Re: BUG: unable to handle kernel paging request from pty_write [was: Linux 4.4.2]

From: Linus Torvalds
Date: Fri Feb 26 2016 - 12:12:52 EST

On Fri, Feb 26, 2016 at 12:56 AM, Jiri Slaby <jslaby@xxxxxxx> wrote:
> Sure, both vmlinux w/ its separated .debuginfo sections vmlinux.debug
> are at:

I'm not seeing anything odd there.

It does feel like CPU state corruption - either due to a qemu bug, or
due to some odd trap/interrupt handling bug of ours.

Or possibly a CPU/microcode bug. You wouldn't happen to run this on an
AMD Piledriver-based CPU with the 0x06000832 microcode?

Because we do have a pending qemu-related bug-report that turned out
to be a AMD microcode problem with NMI delivery. Looking at that bug
report, it actually looks rather similar - also due to a confused RIP.