1584741 – [Q35] guest kernel panic when boot with 9 nics

Note: This is a public test instance of Red Hat Bugzilla. The data contained within is a snapshot of the live data so any changes you make will not be reflected in the production Bugzilla. Email is disabled so feel free to test any aspect of the site that you want. File any problems you find or give feedback at bugzilla.redhat.com.

Bug 1584741 - [Q35] guest kernel panic when boot with 9 nics

Summary: [Q35] guest kernel panic when boot with 9 nics

Keywords:
Status:	CLOSED ERRATA
Alias:	None
Product:	Fedora
Classification:	Fedora
Component:	seabios
Sub Component:
Version:	28
Hardware:	Unspecified
OS:	Unspecified
Priority:	unspecified
Severity:	medium
Target Milestone:	---
Assignee:	Fedora Virtualization Maintainers
QA Contact:	Fedora Extras Quality Assurance
Docs Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+	depends on / blocked

Reported:	2018-05-31 14:16 UTC by Paolo Bonzini
Modified:	2018-06-26 17:32 UTC (History)
CC List:	14 users (show)
Fixed In Version:	seabios-1.11.1-1.fc28
Doc Type:	If docs needed, set a value
Doc Text:
Clone Of:	1523166
Environment:
Last Closed:	2018-06-26 17:32:51 UTC
Type:	Bug
Embargoed:
Dependent Products:

Attachments	(Terms of Use)

Links
System	ID	Private	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHBA-2018:0814	0	None	None	None	2018-05-31 14:16:53 UTC

Description Paolo Bonzini 2018-05-31 14:16:53 UTC

+++ This bug was initially created as a clone of Bug #1523166 +++

Description of problem:
guest kernel panic when boot with 9 e1000 nics that with io-server=0 

Version-Release number of selected component (if applicable):
[root@localhost test]# uname -r
3.10.0-807.el7.x86_64
[root@localhost test]# rpm -qa |grep qemu-kvm-rhev
qemu-kvm-rhev-debuginfo-2.10.0-11.el7.x86_64
qemu-kvm-rhev-2.10.0-11.el7.x86_64
[root@localhost test]# rpm -qa |grep seabios
seabios-bin-1.11.0-1.el7.noarch
seabios-1.11.0-1.el7.x86_64

