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pietinger
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PostPosted: Sat May 15, 2021 9:27 am    Post subject: Kernel 5.10.37 doesnt boot Reply with quote

Today I tried 5.10.37 coming from 5.10.36 (with "make oldconfig") on a Gigabyte Z270X-K5. It compiled with no errors or warnings.

Before I had an Update of the Intel Microcode also (I have intel-ucode/06-5e-03). So it is also possible this is the reason.

Anybody else with this problem ?


P.S.: It is a stub kernel which will be loaded from UEFI directly. No errors or screen output; only black screen and BIOS trying to load again.
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CaptainBlood
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PostPosted: Sat May 15, 2021 10:48 am    Post subject: Reply with quote

Fails to boot here, as non UEFI.
µcode updated here, not causing any issue with 5.12.4.

Didn't fallback to previous firmware yet.

Thks 4 ur attention, interest & support.
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CaptainBlood
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PostPosted: Sat May 15, 2021 11:00 am    Post subject: Reply with quote

firmware fallback didn't help.
Thks 4 spotting it out.
Code:
gcc-11 installed versions:  5.10.37(5.10.37)^bs(12:37:13 15/05/2021)(experimental -build -symlink)
Thks 4 ur attention, interest & support.
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Last edited by CaptainBlood on Sat May 15, 2021 11:21 am; edited 2 times in total
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pietinger
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PostPosted: Sat May 15, 2021 11:15 am    Post subject: Reply with quote

CaptainBlood wrote:
µcode updated here, not causing any issue with 5.12.4.

Thank you very much for your feedback. So, I dont need to test the new microcode with 5.10.36

I looked into https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/log/?h=linux-5.10.y
Such a huge amount of patches in one minor version I only saw a long time before ...
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PostPosted: Sat May 15, 2021 11:16 am    Post subject: Reply with quote

See https://forums.gentoo.org/viewtopic-t-1135239.html
That person has same problem as you if I understand correctly
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Goverp
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PostPosted: Sat May 15, 2021 5:08 pm    Post subject: Reply with quote

This will be of neither use nor comfort, but that's why I settled on installing grub as my boot manager, and having a suitable grub.conf to select new, current and old kernels.
The trouble with the EFI stub is that it tells BIOS (or rather EFI) that your linux kernel is a bootloader, but that's really a lie - it's just a kernel that implements the EFI bootloader ABI. It's great until it breaks :-( .
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Tony0945
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PostPosted: Sat May 15, 2021 6:13 pm    Post subject: Reply with quote

Easy to switch kernels with sys-boot/refind using keyboard
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CaptainBlood
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PostPosted: Sat May 15, 2021 7:16 pm    Post subject: Reply with quote

It would be nice if buddies with easy kernel switch capabilities could effectivly test 5.10.37 bootability.
Thks 4 ur attention, interest & support.
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Tony0945
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PostPosted: Sat May 15, 2021 7:23 pm    Post subject: Reply with quote

CaptainBlood wrote:
It would be nice if buddies with easy kernel switch capabilities could effectivly test 5.10.37 bootability.

I would but I don't want to unmask gcc and glibc and I'm running all AMD systems anyway so I can't test 5the microcode.
I think the microcode is the problem. Sometimes you get a bad BIOS. Sometimes you get bad microcode.
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CaptainBlood
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PostPosted: Sat May 15, 2021 8:03 pm    Post subject: Reply with quote

Tony0945 wrote:
I think the microcode is the problem.
Both former and updated intel µcode failed to boot 5.10.37.

5.10.36 boots fine here.

gcc-11 isn't required. OP doesn't say anything about it.

Thks 4 ur attention, interest & support.
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Tony0945
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PostPosted: Sat May 15, 2021 8:34 pm    Post subject: Reply with quote

Updating portage to get 5.10.37
First I have 218 updates to build. i notice that they are amending ebuilds without revbump. Example: guchar unconditionally requires vala even if -vala flag is set. if a flag dopes nothing, why have it? and why not revbump the ebuild?

When I'm all through, I can report if 5.10.37 boots on ryzen. I still don't think that it proves anything for intel, but it's a data point.

