Commit graph

24271 commits

Author SHA1 Message Date
Chandrakanth patil
ad347c4638 scsi: megaraid_sas: Increase register read retry rount from 3 to 30 for selected registers
commit 8e3ed9e786 upstream.

In BMC environments with concurrent access to multiple registers, certain
registers occasionally yield a value of 0 even after 3 retries due to
hardware errata. As a fix, we have extended the retry count from 3 to 30.

The same errata applies to the mpt3sas driver, and a similar patch has
been accepted. Please find more details in the mpt3sas patch reference
link.

Link: https://lore.kernel.org/r/20230829090020.5417-2-ranjan.kumar@broadcom.com
Fixes: 272652fcbf ("scsi: megaraid_sas: add retry logic in megasas_readl")
Cc: stable@vger.kernel.org
Signed-off-by: Chandrakanth patil <chandrakanth.patil@broadcom.com>
Signed-off-by: Sumit Saxena <sumit.saxena@broadcom.com>
Link: https://lore.kernel.org/r/20231003110021.168862-2-chandrakanth.patil@broadcom.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-11-28 17:19:55 +00:00
Ranjan Kumar
b6b6294f82 scsi: mpt3sas: Fix loop logic
commit 3c978492c3 upstream.

The retry loop continues to iterate until the count reaches 30, even after
receiving the correct value. Exit loop when a non-zero value is read.

Fixes: 4ca10f3e31 ("scsi: mpt3sas: Perform additional retries if doorbell read returns 0")
Cc: stable@vger.kernel.org
Signed-off-by: Ranjan Kumar <ranjan.kumar@broadcom.com>
Link: https://lore.kernel.org/r/20231020105849.6350-1-ranjan.kumar@broadcom.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-11-28 17:19:55 +00:00
Wenchao Hao
6b9ecf4e10 scsi: libfc: Fix potential NULL pointer dereference in fc_lport_ptp_setup()
[ Upstream commit 4df105f0ce ]

fc_lport_ptp_setup() did not check the return value of fc_rport_create()
which can return NULL and would cause a NULL pointer dereference. Address
this issue by checking return value of fc_rport_create() and log error
message on fc_rport_create() failed.

Signed-off-by: Wenchao Hao <haowenchao2@huawei.com>
Link: https://lore.kernel.org/r/20231011130350.819571-1-haowenchao2@huawei.com
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-28 17:19:43 +00:00
Tyrel Datwyler
8bbe784c2f scsi: ibmvfc: Remove BUG_ON in the case of an empty event pool
[ Upstream commit b39f2d10b8 ]

In practice the driver should never send more commands than are allocated
to a queue's event pool. In the unlikely event that this happens, the code
asserts a BUG_ON, and in the case that the kernel is not configured to
crash on panic returns a junk event pointer from the empty event list
causing things to spiral from there. This BUG_ON is a historical artifact
of the ibmvfc driver first being upstreamed, and it is well known now that
the use of BUG_ON is bad practice except in the most unrecoverable
scenario. There is nothing about this scenario that prevents the driver
from recovering and carrying on.

Remove the BUG_ON in question from ibmvfc_get_event() and return a NULL
pointer in the case of an empty event pool. Update all call sites to
ibmvfc_get_event() to check for a NULL pointer and perfrom the appropriate
failure or recovery action.

Signed-off-by: Tyrel Datwyler <tyreld@linux.ibm.com>
Link: https://lore.kernel.org/r/20230921225435.3537728-2-tyreld@linux.ibm.com
Reviewed-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-28 17:19:42 +00:00
Yihang Li
b4465009e7 scsi: hisi_sas: Set debugfs_dir pointer to NULL after removing debugfs
[ Upstream commit 6de426f927 ]

If init debugfs failed during device registration due to memory allocation
failure, debugfs_remove_recursive() is called, after which debugfs_dir is
not set to NULL. debugfs_remove_recursive() will be called again during
device removal. As a result, illegal pointer is accessed.

[ 1665.467244] hisi_sas_v3_hw 0000:b4:02.0: failed to init debugfs!
...
[ 1669.836708] Unable to handle kernel NULL pointer dereference at virtual address 00000000000000a0
[ 1669.872669] pc : down_write+0x24/0x70
[ 1669.876315] lr : down_write+0x1c/0x70
[ 1669.879961] sp : ffff000036f53a30
[ 1669.883260] x29: ffff000036f53a30 x28: ffffa027c31549f8
[ 1669.888547] x27: ffffa027c3140000 x26: 0000000000000000
[ 1669.893834] x25: ffffa027bf37c270 x24: ffffa027bf37c270
[ 1669.899122] x23: ffff0000095406b8 x22: ffff0000095406a8
[ 1669.904408] x21: 0000000000000000 x20: ffffa027bf37c310
[ 1669.909695] x19: 00000000000000a0 x18: ffff8027dcd86f10
[ 1669.914982] x17: 0000000000000000 x16: 0000000000000000
[ 1669.920268] x15: 0000000000000000 x14: ffffa0274014f870
[ 1669.925555] x13: 0000000000000040 x12: 0000000000000228
[ 1669.930842] x11: 0000000000000020 x10: 0000000000000bb0
[ 1669.936129] x9 : ffff000036f537f0 x8 : ffff80273088ca10
[ 1669.941416] x7 : 000000000000001d x6 : 00000000ffffffff
[ 1669.946702] x5 : ffff000008a36310 x4 : ffff80273088be00
[ 1669.951989] x3 : ffff000009513e90 x2 : 0000000000000000
[ 1669.957276] x1 : 00000000000000a0 x0 : ffffffff00000001
[ 1669.962563] Call trace:
[ 1669.965000]  down_write+0x24/0x70
[ 1669.968301]  debugfs_remove_recursive+0x5c/0x1b0
[ 1669.972905]  hisi_sas_debugfs_exit+0x24/0x30 [hisi_sas_main]
[ 1669.978541]  hisi_sas_v3_remove+0x130/0x150 [hisi_sas_v3_hw]
[ 1669.984175]  pci_device_remove+0x48/0xd8
[ 1669.988082]  device_release_driver_internal+0x1b4/0x250
[ 1669.993282]  device_release_driver+0x28/0x38
[ 1669.997534]  pci_stop_bus_device+0x84/0xb8
[ 1670.001611]  pci_stop_and_remove_bus_device_locked+0x24/0x40
[ 1670.007244]  remove_store+0xfc/0x140
[ 1670.010802]  dev_attr_store+0x44/0x60
[ 1670.014448]  sysfs_kf_write+0x58/0x80
[ 1670.018095]  kernfs_fop_write+0xe8/0x1f0
[ 1670.022000]  __vfs_write+0x60/0x190
[ 1670.025472]  vfs_write+0xac/0x1c0
[ 1670.028771]  ksys_write+0x6c/0xd8
[ 1670.032071]  __arm64_sys_write+0x24/0x30
[ 1670.035977]  el0_svc_common+0x78/0x130
[ 1670.039710]  el0_svc_handler+0x38/0x78
[ 1670.043442]  el0_svc+0x8/0xc

To fix this, set debugfs_dir to NULL after debugfs_remove_recursive().

Signed-off-by: Yihang Li <liyihang9@huawei.com>
Signed-off-by: Xingui Yang <yangxingui@huawei.com>
Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Link: https://lore.kernel.org/r/1694571327-78697-2-git-send-email-chenxiang66@hisilicon.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-28 17:19:42 +00:00
Tyrel Datwyler
c1fed82d6d scsi: ibmvfc: Fix erroneous use of rtas_busy_delay with hcall return code
[ Upstream commit 670106eb4c ]

Commit 0217a272fe ("scsi: ibmvfc: Store return code of H_FREE_SUB_CRQ
during cleanup") wrongly changed the busy loop check to use
rtas_busy_delay() instead of H_BUSY and H_IS_LONG_BUSY(). The busy return
codes for RTAS and hypercalls are not the same.

Fix this issue by restoring the use of H_BUSY and H_IS_LONG_BUSY().

