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mm: kmemleak: alloc gray object for reserved region with direct map

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Reserved regions with direct mapping may contain references to other
regions.  CMA region with fixed location is reserved without creating
kmemleak_object for it.

So add them as gray kmemleak objects.

Link: https://lkml.kernel.org/r/20211123090641.3654006-1-calvinzhang.cool@gmail.com
Signed-off-by: Calvin Zhang <calvinzhang.cool@gmail.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Frank Rowand <frowand.list@gmail.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Calvin Zhang 2022-01-14 14:04:08 -08:00 committed by Linus Torvalds
parent ad1a3e15fc
commit 972fa3a7c1
1 changed files with 5 additions and 1 deletions
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6
drivers/of/fdt.c
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@ -26,6 +26,7 @@
#include <linux/serial_core.h>
#include <linux/sysfs.h>
#include <linux/random.h>
#include <linux/kmemleak.h>
#include <asm/setup.h> /* for COMMAND_LINE_SIZE */
#include <asm/page.h>
@ -522,9 +523,12 @@ static int __init __reserved_mem_reserve_reg(unsigned long node,
size = dt_mem_next_cell(dt_root_size_cells, &prop);
if (size &&
early_init_dt_reserve_memory_arch(base, size, nomap) == 0)
early_init_dt_reserve_memory_arch(base, size, nomap) == 0) {
pr_debug("Reserved memory: reserved region for node '%s': base %pa, size %lu MiB\n",
uname, &base, (unsigned long)(size / SZ_1M));
if (!nomap)
kmemleak_alloc_phys(base, size, 0, 0);
}
else
pr_info("Reserved memory: failed to reserve memory for node '%s': base %pa, size %lu MiB\n",
uname, &base, (unsigned long)(size / SZ_1M));