From: Jacob Keller <jacob.e.keller@intel.com>
To: Mohith Kumar Thummaluru <mohith.k.kumar.thummaluru@oracle.com>,
"saeedm@nvidia.com" <saeedm@nvidia.com>,
"leon@kernel.org" <leon@kernel.org>,
"tariqt@nvidia.com" <tariqt@nvidia.com>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>
Cc: "andrew+netdev@lunn.ch" <andrew+netdev@lunn.ch>,
"davem@davemloft.net" <davem@davemloft.net>,
"edumazet@google.com" <edumazet@google.com>,
"kuba@kernel.org" <kuba@kernel.org>,
"pabeni@redhat.com" <pabeni@redhat.com>,
"shayd@nvidia.com" <shayd@nvidia.com>,
"elic@nvidia.com" <elic@nvidia.com>,
"linux-rdma@vger.kernel.org" <linux-rdma@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Anand Khoje <anand.a.khoje@oracle.com>,
Manjunath Patil <manjunath.b.patil@oracle.com>,
Rama Nichanamatlu <rama.nichanamatlu@oracle.com>,
Rajesh Sivaramasubramaniom
<rajesh.sivaramasubramaniom@oracle.com>,
Rohit Sajan Kumar <rohit.sajan.kumar@oracle.com>,
Qing Huang <qing.huang@oracle.com>
Subject: Re: [RESEND PATCH net-next 1/1] net/mlx5: Clean up only new IRQ glue on request_irq() failure
Date: Tue, 1 Jul 2025 13:51:53 -0700 [thread overview]
Message-ID: <06e99d8d-a6de-4687-b109-0d1557ac2779@intel.com> (raw)
In-Reply-To: <7cb171c4-3c36-42ea-bd6f-52dfe6bc5dab@oracle.com>
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On 6/25/2025 10:32 PM, Mohith Kumar Thummaluru wrote:
> The mlx5_irq_alloc() function can inadvertently free the entire rmap
> and end up in a crash[1] when the other threads tries to access this,
> when request_irq() fails due to exhausted IRQ vectors. This commit
> modifies the cleanup to remove only the specific IRQ mapping that was
> just added.
>
> This prevents removal of other valid mappings and ensures precise
> cleanup of the failed IRQ allocation's associated glue object.
>
> Note: This error is observed when both fwctl and rds configs are enabled.
>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
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next parent reply other threads:[~2025-07-01 20:53 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <7cb171c4-3c36-42ea-bd6f-52dfe6bc5dab@oracle.com>
2025-07-01 20:51 ` Jacob Keller [this message]
2025-07-02 5:07 ` [RESEND PATCH net-next 1/1] net/mlx5: Clean up only new IRQ glue on request_irq() failure Mohith Kumar Thummaluru
2025-07-02 17:56 ` Jacob Keller
2025-06-26 6:04 Mohith Kumar Thummaluru
2025-06-26 11:58 ` Mark Bloch
2025-06-27 6:43 ` Mohith Kumar Thummaluru
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