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2021-12-31Merge tag 'scsi-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi Pull SCSI fixes from James Bottomley: "Three fixes, all in drivers. The lpfc one doesn't look exploitable, but nasty things could happen in string operations if mybuf ends up with an on stack unterminated string" * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: scsi: vmw_pvscsi: Set residual data length conditionally scsi: libiscsi: Fix UAF in iscsi_conn_get_param()/iscsi_conn_teardown() scsi: lpfc: Terminate string in lpfc_debugfs_nvmeio_trc_write()
2021-12-22scsi: vmw_pvscsi: Set residual data length conditionallyAlexey Makhalov
The PVSCSI implementation in the VMware hypervisor under specific configuration ("SCSI Bus Sharing" set to "Physical") returns zero dataLen in the completion descriptor for READ CAPACITY(16). As a result, the kernel can not detect proper disk geometry. This can be recognized by the kernel message: [ 0.776588] sd 1:0:0:0: [sdb] Sector size 0 reported, assuming 512. The PVSCSI implementation in QEMU does not set dataLen at all, keeping it zeroed. This leads to a boot hang as was reported by Shmulik Ladkani. It is likely that the controller returns the garbage at the end of the buffer. Residual length should be set by the driver in that case. The SCSI layer will erase corresponding data. See commit bdb2b8cab439 ("[SCSI] erase invalid data returned by device") for details. Commit e662502b3a78 ("scsi: vmw_pvscsi: Set correct residual data length") introduced the issue by setting residual length unconditionally, causing the SCSI layer to erase the useful payload beyond dataLen when this value is returned as 0. As a result, considering existing issues in implementations of PVSCSI controllers, we do not want to call scsi_set_resid() when dataLen == 0. Calling scsi_set_resid() has no effect if dataLen equals buffer length. Link: https://lore.kernel.org/lkml/20210824120028.30d9c071@blondie/ Link: https://lore.kernel.org/r/20211220190514.55935-1-amakhalov@vmware.com Fixes: e662502b3a78 ("scsi: vmw_pvscsi: Set correct residual data length") Cc: Matt Wang <wwentao@vmware.com> Cc: Martin K. Petersen <martin.petersen@oracle.com> Cc: Vishal Bhakta <vbhakta@vmware.com> Cc: VMware PV-Drivers <pv-drivers@vmware.com> Cc: James E.J. Bottomley <jejb@linux.ibm.com> Cc: linux-scsi@vger.kernel.org Cc: stable@vger.kernel.org Reported-and-suggested-by: Shmulik Ladkani <shmulik.ladkani@gmail.com> Signed-off-by: Alexey Makhalov <amakhalov@vmware.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-12-22scsi: libiscsi: Fix UAF in iscsi_conn_get_param()/iscsi_conn_teardown()Lixiaokeng
|- iscsi_if_destroy_conn |-dev_attr_show |-iscsi_conn_teardown |-spin_lock_bh |-iscsi_sw_tcp_conn_get_param |-kfree(conn->persistent_address) |-iscsi_conn_get_param |-kfree(conn->local_ipaddr) ==>|-read persistent_address ==>|-read local_ipaddr |-spin_unlock_bh When iscsi_conn_teardown() and iscsi_conn_get_param() happen in parallel, a UAF may be triggered. Link: https://lore.kernel.org/r/046ec8a0-ce95-d3fc-3235-666a7c65b224@huawei.com Reported-by: Lu Tixiong <lutianxiong@huawei.com> Reviewed-by: Mike Christie <michael.christie@oracle.com> Reviewed-by: Lee Duncan <lduncan@suse.com> Signed-off-by: Lixiaokeng <lixiaokeng@huawei.com> Signed-off-by: Linfeilong <linfeilong@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-12-17Merge tag 'scsi-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi Pull SCSI fix from James Bottomley: "One driver fix: the pm8001 has never actually worked on a system with an IOMMU and this fixes that use case" * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: scsi: pm8001: Fix phys_to_virt() usage on dma_addr_t
2021-12-16scsi: lpfc: Terminate string in lpfc_debugfs_nvmeio_trc_write()Dan Carpenter
The "mybuf" string comes from the user, so we need to ensure that it is NUL terminated. Link: https://lore.kernel.org/r/20211214070527.GA27934@kili Fixes: bd2cdd5e400f ("scsi: lpfc: NVME Initiator: Add debugfs support") Reviewed-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-12-13scsi: pm8001: Fix phys_to_virt() usage on dma_addr_tJohn Garry
The driver supports a "direct" mode of operation, where the SMP req frame is directly copied into the command payload (and vice-versa for the SMP resp). To get at the SMP req frame data in the scatterlist the driver uses phys_to_virt() on the DMA mapped memory dma_addr_t . This is broken, and subsequently crashes as follows when an IOMMU is enabled: Unable to handle kernel paging request at virtual address ffff0000fcebfb00 ... pc : pm80xx_chip_smp_req+0x2d0/0x3d0 lr : pm80xx_chip_smp_req+0xac/0x3d0 pm80xx_chip_smp_req+0x2d0/0x3d0 pm8001_task_exec.constprop.0+0x368/0x520 pm8001_queue_command+0x1c/0x30 smp_execute_task_sg+0xdc/0x204 sas_discover_expander.part.0+0xac/0x6cc sas_discover_root_expander+0x8c/0x150 sas_discover_domain+0x3ac/0x6a0 process_one_work+0x1d0/0x354 worker_thread+0x13c/0x470 kthread+0x17c/0x190 ret_from_fork+0x10/0x20 Code: 371806e1 910006d6 6b16033f 54000249 (38766b05) ---[ end trace b91d59aaee98ea2d ]--- note: kworker/u192:0[7] exited with preempt_count 1 Instead use kmap_atomic(). -- Difference to v1: - use kmap_atomic() in both locations Difference to v2: - add whitespace around arithmetic (Damien) Link: https://lore.kernel.org/r/1639390248-213603-1-git-send-email-john.garry@huawei.com Reviewed-by: Damien Le Moal <damien.lemoal@opensource.wdc.com> Signed-off-by: John Garry <john.garry@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-12-11Merge tag 'scsi-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi Pull SCSI fixes from James Bottomley: "Four fixes, all in drivers. Three are small and obvious, the qedi one is a bit larger but also pretty obvious" * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: scsi: qla2xxx: Format log strings only if needed scsi: scsi_debug: Fix buffer size of REPORT ZONES command scsi: qedi: Fix cmd_cleanup_cmpl counter mismatch issue scsi: pm80xx: Do not call scsi_remove_host() in pm8001_alloc()
2021-12-06scsi: qla2xxx: Format log strings only if neededRoman Bolshakov
Commit 598a90f2002c ("scsi: qla2xxx: add ring buffer for tracing debug logs") introduced unconditional log string formatting to ql_dbg() even if ql_dbg_log event is disabled. It harms performance because some strings are formatted in fastpath and/or interrupt context. Link: https://lore.kernel.org/r/20211112145446.51210-1-r.bolshakov@yadro.com Fixes: 598a90f2002c ("scsi: qla2xxx: add ring buffer for tracing debug logs") Cc: Rajan Shanmugavelu <rajan.shanmugavelu@oracle.com> Cc: stable@vger.kernel.org Signed-off-by: Roman Bolshakov <r.bolshakov@yadro.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-12-06scsi: scsi_debug: Fix buffer size of REPORT ZONES commandShin'ichiro Kawasaki
According to ZBC and SPC specifications, the unit of ALLOCATION LENGTH field of REPORT ZONES command is byte. However, current scsi_debug implementation handles it as number of zones to calculate buffer size to report zones. When the ALLOCATION LENGTH has a large number, this results in too large buffer size and causes memory allocation failure. Fix the failure by handling ALLOCATION LENGTH as byte unit. Link: https://lore.kernel.org/r/20211207010638.124280-1-shinichiro.kawasaki@wdc.com Fixes: f0d1cf9378bd ("scsi: scsi_debug: Add ZBC zone commands") Reviewed-by: Damien Le Moal <damien.lemoal@opensource.wdc.com> Signed-off-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-12-06scsi: qedi: Fix cmd_cleanup_cmpl counter mismatch issueManish Rangankar
