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2019-11-20scsi: core: Handle drivers which set sg_tablesize to zeroMichael Schmitz1-1/+2
commit 9393c8de628cf0968d81a17cc11841e42191e041 upstream. In scsi_mq_setup_tags(), cmd_size is calculated based on zero size for the scatter-gather list in case the low level driver uses SG_NONE in its host template. cmd_size is passed on to the block layer for calculation of the request size, and we've seen NULL pointer dereference errors from the block layer in drivers where SG_NONE is used and a mq IO scheduler is active, apparently as a consequence of this (see commit 68ab2d76e4be ("scsi: cxlflash: Set sg_tablesize to 1 instead of SG_NONE"), and a recent patch by Finn Thain converting the three m68k NFR5380 drivers to avoid setting SG_NONE). Try to avoid these errors by accounting for at least one sg list entry when calculating cmd_size, regardless of whether the low level driver set a zero sg_tablesize. Tested on 030 m68k with the atari_scsi driver - setting sg_tablesize to SG_NONE no longer results in a crash when loading this driver. CC: Finn Thain <fthain@telegraphics.com.au> Link: https://lore.kernel.org/r/1572922150-4358-1-git-send-email-schmitzmic@gmail.com Signed-off-by: Michael Schmitz <schmitzmic@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-12scsi: qla2xxx: stop timer in shutdown pathNicholas Piggin1-0/+4
[ Upstream commit d3566abb1a1e7772116e4d50fb6a58d19c9802e5 ] In shutdown/reboot paths, the timer is not stopped: qla2x00_shutdown pci_device_shutdown device_shutdown kernel_restart_prepare kernel_restart sys_reboot This causes lockups (on powerpc) when firmware config space access calls are interrupted by smp_send_stop later in reboot. Fixes: e30d1756480dc ("[SCSI] qla2xxx: Addition of shutdown callback handler.") Link: https://lore.kernel.org/r/20191024063804.14538-1-npiggin@gmail.com Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Acked-by: Himanshu Madhani <hmadhani@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-11-12scsi: sd: define variable dif as unsigned int instead of boolXiang Chen1-1/+2
[ Upstream commit 0cf9f4e547cebb5f5d2d046437c71ddcc8ea4a39 ] Variable dif in function sd_setup_read_write_cmnd() is the return value of function scsi_host_dif_capable() which returns dif capability of disks. If define it as bool, even for the disks which support DIF3, the function still return dif=1, which causes IO error. So define variable dif as unsigned int instead of bool. Fixes: e249e42d277e ("scsi: sd: Clean up sd_setup_read_write_cmnd()") Link: https://lore.kernel.org/r/1571725628-132736-1-git-send-email-chenxiang66@hisilicon.com Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-11-12scsi: qla2xxx: Initialized mailbox to prevent driver load failureHimanshu Madhani1-1/+2
[ Upstream commit c2ff2a36eff60efb5e123c940115216d6bf65684 ] This patch fixes issue with Gen7 adapter in a blade environment where one of the ports will not be detected by driver. Firmware expects mailbox 11 to be set or cleared by driver for newer ISP. Following message is seen in the log file: [ 18.810892] qla2xxx [0000:d8:00.0]-1820:1: **** Failed=102 mb[0]=4005 mb[1]=37 mb[2]=20 mb[3]=8 [ 18.819596] cmd=2 **** [mkp: typos] Link: https://lore.kernel.org/r/20191022193643.7076-2-hmadhani@marvell.com Signed-off-by: Himanshu Madhani <hmadhani@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-11-12scsi: lpfc: Honor module parameter lpfc_use_adiscDaniel Wagner1-2/+2
[ Upstream commit 0fd103ccfe6a06e40e2d9d8c91d96332cc9e1239 ] The initial lpfc_desc_set_adisc implementation in commit dea3101e0a5c ("lpfc: add Emulex FC driver version 8.0.28") enabled ADISC if cfg_use_adisc && RSCN_MODE && FCP_2_DEVICE In commit 92d7f7b0cde3 ("[SCSI] lpfc: NPIV: add NPIV support on top of SLI-3") this changed to (cfg_use_adisc && RSC_MODE) || FCP_2_DEVICE and later in commit ffc954936b13 ("[SCSI] lpfc 8.3.13: FC Discovery Fixes and enhancements.") to (cfg_use_adisc && RSC_MODE) || (FCP_2_DEVICE && FCP_TARGET) A customer reports that after a devloss, an ADISC failure is logged. It turns out the ADISC flag is set even the user explicitly set lpfc_use_adisc = 0. [Sat Dec 22 22:55:58 2018] lpfc 0000:82:00.0: 2:(0):0203 Devloss timeout on WWPN 50:01:43:80:12:8e:40:20 NPort x05df00 Data: x82000000 x8 xa [Sat Dec 22 23:08:20 2018] lpfc 0000:82:00.0: 2:(0):2755 ADISC failure DID:05DF00 Status:x9/x70000 [mkp: fixed Hannes' email] Fixes: 92d7f7b0cde3 ("[SCSI] lpfc: NPIV: add NPIV support on top of SLI-3") Cc: Dick Kennedy <dick.kennedy@broadcom.com> Cc: James Smart <james.smart@broadcom.com> Link: https://lore.kernel.org/r/20191022072112.132268-1-dwagner@suse.de Reviewed-by: Hannes Reinecke <hare@suse.de> Reviewed-by: James Smart <james.smart@broadcom.com> Signed-off-by: Daniel Wagner <dwagner@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-11-12scsi: ufs-bsg: Wake the device before sending raw upiu commandsAvri Altman1-0/+4