Fixes: 0217a272fe ("scsi: ibmvfc: Store return code of H_FREE_SUB_CRQ  during cleanup")
Signed-off-by: Tyrel Datwyler <tyreld@linux.ibm.com>
Link: https://lore.kernel.org/r/20230921225435.3537728-5-tyreld@linux.ibm.com
Reviewed-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:59:19 +01:00
Linus Torvalds
832328c9f8 ATA fixes for 6.6-final
A single patch to fix a regression introduced by the recent
 suspend/resume fixes. The regression is that ATA disks are not stopped
 on system shutdown, which is not recommended and increases the disks
 SMART counters for unclean power off events. This patch fixes this by
 refining the recent rework of the scsi device manage_xxx flags.
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Merge tag 'ata-6.6-final' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata

Pull ATA fix from Damien Le Moal:
 "A single patch to fix a regression introduced by the recent
  suspend/resume fixes.

  The regression is that ATA disks are not stopped on system shutdown,
  which is not recommended and increases the disks SMART counters for
  unclean power off events.

  This patch fixes this by refining the recent rework of the scsi device
  manage_xxx flags"

* tag 'ata-6.6-final' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata:
  scsi: sd: Introduce manage_shutdown device flag
2023-10-27 13:38:59 -10:00
Damien Le Moal
24eca2dce0 scsi: sd: Introduce manage_shutdown device flag
Commit aa3998dbeb ("ata: libata-scsi: Disable scsi device
manage_system_start_stop") change setting the manage_system_start_stop
flag to false for libata managed disks to enable libata internal
management of disk suspend/resume. However, a side effect of this change
is that on system shutdown, disks are no longer being stopped (set to
standby mode with the heads unloaded). While this is not a critical
issue, this unclean shutdown is not recommended and shows up with
increased smart counters (e.g. the unexpected power loss counter
"Unexpect_Power_Loss_Ct").

Instead of defining a shutdown driver method for all ATA adapter
drivers (not all of them define that operation), this patch resolves
this issue by further refining the sd driver start/stop control of disks
using the new flag manage_shutdown. If this new flag is set to true by
a low level driver, the function sd_shutdown() will issue a
START STOP UNIT command with the start argument set to 0 when a disk
needs to be powered off (suspended) on system power off, that is, when
system_state is equal to SYSTEM_POWER_OFF.

Similarly to the other manage_xxx flags, the new manage_shutdown flag is
exposed through sysfs as a read-write device attribute.

To avoid any confusion between manage_shutdown and
manage_system_start_stop, the comments describing these flags in
include/scsi/scsi.h are also improved.

Fixes: aa3998dbeb ("ata: libata-scsi: Disable scsi device manage_system_start_stop")
Cc: stable@vger.kernel.org
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218038
Link: https://lore.kernel.org/all/cd397c88-bf53-4768-9ab8-9d107df9e613@gmail.com/
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Niklas Cassel <niklas.cassel@wdc.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Acked-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-10-27 10:00:19 +09:00
Linus Torvalds
75e167c2f6 SCSI fixes on 20231020
Two small fixes, both in drivers.  The mptsas one is really fixing an
 error path issue where it can leave the misc driver loaded even though
 the sas driver fails to initialize.
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "Two small fixes, both in drivers.

  The mptsas one is really fixing an error path issue where it can leave
  the misc driver loaded even though the sas driver fails to initialize"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: qla2xxx: Fix double free of dsd_list during driver load
  scsi: mpt3sas: Fix in error path
2023-10-20 13:24:50 -07:00
Quinn Tran
097c06394c scsi: qla2xxx: Fix double free of dsd_list during driver load
On driver load, scsi_add_host() can fail. This triggers the free path to
call qla2x00_mem_free() multiple times. This causes NULL pointer access of
ha->base_qpair. Add check before access.

 BUG: unable to handle kernel NULL pointer dereference at 0000000000000030
 IP: [<ffffffffc118f73c>] qla2x00_mem_free+0x51c/0xcb0 [qla2xxx]
 PGD 8000001fcfe4a067 PUD 1fc8f0a067 PMD 0
 Oops: 0000 [#1] SMP
 RIP: 0010:[<ffffffffc118f73c>]  [<ffffffffc118f73c>] qla2x00_mem_free+0x51c/0xcb0 [qla2xxx]
 RSP: 0018:ffff8ace97a93a30  EFLAGS: 00010246
 RAX: 0000000000000000 RBX: ffff8ace8efd0000 RCX: 000000000000488f
 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
 RBP: ffff8ace97a93a60 R08: 000000000001f040 R09: ffffffff8678209b
 R10: ffff8acf7d6df040 R11: ffffc591c0fcc980 R12: ffffffff87034800
 R13: ffff8acf0e3cc740 R14: ffff8ace8efd0000 R15: 00000000fffffff4
 FS:  00007f4cf5449740(0000) GS:ffff8acf7d6c0000(0000) knlGS:0000000000000000
 CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
 CR2: 0000000000000030 CR3: 0000001fc2f6c000 CR4: 00000000007607e0
 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
 Call Trace:
  [<ffffffff86781f18>] ? kobject_put+0x28/0x60
  [<ffffffffc119a59c>] qla2x00_probe_one+0x19fc/0x3040 [qla2xxx]

Fixes: efeda3bf91 ("scsi: qla2xxx: Move resource to allow code reuse")
Signed-off-by: Quinn Tran <qutran@marvell.com>
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Link: https://lore.kernel.org/r/20231016101749.5059-1-njavali@marvell.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-10-16 21:07:05 -04:00
Tomas Henzl
e40c04ade0 scsi: mpt3sas: Fix in error path
The driver should be deregistered as misc driver after PCI registration
failure.

Signed-off-by: Tomas Henzl <thenzl@redhat.com>
Link: https://lore.kernel.org/r/20231015114529.10725-1-thenzl@redhat.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-10-16 21:04:54 -04:00
Damien Le Moal
626b13f015 scsi: Do not rescan devices with a suspended queue
Commit ff48b37802 ("scsi: Do not attempt to rescan suspended devices")
modified scsi_rescan_device() to avoid attempting rescanning a suspended
device. However, the modification added a check to verify that a SCSI
device is in the running state without checking if the device request
queue (in the case of block device) is also running, thus allowing the
exectuion of internal requests. Without checking the device request
queue, commit ff48b37802 fix is incomplete and deadlocks on resume can
still happen. Use blk_queue_pm_only() to check if the device request
queue allows executing commands in addition to checking the SCSI device
state.

Reported-by: Petr Tesarik <petr@tesarici.cz>
Fixes: ff48b37802 ("scsi: Do not attempt to rescan suspended devices")
Cc: stable@vger.kernel.org
Tested-by: Petr Tesarik <petr@tesarici.cz>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
2023-10-10 14:42:22 +09:00
Linus Torvalds
5e62ed3b1c SCSI fixes on 20231003
Three fixes, all in drivers.  The fnic one is the most extensive
 because the little used user initiated device reset path never tagged
 the command and adding a tag is rather involved.  The other two fixes
 are smaller and more obvious.
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "Three fixes, all in drivers.

  The fnic one is the most extensive because the little used user
  initiated device reset path never tagged the command and adding a tag
  is rather involved. The other two fixes are smaller and more obvious"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: zfcp: Fix a double put in zfcp_port_enqueue()
  scsi: fnic: Fix sg_reset success path
  scsi: target: core: Fix deadlock due to recursive locking
2023-10-03 10:15:10 -07:00
Linus Torvalds
95289e49f0 ATA fixes for 6.6-rc4
A larger than usual set of fixes for 6.6-rc4 due to the unexpected
 number of fixes needed to address ATA disks suspend/resume issues.
 In more details:
 
  - Add missing additionalProperties on child nodes to the pata-common DT
    bindings (Rob).
 
  - Fix handling of the REPORT SUPPORTED OPERATION CODES command to
    ignore reserved bits (Niklas).
 
  - Increase port multiplier soft reset timeout to accomodate slow
    devices and avoid issues on wakeup (Matthias).
 
  - A couple of minor code fixes to avoid compilation warnings in
    libata-core and libata-eh (me).
 
  - Many patches from me to address suspend/resume issues, and in
    particular a potential deadlock on resume due to the SCSI disk driver
    resume operation not being synchronized with libata EH port resume
    handling.  This is addressed by changing the scsi disk driver disk
    start/stop control to allow libata to execute disk suspend (spin
    down) and resume (spin up) on its own during system suspend/resume.
    Runtime suspend/resume control remains with the SCSI disk driver.
    Other fixes include:
     - Fix libata power management request issuing to avoid races.
     - Establish a link between ATA ports and SCSI devices to order PM
       operations.
     - Fix device removal to avoid issues with driver rmmod removal.
     - Fix synchronization of libata device rescan and SCSI disk resume
       operation.
     - Remove libsas PM operations as suspend/resume is handled directly
       by the sas controller resume.
     - Fix the SCSI disk driver to not issue commands to suspended disks,
       thus avoiding potential system lock-up on resume.
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Merge tag 'ata-6.6-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata

Pull ATA fixes from Damien Le Moal:
 "A larger than usual set of fixes for 6.6-rc4 due to the unexpected
  number of fixes needed to address ATA disks suspend/resume issues.

