[dpdk-stable] [dpdk-dev] [PATCH v2] common/octeontx2: fix seg fault on running procinfo

[Jerin Jacob]

On Mon, Jun 29, 2020 at 6:56 PM Harman Kalra <hkalra at marvell.com> wrote:
>
> Segmentation fault has been observed while running procinfo
> with reset options i.e. --stats-reset and --xstats-reset.
> Reason is procinfo runs as a secondary process and tries to
> hold a lock which is part of struct mdev, which was not
> allocated as part of shared memory.
>
> Fixes: 5ca59711f771 ("common/octeontx2: add mailbox base support infra")
> Cc: stable at dpdk.org
>
> Signed-off-by: Harman Kalra <hkalra at marvell.com>

Acked-by: Jerin Jacob <jerinj at marvell.com>

Delegated this patch to Thomas as it belongs to common/



> ---
> *V2: Minor corrections in commit message.
>
>  drivers/common/octeontx2/otx2_mbox.c | 7 +++++--
>  1 file changed, 5 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/common/octeontx2/otx2_mbox.c b/drivers/common/octeontx2/otx2_mbox.c
> index 2b7810929..6df1e8ea6 100644
> --- a/drivers/common/octeontx2/otx2_mbox.c
> +++ b/drivers/common/octeontx2/otx2_mbox.c
> @@ -9,6 +9,7 @@
>
>  #include <rte_atomic.h>
>  #include <rte_cycles.h>
> +#include <rte_malloc.h>
>
>  #include "otx2_mbox.h"
>  #include "otx2_dev.h"
> @@ -36,7 +37,7 @@ otx2_mbox_fini(struct otx2_mbox *mbox)
>  {
>         mbox->reg_base = 0;
>         mbox->hwbase = 0;
> -       free(mbox->dev);
> +       rte_free(mbox->dev);
>         mbox->dev = NULL;
>  }
>
> @@ -128,7 +129,9 @@ otx2_mbox_init(struct otx2_mbox *mbox, uintptr_t hwbase, uintptr_t reg_base,
>                 return -ENODEV;
>         }
>
> -       mbox->dev = malloc(ndevs * sizeof(struct otx2_mbox_dev));
> +       mbox->dev = rte_zmalloc("mbox dev",
> +                               ndevs * sizeof(struct otx2_mbox_dev),
> +                               OTX2_ALIGN);
>         if (!mbox->dev) {
>                 otx2_mbox_fini(mbox);
>                 return -ENOMEM;
> --
> 2.18.0
>