Fix a couple of issues with kmemleak that lead to missed (not reported) leaks. Parts of the kernel keep references to allocated objects which are not properly communicated to kmemleak. This causes kmemleak to fail to report some memory leaks. I have also written a kmemleak test. It is a userspace Python script and a device driver that communicate over ioctl, allocate and free memory and verify that memory leaks are reported correctly. You can find it here: https://gist.github.com/george-enf/2d7cc288202b94defbe253f4ca26357b George Prekas (9): mm: kmemleak: properly disable task stack scanning Revert "mm/kmemleak: make create_object return void" mm: kmemleak: propagate NO_SCAN flag in delete_object_part mm: kmemleak: add kmemleak_noscan_phys function mm: kmemleak: do not scan sparsemap_buf mm: kmemleak: do not scan cpu_cache of struct kmem_cache mm: kmemleak: erase page->s_mem in slab_destroy mm: kmemleak: erase page->freelist in slab_destroy mm: kmemleak: fix undetected leaks for page aligned objects include/linux/kmemleak.h | 5 ++ kernel/fork.c | 3 ++ mm/kmemleak.c | 98 ++++++++++++++++++++++++++-------------- mm/slab.c | 20 +++----- mm/slab.h | 7 ++- mm/sparse.c | 3 ++ 6 files changed, 88 insertions(+), 48 deletions(-) -- 2.37.1
