From: "Martin K. Petersen" <martin.petersen@oracle.com>
To: James Smart <jsmart2021@gmail.com>
Cc: linux-scsi@vger.kernel.org, Dick Kennedy <dick.kennedy@broadcom.com>
Subject: Re: [PATCH] lpfc: Fix crash when cpu count is 1 and null irq affinity mask
Date: Wed, 07 Aug 2019 21:57:15 -0400 [thread overview]
Message-ID: <yq1k1boctc4.fsf@oracle.com> (raw)
In-Reply-To: <20190802202612.25799-1-jsmart2021@gmail.com> (James Smart's message of "Fri, 2 Aug 2019 13:26:12 -0700")
James,
> When a configurations runs with a single cpu (such as a kdump kernel),
> which causes the driver to request a single vector, when the driver
> subsequently requests an irq affinity mask, the mask comes back null.
> The driver currently does nothing in this scenario, which leaves
> mappings to hardware queues incomplete and crashes the system.
>
> Fix by recognizing the null mask and assigning the vector to the first
> cpu in the system.
Applied to 5.3/scsi-fixes. Thanks!
--
Martin K. Petersen Oracle Linux Engineering
parent reply other threads:[~2019-08-08 1:57 UTC|newest]
Thread overview: expand[flat|nested] mbox.gz Atom feed
[parent not found: <20190802202612.25799-1-jsmart2021@gmail.com>]
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