  In more detail:

   - Add missing additionalProperties on child nodes to the pata-common
     DT bindings (Rob)

   - Fix handling of the REPORT SUPPORTED OPERATION CODES command to
     ignore reserved bits (Niklas)

   - Increase port multiplier soft reset timeout to accomodate slow
     devices and avoid issues on wakeup (Matthias)

   - A couple of minor code fixes to avoid compilation warnings in
     libata-core and libata-eh (me)

   - Many patches from me to address suspend/resume issues, and in
     particular a potential deadlock on resume due to the SCSI disk
     driver resume operation not being synchronized with libata EH port
     resume handling.

     This is addressed by changing the scsi disk driver disk start/stop
     control to allow libata to execute disk suspend (spin down) and
     resume (spin up) on its own during system suspend/resume. Runtime
     suspend/resume control remains with the SCSI disk driver.

     Other fixes include:
      - Fix libata power management request issuing to avoid races
      - Establish a link between ATA ports and SCSI devices to order PM
        operations
      - Fix device removal to avoid issues with driver rmmod removal
      - Fix synchronization of libata device rescan and SCSI disk resume
        operation
      - Remove libsas PM operations as suspend/resume is handled
        directly by the sas controller resume
      - Fix the SCSI disk driver to not issue commands to suspended
        disks, thus avoiding potential system lock-up on resume"

* tag 'ata-6.6-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata:
  ata: libata-eh: Fix compilation warning in ata_eh_link_report()
  ata: libata-core: Fix compilation warning in ata_dev_config_ncq()
  scsi: sd: Do not issue commands to suspended disks on shutdown
  ata: libata-core: Do not register PM operations for SAS ports
  ata: libata-scsi: Fix delayed scsi_rescan_device() execution
  scsi: Do not attempt to rescan suspended devices
  ata: libata-scsi: Disable scsi device manage_system_start_stop
  scsi: sd: Differentiate system and runtime start/stop management
  ata: libata-scsi: link ata port and scsi device
  ata: libata-core: Fix port and device removal
  ata: libata-core: Fix ata_port_request_pm() locking
  ata: libata-sata: increase PMP SRST timeout to 10s
  ata: libata-scsi: ignore reserved bits for REPORT SUPPORTED OPERATION CODES
  dt-bindings: ata: pata-common: Add missing additionalProperties on child nodes
2023-09-29 13:38:34 -07:00
Damien Le Moal
99398d2070 scsi: sd: Do not issue commands to suspended disks on shutdown
If an error occurs when resuming a host adapter before the devices
attached to the adapter are resumed, the adapter low level driver may
remove the scsi host, resulting in a call to sd_remove() for the
disks of the host. This in turn results in a call to sd_shutdown() which
will issue a synchronize cache command and a start stop unit command to
spindown the disk. sd_shutdown() issues the commands only if the device
is not already runtime suspended but does not check the power state for
system-wide suspend/resume. That is, the commands may be issued with the
device in a suspended state, which causes PM resume to hang, forcing a
reset of the machine to recover.

Fix this by tracking the suspended state of a disk by introducing the
suspended boolean field in the scsi_disk structure. This flag is set to
true when the disk is suspended is sd_suspend_common() and resumed with
sd_resume(). When suspended is true, sd_shutdown() is not executed from
sd_remove().

Cc: stable@vger.kernel.org
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-09-28 21:23:18 +09:00
Damien Le Moal
ff48b37802 scsi: Do not attempt to rescan suspended devices
scsi_rescan_device() takes a scsi device lock before executing a device
handler and device driver rescan methods. Waiting for the completion of
any command issued to the device by these methods will thus be done with
the device lock held. As a result, there is a risk of deadlocking within
the power management code if scsi_rescan_device() is called to handle a
device resume with the associated scsi device not yet resumed.

Avoid such situation by checking that the target scsi device is in the
running state, that is, fully capable of executing commands, before
proceeding with the rescan and bailout returning -EWOULDBLOCK otherwise.
With this error return, the caller can retry rescaning the device after
a delay.

The state check is done with the device lock held and is thus safe
against incoming suspend power management operations.

Fixes: 6aa0365a3c ("ata: libata-scsi: Avoid deadlock on rescan after device resume")
Cc: stable@vger.kernel.org
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Niklas Cassel <niklas.cassel@wdc.com>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
2023-09-28 21:23:07 +09:00
Damien Le Moal
3cc2ffe5c1 scsi: sd: Differentiate system and runtime start/stop management
The underlying device and driver of a SCSI disk may have different
system and runtime power mode control requirements. This is because
runtime power management affects only the SCSI disk, while system level
power management affects all devices, including the controller for the
SCSI disk.

For instance, issuing a START STOP UNIT command when a SCSI disk is
runtime suspended and resumed is fine: the command is translated to a
STANDBY IMMEDIATE command to spin down the ATA disk and to a VERIFY
command to wake it up. The SCSI disk runtime operations have no effect
on the ata port device used to connect the ATA disk. However, for
system suspend/resume operations, the ATA port used to connect the
device will also be suspended and resumed, with the resume operation
requiring re-validating the device link and the device itself. In this
case, issuing a VERIFY command to spinup the disk must be done before
starting to revalidate the device, when the ata port is being resumed.
In such case, we must not allow the SCSI disk driver to issue START STOP
UNIT commands.

Allow a low level driver to refine the SCSI disk start/stop management
by differentiating system and runtime cases with two new SCSI device
flags: manage_system_start_stop and manage_runtime_start_stop. These new
flags replace the current manage_start_stop flag. Drivers setting the
manage_start_stop are modifed to set both new flags, thus preserving the
existing start/stop management behavior. For backward compatibility, the
old manage_start_stop sysfs device attribute is kept as a read-only
attribute showing a value of 1 for devices enabling both new flags and 0
otherwise.

Fixes: 0a85890559 ("ata,scsi: do not issue START STOP UNIT on resume")
Cc: stable@vger.kernel.org
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-09-28 21:23:00 +09:00
Linus Torvalds
633b47cb00 SCSI fixes on 20230927
Single fix for libata: older devices don't support command duration
 limits (CDL) and some don't support report opcodes, meaning there's no
 way to tell if they support the command or not. Reduce the problems of
 incorrectly using CDL commands on older devices by checking SCSI spec
 compliance at SPC-5 (the spec which introduced the command) before
 turning on CDL.
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "A single fix for libata: older devices don't support command duration
  limits (CDL) and some don't support report opcodes, meaning there's no
  way to tell if they support the command or not.

  Reduce the problems of incorrectly using CDL commands on older devices
  by checking SCSI spec compliance at SPC-5 (the spec which introduced
  the command) before turning on CDL"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: core: ata: Do no try to probe for CDL on old drives
2023-09-27 09:58:02 -07:00
Karan Tilak Kumar
514f0c400b scsi: fnic: Fix sg_reset success path
sg_reset performs a target or LUN reset. Since the command is issued by the
user, it does not come into the driver with a tag or a queue id. Fix the
fnic driver to create an io_req and use a SCSI command tag.  Fix the ITMF
path to special case the sg_reset response.

Reviewed-by: Sesidhar Baddela <sebaddel@cisco.com>
Reviewed-by: Arulprabhu Ponnusamy <arulponn@cisco.com>
Tested-by: Karan Tilak Kumar <kartilak@cisco.com>
Signed-off-by: Karan Tilak Kumar <kartilak@cisco.com>
Link: https://lore.kernel.org/r/20230919182436.6895-1-kartilak@cisco.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-09-27 11:03:59 -04:00
Damien Le Moal
2132df16f5 scsi: core: ata: Do no try to probe for CDL on old drives
Some old drives (e.g. an Ultra320 SCSI disk as reported by John) do not
seem to execute MAINTENANCE_IN / MI_REPORT_SUPPORTED_OPERATION_CODES
commands correctly and hang when a non-zero service action is specified
(one command format with service action case in scsi_report_opcode()).