When issued LUN reset under heavy I/O we hit the qedi WARN_ON because of a mismatch in firmware I/O cmd cleanup request count and I/O cmd cleanup response count received. The mismatch is because of a race caused by the postfix increment of cmd_cleanup_cmpl. [qedi_clearsq:1295]:18: fatal error, need hard reset, cid=0x0 WARNING: CPU: 48 PID: 110963 at drivers/scsi/qedi/qedi_fw.c:1296 qedi_clearsq+0xa5/0xd0 [qedi] CPU: 48 PID: 110963 Comm: kworker/u130:0 Kdump: loaded Tainted: G W Hardware name: HPE ProLiant DL385 Gen10/ProLiant DL385 Gen10, BIOS A40 04/15/2020 Workqueue: iscsi_conn_cleanup iscsi_cleanup_conn_work_fn [scsi_transport_iscsi] RIP: 0010:qedi_clearsq+0xa5/0xd0 [qedi] RSP: 0018:ffffac2162c7fd98 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff975213c40ab8 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffff9761bf816858 RDI: ffff9761bf816858 RBP: ffff975247018628 R08: 000000000000522c R09: 000000000000005b R10: 0000000000000000 R11: ffffac2162c7fbd8 R12: ffff97522e1b2be8 R13: 0000000000000000 R14: ffff97522e1b2800 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff9761bf800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1a34e3e1a0 CR3: 0000000108bb2000 CR4: 0000000000350ee0 Call Trace: qedi_ep_disconnect+0x533/0x550 [qedi] ? iscsi_dbg_trace+0x63/0x80 [scsi_transport_iscsi] ? _cond_resched+0x15/0x30 ? iscsi_suspend_queue+0x19/0x40 [libiscsi] iscsi_ep_disconnect+0xb0/0x130 [scsi_transport_iscsi] iscsi_cleanup_conn_work_fn+0x82/0x130 [scsi_transport_iscsi] process_one_work+0x1a7/0x360 ? create_worker+0x1a0/0x1a0 worker_thread+0x30/0x390 ? create_worker+0x1a0/0x1a0 kthread+0x116/0x130 ? kthread_flush_work_fn+0x10/0x10 ret_from_fork+0x22/0x40 ---[ end trace 5f1441f59082235c ]--- Link: https://lore.kernel.org/r/20211203095218.5477-1-mrangankar@marvell.com Reviewed-by: Lee Duncan <lduncan@suse.com> Reviewed-by: Mike Christie <michael.christie@oracle.com> Signed-off-by: Manish Rangankar <mrangankar@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-12-04Merge tag 'scsi-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi Pull SCSI fixes from James Bottomley: "Two patches, both in drivers. One is a fix to FC recovery (lpfc) and the other is an enhancement to support the Intel Alder Motherboard with the UFS driver which comes under the -rc exception process for hardware enabling" * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: scsi: ufs: ufs-pci: Add support for Intel ADL scsi: lpfc: Fix non-recovery of remote ports following an unsolicited LOGO
2021-12-02scsi: pm80xx: Do not call scsi_remove_host() in pm8001_alloc()Igor Pylypiv
Calling scsi_remove_host() before scsi_add_host() results in a crash: BUG: kernel NULL pointer dereference, address: 0000000000000108 RIP: 0010:device_del+0x63/0x440 Call Trace: device_unregister+0x17/0x60 scsi_remove_host+0xee/0x2a0 pm8001_pci_probe+0x6ef/0x1b90 [pm80xx] local_pci_probe+0x3f/0x90 We cannot call scsi_remove_host() in pm8001_alloc() because scsi_add_host() has not been called yet at that point in time. Function call tree: pm8001_pci_probe() | `- pm8001_pci_alloc() | | | `- pm8001_alloc() | | | `- scsi_remove_host() | `- scsi_add_host() Link: https://lore.kernel.org/r/20211201041627.1592487-1-ipylypiv@google.com Fixes: 05c6c029a44d ("scsi: pm80xx: Increase number of supported queues") Reviewed-by: Vishakha Channapattan <vishakhavc@google.com> Acked-by: Jack Wang <jinpu.wang@ionos.com> Signed-off-by: Igor Pylypiv <ipylypiv@google.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-11-29scsi: ufs: ufs-pci: Add support for Intel ADLAdrian Hunter
Add PCI ID and callbacks to support Intel Alder Lake. Link: https://lore.kernel.org/r/20211124204218.1784559-1-adrian.hunter@intel.com Cc: stable@vger.kernel.org # v5.15+ Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-11-28Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhostLinus Torvalds
Pull vhost,virtio,vdpa bugfixes from Michael Tsirkin: "Misc fixes all over the place. Revert of virtio used length validation series: the approach taken does not seem to work, breaking too many guests in the process. We'll need to do length validation using some other approach" [ This merge also ends up reverting commit f7a36b03a732 ("vsock/virtio: suppress used length validation"), which came in through the networking tree in the meantime, and was part of that whole used length validation series - Linus ] * tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: vdpa_sim: avoid putting an uninitialized iova_domain vhost-vdpa: clean irqs before reseting vdpa device virtio-blk: modify the value type of num in virtio_queue_rq() vhost/vsock: cleanup removing `len` variable vhost/vsock: fix incorrect used length reported to the guest Revert "virtio_ring: validate used buffer length" Revert "virtio-net: don't let virtio core to validate used length" Revert "virtio-blk: don't let virtio core to validate used length" Revert "virtio-scsi: don't let virtio core to validate used buffer length"
2021-11-24Revert "virtio-scsi: don't let virtio core to validate used buffer length"Michael S. Tsirkin
This reverts commit c57911ebfbfe745cb95da2bcf547c5bae000590f. Attempts to validate length in the core did not work out. We'll drop them for now, so revert the dependent changes in drivers. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2021-11-23scsi: lpfc: Fix non-recovery of remote ports following an unsolicited LOGOJames Smart
A commit introduced formal regstration of all Fabric nodes to the SCSI transport as well as REG/UNREG RPI mailbox requests. The commit introduced the NLP_RELEASE_RPI flag for rports set in the lpfc_cmpl_els_logo_acc() routine to help clean up the RPIs. This new code caused the driver to release the RPI value used for the remote port and marked the RPI invalid. When the driver later attempted to re-login, it would use the invalid RPI and the adapter rejected the PLOGI request. As no login occurred, the devloss timer on the rport expired and connectivity was lost. This patch corrects the code by removing the snippet that requests the rpi to be unregistered. This change only occurs on a node that is already marked to be rediscovered. This puts the code back to its original behavior, preserving the already-assigned rpi value (registered or not) which can be used on the re-login attempts. Link: https://lore.kernel.org/r/20211123165646.62740-1-jsmart2021@gmail.com Fixes: fe83e3b9b422 ("scsi: lpfc: Fix node handling for Fabric Controller and Domain Controller") Cc: <stable@vger.kernel.org> # v5.14+ Co-developed-by: Paul Ely <paul.ely@broadcom.com> Signed-off-by: Paul Ely <paul.ely@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-11-22scsi: scsi_debug: Zero clear zones at reset write pointerShin'ichiro Kawasaki
When a reset is requested the position of the write pointer is updated but the data in the corresponding zone is not cleared. Instead scsi_debug returns any data written before the write pointer was reset. This is an error and prevents using scsi_debug for stale page cache testing of the BLKRESETZONE ioctl. Zero written data in the zone when resetting the write pointer. Link: https://lore.kernel.org/r/20211122061223.298890-1-shinichiro.kawasaki@wdc.com Fixes: f0d1cf9378bd ("scsi: scsi_debug: Add ZBC zone commands") Reviewed-by: Damien Le Moal <damien.lemoal@opensource.wdc.com> Acked-by: Douglas Gilbert <dgilbert@interlog.com> Signed-off-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-11-22scsi: core: sysfs: Fix setting device state to SDEV_RUNNINGMike Christie
This fixes an issue added in commit 4edd8cd4e86d ("scsi: core: sysfs: Fix hang when device state is set via sysfs") where if userspace is requesting to set the device state to SDEV_RUNNING when the state is already SDEV_RUNNING, we return -EINVAL instead of count. The commmit above set ret to count for this case, when it should have set it to 0. Link: https://lore.kernel.org/r/20211120164917.4924-1-michael.christie@oracle.com Fixes: 4edd8cd4e86d ("scsi: core: sysfs: Fix hang when device state is set via sysfs") Reviewed-by: Lee Duncan <lduncan@suse.com> Signed-off-by: Mike Christie <michael.christie@oracle.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-11-22scsi: scsi_debug: Sanity check block descriptor length in resp_mode_select()George Kennedy
