Re: [PATCH v3] sched_ext: Use kvzalloc for large exit_dump allocation

On Tue, Apr 08, 2025 at 09:50:42AM -0700, Breno Leitao wrote:

Replace kzalloc with kvzalloc for the exit_dump buffer allocation, which can require large contiguous memory depending on the implementation. This change prevents allocation failures by allowing the system to fall back to vmalloc when contiguous memory allocation fails.

Since this buffer is only used for debugging purposes, physical memory contiguity is not required, making vmalloc a suitable alternative.

Cc: stable@vger.kernel.org Fixes: 07814a9439a3b0 ("sched_ext: Print debug dump after an error exit") Suggested-by: Rik van Riel riel@surriel.com Signed-off-by: Breno Leitao leitao@debian.org Acked-by: Andrea Righi arighi@nvidia.com

Applied to sched_ext/for-6.15-fixes.

Thanks.