Messages in this thread | | | Date | Tue, 5 Jan 2021 08:57:31 +0100 | From | Christoph Hellwig <> | Subject | Re: Does uaccess_kernel() work for detecting kernel thread? |
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On Tue, Dec 22, 2020 at 11:33:58AM -0600, Eric W. Biederman wrote: > I do wonder though if perhaps we should create a is_user_cred helper to > detect the difference between the creds of kernel threads and the thread > of ordinary userspace. Which would handle io_uring that copy creds > around and check them at a later time more cleanly.
I don't think we should as no one has a business to check this difference. If there is a case where the creds are not correct for all access decisions we need to fix that rather than adding hacks.
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