• Yanjiang Jin's avatar
    powerpc/mm: Free string after creating kmem cache · e77553cb
    Yanjiang Jin authored
    kmem_cache_create()->kmem_cache_create_memcg()->kstrdup() allocates new
    space and copys name's content, so it is safe to free name memory after
    calling kmem_cache_create(). Else kmemleak will report the below
    warning:
    
    unreferenced object 0xc0000000f9002160 (size 16):
      comm "swapper/0", pid 0, jiffies 4294892296 (age 1386.640s)
      hex dump (first 16 bytes):
        70 67 74 61 62 6c 65 2d 32 5e 39 00 de ad be ef  pgtable-2^9.....
      backtrace:
        [<c0000000004e03ec>] .kvasprintf+0x5c/0xa0
        [<c0000000004e045c>] .kasprintf+0x2c/0x50
        [<c00000000002e36c>] .pgtable_cache_add+0xac/0x100
        [<c00000000002e3e4>] .pgtable_cache_init+0x24/0x80
        [<c000000000c6c67c>] .start_kernel+0x228/0x4c8
        [<c000000000000594>] .start_here_common+0x24/0x90
    Signed-off-by: default avatarYanjiang Jin <yanjiang.jin@windriver.com>
    Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
    e77553cb
init_64.c 12.5 KB