Messages in this thread Patch in this message | | | Date | Thu, 06 Aug 2020 23:38:57 -0000 | From | "tip-bot2 for Arvind Sankar" <> | Subject | [tip: x86/kaslr] x86/kaslr: Fix off-by-one error in process_gb_huge_pages() |
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The following commit has been merged into the x86/kaslr branch of tip:
Commit-ID: 79c2fd2afe55944098047721c33e06fd48654e57 Gitweb: https://git.kernel.org/tip/79c2fd2afe55944098047721c33e06fd48654e57 Author: Arvind Sankar <nivedita@alum.mit.edu> AuthorDate: Tue, 28 Jul 2020 18:57:11 -04:00 Committer: Ingo Molnar <mingo@kernel.org> CommitterDate: Fri, 31 Jul 2020 11:08:17 +02:00
x86/kaslr: Fix off-by-one error in process_gb_huge_pages()
If the remaining size of the region is exactly 1Gb, there is still one hugepage that can be reserved.
Signed-off-by: Arvind Sankar <nivedita@alum.mit.edu> Signed-off-by: Ingo Molnar <mingo@kernel.org> Link: https://lore.kernel.org/r/20200728225722.67457-11-nivedita@alum.mit.edu --- arch/x86/boot/compressed/kaslr.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/boot/compressed/kaslr.c b/arch/x86/boot/compressed/kaslr.c index d074986..0df513e 100644 --- a/arch/x86/boot/compressed/kaslr.c +++ b/arch/x86/boot/compressed/kaslr.c @@ -562,7 +562,7 @@ process_gb_huge_pages(struct mem_vector *region, unsigned long image_size) size = region->size - (addr - region->start); /* Check how many 1GB huge pages can be filtered out: */ - while (size > PUD_SIZE && max_gb_huge_pages) { + while (size >= PUD_SIZE && max_gb_huge_pages) { size -= PUD_SIZE; max_gb_huge_pages--; i++;
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