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https://src.fedoraproject.org/rpms/grub2.git
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e1531466e1
This change updates grub to the 2.04 release. The new release changed how grub is built, so the bootstrap and bootstrap.conf files have to be added to the dist-git. Also, the gitignore file changed so it has to be updated. Since the patches have been forward ported to 2.04, there's no need for a logic to maintain a patch with the delta between the release and the grub master branch. So the release-to-master.patch is dropped and no longer is updated by the do-rebase script. Also since gnulib isn't part of the grub repository anymore and cloned by the boostrap tool, a gnulib tarball is included as other source file and copied before calling the bootstrap tool. That way grub can be built even in builders that only have access to the sources lookaside cache. Resolves: rhbz#1727279 Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
105 lines
3.1 KiB
Diff
105 lines
3.1 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Andrei Borzenkov <arvidjaar@gmail.com>
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Date: Wed, 16 May 2018 13:06:04 -0400
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Subject: [PATCH] efi/uga: use 64 bit for fb_base
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We get 64 bit from PCI BAR but then truncate by assigning to 32 bit.
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Make sure to check that pointer does not overflow on 32 bit platform.
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Closes: 50931
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---
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grub-core/video/efi_uga.c | 31 ++++++++++++++++---------------
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1 file changed, 16 insertions(+), 15 deletions(-)
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diff --git a/grub-core/video/efi_uga.c b/grub-core/video/efi_uga.c
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index 044af1d20d3..97a607c01a5 100644
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--- a/grub-core/video/efi_uga.c
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+++ b/grub-core/video/efi_uga.c
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@@ -34,7 +34,7 @@ GRUB_MOD_LICENSE ("GPLv3+");
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static grub_efi_guid_t uga_draw_guid = GRUB_EFI_UGA_DRAW_GUID;
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static struct grub_efi_uga_draw_protocol *uga;
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-static grub_uint32_t uga_fb;
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+static grub_uint64_t uga_fb;
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static grub_uint32_t uga_pitch;
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static struct
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@@ -52,7 +52,7 @@ static struct
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#define FBTEST_COUNT 8
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static int
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-find_line_len (grub_uint32_t *fb_base, grub_uint32_t *line_len)
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+find_line_len (grub_uint64_t *fb_base, grub_uint32_t *line_len)
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{
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grub_uint32_t *base = (grub_uint32_t *) (grub_addr_t) *fb_base;
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int i;
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@@ -67,7 +67,7 @@ find_line_len (grub_uint32_t *fb_base, grub_uint32_t *line_len)
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{
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if ((base[j] & RGB_MASK) == RGB_MAGIC)
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{
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- *fb_base = (grub_uint32_t) (grub_addr_t) base;
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+ *fb_base = (grub_uint64_t) (grub_addr_t) base;
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*line_len = j << 2;
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return 1;
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@@ -84,7 +84,7 @@ find_line_len (grub_uint32_t *fb_base, grub_uint32_t *line_len)
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/* Context for find_framebuf. */
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struct find_framebuf_ctx
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{
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- grub_uint32_t *fb_base;
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+ grub_uint64_t *fb_base;
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grub_uint32_t *line_len;
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int found;
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};
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@@ -129,7 +129,9 @@ find_card (grub_pci_device_t dev, grub_pci_id_t pciid, void *data)
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if (i == 5)
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break;
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- old_bar2 = grub_pci_read (addr + 4);
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+ i++;
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+ addr += 4;
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+ old_bar2 = grub_pci_read (addr);
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}
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else
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old_bar2 = 0;
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@@ -138,10 +140,15 @@ find_card (grub_pci_device_t dev, grub_pci_id_t pciid, void *data)
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base64 <<= 32;
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base64 |= (old_bar1 & GRUB_PCI_ADDR_MEM_MASK);
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- grub_dprintf ("fb", "%s(%d): 0x%llx\n",
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+ grub_dprintf ("fb", "%s(%d): 0x%" PRIxGRUB_UINT64_T "\n",
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((old_bar1 & GRUB_PCI_ADDR_MEM_PREFETCH) ?
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- "VMEM" : "MMIO"), i,
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- (unsigned long long) base64);
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+ "VMEM" : "MMIO"), type == GRUB_PCI_ADDR_MEM_TYPE_64 ? i - 1 : i,
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+ base64);
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+
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+#if GRUB_CPU_SIZEOF_VOID_P == 4
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+ if (old_bar2)
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+ continue;
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+#endif
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if ((old_bar1 & GRUB_PCI_ADDR_MEM_PREFETCH) && (! ctx->found))
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{
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@@ -149,12 +156,6 @@ find_card (grub_pci_device_t dev, grub_pci_id_t pciid, void *data)
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if (find_line_len (ctx->fb_base, ctx->line_len))
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ctx->found++;
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}
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-
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- if (type == GRUB_PCI_ADDR_MEM_TYPE_64)
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- {
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- i++;
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- addr += 4;
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- }
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}
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}
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@@ -162,7 +163,7 @@ find_card (grub_pci_device_t dev, grub_pci_id_t pciid, void *data)
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}
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static int
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-find_framebuf (grub_uint32_t *fb_base, grub_uint32_t *line_len)
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+find_framebuf (grub_uint64_t *fb_base, grub_uint32_t *line_len)
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{
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struct find_framebuf_ctx ctx = {
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.fb_base = fb_base,
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