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2d1ac2f2e2
[ Upstream commit 299bf602b3f92f1456aef59c6413591fb02e762a ] The following warning appears during the CCP module re-initialization: [ 140.965403] sysfs: cannot create duplicate filename '/devices/pci0000:00/0000:00:07.1/0000:03:00.2/dma/dma0chan0' [ 140.975736] CPU: 0 PID: 388 Comm: kworker/0:2 Kdump: loaded Not tainted 6.2.0-0.rc2.18.eln124.x86_64 #1 [ 140.985185] Hardware name: HPE ProLiant DL325 Gen10/ProLiant DL325 Gen10, BIOS A41 07/17/2020 [ 140.993761] Workqueue: events work_for_cpu_fn [ 140.998151] Call Trace: [ 141.000613] <TASK> [ 141.002726] dump_stack_lvl+0x33/0x46 [ 141.006415] sysfs_warn_dup.cold+0x17/0x23 [ 141.010542] sysfs_create_dir_ns+0xba/0xd0 [ 141.014670] kobject_add_internal+0xba/0x260 [ 141.018970] kobject_add+0x81/0xb0 [ 141.022395] device_add+0xdc/0x7e0 [ 141.025822] ? complete_all+0x20/0x90 [ 141.029510] __dma_async_device_channel_register+0xc9/0x130 [ 141.035119] dma_async_device_register+0x19e/0x3b0 [ 141.039943] ccp_dmaengine_register+0x334/0x3f0 [ccp] [ 141.045042] ccp5_init+0x662/0x6a0 [ccp] [ 141.049000] ? devm_kmalloc+0x40/0xd0 [ 141.052688] ccp_dev_init+0xbb/0xf0 [ccp] [ 141.056732] ? __pci_set_master+0x56/0xd0 [ 141.060768] sp_init+0x70/0x90 [ccp] [ 141.064377] sp_pci_probe+0x186/0x1b0 [ccp] [ 141.068596] local_pci_probe+0x41/0x80 [ 141.072374] work_for_cpu_fn+0x16/0x20 [ 141.076145] process_one_work+0x1c8/0x380 [ 141.080181] worker_thread+0x1ab/0x380 [ 141.083953] ? __pfx_worker_thread+0x10/0x10 [ 141.088250] kthread+0xda/0x100 [ 141.091413] ? __pfx_kthread+0x10/0x10 [ 141.095185] ret_from_fork+0x2c/0x50 [ 141.098788] </TASK> [ 141.100996] kobject_add_internal failed for dma0chan0 with -EEXIST, don't try to register things with the same name in the same directory. [ 141.113703] ccp 0000:03:00.2: ccp initialization failed The /dma/dma0chan0 sysfs file is not removed since dma_chan object has been released in ccp_dma_release() before releasing dma device. A correct procedure would be: release dma channels first => unregister dma device => release ccp dma object. Link: https://bugzilla.kernel.org/show_bug.cgi?id=216888 Fixes: 68dbe80f5b51 ("crypto: ccp - Release dma channels before dmaengine unrgister") Tested-by: Vladis Dronov <vdronov@redhat.com> Signed-off-by: Koba Ko <koba.ko@canonical.com> Reviewed-by: Vladis Dronov <vdronov@redhat.com> Acked-by: Tom Lendacky <thomas.lendacky@amd.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Sasha Levin <sashal@kernel.org> |
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.