Messages in this thread | | | Date | Tue, 29 May 2018 12:07:43 -0400 | From | "Theodore Y. Ts'o" <> | Subject | Re: [PATCH] x86, random: Fix get_random_bytes() warning in x86 start_kernel |
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On Tue, May 29, 2018 at 11:01:07AM -0400, Prarit Bhargava wrote: > Kees, in early boot no pool is available so the stack canary is initialized from > the TSC. Later in boot, the stack canary will use the the crng. > > ie) in early boot only TSC is okay, and late boot (when crng_ready() is true) > the pool will be used.
But that means all of the kernel threads (e.g., workqueues, et. al) would not be well protected by the stack canary. That seems.... rather unfortunate.
- Ted
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