50 lines
1.5 KiB
Diff
50 lines
1.5 KiB
Diff
From 0397c8a6d1c65c7e7216324f0c63e386e9b6c5ed Mon Sep 17 00:00:00 2001
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From: Vladimir 'phcoder' Serbinenko <phcoder@gmail.com>
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Date: Sat, 20 Apr 2013 17:39:49 +0200
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Subject: [PATCH 332/482] * grub-core/kern/mm.c (grub_mm_init_region):
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Fix condition for detecting too small regions.
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---
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ChangeLog | 5 +++++
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grub-core/kern/mm.c | 5 +++--
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2 files changed, 8 insertions(+), 2 deletions(-)
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diff --git a/ChangeLog b/ChangeLog
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index b2e3ccc..2a4264c 100644
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--- a/ChangeLog
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+++ b/ChangeLog
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@@ -1,5 +1,10 @@
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2013-04-20 Vladimir Serbinenko <phcoder@gmail.com>
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+ * grub-core/kern/mm.c (grub_mm_init_region): Fix condition for
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+ detecting too small regions.
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+
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+2013-04-20 Vladimir Serbinenko <phcoder@gmail.com>
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+
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* grub-core/Makefile.core.def (legacycfg): Enable on EFI.
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2013-04-20 Vladimir Serbinenko <phcoder@gmail.com>
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diff --git a/grub-core/kern/mm.c b/grub-core/kern/mm.c
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index d869091..959c3ba 100644
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--- a/grub-core/kern/mm.c
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+++ b/grub-core/kern/mm.c
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@@ -140,12 +140,13 @@ grub_mm_init_region (void *addr, grub_size_t size)
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/* Allocate a region from the head. */
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r = (grub_mm_region_t) ALIGN_UP ((grub_addr_t) addr, GRUB_MM_ALIGN);
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- size -= (char *) r - (char *) addr + sizeof (*r);
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/* If this region is too small, ignore it. */
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- if (size < GRUB_MM_ALIGN)
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+ if (size < GRUB_MM_ALIGN + (char *) r - (char *) addr + sizeof (*r))
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return;
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+ size -= (char *) r - (char *) addr + sizeof (*r);
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+
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h = (grub_mm_header_t) (r + 1);
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h->next = h;
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h->magic = GRUB_MM_FREE_MAGIC;
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--
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1.8.2.1
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