linux-kernel - [PATCH 12/15] habanalabs: zero ts registration buff when allocated

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Date:   Thu, 27 Oct 2022 12:10:04 +0300
From:   Oded Gabbay <ogabbay@...nel.org>
To:     linux-kernel@...r.kernel.org
Cc:     farah kassabri <fkassabri@...ana.ai>
Subject: [PATCH 12/15] habanalabs: zero ts registration buff when allocated

From: farah kassabri <fkassabri@...ana.ai>

To avoid memory corruption in kernel memory while using timestamp
registration nodes, zero the kernel buff memory when its allocated.

Signed-off-by: farah kassabri <fkassabri@...ana.ai>
Reviewed-by: Oded Gabbay <ogabbay@...nel.org>
Signed-off-by: Oded Gabbay <ogabbay@...nel.org>
---
 drivers/misc/habanalabs/common/memory.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/misc/habanalabs/common/memory.c b/drivers/misc/habanalabs/common/memory.c
index 99b1d6ce26ae..541e1b6a2176 100644
--- a/drivers/misc/habanalabs/common/memory.c
+++ b/drivers/misc/habanalabs/common/memory.c
@@ -2109,7 +2109,7 @@ static int hl_ts_alloc_buf(struct hl_mmap_mem_buf *buf, gfp_t gfp, void *args)
 
 	/* Allocate the internal kernel buffer */
 	size = num_elements * sizeof(struct hl_user_pending_interrupt);
-	p = vmalloc(size);
+	p = vzalloc(size);
 	if (!p)
 		goto free_user_buff;
 
-- 
2.25.1