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| author | Catalin Marinas <catalin.marinas@arm.com> | 2013-11-13 00:07:45 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-11-13 04:09:07 +0100 |
| commit | 7f88f88f83ed609650a01b18572e605ea50cd163 (patch) | |
| tree | 7a515679de2418dbf006bdc40c23b8c6f6b73fce /mm/page_alloc.c | |
| parent | mm/sparsemem: fix a bug in free_map_bootmem when CONFIG_SPARSEMEM_VMEMMAP (diff) | |
| download | linux-7f88f88f83ed609650a01b18572e605ea50cd163.tar.xz linux-7f88f88f83ed609650a01b18572e605ea50cd163.zip | |
mm: kmemleak: avoid false negatives on vmalloc'ed objects
Commit 248ac0e1943a ("mm/vmalloc: remove guard page from between vmap
blocks") had the side effect of making vmap_area.va_end member point to
the next vmap_area.va_start. This was creating an artificial reference
to vmalloc'ed objects and kmemleak was rarely reporting vmalloc() leaks.
This patch marks the vmap_area containing pointers explicitly and
reduces the min ref_count to 2 as vm_struct still contains a reference
to the vmalloc'ed object. The kmemleak add_scan_area() function has
been improved to allow a SIZE_MAX argument covering the rest of the
object (for simpler calling sites).
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/page_alloc.c')
0 files changed, 0 insertions, 0 deletions