created value ISCSI_CONN_BOUND
after bind connection (transport->bind_conn())
- In iscsi_set_param(), return -ENOTCONN if the connection state is not
either ISCSI_CONN_BOUND or ISCSI_CONN_UP
Link: https://lore.kernel.org/r/20210325093248.284678-1-gulam.mohamed@oracle.com
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Gulam Mohamed <gulam.mohamed@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
index 91074fd97f64..f4bf62b007a0 100644
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If pscsi_map_sg() fails, make sure to drop references to already allocated
bios.
Link: https://lore.kernel.org/r/20210323212431.15306-2-mwilck@suse.com
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Lee Duncan <lduncan@suse.com>
Signed-off-by: Martin Wilck <mwilck@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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pscsi_map_sg() uses the variable nr_pages as a hint for bio_kmalloc() how
many vector elements to allocate. If nr_pages is < BIO_MAX_PAGES, it will
be reset to 0 after successful allocation of the bio.
If bio_add_pc_page() fails later for whatever reason, pscsi_map_sg() tries
to allocate another bio, passing nr_vecs = 0. This causes bio_add_pc_page()
to fail immediately in the next call. pci_map_sg() continues to allocate
zero-length bios until memory is exhausted and the kernel crashes with
OOM. This can be easily observed by exporting a SATA DVD drive via pscsi.
The target crashes as soon as the client tries to access the DVD LUN. In
the case I analyzed, bio_add_pc_page() would fail because the DVD device's
max_sectors_kb (128) was exceeded.
Avoid this by simply not resetting nr_pages to 0 after allocating the
bio. This way, the client receives an I/O error when it tries to send
requests exceeding the devices max_sectors_kb, and eventually gets it
right. The client must still limit max_sectors_kb e.g. by an udev rule if
(like in my case) the driver doesn't report valid block limits, otherwise
it encounters I/O errors.
Link: https://lore.kernel.org/r/20210323212431.15306-1-mwilck@suse.com
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Lee Duncan <lduncan@suse.com>
Signed-off-by: Martin Wilck <mwilck@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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When kzalloc() returns NULL, no error return code of mpt3sas_base_attach()
is assigned. To fix this bug, r is assigned with -ENOMEM in this case.
Link: https://lore.kernel.org/r/20210308035241.3288-1-baijiaju1990@gmail.com
Fixes: c696f7b83ede ("scsi: mpt3sas: Implement device_remove_in_progress check in IOCTL path")
Reported-by: TOTE Robot <oslab@tsinghua.edu.cn>
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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When kzalloc() returns NULL to qedi->global_queues[i], no error return code
of qedi_alloc_global_queues() is assigned. To fix this bug, status is
assigned with -ENOMEM in this case.
Link: https://lore.kernel.org/r/20210308033024.27147-1-baijiaju1990@gmail.com
Fixes: ace7f46ba5fd ("scsi: qedi: Add QLogic FastLinQ offload iSCSI driver framework.")
Reported-by: TOTE Robot <oslab@tsinghua.edu.cn>
Acked-by: Manish Rangankar <mrangankar@marvell.com>
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Calling vha->hw->tgt.tgt_ops->free_cmd() from qlt_xmit_response() is wrong
since the command for which a response is sent must remain valid until the
SCSI target core calls .release_cmd(). It has been observed that the
following scenario triggers a kernel crash:
- qlt_xmit_response() calls qlt_check_reserve_free_req()
- qlt_check_reserve_free_req() returns -EAGAIN
- qlt_xmit_response() calls vha->hw->tgt.tgt_ops->free_cmd(cmd)
- transport_handle_queue_full() tries to retransmit the response
Fix this crash by reverting the patch that introduced it.
Link: https://lore.kernel.org/r/20210320232359.941-2-bvanassche@acm.org
Fixes: 0dcec41acb85 ("scsi: qla2xxx: Make sure that aborted commands are freed")
Cc: Quinn Tran <qutran@marvell.com>
Cc: Mike Christie <michael.christie@oracle.com>
Reviewed-by: Daniel Wagner <dwagner@suse.de>
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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During MQ enablement of the ibmvfc driver ibmvfc_wait_for_ops() was
missed. This function is responsible for waiting on commands to complete
that match a certain criteria such as LUN or cancel key. The implementation
as is only scans the CRQ for events ignoring any sub-queues and as a result
will exit successfully without doing anything when operating in MQ
channelized mode.
