habanalabs: free host huge va_range if not used

If huge range is not valid, driver uses the host range also for
huge page allocations, but driver never frees its allocation.
This introduces a memory leak every time a user closes its context.

Signed-off-by: Ofir Bitton <obitton@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>

diff --git a/drivers/misc/habanalabs/common/memory.c b/drivers/misc/habanalabs/common/memory.c
index 84227819e4d14d5d71064d902f20ae4e0dd876de..bfe223abf142672de217cdb6eaaccaeeaaf82f74 100644 (file)
--- a/drivers/misc/habanalabs/common/memory.c
+++ b/drivers/misc/habanalabs/common/memory.c
@@ -1626,6 +1626,7 @@ static int vm_ctx_init_with_ranges(struct hl_ctx *ctx,
                        goto host_hpage_range_err;
                }
        } else {
+               kfree(ctx->host_huge_va_range);
                ctx->host_huge_va_range = ctx->host_va_range;
        }