user/sven/linux.git/drivers/tee, branch v6.8.9

tee: optee: Fix kernel panic caused by incorrect error handling

2024-03-04T08:49:03Z

The error path while failing to register devices on the TEE bus has a bug leading to kernel panic as follows: [ 15.398930] Unable to handle kernel paging request at virtual address ffff07ed00626d7c [ 15.406913] Mem abort info: [ 15.409722] ESR = 0x0000000096000005 [ 15.413490] EC = 0x25: DABT (current EL), IL = 32 bits [ 15.418814] SET = 0, FnV = 0 [ 15.421878] EA = 0, S1PTW = 0 [ 15.425031] FSC = 0x05: level 1 translation fault [ 15.429922] Data abort info: [ 15.432813] ISV = 0, ISS = 0x00000005, ISS2 = 0x00000000 [ 15.438310] CM = 0, WnR = 0, TnD = 0, TagAccess = 0 [ 15.443372] GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 [ 15.448697] swapper pgtable: 4k pages, 48-bit VAs, pgdp=00000000d9e3e000 [ 15.455413] [ffff07ed00626d7c] pgd=1800000bffdf9003, p4d=1800000bffdf9003, pud=0000000000000000 [ 15.464146] Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP Commit 7269cba53d90 ("tee: optee: Fix supplicant based device enumeration") lead to the introduction of this bug. So fix it appropriately. Reported-by: Mikko Rapeli Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218542 Fixes: 7269cba53d90 ("tee: optee: Fix supplicant based device enumeration") Cc: stable@vger.kernel.org Signed-off-by: Sumit Garg Signed-off-by: Jens Wiklander

Merge tag 'docs-6.8' of git://git.lwn.net/linux

2024-01-12T03:46:52Z

Pull documentation update from Jonathan Corbet: "Another moderately busy cycle for documentation, including: - The minimum Sphinx requirement has been raised to 2.4.4, following a warning that was added in 6.2 - Some reworking of the Documentation/process front page to, hopefully, make it more useful - Various kernel-doc tweaks to, for example, make it deal properly with __counted_by annotations - We have also restored a warning for documentation of nonexistent structure members that disappeared a while back. That had the delightful consequence of adding some 600 warnings to the docs build. A sustained effort by Randy, Vegard, and myself has addressed almost all of those, bringing the documentation back into sync with the code. The fixes are going through the appropriate maintainer trees - Various improvements to the HTML rendered docs, including automatic links to Git revisions and a nice new pulldown to make translations easy to access - Speaking of translations, more of those for Spanish and Chinese ... plus the usual stream of documentation updates and typo fixes" * tag 'docs-6.8' of git://git.lwn.net/linux: (57 commits) MAINTAINERS: use tabs for indent of CONFIDENTIAL COMPUTING THREAT MODEL A reworked process/index.rst ring-buffer/Documentation: Add documentation on buffer_percent file Translated the RISC-V architecture boot documentation. Docs: remove mentions of fdformat from util-linux Docs/zh_CN: Fix the meaning of DEBUG to pr_debug() Documentation: move driver-api/dcdbas to userspace-api/ Documentation: move driver-api/isapnp to userspace-api/ Documentation/core-api : fix typo in workqueue Documentation/trace: Fixed typos in the ftrace FLAGS section kernel-doc: handle a void function without producing a warning scripts/get_abi.pl: ignore some temp files docs: kernel_abi.py: fix command injection scripts/get_abi: fix source path leak CREDITS, MAINTAINERS, docs/process/howto: Update man-pages' maintainer docs: translations: add translations links when they exist kernel-doc: Align quick help and the code MAINTAINERS: add reviewer for Spanish translations docs: ignore __counted_by attribute in structure definitions scripts: kernel-doc: Clarify missing struct member description ..