Check the MQ and channel use flags to determine which queues are
applicable, and scan each queue accordingly. Note in MQ mode SCSI commands
are only issued down sub-queues and the CRQ is only used for driver
specific management commands. As such the CRQ events are ignored when
operating in MQ mode with channels.
Link: https://lore.kernel.org/r/20210319205029.312969-3-tyreld@linux.ibm.com
Fixes: 9000cb998bcf ("scsi: ibmvfc: Enable MQ and set reasonable defaults")
Reviewed-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Tyrel Datwyler <tyreld@linux.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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For various EH activities the ibmvfc driver uses ibmvfc_wait_for_ops() to
wait for the completion of commands that match a given criteria be it
cancel key, or specific LUN. With recent changes commands are completed
outside the lock in bulk by removing them from the sent list and adding
them to a private completion list. This introduces a potential race in
ibmvfc_wait_for_ops() since the criteria for a command to be outstanding is
no longer simply being on the sent list, but instead not being on the free
list.
Avoid this race by scanning the entire command event pool and checking that
any matching command that ibmvfc needs to wait on is not already on the
free list.
Link: https://lore.kernel.org/r/20210319205029.312969-2-tyreld@linux.ibm.com
Fixes: 1f4a4a19508d ("scsi: ibmvfc: Complete commands outside the host/queue lock")
Reviewed-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Tyrel Datwyler <tyreld@linux.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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mpt3sas_get_port_by_id() can be called when a spinlock is held. Use
GFP_ATOMIC instead of GFP_KERNEL when allocating memory.
Issue spotted by call_kern.cocci:
./drivers/scsi/mpt3sas/mpt3sas_scsih.c:416:42-52: ERROR: function mpt3sas_get_port_by_id called on line 7125 inside lock on line 7123 but uses GFP_KERNEL
./drivers/scsi/mpt3sas/mpt3sas_scsih.c:416:42-52: ERROR: function mpt3sas_get_port_by_id called on line 6842 inside lock on line 6839 but uses GFP_KERNEL
./drivers/scsi/mpt3sas/mpt3sas_scsih.c:416:42-52: ERROR: function mpt3sas_get_port_by_id called on line 6854 inside lock on line 6851 but uses GFP_KERNEL
./drivers/scsi/mpt3sas/mpt3sas_scsih.c:416:42-52: ERROR: function mpt3sas_get_port_by_id called on line 7706 inside lock on line 7702 but uses GFP_KERNEL
./drivers/scsi/mpt3sas/mpt3sas_scsih.c:416:42-52: ERROR: function mpt3sas_get_port_by_id called on line 10260 inside lock on line 10256 but uses GFP_KERNEL
Link: https://lore.kernel.org/r/20210220093951.905362-1-christophe.jaillet@wanadoo.fr
Fixes: 324c122fc0a4 ("scsi: mpt3sas: Add module parameter multipath_on_hba")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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The "lpm" and "->enabled" are all boolean. We should be using &&
rather than the bit operator.
