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Accepting request 962324 from home:michael-chang:gcc12:grub2

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- Fix GCC 12 build failure (bsc#1196546)
  * 0001-mkimage-Fix-dangling-pointer-may-be-used-error.patch
  * 0002-Fix-Werror-array-bounds-array-subscript-0-is-outside.patch
  * 0003-reed_solomon-Fix-array-subscript-0-is-outside-array-.patch
- Revised
  * grub2-btrfs-01-add-ability-to-boot-from-subvolumes.patch
  * 0002-ieee1275-powerpc-enables-device-mapper-discovery.patch

OBS-URL: https://build.opensuse.org/request/show/962324
OBS-URL: https://build.opensuse.org/package/show/Base:System/grub2?expand=0&rev=408
This commit is contained in:
Michael Chang 2022-03-18 07:29:19 +00:00 committed by Git OBS Bridge
parent b873cb8d2f
commit 91bf25e435
7 changed files with 718 additions and 33 deletions
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86
0001-mkimage-Fix-dangling-pointer-may-be-used-error.patch Normal file
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@ -0,0 +1,86 @@
From a0fcb7f7075901aa12079c39a534837755652d9d Mon Sep 17 00:00:00 2001
From: Michael Chang <mchang@suse.com>
Date: Wed, 16 Mar 2022 14:17:32 +0800
Subject: [PATCH 1/3] mkimage: Fix dangling pointer may be used error
The warning is real as long as dangling pointer to 'tmp_' may be used if
o32 and o64 are both null. However that is not going to happen and can
be ignored safely because the PE_OHDR is being used in a context that
either o32 or o64 must have been properly initialized. Sadly compiler
seems not to always optimize that unused _tmp away so explicit
suppression remain needed here.
../util/mkimage.c: In function 'grub_install_generate_image':
../util/mkimage.c:1422:41: error: dangling pointer to 'tmp_' may be used [-Werror=dangling-pointer=]
1422 | PE_OHDR (o32, o64, header_size) = grub_host_to_target32 (header_size);
../util/mkimage.c:857:28: note: 'tmp_' declared here
857 | __typeof__((o64)->field) tmp_; \
| ^~~~
Signed-off-by: Michael Chang <mchang@suse.com>
---
util/mkimage.c | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/util/mkimage.c b/util/mkimage.c
index 5a8021a213..659824c140 100644
--- a/util/mkimage.c
+++ b/util/mkimage.c
@@ -1419,6 +1419,10 @@ grub_install_generate_image (const char *dir, const char *prefix,
section = (struct grub_pe32_section_table *)(o64 + 1);
}
+#if __GNUC__ >= 12
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wdangling-pointer"
+#endif
PE_OHDR (o32, o64, header_size) = grub_host_to_target32 (header_size);
PE_OHDR (o32, o64, entry_addr) = grub_host_to_target32 (layout.start_address);
PE_OHDR (o32, o64, image_base) = 0;
@@ -1438,6 +1442,9 @@ grub_install_generate_image (const char *dir, const char *prefix,
/* The sections. */
PE_OHDR (o32, o64, code_base) = grub_host_to_target32 (vma);
PE_OHDR (o32, o64, code_size) = grub_host_to_target32 (layout.exec_size);
+#if __GNUC__ >= 12
+#pragma GCC diagnostic pop
+#endif
section = init_pe_section (image_target, section, ".text",
&vma, layout.exec_size,
image_target->section_align,
@@ -1447,10 +1454,17 @@ grub_install_generate_image (const char *dir, const char *prefix,
GRUB_PE32_SCN_MEM_READ);
scn_size = ALIGN_UP (layout.kernel_size - layout.exec_size, GRUB_PE32_FILE_ALIGNMENT);
+#if __GNUC__ >= 12
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wdangling-pointer"
+#endif
/* ALIGN_UP (sbat_size, GRUB_PE32_FILE_ALIGNMENT) is done earlier. */
PE_OHDR (o32, o64, data_size) = grub_host_to_target32 (scn_size + sbat_size +
ALIGN_UP (total_module_size,
GRUB_PE32_FILE_ALIGNMENT));
+#if __GNUC__ >= 12
+#pragma GCC diagnostic pop
+#endif
section = init_pe_section (image_target, section, ".data",
&vma, scn_size, image_target->section_align,
@@ -1481,8 +1495,15 @@ grub_install_generate_image (const char *dir, const char *prefix,
}
scn_size = layout.reloc_size;
+#if __GNUC__ >= 12
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wdangling-pointer"
+#endif
PE_OHDR (o32, o64, base_relocation_table.rva) = grub_host_to_target32 (vma);
PE_OHDR (o32, o64, base_relocation_table.size) = grub_host_to_target32 (scn_size);
+#if __GNUC__ >= 12
+#pragma GCC diagnostic pop
+#endif
memcpy (pe_img + raw_data, layout.reloc_section, scn_size);
init_pe_section (image_target, section, ".reloc",
&vma, scn_size, image_target->section_align,
--
2.34.1

533
0002-Fix-Werror-array-bounds-array-subscript-0-is-outside.patch Normal file
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@ -0,0 +1,533 @@
From 04de53cb4adc0ae6429b0715c3f1dd8a62ff9a0f Mon Sep 17 00:00:00 2001
From: Michael Chang <mchang@suse.com>
Date: Wed, 16 Mar 2022 17:05:01 +0800
Subject: [PATCH 2/3] Fix -Werror=array-bounds array subscript 0 is outside
array bounds
The grub is failing to build with gcc-12 in many places like this:
In function 'init_cbfsdisk',
inlined from 'grub_mod_init' at ../../grub-core/fs/cbfs.c:391:3:
../../grub-core/fs/cbfs.c:345:7: error: array subscript 0 is outside array bounds of 'grub_uint32_t[0]' {aka 'unsigned int[]'} [-Werror=array-bounds]
345 | ptr = *(grub_uint32_t *) 0xfffffffc;
| ~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
This is caused by gcc regression in 11/12 [1]. In a nut shell, the
warning is about detected invalid accesses at non-zero offsets to null
pointers. Since hardwired constant address is treated as NULL plus an
offset in the same underlying code, the warning is therefore triggered.
