linux-kernel - Re: v5.15-rc7 AMD no kernel dump, spews "scsi_dma

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Date:   Wed, 27 Oct 2021 11:45:41 -0600
From:   Logan Gunthorpe <logang@...tatee.com>
To:     Marshall Midden <marshallmidden@...il.com>
Cc:     joro@...tes.org, will@...nel.org, linux-kernel@...r.kernel.org
Subject: Re: v5.15-rc7 AMD no kernel dump, spews "scsi_dma_map failed: request
 for 36 bytes!"




On 2021-10-27 11:44 a.m., Marshall Midden wrote:
> Try number 2 with plain text definitely selected.
> 
> Forgot to cut and paste -- interruption occurred. The
> "vmcore-dmesg-incomplete.txt" (this file is created before the vmcore
> is taken, and then later in the process, the vmcore-dmesg.txt file is
> created).
> 
> AMD machine after taking dump and rebooting:
>     /media/parsecdata/crash/127.0.0.1-2021-10-27-12:06:53:
>     -rw------- 1 root root 5410206160 Oct 27 12:06 vmcore
>     -rw-r--r-- 1 root root          0 Oct 27 12:06 vmcore-dmesg-incomplete.txt
> 
> Intel machine:
>     /media/parsecdata/crash/127.0.0.1-2021-10-27-12:12:33:
>     -rw------- 1 root root 5482529464 Oct 27 12:12 vmcore
>     -rw-r--r-- 1 root root     236525 Oct 27 12:12 vmcore-dmesg.txt
> 

Ah, so some kind of issue with the testing infrastructure you are using?
Not something we need to be concerned about.

Logan