[ Upstream commit 74e5e468b664d3739b2872d54764af97ac38e795 ] The scsi async probe process is calling blk_pm_runtime_init for each lun, and then those request queues are monitored by the block layer pm engine (blk-pm.c). This is however, not the case for scsi-passthrough queues, created by bsg_setup_queue(). So the ufs-bsg driver might send various commands, disregarding the pm status of the device. This is wrong, regardless if its request queue is pm-aware or not. Fixes: df032bf27a41 (scsi: ufs: Add a bsg endpoint that supports UPIUs) Link: https://lore.kernel.org/r/1570696267-8487-1-git-send-email-avri.altman@wdc.com Reported-by: Yuliy Izrailov <yuliy.izrailov@wdc.com> Signed-off-by: Avri Altman <avri.altman@wdc.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-11-12scsi: lpfc: Check queue pointer before useDaniel Wagner1-1/+1
[ Upstream commit 535fb49e730a6fe1e9f11af4ae67ef4228ff4287 ] The queue pointer might not be valid. The rest of the code checks the pointer before accessing it. lpfc_sli4_process_missed_mbox_completions is the only place where the check is missing. Fixes: 657add4e5e15 ("scsi: lpfc: Fix poor use of hardware queues if fewer irq vectors") Cc: James Smart <jsmart2021@gmail.com> Link: https://lore.kernel.org/r/20191018162111.8798-1-dwagner@suse.de Signed-off-by: Daniel Wagner <dwagner@suse.de> Reviewed-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-11-12scsi: qla2xxx: fixup incorrect usage of host_byteHannes Reinecke1-3/+3
[ Upstream commit 66cf50e65b183c863825f5c28a818e3f47a72e40 ] DRIVER_ERROR is a a driver byte setting, not a host byte. The qla2xxx driver should rather return DID_ERROR here to be in line with the other drivers. Link: https://lore.kernel.org/r/20191018140458.108278-1-hare@suse.de Signed-off-by: Hannes Reinecke <hare@suse.com> Acked-by: Himanshu Madhani <hmadhani@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-11-10scsi: hpsa: add missing hunks in reset-patchDon Brace1-0/+4
[ Upstream commit 134993456c28c2ae14bd953236eb0742fe23d577 ] Correct returning from reset before outstanding commands are completed for the device. Link: https://lore.kernel.org/r/157107623870.17997.11208813089704833029.stgit@brunhilda Reviewed-by: Scott Benesh <scott.benesh@microsemi.com> Reviewed-by: Kevin Barnett <kevin.barnett@microsemi.com> Signed-off-by: Don Brace <don.brace@microsemi.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-11-10scsi: fix kconfig dependency warning related to 53C700_LE_ON_BEThomas Bogendoerfer1-1/+1
[ Upstream commit 8cbf0c173aa096dda526d1ccd66fc751c31da346 ] When building a kernel with SCSI_SNI_53C710 enabled, Kconfig warns: WARNING: unmet direct dependencies detected for 53C700_LE_ON_BE Depends on [n]: SCSI_LOWLEVEL [=y] && SCSI [=y] && SCSI_LASI700 [=n] Selected by [y]: - SCSI_SNI_53C710 [=y] && SCSI_LOWLEVEL [=y] && SNI_RM [=y] && SCSI [=y] Add the missing depends SCSI_SNI_53C710 to 53C700_LE_ON_BE to fix it. Link: https://lore.kernel.org/r/20191009151128.32411-1-tbogendoerfer@suse.de Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-11-10scsi: sni_53c710: fix compilation errorThomas Bogendoerfer1-3/+1
[ Upstream commit 0ee6211408a8e939428f662833c7301394125b80 ] Drop out memory dev_printk() with wrong device pointer argument. [mkp: typo] Link: https://lore.kernel.org/r/20191009151118.32350-1-tbogendoerfer@suse.de Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-11-10scsi: scsi_dh_alua: handle RTPG sense code correctly during state transitionsHannes Reinecke1-5/+16
[ Upstream commit b6ce6fb121a655aefe41dccc077141c102145a37 ] Some arrays are not capable of returning RTPG data during state transitioning, but rather return an 'LUN not accessible, asymmetric access state transition' sense code. In these cases we can set the state to 'transitioning' directly and don't need to evaluate the RTPG data (which we won't have anyway). Link: https://lore.kernel.org/r/20191007135701.32389-1-hare@suse.de Reviewed-by: Laurence Oberman <loberman@redhat.com> Reviewed-by: Ewan D. Milne <emilne@redhat.com> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-11-10scsi: qla2xxx: fix a potential NULL pointer dereferenceAllen Pais1-0/+4
[ Upstream commit 35a79a63517981a8aea395497c548776347deda8 ] alloc_workqueue is not checked for errors and as a result a potential NULL dereference could occur. Link: https://lore.kernel.org/r/1568824618-4366-1-git-send-email-allen.pais@oracle.com Signed-off-by: Allen Pais <allen.pais@oracle.com> Reviewed-by: Martin Wilck <mwilck@suse.com> Acked-by: Himanshu Madhani <hmadhani@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-11-06scsi: qla2xxx: Fix partial flash write of MBIQuinn Tran1-4/+3
