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BUG: memory leak
unreferenced object 0xffff88810cabcbc0 (size 32):
  comm "syz-executor263", pid 5046, jiffies 4294963784 (age 113.200s)
  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:
    [<ffffffff815746d5>] kmalloc_trace+0x25/0x90 mm/slab_common.c:1114
    [<ffffffff842328ce>] kmalloc include/linux/slab.h:599 [inline]
    [<ffffffff842328ce>] tcp_md5sig_info_add net/ipv4/tcp_ipv4.c:1176 [inline]
    [<ffffffff842328ce>] tcp_md5_do_add+0x9e/0x150 net/ipv4/tcp_ipv4.c:1247
    [<ffffffff84232ae0>] tcp_v4_parse_md5_keys+0x160/0x2f0 net/ipv4/tcp_ipv4.c:1377
    [<ffffffff8420b27e>] do_tcp_setsockopt+0xfae/0x15a0 net/ipv4/tcp.c:3597
    [<ffffffff8420b906>] tcp_setsockopt+0x96/0xa0 net/ipv4/tcp.c:3673
    [<ffffffff83e9d11e>] __sys_setsockopt+0x1be/0x360 net/socket.c:2325
    [<ffffffff83e9d2e3>] __do_sys_setsockopt net/socket.c:2336 [inline]
    [<ffffffff83e9d2e3>] __se_sys_setsockopt net/socket.c:2333 [inline]
    [<ffffffff83e9d2e3>] __x64_sys_setsockopt+0x23/0x30 net/socket.c:2333
    [<ffffffff84b3b548>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff84b3b548>] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84c0008b>] entry_SYSCALL_64_after_hwframe+0x63/0xcd