BUG: memory leak
unreferenced object 0xffff888122773800 (size 96):
  comm "syz-executor854", pid 7034, jiffies 4294942416 (age 8.100s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<000000001e759822>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<000000001e759822>] slab_post_alloc_hook mm/slab.h:522 [inline]
    [<000000001e759822>] slab_alloc mm/slab.c:3319 [inline]
    [<000000001e759822>] kmem_cache_alloc_trace+0x145/0x2c0 mm/slab.c:3548
    [<000000002a7f6e40>] kmalloc include/linux/slab.h:552 [inline]
    [<000000002a7f6e40>] kzalloc include/linux/slab.h:748 [inline]
    [<000000002a7f6e40>] sctp_stream_init_ext+0x2b/0xe0 net/sctp/stream.c:158
    [<00000000e8f6279a>] sctp_sendmsg_to_asoc+0x94a/0xa10 net/sctp/socket.c:1882
    [<0000000069717f73>] sctp_sendmsg+0x2a8/0x990 net/sctp/socket.c:2102
    [<00000000b5559073>] inet_sendmsg+0x3e/0x60 net/ipv4/af_inet.c:807
    [<000000003a778dfa>] sock_sendmsg_nosec net/socket.c:637 [inline]
    [<000000003a778dfa>] sock_sendmsg+0x54/0x70 net/socket.c:657
    [<000000006729c4bb>] sock_write_iter+0xb6/0x130 net/socket.c:989
    [<00000000b6af6a21>] call_write_iter include/linux/fs.h:1870 [inline]
    [<00000000b6af6a21>] new_sync_write+0x1ad/0x260 fs/read_write.c:483
    [<00000000acf53c55>] __vfs_write+0x87/0xa0 fs/read_write.c:496
    [<00000000fc2591f0>] vfs_write fs/read_write.c:558 [inline]
    [<00000000fc2591f0>] vfs_write+0xee/0x210 fs/read_write.c:542
    [<0000000055ee8b87>] ksys_write+0x7c/0x130 fs/read_write.c:611
    [<00000000e2bb3e3a>] __do_sys_write fs/read_write.c:623 [inline]
    [<00000000e2bb3e3a>] __se_sys_write fs/read_write.c:620 [inline]
    [<00000000e2bb3e3a>] __x64_sys_write+0x1e/0x30 fs/read_write.c:620
    [<000000002a19aa05>] do_syscall_64+0x76/0x1a0 arch/x86/entry/common.c:296
    [<00000000a0e27a79>] entry_SYSCALL_64_after_hwframe+0x44/0xa9