commit 8d8b83f5be2a3bdac3695a94e6cb5e50bd114869 upstream. For new adapters with multiple flash regions to write to, current code allows FW & Boot regions to be written, while other regions are blocked via sysfs. The fix is to block all flash read/write through sysfs interface. Fixes: e81d1bcbde06 ("scsi: qla2xxx: Further limit FLASH region write access from SysFS") Cc: stable@vger.kernel.org # 5.2 Link: https://lore.kernel.org/r/20191022193643.7076-3-hmadhani@marvell.com Signed-off-by: Quinn Tran <qutran@marvell.com> Signed-off-by: Girish Basrur <gbasrur@marvell.com> Signed-off-by: Himanshu Madhani <hmadhani@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-10-29scsi: ch: Make it possible to open a ch device multiple times againBart Van Assche1-1/+0
commit 6a0990eaa768dfb7064f06777743acc6d392084b upstream. Clearing ch->device in ch_release() is wrong because that pointer must remain valid until ch_remove() is called. This patch fixes the following crash the second time a ch device is opened: BUG: kernel NULL pointer dereference, address: 0000000000000790 RIP: 0010:scsi_device_get+0x5/0x60 Call Trace: ch_open+0x4c/0xa0 [ch] chrdev_open+0xa2/0x1c0 do_dentry_open+0x13a/0x380 path_openat+0x591/0x1470 do_filp_open+0x91/0x100 do_sys_open+0x184/0x220 do_syscall_64+0x5f/0x1a0 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Fixes: 085e56766f74 ("scsi: ch: add refcounting") Cc: Hannes Reinecke <hare@suse.de> Cc: <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20191009173536.247889-1-bvanassche@acm.org Reported-by: Rob Turk <robtu@rtist.nl> Suggested-by: Rob Turk <robtu@rtist.nl> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-10-29scsi: core: try to get module before removing deviceYufen Yu1-1/+10
commit 77c301287ebae86cc71d03eb3806f271cb14da79 upstream. We have a test case like block/001 in blktests, which will create a scsi device by loading scsi_debug module and then try to delete the device by sysfs interface. At the same time, it may remove the scsi_debug module. And getting a invalid paging request BUG_ON as following: [ 34.625854] BUG: unable to handle page fault for address: ffffffffa0016bb8 [ 34.629189] Oops: 0000 [#1] SMP PTI [ 34.629618] CPU: 1 PID: 450 Comm: bash Tainted: G W 5.4.0-rc3+ #473 [ 34.632524] RIP: 0010:scsi_proc_hostdir_rm+0x5/0xa0 [ 34.643555] CR2: ffffffffa0016bb8 CR3: 000000012cd88000 CR4: 00000000000006e0 [ 34.644545] Call Trace: [ 34.644907] scsi_host_dev_release+0x6b/0x1f0 [ 34.645511] device_release+0x74/0x110 [ 34.646046] kobject_put+0x116/0x390 [ 34.646559] put_device+0x17/0x30 [ 34.647041] scsi_target_dev_release+0x2b/0x40 [ 34.647652] device_release+0x74/0x110 [ 34.648186] kobject_put+0x116/0x390 [ 34.648691] put_device+0x17/0x30 [ 34.649157] scsi_device_dev_release_usercontext+0x2e8/0x360 [ 34.649953] execute_in_process_context+0x29/0x80 [ 34.650603] scsi_device_dev_release+0x20/0x30 [ 34.651221] device_release+0x74/0x110 [ 34.651732] kobject_put+0x116/0x390 [ 34.652230] sysfs_unbreak_active_protection+0x3f/0x50 [ 34.652935] sdev_store_delete.cold.4+0x71/0x8f [ 34.653579] dev_attr_store+0x1b/0x40 [ 34.654103] sysfs_kf_write+0x3d/0x60 [ 34.654603] kernfs_fop_write+0x174/0x250 [ 34.655165] __vfs_write+0x1f/0x60 [ 34.655639] vfs_write+0xc7/0x280 [ 34.656117] ksys_write+0x6d/0x140 [ 34.656591] __x64_sys_write+0x1e/0x30 [ 34.657114] do_syscall_64+0xb1/0x400 [ 34.657627] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 34.658335] RIP: 0033:0x7f156f337130 During deleting scsi target, the scsi_debug module have been removed. Then, sdebug_driver_template belonged to the module cannot be accessd, resulting in scsi_proc_hostdir_rm() BUG_ON. To fix the bug, we add scsi_device_get() in sdev_store_delete() to try to increase refcount of module, avoiding the module been removed. Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20191015130556.18061-1-yuyufen@huawei.com Signed-off-by: Yufen Yu <yuyufen@huawei.com> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-10-29scsi: core: save/restore command resid for error handlingDamien Le Moal1-0/+3
commit 8f8fed0cdbbd6cdbf28d9ebe662f45765d2f7d39 upstream. When a non-passthrough command is terminated with CHECK CONDITION, request sense is executed by hijacking the command descriptor. Since scsi_eh_prep_cmnd() and scsi_eh_restore_cmnd() do not save/restore the original command resid, the value returned on failure of the original command is lost and replaced with the value set by the execution of the request sense command. This value may in many instances be unaligned to the device sector size, causing sd_done() to print a warning message about the incorrect unaligned resid before the command is retried. Fix this problem by saving the original command residual in struct scsi_eh_save using scsi_eh_prep_cmnd() and restoring it in scsi_eh_restore_cmnd(). In addition, to make sure that the request sense command is executed with a correctly initialized command structure, also reset the residual to 0 in scsi_eh_prep_cmnd() after saving the original command value in struct scsi_eh_save. Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20191001074839.1994-1-damien.lemoal@wdc.com Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-10-29scsi: sd: Ignore a failure to sync cache due to lack of authorizationOliver Neukum1-1/+2
