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SubjectRe: v5.15-rc7 AMD no kernel dump, spews "scsi_dma_map failed: request for 36 bytes!"
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


On Wed, Oct 27, 2021 at 12:24 PM Logan Gunthorpe <logang@deltatee.com> wrote:
>
>
>
>
> On 2021-10-27 11:21 a.m., Marshall Midden wrote:
> > Yes, the spewing of messages stopped. Kernel crash dump taking is now
> > occurring. Patch applied to v5.15-rc7.
> > Reworded: THANKS! Patch works!
> >
> > Dunno why the dmesg isn't right, but at least there is a core image!
> > [I updated makedumpfs for v5.15-rc4 -- applying a bunch of cifs/smb,
> > qlogic, etc. patches and was getting ready for new kernel release in a
> > few weeks -- couldn't debug a cifs crash. :) Down the rabbit hole...
> > ;) ]
> > Intel machine booted, etc. and it has a dmesg correct. *sigh* I don't
> > think "I" need to worry about that. Someone else can report it.
>
> What do you mean the dmesg isn't "right"? What are you seeing and what
> are you expecting? What is it that someone else will be reporting with
> Intel machine having a "correct" dmesg?
>
> Logan

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