Link: https://lore.kernel.org/r/1615896915-148864-1-git-send-email-dj0227@163.com
Fixes: 488edafb1120 ("scsi: ufs-mediatek: Introduce low-power mode for device power supply")
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: dongjian <dongjian@yulong.com>
Signed-off-by: Yue Hu <huyue2@yulong.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Recent changes changed the completion of SCSI commands from Soft-IRQ
context to IRQ context. This triggers the following warning, when we're
completing writes to zoned block devices that go through the zone append
emulation:
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.12.0-rc2+ #2
Hardware name: Supermicro Super Server/X10SRL-F, BIOS 2.0 12/17/2015
RIP: 0010:__local_bh_disable_ip+0x3f/0x50
RSP: 0018:ffff8883e1409ba8 EFLAGS: 00010006
RAX: 0000000080010001 RBX: 0000000000000001 RCX: 0000000000000013
RDX: ffff888129e4d200 RSI: 0000000000000201 RDI: ffffffff915b9dbd
RBP: ffff888113e9a540 R08: ffff888113e9a540 R09: 00000000000077f0
R10: 0000000000080000 R11: 0000000000000001 R12: ffff888129e4d200
R13: 0000000000001000 R14: 00000000000077f0 R15: ffff888129e4d218
FS: 0000000000000000(0000) GS:ffff8883e1400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2f8418ebc0 CR3: 000000021202a006 CR4: 00000000001706f0
Call Trace:
<IRQ>
_raw_spin_lock_bh+0x18/0x40
sd_zbc_complete+0x43d/0x1150
sd_done+0x631/0x1040
? mark_lock+0xe4/0x2fd0
? provisioning_mode_store+0x3f0/0x3f0
scsi_finish_command+0x31b/0x5c0
_scsih_io_done+0x960/0x29e0 [mpt3sas]
? mpt3sas_scsih_scsi_lookup_get+0x1c7/0x340 [mpt3sas]
? __lock_acquire+0x166b/0x58b0
? _get_st_from_smid+0x4a/0x80 [mpt3sas]
_base_process_reply_queue+0x23f/0x26e0 [mpt3sas]
? lock_is_held_type+0x98/0x110
? find_held_lock+0x2c/0x110
? mpt3sas_base_sync_reply_irqs+0x360/0x360 [mpt3sas]
_base_interrupt+0x8d/0xd0 [mpt3sas]
? rcu_read_lock_sched_held+0x3f/0x70
__handle_irq_event_percpu+0x24d/0x600
handle_irq_event+0xef/0x240
? handle_irq_event_percpu+0x110/0x110
handle_edge_irq+0x1f6/0xb60
__common_interrupt+0x75/0x160
common_interrupt+0x7b/0xa0
</IRQ>
asm_common_interrupt+0x1e/0x40
Don't use spin_lock_bh() to protect the update of the write pointer offset
cache, but use spin_lock_irqsave() for it.
Link: https://lore.kernel.org/r/3cfebe48d09db73041b7849be71ffbcec7ee40b3.1615369586.git.johannes.thumshirn@wdc.com
Fixes: 664f0dce2058 ("scsi: mpt3sas: Add support for shared host tagset for CPU hotplug")
Reported-by: Shinichiro Kawasaki <shinichiro.kawasaki@wdc.com>
Tested-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com>
Reviewed-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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If copy_from_user() or kstrtoull() fail then the correct behavior is to
return a negative error code.
Link: https://lore.kernel.org/r/YEsbU/UxYypVrC7/@mwanda
Fixes: f9bb2da11db8 ("[SCSI] lpfc 8.3.27: T10 additions for SLI4")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Only half of the file is under include guard because terminating #endif
is placed too early.
Link: https://lore.kernel.org/r/YE4snvoW1SuwcXAn@localhost.localdomain
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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In st_open(), if STp->in_use is true, STp will be freed by
scsi_tape_put(). However, STp is still used by DEBC_printk() after. It is
better to DEBC_printk() before scsi_tape_put().
Link: https://lore.kernel.org/r/20210311064636.10522-1-lyl2019@mail.ustc.edu.cn
Acked-by: Kai Mäkisara <kai.makisara@kolumbus.fi>
Signed-off-by: Lv Yunlong <lyl2019@mail.ustc.edu.cn>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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In myrs_cleanup(), cs->mmio_base will be freed twice by iounmap().
Link: https://lore.kernel.org/r/20210311063005.9963-1-lyl2019@mail.ustc.edu.cn
Fixes: 77266186397c ("scsi: myrs: Add Mylex RAID controller (SCSI interface)")
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Lv Yunlong <lyl2019@mail.ustc.edu.cn>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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The buffer for negotiating channel setup is DMA allocated at device probe
time. However, the remove path fails to free this allocation which will
prevent the hypervisor from releasing the virtual device in the case of a
hotplug remove.
Fix this issue by freeing the buffer allocation in ibmvfc_free_mem().
Link: https://lore.kernel.org/r/20210311012212.428068-1-tyreld@linux.ibm.com
Fixes: e95eef3fc0bc ("scsi: ibmvfc: Implement channel enquiry and setup commands")
Signed-off-by: Tyrel Datwyler <tyreld@linux.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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The entries in the source files are removed as well.
