netdev - Re: [PATCH net] net: marvell: prestera: fix double free issue on err path

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Date:   Fri, 19 Nov 2021 12:00:11 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Volodymyr Mytnyk <volodymyr.mytnyk@...ision.eu>
Cc:     netdev@...r.kernel.org, vladimir.oltean@....com,
        ioana.ciornei@....com, mickeyr@...vell.com,
        serhiy.pshyk@...ision.eu, taras.chornyi@...ision.eu,
        vmytnyk@...vell.com, tchornyi@...vell.com, davem@...emloft.net,
        kuba@...nel.org, vadym.kochan@...ision.eu,
        serhiy.boiko@...ision.eu, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net] net: marvell: prestera: fix double free issue on err path

Hello:

This patch was applied to netdev/net.git (master)
by David S. Miller <davem@...emloft.net>:

On Thu, 18 Nov 2021 21:51:40 +0200 you wrote:
> From: Volodymyr Mytnyk <vmytnyk@...vell.com>
> 
> fix error path handling in prestera_bridge_port_join() that
> cases prestera driver to crash (see below).
> 
>  Trace:
>    Internal error: Oops: 96000044 [#1] SMP
>    Modules linked in: prestera_pci prestera uio_pdrv_genirq
>    CPU: 1 PID: 881 Comm: ip Not tainted 5.15.0 #1
>    pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
>    pc : prestera_bridge_destroy+0x2c/0xb0 [prestera]
>    lr : prestera_bridge_port_join+0x2cc/0x350 [prestera]
>    sp : ffff800011a1b0f0
>    ...
>    x2 : ffff000109ca6c80 x1 : dead000000000100 x0 : dead000000000122
>     Call trace:
>    prestera_bridge_destroy+0x2c/0xb0 [prestera]
>    prestera_bridge_port_join+0x2cc/0x350 [prestera]
>    prestera_netdev_port_event.constprop.0+0x3c4/0x450 [prestera]
>    prestera_netdev_event_handler+0xf4/0x110 [prestera]
>    raw_notifier_call_chain+0x54/0x80
>    call_netdevice_notifiers_info+0x54/0xa0
>    __netdev_upper_dev_link+0x19c/0x380
> 
> [...]

Here is the summary with links:
  - [net] net: marvell: prestera: fix double free issue on err path
    https://git.kernel.org/netdev/net/c/e8d032507cb7

You are awesome, thank you!
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