Currently, CDL probing with scsi_cdl_check_cmd() is the only caller using a
non zero service action for scsi_report_opcode(). To avoid issues with
these old drives, do not attempt CDL probe if the device reports support
for an SPC version lower than 5 (CDL was introduced in SPC-5). To keep
things working with ATA devices which probe for the CDL T2A and T2B pages
introduced with SPC-6, modify ata_scsiop_inq_std() to claim SPC-6 version
compatibility for ATA drives supporting CDL.

SPC-6 standard version number is defined as Dh (= 13) in SPC-6 r09. Fix
scsi_probe_lun() to correctly capture this value by changing the bit mask
for the second byte of the INQUIRY response from 0x7 to 0xf.
include/scsi/scsi.h is modified to add the definition SCSI_SPC_6 with the
value 14 (Dh + 1). The missing definitions for the SCSI_SPC_4 and
SCSI_SPC_5 versions are also added.

Reported-by: John David Anglin <dave.anglin@bell.net>
Fixes: 624885209f ("scsi: core: Detect support for command duration limits")
Cc: stable@vger.kernel.org
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Link: https://lore.kernel.org/r/20230915022034.678121-1-dlemoal@kernel.org
Tested-by: David Gow <david@davidgow.net>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Niklas Cassel <niklas.cassel@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-09-21 21:07:23 -04:00
Linus Torvalds
27bbf45eae Networking fixes for 6.6-rc2, including fixes from netfilter and bpf
Current release - regressions:
 
  - bpf: adjust size_index according to the value of KMALLOC_MIN_SIZE
 
  - netfilter: fix entries val in rule reset audit log
 
  - eth: stmmac: fix incorrect rxq|txq_stats reference
 
 Previous releases - regressions:
 
  - ipv4: fix null-deref in ipv4_link_failure
 
  - netfilter:
    - fix several GC related issues
    - fix race between IPSET_CMD_CREATE and IPSET_CMD_SWAP
 
  - eth: team: fix null-ptr-deref when team device type is changed
 
  - eth: i40e: fix VF VLAN offloading when port VLAN is configured
 
  - eth: ionic: fix 16bit math issue when PAGE_SIZE >= 64KB
 
 Previous releases - always broken:
 
  - core: fix ETH_P_1588 flow dissector
 
  - mptcp: fix several connection hang-up conditions
 
  - bpf:
    - avoid deadlock when using queue and stack maps from NMI
    - add override check to kprobe multi link attach
 
  - hsr: properly parse HSRv1 supervisor frames.
 
  - eth: igc: fix infinite initialization loop with early XDP redirect
 
  - eth: octeon_ep: fix tx dma unmap len values in SG
 
  - eth: hns3: fix GRE checksum offload issue
 
 Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-6.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Paolo Abeni:
 "Including fixes from netfilter and bpf.

  Current release - regressions:

   - bpf: adjust size_index according to the value of KMALLOC_MIN_SIZE

   - netfilter: fix entries val in rule reset audit log

   - eth: stmmac: fix incorrect rxq|txq_stats reference

  Previous releases - regressions:

   - ipv4: fix null-deref in ipv4_link_failure

   - netfilter:
      - fix several GC related issues
      - fix race between IPSET_CMD_CREATE and IPSET_CMD_SWAP

   - eth: team: fix null-ptr-deref when team device type is changed

   - eth: i40e: fix VF VLAN offloading when port VLAN is configured

   - eth: ionic: fix 16bit math issue when PAGE_SIZE >= 64KB

  Previous releases - always broken:

   - core: fix ETH_P_1588 flow dissector

   - mptcp: fix several connection hang-up conditions

   - bpf:
      - avoid deadlock when using queue and stack maps from NMI
      - add override check to kprobe multi link attach

   - hsr: properly parse HSRv1 supervisor frames.

   - eth: igc: fix infinite initialization loop with early XDP redirect

   - eth: octeon_ep: fix tx dma unmap len values in SG

   - eth: hns3: fix GRE checksum offload issue"

* tag 'net-6.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (87 commits)
  sfc: handle error pointers returned by rhashtable_lookup_get_insert_fast()
  igc: Expose tx-usecs coalesce setting to user
  octeontx2-pf: Do xdp_do_flush() after redirects.
  bnxt_en: Flush XDP for bnxt_poll_nitroa0()'s NAPI
  net: ena: Flush XDP packets on error.
  net/handshake: Fix memory leak in __sock_create() and sock_alloc_file()
  net: hinic: Fix warning-hinic_set_vlan_fliter() warn: variable dereferenced before check 'hwdev'
  netfilter: ipset: Fix race between IPSET_CMD_CREATE and IPSET_CMD_SWAP
  netfilter: nf_tables: fix memleak when more than 255 elements expired
  netfilter: nf_tables: disable toggling dormant table state more than once
  vxlan: Add missing entries to vxlan_get_size()
  net: rds: Fix possible NULL-pointer dereference
  team: fix null-ptr-deref when team device type is changed
  net: bridge: use DEV_STATS_INC()
  net: hns3: add 5ms delay before clear firmware reset irq source
  net: hns3: fix fail to delete tc flower rules during reset issue
  net: hns3: only enable unicast promisc when mac table full
  net: hns3: fix GRE checksum offload issue
  net: hns3: add cmdq check for vf periodic service task
  net: stmmac: fix incorrect rxq|txq_stats reference
  ...
2023-09-21 11:28:16 -07:00
Eric Dumazet
f4f82c52a0 scsi: iscsi_tcp: restrict to TCP sockets
Nothing prevents iscsi_sw_tcp_conn_bind() to receive file descriptor
pointing to non TCP socket (af_unix for example).

Return -EINVAL if this is attempted, instead of crashing the kernel.

Fixes: 7ba2471389 ("[SCSI] open-iscsi/linux-iscsi-5 Initiator: Initiator code")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Lee Duncan <lduncan@suse.com>
Cc: Chris Leech <cleech@redhat.com>
Cc: Mike Christie <michael.christie@oracle.com>
Cc: "James E.J. Bottomley" <jejb@linux.ibm.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: open-iscsi@googlegroups.com
Cc: linux-scsi@vger.kernel.org
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-09-17 17:46:13 +01:00
Justin Tee
dae40be7a1 scsi: lpfc: Prevent use-after-free during rmmod with mapped NVMe rports
During rmmod, when dev_loss_tmo callback is called, an ndlp kref count is
decremented twice.  Once for SCSI transport registration and second to
remove the initial node allocation kref.  If there is also an NVMe
transport registration, another reference count decrement is expected in
lpfc_nvme_unregister_port().

Race conditions between the NVMe transport remoteport_delete and
dev_loss_tmo callbacks sometimes results in premature ndlp object release
resulting in use-after-free issues.

Fix by not dropping the ndlp object in dev_loss_tmo callback with an
outstanding NVMe transport registration.  Inversely, mark the final
NLP_DROPPED flag in lpfc_nvme_unregister_port when rmmod flag is set.

Signed-off-by: Justin Tee <justin.tee@broadcom.com>
Link: https://lore.kernel.org/r/20230908211923.37603-1-justintee8345@gmail.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-09-13 20:51:16 -04:00
Justin Tee
9c3034968e scsi: lpfc: Early return after marking final NLP_DROPPED flag in dev_loss_tmo
When a dev_loss_tmo event occurs, an ndlp lock is taken before checking
nlp_flag for NLP_DROPPED.  There is an attempt to restore the ndlp lock
when exiting the if statement, but the nlp_put kref could be the final
decrement causing a use-after-free memory access on a released ndlp object.

Instead of trying to reacquire the ndlp lock after checking nlp_flag, just
return after calling nlp_put.

Signed-off-by: Justin Tee <justin.tee@broadcom.com>
Link: https://lore.kernel.org/r/20230908211852.37576-1-justintee8345@gmail.com
Reviewed-by: "Ewan D. Milne" <emilne@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-09-13 20:49:34 -04:00
Jinjie Ruan
7dcc683db3 scsi: lpfc: Fix the NULL vs IS_ERR() bug for debugfs_create_file()
Since debugfs_create_file() returns ERR_PTR and never NULL, use IS_ERR() to
check the return value.

