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b8ae2640f9
This commit fixes a potential race condition in the userqueue fence signaling mechanism by replacing dma_fence_is_signaled_locked() with dma_fence_is_signaled(). The issue occurred because: 1. dma_fence_is_signaled_locked() should only be used when holding the fence's individual lock, not just the fence list lock 2. Using the locked variant without the proper fence lock could lead to double-signaling scenarios: - Hardware completion signals the fence - Software path also tries to signal the same fence By using dma_fence_is_signaled() instead, we properly handle the locking hierarchy and avoid the race condition while still maintaining the necessary synchronization through the fence_list_lock. v2: drop the comment (Christian) Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Jesse Zhang <Jesse.Zhang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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 reStructuredText 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.