On Thu, Dec 06, 2018 at 11:16:33AM -0500, Qian Cai wrote: > unreferenced object 0xffff8096c1acf580 (size 128): > comm "swapper/63", pid 0, jiffies 4294937418 (age 1201.230s) > hex dump (first 32 bytes): > 80 87 b5 c1 96 00 00 00 00 00 cc c2 16 00 00 00 ................ > 00 00 01 00 00 00 00 00 6b 6b 6b 6b 6b 6b 6b 6b ........kkkkkkkk > backtrace: > [<000000001d2549ba>] kmem_cache_alloc_trace+0x430/0x500 > [<0000000093a6dfab>] efi_mem_reserve_persistent+0x50/0xf8 > [<000000000a730828>] its_cpu_init_lpis+0x394/0x4b8 > [<00000000edf04e07>] its_cpu_init+0x104/0x150 > [<000000004d0342c5>] gic_starting_cpu+0x34/0x40 > [<000000005d9da772>] cpuhp_invoke_callback+0x228/0x1d68 > [<0000000061eace9b>] notify_cpu_starting+0xc0/0x118 > [<0000000048bc2dc5>] secondary_start_kernel+0x23c/0x3b0 > [<0000000015137d6a>] 0xffffffffffffffff > > efi_mem_reserve_persistent+0x50/0xf8: > kmalloc at include/linux/slab.h:546 > (inlined by) efi_mem_reserve_persistent at drivers/firmware/efi/efi.c:979 > > This line, > > rsv = kmalloc(sizeof(*rsv), GFP_ATOMIC); > > Kmemleak has a known limitation that can only track pointers in the kernel > virtual space. Hence, it will report false positives due to "rsv" will only > reference to other physical addresses, > > rsv->next = efi_memreserve_root->next; > efi_memreserve_root->next = __pa(rsv); > > Signed-off-by: Qian Cai <cai@xxxxxx> Acked-by: Catalin Marinas <catalin.marinas@xxxxxxx>
