On Wed, Sep 20, 2023 at 05:51:45PM +0000, Shaoying Xu wrote:
> From: Budimir Markovic <markovicbudimir@xxxxxxxxx>
>
> [ Upstream commit b3d26c5702c7d6c45456326e56d2ccf3f103e60f ]
>
> HFSC assumes that inner classes have an fsc curve, but it is currently
> possible for classes without an fsc curve to become parents. This leads
> to bugs including a use-after-free.
>
> Don't allow non-root classes without HFSC_FSC to become parents.
>
> Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
> Reported-by: Budimir Markovic <markovicbudimir@xxxxxxxxx>
> Signed-off-by: Budimir Markovic <markovicbudimir@xxxxxxxxx>
> Acked-by: Jamal Hadi Salim <jhs@xxxxxxxxxxxx>
> Link: https://lore.kernel.org/r/20230824084905.422-1-markovicbudimir@xxxxxxxxx
> Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
> [ v4.14: Delete NL_SET_ERR_MSG because extack is not added to hfsc_change_class ]
> Cc: <stable@xxxxxxxxxxxxxxx> # 4.14
Trailing whitespace, please fix your editor :(
Anyway, now queued up, thanks.
greg k-h
