From: Stephen Hemminger <stephen@networkplumber.org>
To: Khadem Ullah <14pwcse1224@uetpeshawar.edu.pk>
Cc: dev@dpdk.org, rasland@nvidia.com, stable@dpdk.org
Subject: Re: [PATCH] net/mlx5: fix crash when secondary queries dev info after primary exits
Date: Wed, 23 Jul 2025 07:19:59 -0700 [thread overview]
Message-ID: <20250723071959.4deac326@hermes.local> (raw)
In-Reply-To: <20250721073851.963141-1-14pwcse1224@uetpeshawar.edu.pk>
On Mon, 21 Jul 2025 03:38:51 -0400
Khadem Ullah <14pwcse1224@uetpeshawar.edu.pk> wrote:
> When the primary process exits, the shared mlx5 state becomes
> unavailable to secondary processes. If a secondary process attempts
> to query device information (e.g., via testpmd), a NULL dereference
> may occur due to missing shared data.
>
> This patch adds a check for shared context availability and fails
> gracefully while preventing a crash.
>
> Fixes: e60fbd5b24fc ("mlx5: add device configure/start/stop")
> Cc: stable@dpdk.org
>
> Signed-off-by: Khadem Ullah <14pwcse1224@uetpeshawar.edu.pk>
> ---
How and when is the secondary process monitoring the primary process.
If the secondary does not monitor then it is broken.
next prev parent reply other threads:[~2025-07-23 14:20 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-07-21 7:38 [PATCH] net/mlx5: fix crash when secondary queries dev info after primary exits Khadem Ullah
2025-07-21 10:58 ` Dariusz Sosnowski
2025-07-21 11:38 ` [PATCH] net/mlx5: fix crash when using meter in transfer flow Khadem Ullah
2025-07-21 11:46 ` [PATCH] net/mlx5: fix crash when secondary queries dev info after primary exits Ivan Malov
2025-07-21 11:59 ` Thomas Monjalon
2025-07-21 14:01 ` Dariusz Sosnowski
2025-07-22 12:14 ` [PATCH] ethdev: add dev_private check for secondary process Khadem Ullah
2025-07-22 16:26 ` [PATCH] net/mlx5: fix crash when secondary queries dev info after primary exits Ivan Malov
2025-07-22 16:52 ` Khadem Ullah
2025-07-22 19:30 ` Khadem Ullah
2025-07-23 11:29 ` Khadem Ullah
2025-07-21 14:50 ` Stephen Hemminger
2025-07-23 14:19 ` Stephen Hemminger [this message]
2025-07-29 21:46 ` Stephen Hemminger
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