49 lines
1.4 KiB
Diff
49 lines
1.4 KiB
Diff
From cb5decaaf3d53218031770c9a25a359630784fb6 Mon Sep 17 00:00:00 2001
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From: Peter Jones <pjones@redhat.com>
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Date: Mon, 1 May 2017 11:19:40 -0400
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Subject: [PATCH 113/225] efi: Better grub_dprintf() in our module loader.
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This adds a "sections" dprintf type that shows details of
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grub_efi_module_addr()'s parsing of sections, whether they're valid or
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not, and what their load addresses are.
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Signed-off-by: Peter Jones <pjones@redhat.com>
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---
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grub-core/kern/efi/efi.c | 16 +++++++++++++---
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1 file changed, 13 insertions(+), 3 deletions(-)
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diff --git a/grub-core/kern/efi/efi.c b/grub-core/kern/efi/efi.c
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index f3fb6e654..caa9d9979 100644
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--- a/grub-core/kern/efi/efi.c
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+++ b/grub-core/kern/efi/efi.c
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@@ -313,13 +313,23 @@ grub_efi_modules_addr (void)
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}
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if (i == coff_header->num_sections)
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- return 0;
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+ {
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+ grub_dprintf("sections", "section %d is last section; invalid.\n", i);
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+ return 0;
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+ }
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info = (struct grub_module_info *) ((char *) image->image_base
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+ section->virtual_address);
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- if (info->magic != GRUB_MODULE_MAGIC)
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- return 0;
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+ if (section->name[0] != '.' && info->magic != GRUB_MODULE_MAGIC)
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+ {
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+ grub_dprintf("sections",
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+ "section %d has bad magic %08lx, should be %08lx\n",
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+ i, info->magic, GRUB_MODULE_MAGIC);
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+ return 0;
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+ }
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+ grub_dprintf("sections", "returning section info for section %d: \"%s\"\n",
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+ i, section->name);
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return (grub_addr_t) info;
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}
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--
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2.14.3
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