commit 21e3d6c81179bbdfa279efc8de456c34b814cfd2 upstream. I've got a report about a UAS drive enclosure reporting back Sense: Logical unit access not authorized if the drive it holds is password protected. While the drive is obviously unusable in that state as a mass storage device, it still exists as a sd device and when the system is asked to perform a suspend of the drive, it will be sent a SYNCHRONIZE CACHE. If that fails due to password protection, the error must be ignored. Cc: <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20190903101840.16483-1-oneukum@suse.com Signed-off-by: Oliver Neukum <oneukum@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-10-29scsi: qla2xxx: Fix N2N link up failQuinn Tran2-4/+4
[ Upstream commit f3f1938bb673b1b5ad182c4608f5f8a24921eea3 ] During link up/bounce, qla driver would do command flush as part of cleanup. In this case, the flush can intefere with FW state. This patch allows FW to be in control of link up. Link: https://lore.kernel.org/r/20190912180918.6436-7-hmadhani@marvell.com Signed-off-by: Quinn Tran <qutran@marvell.com> Signed-off-by: Himanshu Madhani <hmadhani@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-10-29scsi: qla2xxx: Fix N2N link resetQuinn Tran4-34/+103
[ Upstream commit 7f2a398d59d658818f3d219645164676fbbc88e8 ] Fix stalled link recovery for N2N with FC-NVMe connection. Link: https://lore.kernel.org/r/20190912180918.6436-6-hmadhani@marvell.com Signed-off-by: Quinn Tran <qutran@marvell.com> Signed-off-by: Himanshu Madhani <hmadhani@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-10-29scsi: qla2xxx: Fix stale mem access on driver unloadQuinn Tran2-13/+9
[ Upstream commit fd5564ba54e0d8a9e3e823d311b764232e09eb5f ] On driver unload, 'remove_one' thread was allowed to advance, while session cleanup still lag behind. This patch ensures session deletion will finish before remove_one can advance. Link: https://lore.kernel.org/r/20190912180918.6436-4-hmadhani@marvell.com Signed-off-by: Quinn Tran <qutran@marvell.com> Signed-off-by: Himanshu Madhani <hmadhani@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-10-29scsi: qla2xxx: Fix unbound sleep in fcport delete path.Quinn Tran1-0/+4
[ Upstream commit c3b6a1d397420a0fdd97af2f06abfb78adc370df ] There are instances, though rare, where a LOGO request cannot be sent out and the thread in free session done can wait indefinitely. Fix this by putting an upper bound to sleep. Link: https://lore.kernel.org/r/20190912180918.6436-3-hmadhani@marvell.com Signed-off-by: Quinn Tran <qutran@marvell.com> Signed-off-by: Himanshu Madhani <hmadhani@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-10-29scsi: qla2xxx: Silence fwdump template messageHimanshu Madhani1-1/+1
[ Upstream commit 248a445adfc8c33ffd67cf1f2e336578e34f9e21 ] Print if fwdt template is present or not, only when ql2xextended_error_logging is enabled. Link: https://lore.kernel.org/r/20190912180918.6436-2-hmadhani@marvell.com Signed-off-by: Himanshu Madhani <hmadhani@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-10-29scsi: megaraid: disable device when probe failed after enabled deviceXiang Chen1-2/+2
[ Upstream commit 70054aa39a013fa52eff432f2223b8bd5c0048f8 ] For pci device, need to disable device when probe failed after enabled device. Link: https://lore.kernel.org/r/1567818450-173315-1-git-send-email-chenxiang66@hisilicon.com Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com> Reviewed-by: John Garry <john.garry@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-10-29scsi: ufs: skip shutdown if hba is not poweredStanley Chu1-0/+3
[ Upstream commit f51913eef23f74c3bd07899dc7f1ed6df9e521d8 ] In some cases, hba may go through shutdown flow without successful initialization and then make system hang. For example, if ufshcd_change_power_mode() gets error and leads to ufshcd_hba_exit() to release resources of the host, future shutdown flow may hang the system since the host register will be accessed in unpowered state. To solve this issue, simply add checking to skip shutdown for above kind of situation. Link: https://lore.kernel.org/r/1568780438-28753-1-git-send-email-stanley.chu@mediatek.com Signed-off-by: Stanley Chu <stanley.chu@mediatek.com> Acked-by: Bean Huo <beanhuo@micron.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-10-07scsi: core: Reduce memory required for SCSI loggingBart Van Assche1-45/+3
