# Re: new kmemleak reports (was: Re: \[PATCH 0/5\] genetlink improvements)

- From: Cong Wang \<hidden\>
- Date: 2016-11-01 18:33:13 
- List: netdev
- Page: https://ratatoskr.run/netdev/2016/11/11033414
- Thread: https://ratatoskr.run/netdev/2016/10/11032467/t.md

```text
On Tue, Nov 1, 2016 at 10:28 AM, Jakub Kicinski [ref] wrote:
> unreferenced object 0xffff8807389cba28 (size 128):
>   comm "swapper/0", pid 1, jiffies 4294898463 (age 781.332s)
>   hex dump (first 32 bytes):
>     6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b  kkkkkkkkkkkkkkkk
>     6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b  kkkkkkkkkkkkkkkk
>   backtrace:
>     [<ffffffff85decad8>] kmemleak_alloc+0x28/0x50
>     [<ffffffff84771246>] __kmalloc+0x206/0x5a0
>     [<ffffffff859e1261>] genl_register_family+0x711/0x11d0
>     [<ffffffff888d9524>] netlbl_mgmt_genl_init+0x10/0x12
>     [<ffffffff888d91e8>] netlbl_netlink_init+0x9/0x26
>     [<ffffffff888d9254>] netlbl_init+0x4f/0x85
>     [<ffffffff840022b7>] do_one_initcall+0xb7/0x2a0
>     [<ffffffff887f9102>] kernel_init_freeable+0x597/0x636
>     [<ffffffff85de7793>] kernel_init+0x13/0x140
>     [<ffffffff85e0246a>] ret_from_fork+0x2a/0x40

Looks like we are missing a kfree(family->attrbuf); on error path,
but it is not related to Johannes' recent patches.

Could the attached patch help?

Thanks.
```

## Attachments

- [genetlink.diff](https://ratatoskr.run/netdev/2016/11/11033414/attachment/0) (text/plain, 632 bytes)