Link: https://lore.kernel.org/r/20210226234347.21535-1-vbhakta@vmware.com
Signed-off-by: Vishal Bhakta <vbhakta@vmware.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Fix the following coccicheck warning:
./drivers/scsi/ufs/ufshcd.c:1538:8-16: WARNING: use scnprintf or
sprintf.
Link: https://lore.kernel.org/r/1614665298-115183-1-git-send-email-jiapeng.chong@linux.alibaba.com
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Runtime and system suspend/resume can only come after hba probe invokes
platform_set_drvdata(pdev, hba), meaning hba cannot be NULL in these PM
callbacks, so remove the checks of !hba.
Link: https://lore.kernel.org/r/1614145010-36079-4-git-send-email-cang@codeaurora.org
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Can Guo <cang@codeaurora.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Disable interrupt in reset path to flush pending IRQ handler in order to
avoid possible NoC issues.
Link: https://lore.kernel.org/r/1614145010-36079-3-git-send-email-cang@codeaurora.org
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Nitin Rawat <nitirawa@codeaurora.org>
Signed-off-by: Can Guo <cang@codeaurora.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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In error handling prepare stage, after SCSI requests are blocked, do a
down/up_write(clk_scaling_lock) to clean up the queuecommand() path.
Meanwhile, stop eeh_work in case it disturbs error recovery. Moreover,
reset ufshcd_state at the entrance of ufshcd_probe_hba(), since it may be
called multiple times during error recovery.
Link: https://lore.kernel.org/r/1614145010-36079-2-git-send-email-cang@codeaurora.org
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Can Guo <cang@codeaurora.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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A live partition migration (LPM) results in a CRQ disconnect similar to a
hard reset. In this LPM case the hypervisor mostly preserves the CRQ
transport such that it simply needs to be reenabled. However, the
capabilities may have changed such as fewer channels, or no channels at
all. Further, its possible that there may be sub-CRQ support, but no
channel support. The CRQ reenable path currently doesn't take any of this
into consideration.
For simplicity release and reinitialize sub-CRQs during reenable, and set
do_enquiry and using_channels with the appropriate values to trigger
channel renegotiation.
Link: https://lore.kernel.org/r/20210302230543.9905-6-tyreld@linux.ibm.com
Fixes: 3034ebe26389 ("scsi: ibmvfc: Add alloc/dealloc routines for SCSI Sub-CRQ Channels")
Reviewed-by: Brian King <brking@linux.ibm.com>
Signed-off-by: Tyrel Datwyler <tyreld@linux.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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The H_FREE_SUB_CRQ hypercall can return a retry delay return code that
indicates the call needs to be retried after a specific amount of time
delay. The error path to free a sub-CRQ in case of a failure during channel
registration fails to capture the return code of H_FREE_SUB_CRQ which will
result in the delay loop being skipped in the case of a retry delay return
code.
Store the return code result of the H_FREE_SUB_CRQ call such that the
return code check in the delay loop evaluates a meaningful value. Also, use
the rtas_busy_delay() to check the rc value and delay for the appropriate
amount of time.
Link: https://lore.kernel.org/r/20210302230543.9905-5-tyreld@linux.ibm.com
Fixes: 39e461fddff0 ("scsi: ibmvfc: Map/request irq and register Sub-CRQ interrupt handler")
Reviewed-by: Brian King <brking@linux.ibm.com>
Signed-off-by: Tyrel Datwyler <tyreld@linux.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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A non-zero return code for H_REG_SUB_CRQ is currently treated as a failure
resulting in failing sub-CRQ setup. The case of H_CLOSED should not be
treated as a failure. This return code translates to a successful sub-CRQ
registration by the hypervisor, and is meant to communicate back that there
is currently no partner VIOS CRQ connection established as of yet. This is
a common occurrence during a disconnect where the client adapter can
possibly come back up prior to the partner adapter.
For non-zero return code from H_REG_SUB_CRQ treat a H_CLOSED as success so
that sub-CRQs are successfully setup.
