Messages in this thread | | | From | Evgeny Novikov <> | Subject | hwmon: (sis5595) potential null pointer dereference in probe | Date | Tue, 04 Aug 2020 14:50:01 +0300 |
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sis5595_pci_probe() registers platform driver callbacks and just then initializes global pointer variable s_bridge. sis5595_probe() may dereference it before this happens that can result in null pointer dereference.
We can not swap registration of platform driver callbacks with initialization of s_bridge since sm_sis5595_exit() assumes the current order. Perhaps it has sense to implement a pci_driver.remove callback that will take care about deregistration of platform driver callbacks.
Found by Linux Driver Verification project (linuxtesting.org).
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