On Sat, Feb 03, 2018 at 07:20:21PM +0300, Alexander Sergeyev wrote:
# first bad commit: [549b4930f057658dc50d8010e66219233119a4d8] platform/x86: dell-smbios: Introduce dispatcher for SMM calls
From source code (at 549b4930f057) it looks like dell_set_arguments() which writes to `buffer` is called before the buffer gets allocated
Turns out that the problem has already surfaced before, but from a different origin -- namely, rfkill interface [1]. This was subsequently fixed in 5246741a3f2e and c6f9288ee460.
This time there is an ordering problem between initialization of the dell-laptop module and audio modules which are trying to flash a microphone mute led on keyboard (via dell-laptop interface).
And about suspend-to-ram wakeup problem -- is it possible that there was some buggy interaction with smbios that led to the observed behaviour?
[1] https://lkml.org/lkml/2017/11/15/705