Link: https://lore.kernel.org/r/20210302230543.9905-4-tyreld@linux.ibm.com
Fixes: 3034ebe26389 ("scsi: ibmvfc: Add alloc/dealloc routines for SCSI Sub-CRQ Channels")
Reviewed-by: Brian King <brking@linux.ibm.com>
Signed-off-by: Tyrel Datwyler <tyreld@linux.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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A hard reset results in a complete transport disconnect such that the CRQ
connection with the partner VIOS is broken. This has the side effect of
also invalidating the associated sub-CRQs. The current code assumes that
the sub-CRQs are perserved resulting in a protocol violation after trying
to reconnect them with the VIOS. This introduces an infinite loop such that
the VIOS forces a disconnect after each subsequent attempt to re-register
with invalid handles.
Avoid the aforementioned issue by releasing the sub-CRQs prior to CRQ
disconnect, and driving a reinitialization of the sub-CRQs once a new CRQ
is registered with the hypervisor.
Link: https://lore.kernel.org/r/20210302230543.9905-3-tyreld@linux.ibm.com
Fixes: 3034ebe26389 ("scsi: ibmvfc: Add alloc/dealloc routines for SCSI Sub-CRQ Channels")
Reviewed-by: Brian King <brking@linux.ibm.com>
Signed-off-by: Tyrel Datwyler <tyreld@linux.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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If ibmvfc_init_sub_crqs() fails ibmvfc_probe() simply parrots registration
failure reported elsewhere, and futher vhost->scsi_scrq.scrq == NULL is
indication enough to the driver that it has no sub-CRQs available. The
mq_enabled check can also be moved into ibmvfc_init_sub_crqs() such that
each caller doesn't have to gate the call with a mq_enabled check. Finally,
in the case of sub-CRQ setup failure setting do_enquiry can be turned off
to putting the driver into single queue fallback mode.
The aforementioned changes also simplify the next patch in the series that
fixes a hard reset issue, by tying a sub-CRQ setup failure and do_enquiry
logic into ibmvfc_init_sub_crqs().
Link: https://lore.kernel.org/r/20210302230543.9905-2-tyreld@linux.ibm.com
Reviewed-by: Brian King <brking@linux.ibm.com>
Signed-off-by: Tyrel Datwyler <tyreld@linux.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Pull ide fix from Jens Axboe:
"This is a leftover fix from 5.11, where I forgot to ship it your way"
* tag 'ide-5.11-2021-02-28' of git://git.kernel.dk/linux-block:
ide/falconide: Fix module unload
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Unloading the falconide module results in a crash:
Unable to handle kernel NULL pointer dereference at virtual address 00000000
Oops: 00000000
Modules linked in: falconide(-)
PC: [<002930b2>] ide_host_remove+0x2e/0x1d2
SR: 2000 SP: 00b49e28 a2: 009b0f90
d0: 00000000 d1: 009b0f90 d2: 00000000 d3: 00b48000
d4: 003cef32 d5: 00299188 a0: 0086d000 a1: 0086d000
Process rmmod (pid: 322, task=009b0f90)
Frame format=7 eff addr=00000000 ssw=0505 faddr=00000000
wb 1 stat/addr/data: 0000 00000000 00000000
wb 2 stat/addr/data: 0000 00000000 00000000
wb 3 stat/addr/data: 0000 00000000 00018da9
push data: 00000000 00000000 00000000 00000000
Stack from 00b49e90:
004c456a 0027f176 0027cb0a 0027cb9e 00000000 0086d00a 2187d3f0 0027f0e0
00b49ebc 2187d1f6 00000000 00b49ec8 002811e8 0086d000 00b49ef0 0028024c
0086d00a 002800d6 00279a1a 00000001 00000001 0086d00a 2187d3f0 00279a58
00b49f1c 002802e0 0086d00a 2187d3f0 004c456a 0086d00a ef96af74 00000000
2187d3f0 002805d2 800de064 00b49f44 0027f088 2187d3f0 00ac1cf4 2187d3f0
004c43be 2187d3f0 00000000 2187d3f0 800b66a8 00b49f5c 00280776 2187d3f0
Call Trace: [<0027f176>] __device_driver_unlock+0x0/0x48
