Re: [PATCH v6 10/16] kernel/kcmp.c: Use new infrastructure to fix deadlocks in execve

On Fri, Mar 20, 2020 at 09:27:05PM +0100, Bernd Edlinger wrote:

This changes kcmp_epoll_target to use the new exec_update_mutex instead of cred_guard_mutex.

This should be safe, as the credentials are only used for reading, and furthermore ->mm and ->sighand are updated on execve, but only under the new exec_update_mutex.

Signed-off-by: Bernd Edlinger bernd.edlinger@hotmail.de

Acked-by: Christian Brauner christian.brauner@ubuntu.com