[PATCH AUTOSEL 6.1 18/26] habanalabs: zero ts registration buff when allocated

Sasha Levin
2022-12-24T01:32:01Z

From: farah kassabri <fkassabri@habana.ai>

[ Upstream commit 679e968908a4997d02c2a7df294e97b066f9149f ]

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@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.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 ef28f3b37b93..9763188dd7b0 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;

--
2.35.1