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2016-12-15vhost: add missing __user annotationsMichael S. Tsirkin
Several vhost functions were missing __user annotations on pointers, causing sparse warnings. Fix this up. sparse also warns about vhost_process_iotlb_msg which is local and should be static. Fix that up as well. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2016-12-15vhost: make interval tree static inlineMichael S. Tsirkin
vhost_umem_interval_tree is only used locally within vhost.c, mark it static. As some functions generated go unused, this triggers warnings unless we also mark it inline. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2016-12-15drm/virtio: annotate virtio_gpu_queue_ctrl_buffer_lockedMichael S. Tsirkin
virtio_gpu_queue_ctrl_buffer_locked is called with ctrlq.qlock taken, it releases and acquires this lock. This causes a sparse warning. Add appropriate annotations for sparse context checking. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2016-12-15drm/virtio: fix lock context imbalanceMichael S. Tsirkin
When virtio_gpu_free_vbufs exits due to list empty, it does not drop the free_vbufs lock that it took. list empty is not expected to happen anyway, but it can't hurt to fix this and drop the lock. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2016-12-15drm/virtio: fix endianness in primary_plane_updateMichael S. Tsirkin
virtio_gpu_cmd_transfer_to_host_2d expects x and y parameters in LE, but virtio_gpu_primary_plane_update passes in the CPU format instead. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2016-12-15virtio_console: drop unused config fieldsMichael S. Tsirkin
struct ports_device includes a config field including the whole virtio_console_config, but only max_nr_ports in there is ever updated or used. The rest is unused and in fact does not even mirror the device config. Drop everything except max_nr_ports, saving some memory. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Jason Wang <jasowang@redhat.com>
2016-12-14Merge tag 'for-linus-4.10' of git://git.code.sf.net/p/openipmi/linux-ipmiLinus Torvalds
Pull IPMI updates from Corey Minyard: "Various small fixes for IPMI. Cleanups in the documentation and convertion printk() to pr_xxx() and removal of an unused module parameter. Some small bug fixes and enhancements. This also adds a post softdep from the IPMI core module to the IPMI device interface. Many people have complained that the device interface isn't automatically avaiable when IPMI is loaded. I don't want to make the device interface mandatory, though, plenty of people use IPMI internally (like with ACPI) and don't need a device interface or the added possible security entry. A softdep should make it work 'out of the box' but allow people to not have it if they don't want it" * tag 'for-linus-4.10' of git://git.code.sf.net/p/openipmi/linux-ipmi: ipmi: create hardware-independent softdep for ipmi_devintf ipmi: Fix sequence number handling ipmi: Pick up slave address from SMBIOS on an ACPI device ipmi_si: Clean up printks Move platform device creation earlier in the initialization ipmi: Update documentation ipmi_ssif: Remove an unused module parameter ipmi: Periodically check for events, not messages
2016-12-14Merge tag 'dmaengine-4.10-rc1' of git://git.infradead.org/users/vkoul/slave-dmaLinus Torvalds
Pull dmaengine updates from Vinod Koul: "Fairly routine update this time around with all changes specific to drivers: - New driver for STMicroelectronics FDMA - Memory-to-memory transfers on dw dmac - Support for slave maps on pl08x devices - Bunch of driver fixes to use dma_pool_zalloc - Bunch of compile and warning fixes spread across drivers" [ The ST FDMA driver already came in earlier through the remoteproc tree ] * tag 'dmaengine-4.10-rc1' of git://git.infradead.org/users/vkoul/slave-dma: (68 commits) dmaengine: sirf-dma: remove unused ‘sdesc’ dmaengine: pl330: remove unused ‘regs’ dmaengine: s3c24xx: remove unused ‘cdata’ dmaengine: stm32-dma: remove unused ‘src_addr’ dmaengine: stm32-dma: remove unused ‘dst_addr’ dmaengine: stm32-dma: remove unused ‘sfcr’ dmaengine: pch_dma: remove unused ‘cookie’ dmaengine: mic_x100_dma: remove unused ‘data’ dmaengine: img-mdc: remove unused ‘prev_phys’ dmaengine: usb-dmac: remove unused ‘uchan’ dmaengine: ioat: remove unused ‘res’ dmaengine: ioat: remove unused ‘ioat_dma’ dmaengine: ioat: remove unused ‘is_raid_device’ dmaengine: pl330: do not generate unaligned access dmaengine: k3dma: move to dma_pool_zalloc dmaengine: at_hdmac: move to dma_pool_zalloc dmaengine: at_xdmac: don't restore unsaved status dmaengine: ioat: set error code on failures dmaengine: ioat: set error code on failures dmaengine: DW DMAC: add multi-block property to device tree ...