How reproducible:
3/3

Steps to Reproduce:
1. Boot up 9 e1000 nics with [1]
2. Check guest status


Actual results:
guest kernel panic

[    0.842671] BUG: unable to handle kernel paging request at fffffffd49d872f0
[    0.843405] IP: [<ffffffffb2ce168d>] cpuacct_charge+0x2d/0x50
[    0.843918] PGD 53e11067 PUD 0 
[    0.844281] Thread overran stack, or stack corrupted
[    0.844690] Oops: 0000 [#1] SMP 
[    0.845058] Modules linked in:
[    0.845369] CPU: 3 PID: 1 Comm: swapper/0 Not tainted 3.10.0-768.el7.x86_64 #1
[    0.845948] Hardware name: Red Hat KVM, BIOS 1.11.0-1.el7 04/01/2014
[    0.847178] task: ffff938f7c7b8000 ti: ffff938f7c7ac000 task.ti: ffff938f7c7ac000
[    0.847790] RIP: 0010:[<ffffffffb2ce168d>]  [<ffffffffb2ce168d>] cpuacct_charge+0x2d/0x50
[    0.848583] RSP: 0000:ffff938f7fd83e40  EFLAGS: 00010046
[    0.849063] RAX: 000000000000fba8 RBX: ffff938f7c7b8068 RCX: ffffffffb2c8b14a
[    0.849689] RDX: ffffffffb38555c0 RSI: 0000000000114ef4 RDI: ffff938f7c7b8000
[    0.850288] RBP: ffff938f7fd83e40 R08: 0000000000000400 R09: 0000000000000400
[    0.850859] R10: 0000000000000004 R11: 0000000000000005 R12: 0000000000114ef4
[    0.851433] R13: ffff938f7fd96e00 R14: ffff938f7c7b8000 R15: 0000000000000000
[    0.852494] FS:  0000000000000000(0000) GS:ffff938f7fd80000(0000) knlGS:0000000000000000
[    0.853238] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[    0.853706] CR2: fffffffd49d872f0 CR3: 0000000053e0e000 CR4: 00000000000006e0
[    0.854282] Call Trace:
[    0.854505]  <IRQ> 
[    0.854691]  [<ffffffffb2cd06b4>] update_curr+0x104/0x190
[    0.855734]  [<ffffffffb2cd1bbd>] task_tick_fair+0x2bd/0x660
[    0.856446]  [<ffffffffb2c347a9>] ? sched_clock+0x9/0x10
[    0.857139]  [<ffffffffb2cca535>] ? sched_clock_cpu+0x85/0xc0
[    0.857855]  [<ffffffffb2cc5c17>] scheduler_tick+0xc7/0x150
[    0.858600]  [<ffffffffb2c9d085>] update_process_times+0x65/0x80
[    0.859380]  [<ffffffffb2cf438b>] tick_periodic+0x2b/0x90
[    0.860119]  [<ffffffffb2cf4411>] tick_handle_periodic+0x21/0x80
[    0.860900]  [<ffffffffb2c55195>] local_apic_timer_interrupt+0x35/0x60
[    0.861741]  [<ffffffffb32dae7d>] smp_apic_timer_interrupt+0x3d/0x50
[    0.862566]  [<ffffffffb32d935d>] apic_timer_interrupt+0x6d/0x80
[    0.863335]  <EOI> 
[    0.863522]  [<ffffffffb32cee55>] ? _raw_spin_unlock_irqrestore+0x15/0x20
[    0.864753]  [<ffffffffb2f6db26>] pci_bus_write_config_word+0x66/0x80
[    0.865568]  [<ffffffffb2f725a5>] pci_scan_bridge+0x2b5/0x6a0
[    0.866330]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.867150]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.867912]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.868674]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.869488]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.870267]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.871021]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.871833]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.872614]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.873364]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.874193]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.874958]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.875707]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.876527]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.877302]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.878084]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.878891]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.879668]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.880418]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.881244]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.882645]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.883367]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.884142]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.884831]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.885572]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.886369]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.887147]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.887907]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.888714]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.889507]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.890262]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.891090]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.891854]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.892573]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.893334]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.894066]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.894784]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.895586]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.896360]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.897125]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.897945]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.898706]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.899450]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.900236]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.901012]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.901770]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.902598]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.903351]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.904115]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.904932]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.905695]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.906488]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.907306]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.908092]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.908843]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.909673]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.910426]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.911189]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.912539]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.913459]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.914187]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.914948]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.915719]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.916458]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.917295]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.918072]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.918853]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.919700]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.920482]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.921248]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.922030]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.922757]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.923527]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.924374]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.925152]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.925934]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.926737]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.927553]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.928333]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.929153]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.929938]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.930686]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.931526]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.932321]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.933039]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.933800]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.934531]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.935248]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.936014]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.936743]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.937461]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.938225]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.938956]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.939672]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.940434]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.941165]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.941881]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.943015]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.943705]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.944396]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.945163]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.945896]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.946619]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.947386]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.948121]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.948841]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.949609]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.950343]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.951066]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.951832]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.952568]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.953295]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.954060]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.954809]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.955529]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.956290]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.957023]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.957739]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.958501]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.959232]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.959950]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.960710]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.961440]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.962156]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.962917]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.963647]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.964365]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.965128]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.965856]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.966574]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.967336]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.968066]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.968781]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.969543]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.970272]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.970990]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.971749]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.973000]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.973679]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.974404]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.975142]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.975857]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.976618]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.977347]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.978064]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.978823]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.979554]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.980270]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.981032]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.981759]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.982475]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.983235]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.983964]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.984681]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.985443]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.986173]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.986887]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.987650]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.988379]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.989097]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.989857]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.990586]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.991302]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    0.992064]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    0.999173]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    0.999893]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    1.000654]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    1.001382]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    1.002605]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    1.003526]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    1.004260]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    1.004978]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    1.005736]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    1.006465]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    1.007182]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    1.007942]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    1.008669]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    1.009416]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    1.010231]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    1.010971]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    1.011690]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    1.012450]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    1.013179]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    1.013894]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    1.014657]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    1.015386]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    1.016103]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    1.016862]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    1.017591]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    1.018308]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    1.019070]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    1.019798]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    1.020514]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    1.021274]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    1.022005]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    1.022719]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    1.023480]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    1.024210]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    1.024925]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    1.025686]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    1.026416]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    1.027134]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    1.027894]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    1.028623]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    1.029344]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    1.030106]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    1.030833]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    1.031551]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    1.032834]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    1.033574]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    1.034254]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    1.034999]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    1.035772]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    1.036536]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    1.037340]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    1.038125]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    1.038876]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    1.039692]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    1.040451]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    1.041240]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    1.042056]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    1.042810]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    1.043586]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    1.044360]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    1.045104]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    1.045828]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    1.046628]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    1.047401]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    1.048162]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    1.048988]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    1.049738]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    1.050514]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    1.051331]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    1.052126]  [<ffffffffb2f72825>] pci_scan_bridge+0x535/0x6a0
[    1.052867]  [<ffffffffb2f71614>] ? pci_scan_single_device+0x74/0xf0
[    1.053695]  [<ffffffffb2f72a46>] pci_scan_child_bus+0xb6/0x190
[    1.054447]  [<ffffffffb31822a2>] pci_acpi_scan_root+0x322/0x680
[    1.055237]  [<ffffffffb2fbb6e9>] acpi_pci_root_add+0x39a/0x490
[    1.056014]  [<ffffffffb2fbd97a>] ? acpi_pnp_match+0x30/0xa6
[    1.056756]  [<ffffffffb2fb715b>] acpi_bus_attach+0xeb/0x1ef
[    1.057508]  [<ffffffffb2fb71d3>] acpi_bus_attach+0x163/0x1ef
[    1.058281]  [<ffffffffb2fb71d3>] acpi_bus_attach+0x163/0x1ef
[    1.059012]  [<ffffffffb39ab317>] ? acpi_sleep_proc_init+0x2a/0x2a
[    1.059760]  [<ffffffffb2fb72c9>] acpi_bus_scan+0x6a/0x90
[    1.060451]  [<ffffffffb39ab785>] acpi_scan_init+0x7f/0x1c2
[    1.061156]  [<ffffffffb39ab5ac>] acpi_init+0x295/0x2af
[    1.061834]  [<ffffffffb2c020e8>] do_one_initcall+0xb8/0x230
[    1.062996]  [<ffffffffb39631f5>] kernel_init_freeable+0x17a/0x219
[    1.063743]  [<ffffffffb39629d4>] ? initcall_blacklist+0xb0/0xb0
[    1.064483]  [<ffffffffb32b6a30>] ? rest_init+0x80/0x80
[    1.065163]  [<ffffffffb32b6a3e>] kernel_init+0xe/0xf0
[    1.065835]  [<ffffffffb32d8658>] ret_from_fork+0x58/0x90
[    1.066528]  [<ffffffffb32b6a30>] ? rest_init+0x80/0x80
[    1.067206] Code: 44 00 00 55 48 8b 47 08 48 89 e5 48 63 48 18 48 8b 87 40 09 00 00 48 8b 50 48 eb 0b 66 90 48 8b 50 68 48 85 d2 74 1b 48 8b 42 40 <48> 03 04 cd a0 e8 92 b3 48 01 30 48 8b 02 48 8b 40 40 48 85 c0 
[    1.072226] RIP  [<ffffffffb2ce168d>] cpuacct_charge+0x2d/0x50
[    1.072998]  RSP <ffff938f7fd83e40>
[    1.073548] CR2: fffffffd49d872f0
[    1.074087] ---[ end trace 57bdeb4fca46b444 ]---
[    1.074721] Kernel panic - not syncing: Fatal exception in interrupt


