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| author | Xiaogang Chen <xiaogang.chen@amd.com> | 2025-03-21 11:41:26 -0500 |
|---|---|---|
| committer | Christian König <christian.koenig@amd.com> | 2025-03-24 14:19:40 +0100 |
| commit | 021ba7f1babd029e714d13a6bf2571b08af96d0f (patch) | |
| tree | b55023d75e025cbfe9e11ef8a532b8f5812a5db8 /drivers/dma-buf | |
| parent | cb83f4b965a66d85e9a03621ef3b22c044f4a033 (diff) | |
| download | linux-021ba7f1babd029e714d13a6bf2571b08af96d0f.tar.gz linux-021ba7f1babd029e714d13a6bf2571b08af96d0f.tar.bz2 linux-021ba7f1babd029e714d13a6bf2571b08af96d0f.zip | |
udmabuf: fix a buf size overflow issue during udmabuf creation
by casting size_limit_mb to u64 when calculate pglimit.
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>
Diffstat (limited to 'drivers/dma-buf')
| -rw-r--r-- | drivers/dma-buf/udmabuf.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/dma-buf/udmabuf.c b/drivers/dma-buf/udmabuf.c index cc7398cc17d6..e74e36a8ecda 100644 --- a/drivers/dma-buf/udmabuf.c +++ b/drivers/dma-buf/udmabuf.c @@ -393,7 +393,7 @@ static long udmabuf_create(struct miscdevice *device, 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++) { pgoff_t subpgcnt; |