2016-12-15virtio_ring: fix complaint by sparseGonglei
# make C=2 CF="-D__CHECK_ENDIAN__" ./drivers/virtio/ drivers/virtio/virtio_ring.c:423:19: warning: incorrect type in assignment (different base types) drivers/virtio/virtio_ring.c:423:19: expected unsigned int [unsigned] [assigned] i drivers/virtio/virtio_ring.c:423:19: got restricted __virtio16 [usertype] next drivers/virtio/virtio_ring.c:423:19: warning: incorrect type in assignment (different base types) drivers/virtio/virtio_ring.c:423:19: expected unsigned int [unsigned] [assigned] i drivers/virtio/virtio_ring.c:423:19: got restricted __virtio16 [usertype] next drivers/virtio/virtio_ring.c:423:19: warning: incorrect type in assignment (different base types) drivers/virtio/virtio_ring.c:423:19: expected unsigned int [unsigned] [assigned] i drivers/virtio/virtio_ring.c:423:19: got restricted __virtio16 [usertype] next drivers/virtio/virtio_ring.c:604:39: warning: incorrect type in initializer (different base types) drivers/virtio/virtio_ring.c:604:39: expected unsigned short [unsigned] [usertype] nextflag drivers/virtio/virtio_ring.c:604:39: got restricted __virtio16 drivers/virtio/virtio_ring.c:612:33: warning: restricted __virtio16 degrades to integer Signed-off-by: Gonglei <arei.gonglei@huawei.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2016-12-15virtio_pci_modern: fix complaint by sparseGonglei
drivers/virtio/virtio_pci_modern.c:66:40: warning: incorrect type in argument 2 (different base types) drivers/virtio/virtio_pci_modern.c:66:40: expected unsigned int [noderef] [usertype] <asn:2>*addr drivers/virtio/virtio_pci_modern.c:66:40: got restricted __le32 [noderef] [usertype] <asn:2>*lo drivers/virtio/virtio_pci_modern.c:67:33: warning: incorrect type in argument 2 (different base types) drivers/virtio/virtio_pci_modern.c:67:33: expected unsigned int [noderef] [usertype] <asn:2>*addr drivers/virtio/virtio_pci_modern.c:67:33: got restricted __le32 [noderef] [usertype] <asn:2>*hi drivers/virtio/virtio_pci_modern.c:150:32: warning: incorrect type in argument 2 (different base types) drivers/virtio/virtio_pci_modern.c:150:32: expected unsigned int [noderef] [usertype] <asn:2>*addr drivers/virtio/virtio_pci_modern.c:150:32: got restricted __le32 [noderef] <asn:2>*<noident> drivers/virtio/virtio_pci_modern.c:151:39: warning: incorrect type in argument 1 (different base types) drivers/virtio/virtio_pci_modern.c:151:39: expected unsigned int [noderef] [usertype] <asn:2>*addr drivers/virtio/virtio_pci_modern.c:151:39: got restricted __le32 [noderef] <asn:2>*<noident> drivers/virtio/virtio_pci_modern.c:152:32: warning: incorrect type in argument 2 (different base types) drivers/virtio/virtio_pci_modern.c:152:32: expected unsigned int [noderef] [usertype] <asn:2>*addr Signed-off-by: Gonglei <arei.gonglei@huawei.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2016-12-14Merge branch 'akpm' (patches from Andrew)Linus Torvalds
Merge more updates from Andrew Morton: - a few misc things - kexec updates - DMA-mapping updates to better support networking DMA operations - IPC updates - various MM changes to improve DAX fault handling - lots of radix-tree changes, mainly to the test suite. All leading up to reimplementing the IDA/IDR code to be a wrapper layer over the radix-tree. However the final trigger-pulling patch is held off for 4.11. * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (114 commits) radix tree test suite: delete unused rcupdate.c radix tree test suite: add new tag check radix-tree: ensure counts are initialised radix tree test suite: cache recently freed objects radix tree test suite: add some more functionality idr: reduce the number of bits per level from 8 to 6 rxrpc: abstract away knowledge of IDR internals tpm: use idr_find(), not idr_find_slowpath() idr: add ida_is_empty radix tree test suite: check multiorder iteration radix-tree: fix replacement for multiorder entries radix-tree: add radix_tree_split_preload() radix-tree: add radix_tree_split radix-tree: add radix_tree_join radix-tree: delete radix_tree_range_tag_if_tagged() radix-tree: delete radix_tree_locate_item() radix-tree: improve multiorder iterators btrfs: fix race in btrfs_free_dummy_fs_info() radix-tree: improve dump output radix-tree: make radix_tree_find_next_bit more useful ...
2016-12-14Merge branch 'for-linus' of git://git.kernel.dk/linux-blockLinus Torvalds
Pull block IO fixes from Jens Axboe: "A few fixes that I collected as post-merge. I was going to wait a bit with sending this out, but the O_DIRECT fix should really go in sooner rather than later" * 'for-linus' of git://git.kernel.dk/linux-block: blk-mq: Fix failed allocation path when mapping queues blk-mq: Avoid memory reclaim when remapping queues block_dev: don't update file access position for sync direct IO nvme/pci: Log PCI_STATUS when the controller dies block_dev: don't test bdev->bd_contains when it is not stable
2016-12-14tpm: use idr_find(), not idr_find_slowpath()Matthew Wilcox
idr_find_slowpath() is not intended to be part of the public API, it's an implementation detail. There's no reason to skip straight to the slowpath here. Link: http://lkml.kernel.org/r/1480369871-5271-64-git-send-email-mawilcox@linuxonhyperv.com Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com> Tested-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Konstantin Khlebnikov <koct9i@gmail.com> Cc: Ross Zwisler <ross.zwisler@linux.intel.com> Cc: Peter Huewe <peterhuewe@gmx.de> Cc: Marcel Selhorst <tpmdd@selhorst.net> Cc: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Cc: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Cc: Matthew Wilcox <mawilcox@microsoft.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-12-14idr: add ida_is_emptyMatthew Wilcox
