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    SubjectRe: [PATCH v2] driver: crypto: caam: replace this_cpu_ptr with raw_cpu_ptr
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    On 11/1/2021 5:14 AM, Meng Li wrote:
    > When enable the kernel debug config, there is below calltrace detected:
    > BUG: using smp_processor_id() in preemptible [00000000] code: cryptomgr_test/339
    > caller is debug_smp_processor_id+0x20/0x30
    > CPU: 9 PID: 339 Comm: cryptomgr_test Not tainted 5.10.63-yocto-standard #1
    > Hardware name: NXP Layerscape LX2160ARDB (DT)
    > Call trace:
    > dump_backtrace+0x0/0x1a0
    > show_stack+0x24/0x30
    > dump_stack+0xf0/0x13c
    > check_preemption_disabled+0x100/0x110
    > debug_smp_processor_id+0x20/0x30
    > dpaa2_caam_enqueue+0x10c/0x25c
    > ......
    > cryptomgr_test+0x38/0x60
    > kthread+0x158/0x164
    > ret_from_fork+0x10/0x38
    > According to the comment in commit ac5d15b4519f("crypto: caam/qi2
    > - use affine DPIOs "), because preemption is no longer disabled
    > while trying to enqueue an FQID, it might be possible to run the
    > enqueue on a different CPU(due to migration, when in process context),
    > however this wouldn't be a functionality issue. But there will be
    > above calltrace when enable kernel debug config. So, replace this_cpu_ptr
    > with raw_cpu_ptr to avoid above call trace.
    >
    > Fixes: ac5d15b4519f ("crypto: caam/qi2 - use affine DPIOs")
    > Cc: stable@vger.kernel.org
    > Signed-off-by: Meng Li <Meng.Li@windriver.com>
    Reviewed-by: Horia Geantă <horia.geanta@nxp.com>

    Thanks,
    Horia

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