r0 = socket$inet6(0xa, 0x2, 0x0)
setsockopt$inet6_int(r0, 0x29, 0x21, &(0x7f0000000040)=0x81, 0x4)
connect$inet6(0xffffffffffffffff, &(0x7f0000000080)={0xa, 0x0, 0xfe80, @loopback}, 0x1c)
BUG: memory leak
unreferenced object 0xffff88800cfa9380 (size 352):
  comm "syz-executor.1", pid 5039, jiffies 4295057621 (age 19.438s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    46 00 00 00 00 00 00 00 8d b7 b5 04 00 00 00 00  F...............
  backtrace:
    [<000000008dfb7173>] kmem_cache_zalloc include/linux/slab.h:705 [inline]
    [<000000008dfb7173>] taskstats_tgid_alloc kernel/taskstats.c:561 [inline]
    [<000000008dfb7173>] taskstats_exit+0x5c6/0xac0 kernel/taskstats.c:600
    [<000000005b37cd1d>] do_exit+0x994/0x2960 kernel/exit.c:817
    [<0000000041d9fd28>] do_group_exit+0x125/0x310 kernel/exit.c:929
    [<00000000e98b6ac4>] __do_sys_exit_group kernel/exit.c:940 [inline]
    [<00000000e98b6ac4>] __se_sys_exit_group kernel/exit.c:938 [inline]
    [<00000000e98b6ac4>] __x64_sys_exit_group+0x3a/0x50 kernel/exit.c:938
    [<00000000d104cd8d>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<00000000d104cd8d>] do_syscall_64+0x3b/0x90 arch/x86/entry/common.c:80
    [<0000000081ca9bde>] entry_SYSCALL_64_after_hwframe+0x44/0xae

BUG: leak checking failed