Two of the USB Gadgets were poking around in the internals of struct ida in order to determine if it is empty. Add the appropriate abstraction. Link: http://lkml.kernel.org/r/1480369871-5271-63-git-send-email-mawilcox@linuxonhyperv.com Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Acked-by: Konstantin Khlebnikov <koct9i@gmail.com> Tested-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Ross Zwisler <ross.zwisler@linux.intel.com> Cc: Felipe Balbi <balbi@kernel.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Michal Nazarewicz <mina86@mina86.com> Cc: Matthew Wilcox <mawilcox@microsoft.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-12-14mm: use vmf->address instead of of vmf->virtual_addressJan Kara
Every single user of vmf->virtual_address typed that entry to unsigned long before doing anything with it so the type of virtual_address does not really provide us any additional safety. Just use masked vmf->address which already has the appropriate type. Link: http://lkml.kernel.org/r/1479460644-25076-3-git-send-email-jack@suse.cz Signed-off-by: Jan Kara <jack@suse.cz> Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Ross Zwisler <ross.zwisler@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-12-14mm: add locked parameter to get_user_pages_remote()Lorenzo Stoakes
Patch series "mm: unexport __get_user_pages_unlocked()". This patch series continues the cleanup of get_user_pages*() functions taking advantage of the fact we can now pass gup_flags as we please. It firstly adds an additional 'locked' parameter to get_user_pages_remote() to allow for its callers to utilise VM_FAULT_RETRY functionality. This is necessary as the invocation of __get_user_pages_unlocked() in process_vm_rw_single_vec() makes use of this and no other existing higher level function would allow it to do so. Secondly existing callers of __get_user_pages_unlocked() are replaced with the appropriate higher-level replacement - get_user_pages_unlocked() if the current task and memory descriptor are referenced, or get_user_pages_remote() if other task/memory descriptors are referenced (having acquiring mmap_sem.) This patch (of 2): Add a int *locked parameter to get_user_pages_remote() to allow VM_FAULT_RETRY faulting behaviour similar to get_user_pages_[un]locked(). Taking into account the previous adjustments to get_user_pages*() functions allowing for the passing of gup_flags, we are now in a position where __get_user_pages_unlocked() need only be exported for his ability to allow VM_FAULT_RETRY behaviour, this adjustment allows us to subsequently unexport __get_user_pages_unlocked() as well as allowing for future flexibility in the use of get_user_pages_remote(). [sfr@canb.auug.org.au: merge fix for get_user_pages_remote API change] Link: http://lkml.kernel.org/r/20161122210511.024ec341@canb.auug.org.au Link: http://lkml.kernel.org/r/20161027095141.2569-2-lstoakes@gmail.com Signed-off-by: Lorenzo Stoakes <lstoakes@gmail.com> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Jan Kara <jack@suse.cz> Cc: Hugh Dickins <hughd@google.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Rik van Riel <riel@redhat.com> Cc: Mel Gorman <mgorman@techsingularity.net> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Radim Krcmar <rkrcmar@redhat.com> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-12-14drivers/net/wireless/intel/iwlwifi/dvm/calib.c: simplfy min() expressionAndrew Morton
This cast is no longer needed. Cc: Johannes Berg <johannes.berg@intel.com> Cc: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Cc: Intel Linux Wireless <linuxwifi@intel.com> Cc: Kalle Valo <kvalo@codeaurora.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-12-14igb: update code to better handle incrementing page countAlexander Duyck
Update the driver code so that we do bulk updates of the page reference count instead of just incrementing it by one reference at a time. The advantage to doing this is that we cut down on atomic operations and this in turn should give us a slight improvement in cycles per packet. In addition if we eventually move this over to using build_skb the gains will be more noticeable. Link: http://lkml.kernel.org/r/20161110113616.76501.17072.stgit@ahduyck-blue-test.jf.intel.com Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: "James E.J. Bottomley" <jejb@parisc-linux.org> Cc: Chris Metcalf <cmetcalf@mellanox.com> Cc: David Howells <dhowells@redhat.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Hans-Christian Noren Egtvedt <egtvedt@samfundet.no> Cc: Helge Deller <deller@gmx.de> Cc: James Hogan <james.hogan@imgtec.com> Cc: Jonas Bonn <jonas@southpole.se> Cc: Keguang Zhang <keguang.zhang@gmail.com> Cc: Ley Foon Tan <lftan@altera.com> Cc: Mark Salter <msalter@redhat.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Simek <monstr@monstr.eu> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Rich Felker <dalias@libc.org> Cc: Richard Kuo <rkuo@codeaurora.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Steven Miao <realmz6@gmail.com> Cc: Tobias Klauser <tklauser@distanz.ch> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-12-14igb: update driver to make use of DMA_ATTR_SKIP_CPU_SYNCAlexander Duyck
