Bug 759267

Summary:	Attaching a new USB device causes USB bus to crash hard (requiring reboot).
Product:	[Fedora] Fedora	Reporter:	Lars Kellogg-Stedman <lars>
Component:	kernel	Assignee:	Kernel Maintainer List <kernel-maint>
Status:	CLOSED ERRATA	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	16	CC:	gansalmon, itamar, jonathan, kernel-maint, madhu.chinakonda
Target Milestone:	---
Target Release:	---
Hardware:	x86_64
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2012-03-01 16:00:28 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:

Description Lars Kellogg-Stedman 2011-12-01 19:56:12 UTC

Description of problem:

Occasionally, when attaching a new USB device to my F16 system, I see the following trace in dmesg:

[175324.687177] ehci_hcd 0000:00:1d.0: fatal error
[175324.687186] DRHD: handling fault status reg 2
[175324.687196] DMAR:[DMA Read] Request device [00:1d.0] fault addr 0 
[175324.687203] DMAR:[fault reason 06] PTE Read access is not set
[175324.691091] ehci_hcd 0000:00:1d.0: HC died; cleaning up
[175324.693560] ehci_hcd 0000:00:1d.0: force halt; handshake ffffc90000c78024 00004000 00004000 -> -110
[175324.693566] ehci_hcd 0000:00:1d.0: HC died; cleaning up
[175324.698035] usb 2-1.7: device descriptor read/all, error -108
[175324.698045] hub 2-1:1.0: cannot disable port 7 (err = -19)
[175324.698067] hub 2-1:1.0: cannot reset port 7 (err = -19)
[175324.698074] hub 2-1:1.0: cannot disable port 7 (err = -19)
[175324.698084] hub 2-1:1.0: cannot reset port 7 (err = -19)
[175324.698089] hub 2-1:1.0: cannot disable port 7 (err = -19)
[175324.698098] hub 2-1:1.0: cannot reset port 7 (err = -19)
[175324.698103] hub 2-1:1.0: cannot disable port 7 (err = -19)
[175324.698108] hub 2-1:1.0: unable to enumerate USB device on port 7
[175324.698113] hub 2-1:1.0: cannot disable port 7 (err = -19)
[175324.698118] hub 2-1:1.0: hub_port_status failed (err = -19)
[175324.698129] usb 2-1: USB disconnect, device number 2
[175324.698134] usb 2-1.3: USB disconnect, device number 3
[175324.698138] usb 2-1.3.1: USB disconnect, device number 7
[175324.699098] scsi: killing requests for dead queue
[175324.699469] usb 2-1.3.2: USB disconnect, device number 8
[175324.700504] usb 2-1.4: USB disconnect, device number 4
[175324.753927] usb 2-1.5: USB disconnect, device number 5
[175324.783162] scsi: killing requests for dead queue
[175324.783305] usb 2-1.6: USB disconnect, device number 6
[175324.783307] usb 2-1.6.1: USB disconnect, device number 9
[175324.783309] usb 2-1.6.1.1: USB disconnect, device number 10
[175324.783507] scsi: killing requests for dead queue
[175324.783684] scsi: killing requests for dead queue
[175324.783840] usb 2-1.6.1.4: USB disconnect, device number 11

At this point, all USB attached devices become unusable.  The system is otherwise up and running -- I can log in remotely, or connect a PS/2 keyboard, but there does not appear to be a way to revice USB connectivity other than rebooting.

I am running kernel 3.1.1-1.fc16.x86_64.

Comment 1 Josh Boyer 2012-03-01 16:00:28 UTC

Odd.  Seems like an IOMMU issue on your machine.  We disabled the intel IOMMU by default in the 3.1.5 kernel so you shouldn't be seeing that any longer.

I'm going to close this bug out for now.  If you are seeing this with the 3.2.7 or newer kernel, please reopen this and attach the full dmesg from when the problem happens.