[Bug report] hash_name() may cross page boundary and trigger sleep in RCU context

Linus Torvalds torvalds at linux-foundation.org
Tue Dec 2 14:07:25 PST 2025


On Tue, 2 Dec 2025 at 04:43, Russell King (Oracle)
<linux at armlinux.org.uk> wrote:
>
> What I'm thinking is to address both of these by handling kernel space
> page faults (which will be permission or PTE-not-present) separately
> (not even build tested):

That patch looks sane to me.

But I also didn't build test it, just scanned it visually ;)

            Linus



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