On Sunday 04 February 2018 12:23:33 Alexander Sergeyev wrote: > Mario, > > > Would you please try https://patchwork.kernel.org/patch/10194287/ > > And see if it cleans up this null pointer dereference? > > Yes, it does. So problem which I spotted is not only theoretical, but already affects users... Pity that I have not looked at that patch which introduced that problem deeply earlier :-( So there is race condition between initializing dell-laptop driver and calling exported function from this driver. But does not we still have same problem at layer between dell-laptop.ko dell-sbios.ko and dell-smbios-*.ko? To make dell_micmute_led_set() work properly we need to ensure that either WMI or SMM driver is already loaded and initialized. > Is there any estimates on when the patch will be merged into mainline? I > want to put something into my distribution bug tracker, but it's unlikely > they will use this patch before its stabilization. It should go in next round of merging into linus tree and after that with proper commit message tags it should included in next stable versions. -- Pali Rohár pali.rohar@xxxxxxxxx
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