On Wed, 2018-09-19 at 13:35 -0400, Mikulas Patocka wrote:
On Wed, 19 Sep 2018, Mikulas Patocka wrote:
On Tue, 18 Sep 2018, Dmitry Safonov wrote:
Hi all,
Three fixes that worth to have in the @stable, as they were hit
by
different people, including Arista on v4.9 stable.
And for linux-next - adding lockdep asserts for line discipline
changing
code, verifying that write ldisc sem will be held forthwith.
The last patch is an optional and probably, timeout can be
dropped for
read_lock(). I'll do it if everyone agrees. (Or as per discussion with Peter in v3, just convert ldisc to a regular rwsem).
Thanks, Dima
I confirm that this patch series fixes the crash for me.
Tested-by: Mikulas Patocka mpatocka@redhat.com
I was too quick to acknowledge this patchset. It doesn't work.
This patchset fixes the crash, but it introduces another bug - when I type 'reboot' on the console, it prints 'INIT: Switching to runlevel: 6' and then it gets stuck for 80 seconds before proceeding with the reboot. When I revert this patchset 'reboot' reboots the machine without any delay. This bug was reproduced on Debian 5 userspace on pa-risc.
Thanks much for the testing, Mikulas. Could you try to bisect which of the patches causes it? The most important are 1,2,3 - probably, one of them caused it.. I'll stare a bit into the code.