On Tue, Apr 26, 2022 at 03:08:26PM -0500, Eric DeVolder wrote:
> Why is it safe to examine kexec_crash_image outside the mutex? As I
> understand it, there is still the (very rare) opportunity for a kdump
> load/unload initiated via userland and this check to collide. (Similarly, I
> believe the mutex entry is almost always assured/likely.)
Yeah, I guess. As the comment in do_kexec_load() says
"KISS: always take the mutex."
so ignore this part of the diff and let's always grab the mutex.
Sorry for the confusion.
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette
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