[ Upstream commit dccc96abfb21dc19d69e707c38c8ba439bba7160 ] The data structure used for log messages is so large that it can cause a boot failure. Since allocations from that data structure can fail anyway, use kmalloc() / kfree() instead of that data structure. See also https://bugzilla.kernel.org/show_bug.cgi?id=204119. See also commit ded85c193a39 ("scsi: Implement per-cpu logging buffer") # v4.0. Reported-by: Jan Palus <jpalus@fastmail.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Hannes Reinecke <hare@suse.com> Cc: Johannes Thumshirn <jthumshirn@suse.de> Cc: Ming Lei <ming.lei@redhat.com> Cc: Jan Palus <jpalus@fastmail.com> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-10-05scsi: implement .cleanup_rq callbackMing Lei1-0/+13
[ Upstream commit b7e9e1fb7a9227be34ad4a5e778022c3164494cf ] Implement .cleanup_rq() callback for freeing driver private part of the request. Then we can avoid to leak this part if the request isn't completed by SCSI, and freed by blk-mq or upper layer(such as dm-rq) finally. Cc: Ewan D. Milne <emilne@redhat.com> Cc: Bart Van Assche <bvanassche@acm.org> Cc: Hannes Reinecke <hare@suse.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Mike Snitzer <snitzer@redhat.com> Cc: dm-devel@redhat.com Cc: <stable@vger.kernel.org> Fixes: 396eaf21ee17 ("blk-mq: improve DM's blk-mq IO merging via blk_insert_cloned_request feedback") Signed-off-by: Ming Lei <ming.lei@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-10-05scsi: qla2xxx: Fix Relogin to prevent modifying scan_state flagQuinn Tran3-6/+21
commit 8b5292bcfcacf15182a77a973a98d310e76fd58b upstream. Relogin fails to move forward due to scan_state flag indicating device is not there. Before relogin process, Session delete process accidently modified the scan_state flag. [mkp: typos plus corrected Fixes: sha as reported by sfr] Fixes: 2dee5521028c ("scsi: qla2xxx: Fix login state machine freeze") Cc: stable@vger.kernel.org Signed-off-by: Quinn Tran <qutran@marvell.com> Signed-off-by: Himanshu Madhani <hmadhani@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-10-05scsi: scsi_dh_rdac: zero cdb in send_mode_select()Martin Wilck1-0/+2
commit 57adf5d4cfd3198aa480e7c94a101fc8c4e6109d upstream. cdb in send_mode_select() is not zeroed and is only partially filled in rdac_failover_get(), which leads to some random data getting to the device. Users have reported storage responding to such commands with INVALID FIELD IN CDB. Code before commit 327825574132 was not affected, as it called blk_rq_set_block_pc(). Fix this by zeroing out the cdb first. Identified & fix proposed by HPE. Fixes: 327825574132 ("scsi_dh_rdac: switch to scsi_execute_req_flags()") Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20190904155205.1666-1-martin.wilck@suse.com Signed-off-by: Martin Wilck <mwilck@suse.com> Acked-by: Ales Novak <alnovak@suse.cz> Reviewed-by: Shane Seymour <shane.seymour@hpe.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-09-07Merge tag 'scsi-fixes' of ↵Linus Torvalds2-2/+2
git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi Pull SCSI fix from James Bottomley: "Just a single lpfc fix adjusting the number of available queues for high CPU count systems" * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: scsi: lpfc: Raise config max for lpfc_fcp_mq_threshold variable
2019-08-30scsi: lpfc: Raise config max for lpfc_fcp_mq_threshold variableJames Smart2-2/+2
Raise the config max for lpfc_fcp_mq_threshold variable to 256. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> CC: Hannes Reinecke <hare@suse.de> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-24Merge tag 'scsi-fixes' of ↵Linus Torvalds7-5/+42
git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi Pull SCSI fixes from James Bottomley: "Four fixes, three for edge conditions which don't occur very often. The lpfc fix mitigates memory exhaustion for some high CPU systems" * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: scsi: lpfc: Mitigate high memory pre-allocation by SCSI-MQ scsi: ufs: Fix NULL pointer dereference in ufshcd_config_vreg_hpm() scsi: target: tcmu: avoid use-after-free after command timeout scsi: qla2xxx: Fix gnl.l memory leak on adapter init failure
2019-08-22Merge tag 'Wimplicit-fallthrough-5.3-rc6' of ↵Linus Torvalds1-0/+1
git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux Pull more fallthrough fixes from Gustavo A. R. Silva: "Fix fall-through warnings on arm and mips for multiple configurations" * tag 'Wimplicit-fallthrough-5.3-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux: video: fbdev: acornfb: Mark expected switch fall-through scsi: libsas: sas_discover: Mark expected switch fall-through MIPS: Octeon: Mark expected switch fall-through power: supply: ab8500_charger: Mark expected switch fall-through watchdog: wdt285: Mark expected switch fall-through mtd: sa1100: Mark expected switch fall-through drm/sun4i: tcon: Mark expected switch fall-through drm/sun4i: sun6i_mipi_dsi: Mark expected switch fall-through ARM: riscpc: Mark expected switch fall-through dmaengine: fsldma: Mark expected switch fall-through
