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authorCalvin Zhang <calvinzhang.cool@gmail.com>2022-01-14 14:04:08 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2022-01-15 16:30:25 +0200
commit972fa3a7c17c9d60212e32ecc0205dc585b1e769 (patch)
treeaf556f8049c34c04ccbe38490d4a1bd0c4edd1e6 /drivers/of
parentad1a3e15fcd3b8ba0f5f60f6a2fe3938274fdf65 (diff)
mm: kmemleak: alloc gray object for reserved region with direct map
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>
Diffstat (limited to 'drivers/of')
-rw-r--r--drivers/of/fdt.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index bdca35284ceb..116c582fea7a 100644
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -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));