On Monday, 13 August 2018 03:04:44 HKT Sven Eckelmann wrote:
> The function batadv_tt_global_orig_entry_add is responsible for adding new
> tt_orig_list_entry to the orig_list. It first checks whether the entry
> already is in the list or not. If it is, then the creation of a new entry
> is aborted.
>
> But the lock for the list is only held when the list is really modified.
> This could lead to duplicated entries because another context could create
> an entry with the same key between the check and the list manipulation.
>
> The check and the manipulation of the list must therefore be in the same
> locked code section.
>
> Fixes: c5eb5bb30321 ("batman-adv: add reference counting for type
> batadv_tt_orig_list_entry") Signed-off-by: Sven Eckelmann
> <[email protected]>Acked-by: Marek Lindner <[email protected]> Cheers, Marek
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