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Bug 791160

Summary: sys-kernel/gentoo-kernel-5.10.37 fails to (EFI) boot
Product: Gentoo Linux Reporter: Michael Moon <triffid.hunter>
Component: Current packagesAssignee: Distribution Kernel Project <dist-kernel>
Status: RESOLVED OBSOLETE    
Severity: normal CC: jstein, mgorny
Priority: Normal    
Version: unspecified   
Hardware: All   
OS: Linux   
Whiteboard:
Package list:
Runtime testing required: ---
Attachments: kernel saved config
emerge --info

Description Michael Moon 2021-05-20 04:37:33 UTC
Created attachment 709947 [details]
kernel saved config

After installing gentoo-kernel-5.10.37, my system failed to boot - BIOS screen would persist for a couple seconds longer than usual, then reboot with no messages of any kind appearing.

I rebuilt the kernel and reconfigured my EFI to no avail - furthermore there were no unusual warnings or errors during the kernel build process.

Downgrading to an existing gentoo-kernel-5.10.36 image fixes everything - should I try to rebuild 5.10.36 and see what happens?

I have attached my kernel config (identical to the 5.10.36 config except for version number in the header comment).

I am not using grub, rather EFISTUB with a baked-in kernel command line. I have been using this setup for maybe a year with zero problems until today.
Comment 1 Michael Moon 2021-05-20 04:39:15 UTC
Created attachment 709950 [details]
emerge --info
Comment 2 Michael Moon 2021-05-20 04:40:31 UTC
/usr/src $ diff -u linux-5.10.36-dorellan/.config linux-5.10.37-dorellan/.config
--- linux-5.10.36-dorellan/.config      2021-05-13 23:01:59.500559320 +0800
+++ linux-5.10.37-dorellan/.config      2021-05-19 22:04:47.948172731 +0800
@@ -1,6 +1,6 @@
#
# Automatically generated file; DO NOT EDIT.
-# Linux/x86 5.10.36 Kernel Configuration
+# Linux/x86 5.10.37 Kernel Configuration
#
CONFIG_CC_VERSION_TEXT="x86_64-pc-linux-gnu-gcc (Gentoo 10.2.0-r5 p6) 10.2.0"
CONFIG_CC_IS_GCC=y
/usr/src [1] $
Comment 3 Michael Moon 2021-06-04 05:28:22 UTC
I decided to try gentoo-kernel-5.10.41 and it seems to be working fine, with zero changes to anything relevant other than the package version number.

No idea what the issue was with 5.10.37, but it seems to have gone away with the version bump.

Since 5.10.37 is no longer in-tree, I guess we can mark this as resolved?

I can reopen if another gentoo-kernel build randomly gives me a broken image.
Comment 4 Michał Górny archtester Gentoo Infrastructure gentoo-dev Security 2021-06-04 06:42:57 UTC
Sure, thanks for the report.  I'm sorry that we couldn't help you.