Instead of inserting #pragma all over the places where literal pointers
are accessed to avoid diagnosing array-bounds, we can try to borrow the
idea from linux kernel that the absolute_pointer macro [2][3] is used to
disconnect a pointer using literal address from it's original object,
hence gcc won't be able to make assumptions on the boundary while doing
pointer arithmetic. With that we can greatly reduce the code we have to
cover up by making initial literal pointer assignment to use the new
wrapper but not having to track everywhere literal pointers are
accessed. This also makes code looks cleaner.
[1]
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99578
[2]
https://elixir.bootlin.com/linux/v5.16.14/source/include/linux/compiler.h#L180
[3]
https://elixir.bootlin.com/linux/v5.16.14/source/include/linux/compiler-gcc.h#L31
Signed-off-by: Michael Chang <mchang@suse.com>
---
grub-core/bus/cs5536.c | 4 ++--
grub-core/commands/acpi.c | 4 ++--
grub-core/commands/efi/loadbios.c | 9 +++++----
grub-core/commands/i386/pc/drivemap.c | 9 ++++++---
grub-core/commands/i386/pc/sendkey.c | 12 ++++++------
grub-core/disk/i386/pc/biosdisk.c | 4 ++--
grub-core/fs/cbfs.c | 2 +-
grub-core/kern/i386/pc/acpi.c | 4 ++--
grub-core/kern/i386/pc/mmap.c | 2 +-
grub-core/loader/i386/multiboot_mbi.c | 2 +-
grub-core/loader/multiboot_mbi2.c | 4 ++--
grub-core/mmap/i386/pc/mmap.c | 26 +++++++++++++-------------
grub-core/net/drivers/i386/pc/pxe.c | 12 ++++++------
grub-core/term/i386/pc/console.c | 5 ++---
grub-core/term/i386/pc/vga_text.c | 6 +++---
grub-core/term/ns8250.c | 7 ++++++-
grub-core/video/i386/pc/vbe.c | 6 +++---
include/grub/compiler.h | 11 +++++++++++
18 files changed, 74 insertions(+), 55 deletions(-)
diff --git a/grub-core/bus/cs5536.c b/grub-core/bus/cs5536.c
index bb9aa27e5b..bccaeeeccb 100644
--- a/grub-core/bus/cs5536.c
+++ b/grub-core/bus/cs5536.c
@@ -331,8 +331,8 @@ grub_cs5536_init_geode (grub_pci_device_t dev)
{
volatile grub_uint32_t *oc;
- oc = grub_pci_device_map_range (dev, 0x05022000,
- GRUB_CS5536_USB_OPTION_REGS_SIZE);
+ oc = grub_absolute_pointer (grub_pci_device_map_range (dev, 0x05022000,
+ GRUB_CS5536_USB_OPTION_REGS_SIZE));
oc[GRUB_CS5536_USB_OPTION_REG_UOCMUX] =
(oc[GRUB_CS5536_USB_OPTION_REG_UOCMUX]
diff --git a/grub-core/commands/acpi.c b/grub-core/commands/acpi.c
index 1215f2a62e..4721730b39 100644
--- a/grub-core/commands/acpi.c
+++ b/grub-core/commands/acpi.c
@@ -168,7 +168,7 @@ grub_acpi_create_ebda (void)
struct grub_acpi_rsdp_v10 *v1;
struct grub_acpi_rsdp_v20 *v2;
- ebda = (grub_uint8_t *) (grub_addr_t) ((*((grub_uint16_t *)0x40e)) << 4);
+ ebda = (grub_uint8_t *) (grub_addr_t) ((*((grub_uint16_t *)grub_absolute_pointer(0x40e))) << 4);
grub_dprintf ("acpi", "EBDA @%p\n", ebda);
if (ebda)
ebda_kb_len = *(grub_uint16_t *) ebda;
@@ -298,7 +298,7 @@ grub_acpi_create_ebda (void)
*target = 0;
grub_dprintf ("acpi", "Switching EBDA\n");
- (*((grub_uint16_t *) 0x40e)) = ((grub_addr_t) targetebda) >> 4;
+ (*((grub_uint16_t *) grub_absolute_pointer(0x40e))) = ((grub_addr_t) targetebda) >> 4;
grub_dprintf ("acpi", "EBDA switched\n");
return GRUB_ERR_NONE;
diff --git a/grub-core/commands/efi/loadbios.c b/grub-core/commands/efi/loadbios.c
index 5c7725f8bd..574e410466 100644
--- a/grub-core/commands/efi/loadbios.c
+++ b/grub-core/commands/efi/loadbios.c
@@ -46,7 +46,7 @@ enable_rom_area (void)
grub_uint32_t *rom_ptr;
grub_pci_device_t dev = { .bus = 0, .device = 0, .function = 0};
- rom_ptr = (grub_uint32_t *) VBIOS_ADDR;
+ rom_ptr = grub_absolute_pointer (VBIOS_ADDR);
if (*rom_ptr != BLANK_MEM)
{
grub_puts_ (N_("ROM image is present."));
@@ -96,8 +96,8 @@ fake_bios_data (int use_rom)
void *acpi, *smbios;
grub_uint16_t *ebda_seg_ptr, *low_mem_ptr;
- ebda_seg_ptr = (grub_uint16_t *) EBDA_SEG_ADDR;
- low_mem_ptr = (grub_uint16_t *) LOW_MEM_ADDR;
+ ebda_seg_ptr = grub_absolute_pointer (EBDA_SEG_ADDR);
+ low_mem_ptr = grub_absolute_pointer (LOW_MEM_ADDR);
if ((*ebda_seg_ptr) || (*low_mem_ptr))
return;
@@ -132,7 +132,8 @@ fake_bios_data (int use_rom)
*ebda_seg_ptr = FAKE_EBDA_SEG;
*low_mem_ptr = (FAKE_EBDA_SEG >> 6);
- *((grub_uint16_t *) (FAKE_EBDA_SEG << 4)) = 640 - *low_mem_ptr;