Fixes: 2fcbc569b9 ("scsi: lpfc: Make debugfs ktime stats generic for NVME and SCSI")
Fixes: 4c47efc140 ("scsi: lpfc: Move SCSI and NVME Stats to hardware queue structures")
Fixes: 6a828b0f61 ("scsi: lpfc: Support non-uniform allocation of MSIX vectors to hardware queues")
Fixes: 95bfc6d8ad ("scsi: lpfc: Make FW logging dynamically configurable")
Fixes: 9f77870870 ("scsi: lpfc: Add debugfs support for cm framework buffers")
Fixes: c490850a09 ("scsi: lpfc: Adapt partitioned XRI lists to efficient sharing")
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Link: https://lore.kernel.org/r/20230906030809.2847970-1-ruanjinjie@huawei.com
Reviewed-by: Justin Tee <justin.tee@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-09-13 20:48:36 -04:00
Damien Le Moal
c91774818b scsi: pm8001: Setup IRQs on resume
The function pm8001_pci_resume() only calls pm8001_request_irq() without
calling pm8001_setup_irq(). This causes the IRQ allocation to fail, which
leads all drives being removed from the system.

Fix this issue by integrating the code for pm8001_setup_irq() directly
inside pm8001_request_irq() so that MSI-X setup is performed both during
normal initialization and resume operations.

Fixes: dbf9bfe615 ("[SCSI] pm8001: add SAS/SATA HBA driver")
Cc: stable@vger.kernel.org
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Link: https://lore.kernel.org/r/20230911232745.325149-2-dlemoal@kernel.org
Acked-by: Jack Wang <jinpu.wang@ionos.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-09-13 20:08:40 -04:00
Michal Grzedzicki
c13e733174 scsi: pm80xx: Avoid leaking tags when processing OPC_INB_SET_CONTROLLER_CONFIG command
Tags allocated for OPC_INB_SET_CONTROLLER_CONFIG command need to be freed
when we receive the response.

Signed-off-by: Michal Grzedzicki <mge@meta.com>
Link: https://lore.kernel.org/r/20230911170340.699533-2-mge@meta.com
Acked-by: Jack Wang <jinpu.wang@ionos.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-09-13 20:04:23 -04:00
Michal Grzedzicki
71996bb835 scsi: pm80xx: Use phy-specific SAS address when sending PHY_START command
Some cards have more than one SAS address. Using an incorrect address
causes communication issues with some devices like expanders.

Closes: https://lore.kernel.org/linux-kernel/A57AEA84-5CA0-403E-8053-106033C73C70@fb.com/
Signed-off-by: Michal Grzedzicki <mge@meta.com>
Link: https://lore.kernel.org/r/20230913155611.3183612-1-mge@meta.com
Acked-by: Jack Wang <jinpu.wang@ionos.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-09-13 20:04:22 -04:00
Martin K. Petersen
4f6cee6045 Merge branch '6.6/scsi-staging' into 6.6/scsi-fixes
Pull in staged fixes for 6.6.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-09-13 19:50:47 -04:00
Linus Torvalds
2a5a4326e5 SCSI misc on 20230909
Mostly small stragglers that missed the initial merge.  Driver updates
 are qla2xxx and smartpqi (mp3sas has a high diffstat due to the
 volatile qualifier removal, fnic due to unused function removal and
 sd.c has a lot of code shuffling to remove forward declarations).
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull more SCSI updates from James Bottomley:
 "Mostly small stragglers that missed the initial merge.

  Driver updates are qla2xxx and smartpqi (mp3sas has a high diffstat
  due to the volatile qualifier removal, fnic due to unused function
  removal and sd.c has a lot of code shuffling to remove forward
  declarations)"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (38 commits)
  scsi: ufs: core: No need to update UPIU.header.flags and lun in advanced RPMB handler
  scsi: ufs: core: Add advanced RPMB support where UFSHCI 4.0 does not support EHS length in UTRD
  scsi: mpt3sas: Remove volatile qualifier
  scsi: mpt3sas: Perform additional retries if doorbell read returns 0
  scsi: libsas: Simplify sas_queue_reset() and remove unused code
  scsi: ufs: Fix the build for the old ARM OABI
  scsi: qla2xxx: Fix unused variable warning in qla2xxx_process_purls_pkt()
  scsi: fnic: Remove unused functions fnic_scsi_host_start/end_tag()
  scsi: qla2xxx: Fix spelling mistake "tranport" -> "transport"
  scsi: fnic: Replace sgreset tag with max_tag_id
  scsi: qla2xxx: Remove unused variables in qla24xx_build_scsi_type_6_iocbs()
  scsi: qla2xxx: Fix nvme_fc_rcv_ls_req() undefined error
  scsi: smartpqi: Change driver version to 2.1.24-046
  scsi: smartpqi: Enhance error messages
  scsi: smartpqi: Enhance controller offline notification
  scsi: smartpqi: Enhance shutdown notification
  scsi: smartpqi: Simplify lun_number assignment
  scsi: smartpqi: Rename pciinfo to pci_info
  scsi: smartpqi: Rename MACRO to clarify purpose
  scsi: smartpqi: Add abort handler
  ...
2023-09-09 12:01:33 -07:00
Linus Torvalds
4b3d6e0c6c ata changes for 6.6
- Fix OF include file for ata platform drivers (Rob).
 
  - Simplify various ahci, sata and pata platform drivers using the
    function devm_platform_ioremap_resource() (Yangtao).
 
  - Cleanup libata time related argument types (e.g. timeouts values)
    (Sergey).
 
  - Cleanup libata code around error handling as all ata drivers now
    define a error_handler operation (Hannes and Niklas).
 
  - Remove functions intended for libsas that are in fact unused
    (Niklas).
 
  - Change the remove device callback of platform drivers to a null
    function (Uwe).
 
  - Simplify the pata_imx driver using devm_clk_get_enabled() (Li).
 
  - Remove old and uinused remnants of the ide code in arm, parisc,
    powerpc, sparc and m68k architectures and associated drivers
    (pata_buddha, pata_falcon and pata_gayle) (Geert).
 
  - Add missing MODULE_DESCRIPTION() in the sata_gemini and pata_ftide010
    drivers (me).
 
  - Several fixes for the pata_ep93xx and pata_falcon drivers (Nikita,
    Michael).
 
  - Add Elkhart Lake AHCI controller support to the ahci driver (Werner).
 
  - Disable NCQ trim on Micron 1100 drives (Pawel).
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Merge tag 'ata-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata

Pull ata updates from Damien Le Moal:

 - Fix OF include file for ata platform drivers (Rob)

 - Simplify various ahci, sata and pata platform drivers using the
   function devm_platform_ioremap_resource() (Yangtao)

 - Cleanup libata time related argument types (e.g. timeouts values)
   (Sergey)

 - Cleanup libata code around error handling as all ata drivers now
   define a error_handler operation (Hannes and Niklas)

 - Remove functions intended for libsas that are in fact unused (Niklas)

 - Change the remove device callback of platform drivers to a null
   function (Uwe)

 - Simplify the pata_imx driver using devm_clk_get_enabled() (Li)

 - Remove old and uinused remnants of the ide code in arm, parisc,
   powerpc, sparc and m68k architectures and associated drivers
   (pata_buddha, pata_falcon and pata_gayle) (Geert)

 - Add missing MODULE_DESCRIPTION() in the sata_gemini and pata_ftide010
   drivers (me)

 - Several fixes for the pata_ep93xx and pata_falcon drivers (Nikita,
   Michael)

 - Add Elkhart Lake AHCI controller support to the ahci driver (Werner)

 - Disable NCQ trim on Micron 1100 drives (Pawel)

* tag 'ata-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata: (60 commits)
  ata: libata-core: Disable NCQ_TRIM on Micron 1100 drives
  ata: ahci: Add Elkhart Lake AHCI controller
  ata: pata_falcon: add data_swab option to byte-swap disk data
  ata: pata_falcon: fix IO base selection for Q40
  ata: pata_ep93xx: use soc_device_match for UDMA modes
  ata: pata_ep93xx: fix error return code in probe
  ata: sata_gemini: Add missing MODULE_DESCRIPTION
  ata: pata_ftide010: Add missing MODULE_DESCRIPTION
  m68k: Remove <asm/ide.h>
  ata: pata_gayle: Remove #include <asm/ide.h>
  ata: pata_falcon: Remove #include <asm/ide.h>
  ata: pata_buddha: Remove #include <asm/ide.h>
  asm-generic: Remove ide_iops.h
  sparc: Remove <asm/ide.h>
  powerpc: Remove <asm/ide.h>
  parisc: Remove <asm/ide.h>
  ARM: Remove <asm/ide.h>
  ata: pata_imx: Use helper function devm_clk_get_enabled()
  ata: sata_rcar: Convert to platform remove callback returning void
  ata: sata_mv: Convert to platform remove callback returning void
  ...
2023-09-05 12:37:28 -07:00
Javed Hasan
7df0b26054 scsi: qedf: Add synchronization between I/O completions and abort
Avoid race condition between I/O completion and abort processing by
protecting the cmd_type with the rport lock.

