Re: [PATCH 1/1] exec: do not sleep in TASK_TRACED under ->cred_guard_mutex

From: David Howells
Date: Fri Sep 04 2009 - 10:49:47 EST

Oleg Nesterov <oleg@xxxxxxxxxx> wrote:

> - install_exec_creds() drops the mutex after commit_creds(),
> and thus before tracehook_report_exec()->ptrace_stop().


> -
> - /* cred_guard_mutex must be held at least to this point to prevent
> - * ptrace_attach() from altering our determination of the task's
> - * credentials; any time after this it may be unlocked */
> -

Why are you removing this comment, btw? In what way does your patch
invalidate it?

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