[PATCH 4/4] rhashtable: fix vmalloc() deadlock in atomic rehash

Herbert Xu herbert at gondor.apana.org.au
Thu Oct 29 21:48:16 PDT 2026


On Thu, Oct 29, 2026 at 10:53:56AM -0400, Liam R. Howlett (Google) wrote:
>
> Given where we are in the release, this fixes a real issue that can
> happen so maybe we take this now and settle the general handling later?

There is no rush at all since the bug that you found has existed
since 2025:

commit c6307674ed82c0c57d6e1e3408e84ac449ab8e94
Author: Uladzislau Rezki (Sony) <urezki at gmail.com>
Date:   Tue Oct 7 14:20:35 2025 +0200

    mm: kvmalloc: add non-blocking support for vmalloc

Let's take the time to fix this properly.

Thanks,
-- 
Email: Herbert Xu <herbert at gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt



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