From: Hrushiraj Gandhi <hrushirajg23@gmail.com>
To: sakari.ailus@linux.intel.com, mchehab@kernel.org,
gregkh@linuxfoundation.org
Cc: linux-media@vger.kernel.org, linux-staging@lists.linux.dev,
linux-kernel@vger.kernel.org,
Hrushiraj Gandhi <hrushirajg23@gmail.com>
Subject: [PATCH] media: staging: ipu3: use vcalloc() instead of vzalloc() with multiply
Date: Tue, 1 Sep 2026 13:16:57 +0530 [thread overview]
Message-ID: <20260901074657.536299-1-hrushirajg23@gmail.com> (raw)
mmu->l2pts is sized as IPU3_PT_PTES * sizeof(*mmu->l2pts) by hand.
Use vcalloc() instead, which computes the size via the overflow-checked
size_mul() so a large enough count fails the allocation cleanly
instead of silently wrapping size_t into a too-small buffer.
No functional change.
Signed-off-by: Hrushiraj Gandhi <hrushirajg23@gmail.com>
---
drivers/staging/media/ipu3/ipu3-mmu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/staging/media/ipu3/ipu3-mmu.c b/drivers/staging/media/ipu3/ipu3-mmu.c
index b196a5815903..ab40502c06b8 100644
--- a/drivers/staging/media/ipu3/ipu3-mmu.c
+++ b/drivers/staging/media/ipu3/ipu3-mmu.c
@@ -464,7 +464,7 @@ struct imgu_mmu_info *imgu_mmu_init(struct device *parent, void __iomem *base)
* Allocate the array of L2PT CPU pointers, initialized to zero,
* which means the dummy L2PT allocated above.
*/
- mmu->l2pts = vzalloc(IPU3_PT_PTES * sizeof(*mmu->l2pts));
+ mmu->l2pts = vcalloc(IPU3_PT_PTES, sizeof(*mmu->l2pts));
if (!mmu->l2pts)
goto fail_l2pt;
reply other threads:[~2026-09-01 7:47 UTC|newest]
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