linux-kernel - Scenario TREE07 with CONFIG_PREEMPT

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Thu, 10 Mar 2022 13:56:30 -0800
From:   "Paul E. McKenney" <paulmck@...nel.org>
To:     frederic@...nel.org
Cc:     linux-kernel@...r.kernel.org
Subject: Scenario TREE07 with CONFIG_PREEMPT_DYNAMIC=n?

Hello, Frederic,

I recently added CONFIG_PREEMPT_DYNAMIC=n to the TREE07 file, and since
then am getting roughly one RCU CPU stall warning (or silent hang)
per few tens of hours of rcutorture testing on dual-socket systems.
The stall warnings feature starvation of RCU grace-period kthread.

Any advice on debugging this?

							Thanx, Paul