On Wed, Oct 13, 2021 at 08:47:56AM +0300, Mike Rapoport wrote: > From: Mike Rapoport <rppt@xxxxxxxxxxxxx> > > Vladimir Zapolskiy reports: > > commit a7259df76702 ("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 > > Indeed, NOMAP regions don't have linear map entries so an attempt to scan > these areas would fault. > > Prevent such faults by excluding NOMAP regions from kmemleak. > > Link: https://lore.kernel.org/all/8ade5174-b143-d621-8c8e-dc6a1898c6fb@xxxxxxxxxx > Fixes: a7259df76702 ("memblock: make memblock_find_in_range method private") > Signed-off-by: Mike Rapoport <rppt@xxxxxxxxxxxxx> > Tested-by: Vladimir Zapolskiy <vladimir.zapolskiy@xxxxxxxxxx> Acked-by: Catalin Marinas <catalin.marinas@xxxxxxx>