BUG: memory leak
unreferenced object 0xffff8881120706a0 (size 32):
  comm "syz-executor797", pid 8476, jiffies 4294942688 (age 8.040s)
  hex dump (first 32 bytes):
    6c 6f 6f 70 30 00 00 00 00 00 00 00 00 00 00 00  loop0...........
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<000000008a578747>] kstrdup+0x36/0x70 mm/util.c:60
    [<0000000088a0b078>] kstrdup_const+0x53/0x80 mm/util.c:83
    [<00000000d59707f9>] kvasprintf_const+0xc2/0x110 lib/kasprintf.c:48
    [<00000000ebec08d9>] kobject_set_name_vargs+0x3b/0xe0 lib/kobject.c:289
    [<00000000ff725b39>] kobject_add_varg lib/kobject.c:384 [inline]
    [<00000000ff725b39>] kobject_init_and_add+0x6d/0xc0 lib/kobject.c:473
    [<00000000fc137156>] nilfs_sysfs_create_device_group+0x98/0x3a0 fs/nilfs2/sysfs.c:999
    [<000000007c217292>] init_nilfs+0x523/0x680 fs/nilfs2/the_nilfs.c:637
    [<00000000e6314aa1>] nilfs_fill_super fs/nilfs2/super.c:1047 [inline]
    [<00000000e6314aa1>] nilfs_mount+0x51b/0x890 fs/nilfs2/super.c:1317
    [<000000004e49c899>] legacy_get_tree+0x2b/0x90 fs/fs_context.c:592
    [<00000000a794cbdc>] vfs_get_tree+0x28/0x100 fs/super.c:1549
    [<00000000d09499db>] do_new_mount fs/namespace.c:2875 [inline]
    [<00000000d09499db>] path_mount+0xbe4/0x1150 fs/namespace.c:3203
    [<000000001177ee7a>] do_mount fs/namespace.c:3216 [inline]
    [<000000001177ee7a>] __do_sys_mount fs/namespace.c:3424 [inline]
    [<000000001177ee7a>] __se_sys_mount fs/namespace.c:3401 [inline]
    [<000000001177ee7a>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3401
    [<00000000a745124c>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
    [<00000000638592fb>] entry_SYSCALL_64_after_hwframe+0x44/0xa9