Still encourage OP to install refind instead of stub kernel. For one thing when you build a new kernel it becomes default without any extra commands.
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pietinger
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PostPosted: Sat May 15, 2021 10:01 pm    Post subject: Reply with quote

Goverp wrote:
This will be of neither use nor comfort, but that's why I settled on installing grub as my boot manager, and having a suitable grub.conf to select new, current and old kernels.

Maybe I wasnt exact when writing my first post. I have no problem with going back to 5.10.36 because I have two other entries in my UEFI: One is my old grub2, the other is a stub kernel with a command line doing no IMA (ima_appraise=fix). So I have no problems when a new kernel has problems - I can go back immediately.

My real intention was only to see if it is a very special problem only I have (because I have e.g.: SecureBoot and IMA), or if there are more users concerned - and if yes it should/could be a little warning. So please let me apologize if I was not concrete.
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Tony0945
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PostPosted: Sun May 16, 2021 2:26 am    Post subject: Reply with quote

Updated 217 packages (ugh another python change), keyworded gentoo-sources-5.10.27 and built it. Interestingly, the only config change was breaking GCC-NATIVE into two listings, one for Intel and one for AMD (why? gcc can determine amd or intel!).
Will test tomorrow

EDIT"
Wait a minute! You are taling about 5.10.37 but only up to 5.10.32 is in the tree! As of this afternoon.

EDIT2:
Forget it. i was looking at the wrong machine. on the right machine:
Code:
MSI ~ # ls -ltr /boot/vml*
-rw-r--r-- 1 root root 5517968 Mar 25  2020 /boot/vmlinuz-4.17.19-gentoo.old
-rw-r--r-- 1 root root 8364784 Aug 24  2020 /boot/vmlinuz-4.17.19-gentoo
-rw-r--r-- 1 root root 5579328 Aug 26  2020 /boot/vmlinuz-4.14.194-gentoo
-rw-r--r-- 1 root root 5669536 Aug 26  2020 /boot/vmlinuz-4.19.141-gentoo
-rw-r--r-- 1 root root 8610976 Oct 27  2020 /boot/vmlinuz-5.4.72-gentoo.old
-rw-r--r-- 1 root root 8610976 Jan  8 14:04 /boot/vmlinuz-5.4.72-gentoo
-rw-r--r-- 1 root root 8619168 Feb  7 10:39 /boot/vmlinuz-5.4.92-gentoo
-rw-r--r-- 1 root root 8623200 Mar 25 21:35 /boot/vmlinuz-5.4.97-gentoo.old
-rw-r--r-- 1 root root 8627296 Apr  3 11:43 /boot/vmlinuz-5.4.97-gentoo
-rw-r--r-- 1 root root 8727168 Apr 28 18:36 /boot/vmlinuz-5.10.27-gentoo.old
-rw-r--r-- 1 root root 8727104 Apr 30 09:04 /boot/vmlinuz-5.10.27-gentoo
-rw-r--r-- 1 root root 8727328 May 15 21:14 /boot/vmlinuz-5.10.37-gentoo
Not going to test until I have a night's sleep!
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Tony0945
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PostPosted: Sun May 16, 2021 3:27 pm    Post subject: Reply with quote

Code:
tony@MSI ~ $ uname -a
Linux MSI 5.10.37-gentoo #1 SMP Sat May 15 21:11:36 CDT 2021 x86_64 AMD Ryzen 7 2700X Eight-Core Processor AuthenticAMD GNU/Linux

No problem at all booting. I still think it's an Intel microcode issue.

Here's my config ... Oops. wgetpaste stopped working!
https://dpaste.com/3KFPJC5LK
Problem was latest "stable" wgetpaste. I re-emerged the previous version and it works. Masking latest stable.
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CaptainBlood
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PostPosted: Sun May 16, 2021 5:07 pm    Post subject: Reply with quote

Finally got it working as in:
Code:
uname -r
5.10.37-gentoo-try
make mrproper
make x86_64_defconfig
make
which I should have tried in the first place.

gcc-11 + latest intel µcode here.

Thks 4 ur attention, interest & support.
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PostPosted: Sun May 16, 2021 5:26 pm    Post subject: Reply with quote

CaptainBlood wrote:
gcc-11 + latest intel µcode here.