2019-08-21scsi: libsas: sas_discover: Mark expected switch fall-throughGustavo A. R. Silva1-0/+1
Mark switch cases where we are expecting to fall through. Fix the following warning (Building: mtx1_defconfig mips): drivers/scsi/libsas/sas_discover.c: In function ‘sas_discover_domain’: ./include/linux/printk.h:309:2: warning: this statement may fall through [-Wimplicit-fallthrough=] printk(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/scsi/libsas/sas_discover.c:459:3: note: in expansion of macro ‘pr_notice’ pr_notice("ATA device seen but CONFIG_SCSI_SAS_ATA=N so cannot attach\n"); ^~~~~~~~~ drivers/scsi/libsas/sas_discover.c:462:2: note: here default: ^~~~~~~ Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
2019-08-20scsi: lpfc: Mitigate high memory pre-allocation by SCSI-MQJames Smart4-4/+27
When SCSI-MQ is enabled, the SCSI-MQ layers will do pre-allocation of MQ resources based on shost values set by the driver. In newer cases of the driver, which attempts to set nr_hw_queues to the cpu count, the multipliers become excessive, with a single shost having SCSI-MQ pre-allocation reaching into the multiple GBytes range. NPIV, which creates additional shosts, only multiply this overhead. On lower-memory systems, this can exhaust system memory very quickly, resulting in a system crash or failures in the driver or elsewhere due to low memory conditions. After testing several scenarios, the situation can be mitigated by limiting the value set in shost->nr_hw_queues to 4. Although the shost values were changed, the driver still had per-cpu hardware queues of its own that allowed parallelization per-cpu. Testing revealed that even with the smallish number for nr_hw_queues for SCSI-MQ, performance levels remained near maximum with the within-driver affiinitization. A module parameter was created to allow the value set for the nr_hw_queues to be tunable. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Reviewed-by: Ming Lei <ming.lei@redhat.com> Reviewed-by: Ewan D. Milne <emilne@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-15scsi: ufs: Fix NULL pointer dereference in ufshcd_config_vreg_hpm()Adrian Hunter1-0/+3
Fix the following BUG: [ 187.065689] BUG: kernel NULL pointer dereference, address: 000000000000001c [ 187.065790] RIP: 0010:ufshcd_vreg_set_hpm+0x3c/0x110 [ufshcd_core] [ 187.065938] Call Trace: [ 187.065959] ufshcd_resume+0x72/0x290 [ufshcd_core] [ 187.065980] ufshcd_system_resume+0x54/0x140 [ufshcd_core] [ 187.065993] ? pci_pm_restore+0xb0/0xb0 [ 187.066005] ufshcd_pci_resume+0x15/0x20 [ufshcd_pci] [ 187.066017] pci_pm_thaw+0x4c/0x90 [ 187.066030] dpm_run_callback+0x5b/0x150 [ 187.066043] device_resume+0x11b/0x220 Voltage regulators are optional, so functions must check they exist before dereferencing. Note this issue is hidden if CONFIG_REGULATORS is not set, because the offending code is optimised away. Notes for stable: The issue first appears in commit 57d104c153d3 ("ufs: add UFS power management support") but is inadvertently fixed in commit 60f0187031c0 ("scsi: ufs: disable vccq if it's not needed by UFS device") which in turn was reverted by commit 730679817d83 ("Revert "scsi: ufs: disable vccq if it's not needed by UFS device""). So fix applies v3.18 to v4.5 and v5.1+ Fixes: 57d104c153d3 ("ufs: add UFS power management support") Fixes: 730679817d83 ("Revert "scsi: ufs: disable vccq if it's not needed by UFS device"") Cc: stable@vger.kernel.org Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-15scsi: qla2xxx: Fix gnl.l memory leak on adapter init failureBill Kuzeja2-1/+12
If HBA initialization fails unexpectedly (exiting via probe_failed:), we may fail to free vha->gnl.l. So that we don't attempt to double free, set this pointer to NULL after a free and check for NULL at probe_failed: so we know whether or not to call dma_free_coherent. Signed-off-by: Bill Kuzeja <william.kuzeja@stratus.com> Acked-by: Himanshu Madhani <hmadhani@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-13Merge tag 'scsi-fixes' of ↵Linus Torvalds1-2/+21
git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi Pull SCSI fix from James Bottomley: "Single lpfc fix, for a single-cpu corner case" * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: scsi: lpfc: Fix crash when cpu count is 1 and null irq affinity mask
2019-08-10Merge tag 'Wimplicit-fallthrough-5.3-rc4' of ↵Linus Torvalds1-0/+8
