linux-kernel - Re: [PATCH] crypto: hisilicon - Fix smp_processor

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Date: Fri, 26 Jan 2024 17:05:31 +0800
From: Herbert Xu <herbert@...dor.apana.org.au>
To: Wenkai Lin <linwenkai6@...ilicon.com>
Cc: linux-kernel@...r.kernel.org, linux-crypto@...r.kernel.org,
	liulongfang@...wei.com, fanghao11@...wei.com, acc@...neuler.org
Subject: Re: [PATCH] crypto: hisilicon - Fix smp_processor_id() warnings

On Fri, Jan 19, 2024 at 04:11:07PM +0800, Wenkai Lin wrote:
> Switch to raw_smp_processor_id() to prevent a number of
> warnings from kernel debugging. We do not care about
> preemption here, as the CPU number is only used as a
> poor mans load balancing or device selection. If preemption
> happens during an encrypt/decrypt operation a small performance
> hit will occur but everything will continue to work, so just
> ignore it. This commit is similar to e7a9b05ca4
> ("crypto: cavium - Fix smp_processor_id() warnings").
> 
> [ 7538.874350] BUG: using smp_processor_id() in preemptible [00000000] code: af_alg06/8438
> [ 7538.874368] caller is debug_smp_processor_id+0x1c/0x28
> [ 7538.874373] CPU: 50 PID: 8438 Comm: af_alg06 Kdump: loaded Not tainted 5.10.0.pc+ #18
> [ 7538.874377] Call trace:
> [ 7538.874387]  dump_backtrace+0x0/0x210
> [ 7538.874389]  show_stack+0x2c/0x38
> [ 7538.874392]  dump_stack+0x110/0x164
> [ 7538.874394]  check_preemption_disabled+0xf4/0x108
> [ 7538.874396]  debug_smp_processor_id+0x1c/0x28
> [ 7538.874406]  sec_create_qps+0x24/0xe8 [hisi_sec2]
> [ 7538.874408]  sec_ctx_base_init+0x20/0x4d8 [hisi_sec2]
> [ 7538.874411]  sec_aead_ctx_init+0x68/0x180 [hisi_sec2]
> [ 7538.874413]  sec_aead_sha256_ctx_init+0x28/0x38 [hisi_sec2]
> [ 7538.874421]  crypto_aead_init_tfm+0x54/0x68
> [ 7538.874423]  crypto_create_tfm_node+0x6c/0x110
> [ 7538.874424]  crypto_alloc_tfm_node+0x74/0x288
> [ 7538.874426]  crypto_alloc_aead+0x40/0x50
> [ 7538.874431]  aead_bind+0x50/0xd0
> [ 7538.874433]  alg_bind+0x94/0x148
> [ 7538.874439]  __sys_bind+0x98/0x118
> [ 7538.874441]  __arm64_sys_bind+0x28/0x38
> [ 7538.874445]  do_el0_svc+0x88/0x258
> [ 7538.874447]  el0_svc+0x1c/0x28
> [ 7538.874449]  el0_sync_handler+0x8c/0xb8
> [ 7538.874452]  el0_sync+0x148/0x180
> 
> Signed-off-by: Wenkai Lin <linwenkai6@...ilicon.com>
> ---
>  drivers/crypto/hisilicon/hpre/hpre_main.c | 2 +-
>  drivers/crypto/hisilicon/sec2/sec_main.c  | 2 +-
>  drivers/crypto/hisilicon/zip/zip_main.c   | 2 +-
>  3 files changed, 3 insertions(+), 3 deletions(-)

Patch applied.  Thanks.
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt