On Wed, Jan 18, 2023 at 08:38:50PM +0530, Manivannan Sadhasivam wrote:
> The memory for "llcc_driv_data" is allocated by the LLCC driver. But when
> it is passed as "pvt_info" to the EDAC core, it will get freed during the
> qcom_edac driver release. So when the qcom_edac driver gets probed again,
> it will try to use the freed data leading to the use-after-free bug.
>
> Hence, do not pass "llcc_driv_data" as pvt_info but rather reference it
> using the "platform_data" in the qcom_edac driver.
>
> Cc: <stable@xxxxxxxxxxxxxxx> # 4.20
> Fixes: 27450653f1db ("drivers: edac: Add EDAC driver support for QCOM SoCs")
> Tested-by: Steev Klimaszewski <steev@xxxxxxxx> # Thinkpad X13s
> Tested-by: Andrew Halaney <ahalaney@xxxxxxxxxx> # sa8540p-ride
> Reported-by: Steev Klimaszewski <steev@xxxxxxxx>
> Reviewed-by: Borislav Petkov (AMD) <bp@xxxxxxxxx>
> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>
> ---
> drivers/edac/qcom_edac.c | 5 ++---
> 1 file changed, 2 insertions(+), 3 deletions(-)
Applied, thanks.
--
Regards/Gruss,
Boris.
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