+ /* *((grub_uint16_t *) (FAKE_EBDA_SEG << 4)) = 640 - *low_mem_ptr; */
+ *((grub_uint16_t *) (grub_absolute_pointer (FAKE_EBDA_SEG << 4))) = 640 - *low_mem_ptr;
if (acpi)
grub_memcpy ((char *) ((FAKE_EBDA_SEG << 4) + 16), acpi, 1024 - 16);
diff --git a/grub-core/commands/i386/pc/drivemap.c b/grub-core/commands/i386/pc/drivemap.c
index 7f7f2d41c0..6a4d923613 100644
--- a/grub-core/commands/i386/pc/drivemap.c
+++ b/grub-core/commands/i386/pc/drivemap.c
@@ -31,9 +31,6 @@
GRUB_MOD_LICENSE ("GPLv3+");
-/* Real mode IVT slot (seg:off far pointer) for interrupt 0x13. */
-static grub_uint32_t *const int13slot = (grub_uint32_t *) (4 * 0x13);
-
/* Remember to update enum opt_idxs accordingly. */
static const struct grub_arg_option options[] = {
/* TRANSLATORS: In this file "mapping" refers to a change GRUB makes so if
@@ -280,6 +277,9 @@ install_int13_handler (int noret __attribute__ ((unused)))
grub_uint8_t *handler_base = 0;
/* Address of the map within the deployed bundle. */
int13map_node_t *handler_map;
+ /* Real mode IVT slot (seg:off far pointer) for interrupt 0x13. */
+ grub_uint32_t *int13slot = (grub_uint32_t *) grub_absolute_pointer (4 * 0x13);
+
int i;
int entries = 0;
@@ -354,6 +354,9 @@ install_int13_handler (int noret __attribute__ ((unused)))
static grub_err_t
uninstall_int13_handler (void)
{
+ /* Real mode IVT slot (seg:off far pointer) for interrupt 0x13. */
+ grub_uint32_t *int13slot = (grub_uint32_t *) grub_absolute_pointer (4 * 0x13);
+
if (! grub_drivemap_oldhandler)
return GRUB_ERR_NONE;
diff --git a/grub-core/commands/i386/pc/sendkey.c b/grub-core/commands/i386/pc/sendkey.c
index 26d9acd3de..532a66497f 100644
--- a/grub-core/commands/i386/pc/sendkey.c
+++ b/grub-core/commands/i386/pc/sendkey.c
@@ -216,12 +216,12 @@ static grub_err_t
grub_sendkey_postboot (void)
{
/* For convention: pointer to flags. */
- grub_uint32_t *flags = (grub_uint32_t *) 0x417;
+ grub_uint32_t *flags = grub_absolute_pointer (0x417);
*flags = oldflags;
- *((char *) 0x41a) = 0x1e;
- *((char *) 0x41c) = 0x1e;
+ *((char *) grub_absolute_pointer (0x41a)) = 0x1e;
+ *((char *) grub_absolute_pointer (0x41c)) = 0x1e;
return GRUB_ERR_NONE;
}
@@ -231,13 +231,13 @@ static grub_err_t
grub_sendkey_preboot (int noret __attribute__ ((unused)))
{
/* For convention: pointer to flags. */
- grub_uint32_t *flags = (grub_uint32_t *) 0x417;
+ grub_uint32_t *flags = grub_absolute_pointer (0x417);
oldflags = *flags;
/* Set the sendkey. */
- *((char *) 0x41a) = 0x1e;
- *((char *) 0x41c) = keylen + 0x1e;
+ *((char *) grub_absolute_pointer (0x41a)) = 0x1e;
+ *((char *) grub_absolute_pointer (0x41c)) = keylen + 0x1e;
grub_memcpy ((char *) 0x41e, sendkey, 0x20);
/* Transform "any ctrl" to "right ctrl" flag. */
diff --git a/grub-core/disk/i386/pc/biosdisk.c b/grub-core/disk/i386/pc/biosdisk.c
index 8ca250c77b..89746ed940 100644
--- a/grub-core/disk/i386/pc/biosdisk.c
+++ b/grub-core/disk/i386/pc/biosdisk.c
@@ -367,7 +367,7 @@ grub_biosdisk_open (const char *name, grub_disk_t disk)
if (version)
{
struct grub_biosdisk_drp *drp
- = (struct grub_biosdisk_drp *) GRUB_MEMORY_MACHINE_SCRATCH_ADDR;
+ = (struct grub_biosdisk_drp *) grub_absolute_pointer (GRUB_MEMORY_MACHINE_SCRATCH_ADDR);
/* Clear out the DRP. */
grub_memset (drp, 0, sizeof (*drp));
@@ -654,7 +654,7 @@ grub_disk_biosdisk_fini (void)
GRUB_MOD_INIT(biosdisk)
{
struct grub_biosdisk_cdrp *cdrp
- = (struct grub_biosdisk_cdrp *) GRUB_MEMORY_MACHINE_SCRATCH_ADDR;
+ = (struct grub_biosdisk_cdrp *) grub_absolute_pointer (GRUB_MEMORY_MACHINE_SCRATCH_ADDR);
grub_uint8_t boot_drive;
if (grub_disk_firmware_is_tainted)
diff --git a/grub-core/fs/cbfs.c b/grub-core/fs/cbfs.c
index 581215ef18..8ab7106afb 100644
--- a/grub-core/fs/cbfs.c
+++ b/grub-core/fs/cbfs.c
@@ -342,7 +342,7 @@ init_cbfsdisk (void)
grub_uint32_t ptr;
struct cbfs_header *head;
- ptr = *(grub_uint32_t *) 0xfffffffc;
+ ptr = *((grub_uint32_t *) grub_absolute_pointer (0xfffffffc));
head = (struct cbfs_header *) (grub_addr_t) ptr;
grub_dprintf ("cbfs", "head=%p\n", head);
diff --git a/grub-core/kern/i386/pc/acpi.c b/grub-core/kern/i386/pc/acpi.c
index 297f5d05f3..0a69eba7b5 100644
--- a/grub-core/kern/i386/pc/acpi.c
+++ b/grub-core/kern/i386/pc/acpi.c
@@ -27,7 +27,7 @@ grub_machine_acpi_get_rsdpv1 (void)
