korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-15 08:14:15 +08:00
Code Issues Packages Projects Releases Wiki Activity

x86/kaslr: Fix off-by-one error in process_gb_huge_pages()

Browse Source 
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
This commit is contained in:
Arvind Sankar 2020-07-28 18:57:11 -04:00 committed by Ingo Molnar
parent bf457be154
commit 79c2fd2afe
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/x86/boot/compressed/kaslr.c
View File

@ -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++;