In resp_mode_select() sanity check the block descriptor len to avoid UAF. BUG: KASAN: use-after-free in resp_mode_select+0xa4c/0xb40 drivers/scsi/scsi_debug.c:2509 Read of size 1 at addr ffff888026670f50 by task scsicmd/15032 CPU: 1 PID: 15032 Comm: scsicmd Not tainted 5.15.0-01d0625 #15 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Call Trace: <TASK> dump_stack_lvl+0x89/0xb5 lib/dump_stack.c:107 print_address_description.constprop.9+0x28/0x160 mm/kasan/report.c:257 kasan_report.cold.14+0x7d/0x117 mm/kasan/report.c:443 __asan_report_load1_noabort+0x14/0x20 mm/kasan/report_generic.c:306 resp_mode_select+0xa4c/0xb40 drivers/scsi/scsi_debug.c:2509 schedule_resp+0x4af/0x1a10 drivers/scsi/scsi_debug.c:5483 scsi_debug_queuecommand+0x8c9/0x1e70 drivers/scsi/scsi_debug.c:7537 scsi_queue_rq+0x16b4/0x2d10 drivers/scsi/scsi_lib.c:1521 blk_mq_dispatch_rq_list+0xb9b/0x2700 block/blk-mq.c:1640 __blk_mq_sched_dispatch_requests+0x28f/0x590 block/blk-mq-sched.c:325 blk_mq_sched_dispatch_requests+0x105/0x190 block/blk-mq-sched.c:358 __blk_mq_run_hw_queue+0xe5/0x150 block/blk-mq.c:1762 __blk_mq_delay_run_hw_queue+0x4f8/0x5c0 block/blk-mq.c:1839 blk_mq_run_hw_queue+0x18d/0x350 block/blk-mq.c:1891 blk_mq_sched_insert_request+0x3db/0x4e0 block/blk-mq-sched.c:474 blk_execute_rq_nowait+0x16b/0x1c0 block/blk-exec.c:63 sg_common_write.isra.18+0xeb3/0x2000 drivers/scsi/sg.c:837 sg_new_write.isra.19+0x570/0x8c0 drivers/scsi/sg.c:775 sg_ioctl_common+0x14d6/0x2710 drivers/scsi/sg.c:941 sg_ioctl+0xa2/0x180 drivers/scsi/sg.c:1166 __x64_sys_ioctl+0x19d/0x220 fs/ioctl.c:52 do_syscall_64+0x3a/0x80 arch/x86/entry/common.c:50 entry_SYSCALL_64_after_hwframe+0x44/0xae arch/x86/entry/entry_64.S:113 Link: https://lore.kernel.org/r/1637262208-28850-1-git-send-email-george.kennedy@oracle.com Reported-by: syzkaller <syzkaller@googlegroups.com> Acked-by: Douglas Gilbert <dgilbert@interlog.com> Signed-off-by: George Kennedy <george.kennedy@oracle.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-11-18scsi: mpt3sas: Fix incorrect system timestampSreekanth Reddy
For updating the IOC firmware's timestamp with system timestamp, the driver issues the Mpi26IoUnitControlRequest message. While framing the Mpi26IoUnitControlRequest, the driver should copy the lower 32 bits of the current timestamp into IOCParameterValue field and the higher 32 bits into Reserved7 field. Link: https://lore.kernel.org/r/20211117123215.25487-1-sreekanth.reddy@broadcom.com Fixes: f98790c00375 ("scsi: mpt3sas: Sync time periodically between driver and firmware") Signed-off-by: Sreekanth Reddy <sreekanth.reddy@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-11-18scsi: mpt3sas: Fix system going into read-only modeSreekanth Reddy
While determining the SAS address of a drive, the driver checks whether the handle number is less than the HBA phy count or not. If the handle number is less than the HBA phy count then driver assumes that this handle belongs to HBA and hence it assigns the HBA SAS address. During IOC firmware downgrade operation, if the number of HBA phys is reduced and the OS drive's device handle drops below the phy count while determining the drive's SAS address, the driver ends up using the HBA's SAS address. This leads to a mismatch of drive's SAS address and hence the driver unregisters the OS drive and the system goes into read-only mode. Update the IOC's num_phys to the HBA phy count provided by actual loaded firmware. Link: https://lore.kernel.org/r/20211117105058.3505-1-sreekanth.reddy@broadcom.com Fixes: a5e99fda0172 ("scsi: mpt3sas: Update hba_port objects after host reset") Signed-off-by: Sreekanth Reddy <sreekanth.reddy@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-11-18scsi: mpt3sas: Fix kernel panic during drive powercycle testSreekanth Reddy
While looping over shost's sdev list it is possible that one of the drives is getting removed and its sas_target object is freed but its sdev object remains intact. Consequently, a kernel panic can occur while the driver is trying to access the sas_address field of sas_target object without also checking the sas_target object for NULL. Link: https://lore.kernel.org/r/20211117104909.2069-1-sreekanth.reddy@broadcom.com Fixes: f92363d12359 ("[SCSI] mpt3sas: add new driver supporting 12GB SAS") Signed-off-by: Sreekanth Reddy <sreekanth.reddy@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-11-18scsi: ufs: ufs-mediatek: Add put_device() after of_find_device_by_node()Ye Guojin
This was found by coccicheck: ./drivers/scsi/ufs/ufs-mediatek.c, 211, 1-7, ERROR missing put_device; call of_find_device_by_node on line 1185, but without a corresponding object release within this function. Link: https://lore.kernel.org/r/20211110105133.150171-1-ye.guojin@zte.com.cn Reported-by: Zeal Robot <zealci@zte.com.cn> Reviewed-by: Peter Wang <peter.wang@mediatek.com> Signed-off-by: Ye Guojin <ye.guojin@zte.com.cn> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-11-18scsi: scsi_debug: Fix type in min_t to avoid stack OOBGeorge Kennedy
Change min_t() to use type "u32" instead of type "int" to avoid stack out of bounds. With min_t() type "int" the values get sign extended and the larger value gets used causing stack out of bounds. BUG: KASAN: stack-out-of-bounds in memcpy include/linux/fortify-string.h:191 [inline] BUG: KASAN: stack-out-of-bounds in sg_copy_buffer+0x1de/0x240 lib/scatterlist.c:976 Read of size 127 at addr ffff888072607128 by task syz-executor.7/18707 CPU: 1 PID: 18707 Comm: syz-executor.7 Not tainted 5.15.0-syzk #1 Hardware name: Red Hat KVM, BIOS 1.13.0-2 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x89/0xb5 lib/dump_stack.c:106 print_address_description.constprop.9+0x28/0x160 mm/kasan/report.c:256 __kasan_report mm/kasan/report.c:442 [inline] kasan_report.cold.14+0x7d/0x117 mm/kasan/report.c:459 check_region_inline mm/kasan/generic.c:183 [inline] kasan_check_range+0x1a3/0x210 mm/kasan/generic.c:189 memcpy+0x23/0x60 mm/kasan/shadow.c:65 memcpy include/linux/fortify-string.h:191 [inline] sg_copy_buffer+0x1de/0x240 lib/scatterlist.c:976 sg_copy_from_buffer+0x33/0x40 lib/scatterlist.c:1000 fill_from_dev_buffer.part.34+0x82/0x130 drivers/scsi/scsi_debug.c:1162 fill_from_dev_buffer drivers/scsi/scsi_debug.c:1888 [inline] resp_readcap16+0x365/0x3b0 drivers/scsi/scsi_debug.c:1887 schedule_resp+0x4d8/0x1a70 drivers/scsi/scsi_debug.c:5478 scsi_debug_queuecommand+0x8c9/0x1ec0 drivers/scsi/scsi_debug.c:7533 scsi_dispatch_cmd drivers/scsi/scsi_lib.c:1520 [inline] scsi_queue_rq+0x16b0/0x2d40 drivers/scsi/scsi_lib.c:1699 blk_mq_dispatch_rq_list+0xb9b/0x2700 block/blk-mq.c:1639 __blk_mq_sched_dispatch_requests+0x28f/0x590 block/blk-mq-sched.c:325 blk_mq_sched_dispatch_requests+0x105/0x190 block/blk-mq-sched.c:358 __blk_mq_run_hw_queue+0xe5/0x150 block/blk-mq.c:1761 __blk_mq_delay_run_hw_queue+0x4f8/0x5c0 block/blk-mq.c:1838 blk_mq_run_hw_queue+0x18d/0x350 block/blk-mq.c:1891 blk_mq_sched_insert_request+0x3db/0x4e0 block/blk-mq-sched.c:474 blk_execute_rq_nowait+0x16b/0x1c0 block/blk-exec.c:62 sg_common_write.isra.18+0xeb3/0x2000 drivers/scsi/sg.c:836 sg_new_write.isra.19+0x570/0x8c0 drivers/scsi/sg.c:774 sg_ioctl_common+0x14d6/0x2710 drivers/scsi/sg.c:939 sg_ioctl+0xa2/0x180 drivers/scsi/sg.c:1165 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl fs/ioctl.c:860 [inline] __x64_sys_ioctl+0x19d/0x220 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3a/0x80 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae Link: https://lore.kernel.org/r/1636484247-21254-1-git-send-email-george.kennedy@oracle.com Reported-by: syzkaller <syzkaller@googlegroups.com> Acked-by: Douglas Gilbert <dgilbert@interlog.com> Signed-off-by: George Kennedy <george.kennedy@oracle.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-11-18scsi: qla2xxx: edif: Fix off by one bug in qla_edif_app_getfcinfo()Dan Carpenter
The > comparison needs to be >= to prevent accessing one element beyond the end of the app_reply->ports[] array. Link: https://lore.kernel.org/r/20211109115219.GE16587@kili Fixes: 7878f22a2e03 ("scsi: qla2xxx: edif: Add getfcinfo and statistic bsgs") Reviewed-by: Ewan D. Milne <emilne@redhat.com> Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-11-18scsi: ufs: ufshpb: Fix warning in ufshpb_set_hpb_read_to_upiu()Bean Huo
