[PATCH AUTOSEL 5.9 10/23] habanalabs: free host huge va_range if not used

[Sasha Levin]

From: Ofir Bitton <obit...@habana.ai>

[ Upstream commit c8c39fbd01d42c30454e42c16bcd69c17260b90a ]

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 <obit...@habana.ai>
Reviewed-by: Oded Gabbay <ogab...@kernel.org>
Signed-off-by: Oded Gabbay <ogab...@kernel.org>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
 drivers/misc/habanalabs/common/memory.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/misc/habanalabs/common/memory.c 
b/drivers/misc/habanalabs/common/memory.c
index 5ff4688683fd3..7b839189c0161 100644
--- a/drivers/misc/habanalabs/common/memory.c
+++ b/drivers/misc/habanalabs/common/memory.c
@@ -1616,6 +1616,7 @@ 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;
        }
 
-- 
2.27.0