grub_uint8_t *ebda, *ptr;
grub_dprintf ("acpi", "Looking for RSDP. Scanning EBDA\n");
- ebda = (grub_uint8_t *) ((* ((grub_uint16_t *) 0x40e)) << 4);
+ ebda = (grub_uint8_t *) ((* ((grub_uint16_t *) grub_absolute_pointer (0x40e))) << 4);
ebda_len = * (grub_uint16_t *) ebda;
if (! ebda_len) /* FIXME do we really need this check? */
goto scan_bios;
@@ -55,7 +55,7 @@ grub_machine_acpi_get_rsdpv2 (void)
grub_uint8_t *ebda, *ptr;
grub_dprintf ("acpi", "Looking for RSDP. Scanning EBDA\n");
- ebda = (grub_uint8_t *) ((* ((grub_uint16_t *) 0x40e)) << 4);
+ ebda = (grub_uint8_t *) ((* ((grub_uint16_t *) grub_absolute_pointer (0x40e))) << 4);
ebda_len = * (grub_uint16_t *) ebda;
if (! ebda_len) /* FIXME do we really need this check? */
goto scan_bios;
diff --git a/grub-core/kern/i386/pc/mmap.c b/grub-core/kern/i386/pc/mmap.c
index c0c3c35858..a4a1a75af4 100644
--- a/grub-core/kern/i386/pc/mmap.c
+++ b/grub-core/kern/i386/pc/mmap.c
@@ -143,7 +143,7 @@ grub_machine_mmap_iterate (grub_memory_hook_t hook, void *hook_data)
{
grub_uint32_t cont = 0;
struct grub_machine_mmap_entry *entry
- = (struct grub_machine_mmap_entry *) GRUB_MEMORY_MACHINE_SCRATCH_ADDR;
+ = (struct grub_machine_mmap_entry *) grub_absolute_pointer (GRUB_MEMORY_MACHINE_SCRATCH_ADDR);
int e820_works = 0;
while (1)
diff --git a/grub-core/loader/i386/multiboot_mbi.c b/grub-core/loader/i386/multiboot_mbi.c
index a67d9d0a80..434e694ffb 100644
--- a/grub-core/loader/i386/multiboot_mbi.c
+++ b/grub-core/loader/i386/multiboot_mbi.c
@@ -293,7 +293,7 @@ fill_vbe_info (struct multiboot_info *mbi, grub_uint8_t *ptrorig,
struct grub_vbe_mode_info_block *mode_info;
#if GRUB_MACHINE_HAS_VBE
grub_vbe_status_t status;
- void *scratch = (void *) GRUB_MEMORY_MACHINE_SCRATCH_ADDR;
+ void *scratch = grub_absolute_pointer (GRUB_MEMORY_MACHINE_SCRATCH_ADDR);
status = grub_vbe_bios_get_controller_info (scratch);
if (status != GRUB_VBE_STATUS_OK)
diff --git a/grub-core/loader/multiboot_mbi2.c b/grub-core/loader/multiboot_mbi2.c
index 9a943d7bdd..2ad210e7f9 100644
--- a/grub-core/loader/multiboot_mbi2.c
+++ b/grub-core/loader/multiboot_mbi2.c
@@ -504,7 +504,7 @@ static void
fill_vbe_tag (struct multiboot_tag_vbe *tag)
{
grub_vbe_status_t status;
- void *scratch = (void *) GRUB_MEMORY_MACHINE_SCRATCH_ADDR;
+ void *scratch = grub_absolute_pointer (GRUB_MEMORY_MACHINE_SCRATCH_ADDR);
tag->type = MULTIBOOT_TAG_TYPE_VBE;
tag->size = 0;
@@ -577,7 +577,7 @@ retrieve_video_parameters (grub_properly_aligned_t **ptrorig)
#if defined (GRUB_MACHINE_PCBIOS)
{
grub_vbe_status_t status;
- void *scratch = (void *) GRUB_MEMORY_MACHINE_SCRATCH_ADDR;
+ void *scratch = grub_absolute_pointer (GRUB_MEMORY_MACHINE_SCRATCH_ADDR);
status = grub_vbe_bios_get_mode (scratch);
vbe_mode = *(grub_uint32_t *) scratch;
if (status != GRUB_VBE_STATUS_OK)
diff --git a/grub-core/mmap/i386/pc/mmap.c b/grub-core/mmap/i386/pc/mmap.c
index 6ab4f67309..b9c5b0a002 100644
--- a/grub-core/mmap/i386/pc/mmap.c
+++ b/grub-core/mmap/i386/pc/mmap.c
@@ -80,13 +80,13 @@ preboot (int noreturn __attribute__ ((unused)))
= min (grub_mmap_get_post64 (), 0xfc000000ULL) >> 16;
/* Correct BDA. */
- *((grub_uint16_t *) 0x413) = grub_mmap_get_lower () >> 10;
+ *((grub_uint16_t *) grub_absolute_pointer (0x413)) = grub_mmap_get_lower () >> 10;
/* Save old interrupt handlers. */
- grub_machine_mmaphook_int12offset = *((grub_uint16_t *) 0x48);
- grub_machine_mmaphook_int12segment = *((grub_uint16_t *) 0x4a);
- grub_machine_mmaphook_int15offset = *((grub_uint16_t *) 0x54);
- grub_machine_mmaphook_int15segment = *((grub_uint16_t *) 0x56);
+ grub_machine_mmaphook_int12offset = *((grub_uint16_t *) grub_absolute_pointer (0x48));
+ grub_machine_mmaphook_int12segment = *((grub_uint16_t *) grub_absolute_pointer (0x4a));
+ grub_machine_mmaphook_int15offset = *((grub_uint16_t *) grub_absolute_pointer (0x54));
+ grub_machine_mmaphook_int15segment = *((grub_uint16_t *) grub_absolute_pointer (0x56));
grub_dprintf ("mmap", "hooktarget = %p\n", hooktarget);
@@ -94,11 +94,11 @@ preboot (int noreturn __attribute__ ((unused)))
grub_memcpy (hooktarget, &grub_machine_mmaphook_start,
&grub_machine_mmaphook_end - &grub_machine_mmaphook_start);