The ARM architecture provides a mechanism for deferring cache line invalidation in the case of map/unmap. This patch makes use of this mechanism to avoid unnecessary synchronization. A secondary effect of this change is that the portion of the page that has been synchronized for use by the CPU should be writable and could be passed up the stack (at least on ARM). The last bit that occurred to me is that on architectures where the sync_for_cpu call invalidates cache lines we were prefetching and then invalidating the first 128 bytes of the packet. To avoid that I have moved the sync up to before we perform the prefetch and allocate the skbuff so that we can actually make use of it. Link: http://lkml.kernel.org/r/20161110113611.76501.98897.stgit@ahduyck-blue-test.jf.intel.com Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: "James E.J. Bottomley" <jejb@parisc-linux.org> Cc: Chris Metcalf <cmetcalf@mellanox.com> Cc: David Howells <dhowells@redhat.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Hans-Christian Noren Egtvedt <egtvedt@samfundet.no> Cc: Helge Deller <deller@gmx.de> Cc: James Hogan <james.hogan@imgtec.com> Cc: Jonas Bonn <jonas@southpole.se> Cc: Keguang Zhang <keguang.zhang@gmail.com> Cc: Ley Foon Tan <lftan@altera.com> Cc: Mark Salter <msalter@redhat.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Simek <monstr@monstr.eu> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Rich Felker <dalias@libc.org> Cc: Richard Kuo <rkuo@codeaurora.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Steven Miao <realmz6@gmail.com> Cc: Tobias Klauser <tklauser@distanz.ch> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-12-14Merge branch 'next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security Pull security subsystem updates from James Morris: "Generally pretty quiet for this release. Highlights: Yama: - allow ptrace access for original parent after re-parenting TPM: - add documentation - many bugfixes & cleanups - define a generic open() method for ascii & bios measurements Integrity: - Harden against malformed xattrs SELinux: - bugfixes & cleanups Smack: - Remove unnecessary smack_known_invalid label - Do not apply star label in smack_setprocattr hook - parse mnt opts after privileges check (fixes unpriv DoS vuln)" * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: (56 commits) Yama: allow access for the current ptrace parent tpm: adjust return value of tpm_read_log tpm: vtpm_proxy: conditionally call tpm_chip_unregister tpm: Fix handling of missing event log tpm: Check the bios_dir entry for NULL before accessing it tpm: return -ENODEV if np is not set tpm: cleanup of printk error messages tpm: replace of_find_node_by_name() with dev of_node property tpm: redefine read_log() to handle ACPI/OF at runtime tpm: fix the missing .owner in tpm_bios_measurements_ops tpm: have event log use the tpm_chip tpm: drop tpm1_chip_register(/unregister) tpm: replace dynamically allocated bios_dir with a static array tpm: replace symbolic permission with octal for securityfs files char: tpm: fix kerneldoc tpm2_unseal_trusted name typo tpm_tis: Allow tpm_tis to be bound using DT tpm, tpm_vtpm_proxy: add kdoc comments for VTPM_PROXY_IOC_NEW_DEV tpm: Only call pm_runtime_get_sync if device has a parent tpm: define a generic open() method for ascii & bios measurements Documentation: tpm: add the Physical TPM device tree binding documentation ...
2016-12-14Merge branch 'linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 Pull crypto updates from Herbert Xu: "Here is the crypto update for 4.10: API: - add skcipher walk interface - add asynchronous compression (acomp) interface - fix algif_aed AIO handling of zero buffer Algorithms: - fix unaligned access in poly1305 - fix DRBG output to large buffers Drivers: - add support for iMX6UL to caam - fix givenc descriptors (used by IPsec) in caam - accelerated SHA256/SHA512 for ARM64 from OpenSSL - add SSE CRCT10DIF and CRC32 to ARM/ARM64 - add AEAD support to Chelsio chcr - add Armada 8K support to omap-rng" * 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (148 commits) crypto: testmgr - fix overlap in chunked tests again crypto: arm/crc32 - accelerated support based on x86 SSE implementation crypto: arm64/crc32 - accelerated support based on x86 SSE implementation crypto: arm/crct10dif - port x86 SSE implementation to ARM crypto: arm64/crct10dif - port x86 SSE implementation to arm64 crypto: testmgr - add/enhance test cases for CRC-T10DIF crypto: testmgr - avoid overlap in chunked tests crypto: chcr - checking for IS_ERR() instead of NULL crypto: caam - check caam_emi_slow instead of re-lookup platform crypto: algif_aead - fix AIO handling of zero buffer crypto: aes-ce - Make aes_simd_algs static crypto: algif_skcipher - set error code when kcalloc fails crypto: caam - make aamalg_desc a proper module crypto: caam - pass key buffers with typesafe pointers crypto: arm64/aes-ce-ccm - Fix AEAD decryption length MAINTAINERS: add crypto headers to crypto entry crypt: doc - remove misleading mention of async API crypto: doc - fix header file name crypto: api - fix comment typo crypto: skcipher - Add separate walker for AEAD decryption ..
2016-12-14scsi: avoid a permanent stop of the scsi device's request queueWei Fang
A race between scanning and fc_remote_port_delete() may result in a permanent stop if the device gets blocked before scsi_sysfs_add_sdev() and unblocked after. The reason is that blocking a device sets both the SDEV_BLOCKED state and the QUEUE_FLAG_STOPPED. However, scsi_sysfs_add_sdev() unconditionally sets SDEV_RUNNING which causes the device to be ignored by scsi_target_unblock() and thus never have its QUEUE_FLAG_STOPPED cleared leading to a device which is apparently running but has a stopped queue. We actually have two places where SDEV_RUNNING is set: once in scsi_add_lun() which respects the blocked flag and once in scsi_sysfs_add_sdev() which doesn't. Since the second set is entirely spurious, simply remove it to fix the problem. Cc: <stable@vger.kernel.org> Reported-by: Zengxi Chen <chenzengxi@huawei.com> Signed-off-by: Wei Fang <fangwei1@huawei.com> Reviewed-by: Ewan D. Milne <emilne@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-12-14scsi: mpt3sas: Recognize and act on iopriority infoAdam Manzanares