git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux Pull fall-through fixes from Gustavo A. R. Silva: "Mark more switch cases where we are expecting to fall through, fixing fall-through warnings in arm, sparc64, mips, i386 and s390" * tag 'Wimplicit-fallthrough-5.3-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux: ARM: ep93xx: Mark expected switch fall-through scsi: fas216: Mark expected switch fall-throughs pcmcia: db1xxx_ss: Mark expected switch fall-throughs video: fbdev: omapfb_main: Mark expected switch fall-throughs watchdog: riowd: Mark expected switch fall-through s390/net: Mark expected switch fall-throughs crypto: ux500/crypt: Mark expected switch fall-throughs watchdog: wdt977: Mark expected switch fall-through watchdog: scx200_wdt: Mark expected switch fall-through watchdog: Mark expected switch fall-throughs ARM: signal: Mark expected switch fall-through mfd: omap-usb-host: Mark expected switch fall-throughs mfd: db8500-prcmu: Mark expected switch fall-throughs ARM: OMAP: dma: Mark expected switch fall-throughs ARM: alignment: Mark expected switch fall-throughs ARM: tegra: Mark expected switch fall-through ARM/hw_breakpoint: Mark expected switch fall-throughs
2019-08-10scsi: fas216: Mark expected switch fall-throughsGustavo A. R. Silva1-0/+8
Mark switch cases where we are expecting to fall through. Fix the following warnings (Building: rpc_defconfig arm): drivers/scsi/arm/fas216.c: In function ‘fas216_disconnect_intr’: drivers/scsi/arm/fas216.c:913:6: warning: this statement may fall through [-Wimplicit-fallthrough=] if (fas216_get_last_msg(info, info->scsi.msgin_fifo) == ABORT) { ^ drivers/scsi/arm/fas216.c:919:2: note: here default: /* huh? */ ^~~~~~~ drivers/scsi/arm/fas216.c: In function ‘fas216_kick’: drivers/scsi/arm/fas216.c:1959:3: warning: this statement may fall through [-Wimplicit-fallthrough=] fas216_allocate_tag(info, SCpnt); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/scsi/arm/fas216.c:1960:2: note: here case TYPE_OTHER: ^~~~ drivers/scsi/arm/fas216.c: In function ‘fas216_busservice_intr’: drivers/scsi/arm/fas216.c:1413:3: warning: this statement may fall through [-Wimplicit-fallthrough=] fas216_stoptransfer(info); ^~~~~~~~~~~~~~~~~~~~~~~~~ drivers/scsi/arm/fas216.c:1414:2: note: here case STATE(STAT_STATUS, PHASE_SELSTEPS):/* Sel w/ steps -> Status */ ^~~~ drivers/scsi/arm/fas216.c:1424:3: warning: this statement may fall through [-Wimplicit-fallthrough=] fas216_stoptransfer(info); ^~~~~~~~~~~~~~~~~~~~~~~~~ drivers/scsi/arm/fas216.c:1425:2: note: here case STATE(STAT_MESGIN, PHASE_COMMAND): /* Command -> Message In */ ^~~~ drivers/scsi/arm/fas216.c: In function ‘fas216_funcdone_intr’: drivers/scsi/arm/fas216.c:1573:6: warning: this statement may fall through [-Wimplicit-fallthrough=] if ((stat & STAT_BUSMASK) == STAT_MESGIN) { ^ drivers/scsi/arm/fas216.c:1579:2: note: here default: ^~~~~~~ drivers/scsi/arm/fas216.c: In function ‘fas216_handlesync’: drivers/scsi/arm/fas216.c:605:20: warning: this statement may fall through [-Wimplicit-fallthrough=] info->scsi.phase = PHASE_MSGOUT_EXPECT; ~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~ drivers/scsi/arm/fas216.c:607:2: note: here case async: ^~~~ Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
2019-08-08scsi: lpfc: Fix crash when cpu count is 1 and null irq affinity maskJames Smart1-2/+21
When a configurations runs with a single cpu (such as a kdump kernel), which causes the driver to request a single vector, when the driver subsequently requests an irq affinity mask, the mask comes back null. The driver currently does nothing in this scenario, which leaves mappings to hardware queues incomplete and crashes the system. Fix by recognizing the null mask and assigning the vector to the first cpu in the system. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-03Merge tag 'scsi-fixes' of ↵Linus Torvalds5-83/+88
git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi Pull SCSI fixes from James Bottomley: "Seven fixes to four drivers with no core changes. The mpt3sas one is theoretical until we get a CPU that goes up to 64 bits physical, the qla2xxx one fixes an oops in a driver initialization error leg and the others are mostly cosmetic" [ The fcoe patches may be worth highlighting - they may be "just" cleanups, but they simplify and fix the odd fc_rport_priv structure handling rules so that the new gcc-9 warnings about memset crossing structure boundaries are gone. The old code was hard for humans to understand too, and really confused the compiler sanity checks - Linus ] * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: scsi: qla2xxx: Fix possible fcport null-pointer dereferences scsi: mpt3sas: Use 63-bit DMA addressing on SAS35 HBA scsi: hpsa: remove printing internal cdb on tag collision scsi: hpsa: correct scsi command status issue after reset scsi: fcoe: pass in fcoe_rport structure instead of fc_rport_priv scsi: fcoe: Embed fc_rport_priv in fcoe_rport structure scsi: libfc: Whitespace cleanup in libfc.h
