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| author | Yidi Lin <yidilin@google.com> | 2026-07-20 13:21:01 +0800 |
|---|---|---|
| committer | Yidi Lin <yidilin@google.com> | 2026-08-05 00:51:14 +0800 |
| commit | b062d78c220d710b3f985afde98b7300ee49fec0 (patch) | |
| tree | 9fbb4641060cad1e58837d43e2ed2c7c114fd7d1 /services | |
| parent | 4b4636774574635ccaf82b2aa540e451b8374a26 (diff) | |
| download | arm-trusted-firmware-b062d78c220d710b3f985afde98b7300ee49fec0.tar.gz arm-trusted-firmware-b062d78c220d710b3f985afde98b7300ee49fec0.zip | |
fix(optee): correct operand order in dynamic map size calculation
When data_pa is not aligned to a page boundary, mapped_data_pa
rounds downwards. Subtracting data_pa directly from mapped_data_pa
causes underflow when computing the additional offset needed to
cover the alignment gap.
Reorder operands to (data_pa - mapped_data_pa) so data_map_size
correctly spans the full region across page alignment boundaries.
Change-Id: Ie355bb0fb8450c86b5eb3ea9cbad02c42b5e63dc
Signed-off-by: Yidi Lin <yidilin@google.com>
Diffstat (limited to 'services')
| -rw-r--r-- | services/spd/opteed/opteed_main.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/services/spd/opteed/opteed_main.c b/services/spd/opteed/opteed_main.c index 6c0ccfd94..afa3263c6 100644 --- a/services/spd/opteed/opteed_main.c +++ b/services/spd/opteed/opteed_main.c @@ -516,7 +516,7 @@ static int32_t opteed_handle_smc_load(uint64_t data_size, uint64_t data_pa) mapped_data_pa = page_align(data_pa, DOWN); mapped_data_va = mapped_data_pa; - data_map_size = page_align(data_size + (mapped_data_pa - data_pa), UP); + data_map_size = page_align(data_size + (data_pa - mapped_data_pa), UP); /* * We do not validate the passed in address because we are trusting the |