This patch adds support for request iopriority handling in the mpt3sas layer. This works only when a ATA device is behind the SATL. The ATA device also has to indicate that it supports command priorities in the identify information that is pulled from the SATL. Signed-off-by: Adam Manzanares <adam.manzanares@wdc.com> Acked-by: Sreekanth Reddy <Sreekanth.Reddy@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-12-14scsi: qla2xxx: Fix Target mode handling with Multiqueue changes.Quinn Tran
- Fix race condition between dpc_thread accessing Multiqueue resources and qla2x00_remove_one thread trying to free resource. - Fix out of order free for Multiqueue resources. Also, Multiqueue interrupts needs a workqueue. Interrupt needed to stop before the wq can be destroyed. Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-12-14scsi: qla2xxx: Add Block Multi Queue functionality.Michael Hernandez
Tell the SCSI layer how many hardware queues we have based on the number of max queue pairs created. The number of max queue pairs created will depend on number of MSI-X vector count. This feature can be turned on via CONFIG_SCSI_MQ_DEFAULT or passing scsi_mod.use_blk_mq=Y as a parameter to the kernel Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Sawan Chandak <sawan.chandak@cavium.com> Signed-off-by: Michael Hernandez <michael.hernandez@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-12-14scsi: qla2xxx: Add multiple queue pair functionality.Michael Hernandez
Replaced existing multiple queue functionality with framework that allows for the creation of pairs of request and response queues, either at start of day or dynamically. Queue pair creation depend on module parameter "ql2xmqsupport", which need to be enabled to create queue pair. Signed-off-by: Sawan Chandak <sawan.chandak@cavium.com> Signed-off-by: Michael Hernandez <michael.hernandez@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-12-14scsi: qla2xxx: Utilize pci_alloc_irq_vectors/pci_free_irq_vectors calls.Michael Hernandez
Replaces the old pci_enable_msi[x]* and pci_disable_msi[x] calls. Signed-off-by: Michael Hernandez <michael.hernandez@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-12-14scsi: qla2xxx: Only allow operational MBX to proceed during RESET.himanshu.madhani@cavium.com
This patch is allowing only ROM mailbox command which are necessary to initialize chip after a reset has been issued. In a target environment, there could be a user space daemon which can issue statistics and other management mailbox command which are non-critical. This patch will timeout non critical mailbox commands immediately rather than waiting for timeout, if driver detects that chip reset has been issued or chip reset is in progress. Reviewed-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Giridhar Malavali <giridhar.malavali@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-12-14scsi: hpsa: remove memory allocate failure messageAmit Kushwaha
This patch cleanup warning reported by checkpatch.pl WARNING: Possible unnecessary 'out of memory' message With no available memory, a warn on message already gets printed by page alloc apis and modified goto use if memory unallocated. Signed-off-by: Amit Kushwaha <kushwaha.a@samsung.com> Acked-by: Don Brace <don.brace@microsemi.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-12-14scsi: Update 3ware driver email addressesadam radford
This change updates the 3ware drivers (3w-xxxx, 3w-9xxx, 3w-sas) email addresses from linuxraid@lsi.com to aradford@gmail.com, since the old email address doesn't exist. This patch was updated to remove www.lsi.com text. [mkp: applied by hand] Signed-off-by: Adam Radford <aradford@gmail.com> Acked-by: Sumit Saxena <sumit.saxena@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-12-14scsi: zfcp: fix rport unblock race with LUN recoverySteffen Maier
It is unavoidable that zfcp_scsi_queuecommand() has to finish requests with DID_IMM_RETRY (like fc_remote_port_chkready()) during the time window when zfcp detected an unavailable rport but fc_remote_port_delete(), which is asynchronous via zfcp_scsi_schedule_rport_block(), has not yet blocked the rport. However, for the case when the rport becomes available again, we should prevent unblocking the rport too early. In contrast to other FCP LLDDs, zfcp has to open each LUN with the FCP channel hardware before it can send I/O to a LUN. So if a port already has LUNs attached and we unblock the rport just after port recovery, recoveries of LUNs behind this port can still be pending which in turn force zfcp_scsi_queuecommand() to unnecessarily finish requests with DID_IMM_RETRY. This also opens a time window with unblocked rport (until the followup LUN reopen recovery has finished). If a scsi_cmnd timeout occurs during this time window fc_timed_out() cannot work as desired and such command would indeed time out and trigger scsi_eh. This prevents a clean and timely path failover. This should not happen if the path issue can be recovered on FC transport layer such as path issues involving RSCNs. Fix this by only calling zfcp_scsi_schedule_rport_register(), to asynchronously trigger fc_remote_port_add(), after all LUN recoveries as children of the rport have finished and no new recoveries of equal or higher order were triggered meanwhile. Finished intentionally includes any recovery result no matter if successful or failed (still unblock rport so other successful LUNs work). For simplicity, we check after each finished LUN recovery if there is another LUN recovery pending on the same port and then do nothing. We handle the special case of a successful recovery of a port without LUN children the same way without changing this case's semantics. For debugging we introduce 2 new trace records written if the rport unblock attempt was aborted due to still unfinished or freshly triggered recovery. The