duff/android_kernel_motorola_sm6225
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UPSTREAM: udmabuf: fix a buf size overflow issue during udmabuf creation

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[ Upstream commit 021ba7f1babd029e714d13a6bf2571b08af96d0f ]

by casting size_limit_mb to u64  when calculate pglimit.

Change-Id: Ib93ddee561a0cee14b7acf9dc5b8fa674b634fa6
Signed-off-by: Xiaogang Chen<Xiaogang.Chen@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250321164126.329638-1-xiaogang.chen@amd.com
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Xiaogang Chen authored and Thomas Turner committed 2026-05-31 11:15:37 +01:00
1 parent e77281774a
commit 8bb500a064
1 file changed
+1 -1
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drivers/dma-buf/udmabuf.c
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@@ -138,7 +138,7 @@ static long udmabuf_create(const struct udmabuf_create_list *head,
if (!ubuf)
return -ENOMEM;
pglimit = (size_limit_mb * 1024 * 1024) >> PAGE_SHIFT;
pglimit = ((u64)size_limit_mb * 1024 * 1024) >> PAGE_SHIFT;
for (i = 0; i < head->count; i++) {
if (!IS_ALIGNED(list[i].offset, PAGE_SIZE))
goto err;