Signed-off-by: Javed Hasan <jhasan@marvell.com>
Signed-off-by: Saurav Kashyap <skashyap@marvell.com>
Link: https://lore.kernel.org/r/20230901060646.27885-1-skashyap@marvell.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-09-05 05:57:49 -04:00
Jinjie Ruan
d0b0822e32 scsi: qla2xxx: Fix NULL vs IS_ERR() bug for debugfs_create_dir()
Since both debugfs_create_dir() and debugfs_create_file() return ERR_PTR
and never NULL, use IS_ERR() instead of checking for NULL.

Fixes: 1e98fb0f92 ("scsi: qla2xxx: Setup debugfs entries for remote ports")
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Link: https://lore.kernel.org/r/20230831140930.3166359-1-ruanjinjie@huawei.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-09-05 05:50:36 -04:00
Nilesh Javali
59f10a05b5 scsi: qla2xxx: Use raw_smp_processor_id() instead of smp_processor_id()
The following call trace was observed:

localhost kernel: nvme nvme0: NVME-FC{0}: controller connect complete
localhost kernel: BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u129:4/75092
localhost kernel: nvme nvme0: NVME-FC{0}: new ctrl: NQN "nqn.1992-08.com.netapp:sn.b42d198afb4d11ecad6d00a098d6abfa:subsystem.PR_Channel2022_RH84_subsystem_291"
localhost kernel: caller is qla_nvme_post_cmd+0x216/0x1380 [qla2xxx]
localhost kernel: CPU: 6 PID: 75092 Comm: kworker/u129:4 Kdump: loaded Tainted: G    B   W  OE    --------- ---  5.14.0-70.22.1.el9_0.x86_64+debug #1
localhost kernel: Hardware name: HPE ProLiant XL420 Gen10/ProLiant XL420 Gen10, BIOS U39 01/13/2022
localhost kernel: Workqueue: nvme-wq nvme_async_event_work [nvme_core]
localhost kernel: Call Trace:
localhost kernel: dump_stack_lvl+0x57/0x7d
localhost kernel: check_preemption_disabled+0xc8/0xd0
localhost kernel: qla_nvme_post_cmd+0x216/0x1380 [qla2xxx]

Use raw_smp_processor_id() instead of smp_processor_id().

Also use queue_work() across the driver instead of queue_work_on() thus
avoiding usage of smp_processor_id() when CONFIG_DEBUG_PREEMPT is enabled.

Cc: stable@vger.kernel.org
Suggested-by: John Garry <john.g.garry@oracle.com>
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Link: https://lore.kernel.org/r/20230831112146.32595-2-njavali@marvell.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-09-05 05:36:08 -04:00
Nilesh Javali
0be7592885 scsi: qla2xxx: Correct endianness for rqstlen and rsplen
rqstlen and rsplen were changed to __le32 to fix sparse warnings:

drivers/scsi/qla2xxx/qla_nvme.c:402:30: warning: incorrect type in assignment (different base types)
drivers/scsi/qla2xxx/qla_nvme.c:402:30:    expected restricted __le32 [usertype] cmd_len
drivers/scsi/qla2xxx/qla_nvme.c:402:30:    got unsigned short [usertype] rsplen
drivers/scsi/qla2xxx/qla_nvme.c:507:30: warning: incorrect type in assignment (different base types)
drivers/scsi/qla2xxx/qla_nvme.c:507:30:    expected restricted __le32 [usertype] cmd_len
drivers/scsi/qla2xxx/qla_nvme.c:507:30:    got unsigned int [usertype] rqstlen
drivers/scsi/qla2xxx/qla_nvme.c:508:30: warning: incorrect type in assignment (different base types)
drivers/scsi/qla2xxx/qla_nvme.c:508:30:    expected restricted __le32 [usertype] rsp_len
drivers/scsi/qla2xxx/qla_nvme.c:508:30:    got unsigned int [usertype] rsplen

Correct the endianness in qla2xxx driver thus avoiding changes in
nvme-fc-driver.h.

Fixes: 875386b988 ("scsi: qla2xxx: Add Unsolicited LS Request and Response Support for NVMe")
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Link: https://lore.kernel.org/r/20230831112146.32595-1-njavali@marvell.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-09-05 05:34:14 -04:00
Alex Henrie
31a0865bf5 scsi: ppa: Fix accidentally reversed conditions for 16-bit and 32-bit EPP
The conditions were correct in the ppa_in() function but not in the
ppa_out() function.

Fixes: 68a4f84a17 ("scsi: ppa: Add a module parameter for the transfer mode")
Signed-off-by: Alex Henrie <alexhenrie24@gmail.com>
Link: https://lore.kernel.org/r/20230831051945.515476-1-alexhenrie24@gmail.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-09-05 05:26:49 -04:00
Junxiao Bi
0b0747d507 scsi: megaraid_sas: Fix deadlock on firmware crashdump
The following processes run into a deadlock. CPU 41 was waiting for CPU 29
to handle a CSD request while holding spinlock "crashdump_lock", but CPU 29
was hung by that spinlock with IRQs disabled.

  PID: 17360    TASK: ffff95c1090c5c40  CPU: 41  COMMAND: "mrdiagd"
  !# 0 [ffffb80edbf37b58] __read_once_size at ffffffff9b871a40 include/linux/compiler.h:185:0
  !# 1 [ffffb80edbf37b58] atomic_read at ffffffff9b871a40 arch/x86/include/asm/atomic.h:27:0
  !# 2 [ffffb80edbf37b58] dump_stack at ffffffff9b871a40 lib/dump_stack.c:54:0
   # 3 [ffffb80edbf37b78] csd_lock_wait_toolong at ffffffff9b131ad5 kernel/smp.c:364:0
   # 4 [ffffb80edbf37b78] __csd_lock_wait at ffffffff9b131ad5 kernel/smp.c:384:0
   # 5 [ffffb80edbf37bf8] csd_lock_wait at ffffffff9b13267a kernel/smp.c:394:0
   # 6 [ffffb80edbf37bf8] smp_call_function_many at ffffffff9b13267a kernel/smp.c:843:0
   # 7 [ffffb80edbf37c50] smp_call_function at ffffffff9b13279d kernel/smp.c:867:0
   # 8 [ffffb80edbf37c50] on_each_cpu at ffffffff9b13279d kernel/smp.c:976:0
   # 9 [ffffb80edbf37c78] flush_tlb_kernel_range at ffffffff9b085c4b arch/x86/mm/tlb.c:742:0
   #10 [ffffb80edbf37cb8] __purge_vmap_area_lazy at ffffffff9b23a1e0 mm/vmalloc.c:701:0
   #11 [ffffb80edbf37ce0] try_purge_vmap_area_lazy at ffffffff9b23a2cc mm/vmalloc.c:722:0
   #12 [ffffb80edbf37ce0] free_vmap_area_noflush at ffffffff9b23a2cc mm/vmalloc.c:754:0
   #13 [ffffb80edbf37cf8] free_unmap_vmap_area at ffffffff9b23bb3b mm/vmalloc.c:764:0
   #14 [ffffb80edbf37cf8] remove_vm_area at ffffffff9b23bb3b mm/vmalloc.c:1509:0
   #15 [ffffb80edbf37d18] __vunmap at ffffffff9b23bb8a mm/vmalloc.c:1537:0
   #16 [ffffb80edbf37d40] vfree at ffffffff9b23bc85 mm/vmalloc.c:1612:0
   #17 [ffffb80edbf37d58] megasas_free_host_crash_buffer [megaraid_sas] at ffffffffc020b7f2 drivers/scsi/megaraid/megaraid_sas_fusion.c:3932:0
   #18 [ffffb80edbf37d80] fw_crash_state_store [megaraid_sas] at ffffffffc01f804d drivers/scsi/megaraid/megaraid_sas_base.c:3291:0
   #19 [ffffb80edbf37dc0] dev_attr_store at ffffffff9b56dd7b drivers/base/core.c:758:0
   #20 [ffffb80edbf37dd0] sysfs_kf_write at ffffffff9b326acf fs/sysfs/file.c:144:0
   #21 [ffffb80edbf37de0] kernfs_fop_write at ffffffff9b325fd4 fs/kernfs/file.c:316:0
   #22 [ffffb80edbf37e20] __vfs_write at ffffffff9b29418a fs/read_write.c:480:0
   #23 [ffffb80edbf37ea8] vfs_write at ffffffff9b294462 fs/read_write.c:544:0
   #24 [ffffb80edbf37ee8] SYSC_write at ffffffff9b2946ec fs/read_write.c:590:0
   #25 [ffffb80edbf37ee8] SyS_write at ffffffff9b2946ec fs/read_write.c:582:0
   #26 [ffffb80edbf37f30] do_syscall_64 at ffffffff9b003ca9 arch/x86/entry/common.c:298:0
   #27 [ffffb80edbf37f58] entry_SYSCALL_64 at ffffffff9ba001b1 arch/x86/entry/entry_64.S:238:0