- *((grub_uint16_t *) 0x4a) = ((grub_addr_t) hooktarget) >> 4;
- *((grub_uint16_t *) 0x56) = ((grub_addr_t) hooktarget) >> 4;
- *((grub_uint16_t *) 0x48) = &grub_machine_mmaphook_int12
+ *((grub_uint16_t *) grub_absolute_pointer (0x4a)) = ((grub_addr_t) hooktarget) >> 4;
+ *((grub_uint16_t *) grub_absolute_pointer (0x56)) = ((grub_addr_t) hooktarget) >> 4;
+ *((grub_uint16_t *) grub_absolute_pointer (0x48)) = &grub_machine_mmaphook_int12
- &grub_machine_mmaphook_start;
- *((grub_uint16_t *) 0x54) = &grub_machine_mmaphook_int15
+ *((grub_uint16_t *) grub_absolute_pointer (0x54)) = &grub_machine_mmaphook_int15
- &grub_machine_mmaphook_start;
return GRUB_ERR_NONE;
@@ -108,10 +108,10 @@ static grub_err_t
preboot_rest (void)
{
/* Restore old interrupt handlers. */
- *((grub_uint16_t *) 0x48) = grub_machine_mmaphook_int12offset;
- *((grub_uint16_t *) 0x4a) = grub_machine_mmaphook_int12segment;
- *((grub_uint16_t *) 0x54) = grub_machine_mmaphook_int15offset;
- *((grub_uint16_t *) 0x56) = grub_machine_mmaphook_int15segment;
+ *((grub_uint16_t *) grub_absolute_pointer (0x48)) = grub_machine_mmaphook_int12offset;
+ *((grub_uint16_t *) grub_absolute_pointer (0x4a)) = grub_machine_mmaphook_int12segment;
+ *((grub_uint16_t *) grub_absolute_pointer (0x54)) = grub_machine_mmaphook_int15offset;
+ *((grub_uint16_t *) grub_absolute_pointer (0x56)) = grub_machine_mmaphook_int15segment;
return GRUB_ERR_NONE;
}
diff --git a/grub-core/net/drivers/i386/pc/pxe.c b/grub-core/net/drivers/i386/pc/pxe.c
index 3f4152d036..313ed250e8 100644
--- a/grub-core/net/drivers/i386/pc/pxe.c
+++ b/grub-core/net/drivers/i386/pc/pxe.c
@@ -174,7 +174,7 @@ grub_pxe_recv (struct grub_net_card *dev __attribute__ ((unused)))
grub_uint8_t *ptr, *end;
struct grub_net_buff *buf;
- isr = (void *) GRUB_MEMORY_MACHINE_SCRATCH_ADDR;
+ isr = (void *) grub_absolute_pointer (GRUB_MEMORY_MACHINE_SCRATCH_ADDR);
if (!in_progress)
{
@@ -256,11 +256,11 @@ grub_pxe_send (struct grub_net_card *dev __attribute__ ((unused)),
struct grub_pxe_undi_tbd *tbd;
char *buf;
- trans = (void *) GRUB_MEMORY_MACHINE_SCRATCH_ADDR;
+ trans = (void *) grub_absolute_pointer (GRUB_MEMORY_MACHINE_SCRATCH_ADDR);
grub_memset (trans, 0, sizeof (*trans));
- tbd = (void *) (GRUB_MEMORY_MACHINE_SCRATCH_ADDR + 128);
+ tbd = (void *) grub_absolute_pointer (GRUB_MEMORY_MACHINE_SCRATCH_ADDR + 128);
grub_memset (tbd, 0, sizeof (*tbd));
- buf = (void *) (GRUB_MEMORY_MACHINE_SCRATCH_ADDR + 256);
+ buf = (void *) grub_absolute_pointer (GRUB_MEMORY_MACHINE_SCRATCH_ADDR + 256);
grub_memcpy (buf, pack->data, pack->tail - pack->data);
trans->tbd = SEGOFS ((grub_addr_t) tbd);
@@ -287,7 +287,7 @@ static grub_err_t
grub_pxe_open (struct grub_net_card *dev __attribute__ ((unused)))
{
struct grub_pxe_undi_open *ou;
- ou = (void *) GRUB_MEMORY_MACHINE_SCRATCH_ADDR;
+ ou = (void *) grub_absolute_pointer (GRUB_MEMORY_MACHINE_SCRATCH_ADDR);
grub_memset (ou, 0, sizeof (*ou));
ou->pkt_filter = 4;
grub_pxe_call (GRUB_PXENV_UNDI_OPEN, ou, pxe_rm_entry);
@@ -382,7 +382,7 @@ GRUB_MOD_INIT(pxe)
if (! pxenv)
return;
- ui = (void *) GRUB_MEMORY_MACHINE_SCRATCH_ADDR;
+ ui = (void *) grub_absolute_pointer (GRUB_MEMORY_MACHINE_SCRATCH_ADDR);
grub_memset (ui, 0, sizeof (*ui));
grub_pxe_call (GRUB_PXENV_UNDI_GET_INFORMATION, ui, pxe_rm_entry);
diff --git a/grub-core/term/i386/pc/console.c b/grub-core/term/i386/pc/console.c
index f6142a2dea..d70ee4af05 100644
--- a/grub-core/term/i386/pc/console.c
+++ b/grub-core/term/i386/pc/console.c
@@ -238,12 +238,11 @@ grub_console_getkey (struct grub_term_input *term __attribute__ ((unused)))
return (regs.eax & 0xff) + (('a' - 1) | GRUB_TERM_CTRL);
}
-static const struct grub_machine_bios_data_area *bios_data_area =
- (struct grub_machine_bios_data_area *) GRUB_MEMORY_MACHINE_BIOS_DATA_AREA_ADDR;
-
static int
grub_console_getkeystatus (struct grub_term_input *term __attribute__ ((unused)))
{
+ const struct grub_machine_bios_data_area *bios_data_area =
+ (struct grub_machine_bios_data_area *) grub_absolute_pointer (GRUB_MEMORY_MACHINE_BIOS_DATA_AREA_ADDR);
/* conveniently GRUB keystatus is modelled after BIOS one. */
return bios_data_area->keyboard_flag_lower & ~0x80;
}
