Displaying 3 results from an estimated 3 matches for "wpan4".
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span4
2023 Aug 19
1
[Bridge] [PATCH] net: bridge: Fix refcnt issues in dev_ioctl
...e is deleted later.
> If you reproduced it, is the device later removed or is it really stuck?
I ran the reproducer again without the patch and it seems you are
correct. It was trying to create a very short-lived bridge, then delete
it immediately in the next call. The device in question "wpan4" never
showed up when I polled with `ip link` in the VM, so I'd say it did not
get stuck.
> How would it leak a reference, could you elaborate?
> The reference is always taken and always released after the call.
This was where I got a bit confused too. The system had a timeout of
1...
2023 Aug 19
1
[Bridge] [PATCH] net: bridge: Fix refcnt issues in dev_ioctl
Hi Ziqi,
On 8/19/23 11:10, Ziqi Zhao wrote:
> In the bug reported by Syzbot, certain bridge devices would have a
> leaked reference created by race conditions in dev_ioctl, specifically,
> under SIOCBRADDIF or SIOCBRDELIF operations. The reference leak would
How would it leak a reference, could you elaborate?
The reference is always taken and always released after the call.
> be
2023 Aug 22
1
[Bridge] [PATCH] net: bridge: Fix refcnt issues in dev_ioctl
...;> If you reproduced it, is the device later removed or is it really stuck?
>
> I ran the reproducer again without the patch and it seems you are
> correct. It was trying to create a very short-lived bridge, then delete
> it immediately in the next call. The device in question "wpan4" never
> showed up when I polled with `ip link` in the VM, so I'd say it did not
> get stuck.
>
>> How would it leak a reference, could you elaborate?
>> The reference is always taken and always released after the call.
>
> This was where I got a bit confused t...