On Sun, Sep 10, 2023 at 10:34:17AM +0200, Jonas Gorski wrote:
> When the membase and pci_dev pointer were moved to a new struct in priv,
> the actual membase users were left untouched, and they started reading
> out arbitrary memory behind the struct instead of registers. This
> unfortunately turned the RNG into a constant number generator, depending
> on the content of what was at that offset.
>
> To fix this, update geode_rng_data_{read,present}() to also get the
> membase via amd_geode_priv, and properly read from the right addresses
> again.
>
> Fixes: 9f6ec8dc574e ("hwrng: geode - Fix PCI device refcount leak")
> Reported-by: Timur I. Davletshin <timur.davletshin@xxxxxxxxx>
> Closes: https://bugzilla.kernel.org/show_bug.cgi?id=217882
> Tested-by: Timur I. Davletshin <timur.davletshin@xxxxxxxxx>
> Suggested-by: Jo-Philipp Wich <jo@xxxxxxx>
> Signed-off-by: Jonas Gorski <jonas.gorski@xxxxxxxxx>
> ---
> drivers/char/hw_random/geode-rng.c | 6 ++++--
> 1 file changed, 4 insertions(+), 2 deletions(-)
Patch applied. Thanks.
--
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