[<0027cb0a>] device_links_busy+0x0/0x94
[<0027cb9e>] device_links_unbind_consumers+0x0/0x130
[<0027f0e0>] __device_driver_lock+0x0/0x5a
[<2187d1f6>] falconide_remove+0x12/0x18 [falconide]
[<002811e8>] platform_drv_remove+0x1c/0x28
[<0028024c>] device_release_driver_internal+0x176/0x17c
[<002800d6>] device_release_driver_internal+0x0/0x17c
[<00279a1a>] get_device+0x0/0x22
[<00279a58>] put_device+0x0/0x18
[<002802e0>] driver_detach+0x56/0x82
[<002805d2>] driver_remove_file+0x0/0x24
[<0027f088>] bus_remove_driver+0x4c/0xa4
[<00280776>] driver_unregister+0x28/0x5a
[<00281a00>] platform_driver_unregister+0x12/0x18
[<2187d2a0>] ide_falcon_driver_exit+0x10/0x16 [falconide]
[<000764f0>] sys_delete_module+0x110/0x1f2
[<000e83ea>] sys_rename+0x1a/0x1e
[<00002e0c>] syscall+0x8/0xc
[<00188004>] ext4_multi_mount_protect+0x35a/0x3ce
Code: 0029 9188 4bf9 0027 aa1c 283c 003c ef32 <265c> 4a8b 6700 00b8 2043 2028 000c 0280 00ff ff00 6600 0176 40c0 7202 b2b9 004c
Disabling lock debugging due to kernel taint
This happens because the driver_data pointer is uninitialized.
Add the missing platform_set_drvdata() call. For clarity, use the
matching platform_get_drvdata() as well.
Cc: Michael Schmitz <schmitzmic@gmail.com>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Fixes: 5ed0794cde593 ("m68k/atari: Convert Falcon IDE drivers to platform drivers")
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Michael Schmitz <schmitzmic@gmail.com>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Pull more SCSI updates from James Bottomley:
"This is a few driver updates (iscsi, mpt3sas) that were still in the
staging queue when the merge window opened (all committed on or before
8 Feb) and some small bug fixes which came in during the merge window
(all committed on 22 Feb)"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (30 commits)
scsi: hpsa: Correct dev cmds outstanding for retried cmds
scsi: sd: Fix Opal support
scsi: target: tcmu: Fix memory leak caused by wrong uio usage
scsi: target: tcmu: Move some functions without code change
scsi: sd: sd_zbc: Don't pass GFP_NOIO to kvcalloc
scsi: aic7xxx: Remove unused function pointer typedef ahc_bus_suspend/resume_t
scsi: bnx2fc: Fix Kconfig warning & CNIC build errors
scsi: ufs: Fix a duplicate dev quirk number
scsi: aic79xx: Fix spelling of version
scsi: target: core: Prevent underflow for service actions
scsi: target: core: Add cmd length set before cmd complete
scsi: iscsi: Drop session lock in iscsi_session_chkready()
scsi: qla4xxx: Use iscsi_is_session_online()
scsi: libiscsi: Reset max/exp cmdsn during recovery
scsi: iscsi_tcp: Fix shost can_queue initialization
scsi: libiscsi: Add helper to calculate max SCSI cmds per session
scsi: libiscsi: Fix iSCSI host workq destruction
scsi: libiscsi: Fix iscsi_task use after free()
scsi: libiscsi: Drop taskqueuelock
scsi: libiscsi: Fix iscsi_prep_scsi_cmd_pdu() error handling
...
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Prevent incrementing device->commands_outstanding for ioaccel command
retries that are driver initiated. If the command goes through the retry
path, the device->commands_outstanding counter has already accounted for
the number of commands outstanding to the device. Only commands going
through function hpsa_cmd_resolve_events decrement this counter.
- ioaccel commands go to either HBA disks or to logical volumes comprised
of SSDs.
The extra increment is causing device resets to hang.
- Resets wait for all device outstanding commands to complete before
returning.
Replace unused field abort_pending with retry_pending. This is a
maintenance driver so these changes have the least impact/risk.