Fix the following sparse warnings in ufshpb_set_hpb_read_to_upiu(): sparse warnings: (new ones prefixed by >>) drivers/scsi/ufs/ufshpb.c:335:27: sparse: sparse: cast from restricted __be64 drivers/scsi/ufs/ufshpb.c:335:25: sparse: expected restricted __be64 [usertype] ppn_tmp drivers/scsi/ufs/ufshpb.c:335:25: sparse: got unsigned long long [usertype] Link: https://lore.kernel.org/r/20211111222452.384089-1-huobean@gmail.com Reported-by: kernel test robot <lkp@intel.com> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Bean Huo <beanhuo@micron.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-11-16scsi: qla2xxx: Fix mailbox direction flags in qla2xxx_get_adapter_id()Ewan D. Milne
The SCM changes set the flags in mcp->out_mb instead of mcp->in_mb so the data was not actually being read into the mcp->mb[] array from the adapter. Link: https://lore.kernel.org/r/20211108183012.13895-1-emilne@redhat.com Fixes: 9f2475fe7406 ("scsi: qla2xxx: SAN congestion management implementation") Cc: stable@vger.kernel.org Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com> Reviewed-by: Arun Easi <aeasi@marvell.com> Signed-off-by: Ewan D. Milne <emilne@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-11-16scsi: ufs: core: Fix another task management completion raceAdrian Hunter
hba->outstanding_tasks, which is read under host_lock spinlock, tells the interrupt handler what task management tags are in use by the driver. The doorbell register bits indicate which tags are in use by the hardware. A doorbell bit that is 0 is because the bit has yet to be set by the driver, or because the task is complete. It is only possible to disambiguate the 2 cases, if reading/writing the doorbell register is synchronized with reading/writing hba->outstanding_tasks. For that reason, reading REG_UTP_TASK_REQ_DOOR_BELL must be done under spinlock. Link: https://lore.kernel.org/r/20211108064815.569494-3-adrian.hunter@intel.com Fixes: f5ef336fd2e4 ("scsi: ufs: core: Fix task management completion") Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-11-16scsi: ufs: core: Fix task management completion timeout raceAdrian Hunter
__ufshcd_issue_tm_cmd() clears req->end_io_data after timing out, which races with the completion function ufshcd_tmc_handler() which expects req->end_io_data to have a value. Note __ufshcd_issue_tm_cmd() and ufshcd_tmc_handler() are already synchronized using hba->tmf_rqs and hba->outstanding_tasks under the host_lock spinlock. It is also not necessary (nor typical) to clear req->end_io_data because the block layer does it before allocating out requests e.g. via blk_get_request(). So fix by not clearing it. Link: https://lore.kernel.org/r/20211108064815.569494-2-adrian.hunter@intel.com Fixes: f5ef336fd2e4 ("scsi: ufs: core: Fix task management completion") Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-11-16scsi: core: sysfs: Fix hang when device state is set via sysfsMike Christie
This fixes a regression added with: commit f0f82e2476f6 ("scsi: core: Fix capacity set to zero after offlinining device") The problem is that after iSCSI recovery, iscsid will call into the kernel to set the dev's state to running, and with that patch we now call scsi_rescan_device() with the state_mutex held. If the SCSI error handler thread is just starting to test the device in scsi_send_eh_cmnd() then it's going to try to grab the state_mutex. We are then stuck, because when scsi_rescan_device() tries to send its I/O scsi_queue_rq() calls -> scsi_host_queue_ready() -> scsi_host_in_recovery() which will return true (the host state is still in recovery) and I/O will just be requeued. scsi_send_eh_cmnd() will then never be able to grab the state_mutex to finish error handling. To prevent the deadlock move the rescan-related code to after we drop the state_mutex. This also adds a check for if we are already in the running state. This prevents extra scans and helps the iscsid case where if the transport class has already onlined the device during its recovery process then we don't need userspace to do it again plus possibly block that daemon. Link: https://lore.kernel.org/r/20211105221048.6541-3-michael.christie@oracle.com Fixes: f0f82e2476f6 ("scsi: core: Fix capacity set to zero after offlinining device") Cc: Bart Van Assche <bvanassche@acm.org> Cc: lijinlin <lijinlin3@huawei.com> Cc: Wu Bo <wubo40@huawei.com> Reviewed-by: Lee Duncan <lduncan@suse.com> Reviewed-by: Wu Bo <wubo40@huawei.com> Signed-off-by: Mike Christie <michael.christie@oracle.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-11-16scsi: iscsi: Unblock session then wake up error handlerMike Christie
We can race where iscsi_session_recovery_timedout() has woken up the error handler thread and it's now setting the devices to offline, and session_recovery_timedout()'s call to scsi_target_unblock() is also trying to set the device's state to transport-offline. We can then get a mix of states. For the case where we can't relogin we want the devices to be in transport-offline so when we have repaired the connection __iscsi_unblock_session() can set the state back to running. Set the device state then call into libiscsi to wake up the error handler. Link: https://lore.kernel.org/r/20211105221048.6541-2-michael.christie@oracle.com Reviewed-by: Lee Duncan <lduncan@suse.com> Signed-off-by: Mike Christie <michael.christie@oracle.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-11-16scsi: ufs: core: Improve SCSI abort handlingBart Van Assche
The following has been observed on a test setup: WARNING: CPU: 4 PID: 250 at drivers/scsi/ufs/ufshcd.c:2737 ufshcd_queuecommand+0x468/0x65c Call trace: ufshcd_queuecommand+0x468/0x65c scsi_send_eh_cmnd+0x224/0x6a0 scsi_eh_test_devices+0x248/0x418 scsi_eh_ready_devs+0xc34/0xe58 scsi_error_handler+0x204/0x80c kthread+0x150/0x1b4 ret_from_fork+0x10/0x30 That warning is triggered by the following statement: WARN_ON(lrbp->cmd); Fix this warning by clearing lrbp->cmd from the abort handler. Link: https://lore.kernel.org/r/20211104181059.4129537-1-bvanassche@acm.org Fixes: 7a3e97b0dc4b ("[SCSI] ufshcd: UFS Host controller driver") Reviewed-by: Bean Huo <beanhuo@micron.com> Reviewed-by: Stanley Chu <stanley.chu@mediatek.com> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-11-12Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds
Pull more SCSI updates from James Bottomley: "This series is all the stragglers that didn't quite make the first merge window pull. It's mostly minor updates and bug fixes of merge window code but it also has two driver updates: ufs and qla2xxx" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (46 commits) scsi: scsi_debug: Don't call kcalloc() if size arg is zero scsi: core: Remove command size deduction from scsi_setup_scsi_cmnd() scsi: scsi_ioctl: Validate command size scsi: ufs: ufshpb: Properly handle max-single-cmd scsi: core: Avoid leaving shost->last_reset with stale value if EH does not run scsi: bsg: Fix errno when scsi_bsg_register_queue() fails scsi: sr: Remove duplicate assignment scsi: ufs: ufs-exynos: Introduce ExynosAuto v9 virtual host scsi: ufs: ufs-exynos: Multi-host configuration for ExynosAuto v9 scsi: ufs: ufs-exynos: Support ExynosAuto v9 UFS scsi: ufs: ufs-exynos: Add pre/post_hce_enable drv callbacks scsi: ufs: ufs-exynos: Factor out priv data init scsi: ufs: ufs-exynos: Add EXYNOS_UFS_OPT_SKIP_CONFIG_PHY_ATTR option scsi: ufs: ufs-exynos: Support custom version of ufs_hba_variant_ops scsi: ufs: ufs-exynos: Add setup_clocks callback scsi: ufs: ufs-exynos: Add refclkout_stop control scsi: ufs: ufs-exynos: Simplify drv_data retrieval scsi: ufs: ufs-exynos: Change pclk available max value scsi: ufs: Add quirk to enable host controller without PH configuration scsi: ufs: Add quirk to handle broken UIC command ...
