diff options
| -rw-r--r-- | src/cpu/x86/smm/smm_module_loader.c | 6 | ||||
| -rw-r--r-- | src/cpu/x86/smm/smm_module_loaderv2.c | 6 |
2 files changed, 12 insertions, 0 deletions
diff --git a/src/cpu/x86/smm/smm_module_loader.c b/src/cpu/x86/smm/smm_module_loader.c index fc1e1b3062..876fde6733 100644 --- a/src/cpu/x86/smm/smm_module_loader.c +++ b/src/cpu/x86/smm/smm_module_loader.c @@ -209,6 +209,12 @@ static int smm_module_setup_stub(void *smbase, size_t smm_size, smm_stub_size = rmodule_memory_size(&smm_stub); stub_entry_offset = rmodule_entry_offset(&smm_stub); + if (smm_stub_size > params->per_cpu_save_state_size) { + printk(BIOS_ERR, "SMM Module: SMM stub size larger than save state size\n"); + printk(BIOS_ERR, "SMM Module: Staggered entry points will overlap stub\n"); + return -1; + } + /* Assume the stub is always small enough to live within upper half of * SMRAM region after the save state space has been allocated. */ smm_stub_loc = &base[SMM_ENTRY_OFFSET]; diff --git a/src/cpu/x86/smm/smm_module_loaderv2.c b/src/cpu/x86/smm/smm_module_loaderv2.c index 22f336ec8d..3fa58717d8 100644 --- a/src/cpu/x86/smm/smm_module_loaderv2.c +++ b/src/cpu/x86/smm/smm_module_loaderv2.c @@ -134,6 +134,12 @@ static int smm_create_map(uintptr_t smbase, unsigned int num_cpus, return 0; } + if (stub_size > ss_size) { + printk(BIOS_ERR, "%s: Save state larger than SMM stub size\n", __func__); + printk(BIOS_ERR, " Decrease stub size or increase the size allocated for the save state\n"); + return 0; + } + for (i = 0; i < num_cpus; i++) { cpus[i].smbase = base; cpus[i].entry = base + smm_entry_offset; |