BUG: memory leak
unreferenced object 0xffff8881257e6800 (size 1024):
  comm "syz-executor.2", pid 19856, jiffies 4295080453 (age 9.250s)
  hex dump (first 32 bytes):
    01 54 00 00 01 00 00 00 00 4c f5 42 81 88 ff ff  .T.......L.B....
    00 d0 f4 42 81 88 ff ff 00 1b a3 84 ff ff ff ff  ...B............
  backtrace:
    [<0000000075670ec2>] kmalloc include/linux/slab.h:552 [inline]
    [<0000000075670ec2>] kzalloc include/linux/slab.h:682 [inline]
    [<0000000075670ec2>] alloc_tty_struct+0x3c/0x2e0 drivers/tty/tty_io.c:2987
    [<00000000c66da03f>] tty_init_dev.part.0+0x20/0x250 drivers/tty/tty_io.c:1335
    [<000000008fa421a9>] tty_init_dev drivers/tty/tty_io.c:1979 [inline]
    [<000000008fa421a9>] tty_open_by_driver drivers/tty/tty_io.c:1987 [inline]
    [<000000008fa421a9>] tty_open+0x882/0xa20 drivers/tty/tty_io.c:2035
    [<00000000d602b5d0>] chrdev_open+0x10d/0x340 fs/char_dev.c:414
    [<00000000b378d863>] do_dentry_open+0x1e6/0x620 fs/open.c:817
    [<0000000095869c3b>] do_open fs/namei.c:3254 [inline]
    [<0000000095869c3b>] path_openat+0x74a/0x1b00 fs/namei.c:3371
    [<000000001526c445>] do_filp_open+0xa0/0x190 fs/namei.c:3398
    [<000000001f59a07b>] do_sys_openat2+0xed/0x230 fs/open.c:1172
    [<00000000978e3412>] do_sys_open fs/open.c:1188 [inline]
    [<00000000978e3412>] __do_sys_openat fs/open.c:1204 [inline]
    [<00000000978e3412>] __se_sys_openat fs/open.c:1199 [inline]
    [<00000000978e3412>] __x64_sys_openat+0x7f/0xe0 fs/open.c:1199
    [<00000000ec1414e8>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
    [<000000008099fd0b>] entry_SYSCALL_64_after_hwframe+0x44/0xa9