linux-kernel - [PATCH 03/30] habanalabs: fix possible memory leak in MMU DR fini

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Date:   Sat, 22 Jan 2022 21:57:04 +0200
From:   Oded Gabbay <ogabbay@...nel.org>
To:     linux-kernel@...r.kernel.org
Cc:     Ohad Sharabi <osharabi@...ana.ai>
Subject: [PATCH 03/30] habanalabs: fix possible memory leak in MMU DR fini

From: Ohad Sharabi <osharabi@...ana.ai>

This patch fixes what seems to be copy paste error.

We will have a memory leak if the host-resident shadow is NULL (which
will likely happen as the DR and HR are not dependent).

Signed-off-by: Ohad Sharabi <osharabi@...ana.ai>
Reviewed-by: Oded Gabbay <ogabbay@...nel.org>
Signed-off-by: Oded Gabbay <ogabbay@...nel.org>
---
 drivers/misc/habanalabs/common/mmu/mmu_v1.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/misc/habanalabs/common/mmu/mmu_v1.c b/drivers/misc/habanalabs/common/mmu/mmu_v1.c
index 6134b6ae7615..3cadef97817d 100644
--- a/drivers/misc/habanalabs/common/mmu/mmu_v1.c
+++ b/drivers/misc/habanalabs/common/mmu/mmu_v1.c
@@ -467,7 +467,7 @@ static void hl_mmu_v1_fini(struct hl_device *hdev)
 {
 	/* MMU H/W fini was already done in device hw_fini() */
 
-	if (!ZERO_OR_NULL_PTR(hdev->mmu_priv.hr.mmu_shadow_hop0)) {
+	if (!ZERO_OR_NULL_PTR(hdev->mmu_priv.dr.mmu_shadow_hop0)) {
 		kvfree(hdev->mmu_priv.dr.mmu_shadow_hop0);
 		gen_pool_destroy(hdev->mmu_priv.dr.mmu_pgt_pool);
 
-- 
2.25.1