2021-11-09Merge tag 'for-5.16/block-2021-11-09' of git://git.kernel.dk/linux-blockLinus Torvalds
Pull block fixes from Jens Axboe: - Set of fixes for the batched tag allocation (Ming, me) - add_disk() error handling fix (Luis) - Nested queue quiesce fixes (Ming) - Shared tags init error handling fix (Ye) - Misc cleanups (Jean, Ming, me) * tag 'for-5.16/block-2021-11-09' of git://git.kernel.dk/linux-block: nvme: wait until quiesce is done scsi: make sure that request queue queiesce and unquiesce balanced scsi: avoid to quiesce sdev->request_queue two times blk-mq: add one API for waiting until quiesce is done blk-mq: don't free tags if the tag_set is used by other device in queue initialztion block: fix device_add_disk() kobject_create_and_add() error handling block: ensure cached plug request matches the current queue block: move queue enter logic into blk_mq_submit_bio() block: make bio_queue_enter() fast-path available inline block: split request allocation components into helpers block: have plug stored requests hold references to the queue blk-mq: update hctx->nr_active in blk_mq_end_request_batch() blk-mq: add RQF_ELV debug entry blk-mq: only try to run plug merge if request has same queue with incoming bio block: move RQF_ELV setting into allocators dm: don't stop request queue after the dm device is suspended block: replace always false argument with 'false' block: assign correct tag before doing prefetch of request blk-mq: fix redundant check of !e expression
2021-11-09scsi: make sure that request queue queiesce and unquiesce balancedMing Lei
For fixing queue quiesce race between driver and block layer(elevator switch, update nr_requests, ...), we need to support concurrent quiesce and unquiesce, which requires the two call balanced. It isn't easy to audit that in all scsi drivers, especially the two may be called from different contexts, so do it in scsi core with one per-device atomic variable to balance quiesce and unquiesce. Reported-by: Yi Zhang <yi.zhang@redhat.com> Fixes: e70feb8b3e68 ("blk-mq: support concurrent queue quiesce/unquiesce") Signed-off-by: Ming Lei <ming.lei@redhat.com> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Link: https://lore.kernel.org/r/20211109071144.181581-4-ming.lei@redhat.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-11-09scsi: avoid to quiesce sdev->request_queue two timesMing Lei
For fixing queue quiesce race between driver and block layer(elevator switch, update nr_requests, ...), we need to support concurrent quiesce and unquiesce, which requires the two to be balanced. blk_mq_quiesce_queue() calls blk_mq_quiesce_queue_nowait() for updating quiesce depth and marking the flag, then scsi_internal_device_block() calls blk_mq_quiesce_queue_nowait() two times actually. Fix the double quiesce and keep quiesce and unquiesce balanced. Reported-by: Yi Zhang <yi.zhang@redhat.com> Fixes: e70feb8b3e68 ("blk-mq: support concurrent queue quiesce/unquiesce") Signed-off-by: Ming Lei <ming.lei@redhat.com> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Link: https://lore.kernel.org/r/20211109071144.181581-3-ming.lei@redhat.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-11-05Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds
Pull SCSI updates from James Bottomley: "This consists of the usual driver updates (ufs, smartpqi, lpfc, target, megaraid_sas, hisi_sas, qla2xxx) and minor updates and bug fixes. Notable core changes are the removal of scsi->tag which caused some churn in obsolete drivers and a sweep through all drivers to call scsi_done() directly instead of scsi->done() which removes a pointer indirection from the hot path and a move to register core sysfs files earlier, which means they're available to KOBJ_ADD processing, which necessitates switching all drivers to using attribute groups" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (279 commits) scsi: lpfc: Update lpfc version to 14.0.0.3 scsi: lpfc: Allow fabric node recovery if recovery is in progress before devloss scsi: lpfc: Fix link down processing to address NULL pointer dereference scsi: lpfc: Allow PLOGI retry if previous PLOGI was aborted scsi: lpfc: Fix use-after-free in lpfc_unreg_rpi() routine scsi: lpfc: Correct sysfs reporting of loop support after SFP status change scsi: lpfc: Wait for successful restart of SLI3 adapter during host sg_reset scsi: lpfc: Revert LOG_TRACE_EVENT back to LOG_INIT prior to driver_resource_setup() scsi: ufs: ufshcd-pltfrm: Fix memory leak due to probe defer scsi: ufs: mediatek: Avoid sched_clock() misuse scsi: mpt3sas: Make mpt3sas_dev_attrs static scsi: scsi_transport_sas: Add 22.5 Gbps link rate definitions scsi: target: core: Stop using bdevname() scsi: aha1542: Use memcpy_{from,to}_bvec() scsi: sr: Add error handling support for add_disk() scsi: sd: Add error handling support for add_disk() scsi: target: Perform ALUA group changes in one step scsi: target: Replace lun_tg_pt_gp_lock with rcu in I/O path scsi: target: Fix alua_tg_pt_gps_count tracking scsi: target: Fix ordered tag handling ...
