CVE-2024-56695

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> drm/amdkfd: Use dynamic allocation for CU occupancy array in &amp;#39;kfd_get_cu_occupancy()&amp;#39;<br /> <br /> The `kfd_get_cu_occupancy` function previously declared a large<br /> `cu_occupancy` array as a local variable, which could lead to stack<br /> overflows due to excessive stack usage. This commit replaces the static<br /> array allocation with dynamic memory allocation using `kcalloc`,<br /> thereby reducing the stack size.<br /> <br /> This change avoids the risk of stack overflows in kernel space, in<br /> scenarios where `AMDGPU_MAX_QUEUES` is large. The allocated memory is<br /> freed using `kfree` before the function returns to prevent memory<br /> leaks.<br /> <br /> Fixes the below with gcc W=1:<br /> drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_process.c: In function ‘kfd_get_cu_occupancy’:<br /> drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_process.c:322:1: warning: the frame size of 1056 bytes is larger than 1024 bytes [-Wframe-larger-than=]<br /> 322 | }<br /> | ^