On Thu, Dec 07, 2017 at 08:27:37AM +0900, Masami Hiramatsu wrote:
Hi Greg,
On Tue, 05 Dec 2017 18:30:54 +0100 gregkh@linuxfoundation.org wrote:
This is a note to let you know that I've just added the patch titled
kprobes: Use synchronize_rcu_tasks() for optprobe with CONFIG_PREEMPT=yto the 3.18-stable tree which can be found at: https://urldefense.proofpoint.com/v2/url?u=http-3A__www.kernel.org_git_-3Fp-...
The filename of the patch is: kprobes-use-synchronize_rcu_tasks-for-optprobe-with-config_preempt-y.patch and it can be found in the queue-3.18 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.
This is not for bugfix, but improvement. And also, it depends on TASKS_RCU & commit 7e42776d5ed1fe9a941ed8876c5d15cd7cf5d89f.
So, please don't pull it on stable tree.
Thanks for the clarification.
Just to help me understand this better, what I understood from the patch is that we might execute freed trampoline memory, is that not the case here?