BUG: memory leak
unreferenced object 0xffff888127a27400 (size 1024):
  comm "syz-executor.2", pid 10305, jiffies 4295043504 (age 11.230s)
  hex dump (first 32 bytes):
    01 54 00 00 01 00 00 00 00 cc 2a 42 81 88 ff ff  .T........*B....
    00 13 1e 42 81 88 ff ff 00 4c a3 84 ff ff ff ff  ...B.....L......
  backtrace:
    [<ffffffff824b579c>] kmalloc include/linux/slab.h:556 [inline]
    [<ffffffff824b579c>] kzalloc include/linux/slab.h:686 [inline]
    [<ffffffff824b579c>] alloc_tty_struct+0x3c/0x2e0 drivers/tty/tty_io.c:3122
    [<ffffffff824b5a60>] tty_init_dev.part.0+0x20/0x250 drivers/tty/tty_io.c:1430
    [<ffffffff824b6942>] tty_init_dev drivers/tty/tty_io.c:2094 [inline]
    [<ffffffff824b6942>] tty_open_by_driver drivers/tty/tty_io.c:2102 [inline]
    [<ffffffff824b6942>] tty_open+0x882/0xa20 drivers/tty/tty_io.c:2150
    [<ffffffff815629ad>] chrdev_open+0x10d/0x340 fs/char_dev.c:414
    [<ffffffff81551513>] do_dentry_open+0x1e3/0x610 fs/open.c:826
    [<ffffffff815759ce>] do_open fs/namei.c:3361 [inline]
    [<ffffffff815759ce>] path_openat+0x135e/0x1bc0 fs/namei.c:3494
    [<ffffffff81579131>] do_filp_open+0xb1/0x1a0 fs/namei.c:3521
    [<ffffffff81554d3d>] do_sys_openat2+0xed/0x230 fs/open.c:1187
    [<ffffffff8155559f>] do_sys_open fs/open.c:1203 [inline]
    [<ffffffff8155559f>] __do_sys_openat fs/open.c:1219 [inline]
    [<ffffffff8155559f>] __se_sys_openat fs/open.c:1214 [inline]
    [<ffffffff8155559f>] __x64_sys_openat+0x7f/0xe0 fs/open.c:1214
    [<ffffffff843540ea>] do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47
    [<ffffffff84400068>] entry_SYSCALL_64_after_hwframe+0x44/0xae