2021-11-04scsi: scsi_debug: Don't call kcalloc() if size arg is zeroGeorge Kennedy
If the size arg to kcalloc() is zero, it returns ZERO_SIZE_PTR. Because of that, for a following NULL pointer check to work on the returned pointer, kcalloc() must not be called with the size arg equal to zero. Return early without error before the kcalloc() call if size arg is zero. BUG: KASAN: null-ptr-deref in memcpy include/linux/fortify-string.h:191 [inline] BUG: KASAN: null-ptr-deref in sg_copy_buffer+0x138/0x240 lib/scatterlist.c:974 Write of size 4 at addr 0000000000000010 by task syz-executor.1/22789 CPU: 1 PID: 22789 Comm: syz-executor.1 Not tainted 5.15.0-syzk #1 Hardware name: Red Hat KVM, BIOS 1.13.0-2 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x89/0xb5 lib/dump_stack.c:106 __kasan_report mm/kasan/report.c:446 [inline] kasan_report.cold.14+0x112/0x117 mm/kasan/report.c:459 check_region_inline mm/kasan/generic.c:183 [inline] kasan_check_range+0x1a3/0x210 mm/kasan/generic.c:189 memcpy+0x3b/0x60 mm/kasan/shadow.c:66 memcpy include/linux/fortify-string.h:191 [inline] sg_copy_buffer+0x138/0x240 lib/scatterlist.c:974 do_dout_fetch drivers/scsi/scsi_debug.c:2954 [inline] do_dout_fetch drivers/scsi/scsi_debug.c:2946 [inline] resp_verify+0x49e/0x930 drivers/scsi/scsi_debug.c:4276 schedule_resp+0x4d8/0x1a70 drivers/scsi/scsi_debug.c:5478 scsi_debug_queuecommand+0x8c9/0x1ec0 drivers/scsi/scsi_debug.c:7533 scsi_dispatch_cmd drivers/scsi/scsi_lib.c:1520 [inline] scsi_queue_rq+0x16b0/0x2d40 drivers/scsi/scsi_lib.c:1699 blk_mq_dispatch_rq_list+0xb9b/0x2700 block/blk-mq.c:1639 __blk_mq_sched_dispatch_requests+0x28f/0x590 block/blk-mq-sched.c:325 blk_mq_sched_dispatch_requests+0x105/0x190 block/blk-mq-sched.c:358 __blk_mq_run_hw_queue+0xe5/0x150 block/blk-mq.c:1761 __blk_mq_delay_run_hw_queue+0x4f8/0x5c0 block/blk-mq.c:1838 blk_mq_run_hw_queue+0x18d/0x350 block/blk-mq.c:1891 blk_mq_sched_insert_request+0x3db/0x4e0 block/blk-mq-sched.c:474 blk_execute_rq_nowait+0x16b/0x1c0 block/blk-exec.c:62 blk_execute_rq+0xdb/0x360 block/blk-exec.c:102 sg_scsi_ioctl drivers/scsi/scsi_ioctl.c:621 [inline] scsi_ioctl+0x8bb/0x15c0 drivers/scsi/scsi_ioctl.c:930 sg_ioctl_common+0x172d/0x2710 drivers/scsi/sg.c:1112 sg_ioctl+0xa2/0x180 drivers/scsi/sg.c:1165 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl fs/ioctl.c:860 [inline] __x64_sys_ioctl+0x19d/0x220 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3a/0x80 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae Link: https://lore.kernel.org/r/1636056397-13151-1-git-send-email-george.kennedy@oracle.com Reported-by: syzkaller <syzkaller@googlegroups.com> Acked-by: Douglas Gilbert <dgilbert@interlog.com> Signed-off-by: George Kennedy <george.kennedy@oracle.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-11-04scsi: core: Remove command size deduction from scsi_setup_scsi_cmnd()Tadeusz Struk
No need to deduce command size in scsi_setup_scsi_cmnd() anymore as appropriate checks have been added to scsi_fill_sghdr_rq() function and the cmd_len should never be zero here. The code to do that wasn't correct anyway, as it used uninitialized cmd->cmnd, which caused a null-ptr-deref if the command size was zero as in the trace below. Fix this by removing the unneeded code. KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 0 PID: 1822 Comm: repro Not tainted 5.15.0 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-4.fc34 04/01/2014 Call Trace: blk_mq_dispatch_rq_list+0x7c7/0x12d0 __blk_mq_sched_dispatch_requests+0x244/0x380 blk_mq_sched_dispatch_requests+0xf0/0x160 __blk_mq_run_hw_queue+0xe8/0x160 __blk_mq_delay_run_hw_queue+0x252/0x5d0 blk_mq_run_hw_queue+0x1dd/0x3b0 blk_mq_sched_insert_request+0x1ff/0x3e0 blk_execute_rq_nowait+0x173/0x1e0 blk_execute_rq+0x15c/0x540 sg_io+0x97c/0x1370 scsi_ioctl+0xe16/0x28e0 sd_ioctl+0x134/0x170 blkdev_ioctl+0x362/0x6e0 block_ioctl+0xb0/0xf0 vfs_ioctl+0xa7/0xf0 do_syscall_64+0x3d/0xb0 entry_SYSCALL_64_after_hwframe+0x44/0xae ---[ end trace 8b086e334adef6d2 ]--- Kernel panic - not syncing: Fatal exception Link: https://lore.kernel.org/r/20211103170659.22151-2-tadeusz.struk@linaro.org Fixes: 2ceda20f0a99 ("scsi: core: Move command size detection out of the fast path") Cc: Bart Van Assche <bvanassche@acm.org> Cc: Christoph Hellwig <hch@lst.de> Cc: James E.J. Bottomley <jejb@linux.ibm.com> Cc: Martin K. Petersen <martin.petersen@oracle.com> Cc: <linux-scsi@vger.kernel.org> Cc: <linux-kernel@vger.kernel.org> Cc: <stable@vger.kernel.org> # 5.15, 5.14, 5.10 Reported-by: syzbot+5516b30f5401d4dcbcae@syzkaller.appspotmail.com Reviewed-by: Bart Van Assche <bvanassche@acm.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Tadeusz Struk <tadeusz.struk@linaro.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-11-03scsi: scsi_ioctl: Validate command sizeTadeusz Struk
Need to make sure the command size is valid before copying the command from user space. Link: https://lore.kernel.org/r/20211103170659.22151-1-tadeusz.struk@linaro.org Cc: Bart Van Assche <bvanassche@acm.org> Cc: Christoph Hellwig <hch@lst.de> Cc: James E.J. Bottomley <jejb@linux.ibm.com> Cc: Martin K. Petersen <martin.petersen@oracle.com> Cc: <linux-scsi@vger.kernel.org> Cc: <linux-kernel@vger.kernel.org> Cc: <stable@vger.kernel.org> # 5.15, 5.14, 5.10 Signed-off-by: Tadeusz Struk <tadeusz.struk@linaro.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-11-03scsi: ufs: ufshpb: Properly handle max-single-cmdAvri Altman
The spec recommends that for transfer length larger than the max-single-cmd attribute (bMAX_DATA_SIZE_FOR_HPB_SINGLE_CMD) it is possible to couple pre-requests with the HPB-READ command. Being a recommendation, using pre-requests can be perceived merely as a means of optimization. A common practice was to send pre-requests for chunks within some interval, and leave the READ10 untouched if larger. Now that the pre-request flows have been removed, all the commands are single commands. Properly handle this attribute and do not send HPB-READ for transfer lengths larger than max-single-cmd. [mkp: resolve conflict] Fixes: 09d9e4d04187 ("scsi: ufs: ufshpb: Remove HPB2.0 flows") Link: https://lore.kernel.org/r/20211031123654.17719-1-avri.altman@wdc.com Reviewed-by: Daejun Park <daejun7.park@samsung.com> Signed-off-by: Avri Altman <avri.altman@wdc.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-11-03Merge branch '5.15/scsi-fixes' into 5.16/scsi-queueMartin K. Petersen
The partial UFS revert in 5.15 is needed for some additional fixes in the 5.16 SCSI tree. Merge the fixes branch. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-11-03scsi: core: Avoid leaving shost->last_reset with stale value if EH does not runEwan D. Milne
The changes to issue the abort from the scmd->abort_work instead of the EH thread introduced a problem if eh_deadline is used. If aborting the command(s) is successful, and there are never any scmds added to the shost->eh_cmd_q, there is no code path which will reset the ->last_reset value back to zero. The effect of this is that after a successful abort with no EH thread activity, a subsequent timeout, perhaps a long time later, might immediately be considered past a user-set eh_deadline time, and the host will be reset with no attempt at recovery. Fix this by resetting ->last_reset back to zero in scmd_eh_abort_handler() if it is determined that the EH thread will not run to do this. Thanks to Gopinath Marappan for investigating this problem. Link: https://lore.kernel.org/r/20211029194311.17504-2-emilne@redhat.com Fixes: e494f6a72839 ("[SCSI] improved eh timeout handler") Cc: stable@vger.kernel.org Signed-off-by: Ewan D. Milne <emilne@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-11-03scsi: bsg: Fix errno when scsi_bsg_register_queue() failsJackie Liu
When the value of error is printed, it will always be 0. We should print the correct error code when scsi_bsg_register_queue() fails. Link: https://lore.kernel.org/r/20211022010201.426746-1-liu.yun@linux.dev Fixes: ead09dd3aed5 ("scsi: bsg: Simplify device registration") Cc: Jens Axboe <axboe@kernel.dk> Cc: Christoph Hellwig <hch@lst.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jackie Liu <liuyun01@kylinos.cn> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-11-03Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhostLinus Torvalds
Pull virtio updates from Michael Tsirkin: "vhost and virtio fixes and features: - Hardening work by Jason - vdpa driver for Alibaba ENI - Performance tweaks for virtio blk - virtio rng rework using an internal buffer - mac/mtu programming for mlx5 vdpa - Misc fixes, cleanups" * tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (45 commits) vdpa/mlx5: Forward only packets with allowed MAC address vdpa/mlx5: Support configuration of MAC vdpa/mlx5: Fix clearing of VIRTIO_NET_F_MAC feature bit vdpa_sim_net: Enable user to set mac address and mtu vdpa: Enable user to set mac and mtu of vdpa device vdpa: Use kernel coding style for structure comments vdpa: Introduce query of device config layout vdpa: Introduce and use vdpa device get, set config helpers virtio-scsi: don't let virtio core to validate used buffer length virtio-blk: don't let virtio core to validate used length virtio-net: don't let virtio core to validate used length virtio_ring: validate used buffer length virtio_blk: correct types for status handling virtio_blk: allow 0 as num_request_queues i2c: virtio: Add support for zero-length requests virtio-blk: fixup coccinelle warnings virtio_ring: fix typos in vring_desc_extra virtio-pci: harden INTX interrupts virtio_pci: harden MSI-X interrupts virtio_config: introduce a new .enable_cbs method ...
