2021-10-27 21:31:22

by Logan Gunthorpe

[permalink] [raw]
Subject: Re: v5.15-rc7 AMD no kernel dump, spews "scsi_dma_map failed: request for 36 bytes!"




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


2021-10-27 21:34:23

by Marshall Midden

[permalink] [raw]
Subject: Re: 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 <[email protected]> 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