Merge tag 'tee-iov-iter-for-v6.8' of https://git.linaro.org/people/jens.wiklander/linux-tee into soc/drivers

2023-12-22T11:38:03Z

TEE: improve shared buffer registration compatibility * tag 'tee-iov-iter-for-v6.8' of https://git.linaro.org/people/jens.wiklander/linux-tee: tee: Use iov_iter to better support shared buffer registration Link: https://lore.kernel.org/r/20231214134139.GA3098718@rayden Signed-off-by: Arnd Bergmann

Merge tag 'optee-cleanup-for-v6.8' of https://git.linaro.org/people/jens.wiklander/linux-tee into soc/drivers

2023-12-22T11:37:09Z

OP-TEE cleanup - Remove a redundant custom workqueue in the OP-TEE driver. - Fix a missing description of an argument to optee_handle_rpc(). * tag 'optee-cleanup-for-v6.8' of https://git.linaro.org/people/jens.wiklander/linux-tee: optee: add missing description of RPC argument reference tee: optee: Remove redundant custom workqueue tee: optee: Fix supplicant based device enumeration Link: https://lore.kernel.org/r/20231214132237.GA3092763@rayden Signed-off-by: Arnd Bergmann

Merge tag 'kern-priv-shm-for-v6.8' of https://git.linaro.org/people/jens.wiklander/linux-tee into soc/drivers

2023-12-22T10:44:16Z

OP-TEE kernel private shared memory optimizations Optimize OP-TEE driver private shared memory allocated as dynamic shared memory. Both to handle larger than one page allocations and for more efficient memory usage. * tag 'kern-priv-shm-for-v6.8' of https://git.linaro.org/people/jens.wiklander/linux-tee: optee: allocate shared memory with alloc_pages_exact() optee: add page list to kernel private shared memory Link: https://lore.kernel.org/r/20231211115815.GA616539@rayden Signed-off-by: Arnd Bergmann

tee: Use iov_iter to better support shared buffer registration

2023-12-13T06:23:22Z

Currently it's not possible to register kernel buffers with TEE which are allocated via vmalloc. Use iov_iter and associated helper functions to manage the page registration for all type of memories. Suggested-by: Christoph Hellwig Signed-off-by: Arnaud Pouliquen Reviewed-by: Sumit Garg Signed-off-by: Jens Wiklander

optee: add missing description of RPC argument reference

2023-12-11T14:02:12Z

Adds missing inline description comment for RPC optional arguments reference. Reported-by: kernel test robot Closes: https://lore.kernel.org/lkml/202310192021.fvb6JDOY-lkp@intel.com/ Signed-off-by: Etienne Carriere Reviewed-by: Sumit Garg Signed-off-by: Jens Wiklander

Documentation: Destage TEE subsystem documentation

2023-12-08T22:45:10Z

Add a separate documentation directory for TEE subsystem since it is a standalone subsystem which already offers devices consumed by multiple different subsystem drivers. Split overall TEE subsystem documentation modularly where: - The userspace API has been moved to Documentation/userspace-api/tee.rst. - The driver API has been moved to Documentation/driver-api/tee.rst. - The first module covers the overview of TEE subsystem. - The further modules are dedicated to different TEE implementations like: - OP-TEE - AMD-TEE - and so on for future TEE implementation support. Acked-by: Rijo Thomas Acked-by: Jens Wiklander Signed-off-by: Sumit Garg Signed-off-by: Jonathan Corbet Link: https://lore.kernel.org/r/20231128072352.866859-1-sumit.garg@linaro.org

optee: allocate shared memory with alloc_pages_exact()

2023-12-04T13:48:42Z

Allocate memory to share with the secure world using alloc_pages_exact() instead of alloc_pages() for more efficient memory usage. Reviewed-by: Sumit Garg Signed-off-by: Jens Wiklander

optee: add page list to kernel private shared memory

2023-12-04T13:47:17Z

Until now has kernel private shared memory allocated as dynamic shared memory (not from the static shared memory pool) been returned without a list of physical pages on allocations via RPC. To support allocations larger than one page add a list of physical pages. Reviewed-by: Sumit Garg Signed-off-by: Jens Wiklander