rent: bluetooth)
BUG: memory leak
unreferenced object 0xffff88811330e500 (size 96):
  comm "syz-executor264", pid 7121, jiffies 4294942610 (age 18.660s)
  hex dump (first 32 bytes):
    b8 ee e8 83 ff ff ff ff 08 e5 30 13 81 88 ff ff  ..........0.....
    08 e5 30 13 81 88 ff ff 00 00 00 00 00 00 00 00  ..0.............
  backtrace:
    [<00000000ee80c8f5>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<00000000ee80c8f5>] slab_post_alloc_hook mm/slab.h:439 [inline]
    [<00000000ee80c8f5>] slab_alloc mm/slab.c:3326 [inline]
    [<00000000ee80c8f5>] kmem_cache_alloc_trace+0x13d/0x280 mm/slab.c:3553
    [<000000008275017e>] kmalloc include/linux/slab.h:547 [inline]
    [<000000008275017e>] kzalloc include/linux/slab.h:742 [inline]
    [<000000008275017e>] class_dir_create_and_add drivers/base/core.c:1723 [inline]
    [<000000008275017e>] get_device_parent.isra.0+0x1a8/0x240 drivers/base/core.c:1787
    [<00000000bc2b654e>] device_add+0x136/0x890 drivers/base/core.c:2048
    [<000000005e1fa9c0>] hci_register_dev+0x166/0x380 net/bluetooth/hci_core.c:3305
    [<00000000dafdf4b0>] hci_uart_register_dev drivers/bluetooth/hci_ldisc.c:661 [inline]
    [<00000000dafdf4b0>] hci_uart_set_proto drivers/bluetooth/hci_ldisc.c:685 [inline]
    [<00000000dafdf4b0>] hci_uart_tty_ioctl+0x221/0x350 drivers/bluetooth/hci_ldisc.c:739
    [<000000001950dfdc>] tty_ioctl+0x6e2/0xa30 drivers/tty/tty_io.c:2664
    [<00000000994aa5f2>] vfs_ioctl fs/ioctl.c:46 [inline]
    [<00000000994aa5f2>] file_ioctl fs/ioctl.c:509 [inline]
    [<00000000994aa5f2>] do_vfs_ioctl+0x62a/0x810 fs/ioctl.c:696
    [<0000000056a45abb>] ksys_ioctl+0x86/0xb0 fs/ioctl.c:713
    [<00000000d05b28dd>] __do_sys_ioctl fs/ioctl.c:720 [inline]
    [<00000000d05b28dd>] __se_sys_ioctl fs/ioctl.c:718 [inline]
    [<00000000d05b28dd>] __x64_sys_ioctl+0x1e/0x30 fs/ioctl.c:718
    [<00000000fd95a423>] do_syscall_64+0x76/0x1a0 arch/x86/entry/common.c:301
    [<00000000f2e483af>] entry_SYSCALL_64_after_hwframe+0x44/0xa9