diff options
| author | Andrew Bresticker <abrestic@rivosinc.com> | 2024-02-02 19:07:03 +0100 |
|---|---|---|
| committer | Ard Biesheuvel <ardb@kernel.org> | 2024-02-02 19:31:24 +0100 |
| commit | de1034b38a346ef6be25fe8792f5d1e0684d5ff4 (patch) | |
| tree | 80e4fa4a5ae0717606a2b130f1c9f749261aada8 /drivers/firmware | |
| parent | efi/libstub: Add one kernel-doc comment (diff) | |
| download | linux-de1034b38a346ef6be25fe8792f5d1e0684d5ff4.tar.xz linux-de1034b38a346ef6be25fe8792f5d1e0684d5ff4.zip | |
efi: runtime: Fix potential overflow of soft-reserved region size
md_size will have been narrowed if we have >= 4GB worth of pages in a
soft-reserved region.
Signed-off-by: Andrew Bresticker <abrestic@rivosinc.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Diffstat (limited to 'drivers/firmware')
| -rw-r--r-- | drivers/firmware/efi/arm-runtime.c | 2 | ||||
| -rw-r--r-- | drivers/firmware/efi/riscv-runtime.c | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/drivers/firmware/efi/arm-runtime.c b/drivers/firmware/efi/arm-runtime.c index 83f5bb57fa4c..83092d93f36a 100644 --- a/drivers/firmware/efi/arm-runtime.c +++ b/drivers/firmware/efi/arm-runtime.c @@ -107,7 +107,7 @@ static int __init arm_enable_runtime_services(void) efi_memory_desc_t *md; for_each_efi_memory_desc(md) { - int md_size = md->num_pages << EFI_PAGE_SHIFT; + u64 md_size = md->num_pages << EFI_PAGE_SHIFT; struct resource *res; if (!(md->attribute & EFI_MEMORY_SP)) diff --git a/drivers/firmware/efi/riscv-runtime.c b/drivers/firmware/efi/riscv-runtime.c index 09525fb5c240..01f0f90ea418 100644 --- a/drivers/firmware/efi/riscv-runtime.c +++ b/drivers/firmware/efi/riscv-runtime.c @@ -85,7 +85,7 @@ static int __init riscv_enable_runtime_services(void) efi_memory_desc_t *md; for_each_efi_memory_desc(md) { - int md_size = md->num_pages << EFI_PAGE_SHIFT; + u64 md_size = md->num_pages << EFI_PAGE_SHIFT; struct resource *res; if (!(md->attribute & EFI_MEMORY_SP)) |