diff --git a/grub-core/term/i386/pc/vga_text.c b/grub-core/term/i386/pc/vga_text.c
index 88fecc5ea5..669d06fad7 100644
--- a/grub-core/term/i386/pc/vga_text.c
+++ b/grub-core/term/i386/pc/vga_text.c
@@ -45,15 +45,15 @@ GRUB_MOD_LICENSE ("GPLv3+");
static struct grub_term_coordinate grub_curr_pos;
#ifdef __mips__
-#define VGA_TEXT_SCREEN ((grub_uint16_t *) 0xb00b8000)
+#define VGA_TEXT_SCREEN ((grub_uint16_t *) grub_absolute_pointer (0xb00b8000))
#define cr_read grub_vga_cr_read
#define cr_write grub_vga_cr_write
#elif defined (MODE_MDA)
-#define VGA_TEXT_SCREEN ((grub_uint16_t *) 0xb0000)
+#define VGA_TEXT_SCREEN ((grub_uint16_t *) grub_absolute_pointer (0xb0000))
#define cr_read grub_vga_cr_bw_read
#define cr_write grub_vga_cr_bw_write
#else
-#define VGA_TEXT_SCREEN ((grub_uint16_t *) 0xb8000)
+#define VGA_TEXT_SCREEN ((grub_uint16_t *) grub_absolute_pointer (0xb8000))
#define cr_read grub_vga_cr_read
#define cr_write grub_vga_cr_write
#endif
diff --git a/grub-core/term/ns8250.c b/grub-core/term/ns8250.c
index 39809d0423..622670d179 100644
--- a/grub-core/term/ns8250.c
+++ b/grub-core/term/ns8250.c
@@ -28,7 +28,6 @@
#ifdef GRUB_MACHINE_PCBIOS
#include <grub/machine/memory.h>
-static const unsigned short *serial_hw_io_addr = (const unsigned short *) GRUB_MEMORY_MACHINE_BIOS_DATA_AREA_ADDR;
#define GRUB_SERIAL_PORT_NUM 4
#else
#include <grub/machine/serial.h>
@@ -237,6 +236,9 @@ static struct grub_serial_port com_ports[GRUB_SERIAL_PORT_NUM];
void
grub_ns8250_init (void)
{
+#ifdef GRUB_MACHINE_PCBIOS
+ const unsigned short *serial_hw_io_addr = (const unsigned short *) grub_absolute_pointer (GRUB_MEMORY_MACHINE_BIOS_DATA_AREA_ADDR);
+#endif
unsigned i;
for (i = 0; i < GRUB_SERIAL_PORT_NUM; i++)
if (serial_hw_io_addr[i])
@@ -272,6 +274,9 @@ grub_ns8250_init (void)
grub_port_t
grub_ns8250_hw_get_port (const unsigned int unit)
{
+#ifdef GRUB_MACHINE_PCBIOS
+ const unsigned short *serial_hw_io_addr = (const unsigned short *) grub_absolute_pointer (GRUB_MEMORY_MACHINE_BIOS_DATA_AREA_ADDR);
+#endif
if (unit < GRUB_SERIAL_PORT_NUM
&& !(dead_ports & (1 << unit)))
return serial_hw_io_addr[unit];
diff --git a/grub-core/video/i386/pc/vbe.c b/grub-core/video/i386/pc/vbe.c
index 68700ecda1..8c8cbf07eb 100644
--- a/grub-core/video/i386/pc/vbe.c
+++ b/grub-core/video/i386/pc/vbe.c
@@ -514,7 +514,7 @@ grub_vbe_probe (struct grub_vbe_info_block *info_block)
/* Use low memory scratch area as temporary storage
for VESA BIOS call. */
- vbe_ib = (struct grub_vbe_info_block *) GRUB_MEMORY_MACHINE_SCRATCH_ADDR;
+ vbe_ib = (struct grub_vbe_info_block *) grub_absolute_pointer (GRUB_MEMORY_MACHINE_SCRATCH_ADDR);
/* Prepare info block. */
grub_memset (vbe_ib, 0, sizeof (*vbe_ib));
@@ -574,7 +574,7 @@ grub_vbe_get_preferred_mode (unsigned int *width, unsigned int *height)
/* Use low memory scratch area as temporary storage for VESA BIOS calls. */
flat_panel_info = (struct grub_vbe_flat_panel_info *)
- (GRUB_MEMORY_MACHINE_SCRATCH_ADDR + sizeof (struct grub_video_edid_info));
+ grub_absolute_pointer (GRUB_MEMORY_MACHINE_SCRATCH_ADDR + sizeof (struct grub_video_edid_info));
if (controller_info.version >= 0x200
&& (grub_vbe_bios_get_ddc_capabilities (&ddc_level) & 0xff)
@@ -676,7 +676,7 @@ grub_vbe_set_video_mode (grub_uint32_t vbe_mode,
== GRUB_VBE_MEMORY_MODEL_PACKED_PIXEL)
{
struct grub_vbe_palette_data *palette
- = (struct grub_vbe_palette_data *) GRUB_MEMORY_MACHINE_SCRATCH_ADDR;
+ = (struct grub_vbe_palette_data *) grub_absolute_pointer (GRUB_MEMORY_MACHINE_SCRATCH_ADDR);
unsigned i;
/* Make sure that the BIOS can reach the palette. */
diff --git a/include/grub/compiler.h b/include/grub/compiler.h
index 8f3be3ae70..e159f0e292 100644
--- a/include/grub/compiler.h
+++ b/include/grub/compiler.h
@@ -56,4 +56,15 @@
# define CLANG_PREREQ(maj,min) 0
#endif
+#if defined(__GNUC__)
+# define grub_absolute_pointer(val) \
+({ \
+ unsigned long __ptr; \
+ __asm__ ("" : "=r"(__ptr) : "0"((void *)(val))); \
+ (void *) (__ptr); \
+})
+#else
+# define grub_absolute_pointer(val) ((void *)(val))
+#endif
+
#endif /* ! GRUB_COMPILER_HEADER */
--
2.34.1

16
0002-ieee1275-powerpc-enables-device-mapper-discovery.patch
View File

@ -10,12 +10,15 @@ since there is no function implemented to handle this case.
