linux-dev/drivers/vdpa, branch linus/master

vduse: Fix NULL pointer dereference on sysfs access

2022-06-08T12:56:03Z

The control device has no drvdata. So we will get a NULL pointer dereference when accessing control device's msg_timeout attribute via sysfs: [ 132.841881][ T3644] BUG: kernel NULL pointer dereference, address: 00000000000000f8 [ 132.850619][ T3644] RIP: 0010:msg_timeout_show (drivers/vdpa/vdpa_user/vduse_dev.c:1271) [ 132.869447][ T3644] dev_attr_show (drivers/base/core.c:2094) [ 132.870215][ T3644] sysfs_kf_seq_show (fs/sysfs/file.c:59) [ 132.871164][ T3644] ? device_remove_bin_file (drivers/base/core.c:2088) [ 132.872082][ T3644] kernfs_seq_show (fs/kernfs/file.c:164) [ 132.872838][ T3644] seq_read_iter (fs/seq_file.c:230) [ 132.873578][ T3644] ? __vmalloc_area_node (mm/vmalloc.c:3041) [ 132.874532][ T3644] kernfs_fop_read_iter (fs/kernfs/file.c:238) [ 132.875513][ T3644] __kernel_read (fs/read_write.c:440 (discriminator 1)) [ 132.876319][ T3644] kernel_read (fs/read_write.c:459) [ 132.877129][ T3644] kernel_read_file (fs/kernel_read_file.c:94) [ 132.877978][ T3644] kernel_read_file_from_fd (include/linux/file.h:45 fs/kernel_read_file.c:186) [ 132.879019][ T3644] __do_sys_finit_module (kernel/module.c:4207) [ 132.879930][ T3644] __ia32_sys_finit_module (kernel/module.c:4189) [ 132.880930][ T3644] do_int80_syscall_32 (arch/x86/entry/common.c:112 arch/x86/entry/common.c:132) [ 132.881847][ T3644] entry_INT80_compat (arch/x86/entry/entry_64_compat.S:419) To fix it, don't create the unneeded attribute for control device anymore. Fixes: c8a6153b6c59 ("vduse: Introduce VDUSE - vDPA Device in Userspace") Reported-by: kernel test robot Cc: stable@vger.kernel.org Signed-off-by: Xie Yongji Message-Id: <20220426073656.229-1-xieyongji@bytedance.com> Signed-off-by: Michael S. Tsirkin

vdpa/mlx5: clean up indenting in handle_ctrl_vlan()

2022-06-08T12:56:03Z

These lines were supposed to be indented. Signed-off-by: Dan Carpenter Message-Id: Signed-off-by: Michael S. Tsirkin Acked-by: Eli Cohen Acked-by: Si-Wei Liu

vdpa/mlx5: fix error code for deleting vlan

2022-06-08T12:56:03Z

Return success if we were able to delete a vlan. The current code always returns failure. Fixes: baf2ad3f6a98 ("vdpa/mlx5: Add RX MAC VLAN filter support") Signed-off-by: Dan Carpenter Message-Id: Signed-off-by: Michael S. Tsirkin Acked-by: Eli Cohen Acked-by: Si-Wei Liu

vdpa/mlx5: Fix syntax errors in comments

2022-06-08T12:56:03Z

Delete the redundant word 'is'. Signed-off-by: Xiang wangx Message-Id: <20220604143858.16073-1-wangxiang@cdjrlc.com> Signed-off-by: Michael S. Tsirkin Acked-by: Jason Wang

