Re: [PATCH v5 09/21] drivers: crypto: meson: process more than MAXDESCS descriptors

[neil . armstrong]

On 22/03/2024 09:27, Corentin Labbe wrote:
> Le Fri, Mar 01, 2024 at 04:29:24PM +0300, Alexey Romanov a écrit :
> > 1. The old alhorithm was not designed to process a large
> > amount of memory, and therefore gave incorrect results.
> >
> > 2. Not all Amlogic SoC's use 3 KEY/IV descriptors.
> > Add keyiv descriptors count parameter to platform data.
> >
> > Signed-off-by: Alexey Romanov <avromanov@xxxxxxxxxxxxxxxxx>
> > ---
> >   drivers/crypto/amlogic/amlogic-gxl-cipher.c | 441 ++++++++++++--------
> >   drivers/crypto/amlogic/amlogic-gxl-core.c   |   1 +
> >   drivers/crypto/amlogic/amlogic-gxl.h        |   2 +
> >   3 files changed, 280 insertions(+), 164 deletions(-)
>
> Hello
>
> I have started to test by adding patch one by one and when testing this one I got:
> [   21.674995] gxl-crypto c883e000.crypto: will run requests pump with realtime priority
> [   21.679686] gxl-crypto c883e000.crypto: will run requests pump with realtime priority
> [   21.704366] ------------[ cut here ]------------
> [   21.704480] DMA-API: gxl-crypto c883e000.crypto: device driver tries to sync DMA memory it has not allocated [device address=0x000000000264c000] [size=48 bytes]
> [   21.717684] WARNING: CPU: 1 PID: 263 at kernel/dma/debug.c:1105 check_sync+0x1d0/0x688
> [   21.725512] Modules linked in: meson_rng meson_gxbb_wdt rng_core amlogic_gxl_crypto(+) meson_canvas libphy(+) watchdog ghash_generic gcm xctr xts cts essiv authenc cmac xcbc ccm
> [   21.741211] CPU: 1 PID: 263 Comm: c883e000.crypto Not tainted 6.8.0-rc1-00052-g595d4248b127 #24
> [   21.749834] Hardware name: Libre Computer AML-S905X-CC (DT)
> [   21.755353] pstate: 600000c5 (nZCv daIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
> [   21.762252] pc : check_sync+0x1d0/0x688
> [   21.766047] lr : check_sync+0x1d0/0x688
> [   21.769842] sp : ffff8000820fbb40
> [   21.773119] x29: ffff8000820fbb40 x28: 0000000000000000 x27: 0000000000000000
> [   21.780192] x26: ffff800081d639d0 x25: 0000000000001327 x24: ffff00000288b010
> [   21.787265] x23: 0000000000000050 x22: 0000000000001327 x21: ffff800081c23a20
> [   21.794336] x20: ffff800080fe0bb8 x19: ffff8000820fbbc0 x18: 0000000000000006
> [   21.801410] x17: 645b206465746163 x16: 6f6c6c6120746f6e x15: ffff8000820fb540
> [   21.808482] x14: 000000000000000b x13: ffff800081002748 x12: 0000000000000249
> [   21.815554] x11: 00000000000000c3 x10: ffff80008105a748 x9 : ffff800081002748
> [   21.822626] x8 : 00000000ffffefff x7 : ffff80008105a748 x6 : 80000000fffff000
> [   21.829700] x5 : ffff00007d9abb08 x4 : 0000000000000000 x3 : 0000000000000027
> [   21.836772] x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff00000b314ec0
> [   21.843844] Call trace:
> [   21.846260]  check_sync+0x1d0/0x688
> [   21.849710]  debug_dma_sync_single_for_device+0xb8/0xc0
> [   21.854885]  dma_sync_single_for_device+0xc0/0x11c
> [   21.859628]  meson_handle_cipher_request+0x49c/0x7c4 [amlogic_gxl_crypto]
> [   21.866356]  crypto_pump_work+0x160/0x2ac
> [   21.870324]  kthread_worker_fn+0xe4/0x300
> [   21.874291]  kthread+0x11c/0x120
> [   21.877483]  ret_from_fork+0x10/0x20
> [   21.881020] irq event stamp: 9880
> [   21.884296] hardirqs last  enabled at (9879): [<ffff800080988834>] _raw_spin_unlock_irqrestore+0x6c/0x70
> [   21.893698] hardirqs last disabled at (9880): [<ffff800080987ca0>] _raw_spin_lock_irqsave+0x84/0x88
> [   21.902668] softirqs last  enabled at (5638): [<ffff800080010674>] __do_softirq+0x494/0x4dc
> [   21.910947] softirqs last disabled at (5627): [<ffff8000800161f0>] ____do_softirq+0x10/0x1c
> [   21.919227] ---[ end trace 0000000000000000 ]---

I confirm I see the same starting with this change with DMA_API_DEBUG=1

[    4.745240] ------------[ cut here ]------------
[    4.745295] DMA-API: gxl-crypto c883e000.crypto: device driver tries to sync DMA memory it has not allocated [device address=0x000000000a816030] [size=16 bytes]
[    4.758496] WARNING: CPU: 3 PID: 75 at kernel/dma/debug.c:1105 check_sync+0x1d8/0x690
[    4.766242] Modules linked in:
[    4.769258] CPU: 3 PID: 75 Comm: c883e000.crypto Not tainted 6.8.0-rc6-next-20240229-g99fbe5828431 #167
[    4.778576] Hardware name: Libre Computer AML-S905X-CC (DT)
[    4.784094] pstate: 600000c5 (nZCv daIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[    4.790993] pc : check_sync+0x1d8/0x690
[    4.794786] lr : check_sync+0x1d8/0x690
[    4.798581] sp : ffff800082563b90
[    4.801859] x29: ffff800082563b90 x28: ffff8000816ef298 x27: 0000000000000000
[    4.808934] x26: ffff0000041ed010 x25: 0000000000000018 x24: 0000000000004000
[    4.816006] x23: ffff8000816d1190 x22: 0000000000004000 x21: ffff800081539b50
[    4.823079] x20: ffff800082563c40 x19: ffff8000816ef2b0 x18: 0000000000000030
[    4.830151] x17: 645b206465746163 x16: 6f6c6c6120746f6e x15: 0720072007200720
[    4.837223] x14: ffff80008154f2c0 x13: 00000000000002a6 x12: 00000000000000e2
[    4.844296] x11: 0720072007200720 x10: ffff8000815a72c0 x9 : 00000000fffff000
[    4.851369] x8 : ffff80008154f2c0 x7 : ffff8000815a72c0 x6 : 0000000000000000
[    4.858441] x5 : 80000000fffff000 x4 : 000000000000aff5 x3 : 0000000000000000
[    4.865514] x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0000091a9100
[    4.872587] Call trace:
[    4.874999]  check_sync+0x1d8/0x690
[    4.878449]  debug_dma_sync_single_for_cpu+0x84/0x8c
[    4.883366]  dma_sync_single_for_cpu+0x58/0x10c
[    4.887851]  meson_handle_cipher_request+0x3b0/0x780
[    4.892767]  crypto_pump_work+0x15c/0x2bc
[    4.896734]  kthread_worker_fn+0xcc/0x184
[    4.900702]  kthread+0x118/0x11c
[    4.903893]  ret_from_fork+0x10/0x20
[    4.907430] ---[ end trace 0000000000000000 ]---

Thanks,
Neil

> Regards