Link: https://lore.kernel.org/r/161342801747.29388.13045495968308188518.stgit@brunhilda
Tested-by: Joe Szczypek <jszczype@redhat.com>
Reviewed-by: Scott Benesh <scott.benesh@microchip.com>
Reviewed-by: Scott Teel <scott.teel@microchip.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: Don Brace <don.brace@microchip.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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The SCSI core has been modified recently such that it only processes PM
requests if rpm_status != RPM_ACTIVE. Since some Opal requests are
submitted while rpm_status != RPM_ACTIVE, set flag RQF_PM for Opal
requests.
See also https://bugzilla.kernel.org/show_bug.cgi?id=211227.
[mkp: updated sha for PM patch]
Link: https://lore.kernel.org/r/20210222021042.3534-1-bvanassche@acm.org
Fixes: d80210f25ff0 ("sd: add support for TCG OPAL self encrypting disks")
Fixes: e6044f714b25 ("scsi: core: Only process PM requests if rpm_status != RPM_ACTIVE")
Cc: chriscjsus@yahoo.com
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: stable@vger.kernel.org
Reported-by: chriscjsus@yahoo.com
Tested-by: chriscjsus@yahoo.com
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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When user deletes a tcmu device via configFS, tcmu calls
uio_unregister_device(). During that call uio resets its pointer to struct
uio_info provided by tcmu. That means, after uio_unregister_device() uio
will no longer execute any of the callbacks tcmu had set in uio_info.
Especially, if userspace daemon still holds the corresponding uio device
open or mmap'ed while tcmu calls uio_unregister_device(), uio will not call
tcmu_release() when userspace finally closes and munmaps the uio device.
Since tcmu does refcounting for the tcmu device in tcmu_open() and
tcmu_release(), in the decribed case refcount does not drop to 0 and tcmu
does not free tcmu device's resources. In extreme cases this can cause
memory leaking of up to 1 GB for a single tcmu device.
After uio_unregister_device(), uio will reject every open, read, write,
mmap from userspace with -EOI. But userspace daemon can still access the
mmap'ed command ring and data area. Therefore tcmu should wait until
userspace munmaps the uio device before it frees the resources, as we don't
want to cause SIGSEGV or SIGBUS to user space.
That said, current refcounting during tcmu_open and tcmu_release does not
work correctly, and refcounting better should be done in the open and close
callouts of the vm_operations_struct, which tcmu assigns to each mmap of
the uio device (because it wants its own page fault handler).
This patch fixes the memory leak by removing refcounting from tcmu_open and
tcmu_close, and instead adding new tcmu_vma_open() and tcmu_vma_close()
handlers that only do refcounting.
Link: https://lore.kernel.org/r/20210218175039.7829-3-bostroesser@gmail.com
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Bodo Stroesser <bostroesser@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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This patch just moves one block of code containing some functions inside
target_core_user.c to avoid adding prototypes in next patch.
Link: https://lore.kernel.org/r/20210218175039.7829-2-bostroesser@gmail.com
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Bodo Stroesser <bostroesser@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Dan reported we're passing in GFP_NOIO to kvmalloc() which will then
fallback to doing kmalloc() instead of an optional vmalloc() if the size
exceeds kmalloc()s limits. This will break with drives that have zone
numbers exceeding PAGE_SIZE/sizeof(u32).
Instead of passing in GFP_NOIO, enter an implicit GFP_NOIO allocation
scope.
Link: https://lore.kernel.org/r/YCuvSfKw4qEQBr/t@mwanda
Link: https://lore.kernel.org/r/5a6345e2989fd06c049ac4e4627f6acb492c15b8.1613569821.git.johannes.thumshirn@wdc.com
Fixes: 5795eb443060: ("scsi: sd_zbc: emulate ZONE_APPEND commands")
Cc: Damien Le Moal <Damien.LeMoal@wdc.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Remove the 'ahc_bus_suspend/resume_t' typedef as it is not used.
Link: https://lore.kernel.org/r/1613389249-3409-1-git-send-email-chen45464546@163.com
Signed-off-by: Chen Lin <chen.lin5@zte.com.cn>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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CNIC depends on MMU, but since 'select' does not follow any dependency
chains, SCSI_BNX2X_FCOE also needs to depend on MMU, so that erroneous
configs are not generated, which cause build errors in cnic.
