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    Subject[PATCH] kmemleak: Add support for NO_BOOTMEM configurations
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    With commits 08677214 and 59be5a8e, alloc_bootmem()/free_bootmem() and
    friends use the early_res functions for memory management when
    NO_BOOTMEM is enabled. This patch adds the kmemleak calls in the
    corresponding code paths for bootmem allocations.

    Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
    Cc: Pekka Enberg <penberg@cs.helsinki.fi>
    Cc: Yinghai Lu <yinghai@kernel.org>
    Cc: H. Peter Anvin <hpa@zytor.com>
    ---
    kernel/early_res.c | 6 ++++++
    mm/page_alloc.c | 5 +++++
    2 files changed, 11 insertions(+), 0 deletions(-)

    diff --git a/kernel/early_res.c b/kernel/early_res.c
    index 31aa933..7bfae88 100644
    --- a/kernel/early_res.c
    +++ b/kernel/early_res.c
    @@ -7,6 +7,8 @@
    #include <linux/bootmem.h>
    #include <linux/mm.h>
    #include <linux/early_res.h>
    +#include <linux/slab.h>
    +#include <linux/kmemleak.h>

    /*
    * Early reserved memory areas.
    @@ -319,6 +321,8 @@ void __init free_early(u64 start, u64 end)
    struct early_res *r;
    int i;

    + kmemleak_free_part(__va(start), end - start);
    +
    i = find_overlapped_early(start, end);
    r = &early_res[i];
    if (i >= max_early_res || r->end != end || r->start != start)
    @@ -333,6 +337,8 @@ void __init free_early_partial(u64 start, u64 end)
    struct early_res *r;
    int i;

    + kmemleak_free_part(__va(start), end - start);
    +
    if (start == end)
    return;

    diff --git a/mm/page_alloc.c b/mm/page_alloc.c
    index 431214b..68319dd 100644
    --- a/mm/page_alloc.c
    +++ b/mm/page_alloc.c
    @@ -3659,6 +3659,11 @@ void * __init __alloc_memory_core_early(int nid, u64 size, u64 align,
    ptr = phys_to_virt(addr);
    memset(ptr, 0, size);
    reserve_early_without_check(addr, addr + size, "BOOTMEM");
    + /*
    + * The min_count is set to 0 so that bootmem allocated blocks
    + * are never reported as leaks.
    + */
    + kmemleak_alloc(ptr, size, 0, 0);
    return ptr;
    }



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