records are only written above the default trace level. Benjamin noticed the important special case of new recovery that can be triggered between having given up the erp_lock and before calling zfcp_erp_action_cleanup() within zfcp_erp_strategy(). We must avoid the following sequence: ERP thread rport_work other context ------------------------- -------------- -------------------------------- port is unblocked, rport still blocked, due to pending/running ERP action, so ((port->status & ...UNBLOCK) != 0) and (port->rport == NULL) unlock ERP zfcp_erp_action_cleanup() case ZFCP_ERP_ACTION_REOPEN_LUN: zfcp_erp_try_rport_unblock() ((status & ...UNBLOCK) != 0) [OLD!] zfcp_erp_port_reopen() lock ERP zfcp_erp_port_block() port->status clear ...UNBLOCK unlock ERP zfcp_scsi_schedule_rport_block() port->rport_task = RPORT_DEL queue_work(rport_work) zfcp_scsi_rport_work() (port->rport_task != RPORT_ADD) port->rport_task = RPORT_NONE zfcp_scsi_rport_block() if (!port->rport) return zfcp_scsi_schedule_rport_register() port->rport_task = RPORT_ADD queue_work(rport_work) zfcp_scsi_rport_work() (port->rport_task == RPORT_ADD) port->rport_task = RPORT_NONE zfcp_scsi_rport_register() (port->rport == NULL) rport = fc_remote_port_add() port->rport = rport; Now the rport was erroneously unblocked while the zfcp_port is blocked. This is another situation we want to avoid due to scsi_eh potential. This state would at least remain until the new recovery from the other context finished successfully, or potentially forever if it failed. In order to close this race, we take the erp_lock inside zfcp_erp_try_rport_unblock() when checking the status of zfcp_port or LUN. With that, the possible corresponding rport state sequences would be: (unblock[ERP thread],block[other context]) if the ERP thread gets erp_lock first and still sees ((port->status & ...UNBLOCK) != 0), (block[other context],NOP[ERP thread]) if the ERP thread gets erp_lock after the other context has already cleard ...UNBLOCK from port->status. Since checking fields of struct erp_action is unsafe because they could have been overwritten (re-used for new recovery) meanwhile, we only check status of zfcp_port and LUN since these are only changed under erp_lock elsewhere. Regarding the check of the proper status flags (port or port_forced are similar to the shown adapter recovery): [zfcp_erp_adapter_shutdown()] zfcp_erp_adapter_reopen() zfcp_erp_adapter_block() * clear UNBLOCK ---------------------------------------+ zfcp_scsi_schedule_rports_block() | write_lock_irqsave(&adapter->erp_lock, flags);-------+ | zfcp_erp_action_enqueue() | | zfcp_erp_setup_act() | | * set ERP_INUSE -----------------------------------|--|--+ write_unlock_irqrestore(&adapter->erp_lock, flags);--+ | | .context-switch. | | zfcp_erp_thread() | | zfcp_erp_strategy() | | write_lock_irqsave(&adapter->erp_lock, flags);------+ | | ... | | | zfcp_erp_strategy_check_target() | | | zfcp_erp_strategy_check_adapter() | | | zfcp_erp_adapter_unblock() | | | * set UNBLOCK -----------------------------------|--+ | zfcp_erp_action_dequeue() | | * clear ERP_INUSE ---------------------------------|-----+ ... | write_unlock_irqrestore(&adapter->erp_lock, flags);-+ Hence, we should check for both UNBLOCK and ERP_INUSE because they are interleaved. Also we need to explicitly check ERP_FAILED for the link down case which currently does not clear the UNBLOCK flag in zfcp_fsf_link_down_info_eval(). Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com> Fixes: 8830271c4819 ("[SCSI] zfcp: Dont fail SCSI commands when transitioning to blocked fc_rport") Fixes: a2fa0aede07c ("[SCSI] zfcp: Block FC transport rports early on errors") Fixes: 5f852be9e11d ("[SCSI] zfcp: Fix deadlock between zfcp ERP and SCSI") Fixes: 338151e06608 ("[SCSI] zfcp: make use of fc_remote_port_delete when target port is unavailable") Fixes: 3859f6a248cb ("[PATCH] zfcp: add rports to enable scsi_add_device to work again") Cc: <stable@vger.kernel.org> #2.6.32+ Reviewed-by: Benjamin Block <bblock@linux.vnet.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-12-14scsi: zfcp: do not trace pure benign residual HBA responses at default levelSteffen Maier
Since quite a while, Linux issues enough SCSI commands per scsi_device which successfully return with FCP_RESID_UNDER, FSF_FCP_RSP_AVAILABLE, and SAM_STAT_GOOD. This floods the HBA trace area and we cannot see other and important HBA trace records long enough. Therefore, do not trace HBA response errors for pure benign residual under counts at the default trace level. This excludes benign residual under count combined with other validity bits set in FCP_RSP_IU, such as FCP_SNS_LEN_VAL. For all those other cases, we still do want to see both the HBA record and the corresponding SCSI record by default. Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com> Fixes: a54ca0f62f95 ("[SCSI] zfcp: Redesign of the debug tracing for HBA records.") Cc: <stable@vger.kernel.org> #2.6.37+ Reviewed-by: Benjamin Block <bblock@linux.vnet.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-12-14scsi: zfcp: fix use-after-"free" in FC ingress path after TMFBenjamin Block
