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SubjectRe: [PATCH net] net: marvell: prestera: fix double free issue on err path
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Hello:

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

On Thu, 18 Nov 2021 21:51:40 +0200 you wrote:
> From: Volodymyr Mytnyk <vmytnyk@marvell.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

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