Expected results:
guest can boot up successfully

Additional info:
guest boot up successfully with 8 e1000 nics (with io-reserve=0)

[1]
#!/bin/sh
MACHINE=q35
SMP=4,cores=2,threads=2,sockets=1
MEM=2G
GUEST_IMG=/home/test/rhel75-seabios.qcow2
IMG_FORMAT=qcow2
size=32

CLI="/usr/libexec/qemu-kvm -enable-kvm -M $MACHINE -nodefaults -smp $SMP -m $MEM -name vm1 -drive file=$GUEST_IMG,if=none,id=guest-img,format=$IMG_FORMAT,werror=stop,rerror=stop -device ide-hd,drive=guest-img,bus=ide.0,unit=0,id=os-disk,bootindex=1 -spice port=5931,disable-ticketing -vga qxl -monitor stdio -qmp tcp:0:6666,server,nowait -boot menu=on,reboot-timeout=8,strict=on -chardev file,path=/home/seabios.log,id=seabios -device isa-debugcon,chardev=seabios,iobase=0x402 -serial unix:/tmp/console,server,nowait"
while [ ${i:=0} -lt ${1:-0} ]
do
        blkDiskID=$((i))
        CLI="$CLI -device pcie-root-port,bus=pcie.0,id=root.$i,slot=$i,io-reserve=0"
     n=$((50-$i))
     CLI="$CLI -device e1000,netdev=tap$i,mac=9a:6a:6b:6c:6d:$n,bus=root.$i -netdev tap,id=tap$i"
    i=$((i+1))
done

$CLI

Comment 1 Fedora Update System 2018-05-31 14:24:04 UTC

seabios-1.11.1-1.fc28 has been submitted as an update to Fedora 28. https://bodhi.fedoraproject.org/updates/FEDORA-2018-80b606cb29

Comment 2 Fedora Update System 2018-06-01 13:16:05 UTC

seabios-1.11.1-1.fc28 has been pushed to the Fedora 28 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2018-80b606cb29

Comment 3 Fedora Update System 2018-06-26 17:32:51 UTC

seabios-1.11.1-1.fc28 has been pushed to the Fedora 28 stable repository. If problems still persist, please make note of it in this bug report.

Note You need to log in before you can comment on or make changes to this bug.