When SCSI EH invokes zFCP's callbacks for eh_device_reset_handler() and eh_target_reset_handler(), it expects us to relent the ownership over the given scsi_cmnd and all other scsi_cmnds within the same scope - LUN or target - when returning with SUCCESS from the callback ('release' them). SCSI EH can then reuse those commands. We did not follow this rule to release commands upon SUCCESS; and if later a reply arrived for one of those supposed to be released commands, we would still make use of the scsi_cmnd in our ingress tasklet. This will at least result in undefined behavior or a kernel panic because of a wrong kernel pointer dereference. To fix this, we NULLify all pointers to scsi_cmnds (struct zfcp_fsf_req *)->data in the matching scope if a TMF was successful. This is done under the locks (struct zfcp_adapter *)->abort_lock and (struct zfcp_reqlist *)->lock to prevent the requests from being removed from the request-hashtable, and the ingress tasklet from making use of the scsi_cmnd-pointer in zfcp_fsf_fcp_cmnd_handler(). For cases where a reply arrives during SCSI EH, but before we get a chance to NULLify the pointer - but before we return from the callback -, we assume that the code is protected from races via the CAS operation in blk_complete_request() that is called in scsi_done(). The following stacktrace shows an example for a crash resulting from the previous behavior: Unable to handle kernel pointer dereference at virtual kernel address fffffee17a672000 Oops: 0038 [#1] SMP CPU: 2 PID: 0 Comm: swapper/2 Not tainted task: 00000003f7ff5be0 ti: 00000003f3d38000 task.ti: 00000003f3d38000 Krnl PSW : 0404d00180000000 00000000001156b0 (smp_vcpu_scheduled+0x18/0x40) R:0 T:1 IO:0 EX:0 Key:0 M:1 W:0 P:0 AS:3 CC:1 PM:0 EA:3 Krnl GPRS: 000000200000007e 0000000000000000 fffffee17a671fd8 0000000300000015 ffffffff80000000 00000000005dfde8 07000003f7f80e00 000000004fa4e800 000000036ce8d8f8 000000036ce8d9c0 00000003ece8fe00 ffffffff969c9e93 00000003fffffffd 000000036ce8da10 00000000003bf134 00000003f3b07918 Krnl Code: 00000000001156a2: a7190000 lghi %r1,0 00000000001156a6: a7380015 lhi %r3,21 #00000000001156aa: e32050000008 ag %r2,0(%r5) >00000000001156b0: 482022b0 lh %r2,688(%r2) 00000000001156b4: ae123000 sigp %r1,%r2,0(%r3) 00000000001156b8: b2220020 ipm %r2 00000000001156bc: 8820001c srl %r2,28 00000000001156c0: c02700000001 xilf %r2,1 Call Trace: ([<0000000000000000>] 0x0) [<000003ff807bdb8e>] zfcp_fsf_fcp_cmnd_handler+0x3de/0x490 [zfcp] [<000003ff807be30a>] zfcp_fsf_req_complete+0x252/0x800 [zfcp] [<000003ff807c0a48>] zfcp_fsf_reqid_check+0xe8/0x190 [zfcp] [<000003ff807c194e>] zfcp_qdio_int_resp+0x66/0x188 [zfcp] [<000003ff80440c64>] qdio_kick_handler+0xdc/0x310 [qdio] [<000003ff804463d0>] __tiqdio_inbound_processing+0xf8/0xcd8 [qdio] [<0000000000141fd4>] tasklet_action+0x9c/0x170 [<0000000000141550>] __do_softirq+0xe8/0x258 [<000000000010ce0a>] do_softirq+0xba/0xc0 [<000000000014187c>] irq_exit+0xc4/0xe8 [<000000000046b526>] do_IRQ+0x146/0x1d8 [<00000000005d6a3c>] io_return+0x0/0x8 [<00000000005d6422>] vtime_stop_cpu+0x4a/0xa0 ([<0000000000000000>] 0x0) [<0000000000103d8a>] arch_cpu_idle+0xa2/0xb0 [<0000000000197f94>] cpu_startup_entry+0x13c/0x1f8 [<0000000000114782>] smp_start_secondary+0xda/0xe8 [<00000000005d6efe>] restart_int_handler+0x56/0x6c [<0000000000000000>] 0x0 Last Breaking-Event-Address: [<00000000003bf12e>] arch_spin_lock_wait+0x56/0xb0 Suggested-by: Steffen Maier <maier@linux.vnet.ibm.com> Signed-off-by: Benjamin Block <bblock@linux.vnet.ibm.com> Fixes: ea127f9754 ("[PATCH] s390 (7/7): zfcp host adapter.") (tglx/history.git) Cc: <stable@vger.kernel.org> #2.6.32+ Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-12-14scsi: libcxgbi: return error if interface is not upVarun Prakash
Do not post hw active open cmd if IFF_UP is not set or link is down on the interface, return -ENETDOWN in this case. Signed-off-by: Varun Prakash <varun@chelsio.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-12-14scsi: cxgb4i: libcxgbi: add missing module_put()Varun Prakash
Add module_put() in cxgbi_sock_act_open_req_arp_failure() to release module reference in case of arp failure, also check return value of try_module_get() before posting active open hw cmd. Signed-off-by: Varun Prakash <varun@chelsio.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-12-14scsi: cxgb4i: libcxgbi: cxgb4: add T6 iSCSI completion featureVarun Prakash
T6 adapters reduce number of completions to host by generating single completion for all the directly placed(DDP) iSCSI pdus in a sequence. This patch adds new structure for completion hw cmd (struct cpl_rx_iscsi_cmp) and implements T6 completion feature. Signed-off-by: Varun Prakash <varun@chelsio.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-12-14scsi: cxgb4i: libcxgbi: add active open cmd for T6 adaptersVarun Prakash
Add T6 active open cmd to open active connections on T6 adapters. Signed-off-by: Varun Prakash <varun@chelsio.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-12-14scsi: cxgb4i: use cxgb4_tp_smt_idx() to get smt_idxVarun Prakash
cxgb4_tp_smt_idx() is defined in cxgb4 driver, it returns smt_idx for T4,T5,T6 adapters. Signed-off-by: Varun Prakash <varun@chelsio.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-12-14scsi: qedi: Add QLogic FastLinQ offload iSCSI driver framework.Manish Rangankar
The QLogic FastLinQ Driver for iSCSI (qedi) is the iSCSI specific module for 41000 Series Converged Network Adapters by QLogic. This patch consists of following changes: - MAINTAINERS Makefile and Kconfig changes for qedi, - PCI driver registration, - iSCSI host level initialization, - Debugfs and log level infrastructure. The following indiviual changes are merged into this commit: qedi: Add LL2 iSCSI interface for offload iSCSI. qedi: Add support for iSCSI session management. qedi: Add support for data path. Signed-off-by: Nilesh Javali <nilesh.javali@cavium.com> Signed-off-by: Adheer Chandravanshi <adheer.chandravanshi@qlogic.com> Signed-off-by: Chad Dupuis <chad.dupuis@cavium.com> Signed-off-by: Saurav Kashyap <saurav.kashyap@cavium.com> Signed-off-by: Arun Easi <arun.easi@cavium.com> Signed-off-by: Manish Rangankar <manish.rangankar@cavium.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-12-14Merge branch 'vmw_pvrdma' into merge-testDoug Ledford
2016-12-14IB: Add vmw_pvrdma driverAdit Ranadive