Thanks again. Yes, I forgot to mention gcc; I have gcc 10.2.0-r5 (actual stable).
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Tony0945
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PostPosted: Sun May 16, 2021 11:46 pm    Post subject: Reply with quote

Ah? I used gcc-9.3
Reading lots of problems with 11 on the forum.
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CaptainBlood
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PostPosted: Wed May 19, 2021 6:51 am    Post subject: Reply with quote

Code:
diff /usr/src/linux-5.10.36-gentoo-classic/.config  /usr/src/linux-5.10.37-gentoo-classic/.config
3c3
< # Linux/x86 5.10.36-gentoo-classic Kernel Configuration
---
> # Linux/x86 5.10.37-gentoo-classic Kernel Configuration
3389c3389
< CONFIG_INTEL_IOMMU_DEFAULT_ON=y
---
> # CONFIG_INTEL_IOMMU_DEFAULT_ON is not set
seems to be the culprit here.

Context:
Code:
[    0.313747] DMAR: [Firmware Bug]: No firmware reserved region can cover this RMRR [0x0000000088800000-0x000000008affffff], contact BIOS vendor for fixes
[    0.313750] DMAR: [Firmware Bug]: Your BIOS is broken; bad RMRR [0x0000000088800000-0x000000008affffff]
               BIOS vendor: American Megatrends Inc.; Ver: R01-A2
persistently reported here, whatever kernel major version.
Could be the source of the issue when activating INTEL_IOMMU.

Kernel command line activation untested here yet.

Will see if issue keeps raising for forthcoming version.

Thks 4 ur attention, interest & support.
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CaptainBlood
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PostPosted: Wed May 19, 2021 8:59 am    Post subject: Reply with quote

CaptainBlood wrote:

Will see if issue keeps raising for forthcoming version.
5.10.38 seems to revert some former commits...
Wait & see...
Thks 4 ur attention, interest & support.
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PostPosted: Wed May 19, 2021 9:15 am    Post subject: Reply with quote

Thanks for the heads up guys. I'll refrain from updating my intel laptop's kernel then.
On my old AMD desktop (FX-8350) 5.10 was unusable (wayland crashes).

I'm starting to dislike 5.10 -series...
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PostPosted: Wed May 19, 2021 9:23 am    Post subject: Reply with quote

CaptainBlood wrote:
5.10.38 seems to revert some former commits...
Wait & see...

I have just looked into the content of 5.10.38. Not quite as huge as 37 but also very many patches. I will it test as soon as possible.

@ Zucca: For me I had no problems with 5.10 (I had almost every minor version of it) :-)
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PostPosted: Wed May 19, 2021 9:40 am    Post subject: Reply with quote

pietinger wrote:
Zucca: For me I had no problems with 5.10 (I had almost every minor version of it) :-)
What's your CPU and GPU?
I have a hunch which tell me that the problems are because of certain hardware combinations. :(
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PostPosted: Wed May 19, 2021 9:46 am    Post subject: Reply with quote

Zucca wrote:
What's your CPU and GPU?

I have an Intel i7-6700 and using it also as gpu (no extra graphics card) on a Gigabyte Z270X-K5 with 16 GB RAM. At the moment I am on 5.10.36 as a monolithic signed stub kernel (doing SecureBoot). I am using IMA and AppArmor as security solutions.
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PostPosted: Wed May 19, 2021 10:00 am    Post subject: Reply with quote

Yup. I suspect its either my GPU, R9 Nano, or the CPU FX-8350.
Gotta suffer with that old CPU until chip makers' supply chain starts working again.

As for intel side of things - I'll wait and see how people manage with later updates to 5.10...
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PostPosted: Thu May 20, 2021 12:21 am    Post subject: Reply with quote

I have just booted Kernel 5.10.38 without any problem.

A diff of "dmesg -t" from 5.10.36 and this one showed me:

1. I have a new microcode; from old "e2" switched now to "ea" (2021-01-25). (This was the microcode update between 5.10.36 and ..37). So, I know the microcde was NOT the problem.
2. I have one new log-entry:
Quote:
IP idents hash table entries: 262144 (order: 9, 2097152 bytes, linear)


My suspicion is there was a problem with IOMMU in 5.10.37 ... because I saw two reverts in 5.10.38 ... but I dont know.
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