This patch implements a function that will look into /sys/block/dm-*
devices and search recursively inside slaves directory to find the root
disk.
v2:
Fix gcc-12 error: pointer 'device_path' may be used after 'free'
[-Werror=use-after-free]
---
grub-core/osdep/linux/ofpath.c | 64 +++++++++++++++++++++++++++++++++-
grub-core/osdep/linux/ofpath.c | 64 ++++++++++++++++++++++++++++++++++++++++-
1 file changed, 63 insertions(+), 1 deletion(-)
diff --git a/grub-core/osdep/linux/ofpath.c b/grub-core/osdep/linux/ofpath.c
index f2bc9fc5c..d1040c4e6 100644
--- a/grub-core/osdep/linux/ofpath.c
+++ b/grub-core/osdep/linux/ofpath.c
@@ -37,6 +37,7 @@
@ -26,7 +29,7 @@ index f2bc9fc5c..d1040c4e6 100644
#ifdef __sparc__
typedef enum
@@ -754,13 +755,74 @@ strip_trailing_digits (const char *p)
@@ -754,13 +755,74 @@
return new;
}
@ -75,7 +78,7 @@ index f2bc9fc5c..d1040c4e6 100644
+ closedir (dp);
+ }
+ else
+ grub_util_warn (_("cannot open directory `%s'"), device_path);
+ grub_util_warn (_("cannot open directory `/sys/block/%s/slaves'"), curr_device);
+ }
+
+ free (directory);
@ -102,6 +105,3 @@ index f2bc9fc5c..d1040c4e6 100644
device = get_basename (name_buf);
devnode = strip_trailing_digits (name_buf);
devicenode = strip_trailing_digits (device);
--
2.26.2

51
0003-reed_solomon-Fix-array-subscript-0-is-outside-array-.patch Normal file
View File

@ -0,0 +1,51 @@
From 0b1b1666ecd98d577cb72b3f4acdbe3af2e86a84 Mon Sep 17 00:00:00 2001
From: Michael Chang <mchang@suse.com>
Date: Wed, 16 Mar 2022 17:59:30 +0800
Subject: [PATCH 3/3] reed_solomon: Fix array subscript 0 is outside array
bounds
The grub_absolute_pointer() is a compound expression that can only work
within a function. We are out of luck here when the pointer variables
require global definition due to ATTRIBUTE_TEXT that have to use fully
initialized global definition because of the way linkers work.
static gf_single_t * const gf_powx ATTRIBUTE_TEXT = (void *) 0x100000;
For the reason given above, use gcc diagnostic pragmas to suppress the
array-bounds warning.
Signed-off-by: Michael Chang <mchang@suse.com>
---
grub-core/lib/reed_solomon.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/grub-core/lib/reed_solomon.c b/grub-core/lib/reed_solomon.c
index 467305b46a..817db6a234 100644
--- a/grub-core/lib/reed_solomon.c
+++ b/grub-core/lib/reed_solomon.c
@@ -102,6 +102,11 @@ static gf_single_t errvals[256];
static gf_single_t eqstat[65536 + 256];
#endif
+#if __GNUC__ == 12
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Warray-bounds"
+#endif
+
static gf_single_t
gf_mul (gf_single_t a, gf_single_t b)
{
@@ -319,6 +324,10 @@ decode_block (gf_single_t *ptr, grub_size_t s,
}
}
+#if __GNUC__ == 12
+#pragma GCC diagnostic pop
+#endif
+
#if !defined (STANDALONE)
static void
encode_block (gf_single_t *ptr, grub_size_t s,
--
2.34.1

51
grub2-btrfs-01-add-ability-to-boot-from-subvolumes.patch
View File

@ -21,15 +21,18 @@ V1:
* Use overflow checking primitives where the arithmetic expression for
buffer allocations may include unvalidated data
V2:
* Fix gcc-12 error: the comparison will always evaluate as 'true' for the
address of 'label' will never be NULL [-Werror=address]
---
grub-core/fs/btrfs.c | 529 +++++++++++++++++++++++++++++++++++++++++++++++++--
1 file changed, 518 insertions(+), 11 deletions(-)
grub-core/fs/btrfs.c | 561 +++++++++++++++++++++++++++++++++++++++++++++++++--
include/grub/btrfs.h | 1
2 files changed, 544 insertions(+), 18 deletions(-)
Index: grub-2.06~rc1/grub-core/fs/btrfs.c
===================================================================
--- grub-2.06~rc1.orig/grub-core/fs/btrfs.c
+++ grub-2.06~rc1/grub-core/fs/btrfs.c
--- a/grub-core/fs/btrfs.c
+++ b/grub-core/fs/btrfs.c
@@ -41,6 +41,9 @@
#include <grub/crypto.h>
#include <grub/diskfilter.h>
@ -40,7 +43,7 @@ Index: grub-2.06~rc1/grub-core/fs/btrfs.c
GRUB_MOD_LICENSE ("GPLv3+");
@@ -79,9 +82,11 @@ struct grub_btrfs_superblock
@@ -79,9 +82,11 @@
grub_uint64_t generation;
grub_uint64_t root_tree;
grub_uint64_t chunk_tree;
@ -54,7 +57,7 @@ Index: grub-2.06~rc1/grub-core/fs/btrfs.c
struct grub_btrfs_device this_device;
char label[0x100];
grub_uint8_t dummy4[0x100];
@@ -121,6 +126,7 @@ struct grub_btrfs_data
@@ -121,6 +126,7 @@
grub_uint64_t exttree;
grub_size_t extsize;
struct grub_btrfs_extent_data *extent;
@ -62,7 +65,7 @@ Index: grub-2.06~rc1/grub-core/fs/btrfs.c
};
struct grub_btrfs_chunk_item
@@ -191,6 +197,14 @@ struct grub_btrfs_leaf_descriptor
@@ -191,6 +197,14 @@