  PID: 17355    TASK: ffff95c1090c3d80  CPU: 29  COMMAND: "mrdiagd"
  !# 0 [ffffb80f2d3c7d30] __read_once_size at ffffffff9b0f2ab0 include/linux/compiler.h:185:0
  !# 1 [ffffb80f2d3c7d30] native_queued_spin_lock_slowpath at ffffffff9b0f2ab0 kernel/locking/qspinlock.c:368:0
   # 2 [ffffb80f2d3c7d58] pv_queued_spin_lock_slowpath at ffffffff9b0f244b arch/x86/include/asm/paravirt.h:674:0
   # 3 [ffffb80f2d3c7d58] queued_spin_lock_slowpath at ffffffff9b0f244b arch/x86/include/asm/qspinlock.h:53:0
   # 4 [ffffb80f2d3c7d68] queued_spin_lock at ffffffff9b8961a6 include/asm-generic/qspinlock.h:90:0
   # 5 [ffffb80f2d3c7d68] do_raw_spin_lock_flags at ffffffff9b8961a6 include/linux/spinlock.h:173:0
   # 6 [ffffb80f2d3c7d68] __raw_spin_lock_irqsave at ffffffff9b8961a6 include/linux/spinlock_api_smp.h:122:0
   # 7 [ffffb80f2d3c7d68] _raw_spin_lock_irqsave at ffffffff9b8961a6 kernel/locking/spinlock.c:160:0
   # 8 [ffffb80f2d3c7d88] fw_crash_buffer_store [megaraid_sas] at ffffffffc01f8129 drivers/scsi/megaraid/megaraid_sas_base.c:3205:0
   # 9 [ffffb80f2d3c7dc0] dev_attr_store at ffffffff9b56dd7b drivers/base/core.c:758:0
   #10 [ffffb80f2d3c7dd0] sysfs_kf_write at ffffffff9b326acf fs/sysfs/file.c:144:0
   #11 [ffffb80f2d3c7de0] kernfs_fop_write at ffffffff9b325fd4 fs/kernfs/file.c:316:0
   #12 [ffffb80f2d3c7e20] __vfs_write at ffffffff9b29418a fs/read_write.c:480:0
   #13 [ffffb80f2d3c7ea8] vfs_write at ffffffff9b294462 fs/read_write.c:544:0
   #14 [ffffb80f2d3c7ee8] SYSC_write at ffffffff9b2946ec fs/read_write.c:590:0
   #15 [ffffb80f2d3c7ee8] SyS_write at ffffffff9b2946ec fs/read_write.c:582:0
   #16 [ffffb80f2d3c7f30] do_syscall_64 at ffffffff9b003ca9 arch/x86/entry/common.c:298:0
   #17 [ffffb80f2d3c7f58] entry_SYSCALL_64 at ffffffff9ba001b1 arch/x86/entry/entry_64.S:238:0

The lock is used to synchronize different sysfs operations, it doesn't
protect any resource that will be touched by an interrupt. Consequently
it's not required to disable IRQs. Replace the spinlock with a mutex to fix
the deadlock.

Signed-off-by: Junxiao Bi <junxiao.bi@oracle.com>
Link: https://lore.kernel.org/r/20230828221018.19471-1-junxiao.bi@oracle.com
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Cc: stable@vger.kernel.org
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-09-05 05:23:40 -04:00
Linus Torvalds
b89b029377 SCSI misc on 20230902
Updates to the usual drivers (ufs, lpfc, qla2xxx, mpi3mr, libsas) and
 the usual minor updates and bug fixes but no significant core changes.
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI updates from James Bottomley:
 "Updates to the usual drivers (ufs, lpfc, qla2xxx, mpi3mr, libsas) and
  the usual minor updates and bug fixes but no significant core changes"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (116 commits)
  scsi: storvsc: Handle additional SRB status values
  scsi: libsas: Delete sas_ata_task.retry_count
  scsi: libsas: Delete sas_ata_task.stp_affil_pol
  scsi: libsas: Delete sas_ata_task.set_affil_pol
  scsi: libsas: Delete sas_ssp_task.task_prio
  scsi: libsas: Delete sas_ssp_task.enable_first_burst
  scsi: libsas: Delete sas_ssp_task.retry_count
  scsi: libsas: Delete struct scsi_core
  scsi: libsas: Delete enum sas_phy_type
  scsi: libsas: Delete enum sas_class
  scsi: libsas: Delete sas_ha_struct.lldd_module
  scsi: target: Fix write perf due to unneeded throttling
  scsi: lpfc: Do not abuse UUID APIs and LPFC_COMPRESS_VMID_SIZE
  scsi: pm8001: Remove unused declarations
  scsi: fcoe: Fix potential deadlock on &fip->ctlr_lock
  scsi: elx: sli4: Remove code duplication
  scsi: bfa: Replace one-element array with flexible-array member in struct fc_rscn_pl_s
  scsi: qla2xxx: Remove unused declarations
  scsi: pmcraid: Use pci_dev_id() to simplify the code
  scsi: pm80xx: Set RETFIS when requested by libsas
  ...
2023-09-02 12:02:41 -07:00
James Bottomley
e03843a0f0 Merge branch 'fixes' into misc 2023-09-02 08:25:19 +01:00
Ranjan Kumar
0854065092 scsi: mpt3sas: Remove volatile qualifier
Remove reduntant volatile qualifier.

Signed-off-by: Ranjan Kumar <ranjan.kumar@broadcom.com>
Link: https://lore.kernel.org/r/20230829090020.5417-3-ranjan.kumar@broadcom.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-08-30 21:39:06 -04:00
Ranjan Kumar
4ca10f3e31 scsi: mpt3sas: Perform additional retries if doorbell read returns 0
The driver retries certain register reads 3 times if the returned value is
0. This was done because the controller could return 0 for certain
registers if other registers were being accessed concurrently by the BMC.

In certain systems with increased BMC interactions, the register values
returned can be 0 for longer than 3 retries. Change the retry count from 3
to 30 for the affected registers to prevent problems with out-of-band
management.

Fixes: b899202901 ("scsi: mpt3sas: Add separate function for aero doorbell reads")
Cc: stable@vger.kernel.org
Signed-off-by: Ranjan Kumar <ranjan.kumar@broadcom.com>
Link: https://lore.kernel.org/r/20230829090020.5417-2-ranjan.kumar@broadcom.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-08-30 21:39:06 -04:00
Wenchao Hao
be946e31bc scsi: libsas: Simplify sas_queue_reset() and remove unused code
sas_queue_reset() is always called with param "wait" set to 0, so remove it
from this function's parameter list. Also remove unused function
sas_wait_eh().

Signed-off-by: Wenchao Hao <haowenchao2@huawei.com>
Link: https://lore.kernel.org/r/20230729102451.2452826-1-haowenchao2@huawei.com
Reviewed-by: Jason Yan <yanaijie@huawei.com>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-08-30 21:24:50 -04:00
Nathan Chancellor
d4781807f0 scsi: qla2xxx: Fix unused variable warning in qla2xxx_process_purls_pkt()
When CONFIG_NVME_FC is not set, fcport is unused:

  drivers/scsi/qla2xxx/qla_nvme.c: In function 'qla2xxx_process_purls_pkt':
  drivers/scsi/qla2xxx/qla_nvme.c:1183:20: warning: unused variable 'fcport' [-Wunused-variable]
   1183 |         fc_port_t *fcport = uctx->fcport;
        |                    ^~~~~~

While this preprocessor usage could be converted to a normal if
statement to allow the compiler to always see fcport as used, it is
equally easy to just eliminate the fcport variable and use uctx->fcport
directly.

