netdev - Re: [Patch nf] nf_conntrack_extend: silent a memory leak warning

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Message-ID: <20180416154404.eatjnxp25evbon4d@salvia>
Date:   Mon, 16 Apr 2018 17:44:04 +0200
From:   Pablo Neira Ayuso <pablo@...filter.org>
To:     Cong Wang <xiyou.wangcong@...il.com>
Cc:     netdev@...r.kernel.org, netfilter-devel@...r.kernel.org,
        Jozsef Kadlecsik <kadlec@...ckhole.kfki.hu>,
        Florian Westphal <fw@...len.de>
Subject: Re: [Patch nf] nf_conntrack_extend: silent a memory leak warning

On Fri, Mar 30, 2018 at 01:22:06PM -0700, Cong Wang wrote:
> The following memory leak is false postive:
> 
> unreferenced object 0xffff8f37f156fb38 (size 128):
>   comm "softirq", pid 0, jiffies 4294899665 (age 11.292s)
>   hex dump (first 32 bytes):
>     6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b  kkkkkkkkkkkkkkkk
>     00 00 00 00 30 00 20 00 48 6b 6b 6b 6b 6b 6b 6b  ....0. .Hkkkkkkk
>   backtrace:
>     [<000000004fda266a>] __kmalloc_track_caller+0x10d/0x141
>     [<000000007b0a7e3c>] __krealloc+0x45/0x62
>     [<00000000d08e0bfb>] nf_ct_ext_add+0xdc/0x133
>     [<0000000099b47fd8>] init_conntrack+0x1b1/0x392
>     [<0000000086dc36ec>] nf_conntrack_in+0x1ee/0x34b
>     [<00000000940592de>] nf_hook_slow+0x36/0x95
>     [<00000000d1bd4da7>] nf_hook.constprop.43+0x1c3/0x1dd
>     [<00000000c3673266>] __ip_local_out+0xae/0xb4
>     [<000000003e4192a6>] ip_local_out+0x17/0x33
>     [<00000000b64356de>] igmp_ifc_timer_expire+0x23e/0x26f
>     [<000000006a8f3032>] call_timer_fn+0x14c/0x2a5
>     [<00000000650c1725>] __run_timers.part.34+0x150/0x182
>     [<0000000090e6946e>] run_timer_softirq+0x2a/0x4c
>     [<000000004d1e7293>] __do_softirq+0x1d1/0x3c2
>     [<000000004643557d>] irq_exit+0x53/0xa2
>     [<0000000029ddee8f>] smp_apic_timer_interrupt+0x22a/0x235

Applied, thanks.