Re: [PATCH RESEND 2/2] Fix some kallsyms_lookup() vs rmmod races

[Ingo Molnar]

* Alexey Dobriyan <adobriyan@xxxxx> wrote:

> [cc'ing folks whose proc files are affected]
> 
> kallsyms_lookup() can call module_address_lookup() which iterates over 
> modules list without module_mutex taken. Comment at the top of 
> module_address_lookup() says it's for oops resolution so races are 
> irrelevant, but in some cases it's reachable from regular code:

looking at the problem from another angle: wouldnt this be something 
that would benefit from freeze_processes()/unfreeze_processes(), and 
hence no locking would be required?

	Ingo
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/