Re: [PATCH] net: stmmac: fix kernel panic due to NULL pointer dereference of mdio_bus_data
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From: Jakub Kicinski <kuba@kernel.org>
Date: 2021-05-30 21:16:27
Also in:
linux-arm-kernel, lkml
On Fri, 28 May 2021 12:40:56 +0530 Sriranjani P wrote:
Fixed link does not need mdio bus and in that case mdio_bus_data will not be allocated. Before using mdio_bus_data we should check for NULL. This patch fix the kernel panic due to NULL pointer dereference of mdio_bus_data when it is not allocated. Without this patch we do see following kernel crash caused due to kernel NULL pointer dereference.
Applied, thanks.