Comment # 16 on bug 1188745 from 
some more details kernel 5.13.8-1 (current TW kernel)

1. kexec from 470.63.01 into system with 470.42.01
   - failed kexec

2. power cycle and boot directly into system with 470.42.01
   - working kexec with 470.42.01,

3. kexec from 470.42.01 into system with 470.57.02
   - breaks already when 470.57.02 tries to boot

From the log it looks like thie step was working still with 5.13.2

```
root@fortress ~ # for boot in 28 27 26 25 24 23 22 21  ; do echo "boot ID:
-${boot}" ;  journalctl -b -${boot} --no-tail | rg -i "(NVRM: loading NVIDIA
UNIX x86_64 Kernel Module|kernel: Linux version|INVALID_DEVICE_REQUEST)" ; done
boot ID: -28
Jul 18 02:27:17 fortress kernel: Linux version 5.13.1-1-default
(geeko@buildhost) (gcc (SUSE Linux) 11.1.1 20210625 [revision
62bbb113ae68a7e724255e17143520735bcb9ec9], GNU ld (GNU Binutils; openSUSE
Tumbleweed) 2.36.1.20210326-4) #1 SMP Mon Jul 12 06:35:58 UTC 2021 (72aabc2)
Jul 18 02:27:26 fortress kernel: NVRM: loading NVIDIA UNIX x86_64 Kernel Module
 470.42.01  Tue Jun 15 21:26:37 UTC 2021
boot ID: -27
Jul 19 11:55:44 fortress kernel: Linux version 5.13.2-1-default
(geeko@buildhost) (gcc (SUSE Linux) 11.1.1 20210625 [revision
62bbb113ae68a7e724255e17143520735bcb9ec9], GNU ld (GNU Binutils; openSUSE
Tumbleweed) 2.36.1.20210326-4) #1 SMP Thu Jul 15 03:36:02 UTC 2021 (89416ca)
Jul 19 11:56:25 fortress kernel: NVRM: loading NVIDIA UNIX x86_64 Kernel Module
 470.42.01  Tue Jun 15 21:26:37 UTC 2021
boot ID: -26
Jul 19 20:17:24 fortress kernel: Linux version 5.13.2-1-default
(geeko@buildhost) (gcc (SUSE Linux) 11.1.1 20210625 [revision
62bbb113ae68a7e724255e17143520735bcb9ec9], GNU ld (GNU Binutils; openSUSE
Tumbleweed) 2.36.1.20210326-4) #1 SMP Thu Jul 15 03:36:02 UTC 2021 (89416ca)
Jul 19 20:17:34 fortress kernel: NVRM: loading NVIDIA UNIX x86_64 Kernel Module
 470.57.02  Tue Jul 13 16:14:05 UTC 2021
boot ID: -25
Jul 23 18:16:01 fortress kernel: Linux version 5.13.2-1-default
(geeko@buildhost) (gcc (SUSE Linux) 11.1.1 20210625 [revision
62bbb113ae68a7e724255e17143520735bcb9ec9], GNU ld (GNU Binutils; openSUSE
Tumbleweed) 2.36.1.20210326-4) #1 SMP Thu Jul 15 03:36:02 UTC 2021 (89416ca)
Jul 23 18:16:17 fortress kernel: iommu ivhd0: AMD-Vi: Event logged
[INVALID_DEVICE_REQUEST device=0a:00.0 pasid=0x00000 address=0xfffffffdf8000000
flags=0x0a00]
Jul 23 18:16:18 fortress kernel: NVRM: loading NVIDIA UNIX x86_64 Kernel Module
 470.57.02  Tue Jul 13 16:14:05 UTC 2021
boot ID: -24
Jul 23 18:17:46 fortress kernel: Linux version 5.13.2-1-default
(geeko@buildhost) (gcc (SUSE Linux) 11.1.1 20210625 [revision
62bbb113ae68a7e724255e17143520735bcb9ec9], GNU ld (GNU Binutils; openSUSE
Tumbleweed) 2.36.1.20210326-4) #1 SMP Thu Jul 15 03:36:02 UTC 2021 (89416ca)
Jul 23 18:18:04 fortress kernel: NVRM: loading NVIDIA UNIX x86_64 Kernel Module
 470.57.02  Tue Jul 13 16:14:05 UTC 2021
boot ID: -23
Jul 23 18:32:45 fortress kernel: Linux version 5.13.2-1-default
(geeko@buildhost) (gcc (SUSE Linux) 11.1.1 20210625 [revision
62bbb113ae68a7e724255e17143520735bcb9ec9], GNU ld (GNU Binutils; openSUSE
Tumbleweed) 2.36.1.20210326-4) #1 SMP Thu Jul 15 03:36:02 UTC 2021 (89416ca)
Jul 23 18:32:57 fortress kernel: NVRM: loading NVIDIA UNIX x86_64 Kernel Module
 470.57.02  Tue Jul 13 16:14:05 UTC 2021
boot ID: -22
Jul 23 18:37:54 fortress kernel: Linux version 5.13.2-1-default
(geeko@buildhost) (gcc (SUSE Linux) 11.1.1 20210625 [revision
62bbb113ae68a7e724255e17143520735bcb9ec9], GNU ld (GNU Binutils; openSUSE
Tumbleweed) 2.36.1.20210326-4) #1 SMP Thu Jul 15 03:36:02 UTC 2021 (89416ca)
Jul 23 18:38:12 fortress kernel: NVRM: loading NVIDIA UNIX x86_64 Kernel Module
 470.57.02  Tue Jul 13 16:14:05 UTC 2021
boot ID: -21
Jul 25 03:05:38 fortress kernel: Linux version 5.13.2-1-default
(geeko@buildhost) (gcc (SUSE Linux) 11.1.1 20210625 [revision
62bbb113ae68a7e724255e17143520735bcb9ec9], GNU ld (GNU Binutils; openSUSE
Tumbleweed) 2.36.1.20210326-4) #1 SMP Thu Jul 15 03:36:02 UTC 2021 (89416ca)
Jul 25 03:05:52 fortress kernel: iommu ivhd0: AMD-Vi: Event logged
[INVALID_DEVICE_REQUEST device=0a:00.0 pasid=0x00000 address=0xfffffffdf8000000
flags=0x0a00]
Jul 25 03:05:52 fortress kernel: NVRM: loading NVIDIA UNIX x86_64 Kernel Module
 470.57.02  Tue Jul 13 16:14:05 UTC 2021
```

the boot ID -25 was the reason why i thought it was a kernel regression in the
first place.
But further testing seems to show we have at least a partial problem at the
nvidia driver.

Do we have anyone from nvidia whom we could CC on the bug to get some input
from them?

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