Fixes: 27177862de ("scsi: qla2xxx: Fix nvme_fc_rcv_ls_req() undefined error")
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Closes: https://lore.kernel.org/linux-next/20230828131304.269a2a40@canb.auug.org.au/
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202308290833.sKkoSSeO-lkp@intel.com/
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Link: https://lore.kernel.org/r/20230829-qla_nvme-fix-unused-fcport-v1-1-51c7560ecaee@kernel.org
Acked-by: Nilesh Javali <njavali@marvell.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-08-30 21:13:40 -04:00
Yang Li
e7cf3a35b3 scsi: fnic: Remove unused functions fnic_scsi_host_start/end_tag()
The functions fnic_scsi_host_start_tag() and fnic_scsi_host_end_tag() are
not used anywhere, so remove them.

silence the warnings:
drivers/scsi/fnic/fnic_scsi.c:2175:1: warning: unused function 'fnic_scsi_host_start_tag'
drivers/scsi/fnic/fnic_scsi.c:2196:1: warning: unused function 'fnic_scsi_host_end_tag'

Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Link: https://lore.kernel.org/r/20230829010222.33393-1-yang.lee@linux.alibaba.com
Acked-by: Karan Tilak Kumar <kartilak@cisco.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-08-30 21:11:40 -04:00
Colin Ian King
7a5dee9b72 scsi: qla2xxx: Fix spelling mistake "tranport" -> "transport"
There is a spelling mistake in a ql_dbg message. Fix it.

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Link: https://lore.kernel.org/r/20230828213101.758609-1-colin.i.king@gmail.com
Acked-by: Nilesh Javali <njavali@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-08-30 21:08:16 -04:00
Martin K. Petersen
58330d6a0b Merge branch '6.5/scsi-fixes' into 6.6/scsi-staging
Pull in the fixes tree for a commit that missed 6.5. Also resolve a
trivial merge conflict in fnic.

* 6.5/scsi-fixes: (36 commits)
  scsi: storvsc: Handle additional SRB status values
  scsi: snic: Fix double free in snic_tgt_create()
  scsi: core: raid_class: Remove raid_component_add()
  scsi: ufs: ufs-qcom: Clear qunipro_g4_sel for HW major version > 5
  scsi: ufs: mcq: Fix the search/wrap around logic
  scsi: qedf: Fix firmware halt over suspend and resume
  scsi: qedi: Fix firmware halt over suspend and resume
  scsi: qedi: Fix potential deadlock on &qedi_percpu->p_work_lock
  scsi: lpfc: Remove reftag check in DIF paths
  scsi: ufs: renesas: Fix private allocation
  scsi: snic: Fix possible memory leak if device_add() fails
  scsi: core: Fix possible memory leak if device_add() fails
  scsi: core: Fix legacy /proc parsing buffer overflow
  scsi: 53c700: Check that command slot is not NULL
  scsi: fnic: Replace return codes in fnic_clean_pending_aborts()
  scsi: storvsc: Fix handling of virtual Fibre Channel timeouts
  scsi: pm80xx: Fix error return code in pm8001_pci_probe()
  scsi: zfcp: Defer fc_rport blocking until after ADISC response
  scsi: storvsc: Limit max_sectors for virtual Fibre Channel devices
  scsi: sg: Fix checking return value of blk_get_queue()
  ...

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-08-30 20:56:24 -04:00
Linus Torvalds
3d3dfeb3ae for-6.6/block-2023-08-28
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Merge tag 'for-6.6/block-2023-08-28' of git://git.kernel.dk/linux

Pull block updates from Jens Axboe:
 "Pretty quiet round for this release. This contains:

   - Add support for zoned storage to ublk (Andreas, Ming)

   - Series improving performance for drivers that mark themselves as
     needing a blocking context for issue (Bart)

   - Cleanup the flush logic (Chengming)

   - sed opal keyring support (Greg)

   - Fixes and improvements to the integrity support (Jinyoung)

   - Add some exports for bcachefs that we can hopefully delete again in
     the future (Kent)

   - deadline throttling fix (Zhiguo)

   - Series allowing building the kernel without buffer_head support
     (Christoph)

   - Sanitize the bio page adding flow (Christoph)

   - Write back cache fixes (Christoph)

   - MD updates via Song:
      - Fix perf regression for raid0 large sequential writes (Jan)
      - Fix split bio iostat for raid0 (David)
      - Various raid1 fixes (Heinz, Xueshi)
      - raid6test build fixes (WANG)
      - Deprecate bitmap file support (Christoph)
      - Fix deadlock with md sync thread (Yu)
      - Refactor md io accounting (Yu)
      - Various non-urgent fixes (Li, Yu, Jack)

   - Various fixes and cleanups (Arnd, Azeem, Chengming, Damien, Li,
     Ming, Nitesh, Ruan, Tejun, Thomas, Xu)"

* tag 'for-6.6/block-2023-08-28' of git://git.kernel.dk/linux: (113 commits)
  block: use strscpy() to instead of strncpy()
  block: sed-opal: keyring support for SED keys
  block: sed-opal: Implement IOC_OPAL_REVERT_LSP
  block: sed-opal: Implement IOC_OPAL_DISCOVERY
  blk-mq: prealloc tags when increase tagset nr_hw_queues
  blk-mq: delete redundant tagset map update when fallback
  blk-mq: fix tags leak when shrink nr_hw_queues
  ublk: zoned: support REQ_OP_ZONE_RESET_ALL
  md: raid0: account for split bio in iostat accounting
  md/raid0: Fix performance regression for large sequential writes
  md/raid0: Factor out helper for mapping and submitting a bio
  md raid1: allow writebehind to work on any leg device set WriteMostly
  md/raid1: hold the barrier until handle_read_error() finishes
  md/raid1: free the r1bio before waiting for blocked rdev
  md/raid1: call free_r1bio() before allow_barrier() in raid_end_bio_io()
  blk-cgroup: Fix NULL deref caused by blkg_policy_data being installed before init
  drivers/rnbd: restore sysfs interface to rnbd-client
  md/raid5-cache: fix null-ptr-deref for r5l_flush_stripe_to_raid()
  raid6: test: only check for Altivec if building on powerpc hosts
  raid6: test: make sure all intermediate and artifact files are .gitignored
  ...
2023-08-29 20:21:42 -07:00
Linus Torvalds
85eb043618 SCSI fixes on 20230827
Three small driver fixes and one larger unused function set removal in
 the raid class (so no external impact).
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "Three small driver fixes and one larger unused function set removal in
  the raid class (so no external impact)"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: snic: Fix double free in snic_tgt_create()
  scsi: core: raid_class: Remove raid_component_add()
  scsi: ufs: ufs-qcom: Clear qunipro_g4_sel for HW major version > 5
  scsi: ufs: mcq: Fix the search/wrap around logic
2023-08-27 07:33:54 -07:00
Karan Tilak Kumar
15924b0503 scsi: fnic: Replace sgreset tag with max_tag_id
sgreset is issued with a SCSI command pointer. The device reset code
assumes that it was issued on a hardware queue, and calls block multiqueue
layer. However, the assumption is broken, and there is no hardware queue
associated with the sgreset, and this leads to a crash due to a null
pointer exception.

Fix the code to use the max_tag_id as a tag which does not overlap with the
other tags issued by mid layer.

Tested by running FC traffic for a few minutes, and by issuing sgreset on
the device in parallel.  Without the fix, the crash is observed right away.
With this fix, no crash is observed.

Reviewed-by: Sesidhar Baddela <sebaddel@cisco.com>
Tested-by: Karan Tilak Kumar <kartilak@cisco.com>
Signed-off-by: Karan Tilak Kumar <kartilak@cisco.com>
Link: https://lore.kernel.org/r/20230817182146.229059-1-kartilak@cisco.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-08-25 17:15:09 -04:00
Michael Kelley
812fe6420a scsi: storvsc: Handle additional SRB status values
Testing of virtual Fibre Channel devices under Hyper-V has shown additional
SRB status values being returned for various error cases.  Because these
SRB status values are not recognized by storvsc, the I/O operations are not
flagged as an error. Requests are treated as if they completed normally but
with zero data transferred, which can cause a flood of retries.

Add definitions for these SRB status values and handle them like other
error statuses from the Hyper-V host.

Signed-off-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/1692984084-95105-1-git-send-email-mikelley@microsoft.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-08-25 17:10:02 -04:00