This patch series adds a driver for a paravirtual RDMA device. The device is developed for VMware's Virtual Machines and allows existing RDMA applications to continue to use existing Verbs API when deployed in VMs on ESXi. We recently did a presentation in the OFA Workshop [1] regarding this device. Description and RDMA Support ============================ The virtual device is exposed as a dual function PCIe device. One part is a virtual network device (VMXNet3) which provides networking properties like MAC, IP addresses to the RDMA part of the device. The networking properties are used to register GIDs required by RDMA applications to communicate. These patches add support and the all required infrastructure for letting applications use such a device. We support the mandatory Verbs API as well as the base memory management extensions (Local Inv, Send with Inv and Fast Register Work Requests). We currently support both Reliable Connected and Unreliable Datagram QPs but do not support Shared Receive Queues (SRQs). Also, we support the following types of Work Requests: o Send/Receive (with or without Immediate Data) o RDMA Write (with or without Immediate Data) o RDMA Read o Local Invalidate o Send with Invalidate o Fast Register Work Requests This version only adds support for version 1 of RoCE. We will add RoCEv2 support in a future patch. We do support registration of both MAC-based and IP-based GIDs. I have also created a git tree for our user-level driver [2]. Testing ======= We have tested this internally for various types of Guest OS - Red Hat, Centos, Ubuntu 12.04/14.04/16.04, Oracle Enterprise Linux, SLES 12 using backported versions of this driver. The tests included several runs of the performance tests (included with OFED), Intel MPI PingPong benchmark on OpenMPI, krping for FRWRs. Mellanox has been kind enough to test the backported version of the driver internally on their hardware using a VMware provided ESX build. I have also applied and tested this with Doug's k.o/for-4.9 branch (commit 5603910b). Note, that this patch series should be applied all together. I split out the commits so that it may be easier to review. PVRDMA Resources ================ [1] OFA Workshop Presentation - https://openfabrics.org/images/eventpresos/2016presentations/102parardma.pdf [2] Libpvrdma User-level library - http://git.openfabrics.org/?p=~aditr/libpvrdma.git;a=summary Reviewed-by: Jorgen Hansen <jhansen@vmware.com> Reviewed-by: George Zhang <georgezhang@vmware.com> Reviewed-by: Aditya Sarwade <asarwade@vmware.com> Reviewed-by: Bryan Tan <bryantan@vmware.com> Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Adit Ranadive <aditr@vmware.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2016-12-14Merge branches 'misc', 'qedr', 'reject-helpers', 'rxe' and 'srp' into merge-testDoug Ledford
2016-12-14Merge branch 'mlx' into merge-testDoug Ledford
2016-12-14Merge branch 'hfi1' into merge-testDoug Ledford
2016-12-14Merge branches 'chelsio', 'debug-cleanup', 'hns' and 'i40iw' into merge-testDoug Ledford
2016-12-14IB/mlx4: fix improper return valuePan Bian
If uhw->inlen is non-zero, the value of variable err is 0 if the copy succeeds. Then, if kzalloc() or kmalloc() returns a NULL pointer, it will return 0 to the callers. As a result, the callers cannot detect the errors. This patch fixes the bug, assign "-ENOMEM" to err before the NULL pointer checks, and remove the initialization of err at the beginning. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=189031 Signed-off-by: Pan Bian <bianpan2016@163.com> Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2016-12-14IB/ocrdma: fix bad initializationPan Bian
In function ocrdma_mbx_create_ah_tbl(), returns the value of status on errors. However, because status is initialized with 0, 0 will be returned even if on error paths. This patch initialize status with "-ENOMEM". Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=188831 Signed-off-by: Pan Bian <bianpan2016@163.com> Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2016-12-14infiniband: nes: return value of skb_linearize should be handledZhouyi Zhou
Return value of skb_linearize should be handled in function nes_netdev_start_xmit. Compiled in x86_64 Signed-off-by: Zhouyi Zhou <yizhouzhou@ict.ac.cn> Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com> Reviewed-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2016-12-14Merge tag 'acpi-urgent-4.10-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull two ACPI CPPC fixes from Rafael Wysocki: "One of them fixes a crash in KVM encountered by Sebastian in linux-next and introduced by a recent intel_pstate change that caused the driver to use the ACPI CPPC code and uncovered a missing NULL pointer check in it. The other one fixes a possible use-after-free in the same code area. Summary: - Fix a crash in KVM encountered in linux-next and introduced by a recent intel_pstate change that caused the driver to use the ACPI CPPC code and uncovered a missing NULL pointer check in it (Sebastian Andrzej Siewior). - Fix a possible use-after-free in the same code area (Rafael Wysocki)" * tag 'acpi-urgent-4.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: ACPI / CPPC: Fix per-CPU pointer management in acpi_cppc_processor_probe() ACPI / CPPC: Fix crash in acpi_cppc_processor_exit()
2016-12-14IB/core: fix unmap_sg argumentSebastian Ott
__ib_umem_release calls dma_unmap_sg with a different number of sg_entries than ib_umem_get uses for dma_map_sg. This might cause trouble for implementations that merge sglist entries and results in the following dma debug complaint: DMA-API: device driver frees DMA sg list with different entry count [map count=2] [unmap count=1] Fix it by using the correct value. Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Doug Ledford <dledford@redhat.com>