Merge tag 'driver-core-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

2022-06-03T18:48:47Z

Pull driver core updates from Greg KH: "Here is the set of driver core changes for 5.19-rc1. Lots of tiny driver core changes and cleanups happened this cycle, but the two major things are: - firmware_loader reorganization and additions including the ability to have XZ compressed firmware images and the ability for userspace to initiate the firmware load when it needs to, instead of being always initiated by the kernel. FPGA devices specifically want this ability to have their firmware changed over the lifetime of the system boot, and this allows them to work without having to come up with yet-another-custom-uapi interface for loading firmware for them. - physical location support added to sysfs so that devices that know this information, can tell userspace where they are located in a common way. Some ACPI devices already support this today, and more bus types should support this in the future. Smaller changes include: - driver_override api cleanups and fixes - error path cleanups and fixes - get_abi script fixes - deferred probe timeout changes. It's that last change that I'm the most worried about. It has been reported to cause boot problems for a number of systems, and I have a tested patch series that resolves this issue. But I didn't get it merged into my tree before 5.18-final came out, so it has not gotten any linux-next testing. I'll send the fixup patches (there are 2) as a follow-on series to this pull request. All have been tested in linux-next for weeks, with no reported issues other than the above-mentioned boot time-outs" * tag 'driver-core-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (55 commits) driver core: fix deadlock in __device_attach kernfs: Separate kernfs_pr_cont_buf and rename_lock. topology: Remove unused cpu_cluster_mask() driver core: Extend deferred probe timeout on driver registration MAINTAINERS: add Russ Weight as a firmware loader maintainer driver: base: fix UAF when driver_attach failed test_firmware: fix end of loop test in upload_read_show() driver core: location: Add "back" as a possible output for panel driver core: location: Free struct acpi_pld_info *pld driver core: Add "*" wildcard support to driver_async_probe cmdline param driver core: location: Check for allocations failure arch_topology: Trace the update thermal pressure kernfs: Rename kernfs_put_open_node to kernfs_unlink_open_file. export: fix string handling of namespace in EXPORT_SYMBOL_NS rpmsg: use local 'dev' variable rpmsg: Fix calling device_lock() on non-initialized device firmware_loader: describe 'module' parameter of firmware_upload_register() firmware_loader: Move definitions from sysfs_upload.h to sysfs.h firmware_loader: Fix configs for sysfs split selftests: firmware: Add firmware upload selftests ...

vdpa: ifcvf: set pci driver data in probe

2022-06-01T06:16:38Z

We should set the pci driver data in probe instead of the vdpa device adding callback. Otherwise if no vDPA device is created we will lose the pointer to the management device. Fixes: 6b5df347c6482 ("vDPA/ifcvf: implement management netlink framework for ifcvf") Tested-by: Zheyu Ma Signed-off-by: Jason Wang Message-Id: <20220524055557.1938-1-jasowang@redhat.com> Signed-off-by: Michael S. Tsirkin

vdpa/mlx5: Add RX MAC VLAN filter support

2022-06-01T06:16:38Z

Support HW offloaded filtering of MAC/VLAN packets. To allow that, we add a handler to handle VLAN configurations coming through the control VQ. Two operations are supported. 1. Adding VLAN - in this case, an entry will be added to the RX flow table that will allow the combination of the MAC/VLAN to be forwarded to the TIR. 2. Removing VLAN - will remove the entry from the flow table, effectively blocking such packets from going through. Currently the control VQ does not propagate changes to the MAC of the VLAN device so we always use the MAC of the parent device. Examples: 1. Create vlan device: $ ip link add link ens1 name ens1.8 type vlan id 8 Signed-off-by: Eli Cohen Message-Id: <20220411122942.225717-4-elic@nvidia.com> Signed-off-by: Michael S. Tsirkin Acked-by: Jason Wang

vdpa/mlx5: Remove flow counter from steering

2022-06-01T06:16:38Z

The flow counter has been introduced in early versions of the driver to aid in debugging. It is no longer needed and can harm performance. Remove it. Signed-off-by: Eli Cohen Message-Id: <20220411122942.225717-2-elic@nvidia.com> Signed-off-by: Michael S. Tsirkin

vdpasim: Off by one in vdpasim_set_group_asid()

2022-05-31T16:45:10Z

The > comparison needs to be >= to prevent an out of bounds access of the vdpasim->iommu[] array. The vdpasim->iommu[] is allocated in vdpasim_create() and it has vdpasim->dev_attr.nas elements. Fixes: 87e5afeac247 ("vdpasim: control virtqueue support") Signed-off-by: Dan Carpenter Message-Id: Signed-off-by: Michael S. Tsirkin Acked-by: Jason Wang

vdpasim: allow to enable a vq repeatedly

2022-05-31T16:45:09Z

Code must be resilient to enable a queue many times. At the moment the queue is resetting so it's definitely not the expected behavior. v2: set vq->ready = 0 at disable. Fixes: 2c53d0f64c06 ("vdpasim: vDPA device simulator") Cc: stable@vger.kernel.org Signed-off-by: Eugenio Pérez Message-Id: <20220519145919.772896-1-eperezma@redhat.com> Signed-off-by: Michael S. Tsirkin Reviewed-by: Stefano Garzarella