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SubjectRe: [PATCH] pidfd: Stop taking cred_guard_mutex
On Tue, Mar 10, 2020 at 03:57:35PM -0500, Eric W. Biederman wrote:
> So ptrace_attach and seccomp use the cred_guard_mutex to guarantee
> a deadlock.

Well, that's the result, but seccomp uses it because it wants to
be certain that credentials and no_new_privs are changed together

Kees Cook

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