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0.6137
2014 Feb 13
5
[PATCH] Potential bug in emalloc
From: Sylvain Gault <sylvain.gault at gmail.com>
I found something suspicious while hunting another bug a while ago. The
conditions for that bug to occur seems quite hard to meet, but it's still code
quality improvement. See the commit message for details.
Sylvain Gault (1):
efi: Suspicious size reduction in emalloc
efi/main.c | 4 +---
1 file changed, 1 insertion(+), 3
2014 Feb 13
0
[PATCH] efi: Suspicious size reduction in emalloc
...d
could be less than required. On 64 bits, allocate_pages may be called
more times than needed.
This closes bug #39.
Signed-off-by: Sylvain Gault <sylvain.gault at gmail.com>
---
efi/main.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/efi/main.c b/efi/main.c
index 0e6b137..94878f9 100644
--- a/efi/main.c
+++ b/efi/main.c
@@ -691,10 +691,8 @@ EFI_STATUS emalloc(UINTN size, UINTN align, EFI_PHYSICAL_ADDRESS *addr)
/* Low-memory is super-precious! */
if (end <= 1 << 20)
continue;
- if (start < 1 << 20) {
- size -= (1 << 20) - start;...