} *data;
};
@ -77,7 +80,7 @@ Index: grub-2.06~rc1/grub-core/fs/btrfs.c
struct grub_btrfs_time
{
grub_int64_t sec;
@@ -236,6 +250,14 @@ struct grub_btrfs_extent_data
@@ -236,6 +250,14 @@
#define GRUB_BTRFS_OBJECT_ID_CHUNK 0x100
@ -92,7 +95,7 @@ Index: grub-2.06~rc1/grub-core/fs/btrfs.c
static grub_disk_addr_t superblock_sectors[] = { 64 * 2, 64 * 1024 * 2,
256 * 1048576 * 2, 1048576ULL * 1048576ULL * 2
};
@@ -1173,6 +1195,62 @@ grub_btrfs_read_logical (struct grub_btr
@@ -1173,6 +1195,62 @@
return GRUB_ERR_NONE;
}
@ -155,7 +158,7 @@ Index: grub-2.06~rc1/grub-core/fs/btrfs.c
static struct grub_btrfs_data *
grub_btrfs_mount (grub_device_t dev)
{
@@ -1208,6 +1286,13 @@ grub_btrfs_mount (grub_device_t dev)
@@ -1208,6 +1286,13 @@
data->devices_attached[0].dev = dev;
data->devices_attached[0].id = data->sblock.this_device.device_id;
@ -169,7 +172,7 @@ Index: grub-2.06~rc1/grub-core/fs/btrfs.c
return data;
}
@@ -1674,6 +1759,98 @@ get_root (struct grub_btrfs_data *data,
@@ -1674,6 +1759,98 @@
}
static grub_err_t
@ -268,7 +271,7 @@ Index: grub-2.06~rc1/grub-core/fs/btrfs.c
find_path (struct grub_btrfs_data *data,
const char *path, struct grub_btrfs_key *key,
grub_uint64_t *tree, grub_uint8_t *type)
@@ -1691,14 +1868,26 @@ find_path (struct grub_btrfs_data *data,
@@ -1691,14 +1868,26 @@
char *origpath = NULL;
unsigned symlinks_max = 32;
@ -299,7 +302,7 @@ Index: grub-2.06~rc1/grub-core/fs/btrfs.c
while (1)
{
while (path[0] == '/')
@@ -1871,9 +2060,21 @@ find_path (struct grub_btrfs_data *data,
@@ -1871,9 +2060,21 @@
path = path_alloc = tmp;
if (path[0] == '/')
{
@ -324,7 +327,7 @@ Index: grub-2.06~rc1/grub-core/fs/btrfs.c
}
continue;
}
@@ -2114,6 +2315,20 @@ grub_btrfs_read (grub_file_t file, char
@@ -2114,6 +2315,20 @@
data->tree, file->offset, buf, len);
}
@ -345,7 +348,7 @@ Index: grub-2.06~rc1/grub-core/fs/btrfs.c
static grub_err_t
grub_btrfs_uuid (grub_device_t device, char **uuid)
{
@@ -2125,15 +2340,7 @@ grub_btrfs_uuid (grub_device_t device, c
@@ -2125,15 +2340,7 @@
if (!data)
return grub_errno;
@ -362,7 +365,7 @@ Index: grub-2.06~rc1/grub-core/fs/btrfs.c
grub_btrfs_unmount (data);
@@ -2190,6 +2397,248 @@ grub_btrfs_embed (grub_device_t device _
@@ -2190,6 +2397,248 @@
}
#endif
@ -395,7 +398,7 @@ Index: grub-2.06~rc1/grub-core/fs/btrfs.c
+ return grub_error (GRUB_ERR_BAD_ARGUMENT, "failed to open fs");
+ }
+
+ if (data->sblock.label)
+ if (*data->sblock.label != '\0')
+ grub_printf("Label: '%s' ", data->sblock.label);
+ else
+ grub_printf("Label: none ");
@ -611,7 +614,7 @@ Index: grub-2.06~rc1/grub-core/fs/btrfs.c
static struct grub_fs grub_btrfs_fs = {
.name = "btrfs",
.fs_dir = grub_btrfs_dir,
@@ -2205,12 +2654,88 @@ static struct grub_fs grub_btrfs_fs = {
@@ -2205,12 +2654,88 @@
#endif
};
@ -700,11 +703,9 @@ Index: grub-2.06~rc1/grub-core/fs/btrfs.c
}
+
+// vim: si et sw=2:
Index: grub-2.06~rc1/include/grub/btrfs.h
===================================================================
--- grub-2.06~rc1.orig/include/grub/btrfs.h
+++ grub-2.06~rc1/include/grub/btrfs.h
@@ -29,6 +29,7 @@ enum
--- a/include/grub/btrfs.h
+++ b/include/grub/btrfs.h
@@ -29,6 +29,7 @@
GRUB_BTRFS_ITEM_TYPE_ROOT_ITEM = 0x84,
GRUB_BTRFS_ITEM_TYPE_ROOT_BACKREF = 0x90,
GRUB_BTRFS_ITEM_TYPE_DEVICE = 0xd8,

11
grub2.changes
View File

@ -1,3 +1,14 @@
-------------------------------------------------------------------
Wed Mar 16 14:57:02 UTC 2022 - Michael Chang <mchang@suse.com>
- Fix GCC 12 build failure (bsc#1196546)
* 0001-mkimage-Fix-dangling-pointer-may-be-used-error.patch
* 0002-Fix-Werror-array-bounds-array-subscript-0-is-outside.patch
* 0003-reed_solomon-Fix-array-subscript-0-is-outside-array-.patch
- Revised
* grub2-btrfs-01-add-ability-to-boot-from-subvolumes.patch
* 0002-ieee1275-powerpc-enables-device-mapper-discovery.patch
-------------------------------------------------------------------
Fri Mar 11 09:30:05 UTC 2022 - Michael Chang <mchang@suse.com>

3
grub2.spec
View File

@ -359,6 +359,9 @@ Patch841: 0005-export-environment-at-start-up.patch
Patch842: 0001-grub-install-bailout-root-device-probing.patch
Patch843: 0001-RISC-V-Adjust-march-flags-for-binutils-2.38.patch
Patch844: 0001-install-fix-software-raid1-on-esp.patch
Patch845: 0001-mkimage-Fix-dangling-pointer-may-be-used-error.patch
Patch846: 0002-Fix-Werror-array-bounds-array-subscript-0-is-outside.patch
Patch847: 0003-reed_solomon-Fix-array-subscript-0-is-outside-array-.patch
Requires: gettext-runtime
%if 0%{?suse_version} >= 1140