2021-11-02Merge tag 'net-next-for-5.16' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next Pull networking updates from Jakub Kicinski: "Core: - Remove socket skb caches - Add a SO_RESERVE_MEM socket op to forward allocate buffer space and avoid memory accounting overhead on each message sent - Introduce managed neighbor entries - added by control plane and resolved by the kernel for use in acceleration paths (BPF / XDP right now, HW offload users will benefit as well) - Make neighbor eviction on link down controllable by userspace to work around WiFi networks with bad roaming implementations - vrf: Rework interaction with netfilter/conntrack - fq_codel: implement L4S style ce_threshold_ect1 marking - sch: Eliminate unnecessary RCU waits in mini_qdisc_pair_swap() BPF: - Add support for new btf kind BTF_KIND_TAG, arbitrary type tagging as implemented in LLVM14 - Introduce bpf_get_branch_snapshot() to capture Last Branch Records - Implement variadic trace_printk helper - Add a new Bloomfilter map type - Track <8-byte scalar spill and refill - Access hw timestamp through BPF's __sk_buff - Disallow unprivileged BPF by default - Document BPF licensing Netfilter: - Introduce egress hook for looking at raw outgoing packets - Allow matching on and modifying inner headers / payload data - Add NFT_META_IFTYPE to match on the interface type either from ingress or egress Protocols: - Multi-Path TCP: - increase default max additional subflows to 2 - rework forward memory allocation - add getsockopts: MPTCP_INFO, MPTCP_TCPINFO, MPTCP_SUBFLOW_ADDRS - MCTP flow support allowing lower layer drivers to configure msg muxing as needed - Automatic Multicast Tunneling (AMT) driver based on RFC7450 - HSR support the redbox supervision frames (IEC-62439-3:2018) - Support for the ip6ip6 encapsulation of IOAM - Netlink interface for CAN-FD's Transmitter Delay Compensation - Support SMC-Rv2 eliminating the current same-subnet restriction, by exploiting the UDP encapsulation feature of RoCE adapters - TLS: add SM4 GCM/CCM crypto support - Bluetooth: initial support for link quality and audio/codec offload Driver APIs: - Add a batched interface for RX buffer allocation in AF_XDP buffer pool - ethtool: Add ability to control transceiver modules' power mode - phy: Introduce supported interfaces bitmap to express MAC capabilities and simplify PHY code - Drop rtnl_lock from DSA .port_fdb_{add,del} callbacks New drivers: - WiFi driver for Realtek 8852AE 802.11ax devices (rtw89) - Ethernet driver for ASIX AX88796C SPI device (x88796c) Drivers: - Broadcom PHYs - support 72165, 7712 16nm PHYs - support IDDQ-SR for additional power savings - PHY support for QCA8081, QCA9561 PHYs - NXP DPAA2: support for IRQ coalescing - NXP Ethernet (enetc): support for software TCP segmentation - Renesas Ethernet (ravb) - support DMAC and EMAC blocks of Gigabit-capable IP found on RZ/G2L SoC - Intel 100G Ethernet - support for eswitch offload of TC/OvS flow API, including offload of GRE, VxLAN, Geneve tunneling - support application device queues - ability to assign Rx and Tx queues to application threads - PTP and PPS (pulse-per-second) extensions - Broadcom Ethernet (bnxt) - devlink health reporting and device reload extensions - Mellanox Ethernet (mlx5) - offload macvlan interfaces - support HW offload of TC rules involving OVS internal ports - support HW-GRO and header/data split - support application device queues - Marvell OcteonTx2: - add XDP support for PF - add PTP support for VF - Qualcomm Ethernet switch (qca8k): support for QCA8328 - Realtek Ethernet DSA switch (rtl8366rb) - support bridge offload - support STP, fast aging, disabling address learning - support for Realtek RTL8365MB-VC, a 4+1 port 10M/100M/1GE switch - Mellanox Ethernet/IB switch (mlxsw) - multi-level qdisc hierarchy offload (e.g. RED, prio and shaping) - offload root TBF qdisc as port shaper - support multiple routing interface MAC address prefixes - support for IP-in-IP with IPv6 underlay - MediaTek WiFi (mt76) - mt7921 - ASPM, 6GHz, SDIO and testmode support - mt7915 - LED and TWT support - Qualcomm WiFi (ath11k) - include channel rx and tx time in survey dump statistics - support for 80P80 and 160 MHz bandwidths - support channel 2 in 6 GHz band - spectral scan support for QCN9074 - support for rx decapsulation offload (data frames in 802.3 format) - Qualcomm phone SoC WiFi (wcn36xx) - enable Idle Mode Power Save (IMPS) to reduce power consumption during idle - Bluetooth driver support for MediaTek MT7922 and MT7921 - Enable support for AOSP Bluetooth extension in Qualcomm WCN399x and Realtek 8822C/8852A - Microsoft vNIC driver (mana) - support hibernation and kexec - Google vNIC driver (gve) - support for jumbo frames - implement Rx page reuse Refactor: - Make all writes to netdev->dev_addr go thru helpers, so that we can add this address to the address rbtree and handle the updates - Various TCP cleanups and optimizations including improvements to CPU cache use - Simplify the gnet_stats, Qdisc stats' handling and remove qdisc->running sequence counter - Driver changes and API updates to address devlink locking deficiencies" * tag 'net-next-for-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2122 commits) Revert "net: avoid double accounting for pure zerocopy skbs" selftests: net: add arp_ndisc_evict_nocarrier net: ndisc: introduce ndisc_evict_nocarrier sysctl parameter net: arp: introduce arp_evict_nocarrier sysctl parameter libbpf: Deprecate AF_XDP support kbuild: Unify options for BTF generation for vmlinux and modules selftests/bpf: Add a testcase for 64-bit bounds propagation issue. bpf: Fix propagation of signed bounds from 64-bit min/max into 32-bit. bpf: Fix propagation of bounds from 64-bit min/max into 32-bit and var_off. net: vmxnet3: remove multiple false checks in vmxnet3_ethtool.c net: avoid double accounting for pure zerocopy skbs tcp: rename sk_wmem_free_skb netdevsim: fix uninit value in nsim_drv_configure_vfs() selftests/bpf: Fix also no-alu32 strobemeta selftest bpf: Add missing map_delete_elem method to bloom filter map selftests/bpf: Add bloom map success test for userspace calls bpf: Add alignment padding for "map_extra" + consolidate holes bpf: Bloom filter map naming fixups selftests/bpf: Add test cases for struct_ops prog bpf: Add dummy BPF STRUCT_OPS for test purpose ...
