RE: x86/mce: suspicious RCU usage in 4.13.4
From: Luck, Tony
Date: Wed Oct 11 2017 - 17:34:31 EST
> here's a second attempt at a more rigorous simplification: RCU stuff is
> gone and only a single loop scans through the elements.
The dev_mce_log() changes look good now.
You can apply the axe to more bits of mce_chrdev_read() though. Like that
while (!m->finished) {
we hold the mutex, the writer of that holds the mutex ... the spin loop is going to always
time out.
-Tony