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| author |   Chao Gao <chao.gao@intel.com> | 2022-08-19 16:45:37 +0800 |
|---|---|---|
| committer |   Christoph Hellwig <hch@lst.de> | 2022-09-07 10:38:16 +0200 |
| commit | 3f0461613ebcdc8c4073e235053d06d5aa58750f (patch) | |
| tree | fb2bfd91fbf9fc1b9a55ddbdcce925c17a14a7df /include/linux/dma-mapping.h | |
| parent | dma-debug: improve search for partial syncs (diff) | |
| download | linux-dev-3f0461613ebcdc8c4073e235053d06d5aa58750f.tar.xz linux-dev-3f0461613ebcdc8c4073e235053d06d5aa58750f.zip | |
swiotlb: avoid potential left shift overflow
The second operand passed to slot_addr() is declared as int or unsigned int
in all call sites. The left-shift to get the offset of a slot can overflow
if swiotlb size is larger than 4G.
Convert the macro to an inline function and declare the second argument as
phys_addr_t to avoid the potential overflow.
Fixes: 26a7e094783d ("swiotlb: refactor swiotlb_tbl_map_single")
Signed-off-by: Chao Gao <chao.gao@intel.com>
Reviewed-by: Dongli Zhang <dongli.zhang@oracle.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to '')
0 files changed, 0 insertions, 0 deletions