BUG: memory leak
unreferenced object 0xffff888110ad5cc0 (size 32):
  comm "syz-executor321", pid 8472, jiffies 4294942824 (age 12.830s)
  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:
    [<0000000005692690>] kstrdup+0x36/0x70 mm/util.c:60
    [<000000002a46576e>] kstrdup_const+0x53/0x80 mm/util.c:83
    [<00000000b5f16b37>] kvasprintf_const+0xc2/0x110 lib/kasprintf.c:48
    [<00000000effa3364>] kobject_set_name_vargs+0x3b/0xe0 lib/kobject.c:289
    [<000000007d02730b>] kobject_add_varg lib/kobject.c:384 [inline]
    [<000000007d02730b>] kobject_init_and_add+0x6d/0xc0 lib/kobject.c:473
    [<000000009db14aaa>] nilfs_sysfs_create_device_group+0x98/0x3a0 fs/nilfs2/sysfs.c:999
    [<0000000017b75cf4>] init_nilfs+0x523/0x680 fs/nilfs2/the_nilfs.c:637
    [<00000000a61009d7>] nilfs_fill_super fs/nilfs2/super.c:1046 [inline]
    [<00000000a61009d7>] nilfs_mount+0x51b/0x890 fs/nilfs2/super.c:1316
    [<00000000e67b8a3c>] legacy_get_tree+0x2b/0x90 fs/fs_context.c:592
    [<000000009e4ca47f>] vfs_get_tree+0x28/0x100 fs/super.c:1549
    [<00000000a283fa4d>] do_new_mount fs/namespace.c:2875 [inline]
    [<00000000a283fa4d>] path_mount+0xc5e/0x1170 fs/namespace.c:3205
    [<00000000ecb9093f>] do_mount fs/namespace.c:3218 [inline]
    [<00000000ecb9093f>] __do_sys_mount fs/namespace.c:3426 [inline]
    [<00000000ecb9093f>] __se_sys_mount fs/namespace.c:3403 [inline]
    [<00000000ecb9093f>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3403
    [<0000000076ce3bbe>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
    [<00000000d2e92a39>] entry_SYSCALL_64_after_hwframe+0x44/0xa9