Bug 1797413

Summary: Kernel builded with GCC10 not working
Product: [Fedora] Fedora Reporter: Mikhail <mikhail.v.gavrilov>
Component: kernelAssignee: Kernel Maintainer List <kernel-maint>
Status: CLOSED DUPLICATE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: rawhideCC: airlied, bskeggs, hdegoede, ichavero, itamar, jarodwilson, jeremy, jglisse, john.j5live, jonathan, josef, kernel-maint, linville, masami256, mchehab, mjg59, steved, yaneti
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Last Closed: 2020-02-03 09:41:33 UTC Type: Bug
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Description Mikhail 2020-02-03 04:20:37 UTC 
Description of problem:
Kernel builded with GCC10 not working.
I builded locally kernel with GCC10 which working flawlessly when I buillded it with GCC 9.2. (5.5 RC7)
Kernel builded with GCC10 hangs immediately after start without writing logs in the journal and without output any messages on the screen.
After the kernel start, I see the only black screen and not responsive keyboard (even SysRq-B not works)
Comment 1 Mikhail 2020-02-03 04:47:16 UTC 
$ rpm -q gcc
gcc-10.0.1-0.7.fc32.x86_64

Build from this commit: https://src.fedoraproject.org/rpms/kernel/c/75f4244234c4836d4774419b886b685650e14ac2?branch=master
For successfully build with GCC10 add this patch: https://src.fedoraproject.org/rpms/kernel/blob/master/f/0001-x86-Don-t-declare-__force_order-in-kaslr_64.c.patch
Comment 2 Yanko Kaneti 2020-02-03 09:41:33 UTC 
Given the details, I'll assume this is the stack corruption in bug 1796780

*** This bug has been marked as a duplicate of bug 1796780 ***