On Wed, 2018-09-26 at 06:50 +0200, Udo Steinberg wrote: > Hello all, Hi Udo, > I'm experiencing an iwlwifi crash with Linux 4.18.9 in the following > situation: > 1) I'm suspending the laptop (into S3 sleep state) > 2) Sometimes the laptop immediately wakes up again (as if a wake > event fires) > 3) In the immediate wakeup case iwlwifi crashes > > I'm not sure if in step 2), iwlwifi or something else is causing the > immediate > S3 wakeup after suspend. > > Full dmesg is attached. > > Please CC: me on any replies as I'm not subscribed to the mailing > lists. This is a known bug and unfortunately we cannot fix it anymore since it's a pretty old HW and we don't really have the time to debug it. For reference, this is the bugzilla entry: https://bugzilla.kernel.org/show_bug.cgi?id=190281 >From your dmesg, it seems that we are trying to cancel an ongoing scan before going to suspend and that fails and causes the suspend process to abort. This explains why it only happens sporadically -- i.e. a scan must be running when you suspend. If you're feeling adventurous, you could try to check the code that sends the scan cancellation request when entering suspend and remove that or move it earlier somehow. You don't seem to be using WoWLAN, so not canceling the scan shouldn't hurt because the FW will be stopped and started again anyway. Good luck! -- Cheers, Luca.