2021-11-01Merge tag 'overflow-v5.16-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull overflow updates from Kees Cook: "The end goal of the current buffer overflow detection work[0] is to gain full compile-time and run-time coverage of all detectable buffer overflows seen via array indexing or memcpy(), memmove(), and memset(). The str*() family of functions already have full coverage. While much of the work for these changes have been on-going for many releases (i.e. 0-element and 1-element array replacements, as well as avoiding false positives and fixing discovered overflows[1]), this series contains the foundational elements of several related buffer overflow detection improvements by providing new common helpers and FORTIFY_SOURCE changes needed to gain the introspection required for compiler visibility into array sizes. Also included are a handful of already Acked instances using the helpers (or related clean-ups), with many more waiting at the ready to be taken via subsystem-specific trees[2]. The new helpers are: - struct_group() for gaining struct member range introspection - memset_after() and memset_startat() for clearing to the end of structures - DECLARE_FLEX_ARRAY() for using flex arrays in unions or alone in structs Also included is the beginning of the refactoring of FORTIFY_SOURCE to support memcpy() introspection, fix missing and regressed coverage under GCC, and to prepare to fix the currently broken Clang support. Finishing this work is part of the larger series[0], but depends on all the false positives and buffer overflow bug fixes to have landed already and those that depend on this series to land. As part of the FORTIFY_SOURCE refactoring, a set of both a compile-time and run-time tests are added for FORTIFY_SOURCE and the mem*()-family functions respectively. The compile time tests have found a legitimate (though corner-case) bug[6] already. Please note that the appearance of "panic" and "BUG" in the FORTIFY_SOURCE refactoring are the result of relocating existing code, and no new use of those code-paths are expected nor desired. Finally, there are two tree-wide conversions for 0-element arrays and flexible array unions to gain sane compiler introspection coverage that result in no known object code differences. After this series (and the changes that have now landed via netdev and usb), we are very close to finally being able to build with -Warray-bounds and -Wzero-length-bounds. However, due corner cases in GCC[3] and Clang[4], I have not included the last two patches that turn on these options, as I don't want to introduce any known warnings to the build. Hopefully these can be solved soon" Link: https://lore.kernel.org/lkml/20210818060533.3569517-1-keescook@chromium.org/ [0] Link: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/log/?qt=grep&q=FORTIFY_SOURCE [1] Link: https://lore.kernel.org/lkml/202108220107.3E26FE6C9C@keescook/ [2] Link: https://lore.kernel.org/lkml/3ab153ec-2798-da4c-f7b1-81b0ac8b0c5b@roeck-us.net/ [3] Link: https://bugs.llvm.org/show_bug.cgi?id=51682 [4] Link: https://lore.kernel.org/lkml/202109051257.29B29745C0@keescook/ [5] Link: https://lore.kernel.org/lkml/20211020200039.170424-1-keescook@chromium.org/ [6] * tag 'overflow-v5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: (30 commits) fortify: strlen: Avoid shadowing previous locals compiler-gcc.h: Define __SANITIZE_ADDRESS__ under hwaddress sanitizer treewide: Replace 0-element memcpy() destinations with flexible arrays treewide: Replace open-coded flex arrays in unions stddef: Introduce DECLARE_FLEX_ARRAY() helper btrfs: Use memset_startat() to clear end of struct string.h: Introduce memset_startat() for wiping trailing members and padding xfrm: Use memset_after() to clear padding string.h: Introduce memset_after() for wiping trailing members/padding lib: Introduce CONFIG_MEMCPY_KUNIT_TEST fortify: Add compile-time FORTIFY_SOURCE tests fortify: Allow strlen() and strnlen() to pass compile-time known lengths fortify: Prepare to improve strnlen() and strlen() warnings fortify: Fix dropped strcpy() compile-time write overflow check fortify: Explicitly disable Clang support fortify: Move remaining fortify helpers into fortify-string.h lib/string: Move helper functions out of string.c compiler_types.h: Remove __compiletime_object_size() cm4000_cs: Use struct_group() to zero struct cm4000_dev region can: flexcan: Use struct_group() to zero struct flexcan_regs regions ...
2021-11-01Merge tag 'for-5.16/passthrough-flag-2021-10-29' of ↵Linus Torvalds
git://git.kernel.dk/linux-block Pull QUEUE_FLAG_SCSI_PASSTHROUGH removal from Jens Axboe: "This contains a series leading to the removal of the QUEUE_FLAG_SCSI_PASSTHROUGH queue flag" * tag 'for-5.16/passthrough-flag-2021-10-29' of git://git.kernel.dk/linux-block: block: remove blk_{get,put}_request block: remove QUEUE_FLAG_SCSI_PASSTHROUGH block: remove the initialize_rq_fn blk_mq_ops method scsi: add a scsi_alloc_request helper bsg-lib: initialize the bsg_job in bsg_transport_sg_io_fn nfsd/blocklayout: use ->get_unique_id instead of sending SCSI commands sd: implement ->get_unique_id block: add a ->get_unique_id method
2021-11-01Merge tag 'for-5.16/scsi-ma-2021-10-29' of git://git.kernel.dk/linux-blockLinus Torvalds
Pull SCSI multi-actuator support from Jens Axboe: "This adds SCSI support for the recently merged block multi-actuator support. Since this was sitting on top of the block tree, the SCSI side asked me to queue it up." * tag 'for-5.16/scsi-ma-2021-10-29' of git://git.kernel.dk/linux-block: doc: Fix typo in request queue sysfs documentation doc: document sysfs queue/independent_access_ranges attributes libata: support concurrent positioning ranges log scsi: sd: add concurrent positioning ranges support
2021-11-01Merge tag 'for-5.16/drivers-2021-10-29' of git://git.kernel.dk/linux-blockLinus Torvalds
Pull block driver updates from Jens Axboe: - paride driver cleanups (Christoph) - Remove cryptoloop support (Christoph) - null_blk poll support (me) - Now that add_disk() supports proper error handling, add it to various drivers (Luis) - Make ataflop actually work again (Michael) - s390 dasd fixes (Stefan, Heiko) - nbd fixes (Yu, Ye) - Remove redundant wq flush in mtip32xx (Christophe) - NVMe updates - fix a multipath partition scanning deadlock (Hannes Reinecke) - generate uevent once a multipath namespace is operational again (Hannes Reinecke) - support unique discovery controller NQNs (Hannes Reinecke) - fix use-after-free when a port is removed (Israel Rukshin) - clear shadow doorbell memory on resets (Keith Busch) - use struct_size (Len Baker) - add error handling support for add_disk (Luis Chamberlain) - limit the maximal queue size for RDMA controllers (Max Gurtovoy) - use a few more symbolic names (Max Gurtovoy) - fix error code in nvme_rdma_setup_ctrl (Max Gurtovoy) - add support for ->map_queues on FC (Saurav Kashyap) - support the current discovery subsystem entry (Hannes Reinecke) - use flex_array_size and struct_size (Len Baker) - bcache fixes (Christoph, Coly, Chao, Lin, Qing) - MD updates (Christoph, Guoqing, Xiao) - Misc fixes (Dan, Ding, Jiapeng, Shin'ichiro, Ye) * tag 'for-5.16/drivers-2021-10-29' of git://git.kernel.dk/linux-block: (117 commits) null_blk: Fix handling of submit_queues and poll_queues attributes block: ataflop: Fix warning comparing pointer to 0 bcache: replace snprintf in show functions with sysfs_emit bcache: move uapi header bcache.h to bcache code directory nvmet: use flex_array_size and struct_size nvmet: register discovery subsystem as 'current' nvmet: switch check for subsystem type nvme: add new discovery log page entry definitions block: ataflop: more blk-mq refactoring fixes block: remove support for cryptoloop and the xor transfer mtd: add add_disk() error handling rnbd: add error handling support for add_disk() um/drivers/ubd_kern: add error handling support for add_disk() m68k/emu/nfblock: add error handling support for add_disk() xen-blkfront: add error handling support for add_disk() bcache: add error handling support for add_disk() dm: add add_disk() error handling block: aoe: fixup coccinelle warnings nvmet: use struct_size over open coded arithmetic nvme: drop scan_lock and always kick requeue list when removing namespaces ...
generated by cgit (git 2.34.1) at 2024-05-22 13:16:23 +0000