WARNING: unmet direct dependencies detected for CNIC
Depends on [n]: NETDEVICES [=y] && ETHERNET [=y] && NET_VENDOR_BROADCOM [=y] && PCI [=y] && (IPV6 [=n] || IPV6 [=n]=n) && MMU [=n]
Selected by [y]:
- SCSI_BNX2X_FCOE [=y] && SCSI_LOWLEVEL [=y] && SCSI [=y] && PCI [=y] && (IPV6 [=n] || IPV6 [=n]=n) && LIBFC [=y] && LIBFCOE [=y]
riscv64-linux-ld: drivers/net/ethernet/broadcom/cnic.o: in function `.L154':
cnic.c:(.text+0x1094): undefined reference to `uio_event_notify'
riscv64-linux-ld: cnic.c:(.text+0x10bc): undefined reference to `uio_event_notify'
riscv64-linux-ld: drivers/net/ethernet/broadcom/cnic.o: in function `.L1442':
cnic.c:(.text+0x96a8): undefined reference to `__uio_register_device'
riscv64-linux-ld: drivers/net/ethernet/broadcom/cnic.o: in function `.L0 ':
cnic.c:(.text.unlikely+0x68): undefined reference to `uio_unregister_device'
Link: https://lore.kernel.org/r/20210213192428.22537-1-rdunlap@infradead.org
Fixes: 853e2bd2103a ("[SCSI] bnx2fc: Broadcom FCoE offload driver")
Cc: Saurav Kashyap <skashyap@marvell.com>
Cc: Javed Hasan <jhasan@marvell.com>
Cc: GR-QLogic-Storage-Upstream@marvell.com
Cc: "James E.J. Bottomley" <jejb@linux.ibm.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: linux-scsi@vger.kernel.org
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Fixes: 2b2bfc8aa519 ("scsi: ufs: Introduce a quirk to allow only page-aligned sg entries")
Link: https://lore.kernel.org/r/20210211104638.292499-1-avri.altman@wdc.com
Reviewed-by: Bean Huo <beanhuo@micron.com>
Signed-off-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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s/verson/version/
Link: https://lore.kernel.org/r/20210209143146.3987352-1-unixbhaskar@gmail.com
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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TCM buffer length doesn't necessarily equal 8 + ADDITIONAL LENGTH which
might be considered an underflow in case of Data-In size being greater than
8 + ADDITIONAL LENGTH. So truncate buffer length to prevent underflow.
Link: https://lore.kernel.org/r/20210209072202.41154-3-a.miloserdov@yadro.com
Reviewed-by: Roman Bolshakov <r.bolshakov@yadro.com>
Reviewed-by: Bodo Stroesser <bostroesser@gmail.com>
Signed-off-by: Aleksandr Miloserdov <a.miloserdov@yadro.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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TCM doesn't properly handle underflow case for service actions. One way to
prevent it is to always complete command with
target_complete_cmd_with_length(), however it requires access to data_sg,
which is not always available.
This change introduces target_set_cmd_data_length() function which allows
to set command data length before completing it.
Link: https://lore.kernel.org/r/20210209072202.41154-2-a.miloserdov@yadro.com
Reviewed-by: Roman Bolshakov <r.bolshakov@yadro.com>
Reviewed-by: Bodo Stroesser <bostroesser@gmail.com>
Signed-off-by: Aleksandr Miloserdov <a.miloserdov@yadro.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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The session lock in iscsi_session_chkready() is not needed because when we
transition from logged into to another state we will block and/or remove
the devices under the session, so no new I/O will be sent to the drivers
after the block/remove. I/O that races with the block/removal is cleaned up
by the drivers when it handles all outstanding I/O, so this just added an
extra lock in the main I/O path. This patch removes the lock like other
transport classes.
Link: https://lore.kernel.org/r/20210207044608.27585-10-michael.christie@oracle.com
Reviewed-by: Lee Duncan <lduncan@suse.com>
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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__qla4xxx_is_chap_active() just wants to know if a session is online and
does not care about why it's not, so this has it use
iscsi_is_session_online().
This is not a bug now, but the next patch changes the behavior of
iscsi_session_chkready() so this patch just prepares the driver for that
change.
Link: https://lore.kernel.org/r/20210207044608.27585-9-michael.christie@oracle.com
Reviewed-by: Lee Duncan <lduncan@suse.com>
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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