Messages in this thread | | | Subject | Re: + daemonize-detach-from-current-namespace.patch added to -mm tree | From | (Eric W. Biederman) | Date | Mon, 20 Feb 2006 11:11:13 -0700 |
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Andrew Morton <akpm@osdl.org> writes:
> ebiederm@xmission.com (Eric W. Biederman) wrote: >> >> I am beginning to suspect that we will want to fix kernel_thread so it >> creates copies of the init_task rather than copies of whatever random >> user space process we happen to be a member of at the time. With an >> enhanced kernel_thread this problem could more easily avoided, as >> we add additional namespaces to the kernel. > > You wouldn't believe the problems we had with kernel_thread followed by > call_usermodehelper() due to inheritance of random stuff from the userspace > parent. > > A suitable solution is to stop using kernel_thread(), migrate to the > kthread API - that way the threads are parented by keventd which is a known > and good environment.
Thanks. This sounds worth investigating.
On the other hand call_usermodehelper is the one case where we might want to share some of the attributes with an existing process, at least if we ever want it to run in a non-default namespace.
Eric
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