[PATCH] bus/dpaa: fix outside array bounds error with GCC v13

[Hemant Agrawal]

Acked-by: Hemant Agrawal <hemant.agrawal at nxp.com>

On 21-Jul-23 10:58 AM, Gagandeep Singh wrote:
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>
> when RTE_ENABLE_ASSERT is enable, DPAA driver is doing
> wrong NULL check on frame queue which allows the code
> to have access to NULL address.
> GCC v13 is giving array bounds error if code is
> accessing any memory region less than 4KB.
> This patch fixes this issue by adding proper NULL checks
> on frame queue.
>
> Please refer: https://bugs.dpdk.org/show_bug.cgi?id=1233
>
> Bugzilla ID: 1233
> Fixes: c47ff048b99a ("bus/dpaa: add QMAN driver core routines")
> Cc: stable at dpdk.org
>
> Signed-off-by: Gagandeep Singh <g.singh at nxp.com>
> ---
>   drivers/bus/dpaa/base/qbman/qman.c | 5 +++--
>   1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/bus/dpaa/base/qbman/qman.c b/drivers/bus/dpaa/base/qbman/qman.c
> index 3949bf8712..83db0a534e 100644
> --- a/drivers/bus/dpaa/base/qbman/qman.c
> +++ b/drivers/bus/dpaa/base/qbman/qman.c
> @@ -1,7 +1,7 @@
>   /* SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0)
>    *
>    * Copyright 2008-2016 Freescale Semiconductor Inc.
> - * Copyright 2017,2019 NXP
> + * Copyright 2017,2019-2023 NXP
>    *
>    */
>
> @@ -897,7 +897,7 @@ static u32 __poll_portal_slow(struct qman_portal *p, u32 is)
>                                  /* Lookup in the retirement table */
>                                  fq = table_find_fq(p,
>                                                     be32_to_cpu(msg->fq.fqid));
> -                               DPAA_BUG_ON(!fq);
> +                               DPAA_BUG_ON(fq != NULL);
>                                  fq_state_change(p, fq, &swapped_msg, verb);
>                                  if (fq->cb.fqs)
>                                          fq->cb.fqs(p, fq, &swapped_msg);
> @@ -909,6 +909,7 @@ static u32 __poll_portal_slow(struct qman_portal *p, u32 is)
>   #else
>                                  fq = (void *)(uintptr_t)msg->fq.contextB;
>   #endif
> +                               DPAA_BUG_ON(fq != NULL);
>                                  fq_state_change(p, fq, msg, verb);
>                                  if (fq->cb.fqs)
>                                          fq->cb.fqs(p, fq, &swapped_msg);
> --
> 2.25.1
>