BUG: memory leak
unreferenced object 0xffff88812938fc30 (size 48):
  comm "syz-executor477", pid 7000, jiffies 4294941278 (age 7.930s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 01 46 00 00 03 00 00 00  .........F......
    00 00 00 00 00 00 00 00 00 3b 35 17 81 88 ff ff  .........;5.....
  backtrace:
    [<0000000076b67cdd>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<0000000076b67cdd>] slab_post_alloc_hook mm/slab.h:586 [inline]
    [<0000000076b67cdd>] slab_alloc mm/slab.c:3319 [inline]
    [<0000000076b67cdd>] kmem_cache_alloc+0x13f/0x2c0 mm/slab.c:3483
    [<00000000d4cca6cf>] fasync_alloc fs/fcntl.c:895 [inline]
    [<00000000d4cca6cf>] fasync_add_entry fs/fcntl.c:953 [inline]
    [<00000000d4cca6cf>] fasync_helper+0x37/0xa9 fs/fcntl.c:982
    [<0000000005b35d78>] sock_fasync+0x4d/0xa0 net/socket.c:1293
    [<00000000e25d2285>] ioctl_fioasync fs/ioctl.c:550 [inline]
    [<00000000e25d2285>] do_vfs_ioctl+0x409/0x810 fs/ioctl.c:655
    [<00000000c276c0e0>] ksys_ioctl+0x86/0xb0 fs/ioctl.c:713
    [<00000000ca8ded17>] __do_sys_ioctl fs/ioctl.c:720 [inline]
    [<00000000ca8ded17>] __se_sys_ioctl fs/ioctl.c:718 [inline]
    [<00000000ca8ded17>] __x64_sys_ioctl+0x1e/0x30 fs/ioctl.c:718
    [<00000000458247c6>] do_syscall_64+0x73/0x1f0 arch/x86/entry/common.c:290
    [<00000000b97ef0f8>] entry_SYSCALL_64_after_hwframe+0x44/0xa9