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 # ./scripts/faddr2line vmlinux efi_mem_reserve_persistent+0x50/0xf8 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); I didn't see anything obviously. Is it just a false positive?