mirrors
/
linux-stable
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
1
0
Fork 0
Code Issues Releases Wiki Activity

[PATCH] fix remap_pte_range BUG 

Out-of-tree user of remap_pfn_range hit kernel BUG at mm/memory.c:1112!
It passes an unrounded size to remap_pfn_range, which was okay before
2.6.12, but misses remap_pte_range's new end condition.  An audit of
all the other ptwalks confirms that this is the only one so exposed.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Chris Wright <chrisw@osdl.org>
This commit is contained in:
Hugh Dickins 2005-06-22 14:02:41 +01:00 committed by Chris Wright
parent 906aa4d200
commit 986bd43014
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
mm/memory.c
View File

@ -1164,7 +1164,7 @@ int remap_pfn_range(struct vm_area_struct *vma, unsigned long addr,
{
pgd_t *pgd;
unsigned long next;
unsigned long end = addr + size;
unsigned long end = addr + PAGE_ALIGN(size);
struct mm_struct *mm = vma->vm_mm;
int err;