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119816136c
This patch fixes a race condition between tegra_dce_unregister_ipc_client and dce_client_ipc_wakeup. If dce_client_ipc_wakeup is called just after unregistering it'll result in accessing already freed data structures and kernel crash. This patch adds a check to validate if the client_ipc struct is valid before accessing its members. Bug 4913921 Change-Id: Ie7f25379d7254d1f1ad4fb17baafee353f6d9eca Signed-off-by: Mahesh Kumar <mahkumar@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3239873 GVS: buildbot_gerritrpt <buildbot_gerritrpt@nvidia.com> Reviewed-by: Vinod Gopalakrishnakurup <vinodg@nvidia.com>