On Mon, Aug 05, 2024 at 11:27:13AM -0700, Eric Biggers wrote:
> From: Eric Biggers <ebiggers@xxxxxxxxxx>
>
> On PREEMPT_RT, kfree() takes sleeping locks and must not be called with
> preemption disabled. Therefore, on PREEMPT_RT skcipher_walk_done() must
> not be called from within a kernel_fpu_{begin,end}() pair, even when
> it's the last call which is guaranteed to not allocate memory.
>
> Therefore, move the last skcipher_walk_done() in gcm_crypt() to the end
> of the function so that it goes after the kernel_fpu_end(). To make
> this work cleanly, rework the data processing loop to handle only
> non-last data segments.
>
> Fixes: b06affb1cb58 ("crypto: x86/aes-gcm - add VAES and AVX512 / AVX10 optimized AES-GCM")
> Reported-by: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
> Closes: https://lore.kernel.org/linux-crypto/20240802102333.itejxOsJ@xxxxxxxxxxxxx
> Signed-off-by: Eric Biggers <ebiggers@xxxxxxxxxx>
> ---
> arch/x86/crypto/aesni-intel_glue.c | 59 ++++++++++++++----------------
> 1 file changed, 28 insertions(+), 31 deletions(-)
Patch applied. Thanks.
--
Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Home Page: http://gondor.apana.org.au/~herbert/
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