Mike Rapoport 658aafc813 memblock: exclude MEMBLOCK_NOMAP regions from kmemleak ... Vladimir Zapolskiy reports: Commit a7259df767 ("memblock: make memblock_find_in_range method private") invokes a kernel panic while running kmemleak on OF platforms with nomaped regions: Unable to handle kernel paging request at virtual address fff000021e00000 [...] scan_block+0x64/0x170 scan_gray_list+0xe8/0x17c kmemleak_scan+0x270/0x514 kmemleak_write+0x34c/0x4ac The memory allocated from memblock is registered with kmemleak, but if it is marked MEMBLOCK_NOMAP it won't have linear map entries so an attempt to scan such areas will fault. Ideally, memblock_mark_nomap() would inform kmemleak to ignore MEMBLOCK_NOMAP memory, but it can be called before kmemleak interfaces operating on physical addresses can use __va() conversion. Make sure that functions that mark allocated memory as MEMBLOCK_NOMAP take care of informing kmemleak to ignore such memory. Link: https://lore.kernel.org/all/8ade5174-b143-d621-8c8e-dc6a1898c6fb@linaro.org Link: https://lore.kernel.org/all/c30ff0a2-d196-c50d-22f0-bd50696b1205@quicinc.com Fixes: a7259df767 ("memblock: make memblock_find_in_range method private") Reported-by: Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org> Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Tested-by: Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org> Tested-by: Qian Cai <quic_qiancai@quicinc.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2021-10-21 18:30:49 -10:00
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unittest-data	…
Kconfig	…
Makefile	…
address.c	of: Move of_dma_set_restricted_buffer() into device.c	2021-08-23 06:32:02 -04:00
base.c	fbdev: simplefb: fix Kconfig dependencies	2021-10-06 11:12:28 +02:00
device.c	of: restricted dma: Fix condition for rmem init	2021-09-17 15:58:09 -05:00
dynamic.c	…
fdt.c	of: fdt: Rename reserve_elfcorehdr() to fdt_reserve_elfcorehdr()	2021-08-25 13:13:31 -05:00
fdt_address.c	…
irq.c	…
kexec.c	of: kexec: Remove FDT_PROP_* definitions	2021-07-16 14:05:38 -06:00
kobj.c	of: Don't allow __of_attached_node_sysfs() without CONFIG_SYSFS	2021-08-23 13:52:09 -05:00
of_net.c	…
of_numa.c	…
of_private.h	of: Move of_dma_set_restricted_buffer() into device.c	2021-08-23 06:32:02 -04:00
of_reserved_mem.c	memblock: exclude MEMBLOCK_NOMAP regions from kmemleak	2021-10-21 18:30:49 -10:00
overlay.c	…
pdt.c	…
platform.c	iommu: Drop unnecessary of_iommu.h includes	2021-06-08 14:15:46 +02:00
property.c	Revert "of: property: fw_devlink: Add support for "phy-handle" property"	2021-09-15 08:14:32 -05:00
resolver.c	…
unittest.c	of: unittest: Use DEFINE_RES_MEM() to simplify code	2021-06-04 17:29:18 -05:00