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Bug 1278415

Summary: kernel panic not syncing attempted to kill init
Product: [Fedora] Fedora Reporter: Don Swaner <dswaner>
Component: kernelAssignee: Kernel Maintainer List <kernel-maint>
Status: CLOSED ERRATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 22CC: gansalmon, itamar, jonathan, kernel-maint, madhu.chinakonda, mchehab
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2015-11-12 11:21:57 EST Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---
Description Flags
dmesg output from good boot
failed boot backtrace none

Description Don Swaner 2015-11-05 07:27:54 EST
Description of problem:
New kernel (vmlinuz-4.2.5-201.fc22.x86_64) fails to boot - terminates with error message "Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000009

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1. Boot system

Actual results:
boot hangs with error message

Expected results:
successful boot

Additional info:
Comment 1 Don Swaner 2015-11-05 19:46:48 EST
removing this kernel and reinstalling had no effect - same error.
Comment 2 Josh Boyer 2015-11-06 09:08:16 EST
Please attach the output of dmesg from a successfully booting kernel, as well as a digitial picture of as much of the backtrace as you can see on the failed boot.
Comment 3 Don Swaner 2015-11-06 10:03 EST
Created attachment 1090694 [details]
dmesg output from good boot
Comment 4 Don Swaner 2015-11-06 10:06 EST
Created attachment 1090695 [details]
failed boot backtrace

This attachment was manually created, so it may contain typographical errors.
Comment 5 Don Swaner 2015-11-06 10:11:28 EST
I do not have a camera or cell phone to take a digital picture of the screen, which I believe is what was requested.
Comment 6 Josh Boyer 2015-11-06 10:18:40 EST
(In reply to Don Swaner from comment #4)
> Created attachment 1090695 [details]
> failed boot backtrace
> This attachment was manually created, so it may contain typographical errors.

Thanks, that was helpful.

Looking at the versions you have, it seems like a patch added in 4.2.4 is causing your issue.  Upstream is already aware of it, and the fix is queued for 4.2.6.  Specifically it is:

commit ababae44108b0e94b58eef6cb5bd830bd040a47f
Author: Werner Pawlitschko <werner.pawlitschko@arcor.de>
Date:   Tue Oct 27 09:08:04 2015 +0900

    x86/ioapic: Prevent NULL pointer dereference in setup_ioapic_dest()
    Commit 4857c91f0d19 changed the way how irq affinity is setup in
    setup_ioapic_dest() from using the core helper function to
    unconditionally calling the irq_set_affinity() callback of the
    underlying irq chip.
    That results in a NULL pointer dereference for the rare case where the
    underlying irq chip is lapic_chip which has no irq_set_affinity()
    callback. lapic_chip is occasionally used for the timer interrupt (irq
    The fix is simple: Check the availability of the callback instead of
    calling it unconditionally.
    Fixes: 4857c91f0d19 "x86/ioapic: Force affinity setting in setup_ioapic_dest()"
    Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
    Cc: stable@vger.kernel.org
Comment 7 Josh Boyer 2015-11-10 11:46:17 EST
4.2.6 is building right now.
Comment 8 Don Swaner 2015-11-12 11:17:23 EST
kernel 4.2.6-200.fc22.x86_64 fixes bug
Comment 9 Josh Boyer 2015-11-12 11:21:57 EST
Thank you for testing.