2019-07-30scsi: qla2xxx: Fix possible fcport null-pointer dereferencesJia-Ju Bai1-1/+1
In qla2x00_alloc_fcport(), fcport is assigned to NULL in the error handling code on line 4880: fcport = NULL; Then fcport is used on lines 4883-4886: INIT_WORK(&fcport->del_work, qla24xx_delete_sess_fn); INIT_WORK(&fcport->reg_work, qla_register_fcport_fn); INIT_LIST_HEAD(&fcport->gnl_entry); INIT_LIST_HEAD(&fcport->list); Thus, possible null-pointer dereferences may occur. To fix these bugs, qla2x00_alloc_fcport() directly returns NULL in the error handling code. These bugs are found by a static analysis tool STCheck written by us. Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com> Acked-by: Himanshu Madhani <hmadhani@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-07-30scsi: mpt3sas: Use 63-bit DMA addressing on SAS35 HBASuganath Prabu1-5/+7
Although SAS3 & SAS3.5 IT HBA controllers support 64-bit DMA addressing, as per hardware design, if DMA-able range contains all 64-bits set (0xFFFFFFFF-FFFFFFFF) then it results in a firmware fault. E.g. SGE's start address is 0xFFFFFFFF-FFFF000 and data length is 0x1000 bytes. when HBA tries to DMA the data at 0xFFFFFFFF-FFFFFFFF location then HBA will fault the firmware. Driver will set 63-bit DMA mask to ensure the above address will not be used. Cc: <stable@vger.kernel.org> # 5.1.20+ Signed-off-by: Suganath Prabu <suganath-prabu.subramani@broadcom.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-07-30scsi: hpsa: remove printing internal cdb on tag collisionDon Brace1-2/+0
Remove racy printing of internal commands. Completion thread can be cleaning up the command in parallel. Reviewed-by: Bader Ali - Saleh <bader.alisaleh@microsemi.com> Reviewed-by: Scott Teel <scott.teel@microsemi.com> Reviewed-by: Scott Benesh <scott.benesh@microsemi.com> Reviewed-by: Kevin Barnett <kevin.barnett@microsemi.com> Signed-off-by: Don Brace <don.brace@microsemi.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-07-30scsi: hpsa: correct scsi command status issue after resetDon Brace1-1/+11
Reviewed-by: Bader Ali - Saleh <bader.alisaleh@microsemi.com> Reviewed-by: Scott Teel <scott.teel@microsemi.com> Reviewed-by: Scott Benesh <scott.benesh@microsemi.com> Reviewed-by: Kevin Barnett <kevin.barnett@microsemi.com> Signed-off-by: Don Brace <don.brace@microsemi.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-07-30scsi: fcoe: pass in fcoe_rport structure instead of fc_rport_privHannes Reinecke1-48/+51
Instead of using the generic 'fc_rport_priv' structure as argument and then having to painstakingly outcast this to fcoe_rport we should be passing the fcoe_rport structure itself and reduce complexity. Signed-off-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-07-30scsi: fcoe: Embed fc_rport_priv in fcoe_rport structureHannes Reinecke2-32/+24
Gcc-9 complains for a memset across pointer boundaries, which happens as the code tries to allocate a flexible array on the stack. Turns out we cannot do this without relying on gcc-isms, so with this patch we'll embed the fc_rport_priv structure into fcoe_rport, can use the normal 'container_of' outcast, and will only have to do a memset over one structure. Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-07-27Merge tag 'scsi-fixes' of ↵Linus Torvalds7-21/+32
git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi Pull SCSI fixes from James Bottomley: "Nine fixes: The most important core one is the dma_max_mapping_size fix that corrects the boot problem Gunter Roeck was having. A couple of other driver only fixes are significant, like the cxgbi selector support addition, the alua 2 second delay and the fdomain build fix" * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: scsi: scsi_dh_alua: always use a 2 second delay before retrying RTPG scsi: ibmvfc: fix WARN_ON during event pool release scsi: fcoe: fix a typo scsi: megaraid_sas: Make some functions static scsi: megaraid_sas: fix panic on loading firmware crashdump scsi: megaraid_sas: fix spelling mistake "megarid_sas" -> "megaraid_sas" scsi: core: fix the dma_max_mapping_size call scsi: fdomain: fix building pcmcia front-end scsi: target: cxgbit: add support for IEEE_8021QAZ_APP_SEL_STREAM selector
2019-07-24scsi: scsi_dh_alua: always use a 2 second delay before retrying RTPGHannes Reinecke1-1/+6
Retrying immediately after we've received a 'transitioning' sense code is pretty much pointless, we should always use a delay before retrying. So ensure the default delay is applied before retrying. Signed-off-by: Hannes Reinecke <hare@suse.com> Tested-by: Zhangguanghui <zhang.guanghui@h3c.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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