netdev - Re: [PATCH net] wwan_hwsim: fix possible memory leak in wwan_hwsim_dev

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Message-Id: <166622581700.22962.14913328109699543637.git-patchwork-notify@kernel.org>
Date:   Thu, 20 Oct 2022 00:30:17 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Yang Yingliang <yangyingliang@...wei.com>
Cc:     netdev@...r.kernel.org, loic.poulain@...aro.org,
        ryazanov.s.a@...il.com, johannes@...solutions.net,
        davem@...emloft.net
Subject: Re: [PATCH net] wwan_hwsim: fix possible memory leak in
 wwan_hwsim_dev_new()

Hello:

This patch was applied to netdev/net.git (master)
by Jakub Kicinski <kuba@...nel.org>:

On Tue, 18 Oct 2022 21:16:07 +0800 you wrote:
> Inject fault while probing module, if device_register() fails,
> but the refcount of kobject is not decreased to 0, the name
> allocated in dev_set_name() is leaked. Fix this by calling
> put_device(), so that name can be freed in callback function
> kobject_cleanup().
> 
> unreferenced object 0xffff88810152ad20 (size 8):
>   comm "modprobe", pid 252, jiffies 4294849206 (age 22.713s)
>   hex dump (first 8 bytes):
>     68 77 73 69 6d 30 00 ff                          hwsim0..
>   backtrace:
>     [<000000009c3504ed>] __kmalloc_node_track_caller+0x44/0x1b0
>     [<00000000c0228a5e>] kvasprintf+0xb5/0x140
>     [<00000000cff8c21f>] kvasprintf_const+0x55/0x180
>     [<0000000055a1e073>] kobject_set_name_vargs+0x56/0x150
>     [<000000000a80b139>] dev_set_name+0xab/0xe0
> 
> [...]

Here is the summary with links:
  - [net] wwan_hwsim: fix possible memory leak in wwan_hwsim_dev_new()
    https://git.kernel.org/netdev/net/c/258ad2fe5ede

You are awesome, thank you!
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