> -----Original Message-----
> From: David Marchand <david.march...@redhat.com>
> Sent: Tuesday, October 4, 2022 3:14 PM
> To: dev@dpdk.org
> Cc: sk...@mavell.com; Jerin Jacob Kollanukkaran <jer...@marvell.com>;
> sta...@dpdk.org; Sunil Kumar Kori <sk...@marvell.com>
> Subject: [EXT] [PATCH v2 6/9] trace: fix race in debug dump
>
> External Email
>
> ----------------------------------------------------------------------
> trace->nb_trace_mem_list access must be under trace->lock to avoid
> races with threads allocating/freeing their trace buffers.
>
> Fixes: f6b2d65dcd5d ("trace: implement debug dump")
> Cc: sta...@dpdk.org
>
> Signed-off-by: David Marchand <david.march...@redhat.com>
> ---
> lib/eal/common/eal_common_trace.c | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
Acked-by: Sunil Kumar Kori <sk...@marvell.com>
> diff --git a/lib/eal/common/eal_common_trace.c
> b/lib/eal/common/eal_common_trace.c
> index 6aa11a3b50..ec168e37b3 100644
> --- a/lib/eal/common/eal_common_trace.c
> +++ b/lib/eal/common/eal_common_trace.c
> @@ -259,10 +259,9 @@ trace_lcore_mem_dump(FILE *f)
> struct __rte_trace_header *header;
> uint32_t count;
>
> - if (trace->nb_trace_mem_list == 0)
> - return;
> -
> rte_spinlock_lock(&trace->lock);
> + if (trace->nb_trace_mem_list == 0)
> + goto out;
> fprintf(f, "nb_trace_mem_list = %d\n", trace->nb_trace_mem_list);
> fprintf(f, "\nTrace mem info\n--------------\n");
> for (count = 0; count < trace->nb_trace_mem_list; count++) { @@ -
> 273,6 +272,7 @@ trace_lcore_mem_dump(FILE *f)
> header->stream_header.lcore_id,
> header->stream_header.thread_name);
> }
> +out:
> rte_spinlock_unlock(&trace->lock);
> }
>
> --
> 2.37.3
