diff options
Diffstat (limited to 'drivers/firmware/efi/libstub')
| -rw-r--r-- | drivers/firmware/efi/libstub/Makefile | 11 | ||||
| -rw-r--r-- | drivers/firmware/efi/libstub/screen_info.c | 2 | ||||
| -rw-r--r-- | drivers/firmware/efi/libstub/x86-stub.c | 25 |
3 files changed, 18 insertions, 20 deletions
diff --git a/drivers/firmware/efi/libstub/Makefile b/drivers/firmware/efi/libstub/Makefile index 31eb1e287c..06f0428a72 100644 --- a/drivers/firmware/efi/libstub/Makefile +++ b/drivers/firmware/efi/libstub/Makefile @@ -56,17 +56,6 @@ KBUILD_CFLAGS := $(filter-out $(CC_FLAGS_CFI), $(KBUILD_CFLAGS)) # disable LTO KBUILD_CFLAGS := $(filter-out $(CC_FLAGS_LTO), $(KBUILD_CFLAGS)) -GCOV_PROFILE := n -# Sanitizer runtimes are unavailable and cannot be linked here. -KASAN_SANITIZE := n -KCSAN_SANITIZE := n -KMSAN_SANITIZE := n -UBSAN_SANITIZE := n -OBJECT_FILES_NON_STANDARD := y - -# Prevents link failures: __sanitizer_cov_trace_pc() is not linked in. -KCOV_INSTRUMENT := n - lib-y := efi-stub-helper.o gop.o secureboot.o tpm.o \ file.o mem.o random.o randomalloc.o pci.o \ skip_spaces.o lib-cmdline.o lib-ctype.o \ diff --git a/drivers/firmware/efi/libstub/screen_info.c b/drivers/firmware/efi/libstub/screen_info.c index a51ec201ca..5d3a1e32d1 100644 --- a/drivers/firmware/efi/libstub/screen_info.c +++ b/drivers/firmware/efi/libstub/screen_info.c @@ -32,6 +32,8 @@ struct screen_info *__alloc_screen_info(void) if (status != EFI_SUCCESS) return NULL; + memset(si, 0, sizeof(*si)); + status = efi_bs_call(install_configuration_table, &screen_info_guid, si); if (status == EFI_SUCCESS) diff --git a/drivers/firmware/efi/libstub/x86-stub.c b/drivers/firmware/efi/libstub/x86-stub.c index 1983fd3bf3..99d39eda51 100644 --- a/drivers/firmware/efi/libstub/x86-stub.c +++ b/drivers/firmware/efi/libstub/x86-stub.c @@ -469,11 +469,12 @@ void __noreturn efi_stub_entry(efi_handle_t handle, efi_status_t __efiapi efi_pe_entry(efi_handle_t handle, efi_system_table_t *sys_table_arg) { - static struct boot_params boot_params __page_aligned_bss; - struct setup_header *hdr = &boot_params.hdr; efi_guid_t proto = LOADED_IMAGE_PROTOCOL_GUID; + struct boot_params *boot_params; + struct setup_header *hdr; int options_size = 0; efi_status_t status; + unsigned long alloc; char *cmdline_ptr; if (efi_is_native()) @@ -491,6 +492,13 @@ efi_status_t __efiapi efi_pe_entry(efi_handle_t handle, efi_exit(handle, status); } + status = efi_allocate_pages(PARAM_SIZE, &alloc, ULONG_MAX); + if (status != EFI_SUCCESS) + efi_exit(handle, status); + + boot_params = memset((void *)alloc, 0x0, PARAM_SIZE); + hdr = &boot_params->hdr; + /* Assign the setup_header fields that the kernel actually cares about */ hdr->root_flags = 1; hdr->vid_mode = 0xffff; @@ -500,17 +508,16 @@ efi_status_t __efiapi efi_pe_entry(efi_handle_t handle, /* Convert unicode cmdline to ascii */ cmdline_ptr = efi_convert_cmdline(image, &options_size); - if (!cmdline_ptr) - goto fail; + if (!cmdline_ptr) { + efi_free(PARAM_SIZE, alloc); + efi_exit(handle, EFI_OUT_OF_RESOURCES); + } efi_set_u64_split((unsigned long)cmdline_ptr, &hdr->cmd_line_ptr, - &boot_params.ext_cmd_line_ptr); + &boot_params->ext_cmd_line_ptr); - efi_stub_entry(handle, sys_table_arg, &boot_params); + efi_stub_entry(handle, sys_table_arg, boot_params); /* not reached */ - -fail: - efi_exit(handle, status); } static void add_e820ext(struct boot_params *params, |