Matthew, thanks a lot. I can confirm the issue is gone. There is a bunch
of preexisting errors related to the BIOS as far as I can see, but these
were present in .22 too. Please go right ahead with the patch submission
and hopefully it'll make it into .26 kernel.
vadikmironov@MINIPC-PN50:~$ uname
Hi Vadik, Oliver, Iestyn,
The test kernel has just finished building, and is ready to test. It
would be great if you could install it and let me know if it fixes the
issue.
The kernel is 5.13.0-23-generic, with the following commit added:
commit 88a04049c08cd62e698bc1b1af2d09574b9e0aee
Author: B
FYI - still occurs in 5.13.0-25.
Linux version 5.13.0-25-generic (buildd@lgw01-amd64-047) (gcc (Ubuntu
11.2.0-7ubuntu2) 11.2.0, GNU ld (GNU Binutils for Ubuntu) 2.37)
#26-Ubuntu SMP Fri Jan 7 15:48:31 UTC 2022
BUG: kernel NULL pointer dereference, address: 000c
#PF: supervisor write a
Hi Matthew,
another big thank you from my side for the quick and perfect analysis!
Being given the necessary instructions I will be more than happy to test
the fixed kernel.
Oliver
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Matthew, thanks a lot for your detailed analysis. I stumbled across
Evgeny's patch yesterday as a most notable change related to null ptr
handling, but totally missed the second patch from Basavaraj too. How
peculiar. Anyway, please do let me know once you have a kernel build and
I will give it a r
Hi Vadik, Oliver,
Thanks for reporting, and sorry that 5.13.0-24-generic in -proposed
didn't solve the issue.
Let's do some analysis:
[1.381250] BUG: kernel NULL pointer dereference, address: 000c
[1.381270] RIP: 0010:amd_sfh_hid_client_init+0x47/0x350 [amd_sfh]
[1.381299
** Also affects: linux (Ubuntu Impish)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu)
Status: Confirmed => Fix Released
** Changed in: linux (Ubuntu Impish)
Status: New => In Progress
** Changed in: linux (Ubuntu Impish)
Importance: Undecided => Medium
Having played with it a bit more, it certainly does not look like a
solution to 1956401 is applicable here. Unless there are any concerns, I
am removing the duplicate flag and would be appreciative if anyone from
the kernel team would take a look.
Perhaps this is something brought into 5.13 with t
*** This bug is a duplicate of bug 1956401 ***
https://bugs.launchpad.net/bugs/1956401
Full dmesg output from 5.13.0-24 run attached
** Attachment added: "kernel_panic_linux-image-5.13.0-24-generic"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1956519/+attachment/5552643/+files/ke
*** This bug is a duplicate of bug 1956401 ***
https://bugs.launchpad.net/bugs/1956401
Kelsey, following the suggestion from bug 1956401, I've upgraded to
5.13.0-24-generic and it's exactly the same story as with 5.13.0-23:
1.330735] BUG: kernel NULL pointer dereference, address:
*** This bug is a duplicate of bug 1956401 ***
https://bugs.launchpad.net/bugs/1956401
Thanks a lot Kelsey.
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https://bugs.launchpad.net/bugs/1956519
Title:
kernel pani
*** This bug is a duplicate of bug 1956401 ***
https://bugs.launchpad.net/bugs/1956401
Thank you for the report and information! We're working to get a fix
out. Please refer to bug 1956401 for updates
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*** This bug is a duplicate of bug 1956401 ***
https://bugs.launchpad.net/bugs/1956401
** This bug has been marked a duplicate of bug 1956401
amdgpu hangs for 90 seconds at a time
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I am attaching the full dmesg output for both bad kernel version and
good version booting successfully. Please let me know if there is
anything else I can provide.
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https://bu
** Attachment added: "dmesg_normal_boot"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1956519/+attachment/5551780/+files/dmesg_normal_boot_5.13.0-22-generic
** Description changed:
- After upgrading my son's Asus PN50 with Ubuntu 21.10 to latest kernel
- 5.13.0-23, I no longer able to
** Attachment added: "dmesg_kernel_panic"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1956519/+attachment/5551779/+files/dmesg_kernel_panic_5.13.0-23-generic
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